*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#080c10;--bg2:#0d1117;--bg3:#111820;
  --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;
  --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;}

/* ── 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(0,229,255,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(0,229,255,0.025) 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(0,229,255,0.12),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{position:fixed;top:0;left:0;right:0;z-index:200;height:var(--header);
  border-bottom:1px solid var(--border);background:rgba(8,12,16,0.95);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:flex;gap:3px;margin-left:auto;}
.nav-btn{font-family:var(--font-mono);font-size:9px;letter-spacing:1.5px;background:none;border:1px solid transparent;
  color:var(--muted);padding:5px 12px;border-radius:2px;cursor:pointer;transition:all .15s;}
.nav-btn:hover{color:var(--text);border-color:var(--border2);}
.nav-btn.active{color:var(--accent);border-color:var(--accent);background:rgba(0,229,255,0.06);}
.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;}
.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(0,229,255,0.25)!important;color:rgba(0,229,255,0.6)!important;}
.auth-nav-btn.signed-in{color:var(--accent)!important;border-color:var(--accent)!important;background:rgba(0,229,255,0.08)!important;}
#auth-menu{position:absolute;top:calc(100% + 6px);right:0;background:rgba(13,17,23,0.98);
  border:1px solid var(--border2);border-radius:3px;padding:4px;z-index:500;min-width:120px;
  box-shadow:0 8px 24px rgba(0,0,0,0.5);}
#auth-signout{width:100%;background:none;border:none;color:var(--muted);font-family:var(--font-mono);
  font-size:9px;letter-spacing:1.5px;padding:8px 12px;cursor:pointer;text-align:left;border-radius:2px;}
#auth-signout:hover{background:rgba(255,80,80,0.08);color:#ff5050;}

/* ── AUTH MODAL ──────────────────────────────────────────────────────────── */
#auth-modal-overlay{position:fixed;inset:0;z-index:900;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:901;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(0,229,255,0.5);}
.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(0,229,255,0.8);}
.auth-submit-btn{background:rgba(0,229,255,0.12);border:1px solid rgba(0,229,255,0.4);
  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(0,229,255,0.2);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);}

/* ── 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(0,229,255,0.25);background:rgba(0,229,255,0.06);color:rgba(0,229,255,0.7);
  border-radius:2px;cursor:pointer;transition:all .15s;white-space:nowrap;}
.vc-action-btn:hover{background:rgba(0,229,255,0.12);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:800;background:rgba(0,0,0,0.5);
  opacity:0;pointer-events:none;transition:opacity .25s;}
#settings-overlay.open{opacity:1;pointer-events:auto;}
#settings-panel{position:fixed;top:0;right:0;bottom:0;width:300px;z-index:801;
  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.open{transform:translateX(0);}
.sp-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;
  border-bottom:1px solid var(--border);flex-shrink:0;height:var(--header);}
.sp-title{font-family:var(--font-mono);font-size:10px;letter-spacing:3px;color:var(--accent);}
#sp-close{background:none;border:none;color:var(--muted);font-size:14px;cursor:pointer;padding:4px 6px;line-height:1;}
#sp-close:hover{color:var(--text);}
.sp-body{flex:1;overflow-y:auto;padding:8px 0;}
.sp-body::-webkit-scrollbar{width:4px;}
.sp-body::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px;}
.sp-section{padding:16px 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:3px;color:var(--muted);margin-bottom:12px;}
.sp-email{font-family:var(--font-body);font-size:12px;color:var(--text);margin-bottom:10px;word-break:break-all;}
.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:2px;padding:8px 14px;border-radius:2px;
  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(255,80,80,0.08);border:1px solid rgba(255,80,80,0.25);color:#ff6060;
  font-family:var(--font-mono);font-size:8px;letter-spacing:2px;padding:7px 12px;border-radius:2px;cursor:pointer;}
.sp-danger-btn:hover{background:rgba(255,80,80,0.15);border-color:rgba(255,80,80,0.5);}
.sp-login-btn{background:rgba(0,229,255,0.06);border:1px solid rgba(0,229,255,0.2);color:rgba(0,229,255,0.7);
  font-family:var(--font-body);font-size:12px;padding:8px 12px;border-radius:2px;cursor:pointer;text-align:left;}
.sp-login-btn:hover{background:rgba(0,229,255,0.1);color:var(--accent);}
.sp-tier-badge{font-family:var(--font-mono);font-size:8px;letter-spacing:2px;padding:3px 8px;border-radius:2px;border:1px solid;}
.sp-tier-badge[data-tier="free"]{color:rgba(255,255,255,0.4);border-color:rgba(255,255,255,0.12);background:rgba(255,255,255,0.04);}
.sp-tier-badge[data-tier="pro"]{color:#f59e0b;border-color:rgba(245,158,11,0.4);background:rgba(245,158,11,0.1);}
.sp-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.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:2px;
  color:var(--text);font-family:var(--font-mono);font-size:10px;padding:5px 8px;outline:none;}
.sp-date-input:focus{border-color:rgba(0,229,255,0.4);}
.sp-days-display{font-family:var(--font-mono);font-size:9px;color:var(--accent);letter-spacing:1px;
  margin-top:-6px;margin-bottom:4px;opacity:0.7;}
.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:5px 9px;border-radius:2px;cursor:pointer;}
.sp-seg-btn:hover{color:var(--text);}
.sp-seg-btn.active{background:rgba(0,229,255,0.1);border-color:var(--accent);color:var(--accent);}
.sp-swatches{display:flex;gap:7px;align-items:center;}
.sp-swatch{width:20px;height:20px;border-radius:50%;border:2px solid transparent;cursor:pointer;
  transition:transform .15s,border-color .15s;flex-shrink:0;}
.sp-swatch:hover{transform:scale(1.15);}
.sp-swatch.active{border-color:#fff;transform:scale(1.1);}
.sp-switch{position:relative;display:inline-block;width:36px;height:20px;flex-shrink:0;}
.sp-switch input{opacity:0;width:0;height:0;}
.sp-switch-track{position:absolute;inset:0;background:var(--bg3);border-radius:20px;
  border:1px solid var(--border2);cursor:pointer;transition:background .2s;}
.sp-switch-track::after{content:'';position:absolute;width:14px;height:14px;left:2px;top:2px;
  background:var(--muted);border-radius:50%;transition:transform .2s,background .2s;}
.sp-switch input:checked + .sp-switch-track{background:rgba(0,229,255,0.15);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:6px;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(255,255,255,0.08);}

