:root {
  --bg: #16131f;
  --panel: #1f1b2e;
  --panel-alt: #262038;
  --border: #362f4c;
  --text: #f3f0fa;
  --text-dim: #a99fc4;
  --accent: #ff5c8a;
  --accent-2: #7fd8ff;
  --good: #6be3a3;
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(circle at 15% 0%, #3a2a55 0%, transparent 45%),
    radial-gradient(circle at 85% 15%, #2a3a55 0%, transparent 45%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

main {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px 60px;
}

.site-header {
  text-align: center;
  padding: 40px 20px 24px;
}

.site-header h1 {
  margin: 0 0 6px;
  font-size: clamp(28px, 5vw, 40px);
}

.paw { display: inline-block; }

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

.site-footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  padding: 24px 20px 40px;
}

/* ---------------- Stage: video + reveal ---------------- */

.stage {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 20px;
  margin-bottom: 22px;
}

@media (max-width: 720px) {
  .stage { grid-template-columns: 1fr; }
}

.video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

#video, #overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: scaleX(-1); /* mirror for a natural selfie view */
}

#video {
  object-fit: cover;
}

#overlay {
  pointer-events: none;
}

.camera-msg {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(10, 8, 16, 0.72);
  text-align: center;
  padding: 20px;
}

.camera-msg.hidden { display: none; }

.camera-msg p {
  margin: 0;
  max-width: 320px;
  color: var(--text-dim);
}

.match-flash {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(255,255,255,0.9), rgba(255,255,255,0));
  opacity: 0;
  pointer-events: none;
}

.match-flash.flash-active {
  animation: flashPop 500ms ease-out;
}

@keyframes flashPop {
  0% { opacity: 0.85; }
  100% { opacity: 0; }
}

.reveal-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  min-height: 220px;
}

.reveal-panel img {
  max-width: 70%;
  max-height: 220px;
  border-radius: 14px;
  animation: revealPop 380ms cubic-bezier(.2,1.4,.4,1);
}

.reveal-panel img.hidden { display: none; }

@keyframes revealPop {
  0% { transform: scale(0.6) rotate(-6deg); opacity: 0; }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}

.reveal-empty {
  text-align: center;
  color: var(--text-dim);
}

.reveal-empty p { margin: 4px 0; }
.reveal-empty .hint { font-size: 13px; }
.reveal-empty.hidden { display: none; }

.match-meter {
  width: 100%;
  max-width: 260px;
  height: 8px;
  border-radius: 999px;
  background: var(--panel-alt);
  overflow: hidden;
}

.match-meter-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  transition: width 120ms linear;
}

.match-meter-fill.meter-hot {
  background: linear-gradient(90deg, var(--good), #34c98a);
}

.match-label {
  margin: 0;
  font-weight: 600;
  min-height: 1.2em;
}

/* ---------------- Controls ---------------- */

.controls {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.controls-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.controls-row label {
  color: var(--text-dim);
  font-size: 14px;
}

#threshold { flex: 1; min-width: 140px; accent-color: var(--accent); }

#thresholdValue {
  font-variant-numeric: tabular-nums;
  min-width: 3.5em;
}

.skeleton-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 14px;
  margin-left: auto;
}

/* ---------------- Buttons ---------------- */

.btn {
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 100ms ease, opacity 100ms ease;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #ff8a5c);
  color: #1a1220;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.btn-armed {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-small {
  padding: 8px 14px;
  font-size: 13px;
  background: var(--panel-alt);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-tiny {
  padding: 8px 10px;
  font-size: 12px;
}

/* ---------------- Slots ---------------- */

.slots h2 {
  margin: 0 0 6px;
  font-size: 20px;
}

.slots-hint {
  margin: 0 0 16px;
  color: var(--text-dim);
  font-size: 14px;
}

.slots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}

.slot-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.slot-card.is-matched {
  border-color: var(--good);
  box-shadow: 0 0 0 1px var(--good), 0 0 18px rgba(107, 227, 163, 0.35);
}

.slot-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 10px;
  background: var(--panel-alt);
}

.slot-label {
  margin: 0;
  font-weight: 600;
  font-size: 14px;
  text-align: center;
}

.slot-status {
  margin: 0;
  font-size: 12px;
  color: var(--text-dim);
  text-align: center;
  min-height: 1.4em;
}

.slot-status.calibrated { color: var(--good); }

.slot-btn-row {
  display: flex;
  gap: 6px;
  width: 100%;
}

.slot-btn-row .btn-small { flex: 1; }

.hidden { display: none !important; }