*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#08080c;--bg2:#0e0e14;--bg3:#131318;
  --border:rgba(255,255,255,0.07);--border2:rgba(255,255,255,0.13);
  --text:#e8e6e0;--muted:#6a6860;--hint:#3a3830;
  --accent:#00e5ff;--accent2:#7c3aed;--accent3:#f59e0b;
  --accent-rgb:0,229,255;--accent2-rgb:124,58,237;
  --dot-color:0,229,255;
  --canvas-bg:8,12,16;
  --font-mono:'Space Mono',monospace;
  --font-display:'Syne',sans-serif;
  --font-body:'Inter',sans-serif;
  --header:52px;
  --flip-duration:0.55s;
}
html,body{height:100%;background:var(--bg);color:var(--text);font-family:var(--font-body);overflow:hidden;-webkit-tap-highlight-color:transparent;}
body::before{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(var(--accent-rgb),0.06) 0%,transparent 70%);}

/* ── PREVENT TEXT SELECTION WHILE DRAGGING ─────────────────────────────────── */
#workspace, #bubble-layer, #tl-scroll {
  user-select: none;
  -webkit-user-select: none;
}

#bg-grid{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(rgba(var(--accent-rgb),0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(var(--accent-rgb),0.025) 1px,transparent 1px);
  background-size:48px 48px;}
#scan-line{position:fixed;left:0;right:0;height:1px;z-index:1;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(var(--accent-rgb),0.12),transparent);
  animation:scan 10s linear infinite;}
@keyframes scan{from{top:-1px}to{top:100vh}}
#dot-canvas{position:fixed;inset:0;z-index:1;pointer-events:none;}

/* ── HEADER ─────────────────────────────────────────────────────────────────── */
header{position:fixed;top:0;left:0;right:0;z-index:200;height:var(--header);
  border-bottom:1px solid var(--border);background:rgba(8,8,12,0.95);backdrop-filter:blur(12px);}
.header-inner{height:100%;max-width:100%;padding:0 20px;display:flex;align-items:center;gap:8px;}
.logo{display:flex;align-items:baseline;gap:7px;flex-shrink:0;}
.logo-tag{font-family:var(--font-mono);font-size:9px;background:var(--accent);color:#000;padding:2px 5px;border-radius:2px;font-weight:700;letter-spacing:1px;}
.logo-main{font-family:var(--font-display);font-size:14px;font-weight:800;letter-spacing:2.5px;}
.logo-sub{font-family:var(--font-mono);font-size:9px;color:var(--muted);letter-spacing:2px;}
nav{display:none;gap:3px;}
.nav-btn{font-family:var(--font-mono);font-size:9px;letter-spacing:1.5px;background:none;border:1px solid transparent;
  color:var(--muted);padding:10px 16px;border-radius:3px;cursor:pointer;transition:all .15s;text-align:left;}
.nav-btn:hover{color:var(--text);border-color:var(--border2);}
.nav-btn.active{color:var(--accent);border-color:var(--accent);background:rgba(var(--accent-rgb),0.06);}
.exam-counter{display:flex;align-items:center;gap:5px;font-family:var(--font-mono);font-size:9px;
  border:1px solid rgba(245,158,11,0.3);padding:5px 10px;border-radius:2px;background:rgba(245,158,11,0.05);flex-shrink:0;margin-left:auto;}
.counter-label{color:var(--muted);letter-spacing:1px;}
.counter-num{color:var(--accent3);font-size:16px;font-weight:700;line-height:1;}

/* ── AUTH BUTTON ─────────────────────────────────────────────────────────────── */
#auth-btn-wrap{position:relative;flex-shrink:0;margin-left:8px;}
.auth-nav-btn{border-color:rgba(var(--accent-rgb),0.25)!important;color:rgba(var(--accent-rgb),0.6)!important;}
.auth-nav-btn.signed-in{color:var(--accent)!important;border-color:var(--accent)!important;background:rgba(var(--accent-rgb),0.08)!important;}

#header-upgrade-btn{font-family:var(--font-mono);font-size:9px;letter-spacing:1.5px;color:#f59e0b;
  border:1px solid rgba(245,158,11,.5);background:rgba(245,158,11,.1);padding:6px 12px;
  border-radius:6px;cursor:pointer;transition:background .15s;flex-shrink:0;}
#header-upgrade-btn:hover{background:rgba(245,158,11,.2);border-color:rgba(245,158,11,.8);}
@media(max-width:600px){#header-upgrade-btn{display:none!important;}}

/* ── FLAME ICON ───────────────────────────────────────────────────────────────── */
@keyframes flame-flicker {
  0%,100%{ transform:scaleX(1) rotate(0deg); }
  20%    { transform:scaleX(1.08) rotate(-2.5deg); }
  40%    { transform:scaleX(0.92) rotate(1.5deg); }
  65%    { transform:scaleX(1.05) rotate(-1deg); }
  80%    { transform:scaleX(0.97) rotate(.8deg); }
}
@keyframes flame-intense {
  0%,100%{ transform:scaleX(1) scaleY(1) rotate(0deg); filter:brightness(1); }
  15%    { transform:scaleX(1.13) scaleY(1.05) rotate(-3deg); filter:brightness(1.2); }
  35%    { transform:scaleX(0.89) scaleY(1.1) rotate(2deg); filter:brightness(0.9); }
  60%    { transform:scaleX(1.09) scaleY(0.95) rotate(-1.5deg); filter:brightness(1.15); }
  80%    { transform:scaleX(0.95) scaleY(1.08) rotate(1deg); filter:brightness(1.05); }
}
@keyframes flame-inferno {
  0%,100%{ transform:scaleX(1) scaleY(1) rotate(0deg); }
  10%    { transform:scaleX(1.2) scaleY(1.09) rotate(-4deg); filter:brightness(1.4) saturate(1.3); }
  25%    { transform:scaleX(0.87) scaleY(1.16) rotate(3deg); filter:brightness(0.85); }
  50%    { transform:scaleX(1.15) scaleY(0.92) rotate(-2deg); filter:brightness(1.35) saturate(1.2); }
  75%    { transform:scaleX(0.91) scaleY(1.11) rotate(2.5deg); filter:brightness(1.1); }
}
.flame-svg{ display:block; transform-origin:bottom center; }
.flame-t0 { filter:grayscale(1)!important; animation:none!important; }
.flame-t1 { animation:flame-flicker 2.2s ease-in-out infinite; }
.flame-t2 { animation:flame-flicker 1.8s ease-in-out infinite; }
.flame-t3 { animation:flame-flicker 1.4s ease-in-out infinite; filter:drop-shadow(0 0 4px rgba(249,115,22,.5)); }
.flame-t4 { animation:flame-intense 1.1s ease-in-out infinite; filter:drop-shadow(0 0 8px rgba(249,115,22,.7)); }
.flame-t5 { animation:flame-inferno .85s ease-in-out infinite; filter:drop-shadow(0 0 14px rgba(249,115,22,1)) drop-shadow(0 0 28px rgba(239,68,68,.6)); }

/* ── STREAK BADGES ────────────────────────────────────────────────────────────── */
@keyframes streak-bump {
  0%  { transform:scale(1); }
  35% { transform:scale(1.22); }
  65% { transform:scale(0.92); }
  100%{ transform:scale(1); }
}
@keyframes streak-risk-pulse {
  0%,100%{ box-shadow:0 0 0 0 rgba(239,68,68,0); }
  50%    { box-shadow:0 0 0 5px rgba(239,68,68,.28); }
}
.streak-bumping{ animation:streak-bump .6s cubic-bezier(.34,1.56,.64,1) forwards !important; }

#streak-badge{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;
  color:#f97316;border:1px solid rgba(249,115,22,.4);background:rgba(249,115,22,.08);
  padding:5px 10px;border-radius:6px;cursor:pointer;flex-shrink:0;
  align-items:center;gap:5px;white-space:nowrap;transition:background .15s,border-color .15s,color .3s;
}
#streak-badge:hover{ background:rgba(249,115,22,.14);border-color:rgba(249,115,22,.7); }
#streak-badge.streak-inactive{ color:var(--muted)!important;border-color:rgba(255,255,255,.1)!important;background:rgba(255,255,255,.03)!important; }
#streak-badge.streak-inactive .flame-svg{ filter:grayscale(1)!important;animation:none!important; }
#streak-badge.streak-at-risk{ animation:streak-risk-pulse 1.2s ease-in-out infinite;border-color:rgba(239,68,68,.6)!important;color:#ef4444!important; }
@media(max-width:600px){ #streak-badge{ display:none!important; } }

.cs-streak-btn{ color:#f97316!important;border-color:rgba(249,115,22,.35)!important;background:rgba(249,115,22,.07)!important;gap:5px;transition:background .15s,border-color .15s,color .3s!important; }
.cs-streak-btn:hover{ background:rgba(249,115,22,.14)!important;border-color:rgba(249,115,22,.7)!important; }
.cs-streak-btn.streak-inactive{ color:var(--muted)!important;border-color:rgba(255,255,255,.1)!important;background:rgba(255,255,255,.03)!important; }
.cs-streak-btn.streak-inactive .flame-svg{ filter:grayscale(1)!important;animation:none!important; }
.cs-streak-btn.streak-at-risk{ animation:streak-risk-pulse 1.2s ease-in-out infinite;border-color:rgba(239,68,68,.6)!important; }

/* ── STREAK POPUP ─────────────────────────────────────────────────────────────── */
#streak-popup{
  position:fixed;z-index:2000;
  background:var(--bg2,#111);border:1px solid rgba(249,115,22,.28);
  border-radius:16px;padding:20px;width:min(290px,calc(100vw - 20px));
  max-height:80vh;overflow-y:auto;scrollbar-width:none;
  box-shadow:0 16px 48px rgba(0,0,0,.65),0 0 0 1px rgba(249,115,22,.07);
  opacity:0;pointer-events:none;transform:translateY(-8px);
  transition:opacity .2s ease,transform .2s ease;
}
#streak-popup::-webkit-scrollbar{ display:none; }
#streak-popup.open{ opacity:1;pointer-events:auto;transform:translateY(0); }
#streak-popup.streak-inactive{ border-color:rgba(255,255,255,.1);box-shadow:0 12px 40px rgba(0,0,0,.5); }
#streak-popup.streak-inactive .flame-t1,
#streak-popup.streak-inactive .flame-t2,
#streak-popup.streak-inactive .flame-t3,
#streak-popup.streak-inactive .flame-t4,
#streak-popup.streak-inactive .flame-t5{ filter:grayscale(1)!important;animation:none!important; }
#streak-popup.streak-inactive .skp-count{ color:var(--muted,#666); }
#streak-popup.streak-inactive .skp-lbl  { color:var(--muted,#555); }

/* Popup top row */
.skp-top{ display:flex;align-items:center;gap:14px;margin-bottom:14px; }
.skp-flame-wrap{ flex-shrink:0; }
.skp-top-txt{ flex:1;min-width:0; }
.skp-count{ font-family:'Syne',sans-serif;font-size:44px;font-weight:800;color:#f97316;line-height:1; }
.skp-count-hot    { color:#f59e0b; }
.skp-count-fire   { color:#ef4444; }
.skp-count-inferno{ background:linear-gradient(135deg,#f97316,#ef4444);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text; }
.skp-lbl  { font-family:'Space Mono',monospace;font-size:7.5px;letter-spacing:2px;color:rgba(249,115,22,.6);margin-top:2px; }
.skp-timer{ font-family:'Space Mono',monospace;font-size:9px;color:var(--muted,#666);margin-top:5px; }
.skp-timer.at-risk{ color:#f59e0b; }
.skp-timer.urgent { color:#ef4444;font-weight:700; }
.skp-timer.skp-timer-broken{ color:var(--muted,#555);font-style:italic; }

/* Stats row */
.skp-stats{ display:flex;margin-bottom:14px;padding:11px 0;border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06); }
.skp-stat{ flex:1;text-align:center; }
.skp-stat+.skp-stat{ border-left:1px solid rgba(255,255,255,.06); }
.skp-stat-n{ font-family:'Syne',sans-serif;font-size:17px;font-weight:700;color:#f97316; }
.skp-stat-ice .skp-stat-n{ color:#60a5fa; }
.skp-stat-l{ font-family:'Space Mono',monospace;font-size:6px;letter-spacing:1.5px;color:var(--muted,#555);margin-top:2px; }

/* Monthly calendar */
.skp-cal-wrap{ margin-bottom:14px; }
.skp-cal-head{ text-align:center;margin-bottom:7px; }
.skp-cal-head span{ font-family:'Space Mono',monospace;font-size:8px;letter-spacing:2px;color:rgba(255,255,255,.25); }
.skp-cal-grid{ display:grid;grid-template-columns:repeat(7,1fr);gap:3px; }
.skp-cal-lbl{ text-align:center;font-family:'Space Mono',monospace;font-size:6.5px;color:rgba(255,255,255,.18);padding:2px 0 4px; }
.skp-cal-cell{ aspect-ratio:1;border-radius:5px;display:flex;align-items:center;justify-content:center; }
.skp-cal-num{ font-family:'Space Mono',monospace;font-size:7px;color:rgba(255,255,255,.28); }
.skp-cal-num-past{ color:rgba(255,255,255,.14); }
.skp-cal-cell.future .skp-cal-num{ color:rgba(255,255,255,.1); }
.skp-cal-cell.active { background:rgba(249,115,22,.22); }
.skp-cal-cell.frozen { background:rgba(96,165,250,.16); }
.skp-cal-cell.revived{ background:rgba(244,114,182,.16); }
@keyframes today-pulse{ 0%,100%{outline-color:rgba(249,115,22,.75)}50%{outline-color:rgba(249,115,22,.22)} }
.skp-cal-cell.today{ outline:1.5px solid rgba(249,115,22,.75);outline-offset:-1px;animation:today-pulse 2s ease-in-out infinite; }
.skp-cal-cell.today.active{ background:rgba(249,115,22,.28); }
.skp-cal-icon-flame,.skp-cal-icon-snow,.skp-cal-icon-heart{ width:11px;height:11px; }

/* Freeze bar */
.skp-freeze-wrap{ padding-top:11px;border-top:1px solid rgba(255,255,255,.06); }
.skp-freeze-row{ display:flex;align-items:center;gap:7px;margin-bottom:5px; }
.skp-freeze-lbl{ font-family:'Space Mono',monospace;font-size:7px;letter-spacing:1.5px;color:rgba(255,255,255,.3);flex:1; }
.skp-fz-gem{ width:22px;height:22px;display:flex;align-items:center;justify-content:center;border-radius:4px; }
.skp-fz-gem.active{ background:rgba(96,165,250,.1); }
.skp-fz-gem.empty{ border:1px dashed rgba(255,255,255,.1); }
.skp-freeze-hint{ font-family:'Space Mono',monospace;font-size:7px;color:rgba(255,255,255,.2); }
.skp-crystal{ display:block; }

/* Revive banner */
.skp-revive{ margin-top:12px;padding:12px;background:rgba(244,114,182,.06);border:1px solid rgba(244,114,182,.22);border-radius:10px; }
.skp-revive-top{ display:flex;align-items:center;gap:9px;margin-bottom:10px; }
.skp-revive-title{ font-family:'Space Mono',monospace;font-size:7.5px;letter-spacing:1.8px;color:#f472b6; }
.skp-revive-sub  { font-family:'Space Mono',monospace;font-size:7px;color:rgba(244,114,182,.6);margin-top:2px; }
.skp-revive-btn{
  width:100%;padding:8px;border:1px solid rgba(244,114,182,.3);border-radius:7px;
  background:rgba(244,114,182,.1);color:#f472b6;
  font-family:'Space Mono',monospace;font-size:8px;letter-spacing:1.5px;cursor:pointer;
  transition:background .15s;
}
.skp-revive-btn:hover{ background:rgba(244,114,182,.22); }

/* ── FREEZE USED MODAL ────────────────────────────────────────────────────────── */
.sk-fz-overlay{
  position:fixed;inset:0;z-index:3000;background:rgba(0,0,0,.62);
  display:flex;align-items:center;justify-content:center;
  opacity:0;pointer-events:none;transition:opacity .25s;
}
.sk-fz-overlay.open{ opacity:1;pointer-events:auto; }
.sk-fz-box{
  background:var(--bg2,#111);border:1px solid rgba(96,165,250,.3);
  border-radius:16px;padding:28px 24px;width:min(280px,calc(100vw - 32px));text-align:center;
  box-shadow:0 20px 56px rgba(0,0,0,.65);
  transform:scale(.94);transition:transform .25s;
}
.sk-fz-overlay.open .sk-fz-box{ transform:scale(1); }
.sk-fz-icon{ display:flex;justify-content:center;margin-bottom:12px; }
.sk-fz-title{ font-family:'Space Mono',monospace;font-size:8.5px;letter-spacing:2.5px;color:#93c5fd;margin-bottom:10px; }
.sk-fz-body{ font-family:'Space Mono',monospace;font-size:10px;color:var(--muted,#777);line-height:1.65;margin-bottom:16px; }
.sk-fz-body strong{ color:#93c5fd; }
.sk-fz-close{
  padding:8px 20px;border:1px solid rgba(96,165,250,.35);border-radius:7px;
  background:rgba(96,165,250,.08);color:#93c5fd;
  font-family:'Space Mono',monospace;font-size:8px;letter-spacing:1.5px;cursor:pointer;
  transition:background .15s;
}
.sk-fz-close:hover{ background:rgba(96,165,250,.2); }

/* ── FREEZE EARNED TOAST ──────────────────────────────────────────────────────── */
.sk-fz-toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(16px);
  background:var(--bg2,#111);border:1px solid rgba(96,165,250,.35);border-radius:10px;
  padding:10px 16px;display:flex;align-items:center;gap:8px;
  font-family:'Space Mono',monospace;font-size:9px;color:#93c5fd;
  box-shadow:0 8px 28px rgba(0,0,0,.55);z-index:3000;
  opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;
}
.sk-fz-toast.show{ opacity:1;transform:translateX(-50%) translateY(0); }

/* ── UPGRADE MODAL ───────────────────────────────────────────────────────────── */
#upgrade-modal-overlay{position:fixed;inset:0;z-index:1100;background:rgba(0,0,0,0.7);
  opacity:0;pointer-events:none;transition:opacity .2s;}
#upgrade-modal-overlay.open{opacity:1;pointer-events:auto;}
#upgrade-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.96);
  z-index:1101;background:var(--bg2);border:1px solid rgba(245,158,11,0.3);border-radius:4px;
  padding:32px 28px;width:360px;max-height:90vh;overflow-y:auto;display:flex;flex-direction:column;align-items:center;gap:12px;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;text-align:center;}
#upgrade-modal.open{opacity:1;pointer-events:auto;transform:translate(-50%,-50%) scale(1);}
.upgrade-modal-icon{font-size:28px;color:#f59e0b;line-height:1;}
.upgrade-modal-title{font-family:var(--font-mono);font-size:12px;letter-spacing:4px;color:#f59e0b;}
.upgrade-modal-tagline{font-family:var(--font-body);font-size:13px;color:var(--muted);letter-spacing:0.3px;}
.upgrade-modal-plans{display:flex;gap:10px;width:100%;}
.um-plan{flex:1;border:1px solid rgba(245,158,11,0.2);border-radius:6px;padding:10px 12px;cursor:pointer;text-align:center;transition:border-color .15s,background .15s;}
.um-plan:hover{border-color:rgba(245,158,11,0.5);}
.um-plan.um-plan-active{border-color:#f59e0b;background:rgba(245,158,11,0.08);}
.um-plan-label{font-family:var(--font-mono);font-size:9px;letter-spacing:2px;color:var(--muted);}
.um-plan-price{font-family:var(--font-mono);font-size:20px;color:var(--text);line-height:1.2;}
.um-plan-price span{font-size:11px;color:var(--muted);}
.um-plan-save{font-family:var(--font-body);font-size:10px;color:#f59e0b;margin-top:2px;}
.upgrade-modal-features{list-style:none;padding:0;margin:0;width:100%;display:flex;flex-direction:column;gap:8px;}
.upgrade-modal-features li{font-family:var(--font-body);font-size:13px;color:var(--text);
  text-align:left;display:flex;align-items:baseline;gap:8px;padding:6px 10px;
  background:rgba(245,158,11,0.04);border:1px solid rgba(245,158,11,0.1);border-radius:3px;}
.um-check{color:#f59e0b;font-size:12px;flex-shrink:0;}
.upgrade-modal-buy-btn{background:rgba(245,158,11,0.1);border:1px solid rgba(245,158,11,0.5);
  color:#f59e0b;font-family:var(--font-mono);font-size:10px;letter-spacing:2px;padding:12px 20px;
  border-radius:2px;cursor:pointer;width:100%;transition:background .15s,border-color .15s;margin-top:4px;}
.upgrade-modal-buy-btn:hover:not(:disabled){background:rgba(245,158,11,0.2);border-color:#f59e0b;}
.upgrade-modal-buy-btn:disabled{opacity:0.5;cursor:not-allowed;}
.upgrade-modal-error{font-family:var(--font-body);font-size:11px;color:#f87171;min-height:14px;width:100%;}

/* ── PRO WELCOME MODAL ───────────────────────────────────────────────────────── */
#pro-welcome-overlay{position:fixed;inset:0;z-index:1100;background:rgba(0,0,0,0.7);
  opacity:0;pointer-events:none;transition:opacity .2s;}
#pro-welcome-overlay.open{opacity:1;pointer-events:auto;}
#pro-welcome-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.96);
  z-index:1101;background:var(--bg2);border:1px solid rgba(74,222,128,0.3);border-radius:4px;
  padding:32px 28px;width:380px;max-height:90vh;overflow-y:auto;display:flex;flex-direction:column;align-items:center;gap:12px;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;text-align:center;}
#pro-welcome-modal.open{opacity:1;pointer-events:auto;transform:translate(-50%,-50%) scale(1);}
#pro-welcome-modal .upgrade-modal-title{color:#4ade80;}
.pro-welcome-steps{list-style:none;padding:0;margin:0;width:100%;display:flex;flex-direction:column;gap:8px;}
.pro-welcome-steps li{font-family:var(--font-body);font-size:12px;color:var(--text);line-height:1.5;
  text-align:left;display:flex;align-items:flex-start;gap:10px;padding:8px 10px;
  background:rgba(74,222,128,0.04);border:1px solid rgba(74,222,128,0.12);border-radius:3px;}
.pro-welcome-steps li strong{font-size:12.5px;}
.pro-welcome-steps .um-check{color:#4ade80;}
#pro-welcome-done-btn{background:rgba(74,222,128,0.1);border:1px solid rgba(74,222,128,0.5);color:#4ade80;}
#pro-welcome-done-btn:hover{background:rgba(74,222,128,0.2);border-color:#4ade80;}

/* ── SAVE-PROGRESS PROMPT (benefit-first signup nudge) ───────────────────────── */
#save-progress-overlay{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,0.7);
  opacity:0;pointer-events:none;transition:opacity .2s;}
#save-progress-overlay.open{opacity:1;pointer-events:auto;}
#save-progress-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.96);
  z-index:10001;background:var(--bg2);border:1px solid rgba(var(--accent-rgb),0.35);border-radius:4px;
  padding:32px 28px;width:380px;max-height:90vh;overflow-y:auto;display:flex;flex-direction:column;align-items:center;gap:12px;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;text-align:center;}
#save-progress-modal.open{opacity:1;pointer-events:auto;transform:translate(-50%,-50%) scale(1);}
#spm-icon{font-size:22px;color:var(--accent);line-height:1;}
#spm-title{font-family:var(--font-mono);font-size:11px;letter-spacing:3px;color:var(--accent);}
#spm-stat{font-family:var(--font-body);font-size:14px;font-weight:600;color:var(--text);word-break:break-word;}
#spm-tagline{font-family:var(--font-body);font-size:13px;color:var(--muted);letter-spacing:0.3px;line-height:1.5;}
.spm-steps{list-style:none;padding:0;margin:0;width:100%;display:flex;flex-direction:column;gap:8px;}
.spm-steps li{font-family:var(--font-body);font-size:12px;color:var(--text);line-height:1.5;
  text-align:left;display:flex;align-items:flex-start;gap:10px;padding:8px 10px;
  background:rgba(var(--accent-rgb),0.04);border:1px solid rgba(var(--accent-rgb),0.12);border-radius:3px;}
.spm-steps li strong{font-size:12.5px;}
.spm-steps .um-check{color:var(--accent);}
#spm-cta{background:rgba(var(--accent-rgb),0.1);border:1px solid rgba(var(--accent-rgb),0.5);color:var(--accent);
  font-family:var(--font-mono);font-size:10px;letter-spacing:2px;padding:12px 20px;border-radius:2px;
  cursor:pointer;width:100%;transition:background .15s,border-color .15s;}
#spm-cta:hover{background:rgba(var(--accent-rgb),0.2);border-color:var(--accent);}
#spm-skip{align-self:center;}
@media(max-width:480px){#save-progress-modal{width:calc(100vw - 32px);padding:24px 20px;}}

/* ── ACTION STRIP (Your Study Material) ─────────────────────────────────────── */
.cs-action-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:100%;}
.cs-action-card{border:1px solid var(--border);border-radius:8px;padding:14px;background:var(--bg2);
  display:flex;flex-direction:column;align-items:flex-start;gap:6px;text-align:left;
  cursor:pointer;transition:all .2s;position:relative;font-family:inherit;color:var(--text);overflow:hidden;
  transform-style:preserve-3d;will-change:transform;}
.cs-action-card:not(.cs-action-soon):hover{border-color:rgba(var(--accent-rgb),.65);
  background:rgba(var(--accent-rgb),.05);transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.3);}
.cs-action-card:hover .cs-card-shine{opacity:1;}
/* muted gold PRO tags — hidden for pro users via .is-pro on body */
body.is-pro .cs-create-pro{display:none;}
.cs-action-icon{width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:color-mix(in srgb,var(--ac) 16%,transparent);color:var(--ac);margin-bottom:2px;}
.cs-action-title{font-family:var(--font-display);font-weight:800;font-size:15px;color:var(--text);}
.cs-action-sub{font-family:var(--font-body);font-size:11.5px;color:var(--muted);line-height:1.35;flex:1;}
.cs-action-btn{margin-top:6px;font-family:var(--font-mono);font-size:9px;letter-spacing:1.5px;text-transform:uppercase;
  border:1px solid rgba(var(--accent-rgb),.4);color:var(--accent);padding:6px 14px;border-radius:6px;}
.cs-action-soon{cursor:default;opacity:.5;}
.cs-action-soon .cs-action-btn{border-color:var(--border2);color:var(--muted);}
@media(max-width:760px){.cs-action-strip{grid-template-columns:repeat(2,1fr);}}

/* Graphy hero card — same shape as the other cards, theme accent border
   (not a hardcoded color — the light theme swaps --accent to orange, so a
   fixed cyan clashed badly against the rest of the light selector screen) */
.cs-action-graphy{border-color:rgba(var(--accent-rgb),.3);background:rgba(var(--accent-rgb),.04);}
.cs-action-graphy:hover{border-color:rgba(var(--accent-rgb),.7)!important;background:rgba(var(--accent-rgb),.08)!important;}
.cs-action-graphy .cs-action-btn{border-color:rgba(var(--accent-rgb),.4);color:var(--accent);}

/* Community — double width, reads as the flagship social surface */
.cs-action-wide{grid-column:span 2;}
@media(max-width:760px){.cs-action-wide{grid-column:span 2;}}

/* "Create" card — trigger button unwraps its own styling, menu holds the merged actions */
.cs-action-create{padding:0;overflow:visible;z-index:2;}
.cs-action-create.menu-open{z-index:30;}
.cs-action-create-trigger{all:unset;box-sizing:border-box;display:flex;flex-direction:column;align-items:flex-start;
  gap:6px;width:100%;padding:14px;cursor:pointer;}
.cs-create-menu{position:absolute;left:0;right:0;top:calc(100% + 6px);z-index:20;
  background:var(--bg2);border:1px solid var(--border2);border-radius:8px;padding:6px;
  box-shadow:0 12px 32px rgba(0,0,0,.4);display:flex;flex-direction:column;gap:2px;
  opacity:0;pointer-events:none;transform:translateY(-4px);transition:opacity .15s,transform .15s;}
.cs-action-create.menu-open .cs-create-menu{opacity:1;pointer-events:auto;transform:none;}
.cs-create-menu button{display:flex;align-items:center;gap:10px;width:100%;background:none;border:none;
  color:var(--text);font-family:var(--font-body);font-size:12.5px;padding:9px 10px;border-radius:6px;
  cursor:pointer;text-align:left;transition:background .15s;}
.cs-create-menu button:hover{background:rgba(var(--accent-rgb),.1);}
.cs-create-menu button svg{flex-shrink:0;color:var(--muted);}
.cs-create-pro{margin-left:auto;font-family:var(--font-mono);font-size:8px;letter-spacing:1px;
  color:#f59e0b;opacity:.7;flex-shrink:0;}
.cs-create-all{border-bottom:1px solid var(--border2);margin-bottom:2px;padding-bottom:11px!important;}

