:root {
  --ink: #141C2A;
  --ink-2: #1D2838;
  --ink-3: #2A3749;
  --line: rgba(255, 255, 255, 0.09);
  --text: #E8ECF2;
  --muted: #98A4B8;
  --gold: #E3B341;
  --gold-deep: #B8861B;
  --teal: #3ED2C0;
  --rose: #F26D6D;
  --paper: #F7F8F6;
  --display: "Bricolage Grotesque", "IBM Plex Sans", system-ui, sans-serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  --sidebar-w: 400px;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body { font-family: var(--body); font-size: 14px; color: var(--text); background: var(--ink); line-height: 1.45; }
button, input, select { font: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, .tab:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

#app { display: grid; grid-template-columns: var(--sidebar-w) 1fr; height: 100%; }

/* ----- Sidebar ----- */
#sidebar { display: flex; flex-direction: column; background: var(--ink); border-right: 1px solid var(--line); min-height: 0; }
.brand { padding: 18px 20px 12px; }
.brand-title { font-family: var(--display); font-weight: 700; font-size: 26px; letter-spacing: -0.02em; line-height: 1; }
.brand-sub { color: var(--muted); font-size: 12.5px; margin-top: 6px; font-family: var(--mono); }

.tabs { display: flex; gap: 0; padding: 0 10px; border-bottom: 1px solid var(--line); }
.tab { background: none; border: 0; color: var(--muted); padding: 10px 8px 9px; font-size: 13px; white-space: nowrap; cursor: pointer; border-bottom: 2px solid transparent; font-weight: 500; display: flex; gap: 6px; align-items: center; }
.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--gold); }
.badge { background: var(--gold); color: var(--ink); font-family: var(--mono); font-size: 11px; padding: 0 6px; border-radius: 10px; line-height: 17px; }

.panel { display: none; padding: 16px 20px; overflow-y: auto; flex: 1; min-height: 0; }
.panel.active { display: block; }
.eyebrow { font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); margin: 22px 0 8px; font-weight: 500; }
.panel > .eyebrow:first-child, .stat-row + .eyebrow { margin-top: 0; }
.stat-row + .eyebrow { margin-top: 20px; }
.help { color: var(--muted); font-size: 13px; margin: 0 0 12px; }

.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.stat { background: var(--ink-2); border-radius: 8px; padding: 10px 12px; }
.stat .n { font-family: var(--display); font-weight: 700; font-size: 23px; line-height: 1; letter-spacing: -0.02em; }
.stat .l { color: var(--muted); font-size: 12px; margin-top: 4px; }
.stat.warn .n { color: var(--gold); }

/* Reach ladder: three rings per campus */
.ladder { background: var(--ink-2); border-radius: 8px; padding: 12px 14px; margin-bottom: 8px; }
.ladder-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.ladder-name { font-family: var(--display); font-weight: 700; font-size: 17px; }
.ladder-total { font-family: var(--mono); font-size: 12px; color: var(--muted); }
.rung { display: grid; grid-template-columns: 44px 1fr 44px; align-items: center; gap: 10px; margin: 5px 0; font-family: var(--mono); font-size: 12px; }
.rung .r { color: var(--muted); }
.rung .bar { height: 10px; background: var(--ink-3); border-radius: 5px; overflow: hidden; }
.rung .bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--gold-deep), var(--gold)); }
.rung .v { text-align: right; }
.ladder-note { color: var(--muted); font-size: 12px; margin-top: 6px; }

.rank-list { display: flex; flex-direction: column; gap: 3px; }
.rank { display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 4px 0; border-bottom: 1px solid var(--line); font-size: 13px; cursor: pointer; }
.rank:hover { color: var(--gold); }
.rank .n { font-family: var(--mono); color: var(--muted); }

.toolbar { display: flex; gap: 8px; margin-bottom: 12px; }
.toolbar input, .toolbar select { flex: 1; min-width: 0; background: var(--ink-2); border: 1px solid var(--line); color: var(--text); padding: 8px 10px; border-radius: 6px; }
.toolbar select { flex: 0 0 auto; }

.list { display: flex; flex-direction: column; gap: 6px; }
.card { background: var(--ink-2); border-radius: 8px; padding: 10px 12px; cursor: pointer; border: 1px solid transparent; }
.card:hover { border-color: var(--ink-3); }
.card.active { border-color: var(--gold); }
.card-title { font-weight: 600; display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.card-sub { color: var(--muted); font-size: 12.5px; }
.card-meta { font-family: var(--mono); font-size: 11.5px; color: var(--muted); margin-top: 4px; display: flex; gap: 10px; flex-wrap: wrap; }
.card-meta .warn { color: var(--gold); }
.card-meta .bad { color: var(--rose); }
.card-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.pill { font-family: var(--mono); font-size: 11px; padding: 2px 7px; border-radius: 10px; background: var(--ink-3); color: var(--muted); }
.pill.gold { background: rgba(227, 179, 65, 0.18); color: var(--gold); }
.pill.teal { background: rgba(62, 210, 192, 0.16); color: var(--teal); }
.pill.rose { background: rgba(242, 109, 109, 0.16); color: var(--rose); }

