:root {
  --bg: #0b0f1a;
  --surface: #121826;
  --surface-2: #1a2233;
  --border: #232c40;
  --text: #e7ecf3;
  --text-dim: #93a0b8;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --accent: #22d3ee;
  --success: #10b981;
  --danger: #ef4444;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

html, body {
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}

body {
  display: flex;
  flex-direction: column;
}

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.brand-name {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.2px;
}

.brand-sub {
  font-size: 12px;
  color: var(--text-dim);
}

.status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
}

.status-dot.idle { background: #6b7280; }
.status-dot.connecting { background: #f59e0b; animation: pulse 1.2s infinite; }
.status-dot.listening { background: var(--success); animation: pulse 1.2s infinite; }
.status-dot.error { background: var(--danger); }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

/* Controls */
.controls {
  display: flex;
  align-items: end;
  gap: 12px;
  padding: 16px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-group.spacer { flex: 1; }

.control-group label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
}

select {
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  min-width: 180px;
}

select:focus {
  outline: none;
  border-color: var(--primary);
}

.btn {
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }

.btn-secondary {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--danger);
  border-color: var(--danger);
}

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

.btn-ghost:hover:not(:disabled) {
  background: var(--surface-2);
  color: var(--text);
}

/* Grid */
.grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 16px 24px;
  overflow: hidden;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.panel.highlight {
  border-color: var(--primary);
  background: linear-gradient(180deg, var(--surface) 0%, rgba(37, 99, 235, 0.05) 100%);
}

.panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
}

.lang-tag {
  background: var(--surface-2);
  color: var(--accent);
  padding: 3px 9px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.panel.highlight .lang-tag {
  background: rgba(37, 99, 235, 0.2);
  color: #93c5fd;
}

.panel-title {
  font-size: 13px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}

.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  font-size: 26px;
  line-height: 1.55;
  font-weight: 400;
}

.panel-body p {
  margin-bottom: 14px;
}

.panel-body .placeholder {
  color: var(--text-dim);
  font-style: italic;
  font-size: 18px;
}

.panel-body .partial {
  color: var(--text-dim);
  opacity: 0.7;
}

.panel-body .final {
  color: var(--text);
}

.panel.highlight .panel-body .final {
  color: #f0f7ff;
}

/* Auto-scroll fade */
.panel-body::-webkit-scrollbar { width: 6px; }
.panel-body::-webkit-scrollbar-track { background: transparent; }
.panel-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Footer */
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 24px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-dim);
}

kbd {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 11px;
  font-family: 'JetBrains Mono', monospace;
}

.kbd-hint { display: flex; align-items: center; gap: 6px; }

/* Presentation mode — bigger fonts, hide controls */
body.presenting .topbar,
body.presenting .controls,
body.presenting .footer {
  display: none;
}

body.presenting .grid {
  padding: 32px;
  gap: 24px;
}

body.presenting .panel-body {
  font-size: 42px;
  line-height: 1.5;
}

body.presenting .panel-head {
  padding: 16px 24px;
}

/* Responsive */
@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }
  .controls { gap: 8px; }
  select { min-width: 140px; }
}