/* ── MY LIBRARY MODAL ───────────────────────────────────────────────────────── */
#library-overlay{position:fixed;inset:0;z-index:1060;background:rgba(0,0,0,.72);
  opacity:0;pointer-events:none;transition:opacity .2s;}
#library-overlay.open{opacity:1;pointer-events:auto;}
/* ── FULL-PAGE SURFACES (library, editors, viewers) ─────────────────────────── */
.lib-page-overlay{display:none;}
.lib-page{position:fixed;inset:0;z-index:1061;background:var(--bg);display:flex;flex-direction:column;
  opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .24s ease,transform .24s ease;}
.lib-page.open{opacity:1;pointer-events:auto;transform:none;}
#note-editor.lib-page,#deck-editor.lib-page{z-index:1071;}
#note-viewer.lib-page,#deck-viewer.lib-page{z-index:1081;}
.page-bar{display:flex;align-items:center;gap:14px;padding:13px 22px;flex-shrink:0;
  border-bottom:1px solid var(--border);background:var(--bg2);}
.page-back{font-family:var(--font-mono);font-size:11px;letter-spacing:1px;color:var(--muted);
  background:none;border:1px solid var(--border2);border-radius:8px;padding:8px 14px;cursor:pointer;
  transition:color .15s,border-color .15s,background .15s;white-space:nowrap;}
.page-back:hover{color:var(--accent);border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.06);}
.page-bar-title{font-family:var(--font-mono);font-size:11px;letter-spacing:3px;text-transform:uppercase;color:var(--accent);}
.page-bar-spacer{flex:1;min-width:0;}
.page-scroll{flex:1;overflow-y:auto;}
.page-col{width:min(820px,92vw);margin:0 auto;padding:30px 0 90px;}

.lib-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px;flex-wrap:wrap;}
.lib-tabs{display:flex;gap:4px;background:rgba(255,255,255,.04);border-radius:8px;padding:3px;}
.lib-tab{font-family:var(--font-mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;
  color:var(--muted);background:none;border:none;padding:7px 14px;border-radius:6px;cursor:pointer;transition:all .15s;}
.lib-tab.active{background:rgba(var(--accent-rgb),.14);color:var(--accent);}
.lib-bar{display:flex;align-items:center;gap:8px;margin-bottom:12px;flex-wrap:wrap;}
.lib-usage{font-family:var(--font-mono);font-size:11px;color:var(--muted);margin-right:auto;}
.lib-new-btn{font-family:var(--font-mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;
  border:1px solid rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.1);color:var(--accent);
  padding:8px 16px;border-radius:6px;cursor:pointer;transition:all .15s;}
.lib-new-btn:hover{background:rgba(var(--accent-rgb),.2);}
.lib-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;min-height:120px;}
.lib-item{position:relative;display:flex;flex-direction:column;gap:10px;border:1px solid var(--border);
  border-radius:14px;padding:16px 16px 14px;background:rgba(255,255,255,.02);cursor:pointer;min-height:120px;
  transition:border-color .15s,background .15s,transform .15s,box-shadow .15s;}
.lib-item:hover{border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.05);
  transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,.28);}
.lib-item-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px;}
.lib-item-title{font-family:var(--font-display);font-weight:700;font-size:15px;color:var(--text);line-height:1.3;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.lib-item-sub{display:flex;flex-direction:column;align-items:flex-start;gap:7px;margin-top:auto;}
.lib-chip{font-family:var(--font-mono);font-size:8px;letter-spacing:1px;text-transform:uppercase;
  background:rgba(var(--accent-rgb),.12);color:var(--accent);padding:3px 9px;border-radius:10px;flex-shrink:0;
  align-self:flex-start;}
.lib-snippet{font-family:var(--font-body);font-size:12px;color:var(--muted);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.lib-item-edit,.lib-item-del,.lib-item-share,.lib-item-unsave{position:absolute;top:10px;background:rgba(0,0,0,.35);
  border:1px solid var(--border2);color:var(--muted);font-size:12px;cursor:pointer;width:26px;height:26px;
  border-radius:7px;flex-shrink:0;display:flex;align-items:center;justify-content:center;opacity:0;
  transition:opacity .15s,color .15s,background .15s;}
.lib-item:hover .lib-item-edit,.lib-item:hover .lib-item-del,
.lib-item:hover .lib-item-share,.lib-item:hover .lib-item-unsave{opacity:1;}
.lib-item-share{right:74px;} .lib-item-edit{right:42px;} .lib-item-del,.lib-item-unsave{right:10px;}
.lib-item-edit:hover,.lib-item-share:hover{color:var(--accent);background:rgba(var(--accent-rgb),.15);}
.lib-item-del:hover,.lib-item-unsave:hover{color:#f87171;background:rgba(248,113,113,.15);}
/* visibility chip on owned list items */
.lib-vis{font-family:var(--font-mono);font-size:8px;letter-spacing:.5px;text-transform:uppercase;
  padding:2px 7px;border-radius:9px;margin-left:8px;vertical-align:middle;white-space:nowrap;font-weight:600;}
.lib-vis-pub{background:rgba(34,197,94,.14);color:#22c55e;}
.lib-vis-rej{background:rgba(248,113,113,.14);color:#f87171;}
.lib-toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(12px);z-index:9999;padding:9px 18px;border-radius:8px;font-size:12px;color:rgba(255,160,80,0.95);background:rgba(20,10,0,0.93);border:1px solid rgba(255,120,40,0.4);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;white-space:nowrap;}
.lib-toast.lib-toast-show{opacity:1;transform:translateX(-50%) translateY(0);}
.lib-loading,.lib-empty{grid-column:1/-1;font-family:var(--font-body);font-size:13px;color:var(--muted);
  text-align:center;padding:48px 0;}

/* ── COMMUNITY / DISCOVERY HUB ─────────────────────────────────────────────── */
.hub-col{width:min(960px,92vw);margin:0 auto;padding:24px 0 90px;}
.hub-search-row{display:flex;gap:10px;align-items:center;margin-bottom:16px;flex-wrap:wrap;}
.hub-search-input{flex:1;min-width:180px;background:rgba(255,255,255,.05);border:1px solid var(--border2);
  border-radius:10px;color:var(--text);font-family:var(--font-body);font-size:13px;padding:10px 14px;outline:none;
  transition:border-color .15s;}
.hub-search-input:focus{border-color:rgba(var(--accent-rgb),.5);}
.hub-select{background:rgba(255,255,255,.04);border:1px solid var(--border2);border-radius:9px;
  color:var(--muted);font-family:var(--font-mono);font-size:10px;letter-spacing:.5px;padding:9px 12px;
  outline:none;color-scheme:dark;cursor:pointer;}
.hub-select option{background:#15161c;color:var(--text);}
.hub-select:focus{border-color:rgba(var(--accent-rgb),.5);color:var(--text);}
.hub-tabs{display:flex;gap:4px;background:rgba(255,255,255,.04);border-radius:10px;padding:3px;
  margin-bottom:18px;overflow-x:auto;}
.hub-tab{font-family:var(--font-mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;
  color:var(--muted);background:none;border:none;padding:8px 14px;border-radius:7px;cursor:pointer;
  transition:all .15s;white-space:nowrap;display:flex;align-items:center;gap:6px;}
.hub-tab.active{background:rgba(var(--accent-rgb),.14);color:var(--accent);}
.hub-cnt{font-size:9px;background:rgba(255,255,255,.1);padding:2px 7px;border-radius:9px;min-width:22px;text-align:center;}
.hub-tab.active .hub-cnt{background:rgba(var(--accent-rgb),.2);}
.hub-results{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;min-height:120px;}
.hub-card{display:flex;flex-direction:column;gap:8px;border:1px solid var(--border);border-radius:14px;
  padding:16px;background:rgba(255,255,255,.02);cursor:pointer;min-height:140px;
  transition:border-color .15s,background .15s,transform .15s,box-shadow .15s;}
.hub-card:hover{border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.05);
  transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.28);}
.hub-card-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.hub-type-badge{font-family:var(--font-mono);font-size:8px;letter-spacing:1.5px;text-transform:uppercase;
  padding:3px 8px;border-radius:8px;flex-shrink:0;}
.hub-type-deck{background:rgba(245,158,11,.14);color:#f59e0b;}
.hub-type-note{background:rgba(59,130,246,.14);color:#3b82f6;}
.hub-course-chip{font-family:var(--font-mono);font-size:8px;letter-spacing:.8px;text-transform:uppercase;
  background:rgba(var(--accent-rgb),.1);color:var(--accent);padding:3px 8px;border-radius:8px;
  max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.hub-card-title{font-family:var(--font-display);font-weight:700;font-size:15px;color:var(--text);
  line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.hub-snippet{font-family:var(--font-body);font-size:12px;color:var(--muted);line-height:1.45;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.hub-card-foot{display:flex;align-items:center;gap:8px;margin-top:auto;flex-wrap:wrap;}
.hub-author{font-family:var(--font-mono);font-size:10px;color:var(--muted);letter-spacing:.3px;}
.hub-stars-row{display:flex;align-items:center;gap:6px;margin-left:auto;}
.hub-stars-area{display:flex;align-items:center;gap:2px;cursor:default;}
.hub-stars-area.hub-stars-pick{cursor:pointer;}
.hub-star{font-size:13px;color:rgba(245,158,11,.25);transition:color .1s;line-height:1;}
.hub-star.on{color:#f59e0b;}
.hub-star.hover{color:#f59e0b;}
.hub-rating-txt{font-family:var(--font-mono);font-size:9px;color:var(--muted);margin-left:2px;}
.hub-save-btn{font-family:var(--font-mono);font-size:9px;letter-spacing:.5px;text-transform:uppercase;
  border:1px solid var(--border2);background:rgba(255,255,255,.04);color:var(--muted);
  padding:5px 10px;border-radius:7px;cursor:pointer;transition:all .15s;white-space:nowrap;flex-shrink:0;}
.hub-save-btn:hover{border-color:rgba(var(--accent-rgb),.5);color:var(--accent);background:rgba(var(--accent-rgb),.08);}
.hub-save-btn[data-saved="1"]{color:var(--accent);border-color:rgba(var(--accent-rgb),.4);background:rgba(var(--accent-rgb),.1);}
.hub-user-card{display:flex;align-items:center;gap:14px;border:1px solid var(--border);border-radius:14px;
  padding:18px;background:rgba(255,255,255,.02);cursor:pointer;
  transition:border-color .15s,background .15s,transform .15s;}
.hub-user-card:hover{border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.04);transform:translateY(-1px);}
.hub-user-avatar{width:38px;height:38px;border-radius:50%;background:rgba(var(--accent-rgb),.2);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-weight:700;
  font-size:15px;color:var(--accent);flex-shrink:0;}
.hub-user-info{flex:1;min-width:0;}
.hub-user-name{font-family:var(--font-mono);font-size:13px;color:var(--text);font-weight:700;}
.hub-user-counts{font-family:var(--font-body);font-size:11px;color:var(--muted);margin-top:3px;}
.hub-more-wrap{display:flex;justify-content:center;margin-top:22px;}
.hub-more-btn{font-family:var(--font-mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;
  border:1px solid var(--border2);background:rgba(255,255,255,.04);color:var(--muted);
  padding:10px 28px;border-radius:9px;cursor:pointer;transition:all .15s;}
.hub-more-btn:hover{border-color:rgba(var(--accent-rgb),.5);color:var(--accent);}
.hub-empty,.hub-loading{grid-column:1/-1;font-family:var(--font-body);font-size:13px;color:var(--muted);
  text-align:center;padding:60px 0;}

/* ── SHARE / PUBLISH MODAL (community sharing gate) ──────────────────────────── */
.share-overlay{display:none;position:fixed;inset:0;z-index:1090;background:rgba(0,0,0,.6);backdrop-filter:blur(3px);}
.share-overlay.open{display:block;}
.share-modal{display:none;position:fixed;z-index:1091;top:50%;left:50%;transform:translate(-50%,-48%);
  width:min(440px,92vw);background:var(--bg2);border:1px solid var(--border);border-radius:16px;
  padding:24px 24px 20px;box-shadow:0 24px 70px rgba(0,0,0,.5);}
.share-modal.open{display:block;transform:translate(-50%,-50%);}
.share-head{font-family:var(--font-display);font-weight:800;font-size:19px;color:var(--text);margin-bottom:14px;}
.share-status{font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;padding:9px 12px;border-radius:9px;margin-bottom:12px;}
.share-priv{background:rgba(255,255,255,.05);color:var(--muted);}
.share-pub{background:rgba(34,197,94,.12);color:#22c55e;}
.share-rej{background:rgba(248,113,113,.12);color:#f87171;}
.share-note{font-family:var(--font-body);font-size:12.5px;line-height:1.5;color:var(--muted);margin-bottom:16px;}
.share-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap;}
.share-btn{font-family:var(--font-mono);font-size:11px;letter-spacing:1px;text-transform:uppercase;
  border:1px solid var(--border2);background:rgba(255,255,255,.04);color:var(--text);
  padding:9px 16px;border-radius:8px;cursor:pointer;transition:all .15s;}
.share-btn:hover{border-color:var(--muted);}
.share-btn:disabled{opacity:.6;cursor:default;}
.share-pub-btn{border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.12);color:var(--accent);}
.share-pub-btn:hover{background:rgba(var(--accent-rgb),.22);}
.share-msg{font-family:var(--font-body);font-size:12.5px;line-height:1.45;margin-top:14px;min-height:1px;}
.share-msg.share-ok{color:#22c55e;} .share-msg.share-err{color:#f87171;}

/* ── BAN / TIMEOUT MODAL ────────────────────────────────────────────────────── */
.ban-modal{display:none;position:fixed;z-index:1092;top:50%;left:50%;transform:translate(-50%,-48%);
  width:min(400px,92vw);background:var(--bg2);border:1px solid var(--border);border-radius:16px;
  padding:28px 24px 22px;box-shadow:0 24px 70px rgba(0,0,0,.55);text-align:center;}
.ban-modal.open{display:block;transform:translate(-50%,-50%);}
.ban-modal.type-timeout{border-color:rgba(251,191,36,.35);}
.ban-modal.type-ban{border-color:rgba(248,113,113,.35);}
.ban-icon{font-size:30px;margin-bottom:10px;line-height:1;}
.ban-title{font-family:var(--font-mono);font-weight:700;font-size:15px;letter-spacing:.8px;
  text-transform:uppercase;margin-bottom:12px;}
.ban-modal.type-timeout .ban-title{color:#fbbf24;}
.ban-modal.type-ban .ban-title{color:#f87171;}
.ban-reason{font-size:13px;color:var(--muted);line-height:1.55;margin-bottom:14px;}
.ban-timer-wrap{margin:14px auto;}
.ban-timer{font-family:var(--font-mono);font-size:38px;letter-spacing:5px;color:#fbbf24;
  font-weight:700;line-height:1;}
.ban-timer-label{font-size:10px;color:var(--muted);margin-top:6px;text-transform:uppercase;letter-spacing:1.5px;}
.ban-note{font-size:12px;color:var(--muted);margin:14px 0 4px;}
.ban-actions{display:flex;gap:8px;justify-content:center;margin-top:16px;flex-wrap:wrap;}
.ban-appeal-btn{background:rgba(99,102,241,.1);border-color:rgba(99,102,241,.3);color:#818cf8;}
.ban-appeal-btn:hover{background:rgba(99,102,241,.2);}
.ban-appeal-form{margin-top:16px;text-align:left;}
.ban-appeal-textarea{width:100%;min-height:90px;background:rgba(255,255,255,.04);
  border:1px solid var(--border2);border-radius:8px;color:var(--text);
  font-family:var(--font-body);font-size:13px;line-height:1.5;padding:10px 12px;
  resize:vertical;box-sizing:border-box;}
.ban-appeal-textarea:focus{outline:none;border-color:rgba(99,102,241,.5);}
.ban-appeal-row{display:flex;align-items:center;justify-content:space-between;margin-top:8px;gap:10px;}
.ban-appeal-msg{font-size:12px;color:var(--muted);flex:1;}
.ban-appeal-msg.ok{color:#4ade80;} .ban-appeal-msg.err{color:#f87171;}

/* ── REPORT CONTENT MODAL ───────────────────────────────────────────────────── */
.report-select,.report-textarea{width:100%;background:rgba(255,255,255,.04);
  border:1px solid var(--border2);border-radius:8px;color:var(--text);
  font-family:var(--font-body);font-size:13px;line-height:1.5;padding:10px 12px;
  box-sizing:border-box;margin-bottom:12px;}
.report-select:focus,.report-textarea:focus{outline:none;border-color:rgba(248,113,113,.5);}
.report-select option{background:var(--bg2);color:var(--text);}
.report-textarea{min-height:72px;resize:vertical;}
.report-submit-btn{border-color:rgba(248,113,113,.5);background:rgba(248,113,113,.12);color:#f87171;}
.report-submit-btn:hover{background:rgba(248,113,113,.22);}
.nv-report{color:#f87171 !important;}

/* ── NOTE / DECK EDITORS (full-page WYSIWYG) ────────────────────────────────── */
.ne-doc-col{width:min(720px,92vw);margin:0 auto;padding:34px 0 120px;display:flex;flex-direction:column;gap:14px;}
.ne-title{background:none;border:none;border-radius:0;color:var(--text);
  font-family:var(--font-display);font-weight:800;font-size:30px;line-height:1.2;padding:0;outline:none;width:100%;}
.ne-title::placeholder{color:var(--muted);opacity:.5;}
.ne-meta-row{display:flex;gap:10px;flex-wrap:wrap;padding-bottom:8px;border-bottom:1px solid var(--border);}
.ne-select,.ne-unit{background:rgba(255,255,255,.04);border:1px solid var(--border2);border-radius:8px;
  color:var(--muted);font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;padding:7px 11px;outline:none;}
.ne-select{flex:1;min-width:160px;}
.ne-unit{width:180px;}
.ne-select:focus,.ne-unit:focus{border-color:rgba(var(--accent-rgb),.5);color:var(--text);}
/* native dropdown list — force dark so options aren't white-on-white */
.ne-select{color-scheme:dark;}
.ne-select option{background:#15161c;color:var(--text);}
/* WYSIWYG document surface */
.ne-doc{outline:none;min-height:48vh;font-family:var(--font-body);font-size:16px;line-height:1.7;color:var(--text);}
.ne-doc:empty:before{content:attr(data-ph);color:var(--muted);opacity:.55;pointer-events:none;}
.ne-doc:focus{outline:none;}
.ne-doc img{cursor:pointer;}
.ne-img-err{font-size:11px;color:#f87171;margin-left:8px;}
.ne-doc img.ne-img-sel{outline:2px solid var(--accent);outline-offset:1px;}
/* in-editor image resize handles (mirror the selected image's box) */
.ne-img-resizer{position:fixed;z-index:1080;border:1.5px solid rgba(var(--accent-rgb),.8);
  pointer-events:none;display:none;box-sizing:border-box;}
.ne-img-resizer.show{display:block;}
.ne-rh{position:absolute;width:12px;height:12px;background:var(--accent);border:2px solid #fff;
  border-radius:50%;box-sizing:border-box;pointer-events:auto;touch-action:none;box-shadow:0 1px 3px rgba(0,0,0,.4);}
.ne-rh-nw{left:-7px;top:-7px;cursor:nwse-resize;}
.ne-rh-ne{right:-7px;top:-7px;cursor:nesw-resize;}
.ne-rh-sw{left:-7px;bottom:-7px;cursor:nesw-resize;}
.ne-rh-se{right:-7px;bottom:-7px;cursor:nwse-resize;}
.ne-rh-n{left:50%;top:-7px;transform:translateX(-50%);cursor:ns-resize;}
.ne-rh-s{left:50%;bottom:-7px;transform:translateX(-50%);cursor:ns-resize;}
.ne-rh-w{left:-7px;top:50%;transform:translateY(-50%);cursor:ew-resize;}
.ne-rh-e{right:-7px;top:50%;transform:translateY(-50%);cursor:ew-resize;}
/* math chip — rendered KaTeX, click to edit */
.math-chip{display:inline-block;cursor:pointer;padding:1px 4px;margin:0 1px;border-radius:5px;
  border:1px solid transparent;transition:background .12s,border-color .12s;}
.math-chip:hover{background:rgba(var(--accent-rgb),.12);border-color:rgba(var(--accent-rgb),.4);}
.math-chip[data-display="1"]{display:block;text-align:center;margin:.6em auto;padding:6px 10px;}
/* sticky toolbar */
.ne-toolbar-wrap{flex-shrink:0;background:var(--bg2);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:4;}
.ne-save{font-family:var(--font-mono);font-size:10px;letter-spacing:2px;text-transform:uppercase;
  border:1px solid rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.12);color:var(--accent);
  padding:9px 22px;border-radius:8px;cursor:pointer;transition:background .15s;}
.ne-save:hover{background:rgba(var(--accent-rgb),.24);}
.ne-delete{font-family:var(--font-mono);font-size:10px;letter-spacing:2px;text-transform:uppercase;
  border:1px solid rgba(248,113,113,.4);background:none;color:#f87171;padding:9px 16px;border-radius:8px;cursor:pointer;}
.ne-delete:hover{background:rgba(248,113,113,.1);}
/* math popup */
.ne-math-pop{position:fixed;z-index:1090;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(360px,92vw);max-height:90vh;background:var(--bg2);
  border:1px solid var(--border2);border-radius:12px;padding:14px;box-shadow:0 20px 50px rgba(0,0,0,.5);
  display:none;flex-direction:column;gap:10px;overflow:auto;}
.ne-math-pop.open{display:flex;}
.ne-math-pop-head{font-family:var(--font-mono);font-size:9px;letter-spacing:2px;text-transform:uppercase;color:var(--accent);}
.ne-math-input{background:rgba(255,255,255,.04);border:1px solid var(--border2);border-radius:8px;
  color:var(--text);font-family:var(--font-mono);font-size:14px;padding:9px 11px;outline:none;}
.ne-math-input:focus{border-color:rgba(var(--accent-rgb),.5);}
/* quick-insert symbol palette (grapher-style) */
.ne-math-pad{display:grid;grid-template-columns:repeat(8,1fr);gap:5px;}
.ne-mk{font-family:var(--font-body);font-size:14px;line-height:1;color:var(--text);
  background:rgba(255,255,255,.04);border:1px solid var(--border2);border-radius:7px;
  height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:background .1s,border-color .1s;}
.ne-mk:hover{background:rgba(var(--accent-rgb),.16);border-color:rgba(var(--accent-rgb),.5);color:var(--accent);}
.ne-math-preview{min-height:34px;max-height:28vh;display:flex;align-items:center;justify-content:center;padding:6px;
  background:rgba(255,255,255,.03);border-radius:8px;color:var(--text);font-size:15px;overflow:auto;}
.ne-math-preview:empty{display:none;}
.ne-math-pop-foot{display:flex;align-items:center;gap:8px;}
.ne-math-disp{flex:1;display:flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:10px;
  letter-spacing:1px;text-transform:uppercase;color:var(--muted);cursor:pointer;}
.ne-math-disp input{accent-color:var(--accent);}
.ne-math-btn{font-family:var(--font-mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;
  border-radius:7px;padding:8px 14px;cursor:pointer;border:1px solid var(--border2);background:none;color:var(--muted);}
.ne-math-cancel:hover{color:var(--text);border-color:var(--border2);}
.ne-math-ok{border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.12);color:var(--accent);}
.ne-math-ok:hover{background:rgba(var(--accent-rgb),.24);}
.de-rows-head{display:grid;grid-template-columns:36px 1fr 1.4fr 1.4fr 28px;gap:10px;margin-top:8px;
  font-family:var(--font-mono);font-size:8px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);padding:0 2px;}
.de-rows-head span:first-child{visibility:hidden;}
.de-rows{display:flex;flex-direction:column;gap:10px;margin-top:8px;}
.de-row{display:flex;flex-direction:column;gap:8px;
  background:rgba(255,255,255,.02);border:1px solid var(--border);border-radius:12px;padding:12px;
  transition:border-color .15s;}
.de-row:hover{border-color:var(--border2);}
.de-row-main{display:grid;grid-template-columns:36px 1fr 1.4fr 1.4fr 28px;gap:10px;align-items:center;counter-increment:de-n;}
.de-row-main:before{content:counter(de-n);font-family:var(--font-mono);font-size:11px;
  color:var(--muted);text-align:center;}
#de-rows{counter-reset:de-n;}
.de-row-main input[type=text]{background:rgba(255,255,255,.04);border:1px solid var(--border2);border-radius:8px;
  color:var(--text);font-family:var(--font-body);font-size:14px;padding:10px 12px;outline:none;width:100%;}
.de-row-main input[type=text]:focus{border-color:rgba(var(--accent-rgb),.5);}
.de-row-del{background:none;border:none;color:var(--muted);font-size:14px;cursor:pointer;border-radius:7px;padding:6px;}
.de-row-del:hover{color:#f87171;background:rgba(248,113,113,.1);}
/* per-card extras: image upload + front toggle + live math preview */
.de-row-extra{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-left:46px;}
.de-img-btn,.de-img-rm,.de-math-btn{font-family:var(--font-mono);font-size:9px;letter-spacing:1px;text-transform:uppercase;
  border:1px solid var(--border2);background:none;color:var(--muted);padding:5px 10px;border-radius:7px;cursor:pointer;transition:all .15s;}
.de-img-btn:hover,.de-math-btn:hover{border-color:rgba(var(--accent-rgb),.5);color:var(--accent);}
.de-img-rm:hover{color:#f87171;border-color:rgba(248,113,113,.4);}
.de-front-lbl{display:flex;align-items:center;gap:5px;font-family:var(--font-mono);font-size:9px;letter-spacing:1px;
  text-transform:uppercase;color:var(--muted);cursor:pointer;}
.de-front-lbl input{accent-color:var(--accent);cursor:pointer;}
.de-img-thumb{width:40px;height:40px;object-fit:cover;border-radius:6px;border:1px solid var(--border2);cursor:zoom-in;}
.de-math-prev{flex:1;min-width:120px;font-size:13px;color:var(--muted);padding:4px 0;}
.de-math-prev:empty{display:none;}
@media(max-width:680px){.de-row-extra{padding-left:0;}}
.de-add-row{align-self:flex-start;margin-top:12px;font-family:var(--font-mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;
  border:1px dashed var(--border2);background:none;color:var(--muted);padding:10px 20px;border-radius:9px;cursor:pointer;transition:all .15s;}
.de-add-row:hover{border-color:rgba(var(--accent-rgb),.5);color:var(--accent);background:rgba(var(--accent-rgb),.04);}
@media(max-width:680px){
  .de-rows-head{display:none;}
  .de-row-main{grid-template-columns:1fr;gap:8px;}
  .de-row-main:before{display:none;}
  .de-row-del{justify-self:end;}
}

/* ── MARKDOWN BODY (note preview + in-course notes) ─────────────────────────── */
.markdown-body{font-family:var(--font-body);font-size:14px;line-height:1.65;color:var(--text);
  min-width:0;overflow-wrap:break-word;word-break:break-word;}
.markdown-body h1,.markdown-body h2,.markdown-body h3{font-family:var(--font-display);font-weight:800;
  line-height:1.25;margin:1em 0 .4em;color:var(--text);}
.markdown-body h1{font-size:1.5em;} .markdown-body h2{font-size:1.28em;} .markdown-body h3{font-size:1.1em;}
.markdown-body p{margin:.55em 0;} .markdown-body ul,.markdown-body ol{margin:.55em 0;padding-left:1.4em;}
.markdown-body li{margin:.2em 0;}
.markdown-body a{color:var(--accent);text-decoration:underline;}
.markdown-body code{font-family:var(--font-mono);font-size:.88em;background:rgba(255,255,255,.07);
  padding:.12em .4em;border-radius:4px;}
.markdown-body pre{background:rgba(255,255,255,.05);border:1px solid var(--border);border-radius:8px;
  padding:12px 14px;overflow-x:auto;margin:.7em 0;}
.markdown-body pre code{background:none;padding:0;}
.markdown-body blockquote{border-left:3px solid rgba(var(--accent-rgb),.5);margin:.7em 0;
  padding:.2em 0 .2em 14px;color:var(--muted);}
.markdown-body img{max-width:100%;max-height:420px;height:auto;width:auto;border-radius:8px;margin:.6em 0;display:block;
  background:transparent;cursor:zoom-in;}

/* Image lightbox — click any note image to view full size & zoom */
.img-lightbox{position:fixed;inset:0;z-index:5000;display:none;align-items:center;justify-content:center;
  background:rgba(8,9,12,.92);backdrop-filter:blur(6px);overscroll-behavior:contain;}
.img-lightbox.open{display:flex;}
.img-lightbox img{max-width:94vw;max-height:94vh;border-radius:6px;
  transform-origin:center center;transition:transform .12s ease;cursor:zoom-in;
  box-shadow:0 20px 60px rgba(0,0,0,.6);touch-action:none;user-select:none;}
.img-lightbox.zoomed img{cursor:grab;max-width:none;max-height:none;}
.img-lightbox-close{position:absolute;top:16px;right:20px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--border2);background:rgba(255,255,255,.06);color:var(--text);
  font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;}
.img-lightbox-close:hover{background:rgba(255,255,255,.12);}
.img-lightbox-hint{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.5px;color:var(--muted);
  background:rgba(0,0,0,.4);padding:5px 12px;border-radius:20px;pointer-events:none;}
.markdown-body table{border-collapse:collapse;margin:.7em 0;width:100%;}
.markdown-body th,.markdown-body td{border:1px solid var(--border);padding:6px 10px;font-size:.92em;}
.markdown-body hr{border:none;border-top:1px solid var(--border);margin:1em 0;}

