:root {
  color-scheme: dark;
  --bg: #0f0f12;
  --bg-card: #1b1b20;
  --text: #e8e8ea;
  --text-dim: #9a9aa2;
  --accent: #4da3ff;
  --border: #2c2c33;
}

* { box-sizing: border-box; }

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

header {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border);
}

header h1 { margin: 0; font-size: 1.4rem; }
header a { color: var(--text); text-decoration: none; }

main { padding: 2rem; max-width: 1400px; margin: 0 auto; }

.scene-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.scene-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  color: var(--text);
  text-decoration: none;
}

.scene-card:hover { border-color: var(--accent); }
.scene-card .count { color: var(--text-dim); font-size: 0.9rem; }

.empty-state { color: var(--text-dim); }
.scene-description { color: var(--text-dim); margin-top: -0.5rem; margin-bottom: 1.5rem; max-width: 700px; }

form label {
  display: block;
  margin-bottom: 1rem;
}

input[type="text"], input[type="file"], select {
  display: block;
  margin-top: 0.3rem;
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.5rem;
  width: 100%;
  max-width: 400px;
}

button {
  background: var(--accent);
  color: #06111f;
  border: none;
  border-radius: 4px;
  padding: 0.6rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
}

.error { color: #ff6b6b; }
.hidden { display: none !important; }

#compare-controls { margin-bottom: 1rem; display: flex; gap: 1.5rem; flex-wrap: wrap; align-items: center; }
.mode-btn { background: var(--bg-card); color: var(--text); border: 1px solid var(--border); margin-right: 0.3rem; }
.mode-btn.active { background: var(--accent); color: #06111f; }
#blink-chips { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.device-chip { background: var(--bg-card); color: var(--text); border: 1px solid var(--border); font-size: 0.85rem; padding: 0.4rem 0.7rem; }
.device-chip.active { border-color: var(--accent); color: var(--accent); }
#slider-controls { display: flex; gap: 1rem; }
#slider-controls label { display: flex; align-items: center; gap: 0.4rem; margin: 0; }
#slider-controls select { max-width: 220px; margin: 0; }

#compare-viewport {
  position: relative;
  width: 100%;
  max-width: 1400px;
  height: 70vh;
  margin: 0 auto;
  overflow: hidden;
  background: #000;
  cursor: grab;
  touch-action: none;
  border: 1px solid var(--border);
}
#compare-viewport:active { cursor: grabbing; }
#compare-stage { position: absolute; top: 0; left: 0; width: 100%; transform-origin: 0 0; }
#blink-stack { position: relative; }
.device-image { position: absolute; top: 0; left: 0; width: 100%; display: none; }
.device-image.visible { display: block; }
img-comparison-slider { width: 100%; display: block; }
img-comparison-slider img { width: 100%; display: block; }