/* ── 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;}

/* ── 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(255,255,255,0.12);transition:box-shadow .2s,border-color .2s;touch-action:none;
}
.unit-bubble:hover{border-color:rgba(255,255,255,0.3);}
.unit-bubble.active-unit{border-color:rgba(255,255,255,0.5);box-shadow:0 0 0 3px rgba(255,255,255,0.08);}
.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(255,255,255,0.14);touch-action:none;
}
.sub-bubble:hover{border-color:rgba(255,255,255,0.3);}

/* ── 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);}

/* ── SUB-SUB (level-3) NODES ─────────────────────────────────────────────── */
.subsub-node{
  position:absolute;white-space:nowrap;
  font-family:var(--font-mono);font-size:8px;letter-spacing:.8px;
  padding:3px 8px;border-radius:2px;border:1px solid;
  background:rgba(8,12,16,0.92);cursor:pointer;user-select:none;
  transition:opacity .15s;
}
.subsub-node:hover{opacity:0.72;}

/* ── 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:6px;
  padding:10px 6px;display:flex;flex-direction:column;align-items:center;gap:4px;
  z-index:50;backdrop-filter:blur(8px);
}
.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:3px;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(255,255,255,0.04);}
.tool-btn.active{color:var(--accent);border-color:var(--accent);background:rgba(0,229,255,0.08);}
.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-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(0,229,255,0.08);}
.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;
  width:100%;
  height:100%;
}
#map-container svg{
  display:block;
  /* no position/inset here — JS controls SVG placement */
}
#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(0,229,255,0.4);
}
#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-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:none;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:auto;
}
#nav-hamburger span{
  display:block;width:16px;height:1.5px;background:var(--muted);border-radius:1px;
  transition:all .2s;
}

/* ── MOBILE / TABLET (≤768px) ────────────────────────────────────────────── */
@media(max-width:768px){
  #nav-hamburger{display:flex;}
  .exam-counter{display:none;}
  nav{
    display:none;position:fixed;top:var(--header);left:0;right:0;
    background:rgba(8,12,16,0.98);border-bottom:1px solid var(--border2);
    padding:8px;flex-direction:column;gap:2px;z-index:199;backdrop-filter:blur(12px);
  }
  header.nav-open nav{display:flex;}
  .nav-btn{padding:12px 16px;font-size:10px;text-align:left;min-height:44px;border-radius:3px;}
  #auth-btn-wrap{margin-left:8px;}
  #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);}
}

/* ── SMALL MOBILE (≤600px) ──────────────────────────────────────────────── */
@media(max-width:600px){
  #auth-modal{width:calc(100vw - 32px);padding:24px 20px;}
  .auth-input{font-size:16px;}
  .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(0,229,255,0.6);text-align:center;padding:32px;
}
#rotate-notice .rn-icon{font-size:40px;display:block;margin-bottom:8px;}
@media(orientation:landscape)and(max-width:900px){
  #rotate-notice{display:flex;}
}