/* ── EDITOR TOOLBAR + KATEX GUIDE ───────────────────────────────────────────── */
.ne-toolbar{display:flex;align-items:center;gap:4px;flex-wrap:wrap;}
.ne-tool{font-family:var(--font-mono);font-size:12px;color:var(--text);background:rgba(255,255,255,.05);
  border:1px solid var(--border2);border-radius:6px;min-width:30px;height:30px;padding:0 8px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;transition:all .12s;}
.ne-tool:hover{border-color:rgba(var(--accent-rgb),.55);color:var(--accent);background:rgba(var(--accent-rgb),.08);}
.ne-tool.active{border-color:rgba(var(--accent-rgb),.7);color:var(--accent);background:rgba(var(--accent-rgb),.14);}
.ne-tool:disabled{opacity:.6;cursor:default;}
.ne-tool-sep{width:1px;height:20px;background:var(--border2);margin:0 4px;}
.ne-katex-guide{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:0 14px;
  max-height:0;opacity:0;overflow:hidden;padding:0 14px;border:1px solid transparent;border-radius:8px;
  transition:max-height .32s ease,opacity .26s ease,gap .32s ease,padding .32s ease,border-color .32s ease,background .32s ease;}
.ne-katex-guide.open{max-height:260px;opacity:1;gap:6px 14px;padding:12px 14px;
  border-color:var(--border);background:rgba(var(--accent-rgb),.05);}
.ne-kx{font-family:var(--font-body);font-size:11.5px;color:var(--muted);}
.ne-kx code{font-family:var(--font-mono);font-size:11px;color:var(--accent);background:rgba(var(--accent-rgb),.1);
  padding:1px 5px;border-radius:4px;}
/* ── NOTE VIEWER + DECK STUDY VIEWER (full-page) ────────────────────────────── */
.nv-title{font-family:var(--font-display);font-weight:800;font-size:30px;line-height:1.2;color:var(--text);
  margin:0 0 18px;padding-bottom:18px;border-bottom:1px solid var(--border);}
.nv-edit{font-family:var(--font-mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;flex-shrink:0;
  border:1px solid rgba(var(--accent-rgb),.45);background:rgba(var(--accent-rgb),.1);color:var(--accent);
  padding:8px 16px;border-radius:8px;cursor:pointer;transition:background .15s;}
.nv-edit:hover{background:rgba(var(--accent-rgb),.22);}
.nv-body{font-size:16px;line-height:1.75;}
.dv-title{font-family:var(--font-display);font-weight:700;font-size:16px;color:var(--text);margin:0;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.dv-stage{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;
  padding:30px 22px 50px;width:min(680px,92vw);margin:0 auto;}
#dv-flip-view{display:flex;flex-direction:column;align-items:center;gap:22px;width:100%;}
#dv-study{width:100%;}

/* deck viewer mode switch (CARDS / TYPE / MATCH) */
.dv-mode-btn{padding:8px 12px;}
.dv-mode-btn:not(.active){border-color:rgba(var(--accent-rgb),.2);background:transparent;color:var(--muted);}
.dv-mode-btn.active{border-color:rgba(var(--accent-rgb),.45);background:rgba(var(--accent-rgb),.1);color:var(--accent);}

/* flashcard flipper */
.dv-card{perspective:1400px;height:min(380px,52vh);width:100%;max-width:560px;cursor:pointer;}
.dv-card-inner{position:relative;width:100%;height:100%;transition:transform .5s;transform-style:preserve-3d;}
.dv-card.flipped .dv-card-inner{transform:rotateY(180deg);}
.dv-face{position:absolute;inset:0;backface-visibility:hidden;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;gap:14px;padding:28px;
  border:1px solid var(--border2);border-radius:14px;background:rgba(255,255,255,.03);overflow-y:auto;}
.dv-front{border-color:rgba(var(--accent-rgb),.3);}
.dv-back{transform:rotateY(180deg);border-color:rgba(168,85,247,.4);background:rgba(168,85,247,.05);}
.dv-img{max-width:100%;max-height:200px;width:auto;object-fit:contain;border-radius:8px;
  border:1px solid var(--border2);background:rgba(255,255,255,.02);cursor:zoom-in;}
.dv-term{font-family:var(--font-display);font-weight:800;font-size:26px;color:var(--text);line-height:1.25;}
.dv-def{font-family:var(--font-body);font-size:16px;color:var(--text);line-height:1.5;}
.dv-ex{font-family:var(--font-body);font-size:13px;color:var(--muted);line-height:1.5;
  border-top:1px solid var(--border);padding-top:12px;}
.dv-controls{display:flex;align-items:center;justify-content:center;gap:20px;}
.dv-nav{font-family:var(--font-mono);font-size:11px;letter-spacing:1px;color:var(--text);
  background:rgba(255,255,255,.05);border:1px solid var(--border2);border-radius:8px;padding:9px 18px;cursor:pointer;transition:all .15s;}
.dv-nav:hover{border-color:rgba(var(--accent-rgb),.55);color:var(--accent);}
.dv-counter{font-family:var(--font-mono);font-size:12px;color:var(--muted);min-width:56px;text-align:center;}
.dv-hint{font-family:var(--font-mono);font-size:9px;letter-spacing:1px;color:var(--muted);text-align:center;text-transform:uppercase;}

/* ── AUTH MODAL ──────────────────────────────────────────────────────────── */
#auth-modal-overlay{position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,0.7);
  opacity:0;pointer-events:none;transition:opacity .2s;}
#auth-modal-overlay.open{opacity:1;pointer-events:auto;}
#auth-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.96);
  z-index:10001;background:var(--bg2);border:1px solid var(--border2);border-radius:4px;
  padding:32px 28px;width:340px;display:flex;flex-direction:column;gap:14px;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;}
#auth-modal.open{opacity:1;pointer-events:auto;transform:translate(-50%,-50%) scale(1);}
.auth-close{position:absolute;top:12px;right:12px;background:none;border:none;
  color:var(--muted);font-size:14px;cursor:pointer;padding:4px 6px;line-height:1;}
.auth-close:hover{color:var(--text);}
.auth-title{font-family:var(--font-mono);font-size:11px;letter-spacing:3px;color:var(--accent);}
.auth-input{background:rgba(255,255,255,0.04);border:1px solid var(--border2);border-radius:3px;
  color:var(--text);font-family:var(--font-body);font-size:13px;padding:10px 12px;outline:none;
  transition:border-color .15s;}
.auth-input:focus{border-color:rgba(var(--accent-rgb),0.5);}
.auth-msg{font-family:var(--font-body);font-size:12px;line-height:1.4;min-height:16px;}
.auth-error{color:#ff6b6b;}
.auth-info{color:rgba(var(--accent-rgb),0.8);}
.auth-submit-btn{background:rgba(var(--accent-rgb),0.12);border:1px solid rgba(var(--accent-rgb),0.4);
  color:var(--accent);font-family:var(--font-mono);font-size:10px;letter-spacing:2px;
  padding:11px;border-radius:3px;cursor:pointer;transition:all .15s;}
.auth-submit-btn:hover:not(:disabled){background:rgba(var(--accent-rgb),0.2);border-color:var(--accent);}
.auth-submit-btn:disabled{opacity:0.4;cursor:not-allowed;}
.auth-toggle-btn{background:none;border:none;color:var(--muted);font-family:var(--font-body);
  font-size:12px;cursor:pointer;padding:2px 0;text-align:left;}
.auth-toggle-btn:hover{color:var(--text);}
.auth-terms-row{display:flex;align-items:flex-start;gap:8px;cursor:pointer;font-family:var(--font-body);}
.auth-terms-row input{margin-top:3px;accent-color:var(--accent);flex-shrink:0;}
.auth-terms-row span{font-size:12px;color:var(--muted);line-height:1.5;}
.auth-terms-row a{color:var(--accent);text-decoration:none;}
.auth-terms-row a:hover{text-decoration:underline;}
.auth-otp-hint{font-family:var(--font-body);font-size:12px;color:var(--muted);line-height:1.4;margin:0;}
.auth-otp-input{text-align:center;font-family:var(--font-mono) !important;font-size:22px !important;
  letter-spacing:10px;padding:12px !important;}
#auth-step-email,#auth-step-otp{display:flex;flex-direction:column;gap:14px;}
.auth-submit-btn{min-height:44px;}
.auth-google-btn{display:flex;align-items:center;justify-content:center;gap:10px;
  background:#fff;border:1px solid #dadce0;border-radius:3px;color:#3c4043;
  font-family:var(--font-body);font-size:14px;font-weight:500;padding:11px;
  cursor:pointer;transition:background .15s;min-height:44px;}
.auth-google-btn:hover{background:#f8f9fa;}
.auth-divider{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:11px;font-family:var(--font-body);}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--border);}

/* ── VOCAB STATUS BUTTONS ────────────────────────────────────────────────── */
.vc-actions-row{display:flex;align-items:center;gap:10px;margin-top:14px;flex-wrap:wrap;}
.vc-action-btn{font-family:var(--font-mono);font-size:8px;letter-spacing:1.5px;padding:6px 12px;
  border:1px solid rgba(var(--accent-rgb),0.25);background:rgba(var(--accent-rgb),0.06);color:rgba(var(--accent-rgb),0.7);
  border-radius:2px;cursor:pointer;transition:all .15s;white-space:nowrap;}
.vc-action-btn:hover{background:rgba(var(--accent-rgb),0.12);color:var(--accent);}
.vc-status-btns{display:flex;gap:6px;margin-left:auto;}
.vc-status-btn{font-family:var(--font-mono);font-size:8px;letter-spacing:1px;padding:6px 10px;
  border-radius:2px;cursor:pointer;transition:all .15s;white-space:nowrap;
  background:var(--bg3);border:1px solid var(--border2);color:var(--muted);}
.vc-status-btn:hover{border-color:var(--accent);color:var(--text);}
.vc-status-btn:not(.vc-mastered-btn).active{background:rgba(245,158,11,0.15);border-color:rgba(245,158,11,0.5);color:#f59e0b;}
.vc-mastered-btn.active{background:rgba(34,197,94,0.15);border-color:rgba(34,197,94,0.5);color:#22c55e;}

/* ── VOCAB DOT STATUS COLORS ─────────────────────────────────────────────── */
.vocab-dot.dot-learning{background:rgba(245,158,11,0.55);}
.vocab-dot.dot-mastered{background:rgba(34,197,94,0.55);}
.vocab-dot.active.dot-learning{background:#f59e0b;box-shadow:0 0 6px rgba(245,158,11,0.6);}
.vocab-dot.active.dot-mastered{background:#22c55e;box-shadow:0 0 6px rgba(34,197,94,0.6);}
.vocab-dot.active{background:var(--accent);}

/* ── SETTINGS PANEL ─────────────────────────────────────────────────────────── */
#settings-overlay{position:fixed;inset:0;z-index:1005;background:rgba(0,0,0,0.55);
  opacity:0;pointer-events:none;transition:opacity .25s;backdrop-filter:blur(2px);}
#settings-overlay.open{opacity:1;pointer-events:auto;}
#settings-panel{position:fixed;top:0;right:0;bottom:0;width:320px;z-index:1010;
  background:var(--bg2);border-left:1px solid var(--border2);display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);}
#settings-panel::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,transparent,rgba(var(--accent-rgb),.6),transparent);pointer-events:none;}
#settings-panel.open{transform:translateX(0);}
.sp-header{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;
  border-bottom:1px solid var(--border);flex-shrink:0;}
.sp-title{font-family:var(--font-mono);font-size:9px;letter-spacing:3px;color:var(--accent);}
#sp-close{background:none;border:none;color:var(--muted);font-size:16px;cursor:pointer;
  padding:4px 6px;line-height:1;border-radius:4px;transition:color .15s,background .15s;}
#sp-close:hover{color:var(--text);background:rgba(255,255,255,.06);}
.sp-body{flex:1;overflow-y:auto;padding:0;}
.sp-body::-webkit-scrollbar{width:3px;}
.sp-body::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px;}
.sp-section{padding:18px 20px;border-bottom:1px solid var(--border);}
.sp-section:last-child{border-bottom:none;}
.sp-section-label{font-family:var(--font-mono);font-size:8px;letter-spacing:2.5px;
  color:rgba(var(--accent-rgb),.45);margin-bottom:14px;text-transform:uppercase;}
/* account profile row */
.sp-profile{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.sp-avatar{width:40px;height:40px;border-radius:50%;background:rgba(var(--accent-rgb),.12);
  border:1px solid rgba(var(--accent-rgb),.3);display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--accent);flex-shrink:0;
  overflow:hidden;cursor:pointer;}
.sp-profile-info{min-width:0;flex:1;}
.sp-fullname{font-family:var(--font-body);font-size:13px;font-weight:600;color:var(--text);
  line-height:1.3;margin:0;min-height:0;}
.sp-username{font-family:var(--font-mono);font-size:11px;color:var(--accent);
  line-height:1.3;margin:0 0 2px;}
.sp-email{font-family:var(--font-body);font-size:11px;color:var(--muted);word-break:break-all;
  line-height:1.3;margin:0;}
.sp-plan-row{display:flex;align-items:center;gap:8px;margin-top:5px;}
.sp-avatar-msg{font-size:10px;color:#f87171;min-height:0;margin-top:2px;text-align:center;max-width:56px;}
.sp-sub-error{margin-top:6px;padding:7px 10px;border-radius:6px;font-size:11px;color:rgba(255,160,80,0.9);background:rgba(255,120,40,0.1);border:1px solid rgba(255,120,40,0.25);}
.sp-sub-error button{margin-left:6px;background:none;border:none;color:rgba(255,160,80,0.9);text-decoration:underline;cursor:pointer;font-size:11px;padding:0;}
.sp-sub-details{margin:10px 0 4px;display:flex;flex-direction:column;gap:5px;}
.sp-sub-line{display:flex;justify-content:space-between;align-items:center;}
.sp-sub-key{font-family:var(--font-body);font-size:11px;color:var(--muted);}
.sp-sub-val{font-family:var(--font-mono);font-size:11px;color:var(--text);}
.sp-cancel-btn{margin-top:4px;background:none;border:none;color:rgba(255,255,255,0.25);
  font-family:var(--font-body);font-size:11px;cursor:pointer;padding:0;text-align:left;
  text-decoration:underline;text-underline-offset:3px;transition:color .15s;}
.sp-cancel-btn:hover{color:rgba(255,100,100,0.7);}
.sp-cancel-btn:disabled{opacity:0.4;cursor:not-allowed;}
.sp-upgrade-btn{background:rgba(245,158,11,0.08);border:1px solid rgba(245,158,11,0.35);color:#f59e0b;
  font-family:var(--font-mono);font-size:9px;letter-spacing:1.5px;padding:9px 14px;border-radius:8px;
  cursor:pointer;width:100%;margin-bottom:10px;transition:background .15s,border-color .15s;}
.sp-upgrade-btn:hover{background:rgba(245,158,11,0.15);border-color:rgba(245,158,11,0.6);}
.sp-upgrade-btn:disabled{opacity:0.5;cursor:not-allowed;}
.sp-danger-btn{background:rgba(255,80,80,0.07);border:1px solid rgba(255,80,80,0.22);color:#ff6060;
  font-family:var(--font-mono);font-size:8px;letter-spacing:2px;padding:8px 14px;border-radius:8px;
  cursor:pointer;transition:background .15s,border-color .15s;}
.sp-danger-btn:hover{background:rgba(255,80,80,0.14);border-color:rgba(255,80,80,0.5);}
.sp-login-btn{background:rgba(var(--accent-rgb),0.06);border:1px solid rgba(var(--accent-rgb),0.2);
  color:rgba(var(--accent-rgb),0.7);font-family:var(--font-body);font-size:12px;
  padding:9px 13px;border-radius:8px;cursor:pointer;text-align:left;
  transition:background .15s,color .15s,border-color .15s;}
.sp-login-btn:hover{background:rgba(var(--accent-rgb),0.11);color:var(--accent);border-color:rgba(var(--accent-rgb),.4);}
.sp-score-display{font-family:var(--font-mono);font-size:12px;letter-spacing:1px;color:var(--muted);cursor:default;}
.sp-score-display[data-score=”1”],.sp-score-display[data-score=”2”]{color:rgba(255,100,100,0.7);}
.sp-score-display[data-score=”3”]{color:rgba(245,158,11,0.85);}
.sp-score-display[data-score=”4”],.sp-score-display[data-score=”5”]{color:rgba(100,210,100,0.85);}
.sp-score-calc-btn{font-family:var(--font-mono);font-size:8px;letter-spacing:2px;padding:3px 8px;
  border-radius:6px;border:1px solid var(--accent);background:rgba(var(--accent-rgb),0.06);
  color:var(--accent);cursor:pointer;}
.sp-score-calc-btn:hover{background:rgba(var(--accent-rgb),0.14);}
.sp-tier-badge{font-family:var(--font-mono);font-size:8px;letter-spacing:2px;
  padding:3px 9px;border-radius:5px;border:1px solid;}
.sp-tier-badge[data-tier=”free”]{color:rgba(255,255,255,0.35);border-color:rgba(255,255,255,0.1);background:rgba(255,255,255,0.03);}
.sp-tier-badge[data-tier=”pro”]{color:#f59e0b;border-color:rgba(245,158,11,0.45);background:rgba(245,158,11,0.1);}
#sp-tier-refresh{background:none;border:none;color:var(--muted);cursor:pointer;font-size:13px;
  padding:2px 4px;line-height:1;border-radius:4px;transition:color .15s;}
#sp-tier-refresh:hover{color:var(--text);}
.sp-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px;}
.sp-row:last-child{margin-bottom:0;}
.sp-row-label{font-family:var(--font-body);font-size:12px;color:var(--muted);}
.sp-date-input{background:var(--bg3);border:1px solid var(--border2);border-radius:7px;
  color:var(--text);font-family:var(--font-mono);font-size:10px;padding:6px 10px;outline:none;}
.sp-date-input:focus{border-color:rgba(var(--accent-rgb),0.4);}
.sp-days-display{font-family:var(--font-mono);font-size:9px;color:var(--accent);letter-spacing:1px;
  margin-top:8px;margin-bottom:0;opacity:0.65;}
.sp-exam-table{display:flex;flex-direction:column;gap:4px;}
.sp-exam-row{display:flex;align-items:center;justify-content:space-between;padding:4px 6px;border-radius:6px;margin:0 -6px;}
.sp-exam-row--active{background:rgba(var(--accent-rgb),.07);}
.sp-exam-course{font-family:var(--font-body);font-size:11px;color:var(--muted);}
.sp-exam-row--active .sp-exam-course{color:var(--text);}
.sp-exam-input{width:118px;}
.sp-seg-group{display:flex;gap:2px;}
.sp-seg-btn{background:var(--bg3);border:1px solid var(--border);color:var(--muted);
  font-family:var(--font-mono);font-size:8px;letter-spacing:1px;padding:6px 10px;border-radius:6px;cursor:pointer;
  transition:color .15s,border-color .15s,background .15s;}
.sp-seg-btn:hover{color:var(--text);}
.sp-seg-btn.active{background:rgba(var(--accent-rgb),0.1);border-color:var(--accent);color:var(--accent);}
.sp-themes{display:flex;gap:6px;align-items:center;}
.sp-theme-btn{font-family:var(--font-mono);font-size:8px;letter-spacing:1.5px;
  padding:5px 10px;border-radius:6px;border:1px solid var(--border2);
  background:transparent;color:var(--muted);cursor:pointer;
  transition:border-color .15s,color .15s,background .15s;white-space:nowrap;}
.sp-theme-btn:hover{border-color:rgba(var(--accent-rgb),0.4);color:var(--text);}
.sp-theme-btn.active{border-color:var(--accent);color:var(--accent);background:rgba(var(--accent-rgb),0.06);}
.sp-theme-tag{font-size:6px;letter-spacing:1px;opacity:0.7;margin-left:3px;vertical-align:super;}
.sp-switch{position:relative;display:inline-block;width:38px;height:22px;flex-shrink:0;}
.sp-switch input{opacity:0;width:0;height:0;}
.sp-switch-track{position:absolute;inset:0;background:var(--bg3);border-radius:22px;
  border:1px solid var(--border2);cursor:pointer;transition:background .2s;}
.sp-switch-track::after{content:'';position:absolute;width:14px;height:14px;left:3px;top:3px;
  background:var(--muted);border-radius:50%;transition:transform .2s,background .2s;}
.sp-switch input:checked + .sp-switch-track{background:rgba(var(--accent-rgb),0.15);border-color:var(--accent);}
.sp-switch input:checked + .sp-switch-track::after{transform:translateX(16px);background:var(--accent);}
.sp-vocab-text{font-family:var(--font-body);font-size:11px;color:var(--muted);margin-bottom:10px;}
.sp-vocab-bar{display:flex;height:5px;border-radius:3px;overflow:hidden;background:var(--bg3);}
.sp-bar-seg{height:100%;transition:width .3s;}
.sp-mastered{background:#22c55e;}
.sp-learning{background:#f59e0b;}
.sp-unseen{background:rgba(255,255,255,0.07);}
.sp-about-info{font-family:var(--font-body);font-size:11px;color:var(--muted);line-height:1.75;}
.sp-social-row{display:flex;gap:10px;margin-bottom:10px;}
.sp-social-icon{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,0.06);color:var(--muted);text-decoration:none;transition:background .15s,color .15s;}
.sp-social-icon:hover{background:rgba(var(--accent-rgb),.15);color:var(--accent);}
.sp-social-placeholder{opacity:.45;}
.sp-social-placeholder:hover{opacity:.7;}
.sp-about-links{display:flex;gap:12px;}
.sp-about-links a{color:var(--muted);text-decoration:none;font-size:11px;font-family:var(--font-body);transition:color .15s;}
.sp-about-links a:hover{color:var(--accent);}

/* ── AUTH button without dropdown ────────────────────────────────────────── */
#auth-menu{display:none;} /* legacy — replaced by settings panel */

.view{position:fixed;top:var(--header);left:0;right:0;bottom:0;z-index:2;display:none;}
.view.active-view{display:block;animation:view-fade-in 0.18s ease-out;}
@keyframes view-fade-in{from{opacity:0;transform:translateY(3px)}to{opacity:1;transform:translateY(0)}}

/* ── EXPLORE ─────────────────────────────────────────────────────────────── */
#workspace{position:absolute;inset:0;overflow:hidden;cursor:grab;touch-action:none;}
#workspace.grabbing{cursor:grabbing;}
#conn-canvas{position:absolute;top:0;left:0;pointer-events:none;}
#bubble-layer{position:absolute;top:0;left:0;transform-origin:0 0;}

.unit-bubble{
  position:absolute;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;cursor:pointer;user-select:none;
  border:1.5px solid rgba(255,255,255,0.14);
  box-shadow:0 6px 20px rgba(0,0,0,0.25),inset 0 1px 0 rgba(255,255,255,0.06);
  transition:box-shadow .2s ease,border-color .2s ease,transform .2s cubic-bezier(.34,1.56,.64,1);
  touch-action:none;
}
.unit-bubble:hover{border-color:rgba(255,255,255,0.35);transform:scale(1.035);box-shadow:0 8px 26px rgba(0,0,0,0.3),inset 0 1px 0 rgba(255,255,255,0.08);}
.unit-bubble.active-unit{border-color:rgba(var(--accent-rgb),0.65);box-shadow:0 0 0 3px rgba(var(--accent-rgb),0.14),0 8px 24px rgba(0,0,0,0.3);}
/* mastery progress ring — thin conic-gradient arc drawn just outside the bubble */
.unit-bubble.has-mastery::before{
  content:'';
  position:absolute;inset:-7px;border-radius:50%;
  background:conic-gradient(rgba(var(--accent-rgb),0.9) var(--mastery-deg,0deg),rgba(255,255,255,0.1) var(--mastery-deg,0deg) 360deg);
  -webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 3px),#000 calc(100% - 3px));
  mask:radial-gradient(farthest-side,transparent calc(100% - 3px),#000 calc(100% - 3px));
  pointer-events:none;
}
.u-num{font-family:var(--font-mono);font-size:8px;opacity:.55;letter-spacing:2px;margin-bottom:1px;}
.u-name{font-family:var(--font-display);font-size:10px;font-weight:700;line-height:1.2;padding:0 6px;color:#fff;max-width:92px;overflow-wrap:break-word;}
.u-period{font-family:var(--font-mono);font-size:7px;opacity:.4;margin-top:2px;}

.sub-bubble{
  position:absolute;border-radius:50%;display:flex;align-items:center;justify-content:center;
  text-align:center;cursor:pointer;user-select:none;
  font-family:var(--font-body);font-size:9px;font-weight:500;line-height:1.2;padding:5px;color:#fff;
  border:1px solid rgba(255,255,255,0.16);
  box-shadow:0 3px 12px rgba(0,0,0,0.2);
  transition:box-shadow .2s ease,border-color .2s ease,transform .2s cubic-bezier(.34,1.56,.64,1);
  touch-action:none;
}
.sub-bubble:hover{border-color:rgba(255,255,255,0.4);transform:scale(1.06);}

/* ── GRAPH NODE VISIBILITY (zoom-driven hierarchy) ───────────────────────── */
.graph-node{transition:opacity .28s ease,transform .3s cubic-bezier(.34,1.56,.64,1);}
.node-hidden{opacity:0!important;transform:scale(0.65)!important;pointer-events:none!important;}
.node-visible{opacity:1;transform:scale(1);}

/* selecting a node dims unrelated siblings but never blocks clicks — stays fully navigable */
.node-dimmed{opacity:0.32!important;}
.node-selected{
  border-color:var(--accent)!important;
  box-shadow:0 0 0 3px rgba(var(--accent-rgb),0.28),0 0 24px rgba(var(--accent-rgb),0.35)!important;
  transform:scale(1.08)!important;
}

/* ── SUB-SUB (level-3) NODES ─────────────────────────────────────────────── */
.subsub-node{
  position:absolute;white-space:nowrap;
  font-family:var(--font-mono);font-size:8px;letter-spacing:.8px;
  padding:4px 9px;border-radius:20px;border:1px solid;
  background:rgba(8,12,16,0.94);cursor:pointer;user-select:none;
  transition:opacity .15s ease,transform .15s cubic-bezier(.34,1.56,.64,1);
}
.subsub-node:hover{opacity:0.78;transform:scale(1.08);}

/* ── SPICE-T FILTER BUTTONS ──────────────────────────────────────────────── */
.sf-btn{
  width:26px;height:26px;border-radius:50%;border:2px solid;
  font-family:var(--font-mono);font-size:9px;font-weight:700;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:opacity .15s,transform .15s;
  position:relative;
}
.sf-btn:hover{transform:scale(1.15);}
.sf-btn.sf-off{opacity:0.22;}
.sf-btn::after{
  content:attr(data-label);
  position:absolute;left:calc(100% + 14px);top:50%;
  transform:translateY(-50%) translateX(-6px);
  background:rgba(8,12,16,0.96);border:1px solid var(--border2);border-radius:3px;
  color:currentColor;font-family:var(--font-mono);font-size:8px;letter-spacing:1px;
  padding:3px 8px;white-space:nowrap;pointer-events:none;
  opacity:0;transition:opacity .15s,transform .15s;z-index:200;
}
.sf-btn:hover::after{opacity:1;transform:translateY(-50%) translateX(0);}

/* TOOLBAR */
#toolbar{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  background:rgba(8,12,16,0.92);border:1px solid var(--border2);border-radius:14px;
  padding:12px 7px;display:flex;flex-direction:column;align-items:center;gap:5px;
  z-index:50;backdrop-filter:blur(10px);box-shadow:0 10px 30px rgba(0,0,0,0.3);
}
.tool-label{font-family:var(--font-mono);font-size:7px;letter-spacing:1.5px;color:var(--muted);margin:2px 0;}
.tool-btn{
  width:30px;height:30px;border:1px solid var(--border2);background:transparent;
  color:var(--muted);border-radius:9px;cursor:pointer;font-size:14px;
  display:flex;align-items:center;justify-content:center;transition:all .15s;font-family:var(--font-mono);
}
.tool-btn:hover{color:var(--text);border-color:rgba(255,255,255,0.3);background:rgba(255,255,255,0.05);transform:scale(1.06);}
.tool-btn.active{color:var(--accent);border-color:var(--accent);background:rgba(var(--accent-rgb),0.1);box-shadow:0 0 0 3px rgba(var(--accent-rgb),0.12);}
.tool-btn[data-label]{position:relative;}
.tool-btn[data-label]::after{
  content:attr(data-label);
  position:absolute;left:calc(100% + 10px);top:50%;
  transform:translateY(-50%) translateX(-4px);
  background:rgba(8,12,16,0.96);border:1px solid var(--border2);border-radius:3px;
  color:var(--text);font-family:var(--font-mono);font-size:8px;letter-spacing:1px;
  padding:3px 8px;white-space:nowrap;pointer-events:none;
  opacity:0;transition:opacity .15s,transform .15s;z-index:200;
}
@media(hover:hover){
  .tool-btn[data-label]:hover::after{opacity:1;transform:translateY(-50%) translateX(0);}
}
.tool-divider{width:20px;height:1px;background:var(--border);margin:3px 0;}
/* zoom level picker */
#zoom-level-lbl{cursor:pointer;user-select:none;position:relative;}
#zoom-level-lbl:hover{color:var(--text);}
#zoom-level-lbl.locked{color:var(--accent);border:1px solid var(--accent);border-radius:3px;padding:1px 4px;background:rgba(var(--accent-rgb),0.08);}
.zoom-picker{
  position:absolute;left:calc(100% + 12px);top:50%;
  transform:translateY(-50%) translateX(-6px);
  background:rgba(8,12,16,0.96);border:1px solid var(--border2);border-radius:4px;
  display:flex;flex-direction:row;gap:3px;padding:4px;
  opacity:0;pointer-events:none;transition:opacity .15s,transform .15s;z-index:200;
}
.zoom-picker.open{opacity:1;pointer-events:auto;transform:translateY(-50%) translateX(0);}
.zoom-picker-btn{
  font-family:var(--font-mono);font-size:8px;letter-spacing:1px;
  color:var(--muted);background:transparent;border:1px solid var(--border2);
  border-radius:2px;padding:3px 7px;cursor:pointer;transition:all .12s;
}
.zoom-picker-btn:hover{color:var(--text);border-color:rgba(255,255,255,0.3);}
.zoom-picker-btn.active{color:var(--accent);border-color:var(--accent);background:rgba(var(--accent-rgb),0.08);}

