*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #0f1117;
  color: #e0e0e0;
  min-height: 100vh;
  font-size: 14px;
}

header {
  padding: 0.9rem 1.5rem;
  border-bottom: 1px solid #1e2130;
}
header h1 { font-size: 1rem; font-weight: 600; color: #fff; }
header p  { font-size: 0.78rem; color: #555; margin-top: 2px; }

.main {
  display: flex;
  gap: 1rem;
  padding: 1rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

/* ── Camera panel ── */

.camera-panel { flex: 1; min-width: 0; }

#video { display: none; }

#canvas {
  width: 100%;
  display: block;
  border-radius: 6px;
  background: #1a1d2e;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

select {
  background: #1e2130;
  border: 1px solid #3a3d50;
  color: #e0e0e0;
  border-radius: 5px;
  padding: 0.35rem 0.6rem;
  font-size: 0.82rem;
  cursor: pointer;
}

button {
  background: #1e2130;
  border: 1px solid #3a3d50;
  color: #e0e0e0;
  border-radius: 5px;
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  cursor: pointer;
  transition: background 0.15s;
}
button:hover  { background: #2a2d40; }
button.active { background: #4f46e5; border-color: #6366f1; }

.slider-wrap {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.82rem;
  color: #888;
}
input[type=range] {
  accent-color: #6366f1;
  vertical-align: middle;
  width: 90px;
}

#model-progress-wrap {
  height: 4px;
  background: #2a2d3a;
  border-radius: 2px;
  margin-top: 0.5rem;
  overflow: hidden;
}
#model-progress-bar {
  height: 100%;
  width: 0%;
  background: #6366f1;
  border-radius: 2px;
  transition: width 0.1s ease;
}
#status-msg { min-height: 1.2em; font-size: 0.78rem; color: #888; margin-top: 0.3rem; }

/* ── Stats panel ── */

.stats-panel {
  width: 270px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.card {
  background: #1a1d2e;
  border: 1px solid #222538;
  border-radius: 7px;
  padding: 0.8rem 0.9rem;
}

.card-title {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #555;
  margin-bottom: 0.5rem;
}

/* Emotion badge */
.emotion-badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.25rem;
}
.emotion-conf   { font-size: 0.78rem; color: #888; }
.emotion-signal { font-size: 0.75rem; color: #bbb; margin-top: 0.3rem; line-height: 1.3; }

.em-happy    { background: #16a34a; }
.em-surprise { background: #0891b2; }
.em-neutral  { background: #4f46e5; }
.em-sad      { background: #7c3aed; }
.em-fear     { background: #b45309; }
.em-angry    { background: #dc2626; }
.em-disgust  { background: #991b1b; }

/* Receptivity index */
.ri-value {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  margin-bottom: 0.5rem;
}
.ri-bar-track { height: 7px; background: #2a2d3a; border-radius: 4px; overflow: hidden; }
.ri-bar-fill  {
  height: 100%;
  background: linear-gradient(90deg, #dc2626 0%, #f59e0b 50%, #16a34a 100%);
  border-radius: 4px;
  transition: width 0.25s ease;
}

/* Charts */
.chart-canvas { display: block; width: 100%; height: 80px; }
#em-chart     { height: 130px; }

@media (max-width: 680px) {
  .main        { flex-direction: column; }
  .stats-panel { width: 100%; }
}