:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --text: #e8eef4;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --ok: #3dd68c;
  --bad: #f07178;
  --border: #2a3548;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.hero {
  padding: 2rem 1.5rem 1rem;
  max-width: 1100px;
  margin: 0 auto;
}

.hero h1 { margin: 0 0 0.5rem; font-size: 1.75rem; }
.hero p { margin: 0; color: var(--muted); max-width: 52rem; }

.layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem 3rem;
  display: grid;
  gap: 1.25rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.panel h2 { margin-top: 0; font-size: 1.1rem; }
.panel h3 { margin-top: 0; font-size: 1rem; }

.help {
  font-size: 0.88rem;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.controls .row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.controls label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 220px;
}

select {
  flex: 1;
  padding: 0.4rem 0.5rem;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
}

input[type="range"] { flex: 1; min-width: 120px; }

.actions { gap: 1rem; }

.btn {
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
}

.btn:hover { filter: brightness(1.1); }

.chk {
  font-size: 0.9rem;
  color: var(--muted);
  min-width: auto !important;
  flex: 0 1 auto !important;
}

.verdict {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  border-radius: 8px;
  background: var(--bg);
  font-size: 1.05rem;
}

.verdict .pct {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
}

.verdict.duplicate .pct { color: var(--ok); }
.verdict.different .pct { color: var(--bad); }
.verdict.neutral .pct { color: var(--accent); }

.verdict .sub {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

.players {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 800px) {
  .players { grid-template-columns: 1fr; }
}

.player-block video {
  width: 100%;
  max-height: 260px;
  background: #000;
  border-radius: 8px;
}

.media-info {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  font-family: Consolas, monospace;
}

.grid-caption {
  margin: 0.75rem 0 0.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.player-block canvas {
  display: block;
  border: 1px solid var(--border);
  border-radius: 6px;
  image-rendering: pixelated;
}

.timeline-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.tl-label {
  width: 1.5rem;
  font-weight: 700;
  color: var(--muted);
}

#stripA, #stripB {
  flex: 1;
  width: 100%;
  border-radius: 4px;
  border: 1px solid var(--border);
  cursor: pointer;
}

#shiftChart, #secChart {
  width: 100%;
  border-radius: 6px;
  background: var(--bg);
}

.demo-cta {
  position: sticky;
  bottom: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  background: rgba(26, 35, 50, 0.95);
  border-top: 1px solid var(--border);
  backdrop-filter: blur(6px);
}

.demo-cta p {
  margin: 0;
  color: var(--muted);
}

.demo-cta-btn {
  padding: 0.5rem 1.25rem;
  background: var(--ok);
  color: #0f1419 !important;
  text-decoration: none !important;
  border-radius: 8px;
  font-weight: 700;
}

.demo-cta-btn:hover {
  filter: brightness(1.08);
}

body.embed .hero p,
body.embed .timeline,
body.embed .chart,
body.embed .demo-cta {
  display: none;
}

body.embed .hero {
  padding: 1rem 1.5rem 0.5rem;
}

body.embed .hero h1 {
  font-size: 1.2rem;
}

body.embed .layout {
  padding-bottom: 1rem;
}