/* ONBOARDING TOUR */
#explore-tour-card{
  position:absolute;left:50%;bottom:28px;transform:translateX(-50%);
  background:rgba(8,12,16,0.96);border:1px solid rgba(var(--accent-rgb),0.35);
  border-radius:14px;padding:16px 20px;width:300px;max-width:calc(100vw - 40px);
  box-shadow:0 12px 34px rgba(0,0,0,0.4);backdrop-filter:blur(10px);
  z-index:80;animation:tourCardIn .25s cubic-bezier(.34,1.56,.64,1);
}
@keyframes tourCardIn{from{opacity:0;transform:translateX(-50%) translateY(10px);}to{opacity:1;transform:translateX(-50%) translateY(0);}}
.tour-step-lbl{font-family:var(--font-mono);font-size:8px;letter-spacing:2px;color:var(--accent);margin-bottom:6px;}
.tour-text{font-family:var(--font-body);font-size:13px;line-height:1.5;color:var(--text);margin-bottom:14px;}
.tour-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;}
.tour-skip{
  background:none;border:none;color:var(--muted);font-family:var(--font-mono);
  font-size:9px;letter-spacing:1px;cursor:pointer;padding:6px 0;
}
.tour-skip:hover{color:var(--text);}
.tour-next{
  background:var(--accent);color:#08110f;border:none;border-radius:8px;
  font-family:var(--font-mono);font-weight:700;font-size:9px;letter-spacing:1px;
  padding:8px 16px;cursor:pointer;transition:transform .12s,opacity .12s;
}
.tour-next:hover{transform:scale(1.04);opacity:.92;}
@keyframes tourPulse{
  0%{box-shadow:0 0 0 0 rgba(var(--accent-rgb),0.55);}
  70%{box-shadow:0 0 0 14px rgba(var(--accent-rgb),0);}
  100%{box-shadow:0 0 0 0 rgba(var(--accent-rgb),0);}
}
.tour-pulse{animation:tourPulse 1.6s ease-out infinite;}
#workspace.tour-pulse,#toolbar.tour-pulse{outline:2px solid rgba(var(--accent-rgb),0.4);outline-offset:-2px;border-radius:inherit;}
.spicet-dot{
  width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:8px;font-weight:700;cursor:default;
  border:1px solid transparent;transition:transform .15s;
}
.spicet-dot:hover{transform:scale(1.1);}

/* INFO PANEL */
#info-panel{
  position:absolute;right:0;top:0;bottom:0;width:300px;
  background:rgba(8,12,16,0.96);border-left:1px solid var(--border2);
  display:flex;flex-direction:column;z-index:50;overflow:hidden;backdrop-filter:blur(12px);
}
#info-empty{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:10px;padding:32px;text-align:center;
}
.empty-glyph{font-size:32px;color:var(--hint);}
#info-empty p{font-family:var(--font-mono);font-size:10px;color:var(--muted);letter-spacing:.5px;line-height:1.6;}
.empty-sub{color:var(--hint)!important;font-size:9px!important;}
#info-content{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:10px;}
#info-content::-webkit-scrollbar{width:3px;}
#info-content::-webkit-scrollbar-thumb{background:var(--border2);}
#info-close{
  align-self:flex-end;background:none;border:1px solid var(--border2);color:var(--muted);
  cursor:pointer;width:24px;height:24px;border-radius:2px;font-size:10px;flex-shrink:0;transition:all .15s;
}
#info-close:hover{color:var(--text);}
#info-tag{font-family:var(--font-mono);font-size:8px;letter-spacing:2px;}
#info-title{font-family:var(--font-display);font-size:17px;font-weight:800;line-height:1.2;}
#info-period{font-family:var(--font-mono);font-size:9px;color:var(--muted);}
#info-desc{font-size:12px;line-height:1.7;color:#b0ada6;}
#info-spicet-tags,#info-kw-tags{display:flex;flex-wrap:wrap;gap:4px;}
.spicet-tag{font-family:var(--font-mono);font-size:8px;padding:3px 7px;border-radius:2px;letter-spacing:.5px;font-weight:700;}
.kw-tag{font-family:var(--font-mono);font-size:8px;color:var(--muted);border:1px solid var(--border);padding:2px 6px;border-radius:2px;}
.info-sec-label{font-family:var(--font-mono);font-size:8px;letter-spacing:2px;color:var(--muted);margin-bottom:6px;}
.conn-item{
  font-size:11px;color:#b0ada6;padding:7px 10px;border-radius:3px;
  border-left:2px solid;margin-bottom:4px;background:rgba(255,255,255,0.02);line-height:1.4;
}
#tl-info-panel::-webkit-scrollbar { width: 3px; }
#tl-info-panel::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.13); }
.conn-item .conn-theme{font-family:var(--font-mono);font-size:8px;font-weight:700;display:block;margin-bottom:2px;}

/* CONNECT BAR */
#connect-bar{
  position:absolute;bottom:16px;left:50%;transform:translateX(-50%);
  background:rgba(8,12,16,0.96);border:1px solid rgba(124,58,237,0.4);
  border-radius:6px;padding:10px 14px;z-index:60;backdrop-filter:blur(8px);
  display:flex;align-items:center;gap:12px;min-width:500px;max-width:90vw;flex-wrap:wrap;
}
#connect-bar.hidden{opacity:0;pointer-events:none;}
.cbar-label{font-family:var(--font-mono);font-size:8px;letter-spacing:2px;color:var(--accent2);flex-shrink:0;}
.cbar-left{display:flex;align-items:center;gap:8px;flex:1;flex-wrap:wrap;}
#cbar-selected{display:flex;gap:5px;flex-wrap:wrap;}
.cbar-chip{font-family:var(--font-mono);font-size:9px;background:rgba(124,58,237,0.15);border:1px solid rgba(124,58,237,0.4);color:#c4b5fd;padding:3px 8px;border-radius:2px;}
.cbar-right{display:flex;align-items:center;gap:6px;flex-shrink:0;}
#cbar-theme{font-family:var(--font-mono);font-size:9px;background:var(--bg2);border:1px solid var(--border2);color:var(--text);padding:5px 8px;border-radius:2px;cursor:pointer;}
#cbar-do,#cbar-cancel{font-family:var(--font-mono);font-size:9px;letter-spacing:1px;padding:6px 12px;border-radius:2px;cursor:pointer;transition:all .15s;border:1px solid;}
#cbar-do{background:rgba(124,58,237,0.2);border-color:rgba(124,58,237,0.6);color:#c4b5fd;}
#cbar-do:not(:disabled):hover{background:rgba(124,58,237,0.4);}
#cbar-do:disabled{opacity:.35;cursor:default;}
#cbar-cancel{background:transparent;border-color:var(--border2);color:var(--muted);}
#cbar-cancel:hover{color:var(--text);}

/* ── TIMELINE ────────────────────────────────────────────────────────────── */
#tl-header{
  position:absolute;top:0;left:0;right:0;height:44px;
  background:rgba(8,12,16,0.95);border-bottom:1px solid var(--border);
  display:flex;align-items:center;padding:0 20px;gap:8px;z-index:10;
  backdrop-filter:blur(8px);overflow-x:auto;
}
#tl-filters{display:flex;gap:5px;flex-shrink:0;}
.tl-filter-btn{
  font-family:var(--font-mono);font-size:8px;letter-spacing:1px;
  border:1px solid var(--border2);background:transparent;color:var(--muted);
  padding:4px 9px;border-radius:2px;cursor:pointer;transition:all .15s;white-space:nowrap;
}
.tl-filter-btn:hover{color:var(--text);}
.tl-filter-btn.active{color:#fff;}
#tl-scroll{
  position:absolute;top:44px;left:0;right:0;bottom:0;
  overflow-x:auto;overflow-y:auto;
  user-select:none;-webkit-user-select:none;
}
#tl-track-inner{
  position:relative;min-height:300px;
}
@keyframes tlFadeIn{
  from{opacity:0;transform:translateY(7px);}
  to{opacity:1;transform:translateY(0);}
}
.tl-event-wrap{animation-fill-mode:forwards;}

/* ── TIMELINE YEAR TICK LABELS ───────────────────────────────────────────── */
.tl-tick-label {
  position:absolute;
  transform:translateX(-50%);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  color:rgba(255,255,255,0.55);
  letter-spacing:1px;
  pointer-events:none;
  top:10px;
}
.tl-tick-label.major {
  font-size:13px;
  color:rgba(255,255,255,0.75);
}

/* ── MAP ─────────────────────────────────────────────────────────────────── */
#map-container{
  position:absolute;inset:0;overflow:hidden;
  background:#080c10;
}
#map-controls{
  position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:12px;
  background:rgba(8,12,16,0.92);border:1px solid var(--border2);
  border-radius:6px;padding:10px 16px;z-index:50;backdrop-filter:blur(8px);
  white-space:nowrap;
}
#map-year-slider{
  -webkit-appearance:none;width:320px;height:2px;
  background:var(--border2);border-radius:2px;outline:none;cursor:pointer;
}
#map-year-slider::-webkit-slider-thumb{
  -webkit-appearance:none;width:14px;height:14px;border-radius:50%;
  background:var(--accent);cursor:pointer;border:2px solid rgba(var(--accent-rgb),0.4);
}
#map-year-display{
  font-family:var(--font-mono);font-size:14px;font-weight:700;
  color:var(--accent);min-width:48px;text-align:center;
}
#map-era-strip { pointer-events:none; }
#map-layer-toggles { display:none; }
#map-layers-popup { min-width:160px; }
#map-container { outline:none; cursor:grab; }
#map-container:active { cursor:grabbing; }
#map-info-panel{
  position:absolute;right:0;top:0;bottom:0;width:280px;
  background:rgba(8,12,16,0.96);border-left:1px solid var(--border2);
  padding:20px;overflow-y:auto;z-index:50;
  display:none;flex-direction:column;gap:10px;backdrop-filter:blur(12px);
}
#map-info-panel.visible{display:flex;}
#map-info-panel::-webkit-scrollbar{width:3px;}
#map-info-panel::-webkit-scrollbar-thumb{background:var(--border2);}

/* SCROLLBARS */
::-webkit-scrollbar{width:3px;height:3px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px;}

/* UNIT COLORS */
.uc1{background:rgba(124,58,237,.18);}  .uc2{background:rgba(8,145,178,.18);}
.uc3{background:rgba(180,83,9,.18);}    .uc4{background:rgba(15,118,110,.18);}
.uc5{background:rgba(190,24,93,.18);}   .uc6{background:rgba(6,95,70,.18);}
.uc7{background:rgba(146,64,14,.18);}   .uc8{background:rgba(29,78,216,.18);}
.uc9{background:rgba(79,70,229,.18);}
.sb1{background:rgba(124,58,237,.22);}  .sb2{background:rgba(8,145,178,.22);}
.sb3{background:rgba(180,83,9,.22);}    .sb4{background:rgba(15,118,110,.22);}
.sb5{background:rgba(190,24,93,.22);}   .sb6{background:rgba(6,95,70,.22);}
.sb7{background:rgba(146,64,14,.22);}   .sb8{background:rgba(29,78,216,.22);}
.sb9{background:rgba(79,70,229,.22);}

/* ── HAMBURGER BUTTON ─────────────────────────────────────────────────────── */
#nav-hamburger{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:5px;width:36px;height:36px;background:none;border:1px solid var(--border2);
  border-radius:3px;cursor:pointer;padding:0;flex-shrink:0;margin-left:8px;order:10;
}
#nav-hamburger span{
  display:block;width:16px;height:1.5px;background:var(--muted);border-radius:1px;
  transition:all .2s;
}
header.nav-open nav{
  display:flex;flex-direction:column;gap:2px;
  position:fixed;top:var(--header);right:20px;
  background:rgba(8,12,16,0.98);border:1px solid var(--border2);
  border-radius:3px;padding:8px;z-index:199;backdrop-filter:blur(12px);
  min-width:200px;box-shadow:0 8px 24px rgba(0,0,0,0.5);
}

/* ── BOTTOM NAV ───────────────────────────────────────────────────────────── */
#bottom-nav{
  display:none;position:fixed;bottom:0;left:0;right:0;z-index:200;
  height:58px;background:rgba(8,12,16,0.97);border-top:1px solid var(--border2);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  flex-direction:row;align-items:stretch;
}
.bn-btn{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;border:none!important;border-radius:0!important;
  padding:6px 0!important;color:var(--muted)!important;background:none!important;
}
.bn-btn.active{color:var(--accent)!important;background:rgba(var(--accent-rgb),0.06)!important;}
.bn-btn:hover{color:var(--text)!important;background:rgba(255,255,255,0.03)!important;}
.bn-icon{font-size:17px;line-height:1;}
.bn-label{font-family:var(--font-mono);font-size:7px;letter-spacing:1px;}

/* ── MOBILE / TABLET (≤768px) ────────────────────────────────────────────── */
@media(max-width:768px){
  .exam-counter{display:none;}
  .logo-main,.logo-sub{display:none;}
  header.nav-open nav{right:0;left:0;border-radius:0;min-width:unset;border-bottom:1px solid var(--border2);}
  .nav-btn{padding:12px 16px;font-size:10px;min-height:44px;}
  #mobile-auth-btn{display:flex !important;}
  #auth-btn-wrap{margin-left:0;}
  /* Bottom nav: show on mobile, hide hamburger */
  #bottom-nav{display:flex;}
  #nav-hamburger{display:none;}
  /* Views sit above bottom nav */
  .view{bottom:58px;}
  /* Settings panel clears bottom nav */
  #settings-panel{padding-bottom:58px;}
  #settings-panel{width:100vw;}
  #connect-bar{min-width:unset;width:calc(100vw - 24px);flex-wrap:wrap;}
  .tool-btn{width:36px;height:36px;}
  .sf-btn{width:36px;height:36px;}
  #map-controls{
    flex-wrap:wrap;left:8px;right:8px;bottom:10px;
    transform:none;white-space:normal;justify-content:center;gap:6px 8px;padding:8px 12px;
  }
  #map-year-slider{width:clamp(120px,calc(100vw - 280px),320px);}
  /* search: hide full bar, show icon button only */
  #search-wrapper{display:none !important;}
  #search-wrapper.mobile-open{
    display:flex !important;position:fixed !important;
    top:0 !important;left:0 !important;right:0 !important;
    z-index:300 !important;height:var(--header) !important;
    background:rgba(8,12,16,0.98) !important;
    backdrop-filter:blur(12px) !important;
    padding:0 12px !important;margin:0 !important;
    max-width:none !important;flex:none !important;
  }
  #search-mobile-btn{display:flex !important;}
}

/* ── SMALL MOBILE (≤600px) ──────────────────────────────────────────────── */
@media(max-width:600px){
  #auth-modal{width:calc(100vw - 32px);padding:24px 20px;}
  .auth-input{font-size:16px;}
  .auth-otp-input{font-size:24px !important;letter-spacing:8px;}
  .sp-date-input{font-size:16px;}
  #detail-drawer{width:100vw;}
  .view{right:0!important;}
  .sp-section{padding:14px 16px;}
}

/* ── PORTRAIT LOCK NOTICE ─────────────────────────────────────────────────── */
#rotate-notice{
  display:none;position:fixed;inset:0;z-index:9999;
  background:rgba(8,12,16,0.97);
  align-items:center;justify-content:center;flex-direction:column;gap:16px;
  font-family:'Space Mono',monospace;font-size:11px;letter-spacing:2px;
  color:rgba(var(--accent-rgb),0.6);text-align:center;padding:32px;
}
#rotate-notice .rn-icon{font-size:40px;display:block;margin-bottom:8px;}

/* ── LANDING OVERLAY ─────────────────────────────────────────────────────── */
#landing {
  position: fixed; inset: 0; z-index: 999;
  display: flex; align-items: center; justify-content: center;
  background: rgba(8, 12, 16, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: opacity 0.55s ease;
  overflow-y: auto;
  padding: 24px 16px;
}
#landing.fade-out { opacity: 0; pointer-events: none; }
#landing.gone { display: none; }
#landing-inner {
  display: flex; flex-direction: column; align-items: center;
  gap: 28px; max-width: 680px; width: 100%; text-align: center;
}
.landing-logo { display: flex; align-items: center; gap: 14px; }
.landing-tag {
  font-family: var(--font-mono); font-size: 14px; font-weight: 700;
  background: var(--accent); color: #000;
  padding: 4px 9px; border-radius: 2px; letter-spacing: 1px; flex-shrink: 0;
}
.landing-wordmark { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; }
.landing-title {
  font-family: var(--font-display); font-size: 26px; font-weight: 800;
  letter-spacing: 3px; color: var(--text); line-height: 1;
}
.landing-edition {
  font-family: var(--font-mono); font-size: 9px; color: var(--muted); letter-spacing: 2.5px;
}
.landing-tagline {
  font-family: var(--font-body); font-size: 14px; color: var(--muted);
  max-width: 440px; line-height: 1.6;
}
.landing-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px; width: 100%;
}
.lf-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border2);
  border-radius: 4px; padding: 16px 10px;
  transition: border-color 0.15s, background 0.15s;
}
.lf-card:hover {
  border-color: rgba(var(--accent-rgb),0.3);
  background: rgba(var(--accent-rgb),0.04);
}
.lf-icon { font-size: 20px; color: var(--accent); line-height: 1; }
.lf-name { font-family: var(--font-mono); font-size: 9px; letter-spacing: 2px; color: var(--text); }
.lf-desc { font-family: var(--font-body); font-size: 10px; color: var(--muted); line-height: 1.4; }
.landing-enter-btn {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 3px;
  background: rgba(var(--accent-rgb),0.12);
  border: 1px solid rgba(var(--accent-rgb),0.5);
  color: var(--accent); padding: 14px 36px;
  border-radius: 3px; cursor: pointer;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.landing-enter-btn:hover, .landing-enter-btn:focus-visible {
  background: rgba(var(--accent-rgb),0.22);
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(var(--accent-rgb),0.18);
  outline: none;
}
.landing-enter-arrow { font-size: 16px; transition: transform 0.2s; }
.landing-enter-btn:hover .landing-enter-arrow { transform: translateX(4px); }
.landing-skip-label {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-body); font-size: 11px; color: var(--muted); cursor: pointer;
}
.landing-skip-label input { accent-color: var(--accent); cursor: pointer; }
@media (max-width: 600px) {
  .landing-title { font-size: 18px; letter-spacing: 2px; }
  .landing-features { grid-template-columns: repeat(2, 1fr); }
  .lf-card { padding: 12px 8px; }
  .landing-enter-btn { padding: 13px 24px; font-size: 10px; }
  #landing-inner { gap: 20px; }
}
@media(orientation:landscape)and(max-width:900px){
  #rotate-notice{display:flex;}
}


/* ── Background: warm paper + subtle grain texture ─── */
  background-color: transparent;
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  opacity: 0.055;
}

/* ── Header & chrome ─── */

/* ── Explore: toolbar, info panel, connect bar ─── */

/* ── Map ─── */

/* ── Timeline ─── */
.tl-card { background:rgba(8,12,16,0.93); }
#tl-tip { background:rgba(8,12,16,0.97); border:1px solid rgba(255,255,255,0.13); border-radius:4px; padding:10px 14px; max-width:240px; pointer-events:none; opacity:0; transition:opacity .15s; }

/* ── Detail drawer ─── */

/* ── Notes & vocab & practice sidebars ─── */

/* ── Notes content ─── */

/* ── Vocab cards ─── */

/* ── Practice / questions (!important beats injected <style> on equal specificity) ─── */

/* ── Settings panel tweaks ─── */

/* ── COURSE SELECTOR ─────────────────────────────────────────────────────── */
#course-select{position:fixed;inset:0;z-index:1000;
  background:linear-gradient(to bottom,transparent 0%,transparent 45%,var(--bg) 72%);
  display:flex;align-items:flex-start;justify-content:center;
  overflow-y:auto;-webkit-overflow-scrolling:touch;transition:opacity .3s;}
@keyframes cs-in{
  from{opacity:0;transform:translateY(18px);}
  to{opacity:1;transform:translateY(0);}
}
.cs-skip #course-select{display:none;}
/* While the course selector is the active screen, hide the app shell chrome so
   nothing bleeds through the selector's transparent gradient top. */
html.cs-selecting header,html.cs-selecting #bottom-nav,html.cs-selecting .view{display:none!important;}
#course-select.cs-overlay{background:var(--bg);}
#course-select.cs-exit{opacity:0;pointer-events:none;}
html:not(.cs-skip) #scan-line{display:none;}
.cs-inner{display:flex;flex-direction:column;align-items:center;gap:0;
  padding:0 0 60px;max-width:880px;width:100%;}

/* ── CS TOP NAV ── */
.cs-load-err{position:absolute;top:52px;left:50%;transform:translateX(-50%);z-index:30;padding:8px 18px;border-radius:8px;font-size:12px;color:rgba(255,160,80,0.95);background:rgba(30,15,5,0.92);border:1px solid rgba(255,120,40,0.4);pointer-events:none;white-space:nowrap;}
#cs-topnav{position:absolute;top:0;left:0;right:0;z-index:20;display:flex;align-items:center;
  justify-content:space-between;padding:16px 24px;pointer-events:none;}
#cs-topnav .cs-topnav-logo{font-family:var(--font-display);font-size:16px;font-weight:800;
  letter-spacing:1.5px;pointer-events:none;}
#cs-topnav .cs-logo-ap{font-size:16px;}
#cs-topnav .cs-logo-graphs{font-size:16px;}
.cs-topnav-btn{pointer-events:auto;font-family:var(--font-mono);font-size:10px;letter-spacing:1.5px;
  text-transform:uppercase;border:1px solid rgba(var(--accent-rgb),.4);background:rgba(0,0,0,.35);
  color:var(--accent);padding:0 14px;height:30px;border-radius:6px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;gap:5px;box-sizing:border-box;
  transition:background .15s,border-color .15s;backdrop-filter:blur(4px);}
.cs-topnav-btn:hover{background:rgba(var(--accent-rgb),.1);border-color:rgba(var(--accent-rgb),.7);}
.cs-topnav-btn.signed-in{color:var(--text);border-color:rgba(var(--accent-rgb),.25);
  background:rgba(var(--accent-rgb),.06);}
#cs-auth-area{pointer-events:auto;display:flex;align-items:center;gap:10px;margin-left:auto;}
.cs-topnav-btn.cs-upgrade{color:#f59e0b;border-color:rgba(245,158,11,.5);
  background:rgba(245,158,11,.12);}
.cs-topnav-btn.cs-upgrade:hover{background:rgba(245,158,11,.24);border-color:rgba(245,158,11,.8);}
.cs-topnav-btn.lv-chip{padding:0 14px;font-size:10px;}
.cs-topnav-btn.icon-only{padding:0;width:30px;}
.cs-theme-toggle{padding:8px;width:32px;height:32px;display:flex;align-items:center;justify-content:center;position:relative;}
.cs-topnav-btn.cs-theme-toggle{padding:0;width:30px;height:30px;background:rgba(var(--accent-rgb),.06);}
.cs-theme-icon{position:absolute;transition:opacity .35s ease,transform .35s ease;}
.cs-theme-icon-sun{opacity:0;transform:rotate(-90deg) scale(.6);}
.cs-theme-icon-moon{opacity:1;transform:rotate(0deg) scale(1);}
[data-theme="light"] .cs-theme-icon-sun{opacity:1;transform:rotate(0deg) scale(1);}
[data-theme="light"] .cs-theme-icon-moon{opacity:0;transform:rotate(90deg) scale(.6);}

/* Theme switch cover: a single opacity-only overlay that hides the instant swap
   underneath (see withThemeTransition in supabase-client.js). Deliberately NOT a
   per-element or full-page-snapshot transition — those get expensive/janky on
   pages with lots of DOM (the course grid) since the browser has to rasterize
   everything; a flat overlay's opacity is compositor-only and always cheap. */
#theme-fade-overlay{position:fixed;inset:0;z-index:99999;background:var(--bg);
  opacity:0;pointer-events:none;transition:opacity .16s ease;}
#theme-fade-overlay.show{opacity:1;}

/* ── HERO ── */
.cs-hero{display:flex;flex-direction:column;align-items:center;
  justify-content:center;text-align:center;gap:20px;width:100%;padding:80px 24px 32px;
  position:relative;overflow:hidden;background:radial-gradient(ellipse 70% 50% at 50% 55%,rgba(var(--accent-rgb),.04) 0%,transparent 70%);}
#lattice-canvas{position:absolute;top:0;left:0;right:0;height:55vh;z-index:0;pointer-events:none;
  -webkit-mask-image:linear-gradient(to bottom,black 40%,transparent 75%);
  mask-image:linear-gradient(to bottom,black 40%,transparent 75%);}
.cs-hero .cs-brand{margin-bottom:8px;animation:cs-in .55s cubic-bezier(.22,1,.36,1) both;}
.cs-hero-title{font-family:var(--font-display);font-size:clamp(52px,9vw,96px);
  font-weight:800;letter-spacing:-2px;color:var(--text);line-height:1;margin:0;
  animation:cs-in .65s cubic-bezier(.22,1,.36,1) both;animation-delay:.1s;}
.cs-hero-sub{font-family:var(--font-body);font-size:clamp(14px,2vw,17px);color:var(--muted);
  max-width:460px;line-height:1.65;margin:0;
  animation:cs-in .55s cubic-bezier(.22,1,.36,1) both;animation-delay:.24s;}
.cs-hero-feats{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:4px;
  animation:cs-in .55s cubic-bezier(.22,1,.36,1) both;animation-delay:.38s;}
.cs-hero-feat{font-family:var(--font-mono);font-size:10px;letter-spacing:1px;
  color:var(--text);background:rgba(var(--accent-rgb),.07);
  border:1px solid rgba(var(--accent-rgb),.2);border-radius:3px;padding:7px 14px;
  transition:all .2s;}
.cs-hero-feat:hover{border-color:rgba(var(--accent-rgb),.6);background:rgba(var(--accent-rgb),.12);
  box-shadow:0 0 14px rgba(var(--accent-rgb),.2);}
.cs-social-bar{display:flex;gap:16px;justify-content:center;align-items:center;margin:-16px 0 20px;}
.cs-social-btn{display:flex;align-items:center;justify-content:center;
  padding:6px;color:var(--muted);text-decoration:none;
  transition:color .2s,transform .2s,opacity .2s;}
.cs-social-btn:hover{color:var(--accent);transform:scale(1.18);}
.cs-social-dim{opacity:.28;}
.cs-social-dim:hover{opacity:.65;color:var(--muted);}
.cs-divider{display:flex;align-items:center;gap:14px;padding:24px 0 32px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:1px;color:var(--muted);
  border-top:1px solid var(--border);width:100%;justify-content:center;}
.cs-div-dot{color:var(--hint);}
.cs-courses-wrap{display:flex;flex-direction:column;align-items:center;gap:24px;
  width:100%;padding:0 20px 40px;}
@media(max-width:600px){
  .cs-hero{padding:88px 20px 32px;gap:12px;}
  .cs-hero .cs-brand{display:none;}
  .cs-hero-title{font-size:clamp(32px,11vw,52px);letter-spacing:-1px;}
  .cs-hero-feats{gap:6px;}
  .cs-hero-feat{font-size:9px;padding:6px 10px;}

}
.cs-brand{display:flex;align-items:baseline;gap:0;}
.cs-logo-ap{font-family:var(--font-display);font-size:36px;font-weight:800;letter-spacing:2px;color:var(--text);}
.cs-logo-graphs{font-family:var(--font-display);font-size:36px;font-weight:800;letter-spacing:2px;color:var(--accent);}
.cs-tagline{font-family:var(--font-mono);font-size:9px;letter-spacing:3px;color:var(--muted);text-transform:uppercase;margin:0;}
.cs-search-wrap{width:100%;max-width:400px;}
.cs-search-input{width:100%;background:rgba(255,255,255,.04);border:1px solid var(--border2);
  border-radius:3px;color:var(--text);font-family:var(--font-mono);font-size:11px;
  letter-spacing:.5px;padding:9px 14px;outline:none;transition:border-color .15s;
  -webkit-appearance:none;appearance:none;}
.cs-search-input:focus{border-color:rgba(var(--accent-rgb),.5);}
.cs-search-input::placeholder{color:var(--muted);}
.cs-search-input::-webkit-search-cancel-button{-webkit-appearance:none;}
/* ── TABS (Courses / My Stuff) ── */
.cs-tabs{display:inline-flex;gap:3px;padding:3px;margin:8px 0 22px;
  border:1px solid var(--border2);border-radius:999px;background:rgba(255,255,255,.03);}
.cs-tab{font-family:var(--font-mono);font-size:10px;letter-spacing:2.5px;text-transform:uppercase;
  color:var(--muted);background:none;border:none;border-radius:999px;padding:9px 26px;
  cursor:pointer;white-space:nowrap;transition:color .18s,background .18s;
  -webkit-tap-highlight-color:transparent;}
.cs-tab:hover{color:var(--text);}
.cs-tab:focus-visible{outline:2px solid rgba(var(--accent-rgb),.6);outline-offset:2px;}
.cs-tab.is-active{color:var(--bg);background:var(--accent);}
.cs-panel{display:flex;flex-direction:column;align-items:center;gap:24px;width:100%;}
.cs-panel[hidden]{display:none;}

