/* Simple Voice Practice UI - Mobile First */

:root {
  --bg-base: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.8);
  --bg-card-hover: rgba(51, 65, 85, 0.9);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-primary: #3b82f6;
  --accent-success: #22c55e;
  --accent-danger: #ef4444;
  --accent-warning: #f59e0b;
  --border-color: rgba(148, 163, 184, 0.2);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

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

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.app {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  padding: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Header */
.header {
  text-align: center;
  padding: 1.5rem 0;
}

.header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Main Content */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Controls */
.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

/* Auth gate */
.auth-gate {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.22), transparent 55%),
    radial-gradient(circle at 20% 80%, rgba(34, 197, 94, 0.12), transparent 55%),
    var(--bg-base);
  z-index: 1000;
}

.auth-gate__panel {
  width: min(360px, 92vw);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.auth-gate__title {
  font-size: 1.2rem;
  font-weight: 700;
}

.auth-gate__subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.auth-gate__input {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-top: 0.25rem;
}

.auth-input {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.75rem;
  color: var(--text-primary);
  font-size: 1rem;
}

.auth-input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.auth-btn {
  border: none;
  border-radius: var(--radius-full);
  padding: 0.55rem 1.1rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--accent-primary);
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.auth-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.auth-message {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

body[data-auth="unlocked"] .auth-gate {
  display: none;
}

body[data-auth="checking"] .app,
body[data-auth="locked"] .app,
body[data-auth="pending"] .app {
  visibility: hidden;
  pointer-events: none;
}

body[data-auth="unlocked"] .app {
  visibility: visible;
  pointer-events: auto;
}

/* Select Group */
.select-group {
  width: 100%;
  max-width: 320px;
}

.select-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.select-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.select-item label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.scenario-description {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  font-style: italic;
}

/* Language Select (legacy) */
.language-select {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.language-select label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.select {
  appearance: none;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
}

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

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

/* Session Button */
.session-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  max-width: 280px;
  padding: 1.25rem 2rem;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1.25rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-lg);
}

.session-btn--start {
  background: linear-gradient(135deg, var(--accent-primary), #2563eb);
  color: white;
}

.session-btn--start:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 50px rgba(59, 130, 246, 0.4);
}

.session-btn--start:active {
  transform: translateY(0);
}

.session-btn--stop {
  background: linear-gradient(135deg, var(--accent-danger), #dc2626);
  color: white;
}

.session-btn--stop:hover {
  box-shadow: 0 14px 50px rgba(239, 68, 68, 0.4);
}

.session-btn--loading {
  opacity: 0.7;
  cursor: wait;
}

.session-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.session-btn__icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Status Indicator */
.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: var(--bg-card);
  font-size: 0.875rem;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: none;
}

.status-indicator[data-status="listening"] .status-dot {
  background: var(--accent-success);
  animation: pulse 1.5s infinite;
}

.status-indicator[data-status="processing"] .status-dot {
  background: var(--accent-warning);
  animation: pulse 0.8s infinite;
}

.status-indicator[data-status="speaking"] .status-dot {
  background: var(--accent-primary);
  animation: pulse 1s infinite;
}

.status-indicator[data-status="error"] .status-dot {
  background: var(--accent-danger);
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(1.1); }
}

.status-text {
  color: var(--text-secondary);
}

/* Live Section */
.live-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex: 1;
}

.live-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  min-height: 120px;
  display: flex;
  flex-direction: column;
}

.live-card__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.live-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.live-card--stt .live-card__icon {
  color: var(--accent-success);
}

.live-card--llm .live-card__icon {
  color: var(--accent-primary);
}

.live-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.live-card__content {
  flex: 1;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  overflow-y: auto;
  max-height: 200px;
}

.live-card__content:empty::before,
.live-card__content.placeholder::before {
  content: attr(data-placeholder);
  color: var(--text-muted);
  font-style: italic;
}

/* Error Box */
.error-box {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--accent-danger);
  font-size: 0.875rem;
}

/* Footer */
.footer {
  padding: 1.5rem 0;
  text-align: center;
}

.advanced-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 0.2s;
}

.advanced-link:hover {
  color: var(--accent-primary);
}

/* Responsive adjustments */
@media (min-width: 480px) {
  .app {
    padding: 1.5rem;
  }

  .header h1 {
    font-size: 2rem;
  }

  .live-card {
    min-height: 150px;
  }
}

@media (min-width: 768px) {
  .live-section {
    flex-direction: row;
  }

  .live-card {
    flex: 1;
  }
}

/* Safe area insets for notched phones */
@supports (padding-top: env(safe-area-inset-top)) {
  .app {
    padding-top: calc(1rem + env(safe-area-inset-top));
    padding-bottom: calc(1rem + env(safe-area-inset-bottom));
    padding-left: calc(1rem + env(safe-area-inset-left));
    padding-right: calc(1rem + env(safe-area-inset-right));
  }
}