.btn { background: var(--ink-3); color: var(--text); border: 1px solid var(--line); border-radius: 6px; padding: 7px 12px; cursor: pointer; font-size: 13px; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--gold); color: var(--ink); border-color: var(--gold); font-weight: 600; }
.btn.primary:hover { background: #F0C455; }
.btn.small { padding: 3px 9px; font-size: 12px; }
.btn.danger { color: var(--rose); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

.suggest { display: flex; flex-direction: column; gap: 5px; margin-top: 8px; }
.suggest .btn { text-align: left; display: flex; flex-direction: column; gap: 1px; }
.suggest .btn small { color: var(--muted); font-family: var(--mono); font-size: 11px; }
.bulk { margin-bottom: 12px; }
.pick { position: relative; margin-top: 8px; }
.pick input { width: 100%; background: var(--ink); border: 1px solid var(--line); color: var(--text); padding: 7px 10px; border-radius: 6px; }
.pick-results { position: absolute; left: 0; right: 0; top: 100%; z-index: 5; background: var(--ink-3); border: 1px solid var(--line); border-radius: 6px; max-height: 200px; overflow-y: auto; }
.pick-results button { display: block; width: 100%; text-align: left; background: none; border: 0; color: var(--text); padding: 7px 10px; cursor: pointer; }
.pick-results button:hover { background: var(--ink-2); }
.pick-results small { color: var(--muted); display: block; font-size: 11.5px; }

.file-drop { display: block; border: 1px dashed var(--muted); border-radius: 8px; padding: 22px; text-align: center; cursor: pointer; color: var(--muted); margin-bottom: 10px; }
.file-drop:hover, .file-drop.over { border-color: var(--gold); color: var(--text); }
.file-drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.kv { font-family: var(--mono); font-size: 12px; display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; }
.kv b { color: var(--muted); font-weight: 400; }
.result { margin-top: 12px; background: var(--ink-2); padding: 10px 12px; border-radius: 8px; font-size: 13px; }
.result.err { border-left: 3px solid var(--rose); }
.result.ok { border-left: 3px solid var(--teal); }

.foot { padding: 8px 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11.5px; font-family: var(--mono); }

/* ----- Map ----- */
#map-wrap { position: relative; min-width: 0; }
#map { position: absolute; inset: 0; background: var(--paper); }
.layer-bar { position: absolute; top: 12px; left: 12px; right: 12px; z-index: 500; display: flex; gap: 6px; flex-wrap: wrap; pointer-events: none; }
.chip, .chip-select { pointer-events: auto; background: rgba(20, 28, 42, 0.92); color: var(--text); border-radius: 20px; padding: 5px 11px; font-size: 12.5px; display: flex; align-items: center; gap: 6px; border: 1px solid transparent; backdrop-filter: blur(4px); }
.chip input { accent-color: var(--gold); margin: 0; }
.chip-select { border-radius: 8px; }
.chip-select:disabled { opacity: 0.5; }
.legend { position: absolute; bottom: 24px; right: 12px; z-index: 500; background: rgba(20, 28, 42, 0.92); color: var(--text); padding: 8px 10px; border-radius: 8px; font-size: 11.5px; font-family: var(--mono); }
.legend .ramp { height: 8px; width: 160px; border-radius: 4px; margin: 4px 0; }
.legend .ends { display: flex; justify-content: space-between; color: var(--muted); }
.pin-banner { position: absolute; top: 56px; left: 50%; transform: translateX(-50%); z-index: 600; background: var(--gold); color: var(--ink); padding: 8px 14px; border-radius: 8px; display: flex; gap: 12px; align-items: center; font-weight: 500; }
.toast { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 700; background: var(--ink-2); color: var(--text); padding: 9px 14px; border-radius: 8px; border: 1px solid var(--line); font-size: 13px; }
.toast.err { border-color: var(--rose); }

.campus-icon { background: var(--teal); color: var(--ink); font-family: var(--display); font-weight: 700; font-size: 12px; border-radius: 6px; padding: 3px 7px; white-space: nowrap; box-shadow: 0 1px 4px rgba(0,0,0,0.35); transform: translate(-50%, -50%); width: auto !important; height: auto !important; }
.leaflet-popup-content-wrapper { font-family: var(--body); font-size: 13px; border-radius: 8px; }
.leaflet-popup-content { margin: 12px 14px; }
.popup-title { font-family: var(--display); font-weight: 700; font-size: 16px; margin-bottom: 2px; }
.popup-sub { color: #667; font-size: 12px; margin-bottom: 6px; }
.popup ul { margin: 4px 0 0; padding-left: 16px; }
.popup .tag { font-family: var(--mono); font-size: 10.5px; color: #667; }
.popup .detach { background: none; border: 0; color: #B8861B; cursor: pointer; font-size: 11px; padding: 0 4px; }
.tract-tip { font-family: var(--body); font-size: 12.5px; }
.tract-tip b { font-family: var(--display); font-size: 14px; display: block; margin-bottom: 2px; }
.tract-tip .row { display: flex; justify-content: space-between; gap: 14px; font-family: var(--mono); font-size: 11.5px; }

@media (max-width: 860px) {
  #app { grid-template-columns: 1fr; grid-template-rows: 1fr 46vh; }
  #sidebar { order: 2; border-right: 0; border-top: 1px solid var(--line); }
  #map-wrap { order: 1; }
  :root { --sidebar-w: 100%; }
  .stat-row { grid-template-columns: repeat(3, 1fr); }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }