/* ─────────────────────────────────────────────────────────────────────────────
   Open-ASR Model Explorer – Global Styles
   ───────────────────────────────────────────────────────────────────────────── */

/* ── Reset / base ──────────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-border: #334155;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-success: #10b981;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;
  --radius: 0.75rem;
  --radius-sm: 0.375rem;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  font-size: 16px;
}

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── App shell ─────────────────────────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  background: linear-gradient(135deg, #1e1b4b 0%, #0f172a 100%);
  border-bottom: 1px solid var(--color-border);
  padding: 2rem 1.5rem 1.5rem;
  text-align: center;
}

.header-title-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

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

.header-title {
  font-size: 1.875rem;
  font-weight: 700;
  background: linear-gradient(90deg, #a5b4fc, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-subtitle {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.app-main {
  flex: 1;
  max-width: 860px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.app-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--color-border);
}

.app-footer a {
  color: #818cf8;
  text-decoration: none;
}

.app-footer a:hover {
  text-decoration: underline;
}

/* ── Card ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ── Section ───────────────────────────────────────────────────────────────── */
.section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.section-title {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

/* ── Labels ────────────────────────────────────────────────────────────────── */
.label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: 0.25rem;
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  user-select: none;
}

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

.btn:not(:disabled):hover {
  transform: translateY(-1px);
}

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

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

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

.btn-secondary:not(:disabled):hover {
  background: #475569;
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

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

.btn-large {
  padding: 0.75rem 2rem;
  font-size: 1rem;
}

/* ── Action row ────────────────────────────────────────────────────────────── */
.action-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ── ModelSelector ─────────────────────────────────────────────────────────── */
.model-selector {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.select-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.select {
  flex: 1;
  min-width: 200px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 0.5rem 0.75rem;
  font-size: 0.95rem;
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s;
}

.select:focus {
  border-color: var(--color-primary);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  cursor: help;
}

/* ── AudioRecorder ─────────────────────────────────────────────────────────── */
.audio-recorder {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.recorder-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ── Sample clips ──────────────────────────────────────────────────────────── */

.sample-clips {
  margin-top: 0.75rem;
}

.sample-clips-hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0 0 0.5rem;
}

.sample-clips-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-sample-active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.file-name {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
}

.audio-player {
  width: 100%;
  border-radius: var(--radius-sm);
  accent-color: var(--color-primary);
}

/* ── TranscriptDisplay ─────────────────────────────────────────────────────── */
.transcript-display {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.transcript-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.transcript-title {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.transcript-mode {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.transcript-body {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  min-height: 120px;
  font-size: 1rem;
  line-height: 1.7;
  word-break: break-word;
}

.transcript-stable {
  color: var(--color-text);
}

.transcript-unstable {
  color: var(--color-text-muted);
  font-style: italic;
}

.transcript-placeholder {
  color: #475569;
  font-style: italic;
}

.transcript-loading {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
}

/* ── MetricsDashboard ──────────────────────────────────────────────────────── */
.metrics-dashboard {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.metrics-title {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.metrics-mode-badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  color: #fff;
  font-weight: 700;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

@media (max-width: 600px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }
}

.metric-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  cursor: help;
  transition: border-color 0.15s;
}

.metric-card--highlight {
  border-color: var(--color-success);
}

.metric-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

.metric-value {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

.metric-unit {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.metric-desc {
  font-size: 0.75rem;
  color: #475569;
  line-height: 1.4;
}

/* ── Error banner ──────────────────────────────────────────────────────────── */
.error-banner {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: #fca5a5;
  font-size: 0.9rem;
}

/* ── Spinners ──────────────────────────────────────────────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid rgba(255,255,255,0.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

.spinner-inline {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}