:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --text: #1f2933;
  --muted: #6b7785;
  --border: #dde3ea;
  --accent: #0e7c86;
  --ok: #1f9d55;
  --warn: #c27c0e;
  --err: #c53030;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11161c;
    --panel: #1a2129;
    --text: #e3e8ee;
    --muted: #8d99a6;
    --border: #2c3640;
    --accent: #3cc3cd;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; }

.topbar { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; padding: 12px 20px; background: var(--panel); border-bottom: 1px solid var(--border); }
.brand { font-size: 20px; font-weight: 700; color: var(--accent); }
.brand span { font-size: 14px; color: var(--muted); font-weight: 400; margin-left: 8px; }
.controls { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
select, input, button { font: inherit; color: inherit; background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 4px 8px; }
button { cursor: pointer; background: var(--accent); color: #fff; border: none; padding: 6px 14px; }
button:disabled { opacity: .45; cursor: default; }
.pill { padding: 2px 10px; border-radius: 999px; background: var(--border); font-size: 12px; }
.pill.ok { background: var(--ok); color: #fff; }
.pill.warn { background: var(--warn); color: #fff; }
.pill.err { background: var(--err); color: #fff; }

.disclaimer { background: #fff3cd; color: #7a5b00; text-align: center; padding: 6px; font-size: 13px; }
@media (prefers-color-scheme: dark) { .disclaimer { background: #3a2f0b; color: #f3d37a; } }

.tabs { display: flex; gap: 4px; padding: 12px 0 0; overflow-x: auto; }
.tab[hidden] { display: none; }
.tab { background: transparent; color: var(--muted); border-radius: 6px 6px 0 0; border-bottom: 2px solid transparent; }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

main { padding: 0 20px 20px; }
.panel { display: none; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
.panel.active { display: block; }

.toolbar { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 14px; }
.file-btn { background: var(--accent); color: #fff; padding: 6px 14px; border-radius: 6px; cursor: pointer; }
.file-btn input { display: none; }
.slider { display: inline-flex; align-items: center; gap: 6px; }
.slider b { min-width: 34px; display: inline-block; }
.dicom-opts summary { cursor: pointer; color: var(--muted); }
.dicom-opts input { width: 80px; }

.workspace { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; align-items: start; }
@media (max-width: 900px) { .workspace { grid-template-columns: 1fr; } }
.canvas-wrap { position: relative; min-height: 360px; background: #0b0f14; border-radius: 8px; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.canvas-wrap.drag { outline: 3px dashed var(--accent); }
.canvas-wrap canvas { max-width: 100%; max-height: 75vh; }
.placeholder { position: absolute; color: #8d99a6; }

.video-wrap video, .video-wrap canvas { width: 100%; max-height: 75vh; object-fit: contain; }
.video-wrap canvas { position: absolute; inset: 0; height: 100%; pointer-events: none; }
.hud { position: absolute; top: 8px; left: 8px; background: rgba(0, 0, 0, .6); color: #7fffd4; font: 13px monospace; padding: 4px 8px; border-radius: 4px; }

.side h3 { margin: 0 0 8px; }
.side small, .compare small { color: var(--muted); font-weight: 400; }
.timing { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.timing b { color: var(--text); }
.err-text { color: var(--err); }
.hint { color: var(--muted); font-size: 13px; }

.result-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 8px; }
.result-table th, .result-table td { border-bottom: 1px solid var(--border); padding: 4px 6px; text-align: left; }
.result-table tbody { display: table-row-group; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .compare { grid-template-columns: 1fr; } }
.compare canvas { width: 100%; background: #0b0f14; border-radius: 8px; min-height: 200px; }
.compare-table { max-width: 480px; }

.card { border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; margin-bottom: 14px; }
.card h3 { margin-top: 0; color: var(--accent); }
.kpis { display: flex; flex-wrap: wrap; gap: 12px; }
.kpis div { background: var(--bg); border-radius: 6px; padding: 8px 14px; min-width: 110px; }
.kpis span { display: block; color: var(--muted); font-size: 12px; }
.kpis b { font-size: 20px; }
.note { margin-top: 12px; }

footer { text-align: center; color: var(--muted); font-size: 12px; padding: 16px; }

/* ---------- imaging menu: one menu = one model ---------- */
.menu { display: flex; gap: 8px; padding: 12px 20px; overflow-x: auto; background: var(--panel); border-bottom: 1px solid var(--border); }
.menu-item { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 999px; padding: 6px 16px; }
.menu-item .icon { font-size: 16px; }
.menu-item.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.badge { font-size: 11px; background: var(--warn); color: #fff; border-radius: 999px; padding: 0 6px; }

.modality-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 16px; padding: 16px 0 0; align-items: start; }
@media (max-width: 900px) { .modality-head { grid-template-columns: 1fr; } }
.modality-head h2 { margin: 0 0 6px; }
.modality-head p { margin: 0; color: var(--muted); }
.model-card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; display: grid; gap: 8px; }
.model-card .model-desc { font-weight: 600; }
.model-card .kpis div { padding: 4px 12px; min-width: 90px; }
.model-card .kpis b { font-size: 17px; }
.model-card a { color: var(--accent); }
.missing { color: var(--warn); }
.missing p { margin: 4px 0 0; color: var(--muted); }
code { background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; font-size: 12px; }

/* ---------- sample gallery ---------- */
.gallery { display: flex; gap: 10px; overflow-x: auto; padding-bottom: 6px; margin-bottom: 12px; }
.thumb { flex: 0 0 132px; display: flex; flex-direction: column; gap: 4px; padding: 4px; background: var(--bg); color: var(--text); border: 2px solid transparent; border-radius: 8px; cursor: pointer; text-align: left; }
.thumb img { width: 100%; height: 88px; object-fit: cover; border-radius: 4px; background: #0b0f14; }
.thumb span { font-size: 12px; line-height: 1.3; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.thumb.active { border-color: var(--accent); }
.thumb.local { border: 2px dashed var(--border); align-items: center; justify-content: center; }
.thumb.local input { display: none; }
.thumb.local .plus { font-size: 30px; color: var(--accent); line-height: 1; }
.chips { display: inline-flex; flex-wrap: wrap; gap: 8px; }
.chip { background: var(--bg); color: var(--text); border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; }
.chip.active { background: var(--accent); color: #fff; border-color: var(--accent); }
#sampleCaption small, #videoCaption small { color: var(--muted); }
.menu-sep { flex: 0 0 1px; align-self: stretch; background: var(--border); margin: 0 6px; }
#subTabs[hidden] { display: none; }