/* ─────────────────────────────────────────────
   APP SHELL
────────────────────────────────────────────── */
.app-shell {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  overflow: hidden;
  background: var(--bg);
}

/* ─────────────────────────────────────────────
   TOPBAR
────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  height: 52px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 12px;
  position: relative;
  z-index: 20;
}
.topbar::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 40%, var(--accent) 60%, transparent 100%);
  opacity: 0.5;
}

.topbar-left { display: flex; align-items: center; gap: 14px; min-width: 0; }
.topbar-right { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.status-wrap {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.72rem; font-weight: 700;
  color: var(--text3);
  letter-spacing: 0.06em;
}

.topbar-controls {
  display: flex; align-items: center; gap: 6px;
}

.topbar select {
  width: auto;
  padding: 4px 8px;
  font-size: 0.72rem;
  border-radius: 6px;
  height: 28px;
}

/* ─────────────────────────────────────────────
   MAIN LAYOUT
────────────────────────────────────────────── */
.app-main {
  display: grid;
  grid-template-columns: 1fr 300px;
  flex: 1;
  overflow: hidden;
  gap: 0;
}

/* ─────────────────────────────────────────────
   CAMERA PANEL
────────────────────────────────────────────── */
.camera-panel {
  position: relative;
  background: #000;
  overflow: hidden;
}

.camera-stage {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#videoEl {
  position: absolute;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
}
#canvasEl {
  position: absolute;
  width: 100%; height: 100%;
  object-fit: cover;
}

/* HUD */
.hud-top {
  position: absolute;
  top: 14px; left: 14px;
  display: flex; gap: 8px;
  z-index: 10;
}
.hud-chip {
  background: var(--hud-bg);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.hud-chip span {
  display: block;
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text3);
}
.hud-chip strong {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--text);
  line-height: 1.1;
}
.hud-chip.hud-score strong { color: var(--accent); font-size: 1.4rem; }

.hud-bottom {
  position: absolute;
  bottom: 14px; left: 14px; right: 14px;
  z-index: 10;
}
.live-cue {
  background: var(--hud-bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  margin-bottom: 6px;
  transition: border-color 0.3s;
}
.live-cue.bad { border-left-color: var(--bad); color: var(--bad); }
.live-cue.warn { border-left-color: var(--warn); color: var(--warn); }
.live-cue.good { border-left-color: var(--good); }

.angle-readout {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text3);
  font-family: 'Barlow Condensed', sans-serif;
  letter-spacing: 0.06em;
  padding: 0 4px;
}

/* Start overlay */
.overlay-start {
  position: absolute;
  inset: 0;
  background: var(--overlay-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 30;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadeUp 0.3s ease both;
}
.overlay-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  max-width: 380px;
  text-align: center;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.overlay-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.overlay-card h1 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.9rem;
  font-weight: 900;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1;
}
.overlay-card p {
  font-size: 0.85rem;
  color: var(--text2);
  margin-bottom: 22px;
  line-height: 1.6;
}
.overlay-note {
  margin-top: 14px;
  font-size: 0.68rem;
  color: var(--text3);
}

/* ─────────────────────────────────────────────
   SIDE PANEL
────────────────────────────────────────────── */
.side-panel {
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}

.panel-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}
.panel-section:last-child { border-bottom: none; flex: 1; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.three-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }

/* ─────────────────────────────────────────────
   MODE BUTTONS
────────────────────────────────────────────── */
.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
}
.mode-btn {
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--text2);
  font-family: 'Barlow', sans-serif;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 7px 4px;
  cursor: pointer;
  text-align: center;
  transition: all 0.18s;
  line-height: 1.3;
}
.mode-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}
.mode-btn:hover:not(.active) { border-color: var(--border2); color: var(--text); background: var(--bg3); }

/* ─────────────────────────────────────────────
   STATS GRID
────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}
.stat-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 6px;
  text-align: center;
}
.stat-card span {
  display: block;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text3);
  margin-bottom: 2px;
}
.stat-card strong {
  display: block;
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}

/* ─────────────────────────────────────────────
   BTN ROW
────────────────────────────────────────────── */
.btn-row {
  display: flex; gap: 6px; flex-wrap: wrap;
}
.btn-row .primary-btn { flex: 1; }
.btn-row .ghost-btn { flex: 1; }

/* ─────────────────────────────────────────────
   FEEDBACK LIST
────────────────────────────────────────────── */
.feedback-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 120px;
  overflow-y: auto;
}
.feedback-list li {
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.4;
  padding: 6px 10px;
  border-radius: 6px;
  border-left: 3px solid transparent;
}
.feedback-list li.good { background: var(--good-bg); border-left-color: var(--good); color: var(--good); }
.feedback-list li.warn { background: var(--warn-bg); border-left-color: var(--warn); color: var(--warn); }
.feedback-list li.bad  { background: var(--bad-bg);  border-left-color: var(--bad);  color: var(--bad); }

/* ─────────────────────────────────────────────
   CALIBRATION
────────────────────────────────────────────── */
.calibration-card {
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
  padding: 10px;
  display: grid;
  gap: 7px;
}
.calibration-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.calibration-title {
  color: var(--text2);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.calibration-pill {
  border-radius: 8px;
  padding: 4px 8px;
  background: rgba(255,255,255,0.08);
  color: var(--text2);
  font-size: 0.68rem;
  font-weight: 800;
}
.calibration-pill.ready {
  background: rgba(34,197,94,0.16);
  color: #86efac;
}
.calibration-pill.caution {
  background: rgba(245,158,11,0.18);
  color: #facc15;
}
.calibration-pill.blocked {
  background: rgba(239,68,68,0.18);
  color: #fca5a5;
}
.calibration-cue {
  color: var(--text2);
  font-size: 0.78rem;
  line-height: 1.35;
}

/* ─────────────────────────────────────────────
   SESSION LOG
────────────────────────────────────────────── */
.session-log {
  max-height: 120px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.log-row {
  font-size: 0.7rem;
  color: var(--text3);
  line-height: 1.4;
  padding: 2px 0;
  border-bottom: 1px solid var(--border);
}
.log-row strong { color: var(--text2); font-weight: 700; }

/* ─────────────────────────────────────────────
   SCORE ANIMATION
────────────────────────────────────────────── */
@keyframes score-pop {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.2); }
  100% { transform: scale(1); }
}
.score-pop { animation: score-pop 0.25s ease; }