/* ── COURSE FILTERS (search + category pills) ── */
.cs-filters{display:flex;flex-direction:column;align-items:center;gap:14px;width:100%;}
.cs-cat-row{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;width:100%;max-width:790px;}
.cs-cat-pill{font-family:var(--font-mono);font-size:9px;letter-spacing:2px;text-transform:uppercase;
  color:var(--muted);background:rgba(255,255,255,.03);border:1px solid var(--border2);
  border-radius:999px;padding:7px 15px;cursor:pointer;white-space:nowrap;
  transition:color .15s,border-color .15s,background .15s,transform .1s;
  -webkit-tap-highlight-color:transparent;}
.cs-cat-pill:hover{color:var(--text);border-color:rgba(var(--accent-rgb),.4);}
.cs-cat-pill:active{transform:scale(.94);}
.cs-cat-pill:focus-visible{outline:2px solid rgba(var(--accent-rgb),.6);outline-offset:2px;}
.cs-cat-pill.is-active{color:var(--accent);border-color:rgba(var(--accent-rgb),.6);
  background:rgba(var(--accent-rgb),.1);}
.cs-no-results{font-family:var(--font-mono);font-size:11px;letter-spacing:1.5px;color:var(--muted);
  padding:36px 0;text-align:center;width:100%;}
.cs-no-results[hidden]{display:none;}
.cs-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:100%;}
.cs-card{border:1px solid var(--border);border-radius:8px;padding:12px;background:var(--bg2);
  display:flex;flex-direction:column;gap:4px;transition:border-color .2s,background .2s,box-shadow .2s;position:relative;overflow:hidden;
  user-select:none;-webkit-touch-callout:none;transform-style:preserve-3d;will-change:transform;}
.cs-card::before{display:none;}
.cs-available{border-color:rgba(var(--accent-rgb),.35);cursor:pointer;}
.cs-available:hover{border-color:rgba(var(--accent-rgb),.75);background:rgba(var(--accent-rgb),.06);box-shadow:0 8px 24px rgba(0,0,0,.3);}
.cs-available:active{transform:scale(0.94)!important;filter:brightness(1.22);transition:transform .07s ease,filter .07s ease;}
.cs-card.cs-tapping{transform:scale(0.94)!important;filter:brightness(1.22);}
.cs-soon{opacity:.32;cursor:default;}
.cs-card-top{position:absolute;top:10px;right:10px;display:flex;align-items:center;gap:6px;}
.cs-badge{font-family:var(--font-mono);font-size:8px;letter-spacing:1.5px;font-weight:700;
  background:rgba(var(--accent-rgb),.08);color:rgba(var(--accent-rgb),.6);padding:2px 6px;border-radius:2px;}
.cs-badge-muted{background:rgba(255,255,255,.05);color:var(--muted);}
.cs-status{font-family:var(--font-mono);font-size:8px;letter-spacing:1px;display:flex;align-items:center;gap:4px;}
.cs-status-live{color:var(--accent);}
.cs-status-soon{color:var(--muted);}
.cs-status-beta{color:#555;}
.cs-card:has(.cs-status-beta)::after{
  content:'BETA';
  font-family:var(--font-mono);font-size:8px;letter-spacing:1px;font-weight:700;
  color:#555;pointer-events:none;user-select:none;}
.cs-card-name{font-family:var(--font-display);font-size:16px;font-weight:700;line-height:1.3;color:var(--text);flex:1;margin-top:2px;}
.cs-card-desc{font-family:var(--font-mono);font-size:9px;letter-spacing:.5px;color:var(--muted);margin-top:auto;order:1;}
.cs-card-icon{display:block;width:40px;height:40px;flex-shrink:0;align-self:flex-start;margin-bottom:4px;}
.cs-footer{font-family:var(--font-mono);font-size:8px;letter-spacing:2px;color:var(--hint);}
.cs-section-label{font-family:var(--font-display);font-size:18px;font-weight:800;letter-spacing:3px;
  color:var(--text);padding:24px 0 10px;width:100%;text-align:center;text-transform:uppercase;
  display:flex;align-items:center;gap:16px;}
.cs-section-label::before,.cs-section-label::after{content:'';flex:1;height:1px;background:rgba(255,255,255,.1);}
/* ── LONG-PRESS PIN ── */
.cs-hold-ring{position:absolute;inset:0;border-radius:8px;padding:2px;pointer-events:none;
  background:conic-gradient(from -90deg,var(--accent) 0%,var(--accent) var(--hold-pct,0%),transparent var(--hold-pct,0%));
  -webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);
  mask-composite:exclude;-webkit-mask-composite:destination-out;
  opacity:0;transition:opacity .12s;z-index:4;}
.cs-card.pressing .cs-hold-ring{opacity:1;}
@keyframes cs-pin-pulse{
  0%{box-shadow:0 0 0 0 rgba(var(--accent-rgb),.55);}
  55%{box-shadow:0 0 0 10px rgba(var(--accent-rgb),0);}
  100%{box-shadow:0 0 0 0 rgba(var(--accent-rgb),0);}
}
.cs-card.pin-done{animation:cs-pin-pulse .45s ease forwards;}
@keyframes cs-card-pin-out{from{opacity:1;transform:scale(1);}to{opacity:0;transform:scale(.82);}}
@keyframes cs-card-pin-in{from{opacity:0;transform:scale(.82);}to{opacity:1;transform:scale(1);}}
.cs-pin-hint{display:flex;align-items:center;justify-content:center;gap:5px;width:100%;
  font-family:var(--font-mono);font-size:9px;letter-spacing:1px;color:rgba(var(--accent-rgb),.5);
  padding:4px 0;animation:cs-hint-fade 4.5s ease forwards;}
@keyframes cs-hint-fade{0%{opacity:0;}18%{opacity:1;}72%{opacity:1;}100%{opacity:0;}}
.cs-pin-toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:1200;
  width:auto;padding:8px 16px;border-radius:999px;pointer-events:none;
  background:var(--bg2);border:1px solid rgba(var(--accent-rgb),.3);}
/* pinned section label slightly smaller */
#cs-pinned-section .cs-section-label{font-size:14px;padding:16px 0 10px;}

/* fill-mode `backwards` (not `both`): keeps the staggered fade-in but does NOT
   persist the final transform, which would otherwise clobber the JS hover-tilt. */
.cs-card{animation:cs-in .4s cubic-bezier(.22,1,.36,1) backwards;}
/* Un-hiding the Courses panel replays the entrance, and the first-paint delays
   above (tuned to follow the hero, up to 1.1s) would leave the grid looking
   empty on every tab switch. After the first paint the grid swaps to a quick
   row-by-row ramp — same animation, ~0.15s of stagger instead of ~1.1s. */
#cs-all-grid.cs-quick .cs-card{animation-delay:0s;}
#cs-all-grid.cs-quick .cs-card:nth-child(n+5) {animation-delay:.05s;}
#cs-all-grid.cs-quick .cs-card:nth-child(n+9) {animation-delay:.10s;}
#cs-all-grid.cs-quick .cs-card:nth-child(n+13){animation-delay:.15s;}
.cs-card:nth-child(1){animation-delay:.68s;}.cs-card:nth-child(2){animation-delay:.74s;}
.cs-card:nth-child(3){animation-delay:.80s;}.cs-card:nth-child(4){animation-delay:.86s;}
.cs-card:nth-child(5){animation-delay:.92s;}.cs-card:nth-child(6){animation-delay:.98s;}
.cs-card:nth-child(7){animation-delay:1.04s;}.cs-card:nth-child(8){animation-delay:1.10s;}
@media(max-width:600px){
  .cs-inner{padding:36px 16px 32px;gap:18px;}
  .cs-logo-ap,.cs-logo-graphs{font-size:28px;letter-spacing:1px;}
  .cs-grid{grid-template-columns:repeat(2,1fr);}
  .cs-search-wrap{max-width:100%;}
  .cs-filters{gap:11px;}
  .cs-tabs{margin:4px 0 16px;}
  .cs-tab{font-size:9px;letter-spacing:2px;padding:8px 20px;}
  .cs-panel{gap:18px;}
  .cs-cat-row{gap:5px;}
  .cs-cat-pill{font-size:8px;letter-spacing:1.4px;padding:6px 11px;}
  .cs-no-results{font-size:10px;padding:28px 0;}
}
@media(max-width:380px){
  .cs-cat-pill{padding:6px 9px;letter-spacing:1px;}
  .cs-logo-ap,.cs-logo-graphs{font-size:22px;letter-spacing:1px;}
  .cs-grid{grid-template-columns:repeat(2,1fr);}
  .cs-card{padding:12px 10px;gap:7px;}
  .cs-card-name{font-size:12px;}
  .cs-card-desc{font-size:8px;}
  .cs-inner{gap:14px;}
}

/* ── MODERN POLISH ───────────────────────────────────────────────────────── */

/* Profile setup modal */
#profile-modal-overlay{position:fixed;inset:0;z-index:9000;background:rgba(0,0,0,0.75);
  opacity:0;pointer-events:none;transition:opacity .2s;}
#profile-modal-overlay.open{opacity:1;pointer-events:auto;}
#profile-modal{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%) scale(.96);
  z-index:9001;background:var(--bg2);border:1px solid var(--border2);border-radius:16px;
  padding:32px 28px;width:min(380px,calc(100vw - 32px));display:flex;flex-direction:column;gap:12px;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;max-height:90vh;overflow-y:auto;}
#profile-modal.open{opacity:1;pointer-events:auto;transform:translate(-50%,-50%) scale(1);}
.profile-modal-sub{font-family:var(--font-body);font-size:12px;color:var(--muted);margin:-4px 0 4px;}
.profile-optional-sep{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:11px;
  font-family:var(--font-mono);letter-spacing:.1em;margin:4px 0;}
.profile-optional-sep::before,.profile-optional-sep::after{content:'';flex:1;height:1px;background:var(--border2);}
.profile-date-input{color-scheme:dark;}
.profile-select{background:rgba(255,255,255,0.04);cursor:pointer;}
.profile-select option{background:var(--bg2,#111118);color:var(--text,#f0f0f8);}

/* Modals */
#auth-modal,#upgrade-modal { border-radius:16px; }
#auth-menu { border-radius:10px; }

/* Auth modal inputs & buttons */
.auth-input,.auth-google-btn { border-radius:8px; }
.auth-submit-btn { border-radius:8px; }

/* Upgrade modal internals */
.upgrade-modal-features li { border-radius:8px; }
.upgrade-modal-buy-btn { border-radius:8px; }

/* ── UX MICRO-INTERACTIONS ───────────────────────────────────────────────── */

/* 1. Settings panel — staggered section fade-in */
.sp-section {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.22s ease, transform 0.22s ease;
}
#settings-panel.open .sp-section { opacity: 1; transform: translateY(0); }

/* 2. Input focus ring — single pulse on focus */
@keyframes focus-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0.45); }
  55%  { box-shadow: 0 0 0 4px rgba(var(--accent-rgb), 0.12); }
  100% { box-shadow: 0 0 0 2px rgba(var(--accent-rgb), 0.07); }
}
.auth-input:focus {
  animation: focus-pulse 0.38s ease-out forwards;
}

/* 3. Auth button — spinner while loading */
@keyframes btn-spin {
  to { transform: rotate(360deg); }
}
.auth-submit-btn.loading {
  pointer-events: none;
  color: transparent;
  position: relative;
}
.auth-submit-btn.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(var(--accent-rgb), 0.3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

/* 4. Nav tab — tactile press feedback */
.nav-btn:active {
  transform: scale(0.94);
  transition: transform 0.06s ease, color 0.06s ease, background 0.06s ease;
}

/* Settings panel — border-radius handled in sp block above */

/* Header hamburger dropdown nav */
header.nav-open nav { border-radius:14px; padding:10px; }
header.nav-open .nav-btn { border-radius:8px; }

/* Explore toolbar & tools */
#toolbar { border-radius:16px; }
.tool-btn { border-radius:8px; }
.tool-btn[data-label]::after,.sf-btn::after { border-radius:8px; }
.zoom-picker { border-radius:10px; }
.zoom-picker-btn { border-radius:5px; }

/* Connect bar */
#connect-bar { border-radius:16px; }
.cbar-chip { border-radius:20px; }
#cbar-theme,#cbar-do,#cbar-cancel { border-radius:8px; }

/* Timeline filters */
.tl-filter-btn { border-radius:20px; padding:4px 13px; }
.tl-filter-btn.active { background:rgba(var(--accent-rgb),0.1); }

/* Map controls */
#map-controls { border-radius:16px; }

/* Info panels */
#info-close { border-radius:6px; }

/* Course selector */
.cs-card { border-radius:12px; }
.cs-badge { border-radius:6px; }
.cs-search-input { border-radius:8px; }
.cs-logo-ap { border-radius:4px; }

/* Landing page */
.lf-card { border-radius:10px; }
.landing-enter-btn { border-radius:8px; }
.landing-tag { border-radius:4px; }

/* Logo tag */
.logo-tag { border-radius:4px; }

/* Vocab status buttons */
.vc-action-btn,.vc-status-btn { border-radius:6px; }

/* Info panel conn items, tags */
.conn-item { border-radius:6px; border-left-width:3px; }
.spicet-tag,.kw-tag { border-radius:4px; }
.spicet-dot { border-radius:8px; }

/* Exam counter */
.exam-counter { border-radius:8px; }

/* Tier badge/score — border-radius handled in sp block above */

/* ── GRAPHS VIEW ──────────────────────────────────────────────────────────── */
#view-graphs { overflow-y:auto; padding:0; }
#view-graphs.active-view { display:flex; flex-direction:column; }

/* ── MATH VIEWS ───────────────────────────────────────────────────────────── */
#view-grapher.active-view, #view-shapes.active-view, #view-solver.active-view { display:flex; }

.gv-header {
  display:flex; align-items:center; gap:16px; flex-wrap:wrap;
  padding:18px 20px 12px; border-bottom:1px solid var(--border2);
  background:var(--bg); position:sticky; top:0; z-index:10;
}
.gv-filter-bar { display:flex; gap:10px; align-items:center; }
.gv-select {
  background:var(--bg2); border:1px solid var(--border2); color:var(--text);
  font-family:var(--font-mono); font-size:10px; letter-spacing:1px;
  padding:7px 12px; border-radius:6px; cursor:pointer; outline:none;
}
.gv-select:focus { border-color:rgba(var(--accent-rgb),0.5); }
.gv-subtitle { font-family:var(--font-body); font-size:11px; color:var(--muted); }

.gv-grid {
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap:16px; padding:16px 20px;
}
.gv-card {
  background:var(--bg2); border:1px solid var(--border2); border-radius:12px;
  padding:18px; display:flex; flex-direction:column; gap:8px;
}
.gv-card:hover { border-color:rgba(var(--accent-rgb),0.25); }
.gv-card-title {
  font-family:var(--font-mono); font-size:11px; letter-spacing:1px;
  color:var(--accent); text-transform:uppercase;
}
.gv-card-desc {
  font-family:var(--font-body); font-size:12px; color:var(--muted);
  line-height:1.55;
}
.gv-card-unit {
  font-family:var(--font-mono); font-size:9px; letter-spacing:0.5px;
  color:var(--hint); text-transform:uppercase;
}
.gv-canvas-wrap { position:relative; width:100%; margin-top:4px; }
.gv-empty {
  grid-column:1/-1; text-align:center; padding:60px 20px;
  font-family:var(--font-body); font-size:13px; color:var(--muted);
}

@media(max-width:700px) {
  .gv-grid { grid-template-columns:1fr; padding:12px; }
  .gv-header { padding:12px; gap:10px; }
}

/* ── Feedback widget ─────────────────────────────────────────────────────── */
.cs-feedback-bar {
  display:flex; align-items:center; justify-content:center; gap:10px;
  margin:-8px 0 20px;
}
.cs-fb-btn {
  background:none; border:none; padding:2px 0; cursor:pointer;
  font-family:var(--font-mono); font-size:10px; letter-spacing:.5px;
  color:var(--muted); transition:color .15s;
}
.cs-fb-btn:hover { color:var(--accent); }
.cs-fb-sep { color:var(--muted); opacity:.35; pointer-events:none; font-size:12px; }

#feedback-overlay {
  position:fixed; inset:0; z-index:1049;
  background:rgba(0,0,0,0.7);
  opacity:0; pointer-events:none; transition:opacity .2s;
}
#feedback-overlay.open { opacity:1; pointer-events:auto; }
#feedback-modal {
  position:fixed; top:50%; left:50%;
  transform:translate(-50%,-50%) scale(.96);
  z-index:1050; width:min(380px,92vw);
  background:var(--bg2,#111118); border:1px solid var(--border2,#2a2a3e);
  border-radius:16px; padding:28px 24px;
  opacity:0; pointer-events:none;
  transition:opacity .18s, transform .18s;
}
#feedback-modal.open { opacity:1; pointer-events:auto; transform:translate(-50%,-50%) scale(1); }

#fb-type-row {
  display:flex; gap:8px; margin:14px 0 12px;
}
.fb-type-btn {
  flex:1; padding:7px 10px; border-radius:6px; cursor:pointer;
  font-family:var(--font-mono); font-size:9px; letter-spacing:1.5px;
  background:rgba(255,255,255,.04); border:1px solid var(--border2,#2a2a3e);
  color:var(--muted); transition:all .15s;
}
.fb-type-btn.active {
  background:rgba(var(--accent-rgb),.12);
  border-color:rgba(var(--accent-rgb),.45);
  color:var(--accent);
}
.fb-type-btn:not(.active):hover { border-color:rgba(var(--accent-rgb),.25); color:var(--text); }

#fb-message {
  resize:vertical; min-height:90px; width:100%;
  font-family:var(--font-body); margin-bottom:6px;
}
#fb-stars {
  display:flex; gap:4px; margin-bottom:10px;
}
.fb-star {
  background:none; border:none; cursor:pointer; padding:2px 4px;
  font-size:26px; line-height:1; color:rgba(255,255,255,.15);
  font-family:'Space Mono',monospace;
  transition:color .1s, transform .1s;
}
.fb-star.lit { color:#f59e0b; }
.fb-star:hover { transform:scale(1.15); }
#fb-category {
  margin-bottom:10px;
  font-family:var(--font-mono); font-size:11px; letter-spacing:.5px;
  background:rgba(255,255,255,.04); color:var(--text);
  border:1px solid var(--border2,#2a2a3e); border-radius:6px;
  padding:9px 12px; width:100%; cursor:pointer; outline:none;
  transition:border-color .15s;
}
#fb-category:focus { border-color:rgba(var(--accent-rgb),.5); }
#fb-category option { background:#111118; }

/* ── LIGHT MODE ─────────────────────────────────────────────────────────── */
[data-theme="light"] {
  --bg: #f4f2ef;
  --bg2: #ece9e5;
  --bg3: #e4e1dc;
  --border: rgba(0,0,0,0.08);
  --border2: rgba(0,0,0,0.14);
  --text: #1a1916;
  --muted: #6a6860;
  --hint: #b0ada6;
  --canvas-bg: 244,242,239;
  --accent: #ea580c;
  --accent-rgb: 234,88,12;
  --accent2: #6d28d9;
  --accent2-rgb: 109,40,217;
}

/* chrome panels */
[data-theme="light"] header{background:rgba(244,242,239,0.95)!important;}
[data-theme="light"] header.nav-open nav{background:rgba(244,242,239,0.98)!important;}
[data-theme="light"] #bottom-nav{background:rgba(244,242,239,0.97)!important;}
[data-theme="light"] #search-wrapper.mobile-open{background:rgba(244,242,239,0.98)!important;}
[data-theme="light"] #tl-header{background:rgba(244,242,239,0.95)!important;}
[data-theme="light"] #info-panel,[data-theme="light"] #map-info-panel{background:rgba(244,242,239,0.97)!important;}
[data-theme="light"] #toolbar,[data-theme="light"] #connect-bar{background:rgba(244,242,239,0.93)!important;}
[data-theme="light"] #explore-tour-card{background:rgba(244,242,239,0.97)!important;}
[data-theme="light"] .tour-next{color:#1a1916!important;}
[data-theme="light"] #map-controls{background:rgba(244,242,239,0.92)!important;}
[data-theme="light"] .zoom-picker{background:rgba(244,242,239,0.97)!important;}
[data-theme="light"] .subsub-node,[data-theme="light"] .sf-btn::after,[data-theme="light"] .tool-btn[data-label]::after{background:rgba(244,242,239,0.97)!important;}

/* overlays */
[data-theme="light"] #upgrade-modal-overlay,
[data-theme="light"] #auth-modal-overlay,
[data-theme="light"] #save-progress-overlay,
[data-theme="light"] #settings-overlay,
[data-theme="light"] #profile-modal-overlay,
[data-theme="light"] #feedback-overlay{background:rgba(180,176,168,0.65)!important;}

/* landing + misc */
[data-theme="light"] #landing{background:rgba(244,242,239,0.92)!important;}
[data-theme="light"] #rotate-notice{background:rgba(244,242,239,0.97)!important;}

/* map */
[data-theme="light"] #map-container{background:#c8d8e8!important;}

/* timeline */
[data-theme="light"] .tl-card{background:rgba(244,242,239,0.95)!important;}
[data-theme="light"] #tl-tip{background:rgba(236,233,229,0.98)!important;border-color:rgba(0,0,0,0.15)!important;}
[data-theme="light"] .tl-tick-label{color:rgba(0,0,0,0.5)!important;}
[data-theme="light"] .tl-tick-label.major{color:rgba(0,0,0,0.7)!important;}

/* explore bubbles — hardcoded white colors */
[data-theme="light"] .unit-bubble{border-color:rgba(0,0,0,0.15)!important;}
[data-theme="light"] .unit-bubble:hover{border-color:rgba(0,0,0,0.3)!important;}
[data-theme="light"] .unit-bubble.active-unit{border-color:rgba(0,0,0,0.4)!important;box-shadow:0 0 0 3px rgba(0,0,0,0.06)!important;}
[data-theme="light"] .u-name{color:#1a1916!important;}
[data-theme="light"] .sub-bubble{border-color:rgba(0,0,0,0.14)!important;color:#1a1916!important;}

/* info panel content */
[data-theme="light"] #info-desc{color:#3a3630!important;}
[data-theme="light"] .conn-item{color:#2a2824!important;background:rgba(0,0,0,0.02)!important;}

/* settings panel — white-transparent colors invisible on light */
[data-theme="light"] .sp-cancel-btn{color:rgba(0,0,0,0.35)!important;}
[data-theme="light"] .sp-cancel-btn:hover{color:rgba(200,60,60,0.7)!important;}
[data-theme="light"] .sp-tier-badge[data-tier="free"]{color:rgba(0,0,0,0.4)!important;border-color:rgba(0,0,0,0.12)!important;background:rgba(0,0,0,0.04)!important;}
[data-theme="light"] .sp-social-icon{background:rgba(0,0,0,0.05)!important;}
[data-theme="light"] .sp-unseen{background:rgba(0,0,0,0.07)!important;}
[data-theme="light"] #sp-close:hover{background:rgba(0,0,0,0.06)!important;}

/* course selector */
[data-theme="light"] .cs-topnav-btn{background:rgba(244,242,239,0.6)!important;}
[data-theme="light"] .cs-search-input{background:rgba(0,0,0,0.04)!important;}
[data-theme="light"] .cs-available{border-color:rgba(0,0,0,0.12)!important;}
[data-theme="light"] .cs-available:hover{border-color:rgba(0,0,0,0.25)!important;background:rgba(var(--accent-rgb),0.04)!important;box-shadow:0 8px 24px rgba(0,0,0,0.12)!important;}
[data-theme="light"] .cs-badge{background:rgba(0,0,0,0.05)!important;color:rgba(0,0,0,0.4)!important;}
[data-theme="light"] .cs-tabs{background:rgba(0,0,0,0.03)!important;border-color:rgba(0,0,0,0.12)!important;}
[data-theme="light"] .cs-tab.is-active{color:#fff!important;}
[data-theme="light"] .cs-cat-pill{background:rgba(0,0,0,0.03)!important;border-color:rgba(0,0,0,0.12)!important;}
[data-theme="light"] .cs-cat-pill:hover{border-color:rgba(var(--accent-rgb),0.45)!important;}
[data-theme="light"] .cs-cat-pill.is-active{background:rgba(var(--accent-rgb),0.08)!important;border-color:rgba(var(--accent-rgb),0.5)!important;}

/* landing feature cards */
[data-theme="light"] .lf-card{background:rgba(0,0,0,0.03)!important;}

/* feedback */
[data-theme="light"] #fb-category option{background:#ece9e5!important;}
[data-theme="light"] .fb-star{color:rgba(0,0,0,0.1)!important;}
[data-theme="light"] .fb-star.lit{color:#f59e0b!important;}

/* vocab progress bar */
[data-theme="light"] .sp-vocab-bar{background:var(--bg3)!important;}

/* ── LIGHT MODE: SIDEBARS (CSS injected by app.js) ──────────────────────── */
[data-theme="light"] #notes-sidebar,
[data-theme="light"] #vocab-sidebar,
[data-theme="light"] #pq-sidebar,
[data-theme="light"] #notes-def-sidebar{background:var(--bg2)!important;}
[data-theme="light"] .sidebar-tab{background:var(--bg2)!important;box-shadow:2px 0 8px rgba(0,0,0,0.1)!important;}
[data-theme="light"] #vocab-toolbar{background:rgba(236,233,229,0.85)!important;}
[data-theme="light"] .vocab-filter-select{background:var(--bg3)!important;color:var(--muted)!important;}
[data-theme="light"] #vocab-unit-title{color:var(--muted)!important;}
[data-theme="light"] #vocab-progress{color:rgba(0,0,0,0.3)!important;}

/* sidebar nav text */
[data-theme="light"] .notes-unit-name{color:rgba(26,25,22,0.6)!important;}
[data-theme="light"] .notes-unit-btn.open .notes-unit-name{color:var(--text)!important;}
[data-theme="light"] .notes-unit-chevron{color:rgba(0,0,0,0.2)!important;}
[data-theme="light"] .notes-unit-btn.open .notes-unit-chevron{color:rgba(0,0,0,0.45)!important;}
[data-theme="light"] .vocab-sidebar-name{color:rgba(26,25,22,0.6)!important;}
[data-theme="light"] .vocab-sidebar-btn.active .vocab-sidebar-name{color:var(--text)!important;}
[data-theme="light"] .sidebar-mobile-close{border-color:rgba(0,0,0,0.12)!important;color:rgba(0,0,0,0.4)!important;}
[data-theme="light"] #mobile-backdrop{background:rgba(0,0,0,0.3)!important;}

/* notes content area */
[data-theme="light"] .notes-chapter-title{color:var(--text)!important;}
[data-theme="light"] .notes-chapter-body{color:var(--muted)!important;}
[data-theme="light"] .notes-chapter-body strong{color:var(--text)!important;}
[data-theme="light"] .notes-chapter-body em{color:rgba(26,25,22,0.65)!important;}
[data-theme="light"] .ncn-label{color:var(--muted)!important;}
[data-theme="light"] .ncn-btn:hover .ncn-label{color:var(--text)!important;}
[data-theme="light"] #notes-def-term{color:var(--text)!important;}
[data-theme="light"] #notes-def-body{color:var(--muted)!important;}
[data-theme="light"] #notes-def-close{border-color:rgba(0,0,0,0.12)!important;color:rgba(0,0,0,0.35)!important;}
[data-theme="light"] #notes-empty-state p{color:rgba(0,0,0,0.45)!important;}

/* vocab card text */
[data-theme="light"] .vocab-card-num{color:rgba(0,0,0,0.18)!important;}
[data-theme="light"] .vocab-card-term{color:var(--text)!important;}
[data-theme="light"] .vocab-card-hint{color:rgba(0,0,0,0.12)!important;}
[data-theme="light"] .vocab-card-def{color:var(--muted)!important;}
[data-theme="light"] .vocab-card-example{color:rgba(26,25,22,0.55)!important;}
[data-theme="light"] .vocab-dot{background:rgba(0,0,0,0.1)!important;}
[data-theme="light"] .vocab-progress-bar{background:rgba(0,0,0,0.08)!important;}

/* vocab list view */
[data-theme="light"] .vlist-count{color:rgba(0,0,0,0.2)!important;}
[data-theme="light"] .vlist-row{border-bottom-color:rgba(0,0,0,0.05)!important;}
[data-theme="light"] .vlist-num{color:rgba(0,0,0,0.2)!important;}
[data-theme="light"] .vlist-term{color:var(--text)!important;}
[data-theme="light"] .vlist-def{color:var(--muted)!important;}
[data-theme="light"] .vlist-ex{color:rgba(26,25,22,0.5)!important;}

/* ── LIGHT MODE: DETAIL DRAWER (CSS injected by detail-drawer.js) ────────── */
[data-theme="light"] #detail-drawer{background:rgba(244,242,239,0.97)!important;border-left-color:rgba(0,0,0,0.1)!important;}
[data-theme="light"] #dd-scroll::-webkit-scrollbar-thumb{background:rgba(0,0,0,0.1)!important;}
[data-theme="light"] #dd-close{border-color:rgba(0,0,0,0.12)!important;color:rgba(0,0,0,0.35)!important;}
[data-theme="light"] #dd-close:hover{color:var(--text)!important;border-color:rgba(0,0,0,0.3)!important;}
[data-theme="light"] .dd-hero{border-bottom-color:rgba(0,0,0,0.06)!important;}
[data-theme="light"] .dd-title{color:var(--text)!important;}
[data-theme="light"] .dd-period{color:rgba(0,0,0,0.35)!important;}
[data-theme="light"] .dd-desc{color:var(--muted)!important;}
[data-theme="light"] .dd-kw-chip{color:rgba(0,0,0,0.35)!important;border-color:rgba(0,0,0,0.1)!important;}
[data-theme="light"] .dd-section{border-bottom-color:rgba(0,0,0,0.06)!important;}
[data-theme="light"] .dd-section-label{color:rgba(0,0,0,0.25)!important;}
[data-theme="light"] #dd-minimap-wrap{background:#c8d8e8!important;border-color:rgba(0,0,0,0.1)!important;}
[data-theme="light"] .dd-vocab-term{color:var(--text)!important;}
[data-theme="light"] .dd-vocab-def,[data-theme="light"] .dd-note-hit,[data-theme="light"] .dd-related-name{color:var(--muted)!important;}
[data-theme="light"] .dd-vocab-ex{color:rgba(26,25,22,0.5)!important;}
[data-theme="light"] .dd-note-hit{background:rgba(0,0,0,0.02)!important;}
[data-theme="light"] .dd-note-chapter,[data-theme="light"] .dd-related-unit{color:rgba(0,0,0,0.2)!important;}
[data-theme="light"] .dd-related-item:hover{background:rgba(0,0,0,0.03)!important;}

