:root {
  color-scheme: dark;
  --bg: #0b1220;
  --panel: #111b2d;
  --border: #22304a;
  --text: #dbe4ff;
  --muted: #8ea2c8;
  --blue: #4da3ff;
  --orange: #ff9f43;
  --purple: #a383ff;
  --red: #ff5c8d;
  --grid: #1c2840;
  --stripe: repeating-linear-gradient(-45deg, transparent, transparent 6px, rgba(255, 92, 141, 0.2) 6px, rgba(255, 92, 141, 0.2) 12px);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(77, 163, 255, 0.1), transparent 40%),
    radial-gradient(circle at 80% 10%, rgba(255, 159, 67, 0.1), transparent 35%), var(--bg);
  color: var(--text);
  padding: 32px 24px 48px;
}

header {
  margin-bottom: 20px;
}

h1 {
  margin: 0 0 8px;
  letter-spacing: 0.5px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.warning {
  background: rgba(255, 159, 67, 0.15);
  border: 1px solid var(--orange);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 24px;
  color: var(--text);
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.control-group {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}

.control-group label {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.control-group input[type="range"] {
  width: 100%;
  accent-color: var(--blue);
}

.control-group .value {
  display: inline-block;
  min-width: 80px;
  text-align: right;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.metric {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}

.metric .label {
  display: block;
  color: var(--muted);
  margin-bottom: 6px;
}

.metric .number {
  font-size: 1.3rem;
  font-variant-numeric: tabular-nums;
}

.timeline {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.legend {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.legend-item {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.9rem;
  border: 1px solid var(--border);
}

.legend-item.script { background: rgba(77, 163, 255, 0.15); color: var(--blue); }
.legend-item.render { background: rgba(255, 159, 67, 0.15); color: var(--orange); }
.legend-item.gpu { background: rgba(163, 131, 255, 0.15); color: var(--purple); }
.legend-item.wait { background: rgba(255, 92, 141, 0.15); color: var(--red); }

.time-axis {
  position: relative;
  height: 32px;
  margin-top: 12px;
  margin-left: 130px;
  border-bottom: 1px solid var(--grid);
}

.time-axis .tick {
  position: absolute;
  width: 1px;
  background: var(--grid);
  height: 100%;
}

.time-axis .tick span {
  position: absolute;
  bottom: -20px;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: 0.8rem;
}

.lane {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

.lane-label {
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  font-size: 0.85rem;
}

.lane-track {
  position: relative;
  height: 156px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
}

.bar {
  position: absolute;
  height: 18px;
  border-radius: 4px;
  color: #0b1220;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0 6px;
  white-space: nowrap;
}

.bar.script { background: linear-gradient(90deg, rgba(77, 163, 255, 0.8), rgba(77, 163, 255, 0.6)); }
.bar.render { background: linear-gradient(90deg, rgba(255, 159, 67, 0.85), rgba(255, 159, 67, 0.6)); }
.bar.gpu { background: linear-gradient(90deg, rgba(163, 131, 255, 0.9), rgba(163, 131, 255, 0.7)); }
.bar.wait { background: var(--stripe); border: 1px dashed rgba(255, 92, 141, 0.8); color: var(--text); }

.frame-marker {
  position: absolute;
  top: 0;
  width: 2px;
  height: 100%;
  background: rgba(255, 255, 255, 0.08);
}

.frame-marker .label {
  position: absolute;
  top: 2px;
  left: 4px;
  color: var(--muted);
  font-size: 0.75rem;
}

.explanation {
  margin-top: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

@media (max-width: 700px) {
  .lane {
    grid-template-columns: 1fr;
  }
  .lane-track {
    height: 180px;
  }
}