:root {
  --bg: #0e1116;
  --panel: #161a22;
  --line: #262c38;
  --text: #e8ebf0;
  --muted: #8a93a3;
  --accent: #ffcf3f;
  --car: #4fb3ff;
  --person: #ff6b8b;
  --bike: #7ee07a;
  --bus: #c38bff;
  --truck: #ff9f43;
  font-family: "IBM Plex Sans Thai", system-ui, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.55; }
a { color: var(--accent); }
button { font: inherit; cursor: pointer; }

.top { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; padding: 18px 24px 10px; }
.brand { font-weight: 600; font-size: 20px; display: flex; align-items: center; gap: 10px; }
.logo { width: 22px; height: 16px; border: 3px solid var(--accent); border-radius: 3px; }
.tag { margin: 0; color: var(--muted); }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; padding: 8px 24px 24px; }
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; padding: 8px 16px 16px; } .top { padding: 16px 16px 6px; } }

.sources { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 10px; }
.sources button { background: var(--panel); color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; }
.sources button.on { color: #111; background: var(--accent); border-color: var(--accent); }

.stage { position: relative; background: #000; border-radius: 10px; overflow: hidden; aspect-ratio: 16 / 9; touch-action: none; }
.stage video, .stage img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; }
.status { position: absolute; left: 12px; top: 12px; background: rgba(0,0,0,.65); padding: 4px 10px; border-radius: 6px; font-size: 13px; }
.status:empty { display: none; }

.thumbs { display: flex; gap: 8px; margin-top: 10px; }
.thumbs button { padding: 0; background: none; border: 2px solid transparent; border-radius: 8px; opacity: .65; overflow: hidden; }
.thumbs button.on { border-color: var(--accent); opacity: 1; }
.thumbs img { display: block; width: 110px; aspect-ratio: 3 / 2; object-fit: cover; }
.replay { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); background: var(--accent); color: #111; border: 0; border-radius: 999px; padding: 10px 22px; font-weight: 600; }
body.still .only-motion, body:not(.still) .only-still { display: none; }

.controls { display: flex; gap: 14px 20px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.controls label { display: flex; align-items: center; gap: 8px; color: var(--muted); }
.controls output { color: var(--text); font-family: "IBM Plex Mono", monospace; min-width: 3ch; }
.controls input[type=range] { accent-color: var(--accent); width: 140px; }
.check input { accent-color: var(--accent); }
.ghost { background: none; color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 6px 12px; }
.ghost:hover { border-color: var(--accent); }
.hint { color: var(--muted); font-size: 13px; margin: 10px 0 0; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; align-self: start; }
.panel h2 { font-size: 13px; font-weight: 500; color: var(--muted); margin: 0 0 8px; }
.panel h2:not(:first-child), #crossedBox { margin-top: 20px; }
#crossedBox h2 { margin-top: 0; }
.counts { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.counts li { display: flex; align-items: center; gap: 8px; }
.counts .dot { width: 10px; height: 10px; border-radius: 3px; }
.counts .n { margin-left: auto; font-family: "IBM Plex Mono", monospace; }
.counts.big .n { font-size: 22px; color: var(--accent); }
.counts .empty { color: var(--muted); }
.panel .total { float: right; color: var(--text); font-family: "IBM Plex Mono", monospace; }
.log { list-style: none; margin: 10px 0 0; padding: 0; font-size: 13px; color: var(--muted); display: grid; gap: 2px; }
.log .t { display: inline-block; min-width: 4.5em; font-family: "IBM Plex Mono", monospace; color: var(--text); }

.classes { display: flex; flex-wrap: wrap; gap: 6px; }
.classes label { display: flex; gap: 6px; align-items: center; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 3px 9px; font-size: 13px; }
.classes input { accent-color: var(--accent); margin: 0; }
.classes .dot { width: 8px; height: 8px; border-radius: 2px; }

.meta { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 20px 0 0; font-size: 13px; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; }

.foot { padding: 0 24px 28px; color: var(--muted); font-size: 13px; }
.foot p { margin: 4px 0; }
.credit { font-size: 12px; }
@media (max-width: 900px) { .foot { padding: 0 16px 24px; } }