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

:root {
  --bg:         #0a0a0f;
  --surface:    #12121a;
  --border:     #1e1e2e;
  --accent:     #00d4ff;
  --text:       #e2e8f0;
  --text-muted: #64748b;
  --ok:         #22c55e;
  --warn:       #f59e0b;
  --error:      #ef4444;
  --pinch:      #ff6b35;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

#app { display: flex; flex-direction: column; min-height: 100vh; }

/* ── Header ──────────────────────────────────────────── */
header {
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

h1 { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; }
.accent { color: var(--accent); }

#mode-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition: border-color 0.2s, color 0.2s;
}

#mode-pill.draw  { border-color: var(--ok);  color: var(--ok); }
#mode-pill.grab  { border-color: var(--accent); color: var(--accent); }

#mode-icon { font-size: 0.7rem; }

#status-bar {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: auto;
}

#status-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.3s, box-shadow 0.3s;
}
#status-dot.ok    { background: var(--ok);    box-shadow: 0 0 8px var(--ok); }
#status-dot.warn  { background: var(--warn);  box-shadow: 0 0 8px var(--warn); }
#status-dot.error { background: var(--error); box-shadow: 0 0 8px var(--error); }

/* ── Main ────────────────────────────────────────────── */
main { flex: 1; display: flex; align-items: center; justify-content: center; padding: 1.5rem; }

#scene-wrapper {
  position: relative;
  width: 100%;
  max-width: 960px;
}

/* mirrored: video + 2D hand canvas */
#scene {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #000;
  transform: scaleX(-1);
  box-shadow: 0 0 48px rgba(0, 212, 255, 0.05);
}

video { width: 100%; height: 100%; display: block; object-fit: cover; }

#canvas-2d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* NOT mirrored: Three.js 3D canvas */
#canvas-3d {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  pointer-events: none;
  z-index: 4;
}

/* ── Badge ───────────────────────────────────────────── */
#pinch-badge {
  position: absolute;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%) scale(0.85);
  background: linear-gradient(135deg, var(--pinch), #f7931e);
  color: #fff;
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  padding: 0.4rem 1.1rem;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.12s ease, transform 0.12s ease;
  text-transform: uppercase;
  white-space: nowrap;
  z-index: 10;
  box-shadow: 0 0 18px rgba(255, 107, 53, 0.5);
}

#pinch-badge.active {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

#pinch-badge.snap {
  background: linear-gradient(135deg, #7c3aed, #a855f7);
  box-shadow: 0 0 22px rgba(168, 85, 247, 0.65);
}

#pinch-badge.draw {
  background: linear-gradient(135deg, #166534, var(--ok));
  box-shadow: 0 0 22px rgba(34, 197, 94, 0.5);
}

/* ── Footer ──────────────────────────────────────────── */
footer {
  padding: 0.9rem 1.5rem;
  text-align: center;
  font-size: 0.76rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

footer strong { color: var(--accent); }