:root {
  --panel: rgba(18, 22, 30, 0.72);
  --text: #e8ebf0;
  --muted: #9aa3b2;
  --accent: #f0a85a;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: #9fb0c4; color: var(--text);
  font: 14px/1.45 ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif; }
#view { position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
#view:active { cursor: grabbing; }
#loading { position: fixed; inset: 0; display: grid; place-items: center; padding: 16px; text-align: center;
  font-size: 15px; color: #1d2430; }
#panel { position: fixed; top: 16px; left: 16px; width: 300px; max-height: calc(100% - 32px); overflow: auto;
  padding: 16px 18px; border-radius: 14px; background: var(--panel); backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px); box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25); }
h1 { margin: 0 0 4px; font-size: 17px; letter-spacing: 0.01em; }
.lede { margin: 0 0 12px; color: var(--muted); font-size: 13px; }
dl { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; margin: 0 0 14px; }
dt { color: var(--muted); }
dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; }
dd small { display: block; color: var(--muted); font-size: 11px; }
#frame { color: var(--accent); font-weight: 600; }
label { display: block; margin: 10px 0 0; color: var(--muted); font-size: 13px; }
label span { float: right; color: var(--text); font-variant-numeric: tabular-nums; }
input[type=range], select { display: block; width: 100%; margin-top: 4px; accent-color: var(--accent); }
select { padding: 4px 6px; border-radius: 6px; border: 1px solid #3a4250; background: #1b212b; color: var(--text); }
label.check { color: var(--text); }
label.check input { accent-color: var(--accent); margin-right: 6px; vertical-align: -2px; }
.help { margin: 12px 0 0; color: var(--muted); font-size: 12px; }
a { color: var(--accent); }
@media (max-width: 640px) {
  #panel { top: auto; bottom: 16px; left: 16px; right: 16px; width: auto; max-height: 45%; }
}

/* the fallback (app.js): frames from the native viewer instead of the demo. */
body.fallback { height: auto; background: #10141b; }
#fallback { max-width: 880px; margin: 0 auto; padding: 40px 16px 56px; }
#fallback h1 { font-size: 26px; margin-bottom: 6px; }
#fallback .reason { margin: 0 0 10px; color: var(--accent); }
#fallback .lede { font-size: 15px; margin-bottom: 24px; }
#fallback video, #fallback img { display: block; width: 100%; height: auto; border-radius: 10px; background: #1b212b; }
#fallback video { margin-bottom: 28px; }
#fallback figure { margin: 0 0 28px; }
#fallback figcaption { margin-top: 8px; color: var(--muted); font-size: 13px; }
#fallback footer { margin-top: 36px; padding-top: 16px; border-top: 1px solid #2a313d; color: var(--muted); font-size: 13px; }
#fallback footer p { margin: 0 0 8px; }
#fallback [hidden] { display: none; }
/* the fallback's live view (lite.js). */
#lite { margin: 0 0 32px; }
#lite-view { display: block; width: 100%; aspect-ratio: 16 / 10; max-height: 70vh; border-radius: 10px; background: #9fb0c4;
  touch-action: none; cursor: grab; }
#lite-view:active { cursor: grabbing; }
.lite-bar { display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: end; margin-top: 10px; }
.lite-bar label { margin: 0; }
.lite-bar select { display: inline-block; width: auto; margin: 0 0 0 6px; }
.lite-bar .lite-threshold { flex: 1; min-width: 180px; }
.lite-stats { grid-template-columns: auto 1fr auto 1fr; gap: 3px 14px; margin: 12px 0 8px; font-size: 13px; }
.lite-note { margin: 0; color: var(--muted); font-size: 13px; }
#lite-status:not(:empty) { color: var(--accent); margin-right: 6px; }
@media (max-width: 640px) { .lite-stats { grid-template-columns: auto 1fr; } }