:root {
  --bg: #0e1116;
  --card: #171b22;
  --ink: #eef2f7;
  --muted: #93a0b3;
  --line: #2a3140;
  --accent: #7c5cff;
  --good: #3dd68c;
  --bad: #ff5d73;
  --warn: #f5c14a;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
header { padding: 22px 28px 8px; }
header h1 {
  margin: 0;
  font-size: 32px;
  letter-spacing: -0.03em;
  color: var(--ink);
}
header h1 span { color: var(--accent); }
header p {
  color: var(--muted);
  max-width: 820px;
  line-height: 1.5;
  margin: 10px 0 0;
  font-size: 15px;
}
main { padding: 8px 28px 48px; }
.bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; margin: 16px 0; }
label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 5px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
input, select, button, textarea {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 10px;
  padding: 9px 11px;
  font: inherit;
}
button { cursor: pointer; font-weight: 700; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.good { background: var(--good); border-color: var(--good); color: #062214; }
button.bad { background: transparent; color: var(--bad); border-color: #5a2430; }
.videos { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.stage {
  position: relative;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.stage video { width: 100%; height: 360px; object-fit: contain; background: #000; display: block; }
.vidstatus {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #c5cddd;
  font-size: 14px;
  z-index: 1;
  pointer-events: none;
  text-align: center;
  padding: 16px;
}
.vidstatus.ok { display: none; }
.vidstatus.err { color: #ffb4be; }
.cap {
  display: flex;
  justify-content: space-between;
  padding: 8px 4px 0;
  font-size: 12px;
  color: var(--muted);
}
.cap b { color: var(--ink); }
.meta {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 12px 0;
  color: var(--muted);
  line-height: 1.45;
}
.meta b { color: var(--ink); }
.guess {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  margin-top: 12px;
}
.guess input[type=range] { width: 100%; }
.delta { font-variant-numeric: tabular-nums; font-size: 28px; font-weight: 800; }
.result { margin-top: 12px; padding: 12px 14px; border-radius: 12px; display: none; }
.result.show { display: block; }
.result.hit { background: #123524; border: 1px solid #2d8a58; }
.result.miss { background: #3a1520; border: 1px solid #8a2a3c; }
.result.note { background: #241c10; border: 1px solid #8a6b24; }
.score { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--muted); }
@media (max-width: 860px) {
  .videos { grid-template-columns: 1fr; }
  .stage video { height: 240px; }
}