/* ── LIGHT MODE: MAP SVG (classes added to D3 elements in map.js) ─────────── */
[data-theme="light"] .map-bg{fill:#d4e4ef!important;}
[data-theme="light"] .map-countries path{fill:#b8ccd8!important;}
[data-theme="light"] .map-borders{stroke:#8aacbe!important;}
[data-theme="light"] .map-coasts{stroke:#5a8ab8!important;}

/* ── LIGHT MODE: NOTES TERM HIGHLIGHTS (.nt injected by app.js) ──────────── */
[data-theme="light"] .nt{color:var(--text)!important;border-bottom-color:rgba(var(--accent-rgb),0.45)!important;}

/* ── LIGHT MODE: QUIZ MODAL (injected by quiz.js) ───────────────────────── */
[data-theme="light"] #quiz-modal{background:var(--bg2)!important;border-color:rgba(var(--accent-rgb),0.2)!important;}
[data-theme="light"] #quiz-modal-header{border-bottom-color:rgba(var(--accent-rgb),0.1)!important;}
[data-theme="light"] #quiz-stimulus-text{color:var(--muted)!important;}
[data-theme="light"] #quiz-question-text{color:var(--text)!important;}
[data-theme="light"] .quiz-option{background:rgba(0,0,0,0.02)!important;border-color:rgba(var(--accent-rgb),0.15)!important;}
[data-theme="light"] .quiz-option:not(:disabled):hover{background:rgba(var(--accent-rgb),0.06)!important;}
[data-theme="light"] .quiz-option-text{color:var(--text)!important;}
[data-theme="light"] #quiz-feedback{background:rgba(0,0,0,0.04)!important;}
[data-theme="light"] #quiz-feedback-explanation{color:var(--muted)!important;}
[data-theme="light"] #quiz-final-time{color:var(--muted)!important;}

/* ── LIGHT MODE: GRAPHY (injected by graphy.js) ──────────────────────────── */
[data-theme="light"] #graphy-btn{background:rgba(244,242,239,0.9)!important;box-shadow:0 2px 12px rgba(0,0,0,0.15)!important;}
[data-theme="light"] #graphy-popout-btn:hover,[data-theme="light"] #graphy-close-btn:hover{border-color:rgba(0,0,0,0.25)!important;}
[data-theme="light"] .graphy-sp-bar{background:rgba(0,0,0,0.07)!important;}
[data-theme="light"] .graphy-sp-opt:hover:not(.active){border-color:rgba(0,0,0,0.2)!important;}
[data-theme="light"] .graphy-msg-model{color:var(--text)!important;}
[data-theme="light"] .graphy-msg em{color:var(--muted)!important;}
[data-theme="light"] .graphy-msg code{background:rgba(0,0,0,0.06)!important;}
[data-theme="light"] .graphy-msg pre{background:rgba(0,0,0,0.04)!important;}
[data-theme="light"] .graphy-tier-fast{background:rgba(0,0,0,0.04)!important;}
[data-theme="light"] .graphy-graph-wrap{border-color:rgba(0,0,0,0.08)!important;}
[data-theme="light"] #graphy-overlay.open{background:rgba(0,0,0,0.2)!important;}

/* ── LIGHT MODE: GLOW SUPPRESSION ───────────────────────────────────────── */
/* The scan line and neon body-top bloom are too cyberpunk for cream */
[data-theme="light"] #scan-line{display:none!important;}
[data-theme="light"] body::before{
  background:radial-gradient(ellipse 80% 60% at 50% 0%,rgba(var(--accent-rgb),0.04) 0%,transparent 70%)!important;}
/* Grid lines: neutral ink instead of accent */
[data-theme="light"] #bg-grid{
  background-image:
    linear-gradient(rgba(0,0,0,0.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,0,0,0.04) 1px,transparent 1px)!important;}
/* Replace neon focus ring with a soft drop shadow */
[data-theme="light"] input:focus,[data-theme="light"] textarea:focus{
  box-shadow:0 2px 8px rgba(var(--accent-rgb),0.1),0 1px 3px rgba(0,0,0,0.08)!important;}
/* Hover glow on course selector feature cards */
[data-theme="light"] .cs-hero-feat:hover{
  box-shadow:0 4px 16px rgba(var(--accent-rgb),0.1),0 2px 6px rgba(0,0,0,0.08)!important;}
/* Pin pulse: use a soft ink shadow instead of neon ring */
@keyframes cs-pin-pulse-light{
  0%{box-shadow:0 0 0 0 rgba(0,0,0,0.18);}
  55%{box-shadow:0 0 0 10px rgba(0,0,0,0);}
  100%{box-shadow:0 0 0 0 rgba(0,0,0,0);}
}
[data-theme="light"] .cs-card.pin-done{animation:cs-pin-pulse-light .45s ease forwards!important;}

/* ══════════════════════════════════════════════
   PROFILE OVERLAY — Phase 3 (public profiles)
   ══════════════════════════════════════════════ */

/* Header: centered column layout */
.prf-header{
  display:flex;flex-direction:column;align-items:center;
  gap:8px;padding:28px 22px 20px;flex-shrink:0;
  border-bottom:1px solid var(--border);
  position:relative;text-align:center;
}
.prf-header::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--accent),rgba(var(--accent-rgb),.2));
  border-radius:0 0 2px 2px;
}

/* Avatar */
.prf-avatar{
  width:80px;height:80px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:30px;font-weight:700;color:#fff;
  box-shadow:0 0 0 3px var(--bg),0 0 0 5px rgba(var(--accent-rgb),.35),0 6px 20px rgba(0,0,0,.4);
  flex-shrink:0;margin-bottom:2px;
}

/* Name block */
.prf-name-block{display:flex;flex-direction:column;align-items:center;gap:3px;}
.prf-display-name{
  font-family:var(--font-display);font-size:20px;font-weight:700;
  color:var(--text);line-height:1.2;
}
.prf-handle{font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:.3px;}
.prf-bio{
  font-family:var(--font-body);font-size:12px;color:var(--muted);
  max-width:320px;line-height:1.5;
}

/* Social row: follower / following / badge counts */
.prf-social-row{
  display:flex;align-items:center;gap:0;
  background:rgba(255,255,255,.04);border:1px solid var(--border);
  border-radius:12px;overflow:hidden;margin-top:4px;
}
.prf-stat-pill{
  display:flex;flex-direction:column;align-items:center;gap:1px;
  padding:8px 18px;background:none;border:none;cursor:pointer;transition:.15s;
}
.prf-stat-pill:hover{background:rgba(var(--accent-rgb),.08);}
.prf-stat-num{
  font-family:var(--font-display);font-size:16px;font-weight:700;color:var(--text);line-height:1;
}
.prf-stat-lbl{
  font-family:var(--font-mono);font-size:9px;letter-spacing:.8px;
  text-transform:uppercase;color:var(--muted);
}
.prf-social-div{width:1px;background:var(--border);align-self:stretch;}

/* Inline stat strip — no rotation, no scatter */
.prf-stat-strip{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:center;
  margin-top:2px;
}
.prf-sitem{
  font-family:var(--font-mono);font-size:11px;color:var(--muted);
  display:inline-flex;align-items:center;gap:3px;
}
.prf-sitem strong{color:var(--text);font-weight:600;}
.prf-strip-dot{color:var(--border);font-size:14px;line-height:1;}

/* Action buttons */
.prf-edit-btn,.prf-follow-btn{
  padding:7px 20px;border-radius:8px;font-family:var(--font-mono);
  font-size:11px;letter-spacing:.5px;font-weight:700;cursor:pointer;transition:.15s;
}
.prf-edit-btn{
  background:rgba(var(--accent-rgb),.08);border:1px solid rgba(var(--accent-rgb),.3);color:var(--text);
}
.prf-edit-btn:hover{background:rgba(var(--accent-rgb),.15);border-color:rgba(var(--accent-rgb),.6);}
.prf-follow-btn{background:var(--text);border:1px solid var(--text);color:var(--bg);}
.prf-follow-btn:hover{opacity:.85;}
.prf-follow-btn.following{background:none;border:1px solid var(--border);color:var(--muted);}
.prf-follow-btn.following:hover{border-color:rgba(255,80,80,.5);color:#ff6060;}

/* Hub author link in resource cards */
.hub-author[data-uid]{cursor:pointer;}
.hub-author[data-uid]:hover{color:var(--accent);text-decoration:underline;}

/* Tab bar */
.prf-tab-bar{
  display:flex;gap:4px;background:rgba(255,255,255,.04);border-radius:10px;
  padding:3px;margin:12px 22px;flex-shrink:0;
}
.prf-tab{
  font-family:var(--font-mono);font-size:10px;letter-spacing:1px;text-transform:uppercase;
  background:none;border:none;border-radius:8px;padding:6px 14px;color:var(--muted);cursor:pointer;transition:.15s;
}
.prf-tab.active{background:rgba(var(--accent-rgb),.14);color:var(--accent);}
.prf-tab:hover:not(.active){color:var(--text);}

/* Content area */
.prf-content{padding:0 0 40px;}
.prf-loading,.prf-empty{
  padding:48px 20px;text-align:center;
  font-family:var(--font-body);font-size:14px;color:var(--muted);
}

/* Exams tab */
.prf-exams-list{display:flex;flex-direction:column;gap:12px;padding:16px 0;}
.prf-course-stat{
  border:1px solid var(--border);border-radius:14px;padding:16px 20px;
  background:rgba(255,255,255,.02);
}
.prf-course-label{
  font-family:var(--font-display);font-size:14px;font-weight:700;color:var(--text);margin-bottom:12px;
}
.prf-course-metrics{display:flex;gap:16px;flex-wrap:wrap;}
.prf-metric{display:flex;flex-direction:column;gap:3px;min-width:70px;}
.prf-metric-val{font-family:var(--font-display);font-size:22px;font-weight:700;color:var(--text);}
.prf-metric-key{
  font-family:var(--font-mono);font-size:9px;letter-spacing:1px;
  text-transform:uppercase;color:var(--muted);
}

/* Materials tab */
.prf-materials-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;padding:16px 0;
}
.prf-material-card{cursor:pointer;}

/* Badges tab */
.prf-badges-section{padding:16px 0;}
.prf-badges-head{
  font-family:var(--font-mono);font-size:10px;letter-spacing:2px;
  text-transform:uppercase;color:var(--muted);margin-bottom:14px;
}
.prf-badge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;}
.prf-badge-card{
  border:1px solid var(--border);border-radius:12px;padding:16px 12px;
  text-align:center;opacity:.35;transition:.15s;
}
.prf-badge-card.earned{
  opacity:1;border-color:rgba(var(--accent-rgb),.4);background:rgba(var(--accent-rgb),.05);
}
.prf-badge-icon{font-size:28px;margin-bottom:6px;}
.prf-badge-name{
  font-family:var(--font-display);font-size:12px;font-weight:700;color:var(--text);margin-bottom:4px;
}
.prf-badge-desc{font-family:var(--font-body);font-size:10px;color:var(--muted);}

/* ── Followers / Following modal ── */
.prf-social-modal-overlay{
  position:fixed;inset:0;z-index:9999;
  background:rgba(0,0,0,.55);backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;
}
.prf-social-modal{
  background:var(--bg);border:1px solid var(--border);border-radius:14px;
  width:min(380px,90vw);max-height:70vh;
  display:flex;flex-direction:column;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.5);
}
.prf-social-modal-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-bottom:1px solid var(--border);flex-shrink:0;
}
.prf-social-modal-title{
  font-family:var(--font-mono);font-size:12px;letter-spacing:1px;
  text-transform:uppercase;color:var(--text);
}
.prf-social-modal-close{
  background:none;border:none;color:var(--muted);cursor:pointer;
  font-size:15px;line-height:1;padding:4px 6px;border-radius:6px;
  transition:color .15s,background .15s;
}
.prf-social-modal-close:hover{color:var(--text);background:rgba(255,255,255,.07);}
.prf-social-modal-body{
  flex:1;overflow-y:auto;padding:8px 0;
}
.prf-su-row{
  display:flex;align-items:center;gap:12px;
  padding:10px 16px;cursor:pointer;transition:background .12s;
}
.prf-su-row:hover{background:rgba(255,255,255,.05);}
.prf-su-avatar{
  width:38px;height:38px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:14px;font-weight:700;
  color:#fff;overflow:hidden;
}
.prf-su-avatar img{width:100%;height:100%;object-fit:cover;}
.prf-su-info{display:flex;flex-direction:column;gap:2px;min-width:0;}
.prf-su-name{font-size:13px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.prf-su-handle{font-size:11px;color:var(--muted);}
@keyframes prf-skel-shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}
.prf-skel-circle,.prf-skel-line{
  background:linear-gradient(90deg,rgba(255,255,255,.06) 25%,rgba(255,255,255,.12) 50%,rgba(255,255,255,.06) 75%);
  background-size:200% 100%;animation:prf-skel-shimmer 1.4s linear infinite;border-radius:4px;
}
.prf-skel-circle{width:38px;height:38px;border-radius:50%;flex-shrink:0;}
.prf-skel-name{height:12px;width:120px;border-radius:3px;}
.prf-skel-handle{height:10px;width:72px;border-radius:3px;margin-top:2px;}
.prf-su-skeleton{pointer-events:none;}

/* ── Profile Editor panel ── */
.prf-editor{
  position:absolute;inset:0;background:var(--bg);z-index:5;
  display:flex;flex-direction:column;
}
.prf-editor.hidden{display:none;}
.prf-editor-bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;border-bottom:1px solid var(--border);flex-shrink:0;
}
.prf-editor-title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:1.5px;text-transform:uppercase;
  color:var(--text);
}
.prf-ed-cancel-btn{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;
  background:none;border:none;color:var(--muted);cursor:pointer;padding:4px 8px;transition:.15s;
}
.prf-ed-cancel-btn:hover{color:var(--text);}
.prf-ed-save-btn{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;font-weight:700;
  background:var(--accent);border:none;color:#fff;cursor:pointer;
  padding:6px 16px;border-radius:8px;transition:.15s;
}
.prf-ed-save-btn:hover{opacity:.85;}
.prf-ed-save-btn:disabled{opacity:.5;cursor:default;}
.prf-editor-body{
  flex:1;overflow-y:auto;padding:24px 20px;
  display:flex;flex-direction:column;gap:16px;
  max-width:480px;margin:0 auto;width:100%;box-sizing:border-box;
}
.prf-ed-avatar-section{
  display:flex;align-items:center;gap:20px;
  padding:16px;border:1px solid var(--border);border-radius:12px;
  background:rgba(255,255,255,.02);
}
.prf-ed-avatar{width:64px;height:64px;font-size:22px;flex-shrink:0;}
.prf-ed-avatar-info{display:flex;flex-direction:column;gap:8px;}
.prf-ed-palette{display:flex;gap:8px;flex-wrap:wrap;}
.prf-ed-swatch{
  width:26px;height:26px;border-radius:50%;cursor:pointer;
  border:2px solid transparent;transition:.15s;outline:none;
}
.prf-ed-swatch:hover{transform:scale(1.15);}
.prf-ed-swatch.active{
  border-color:#fff;
  box-shadow:0 0 0 1px rgba(255,255,255,.4),0 2px 8px rgba(0,0,0,.3);
}
.prf-ed-field{display:flex;flex-direction:column;gap:6px;}
.prf-ed-label{
  font-family:var(--font-mono);font-size:10px;letter-spacing:1px;
  text-transform:uppercase;color:var(--muted);
}
.prf-ed-input{
  width:100%;padding:9px 12px;box-sizing:border-box;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);border-radius:8px;
  font-family:var(--font-mono);font-size:13px;color:var(--text);
  outline:none;transition:.15s;
}
.prf-ed-input:focus{border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.04);}
.prf-ed-textarea{
  width:100%;padding:9px 12px;box-sizing:border-box;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);border-radius:8px;
  font-family:var(--font-body);font-size:13px;color:var(--text);
  outline:none;transition:.15s;resize:vertical;min-height:80px;line-height:1.5;
}
.prf-ed-textarea:focus{border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.04);}
.prf-ed-char-count{
  font-family:var(--font-mono);font-size:10px;color:var(--muted);text-align:right;
}
.prf-ed-msg{font-family:var(--font-body);font-size:12px;min-height:16px;text-align:center;}
.prf-ed-msg.error{color:#f87171;}
.prf-ed-msg.ok{color:#34d399;}

/* Light-mode adjustments */
[data-theme="light"] .prf-header::before{
  background:linear-gradient(90deg,var(--accent),rgba(var(--accent-rgb),.1));
}
[data-theme="light"] .prf-social-row{background:rgba(0,0,0,.03);}
[data-theme="light"] .prf-ed-input,[data-theme="light"] .prf-ed-textarea{background:rgba(0,0,0,.03);}
[data-theme="light"] .prf-ed-avatar-section{background:rgba(0,0,0,.02);}

/* Responsive */
@media(max-width:600px){
  .prf-header{padding:24px 14px 16px;}
  .prf-stat-pill{padding:8px 12px;}
  .prf-tab-bar{margin:10px 14px;}
  .prf-badge-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));}
  .prf-editor-body{padding:18px 14px;}
}

/* ═══════════════════════════════════════════════════════════════════════════
   INTERACTIVE PERIODIC TABLE  (#view-elements / elements-view.js)
   Dark-first, theme-aware via app CSS vars. Built by initElementsView().
   ═══════════════════════════════════════════════════════════════════════════ */

#view-elements{overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;}
#pt-root{position:relative;max-width:1500px;margin:0 auto;padding:18px 20px 60px;
  color:var(--text);font-family:var(--font-body);font-size:13px;}

/* ── controls bar (search · temp slider · legend) ───────────────────────────── */
#pt-controls{display:flex;flex-wrap:wrap;gap:12px 16px;align-items:center;margin-bottom:16px;}
#pt-search{background:var(--bg2);border:1px solid var(--border2);border-radius:8px;
  color:var(--text);font-family:var(--font-body);font-size:13px;padding:9px 12px;min-width:280px;
  flex:1 1 280px;max-width:420px;transition:border-color .15s,box-shadow .15s;}
#pt-search::placeholder{color:var(--muted);}
#pt-search:focus{outline:none;border-color:rgba(var(--accent-rgb),.6);
  box-shadow:0 0 0 3px rgba(var(--accent-rgb),.12);}

#pt-temp-wrap{display:flex;align-items:center;gap:8px;background:var(--bg2);
  border:1px solid var(--border);padding:7px 12px;border-radius:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:var(--muted);cursor:pointer;}
#pt-temp-toggle{accent-color:var(--accent);cursor:pointer;}
#pt-temp{width:150px;accent-color:var(--accent);cursor:pointer;}
#pt-temp-val{min-width:62px;text-align:right;color:var(--text);}

#pt-legend{display:flex;flex-wrap:wrap;gap:6px 14px;margin-left:auto;}
.pt-legend-item{display:flex;align-items:center;gap:6px;cursor:default;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.02em;color:var(--muted);
  transition:color .12s;}
.pt-legend-item:hover{color:var(--text);}
.pt-legend-item i{width:12px;height:12px;border-radius:3px;display:inline-block;
  box-shadow:0 0 0 1px rgba(0,0,0,.25) inset;}

/* ── the 18-column table grid ───────────────────────────────────────────────── */
#pt-grid{display:grid;grid-template-columns:repeat(18,minmax(0,1fr));
  grid-auto-rows:minmax(0,auto);gap:3px;}

.pt-grouphead{font-family:var(--font-mono);font-size:10px;color:var(--muted);
  text-align:center;align-self:end;padding-bottom:3px;}
.pt-grouphead-info{cursor:pointer;color:var(--accent);
  text-decoration:underline dotted;text-underline-offset:2px;transition:color .12s;}
.pt-grouphead-info:hover{color:var(--text);}

.pt-cell{position:relative;border-radius:5px;padding:3px 2px 2px;min-height:clamp(40px,4vw,52px);
  cursor:pointer;color:#0b0e15;overflow:hidden;border:1px solid rgba(0,0,0,.28);
  background:var(--cat,#3a3f4b);
  transition:transform .08s ease,box-shadow .08s ease,opacity .14s ease,outline-color .1s;}
.pt-cell:hover{transform:translateY(-2px) scale(1.04);box-shadow:0 6px 16px rgba(0,0,0,.55);z-index:5;}
.pt-cell .pt-z{position:absolute;top:2px;left:4px;font-size:8px;font-weight:600;opacity:.85;}
.pt-cell .pt-sym{display:block;text-align:center;font-family:var(--font-display);
  font-weight:800;font-size:clamp(13px,1.3vw,16px);margin-top:8px;line-height:1;}
.pt-cell .pt-name{display:block;text-align:center;font-size:7px;line-height:1.05;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500;}
.pt-cell .pt-mass{display:block;text-align:center;font-size:7px;opacity:.78;font-weight:500;}
.pt-cell.pt-selected{outline:3px solid var(--accent);outline-offset:-1px;
  box-shadow:0 0 0 3px rgba(var(--accent-rgb),.35),0 6px 16px rgba(0,0,0,.5);z-index:6;}

.pt-marker{display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:9px;color:var(--muted);
  border:1px dashed var(--border2);border-radius:5px;min-height:clamp(40px,4vw,52px);}

/* search / category dimming + hit highlight */
.pt-cell.pt-dim,.pt-cell.pt-cat-dim{opacity:.14;}
.pt-cell.pt-hit{outline:2px solid var(--accent3);outline-offset:-1px;z-index:4;
  box-shadow:0 0 0 2px rgba(245,158,11,.35);}
#pt-grid.pt-searching .pt-grouphead,#pt-grid.pt-cat-hover .pt-grouphead{opacity:.4;}

/* ── group popover ──────────────────────────────────────────────────────────── */
#pt-popover{position:absolute;width:280px;max-width:calc(100vw - 40px);
  background:var(--bg3);border:1px solid rgba(var(--accent-rgb),.4);border-radius:10px;
  padding:13px 15px;box-shadow:0 12px 34px rgba(0,0,0,.6);z-index:30;display:none;}
#pt-popover.open{display:block;animation:view-fade-in .14s ease-out;}
.pt-pop-title{font-family:var(--font-display);font-weight:800;color:var(--accent);
  font-size:13px;margin-bottom:6px;}
.pt-pop-body{font-size:12px;color:var(--text);line-height:1.5;}

/* ── full-width detail panel ────────────────────────────────────────────────── */
#pt-detail{margin-top:20px;background:var(--bg2);border:1px solid var(--border);
  border-radius:14px;overflow:hidden;}
#pt-detail-head{display:flex;align-items:center;gap:16px;padding:16px 18px;
  background:var(--bg3);border-bottom:1px solid var(--border);flex-wrap:wrap;}
.pt-dh-badge{width:50px;height:50px;border-radius:10px;display:flex;align-items:center;
  justify-content:center;font-family:var(--font-display);font-weight:800;color:#0b0e15;
  font-size:18px;box-shadow:0 0 0 1px rgba(0,0,0,.25) inset;}
.pt-dh-main{display:flex;flex-direction:column;gap:1px;}
.pt-dh-sym{font-family:var(--font-display);font-size:28px;font-weight:800;line-height:1;color:var(--text);}
.pt-dh-name{font-size:13px;color:var(--muted);}
.pt-dh-meta{display:flex;flex-direction:column;gap:2px;margin-left:auto;text-align:right;
  font-family:var(--font-mono);font-size:11px;color:var(--muted);}

#pt-modes{display:flex;gap:4px;padding:10px 14px 0;flex-wrap:wrap;}
.pt-modetab{background:transparent;border:1px solid var(--border2);border-bottom:none;
  color:var(--muted);border-radius:8px 8px 0 0;padding:8px 16px;cursor:pointer;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.05em;text-transform:uppercase;
  transition:color .12s,background .12s;}
.pt-modetab:hover{color:var(--text);}
.pt-modetab.active{background:var(--bg2);color:var(--accent);border-color:var(--border2);
  border-bottom:1px solid var(--bg2);margin-bottom:-1px;}
.pt-navhint{margin-left:auto;align-self:center;color:var(--hint);font-family:var(--font-mono);
  font-size:10px;letter-spacing:.04em;white-space:nowrap;}
@media (max-width:720px){ .pt-navhint{display:none;} }
#pt-detail-body{padding:18px;border-top:1px solid var(--border);}

/* property rows */
.pt-propgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:2px 20px;}
.pt-row{display:flex;justify-content:space-between;gap:12px;
  border-bottom:1px solid var(--border);padding:6px 0;}
.pt-rk{color:var(--muted);font-size:12px;}
.pt-rv{color:var(--text);text-align:right;font-size:12px;font-weight:500;}
.pt-rv code,.pt-rv code sup{font-family:var(--font-mono);color:var(--accent);font-size:12px;}

.pt-section{margin-bottom:22px;}
.pt-section:last-child{margin-bottom:0;}
.pt-section h4{margin:0 0 10px;font-family:var(--font-mono);font-size:11px;
  text-transform:uppercase;letter-spacing:.08em;color:var(--muted);
  display:flex;align-items:center;gap:8px;}
.pt-count{background:rgba(var(--accent-rgb),.14);color:var(--accent);
  border-radius:10px;padding:1px 9px;font-size:11px;}

/* ── electron config / orbital diagram ──────────────────────────────────────── */
.pt-cfg-abbrev,.pt-cfg-full{margin-bottom:5px;}
.pt-cfg-abbrev code,.pt-cfg-full code,.pt-cfg-abbrev sup,.pt-cfg-full sup{
  font-family:var(--font-mono);color:var(--accent);font-size:14px;letter-spacing:.02em;}
.pt-cfg-full code{color:var(--text);}
.pt-diagram{display:flex;flex-wrap:wrap;gap:10px 14px;}
.pt-orbrow{display:flex;align-items:center;gap:3px;}
.pt-orblabel{font-family:var(--font-mono);font-size:11px;color:var(--accent);
  width:28px;flex-shrink:0;}
.pt-orb{display:inline-flex;width:22px;height:26px;border:1px solid var(--border2);
  border-radius:4px;align-items:center;justify-content:center;font-size:11px;line-height:1;
  background:var(--bg3);}
.pt-up{color:#6ee7c0;font-style:normal;}
.pt-dn{color:#ff9eb5;font-style:normal;margin-left:-2px;}
.pt-shells{display:flex;flex-wrap:wrap;gap:8px;}
.pt-shell{background:var(--bg3);border:1px solid var(--border2);border-radius:6px;
  padding:5px 9px;font-family:var(--font-mono);font-size:11px;color:var(--text);}

/* ── Lewis dot symbols (Phase A1) ───────────────────────────────────────────── */
/* control toggle — matches #pt-temp-wrap chrome */
#pt-lewis-wrap{display:flex;align-items:center;gap:7px;background:var(--bg2);
  border:1px solid var(--border);padding:7px 12px;border-radius:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:var(--muted);cursor:pointer;}
#pt-lewis-toggle{accent-color:var(--accent);cursor:pointer;}

/* trend heatmap control (Phase B1) — matches #pt-temp-wrap chrome */
#pt-trend-wrap{display:flex;align-items:center;gap:8px;background:var(--bg2);
  border:1px solid var(--border);padding:7px 12px;border-radius:8px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:var(--muted);cursor:pointer;}
#pt-trend-select{background:var(--bg);border:1px solid var(--border2);border-radius:6px;
  color:var(--text);font-family:var(--font-mono);font-size:11px;padding:4px 6px;cursor:pointer;}
#pt-trend-select:focus{outline:none;border-color:rgba(var(--accent-rgb),.6);}

/* gradient legend + AP directional arrows, shown only while a trend is active */
#pt-trend-legend{display:none;}
#pt-trend-legend.show{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;
  margin:-4px 0 14px;padding:9px 13px;background:var(--bg2);border:1px solid var(--border);
  border-radius:8px;font-family:var(--font-mono);font-size:11px;color:var(--muted);}
.pt-trend-label{color:var(--text);font-weight:600;letter-spacing:.03em;}
.pt-trend-bar{flex:0 0 160px;height:11px;border-radius:6px;
  box-shadow:0 0 0 1px rgba(0,0,0,.3) inset;}
.pt-trend-min,.pt-trend-max{color:var(--text);}
.pt-trend-arrows{display:flex;gap:14px;margin-left:auto;}
.pt-trend-arrows span{color:var(--accent);letter-spacing:.02em;}
/* elements lacking the trend property — muted diagonal hatch */
.pt-cell.pt-trend-na{background:repeating-linear-gradient(45deg,
  rgba(120,128,145,.22),rgba(120,128,145,.22) 4px,
  rgba(120,128,145,.08) 4px,rgba(120,128,145,.08) 8px)!important;color:var(--muted);}
/* in-cell overlay — dots only, sitting over the existing symbol; toggled on the grid */
.pt-cell .pt-lewis-mini{position:absolute;inset:0;display:none;pointer-events:none;}
.pt-cell .pt-lewis-mini .pt-lewis-svg{width:100%;height:100%;}
#pt-grid.pt-show-lewis .pt-lewis-mini{display:block;}
.pt-lewis-mini .pt-lewis-dot{fill:#0b0e15;}        /* dark dots on colored cells */
/* large symbol in the detail head — light on the dark header */
.pt-dh-lewis{width:56px;height:56px;flex-shrink:0;}
.pt-dh-lewis .pt-lewis-svg{width:100%;height:100%;}
.pt-dh-lewis .pt-lewis-sym{font-family:var(--font-display);font-weight:800;font-size:30px;fill:var(--text);}
.pt-dh-lewis .pt-lewis-dot{fill:var(--accent);}

