:root{--bg: #f4f6f8;--surface: #ffffff;--text: #1b1f24;--muted: #6b7280;--border: #e2e8f0;--free: #16a34a;--free-bg: #dcfce7;--occ: #dc2626;--occ-bg: #fee2e2;--unknown: #6b7280;--unknown-bg: #e5e7eb;--accent: #2563eb;--radius: 12px;--shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .04)}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.app{max-width:1080px;margin:0 auto;padding:32px 20px 64px}.header{margin-bottom:28px}.brand{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}.logo{font-size:28px;color:var(--accent)}h1{font-size:30px;margin:0;letter-spacing:-.02em}.tagline{color:var(--muted);margin:0 0 0 auto;font-weight:600}.blurb{color:var(--muted);max-width:60ch;margin:10px 0 20px}.controls{display:flex;gap:20px;flex-wrap:wrap}.controls label{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em}.controls select{padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--surface);font-size:14px;color:var(--text)}.banner{border-radius:10px;padding:12px 16px;margin-bottom:20px;font-size:14px}.banner-error{background:var(--occ-bg);color:var(--occ);border:1px solid #fca5a5}.empty{background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius);padding:40px;text-align:center;color:var(--muted)}.empty code{background:var(--unknown-bg);padding:2px 6px;border-radius:4px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px;border-top:3px solid var(--unknown)}.card.room-free{border-top-color:var(--free)}.card.room-occupied{border-top-color:var(--occ)}.card.room-unknown{border-top-color:var(--unknown)}.card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}.card-head h3{margin:0;font-size:17px}.meta{margin:2px 0 0;color:var(--muted);font-size:13px}.badge{border-radius:999px;padding:4px 10px;font-size:12px;font-weight:700;white-space:nowrap}.badge-free{background:var(--free-bg);color:var(--free)}.badge-occupied{background:var(--occ-bg);color:var(--occ)}.badge-unknown{background:var(--unknown-bg);color:var(--unknown)}.badge-stale{opacity:.7}.caution{font-weight:600;opacity:.85}.confidence{margin:0}.conf-bar{height:6px;background:var(--unknown-bg);border-radius:999px;overflow:hidden}.conf-fill{height:100%;background:var(--accent);transition:width .3s ease}.confidence p{margin:6px 0 0;font-size:12px;color:var(--text)}.confidence.muted{font-size:12px;margin:0}.updated{margin:0;font-size:12px;color:var(--muted)}.report{margin-top:auto;border-top:1px solid var(--border);padding-top:12px}.report-label{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}.report-btns{display:flex;gap:8px}.btn{flex:1;padding:9px 10px;border-radius:8px;border:1px solid transparent;font-size:14px;font-weight:700;cursor:pointer;transition:filter .15s,opacity .15s}.btn:disabled{opacity:.45;cursor:not-allowed}.btn:not(:disabled):hover{filter:brightness(.96)}.btn-free{background:var(--free);color:#fff}.btn-occ{background:var(--occ);color:#fff}.wait{margin:8px 0 0;font-size:12px;color:var(--muted)}.footnote{margin-top:28px;color:var(--muted);font-size:12px;text-align:center}@media (prefers-color-scheme: dark){:root{--bg: #0f1115;--surface: #171a21;--text: #e6e9ef;--muted: #9aa3af;--border: #262b36;--free-bg: #12351f;--occ-bg: #3a1418;--unknown-bg: #262b36;--shadow: 0 1px 3px rgba(0, 0, 0, .4)}}