/* ── Bohr model (Phase A2) ──────────────────────────────────────────────────── */
.pt-bohr-wrap{display:flex;align-items:center;gap:22px;flex-wrap:wrap;}
.pt-bohr-svg{width:230px;height:230px;max-width:62vw;flex-shrink:0;}
.pt-bohr-ring{fill:none;stroke:var(--border2);stroke-width:1;}
.pt-bohr-nuc{stroke:rgba(0,0,0,.35);stroke-width:1;}
.pt-bohr-sym{font-family:var(--font-display);font-weight:800;font-size:17px;fill:#0b0e15;}
.pt-bohr-e{fill:var(--accent);opacity:0;animation:pt-bohr-fade .35s ease-out forwards;}
@keyframes pt-bohr-fade{to{opacity:1;}}
@media (prefers-reduced-motion:reduce){ .pt-bohr-e{animation:none;opacity:1;} }

/* ── Trend sparklines (Phase B2) ────────────────────────────────────────────── */
.pt-spark-section{margin-top:18px;padding-top:14px;border-top:1px solid var(--border);}
.pt-spark-top{display:flex;align-items:center;justify-content:space-between;gap:12px;
  flex-wrap:wrap;margin-bottom:12px;}
.pt-spark-title{font-family:var(--font-display);font-weight:700;font-size:13px;
  letter-spacing:.04em;text-transform:uppercase;color:var(--text);}
.pt-spark-axis{display:inline-flex;gap:4px;padding:3px;background:var(--bg2);
  border:1px solid var(--border);border-radius:8px;}
.pt-spark-axbtn{border:0;background:transparent;color:var(--muted);cursor:pointer;
  font-family:var(--font-mono);font-size:11px;padding:4px 10px;border-radius:6px;
  letter-spacing:.02em;transition:background .15s,color .15s;}
.pt-spark-axbtn:hover{color:var(--text);}
.pt-spark-axbtn.active{background:var(--accent);color:#0b0e15;font-weight:600;}
.pt-spark-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px;}
.pt-spark-card{background:var(--bg2);border:1px solid var(--border);border-radius:10px;
  padding:10px 12px 8px;}
.pt-spark-head{display:flex;align-items:baseline;justify-content:space-between;gap:8px;
  margin-bottom:4px;}
.pt-spark-name{font-size:11px;color:var(--muted);letter-spacing:.02em;}
.pt-spark-val{font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--text);}
.pt-spark-svg{display:block;width:100%;height:48px;}
.pt-spark-base{stroke:var(--border);stroke-width:1;}
.pt-spark-line{fill:none;stroke:var(--muted);stroke-width:1.4;
  stroke-linejoin:round;stroke-linecap:round;opacity:.7;}
.pt-spark-dot{fill:var(--muted);opacity:.7;}
.pt-spark-sel{fill:var(--accent);stroke:var(--bg2);stroke-width:1.4;}
.pt-spark-guide{stroke:var(--accent);stroke-width:1;stroke-dasharray:2 2;opacity:.5;}
.pt-spark-lbl{font-family:var(--font-mono);font-size:10px;font-weight:700;fill:var(--accent);}
.pt-spark-dir{margin-top:6px;font-size:10px;color:var(--muted);letter-spacing:.01em;}
.pt-spark-na{height:48px;display:flex;align-items:center;justify-content:center;
  font-size:10px;color:var(--muted);font-style:italic;}

/* ── compounds + builder ────────────────────────────────────────────────────── */
.pt-cmp-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:8px;}
.pt-cmp{display:flex;gap:12px;background:var(--bg3);border:1px solid var(--border);
  border-radius:9px;padding:10px 12px;align-items:flex-start;}
.pt-cmp-formula{font-family:var(--font-display);font-size:17px;font-weight:700;
  color:var(--accent);min-width:56px;line-height:1.1;}
.pt-cmp-formula sub{font-size:10px;}
.pt-cmp-info{min-width:0;}
.pt-cmp-name{font-weight:600;color:var(--text);font-size:13px;}
.pt-cmp-desc{font-size:11px;color:var(--muted);margin:3px 0;line-height:1.4;}
.pt-cmp-meta{font-family:var(--font-mono);font-size:10px;color:var(--hint);}
.pt-struct-btn{margin-top:7px;background:var(--bg3);border:1px solid var(--border2);color:var(--text);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.04em;padding:4px 9px;border-radius:7px;
  cursor:pointer;transition:border-color .15s,background .15s,color .15s;}
.pt-struct-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(var(--accent-rgb),.07);}

/* ── structure windows (live Lewis previews embedded in the element panel) ──── */
.pt-struct-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px;}
.pt-struct-card{background:var(--bg3);border:1px solid var(--border);border-radius:11px;
  overflow:hidden;display:flex;flex-direction:column;}
.pt-struct-win{background:var(--bg2);border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;padding:8px;aspect-ratio:1/1;}
.pt-struct-win .mol-svg{width:100%;max-width:none;height:100%;}
.pt-struct-no{font-family:var(--font-mono);font-size:10px;color:var(--hint);}
.pt-struct-cap{padding:9px 11px 11px;display:flex;flex-direction:column;gap:3px;}
.pt-struct-top{display:flex;align-items:baseline;justify-content:space-between;gap:8px;}
.pt-struct-f{font-family:var(--font-display);font-size:16px;font-weight:700;color:var(--accent);}
.pt-struct-f sub{font-size:10px;}
.pt-struct-cls{font-family:var(--font-mono);font-size:10px;color:var(--hint);white-space:nowrap;}
.pt-struct-name{font-weight:600;font-size:12px;color:var(--text);}
.pt-struct-geom{font-size:11px;color:var(--muted);}
.pt-struct-card .pt-struct-btn{margin-top:6px;align-self:flex-start;}

.pt-hint{color:var(--muted);font-size:11px;margin:0 0 10px;}
.pt-basket{min-height:48px;border:2px dashed var(--border2);border-radius:9px;padding:9px;
  display:flex;flex-wrap:wrap;gap:7px;align-items:center;transition:border-color .15s,background .15s;}
.pt-basket.pt-drop{border-color:var(--accent);background:rgba(var(--accent-rgb),.07);}
.pt-basket-empty{color:var(--hint);font-size:11px;font-family:var(--font-mono);}
.pt-chip{background:rgba(var(--accent-rgb),.12);border:1px solid rgba(var(--accent-rgb),.4);
  color:var(--accent);border-radius:6px;padding:4px 9px;cursor:pointer;font-weight:600;
  font-family:var(--font-mono);font-size:12px;transition:background .12s;}
.pt-chip:hover{background:rgba(var(--accent-rgb),.22);}
.pt-chip i{font-style:normal;margin-left:6px;opacity:.65;}
.pt-basket-ctrls{display:flex;gap:8px;margin:10px 0;}
.pt-btn{background:var(--bg3);border:1px solid var(--border2);color:var(--text);
  border-radius:7px;padding:7px 13px;cursor:pointer;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.03em;transition:background .12s,border-color .12s;}
.pt-btn:hover{background:rgba(var(--accent-rgb),.1);border-color:rgba(var(--accent-rgb),.5);color:var(--accent);}
.pt-builder-h{grid-column:1/-1;font-family:var(--font-mono);font-size:10px;color:var(--muted);
  text-transform:uppercase;letter-spacing:.06em;margin-top:8px;}
.pt-empty{color:var(--muted);font-size:12px;padding:10px 0;font-style:italic;}

/* ── nuclear / isotope stability spectrum ───────────────────────────────────── */
.pt-spectrum-wrap{padding-top:8px;}
.pt-spectrum{position:relative;height:130px;border-bottom:1px solid var(--border2);
  margin:18px 0 4px;}
.pt-iso{position:absolute;bottom:0;width:14px;margin-left:-7px;border-radius:3px 3px 0 0;
  cursor:default;min-height:6px;transition:filter .1s;}
.pt-iso:hover{filter:brightness(1.25);}
.pt-iso .pt-iso-m{position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  font-family:var(--font-mono);font-size:8px;color:var(--muted);}
.pt-iso-stable{background:#6ee7c0;}
.pt-iso-radio{background:var(--accent3);}
i.pt-iso-stable,i.pt-iso-radio{display:inline-block;width:11px;height:11px;border-radius:2px;
  margin-right:5px;position:static;}
.pt-spectrum-axis{display:flex;justify-content:space-between;font-family:var(--font-mono);
  font-size:10px;color:var(--muted);}
.pt-spectrum-key{display:flex;flex-wrap:wrap;gap:16px;font-family:var(--font-mono);font-size:10px;
  color:var(--muted);margin-top:12px;align-items:center;}
.pt-spectrum-key span{display:flex;align-items:center;}

/* ── responsive (keep usable & no h-scroll down to ~1024px / mobile) ────────── */
@media (max-width:1080px){
  #pt-root{padding:14px 12px 50px;}
  #pt-legend{margin-left:0;flex-basis:100%;}
  .pt-cell .pt-name{display:none;}
}
@media (max-width:720px){
  #pt-grid{gap:2px;}
  .pt-cell{min-height:34px;border-radius:3px;}
  .pt-cell .pt-z,.pt-cell .pt-mass{display:none;}
  .pt-cell .pt-sym{margin-top:0;font-size:11px;}
  #pt-search{min-width:0;}
  .pt-dh-meta{margin-left:0;text-align:left;flex-basis:100%;}
}

/* ═══════════════════════════════════════════════════════════════════════════
   2D MOLECULE VISUALIZER  (#view-molecules / molecules-view.js)
   Lewis + VSEPR structure tool. Dark-first, theme-aware via app CSS vars.
   Built by initMoleculesView(); SVG driven entirely by deriveMolecule().
   ═══════════════════════════════════════════════════════════════════════════ */

#view-molecules{overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;}
#mol-root{display:flex;gap:18px;max-width:1500px;margin:0 auto;padding:18px 20px 60px;
  color:var(--text);font-family:var(--font-body);font-size:13px;align-items:flex-start;}

/* ── left: searchable picker grouped by molecular geometry ──────────────────── */
#mol-side{flex:0 0 270px;display:flex;flex-direction:column;gap:12px;
  position:sticky;top:14px;max-height:calc(100vh - 90px);}
#mol-search{background:var(--bg2);border:1px solid var(--border2);border-radius:8px;
  color:var(--text);font-family:var(--font-body);font-size:13px;padding:9px 12px;
  transition:border-color .15s,box-shadow .15s;}
#mol-search::placeholder{color:var(--muted);}
#mol-search:focus{outline:none;border-color:rgba(var(--accent-rgb),.6);
  box-shadow:0 0 0 3px rgba(var(--accent-rgb),.12);}

#mol-picker{overflow-y:auto;padding-right:4px;display:flex;flex-direction:column;gap:4px;}
.mol-geom-group{margin-bottom:8px;}
.mol-geom-head{font-family:var(--font-mono);font-size:10px;text-transform:uppercase;
  letter-spacing:.07em;color:var(--muted);padding:8px 4px 5px;position:sticky;top:0;
  background:var(--bg);display:flex;align-items:center;gap:7px;z-index:1;}
.mol-geom-count{background:rgba(var(--accent-rgb),.14);color:var(--accent);
  border-radius:9px;padding:0 7px;font-size:9px;}

.mol-pick{display:grid;grid-template-columns:auto 1fr auto;align-items:baseline;gap:8px;
  width:100%;text-align:left;background:var(--bg2);border:1px solid var(--border);
  border-radius:8px;padding:7px 11px;cursor:pointer;color:var(--text);
  transition:background .12s,border-color .12s,transform .08s;}
.mol-pick:hover{background:var(--bg3);border-color:rgba(var(--accent-rgb),.45);transform:translateX(2px);}
.mol-pick.mol-active{border-color:var(--accent);background:rgba(var(--accent-rgb),.1);
  box-shadow:0 0 0 1px rgba(var(--accent-rgb),.4) inset;}
.mol-pick-f{font-family:var(--font-display);font-weight:700;font-size:14px;color:var(--accent);}
.mol-pick-f sub{font-size:9px;}
.mol-pick-n{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.mol-pick-c{font-family:var(--font-mono);font-size:9px;color:var(--hint);}

/* ── right: canvas + toggles + info ─────────────────────────────────────────── */
#mol-main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:12px;}

#mol-modes{display:flex;gap:6px;align-items:center;flex-wrap:wrap;}
.mol-modetab{background:var(--bg2);border:1px solid var(--border2);color:var(--muted);
  border-radius:8px;padding:8px 18px;cursor:pointer;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.05em;text-transform:uppercase;transition:color .12s,background .12s,border-color .12s;}
.mol-modetab:hover{color:var(--text);}
.mol-modetab.active{background:rgba(var(--accent-rgb),.12);color:var(--accent);border-color:var(--accent);}

#mol-subtoggle{display:flex;gap:4px;margin-left:8px;background:var(--bg2);
  border:1px solid var(--border);border-radius:8px;padding:3px;}
.mol-subtab{background:transparent;border:none;color:var(--muted);border-radius:6px;
  padding:6px 12px;cursor:pointer;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.03em;transition:color .12s,background .12s;}
.mol-subtab:hover{color:var(--text);}
.mol-subtab.active{background:var(--bg3);color:var(--accent);}

#mol-overlays{display:flex;gap:7px;flex-wrap:wrap;}
.mol-ovchip{background:var(--bg2);border:1px solid var(--border2);color:var(--muted);
  border-radius:20px;padding:6px 14px;cursor:pointer;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.03em;transition:color .12s,background .12s,border-color .12s;}
.mol-ovchip:hover{color:var(--text);border-color:rgba(var(--accent-rgb),.45);}
.mol-ovchip.active{background:rgba(var(--accent-rgb),.14);color:var(--accent);
  border-color:rgba(var(--accent-rgb),.55);}

/* ── resonance toggle (D1) ──────────────────────────────────────────────────── */
#mol-resonance{display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  background:rgba(var(--accent-rgb),.06);border:1px solid rgba(var(--accent-rgb),.25);
  border-radius:10px;padding:6px 10px;}
.mol-res-nav{background:var(--bg2);border:1px solid var(--border2);color:var(--accent);
  border-radius:7px;width:30px;height:26px;cursor:pointer;font-size:11px;line-height:1;
  transition:background .12s,border-color .12s;}
.mol-res-nav:hover{background:rgba(var(--accent-rgb),.15);border-color:rgba(var(--accent-rgb),.55);}
.mol-res-label{font-family:var(--font-mono);font-size:11px;color:var(--text);
  letter-spacing:.04em;min-width:94px;text-align:center;}
.mol-res-hint{font-family:var(--font-mono);font-size:10px;color:var(--muted);
  letter-spacing:.02em;margin-left:auto;}
.mol-ion{font-size:.62em;font-weight:700;vertical-align:super;}
@media (max-width:720px){ .mol-res-hint{display:none;} }

/* ── SVG structure canvas ───────────────────────────────────────────────────── */
#mol-canvas{background:var(--bg2);border:1px solid var(--border);border-radius:14px;
  display:flex;align-items:center;justify-content:center;padding:10px;}
.mol-svg{width:100%;max-width:520px;height:auto;aspect-ratio:1/1;display:block;}

.mol-bond{stroke:var(--text);stroke-width:2.4;stroke-linecap:round;}
.mol-atom{stroke:rgba(0,0,0,.35);stroke-width:1.2;}
.mol-atom-label{font-family:var(--font-display);font-weight:800;font-size:17px;fill:#0b0e15;
  pointer-events:none;}
.mol-lp{fill:var(--text);}
.mol-ghost{fill:rgba(var(--accent-rgb),.08);stroke:var(--accent);stroke-width:1.3;
  stroke-dasharray:4 3;}

.mol-charge circle{fill:var(--bg3);stroke-width:1.4;}
.mol-charge text{font-family:var(--font-mono);font-weight:700;font-size:10px;}
.mol-charge.mol-pos circle{stroke:#6ea8ff;}
.mol-charge.mol-pos text{fill:#6ea8ff;}
.mol-charge.mol-neg circle{stroke:#ff7a59;}
.mol-charge.mol-neg text{fill:#ff7a59;}

.mol-angle-arc{stroke:var(--accent3);stroke-width:1.6;stroke-dasharray:3 2;}
.mol-angle-label{font-family:var(--font-mono);font-size:11px;fill:var(--accent3);font-weight:600;}
.mol-dipole{stroke:var(--accent);stroke-width:2.2;stroke-linecap:round;}
.mol-arrow-head{fill:var(--accent);}

/* δ+/δ− partial-charge overlay (C1) */
.mol-delta{font-family:var(--font-mono);font-weight:700;font-size:10px;}
.mol-delta.mol-dp{fill:#6ea8ff;}
.mol-delta.mol-dm{fill:#ff7a59;}

/* ── info panel ─────────────────────────────────────────────────────────────── */
#mol-info{background:var(--bg2);border:1px solid var(--border);border-radius:14px;padding:16px 18px;}
.mol-info-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:3px;}
.mol-info-formula{font-family:var(--font-display);font-weight:800;font-size:24px;color:var(--accent);}
.mol-info-formula sub{font-size:13px;}
.mol-info-name{font-size:14px;color:var(--text);}
.mol-info-class{font-family:var(--font-mono);font-size:11px;color:var(--muted);
  letter-spacing:.03em;margin-bottom:12px;}
.mol-propgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:2px 20px;}
.mol-row{display:flex;justify-content:space-between;gap:12px;
  border-bottom:1px solid var(--border);padding:6px 0;}
.mol-rk{color:var(--muted);font-size:12px;}
.mol-rv{color:var(--text);text-align:right;font-size:12px;font-weight:500;}
.mol-sub{color:var(--hint);font-weight:400;font-size:11px;}
.mol-tag{border-radius:5px;padding:1px 8px;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.04em;}
.mol-polar{background:rgba(110,168,255,.16);color:#6ea8ff;}
.mol-nonpolar{background:rgba(127,209,185,.16);color:#7fd1b9;}
.mol-note{margin-top:12px;padding:10px 12px;background:var(--bg3);border:1px solid var(--border);
  border-left:3px solid var(--accent);border-radius:8px;font-size:12px;color:var(--muted);line-height:1.5;}

/* ── intermolecular forces (C2) ─────────────────────────────────────────────── */
.mol-imf-block{margin-top:14px;}
.mol-imf-label{color:var(--muted);font-size:12px;margin-bottom:7px;}
.mol-imf-row{display:flex;flex-wrap:wrap;gap:6px;}
.mol-imf{border-radius:5px;padding:2px 9px;font-family:var(--font-mono);font-size:10px;
  letter-spacing:.03em;border:1px solid transparent;opacity:.55;}
.mol-imf-strong{opacity:1;font-weight:600;}
.mol-imf-h{background:rgba(243,139,168,.16);color:#f38bac;border-color:rgba(243,139,168,.35);}
.mol-imf-d{background:rgba(110,168,255,.16);color:#6ea8ff;border-color:rgba(110,168,255,.35);}
.mol-imf-l{background:rgba(148,163,184,.16);color:#94a3b8;border-color:rgba(148,163,184,.35);}
.pt-struct-imf{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px;}
.pt-struct-imf .mol-imf{font-size:9px;padding:1px 7px;}

/* ── bond polarity breakdown (C1) ───────────────────────────────────────────── */
.mol-bp-rows{display:flex;flex-direction:column;gap:4px;}
.mol-bp{display:flex;align-items:center;gap:10px;font-size:12px;}
.mol-bp-bond{font-family:var(--font-mono);color:var(--text);min-width:62px;}
.mol-bp-en{color:var(--muted);font-size:11px;}
.mol-bp-tag{margin-left:auto;border-radius:5px;padding:1px 8px;font-family:var(--font-mono);
  font-size:10px;letter-spacing:.03em;border:1px solid transparent;}
.mol-bp-non{background:rgba(127,209,185,.16);color:#7fd1b9;border-color:rgba(127,209,185,.32);}
.mol-bp-pol{background:rgba(110,168,255,.16);color:#6ea8ff;border-color:rgba(110,168,255,.32);}
.mol-bp-ion{background:rgba(255,122,89,.16);color:#ff7a59;border-color:rgba(255,122,89,.32);}

/* ── formal-charge step-by-step (C3) ────────────────────────────────────────── */
.mol-fc-toggle{margin-top:2px;background:var(--bg3);color:var(--accent);border:1px solid var(--border);
  border-radius:7px;padding:5px 12px;font-family:var(--font-mono);font-size:11px;cursor:pointer;
  transition:background .15s,border-color .15s;}
.mol-fc-toggle:hover{background:var(--bg2);border-color:var(--accent);}
.mol-fc-steps{margin-top:9px;display:flex;flex-direction:column;gap:5px;}
.mol-fc-step{display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;}
.mol-fc-atom{font-weight:700;color:var(--text);min-width:34px;}
.mol-fc-eq{color:var(--muted);}
.mol-fc-is{color:var(--hint);}
.mol-fc-res{font-weight:700;text-align:right;min-width:26px;color:var(--text);}
.mol-fc-res.mol-pos{color:#6ea8ff;}
.mol-fc-res.mol-neg{color:#ff7a59;}
.mol-fc-locked{margin-top:9px;background:var(--bg3);border:1px solid var(--border);border-radius:10px;
  padding:16px 14px;text-align:center;}
.mol-fc-locked-icon{font-size:20px;color:var(--accent);margin-bottom:6px;}
.mol-fc-locked-title{font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.06em;
  color:var(--text);margin-bottom:5px;}
.mol-fc-locked-sub{font-size:12px;color:var(--muted);line-height:1.5;margin-bottom:11px;}
.mol-fc-locked-btn{background:var(--accent);color:#0b0e15;border:none;border-radius:7px;
  padding:7px 16px;font-family:var(--font-mono);font-size:11px;font-weight:700;cursor:pointer;}
.mol-fc-locked-btn:hover{filter:brightness(1.08);}

/* ── responsive ─────────────────────────────────────────────────────────────── */
@media (max-width:1080px){
  #mol-root{flex-direction:column;padding:14px 12px 50px;}
  #mol-side{flex-basis:auto;width:100%;position:static;max-height:none;}
  #mol-picker{max-height:230px;}
}
@media (max-width:720px){
  #mol-modes{gap:4px;}
  #mol-subtoggle{margin-left:0;flex-basis:100%;}
  .mol-modetab{padding:7px 13px;}
  .mol-info-formula{font-size:20px;}
}

/* ═══════════════════════════════════════════════════════════════════════════
   FORCES — FREE-BODY DIAGRAM BUILDER  (#view-forces / forces-view.js)
   Mirrors the Structure tab's shell shape (#mol-* classes) with fv- prefixes.
   ═══════════════════════════════════════════════════════════════════════════ */

#view-forces{overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;}
#fv-root{display:flex;gap:18px;max-width:1200px;margin:0 auto;padding:18px 20px 60px;
  color:var(--text);font-family:var(--font-body);font-size:13px;align-items:flex-start;}

#fv-side{flex:0 0 230px;display:flex;flex-direction:column;gap:4px;
  position:sticky;top:14px;max-height:calc(100vh - 90px);overflow-y:auto;}
.fv-cat-group{margin-bottom:8px;display:flex;flex-direction:column;gap:5px;}
.fv-cat-head{font-family:var(--font-mono);font-size:10px;text-transform:uppercase;
  letter-spacing:.07em;color:var(--muted);padding:8px 4px 5px;position:sticky;top:0;
  background:var(--bg);display:flex;align-items:center;gap:7px;z-index:1;}
.fv-cat-count{background:rgba(var(--accent-rgb),.14);color:var(--accent);
  border-radius:9px;padding:0 7px;font-size:9px;}
.fv-pick{display:flex;flex-direction:column;gap:2px;width:100%;text-align:left;
  background:var(--bg2);border:1px solid var(--border);border-radius:8px;padding:9px 12px;
  cursor:pointer;color:var(--text);transition:background .12s,border-color .12s,transform .08s;}
.fv-pick:hover{background:var(--bg3);border-color:rgba(var(--accent-rgb),.45);transform:translateX(2px);}
.fv-pick.fv-pick-active{border-color:var(--accent);background:rgba(var(--accent-rgb),.1);
  box-shadow:0 0 0 1px rgba(var(--accent-rgb),.4) inset;}
.fv-pick-name{font-size:13px;font-weight:600;}
.fv-pick-topic{font-family:var(--font-mono);font-size:10px;color:var(--muted);}

#fv-obj-tabs{display:flex;gap:6px;}
.fv-obj-tab{background:var(--bg2);border:1px solid var(--border2);color:var(--muted);
  border-radius:8px;padding:7px 16px;cursor:pointer;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.03em;transition:color .12s,background .12s,border-color .12s;}
.fv-obj-tab:hover{color:var(--text);}
.fv-obj-tab.fv-obj-tab-active{background:rgba(var(--accent-rgb),.12);color:var(--accent);border-color:var(--accent);}

#fv-main{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:12px;}
#fv-header{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;}
#fv-scenario-name{font-family:var(--font-display);font-weight:700;font-size:18px;color:var(--accent);}
#fv-scenario-topic{font-family:var(--font-mono);font-size:11px;color:var(--muted);}

#fv-canvas{background:var(--bg2);border:1px solid var(--border);border-radius:14px;
  display:flex;align-items:center;justify-content:center;padding:10px;touch-action:none;}
.fv-svg{width:100%;max-width:420px;height:auto;aspect-ratio:1/1;display:block;}
.fv-axis{stroke:var(--border2);stroke-width:1;stroke-dasharray:2 3;}
.fv-surface{stroke:var(--muted);stroke-width:2;}
.fv-object{fill:var(--bg3);stroke:var(--text);stroke-width:1.5;}
.fv-center-dot{fill:var(--text);}
.fv-arrow line{stroke-width:3;stroke-linecap:round;}
.fv-arrow.fv-dragging line{stroke-width:4;}
.fv-handle{cursor:grab;stroke:var(--bg);stroke-width:1.5;}
.fv-handle:active{cursor:grabbing;}
.fv-arrow-label{font-family:var(--font-mono);font-weight:700;font-size:13px;text-anchor:middle;
  dominant-baseline:middle;pointer-events:none;}

#fv-palette{display:flex;gap:7px;flex-wrap:wrap;}
.fv-chip{display:flex;align-items:center;gap:6px;background:var(--bg2);
  border:1px solid var(--border2);color:var(--muted);border-radius:20px;padding:6px 14px;
  cursor:pointer;font-family:var(--font-mono);font-size:11px;letter-spacing:.02em;
  transition:color .12s,background .12s,border-color .12s;}
.fv-chip:hover{color:var(--text);border-color:var(--fv-c);}
.fv-chip.fv-chip-active{background:color-mix(in srgb, var(--fv-c) 16%, transparent);
  color:var(--fv-c);border-color:var(--fv-c);}
.fv-chip-sym{font-weight:700;}

#fv-mag-controls{display:flex;flex-direction:column;gap:5px;}
.fv-mag-list{display:flex;flex-direction:column;gap:5px;}
.fv-mag-row{display:flex;align-items:center;justify-content:space-between;
  background:var(--bg2);border:1px solid var(--border);border-radius:8px;padding:7px 12px;}
.fv-mag-label{font-family:var(--font-mono);font-size:11px;}
.fv-mag-dots{display:flex;gap:5px;}
.fv-mag-dot{width:14px;height:14px;border-radius:50%;border:1.5px solid var(--border2);
  background:transparent;cursor:pointer;transition:background .12s,border-color .12s;}
.fv-mag-dot:hover{border-color:var(--accent);}
.fv-mag-dot-on{background:var(--accent);border-color:var(--accent);}

#fv-actions{display:flex;gap:8px;}
#fv-check-btn{background:var(--accent);color:#0b0e15;border:none;border-radius:8px;
  padding:9px 20px;font-family:var(--font-mono);font-size:12px;font-weight:700;cursor:pointer;
  letter-spacing:.03em;}
#fv-check-btn:hover{filter:brightness(1.08);}
#fv-reset-btn{background:var(--bg2);color:var(--muted);border:1px solid var(--border2);
  border-radius:8px;padding:9px 16px;font-family:var(--font-mono);font-size:12px;cursor:pointer;}
#fv-reset-btn:hover{color:var(--text);border-color:rgba(var(--accent-rgb),.45);}

#fv-info{background:var(--bg2);border:1px solid var(--border);border-radius:14px;padding:16px 18px;}
.fv-info-empty{color:var(--muted);font-size:12px;line-height:1.5;}
.fv-verdict{font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.02em;
  padding:9px 12px;border-radius:8px;margin-bottom:12px;}
.fv-verdict-pass{background:rgba(127,209,185,.14);color:#7fd1b9;}
.fv-verdict-fail{background:rgba(255,122,89,.14);color:#ff7a59;}
.fv-check-list{display:flex;flex-direction:column;gap:8px;}
.fv-check-row{display:flex;gap:10px;align-items:flex-start;border-bottom:1px solid var(--border);
  padding-bottom:8px;}
.fv-check-row:last-child{border-bottom:none;padding-bottom:0;}
.fv-check-badge{font-size:14px;font-weight:700;flex-shrink:0;line-height:1.4;}
.fv-pass .fv-check-badge{color:#7fd1b9;}
.fv-fail .fv-check-badge{color:#ff7a59;}
.fv-check-label{font-size:12px;font-weight:600;color:var(--text);}
.fv-check-detail{font-size:11px;color:var(--muted);margin-top:1px;}

@media (max-width:1080px){
  #fv-root{flex-direction:column;padding:14px 12px 50px;}
  #fv-side{flex-basis:auto;width:100%;position:static;max-height:none;
    flex-direction:row;flex-wrap:wrap;}
  .fv-pick{flex:1 1 160px;}
}

/* ── LEVEL CHIP ──────────────────────────────────────────────────────────── */
.lv-chip{font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;color:var(--accent);
  border:1px solid rgba(var(--accent-rgb),.3);background:rgba(var(--accent-rgb),.06);
  padding:5px 10px;border-radius:6px;cursor:pointer;flex-shrink:0;align-items:center;
  gap:4px;white-space:nowrap;transition:background .15s,border-color .15s;}
.lv-chip:hover{background:rgba(var(--accent-rgb),.13);border-color:rgba(var(--accent-rgb),.55);}
@media(max-width:600px){#lv-chip{display:none!important;}}

/* ── LEVEL POPUP ─────────────────────────────────────────────────────────── */
#lv-popup{
  position:fixed;z-index:2000;
  background:var(--bg2,#111);border:1px solid rgba(var(--accent-rgb),.28);
  border-radius:14px;padding:18px 20px;width:220px;
  box-shadow:0 16px 48px rgba(0,0,0,.65),0 0 0 1px rgba(var(--accent-rgb),.06);
  opacity:0;pointer-events:none;transform:translateY(-8px);
  transition:opacity .18s ease,transform .18s ease;}
#lv-popup.open{opacity:1;pointer-events:auto;transform:translateY(0);}
.lvp-title{font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--text);
  letter-spacing:.3px;margin-bottom:12px;display:flex;align-items:baseline;gap:7px;}
.lvp-name{font-size:11px;font-weight:400;color:var(--accent);letter-spacing:.5px;text-transform:uppercase;}
.lvp-bar-wrap{height:8px;background:rgba(255,255,255,.08);border-radius:99px;overflow:hidden;margin-bottom:9px;}
.lvp-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),color-mix(in srgb,var(--accent) 70%,#fff));
  border-radius:99px;transition:width .4s cubic-bezier(.34,1.56,.64,1);}
.lvp-xp{font-family:var(--font-mono);font-size:11px;letter-spacing:.4px;color:var(--text);}
.lvp-to{color:var(--muted);}

/* ── SKELETON / SHIMMER ──────────────────────────────────────────────────── */
.skeleton{background:rgba(255,255,255,0.055);border-radius:5px;overflow:hidden;position:relative;}
.skeleton::after{content:'';position:absolute;inset:0;
  background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,0.07) 50%,transparent 100%);
  animation:shimmer 1.6s infinite;}
@keyframes shimmer{0%{transform:translateX(-100%);}100%{transform:translateX(100%);}}
[data-theme="light"] .skeleton{background:rgba(0,0,0,0.07);}
[data-theme="light"] .skeleton::after{background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,0.5) 50%,transparent 100%);}

/* ── XP TOAST STACK ──────────────────────────────────────────────────────── */
#xp-toast-stack{position:fixed;bottom:72px;right:20px;display:flex;flex-direction:column;
  align-items:flex-end;gap:6px;z-index:3100;pointer-events:none;}
.xp-toast-wrap{display:flex;justify-content:flex-end;}
.xp-toast{font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;color:var(--accent);
  background:var(--bg2);border:1px solid rgba(var(--accent-rgb),.35);border-radius:8px;
  padding:7px 13px;animation:xp-float 2.5s ease-out forwards;}
@keyframes xp-float{
  0%  {opacity:0;transform:translateY(10px) scale(.75);}
  14% {opacity:1;transform:translateY(-4px) scale(1.18);}
  26% {transform:translateY(1px) scale(.97);}
  38% {transform:translateY(0) scale(1);}
  80% {opacity:1;transform:translateY(0) scale(1);}
  100%{opacity:0;transform:translateY(0) scale(.95);}
}

/* ── LEVEL-UP BANNER ─────────────────────────────────────────────────────── */
#lv-up-banner{position:fixed;top:calc(var(--header) + 8px);left:50%;
  transform:translateX(-50%) translateY(-16px);background:var(--bg2);
  border:1px solid rgba(var(--accent-rgb),.5);border-radius:10px;padding:10px 18px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.5px;color:var(--accent);
  box-shadow:0 8px 28px rgba(0,0,0,.6);z-index:3200;display:flex;align-items:center;
  gap:10px;opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;}
#lv-up-banner.show{opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto;}
#lv-up-banner button{background:none;border:none;color:var(--muted);cursor:pointer;
  font-size:13px;line-height:1;padding:0 2px;}

/* ── SLIDING NAV INK INDICATOR ───────────────────────────────────────────── */
nav{position:relative;}
.nav-ink{position:absolute;bottom:3px;height:2px;background:var(--accent);border-radius:2px;
  pointer-events:none;transition:left .24s cubic-bezier(.4,0,.2,1),width .24s cubic-bezier(.4,0,.2,1),opacity .18s;
  box-shadow:0 0 8px rgba(var(--accent-rgb),.5);}

/* ── MCQ CORRECT GLOW + WRONG SHAKE ─────────────────────────────────────── */
@keyframes pq-correct-glow{
  0%  {box-shadow:0 0 0 0 rgba(34,197,94,0);transform:scale(1);}
  35% {box-shadow:0 0 0 7px rgba(34,197,94,.28);transform:scale(1.012);}
  100%{box-shadow:0 0 0 0 rgba(34,197,94,0);transform:scale(1);}
}
@keyframes pq-wrong-shake{
  0%,100%{transform:translateX(0);}
  16%{transform:translateX(-8px);}
  33%{transform:translateX(6px);}
  50%{transform:translateX(-5px);}
  66%{transform:translateX(4px);}
  83%{transform:translateX(-2px);}
}
.pq-anim-correct{animation:pq-correct-glow .55s ease-out both;}
.pq-anim-wrong  {animation:pq-wrong-shake  .38s cubic-bezier(.36,.07,.19,.97) both;}

/* ── CS CARD 3-D TILT + SPOTLIGHT ────────────────────────────────────────── */
.cs-card-shine{position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  opacity:0;transition:opacity .3s;z-index:1;overflow:hidden;}
.cs-card:hover .cs-card-shine{opacity:1;}

/* ── GRAPHY SEND SPRING ──────────────────────────────────────────────────── */
@keyframes send-spring{
  0%  {transform:scale(1);}
  30% {transform:scale(.74);}
  65% {transform:scale(1.16);}
  82% {transform:scale(.95);}
  100%{transform:scale(1);}
}
.graphy-send-springing{animation:send-spring .42s cubic-bezier(.34,1.56,.64,1) both;}

/* ── SEARCH KEYWORD HIGHLIGHT ────────────────────────────────────────────── */
.sq-hl{background:rgba(var(--accent-rgb),.16);border-radius:3px;padding:0 2px;color:var(--accent);}

/* ── BUTTON RIPPLE ───────────────────────────────────────────────────────── */
.nav-btn,.dash-action-btn{position:relative;overflow:hidden;}
@keyframes ripple-out{to{transform:scale(4);opacity:0;}}
.btn-ripple{position:absolute;border-radius:50%;transform:scale(0);
  background:rgba(var(--accent-rgb),.2);pointer-events:none;
  animation:ripple-out .55s cubic-bezier(0,.2,.8,1) forwards;}

/* ── STAGGERED SIDEBAR NAV ENTRANCE ─────────────────────────────────────── */
@keyframes stagger-in{from{opacity:0;transform:translateX(-10px);}to{opacity:1;transform:none;}}
.notes-unit-btn.stagger-anim,.vocab-sidebar-btn.stagger-anim{animation:stagger-in .28s ease both;}

/* ── VOCAB CARD DEFINITION REVEAL ───────────────────────────────────────── */
@keyframes def-reveal{from{opacity:0;transform:translateY(7px);}to{opacity:1;transform:none;}}
.vocab-card.flipped .vocab-card-def    {animation:def-reveal .3s .28s ease both;}
.vocab-card.flipped .vocab-card-example{animation:def-reveal .3s .36s ease both;}

/* ── SCROLL-TO-TOP FAB ───────────────────────────────────────────────────── */
#scroll-top-btn{
  position:fixed;bottom:28px;right:20px;transform:translateY(16px);
  background:var(--bg2);border:1px solid var(--border2);border-radius:8px;
  color:var(--muted);font-family:var(--font-mono);font-size:10px;letter-spacing:1px;
  padding:7px 14px;cursor:pointer;z-index:1800;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;white-space:nowrap;
}
#scroll-top-btn.show{opacity:1;pointer-events:auto;transform:translateY(0);}
#scroll-top-btn:hover{color:var(--accent);border-color:rgba(var(--accent-rgb),.5);background:rgba(var(--accent-rgb),.05);}
@media(max-width:600px){#scroll-top-btn{display:none;}}

/* ── DASHBOARD STAT CARD ENTRANCE ────────────────────────────────────────── */
@keyframes dash-card-in{from{opacity:0;transform:translateY(10px) scale(.96);}to{opacity:1;transform:none;}}
.dash-stat-card.dash-card-anim{animation:dash-card-in .38s ease both;}

/* ── Referral program ──────────────────────────────────────────────────────
   Rendered by referral.js into two hosts (#sp-referral in settings,
   #prf-referral on the owner's profile) plus a body-level share modal.
   Uses the same segmented-meter language as the vocab bar and streak flames
   so the "X of 3 free months" reads as part of the existing progress system. */
.rf-panel{background:var(--bg3);border:1px solid var(--border);border-radius:8px;
  padding:14px 15px;margin:10px 0;font-family:var(--font-body);}
.rf-panel.rf-loading{color:var(--muted);font-size:11px;text-align:center;padding:18px;}
.rf-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;flex-wrap:wrap;}
.rf-title{font-family:var(--font-mono);font-size:10px;letter-spacing:1.5px;
  text-transform:uppercase;color:var(--accent);}
.rf-count{font-family:var(--font-mono);font-size:9px;color:var(--muted);letter-spacing:.5px;}
.rf-meter{display:flex;gap:4px;margin:9px 0 10px;}
.rf-pip{flex:1;height:5px;border-radius:3px;background:rgba(255,255,255,.07);
  transition:background .3s ease,box-shadow .3s ease;}
.rf-pip-on{background:var(--accent3);box-shadow:0 0 8px rgba(245,158,11,.45);}
.rf-blurb{font-size:11.5px;line-height:1.6;color:var(--text);margin:0 0 11px;opacity:.85;}
.rf-blurb strong{color:var(--accent);font-weight:600;}

.rf-code-row{display:flex;align-items:stretch;gap:7px;}
.rf-code{flex:1;font-family:var(--font-mono);font-size:13px;letter-spacing:2.5px;
  color:var(--text);background:rgba(var(--accent-rgb),.05);
  border:1px dashed rgba(var(--accent-rgb),.3);border-radius:5px;
  padding:8px 10px;text-align:center;user-select:all;overflow-x:auto;}
.rf-code-row-lg .rf-code{font-size:16px;padding:11px 12px;}
.rf-copy-btn,.rf-share-btn{font-family:var(--font-mono);font-size:9px;letter-spacing:1.2px;
  background:rgba(var(--accent-rgb),.09);border:1px solid rgba(var(--accent-rgb),.3);
  color:var(--accent);padding:8px 13px;border-radius:5px;cursor:pointer;
  white-space:nowrap;transition:background .15s,border-color .15s;text-decoration:none;
  display:inline-flex;align-items:center;justify-content:center;}
.rf-copy-btn:hover,.rf-share-btn:hover{background:rgba(var(--accent-rgb),.16);
  border-color:rgba(var(--accent-rgb),.5);}
.rf-share-btn{width:100%;margin-top:10px;padding:9px 13px;}

.rf-note{font-size:10.5px;line-height:1.55;color:var(--muted);margin-top:10px;}
.rf-note-cap{color:var(--accent3);opacity:.85;}
.rf-list{list-style:none;margin:11px 0 0;padding:9px 0 0;border-top:1px solid var(--border);}
.rf-list-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:3px 0;}
.rf-list-name{font-size:11px;color:var(--text);opacity:.8;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.rf-badge{font-family:var(--font-mono);font-size:8px;letter-spacing:1px;text-transform:uppercase;
  padding:2px 7px;border-radius:3px;border:1px solid var(--border2);color:var(--muted);white-space:nowrap;}
.rf-badge-rewarded{color:#4ade80;border-color:rgba(74,222,128,.35);background:rgba(74,222,128,.08);}
.rf-badge-pending{color:var(--accent3);border-color:rgba(245,158,11,.3);background:rgba(245,158,11,.07);}

/* Onboarding code field — a prefilled code is confirmation, so mark it as read. */
.rf-input{text-transform:uppercase;letter-spacing:2px;font-family:var(--font-mono)!important;}
.rf-input.rf-input-prefilled{border-color:rgba(var(--accent-rgb),.4)!important;
  background:rgba(var(--accent-rgb),.05)!important;}

/* Share modal */
.rf-modal-overlay{position:fixed;inset:0;z-index:9500;background:rgba(0,0,0,.72);
  backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:20px;}
.rf-modal{position:relative;width:100%;max-width:400px;background:var(--bg2);
  border:1px solid var(--border2);border-radius:12px;padding:26px 24px 22px;text-align:center;
  font-family:var(--font-body);box-shadow:0 20px 60px rgba(0,0,0,.5);}
.rf-modal-close{position:absolute;top:10px;right:12px;background:none;border:none;
  color:var(--muted);font-size:15px;cursor:pointer;line-height:1;padding:4px;}
.rf-modal-close:hover{color:var(--text);}
.rf-modal-icon{font-size:26px;color:var(--accent);margin-bottom:6px;}
.rf-modal-kicker{font-family:var(--font-mono);font-size:9px;letter-spacing:1.5px;
  text-transform:uppercase;color:var(--accent3);margin-bottom:8px;}
.rf-modal-title{font-size:19px;font-weight:700;color:var(--text);letter-spacing:-.3px;margin-bottom:8px;}
.rf-modal-sub{font-size:12px;line-height:1.65;color:var(--muted);margin:0 0 16px;}
.rf-modal-actions{display:flex;gap:8px;margin-top:12px;}
.rf-modal-actions .rf-share-btn{margin-top:0;}

/* Post-signup confirmation that the friend's trial attached */
.rf-welcome{position:fixed;bottom:24px;right:20px;z-index:3200;max-width:330px;
  display:flex;align-items:flex-start;gap:11px;
  background:var(--bg2);border:1px solid rgba(var(--accent-rgb),.35);border-radius:9px;
  padding:13px 15px;font-family:var(--font-body);
  opacity:0;transform:translateY(8px);transition:opacity .3s,transform .3s;}
.rf-welcome.show{opacity:1;transform:translateY(0);}
.rf-welcome-icon{color:var(--accent);font-size:15px;line-height:1.3;}
.rf-welcome-body{display:flex;flex-direction:column;gap:3px;}
.rf-welcome-body strong{font-size:12px;color:var(--text);font-weight:600;}
.rf-welcome-body span{font-size:10.5px;color:var(--muted);line-height:1.5;}
.rf-welcome-close{background:none;border:none;color:var(--muted);cursor:pointer;
  font-size:11px;padding:0 0 0 4px;line-height:1;margin-left:auto;}

/* Profile host: the panel already has its own border, so just space it. */
.prf-referral{width:100%;margin-top:14px;text-align:left;}

@media (max-width:520px){
  .rf-modal{padding:22px 18px 18px;}
  .rf-modal-actions{flex-direction:column;}
  .rf-welcome{left:16px;right:16px;max-width:none;}
}

/* ═══════════════════════════════════════════════════════════════════════════
   GRAPHY — full-page tab (thread sidebar + persistent chat)
   Mirrors the #notes-layout / #notes-sidebar / #notes-main structure so it
   can reuse .sidebar-tab / .sidebar-scroll / .mobile-units-open / .sidebar-mobile-close.
   Message bubbles reuse .graphy-msg / .graphy-welcome (styles injected by graphy.js).
   ═══════════════════════════════════════════════════════════════════════════ */
#view-graphy{position:absolute;inset:0;top:56px;overflow:hidden;}
#graphy-page-layout{
  display:grid;grid-template-columns:240px 1fr;height:100%;
  transition:grid-template-columns 0.3s cubic-bezier(.4,0,.2,1);
}
#graphy-page-layout.sidebar-closed{grid-template-columns:28px 1fr;}
#graphy-page-sidebar.closed .sidebar-scroll{display:none;}
#graphy-page-sidebar{
  background:rgba(8,12,20,0.97);border-right:1px solid rgba(var(--accent-rgb),0.1);
  display:flex;flex-direction:column;position:relative;
}
#graphy-page-sidebar-header{
  padding:16px 16px 10px;border-bottom:1px solid rgba(var(--accent-rgb),0.08);
  flex-shrink:0;display:flex;align-items:center;justify-content:space-between;
}
#graphy-page-new-btn{
  margin:12px 16px;padding:9px 12px;border-radius:8px;cursor:pointer;
  font-family:var(--font-mono);font-size:10px;letter-spacing:1px;
  background:rgba(var(--accent-rgb),0.08);border:1px solid rgba(var(--accent-rgb),0.25);
  color:var(--accent);transition:all 0.15s;flex-shrink:0;
}
#graphy-page-new-btn:hover{background:rgba(var(--accent-rgb),0.16);border-color:var(--accent);}
#graphy-page-thread-list{padding:0 8px 12px;display:flex;flex-direction:column;gap:4px;}
.graphy-page-empty-threads{
  padding:20px 12px;text-align:center;font-family:var(--font-mono);
  font-size:9px;letter-spacing:1px;color:var(--muted);opacity:0.5;
}
.graphy-page-thread{
  padding:9px 10px;border-radius:8px;cursor:pointer;transition:background 0.15s;
  border-left:3px solid transparent;
}
.graphy-page-thread:hover{background:rgba(var(--accent-rgb),0.05);}
.graphy-page-thread.active{background:rgba(var(--accent-rgb),0.08);border-left-color:var(--accent);}
.graphy-page-thread-row{display:flex;align-items:center;gap:6px;margin-bottom:4px;}
.graphy-page-thread-pill{
  font-family:var(--font-mono);font-size:8px;letter-spacing:0.5px;
  padding:2px 6px;border-radius:5px;background:rgba(var(--accent-rgb),0.1);
  color:rgba(var(--accent-rgb),0.75);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:120px;
}
.graphy-page-thread-time{font-family:var(--font-mono);font-size:8px;color:var(--muted);opacity:0.6;flex-shrink:0;}
.graphy-page-thread-del{
  margin-left:auto;background:none;border:none;color:var(--muted);opacity:0;
  cursor:pointer;font-size:10px;padding:2px 4px;flex-shrink:0;transition:opacity 0.15s,color 0.15s;
}
.graphy-page-thread:hover .graphy-page-thread-del{opacity:0.5;}
.graphy-page-thread-del:hover{opacity:1!important;color:#f87171;}
.graphy-page-thread-title{
  font-family:var(--font-body,'Inter',sans-serif);font-size:12px;color:rgba(232,230,224,0.8);
  line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:text;
}
.graphy-page-thread-title-input{
  width:100%;font-family:var(--font-body,'Inter',sans-serif);font-size:12px;
  background:rgba(0,0,0,0.3);border:1px solid rgba(var(--accent-rgb),0.4);border-radius:4px;
  color:var(--text);padding:2px 5px;
}

#graphy-page-main{display:flex;flex-direction:column;min-width:0;min-height:0;height:100%;}
#graphy-page-topbar{padding:12px 16px;border-bottom:1px solid rgba(var(--accent-rgb),0.08);flex-shrink:0;}
#graphy-page-course-select{
  font-family:var(--font-mono);font-size:10px;letter-spacing:0.5px;
  background:rgba(var(--accent-rgb),0.05);border:1px solid rgba(var(--accent-rgb),0.2);
  color:var(--text);padding:6px 10px;border-radius:6px;cursor:pointer;max-width:260px;
}
#graphy-page-course-select:disabled{opacity:0.5;cursor:not-allowed;}
.graphy-skel-msg{max-width:70%;padding:10px 14px;border-radius:14px;background:rgba(var(--accent-rgb),0.05);}
.graphy-skel-msg-user{align-self:flex-end;}
.graphy-skel-thread{padding:9px 10px;}
#graphy-page-messages{
  flex:1;overflow-y:auto;padding:20px 24px;display:flex;flex-direction:column;gap:12px;
}
#graphy-page-messages::-webkit-scrollbar{width:6px;}
#graphy-page-messages::-webkit-scrollbar-thumb{background:rgba(var(--accent-rgb),0.15);border-radius:3px;}
#graphy-page-input-row{
  display:flex;align-items:flex-end;gap:8px;padding:14px 16px;border-top:1px solid rgba(var(--accent-rgb),0.08);flex-shrink:0;
}
#graphy-page-input{
  flex:1;resize:none;max-height:160px;background:rgba(255,255,255,0.03);
  border:1px solid rgba(var(--accent-rgb),0.2);border-radius:8px;color:var(--text);
  font-family:var(--font-body,'Inter',sans-serif);font-size:13px;padding:8px 12px;line-height:1.5;
}
#graphy-page-input:focus{outline:none;border-color:rgba(var(--accent-rgb),0.5);}

/* ── GRAPHY ATTACHMENTS ──────────────────────────────────────────────────────
   Composer wraps the chip row + input row so chips sit directly above the box,
   inside the same top border. */
#graphy-page-composer{
  border-top:1px solid rgba(var(--accent-rgb),0.08);flex-shrink:0;
}
#graphy-page-composer #graphy-page-input-row{border-top:none;}
#graphy-page-chips{display:none;}
#graphy-page-chips.has-chips{
  display:flex;flex-wrap:wrap;gap:6px;padding:10px 16px 0;
}
.graphy-chip{
  display:flex;align-items:center;gap:7px;max-width:230px;
  background:rgba(var(--accent-rgb),0.07);border:1px solid rgba(var(--accent-rgb),0.18);
  border-radius:8px;padding:5px 6px 5px 8px;
}
.graphy-chip.is-error{background:rgba(255,90,90,0.08);border-color:rgba(255,90,90,0.35);}
.graphy-chip.is-reading{opacity:0.75;}
.graphy-chip-icon{font-size:12px;line-height:1;flex-shrink:0;}
.graphy-chip-body{display:flex;flex-direction:column;min-width:0;gap:1px;}
.graphy-chip-name{
  font-size:11.5px;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.graphy-chip-meta{font-size:10px;color:rgba(var(--accent-rgb),0.6);letter-spacing:.2px;}
.graphy-chip.is-error .graphy-chip-meta{color:rgba(255,120,120,0.9);}
.graphy-chip.is-reading .graphy-chip-meta{animation:graphyChipPulse 1.2s ease-in-out infinite;}
@keyframes graphyChipPulse{0%,100%{opacity:0.5;}50%{opacity:1;}}
.graphy-chip-x{
  background:none;border:none;cursor:pointer;color:rgba(var(--accent-rgb),0.55);
  font-size:11px;line-height:1;padding:3px;border-radius:4px;flex-shrink:0;
}
.graphy-chip-x:hover{color:var(--text);background:rgba(var(--accent-rgb),0.12);}

.graphy-attach-btn{
  flex-shrink:0;width:32px;height:32px;border-radius:8px;cursor:pointer;
  background:rgba(var(--accent-rgb),0.07);border:1px solid rgba(var(--accent-rgb),0.2);
  color:rgba(var(--accent-rgb),0.85);font-size:17px;line-height:1;
  display:flex;align-items:center;justify-content:center;
}
.graphy-attach-btn:hover{background:rgba(var(--accent-rgb),0.14);color:var(--text);}

.graphy-count{
  flex-shrink:0;font-size:10px;letter-spacing:.3px;align-self:flex-end;padding-bottom:9px;
  color:rgba(var(--accent-rgb),0.5);font-variant-numeric:tabular-nums;
}
.graphy-count.at-cap{color:#ff7a7a;}

#graphy-page-main.drag-over{outline:2px dashed rgba(var(--accent-rgb),0.5);outline-offset:-6px;}

/* Attach source menu (upload vs library) */
.graphy-attach-menu{
  position:fixed;z-index:900;min-width:210px;display:flex;flex-direction:column;
  background:rgba(10,14,22,0.98);border:1px solid rgba(var(--accent-rgb),0.22);
  border-radius:10px;padding:5px;box-shadow:0 12px 30px rgba(0,0,0,0.45);
}
.graphy-attach-menu button{
  display:flex;flex-direction:column;gap:2px;text-align:left;cursor:pointer;
  background:none;border:none;border-radius:7px;padding:8px 10px;
  color:var(--text);font-family:var(--font-body,'Inter',sans-serif);font-size:12.5px;
}
.graphy-attach-menu button span{font-size:10.5px;color:rgba(var(--accent-rgb),0.6);}
.graphy-attach-menu button:hover{background:rgba(var(--accent-rgb),0.12);}

/* Attachment pills on a sent message */
.graphy-msg-atts{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:6px;}
.graphy-msg-att{
  display:inline-flex;align-items:center;gap:5px;
  background:rgba(var(--accent-rgb),0.1);border:1px solid rgba(var(--accent-rgb),0.2);
  border-radius:6px;padding:3px 6px;font-size:10.5px;max-width:200px;
}
.graphy-msg-att-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.graphy-msg-att-re{
  background:none;border:none;cursor:pointer;padding:0 1px;line-height:1;
  color:rgba(var(--accent-rgb),0.6);font-size:11px;
}
.graphy-msg-att-re:hover{color:var(--text);}
.graphy-msg-att-re.loading{opacity:0.5;cursor:progress;}
.graphy-msg-att-re.queued{color:#7ee08a;}

/* Library picker */
.graphy-attach-picker-overlay{
  position:fixed;inset:0;z-index:950;background:rgba(0,0,0,0.55);
  display:flex;align-items:center;justify-content:center;padding:20px;
}
.graphy-attach-picker{
  width:min(440px,100%);max-height:70vh;display:flex;flex-direction:column;
  background:rgba(10,14,22,0.99);border:1px solid rgba(var(--accent-rgb),0.22);
  border-radius:12px;overflow:hidden;
}
.gap-head{
  display:flex;align-items:center;justify-content:space-between;padding:12px 14px;
  font-family:'Syne',sans-serif;font-size:11px;letter-spacing:1px;
  color:rgba(var(--accent-rgb),0.8);border-bottom:1px solid rgba(var(--accent-rgb),0.12);
}
.gap-close{background:none;border:none;color:rgba(var(--accent-rgb),0.6);cursor:pointer;font-size:12px;}
.gap-close:hover{color:var(--text);}
.gap-tabs{display:flex;gap:6px;padding:10px 14px 0;}
.gap-tab{
  background:none;border:1px solid rgba(var(--accent-rgb),0.18);border-radius:7px;
  padding:5px 12px;cursor:pointer;color:rgba(var(--accent-rgb),0.7);font-size:11.5px;
}
.gap-tab.active{background:rgba(var(--accent-rgb),0.15);color:var(--text);}
.gap-scope{
  display:flex;align-items:center;gap:6px;padding:9px 14px 4px;
  font-size:11px;color:rgba(var(--accent-rgb),0.6);cursor:pointer;
}
.gap-list{flex:1;overflow-y:auto;padding:6px 10px 12px;display:flex;flex-direction:column;gap:4px;}
.gap-item{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  background:none;border:1px solid transparent;border-radius:8px;padding:9px 10px;
  cursor:pointer;color:var(--text);font-size:12.5px;text-align:left;width:100%;
}
.gap-item:hover{background:rgba(var(--accent-rgb),0.1);border-color:rgba(var(--accent-rgb),0.2);}
.gap-item.loading{opacity:0.5;cursor:progress;}
.gap-item-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.gap-item-meta{flex-shrink:0;font-size:10px;color:rgba(var(--accent-rgb),0.5);}
.gap-empty{padding:20px 10px;text-align:center;font-size:12px;color:rgba(var(--accent-rgb),0.5);}

#graphy-page-gate{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  height:100%;gap:10px;text-align:center;padding:0 20px;
}
#graphy-page-gate h2{font-family:'Syne',sans-serif;font-size:18px;color:var(--text);margin:0;}
#graphy-page-gate .graphy-welcome-icon{font-size:32px;color:rgba(var(--accent-rgb),0.3);}
#graphy-page-gate .graphy-welcome-sub{max-width:320px;}

.graphy-typing-dots{display:inline-flex;gap:4px;padding:2px 0;}
.graphy-typing-dots span{
  width:5px;height:5px;border-radius:50%;background:rgba(var(--accent-rgb),0.5);
  animation:graphyTypingDot 1.1s infinite ease-in-out;
}
.graphy-typing-dots span:nth-child(2){animation-delay:0.15s;}
.graphy-typing-dots span:nth-child(3){animation-delay:0.3s;}
@keyframes graphyTypingDot{0%,80%,100%{opacity:0.25;transform:scale(0.8);}40%{opacity:1;transform:scale(1);}}

[data-theme="light"] #graphy-page-sidebar{background:var(--bg2)!important;}
[data-theme="light"] #graphy-page-input{background:rgba(0,0,0,0.03)!important;}
[data-theme="light"] .graphy-page-thread-title{color:var(--text)!important;}
[data-theme="light"] .graphy-page-thread.active{background:rgba(var(--accent-rgb),0.1)!important;}
[data-theme="light"] .graphy-attach-menu,
[data-theme="light"] .graphy-attach-picker{background:var(--bg2)!important;}
[data-theme="light"] .graphy-chip{background:rgba(0,0,0,0.04)!important;}

@media (max-width:700px){
  #graphy-page-layout{grid-template-columns:1fr;}
  #graphy-page-sidebar{
    display:flex!important;position:fixed!important;top:52px;left:0;bottom:0;
    width:260px;z-index:600;background:rgba(8,12,20,0.99);overflow:hidden;
    transform:translateX(-100%);transition:transform 0.28s cubic-bezier(.4,0,.2,1);
  }
  #graphy-page-sidebar.mobile-open{transform:translateX(0);box-shadow:4px 0 24px rgba(0,0,0,0.5);}
  #graphy-page-sidebar .sidebar-scroll{overflow-y:auto;}
  #graphy-page-sidebar-header{padding-right:12px;}
  #graphy-page-main>.mobile-units-open{margin:10px 16px 0;}
  #graphy-page-messages{padding:14px 16px;}
  #graphy-page-topbar{padding:10px 16px;}
  #graphy-page-course-select{max-width:100%;width:100%;}
}