/* ==========================================================================
   Clean White / Light Theme with Takeda Red Accents for AudioLab Showcase
   ========================================================================== */

:root {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-subtle: #e2e8f0;
  --border-subtle: #e2e8f0;
  --border-strong: #cbd5e1;
  --border-active: #d81a24;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-dim: #94a3b8;

  /* Takeda Brand Crimson / Red Spectrum */
  --accent-primary: #d81a24;
  --accent-primary-hover: #b9131c;
  --accent-primary-light: rgba(216, 26, 36, 0.08);
  --accent-primary-subtle: rgba(216, 26, 36, 0.15);
  --accent-red: #d81a24;
  --accent-emerald: #10b981;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 8px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 20px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
}

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

body.showcase-body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography Utilities */
.font-mono {
  font-family: var(--font-mono);
}

.text-red {
  color: var(--accent-red) !important;
}

.hidden {
  display: none !important;
}

/* App Header */
.app-header {
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--accent-primary-light);
  border: 1px solid var(--accent-primary-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
}

.brand-titles {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-sub {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-primary);
  background: var(--accent-primary-light);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  margin-left: 4px;
}

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

.header-status {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-mono);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.status-indicator.live {
  background: rgba(16, 185, 129, 0.1);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: currentColor;
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.badge-accent {
  font-size: 0.7rem;
  font-weight: 600;
  font-family: var(--font-mono);
  background: var(--accent-primary-light);
  border: 1px solid var(--accent-primary-subtle);
  color: var(--accent-primary);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.badge-neutral {
  font-size: 0.72rem;
  font-weight: 600;
  font-family: var(--font-mono);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

/* Main Layout */
.app-main {
  flex: 1;
  padding: 2rem 1.5rem 3rem;
}

.showcase-container {
  max-width: 880px;
  margin: 0 auto;
}

/* Hero Section */
.hero-section {
  margin-bottom: 2rem;
  text-align: left;
}

.hero-title {
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.hero-desc code {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--accent-primary);
}

/* Episode Navigation Bar */
.episode-nav-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.25rem;
  padding: 0.625rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
}

.episode-nav-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.episode-pills {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.episode-pill {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 4px 10px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s ease;
}

.episode-pill:hover {
  background: var(--bg-surface-subtle);
  color: var(--text-primary);
}

.episode-pill.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #fff;
}

/* Stage & Cards */
.showcase-stage {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* Player Navigation Tabs */
.player-nav-tabs {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-surface);
  padding: 0.375rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.player-tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 0.875rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.player-tab-btn:hover {
  color: var(--text-primary);
  background: var(--bg-surface-elevated);
}

.player-tab-btn.active {
  background: var(--bg-surface-elevated);
  color: var(--accent-primary);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
}

.tab-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-weight: 700;
}

.player-panel {
  display: none;
}

.player-panel.active {
  display: block;
}

/* PodCore Player Card */
.player-card {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.player-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.player-meta-tag {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-secondary);
}

.player-meta-tag svg {
  color: var(--accent-primary);
}

/* Track Info Layout */
.track-info-layout {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.track-artwork-wrap {
  position: relative;
  width: 96px;
  height: 96px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-elevated);
  box-shadow: var(--shadow-sm);
}

.track-artwork-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.track-details {
  flex: 1;
  min-width: 0;
}

.track-podcast-name {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.track-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-speaker {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.active-chapter-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent-primary-light);
  border: 1px solid var(--accent-primary-subtle);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  max-width: 100%;
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-primary);
}

.pill-prefix {
  color: var(--accent-primary);
  font-weight: 600;
}

.pill-name {
  color: var(--text-primary);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Oscilloscope Visualizer (Light Mode) */
.visualizer-wrapper {
  position: relative;
  height: 96px;
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.visualizer-overlay {
  position: absolute;
  top: 6px;
  left: 10px;
  right: 10px;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  z-index: 2;
}

#podcore-visualizer-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Timeline & Scrubber */
.timeline-container {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.timeline-track-wrap {
  position: relative;
  width: 100%;
  height: 8px;
  background: var(--bg-surface-subtle);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
}

.timeline-progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #d81a24, #ef4444);
  border-radius: var(--radius-full);
  pointer-events: none;
}

.timeline-slider {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
  margin: 0;
}

.timeline-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-secondary);
}

/* Controls Rack */
.controls-rack {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.transport-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-transport {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
}

.btn-transport:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-play-primary {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
  padding: 0.625rem 1.5rem;
  gap: 0.5rem;
  box-shadow: 0 4px 14px rgba(216, 26, 36, 0.3);
}

.btn-play-primary:hover {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(216, 26, 36, 0.4);
}

.btn-subtext {
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.speed-selector-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.speed-group-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

.speed-pills {
  display: flex;
  gap: 0.25rem;
  background: var(--bg-surface-elevated);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.btn-speed {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-speed:hover {
  color: var(--text-primary);
}

.btn-speed.active {
  background: var(--accent-primary);
  color: #fff;
  font-weight: 700;
}

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

.chapters-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chapters-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.chapters-title-wrap svg {
  color: var(--accent-primary);
}

.chapters-hint {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.chapters-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.chapter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 0.875rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
}

.chapter-row:hover {
  border-color: var(--accent-primary);
  background: var(--bg-surface-elevated);
}

.chapter-row.active {
  border-color: var(--accent-primary);
  background: var(--accent-primary-light);
}

.chapter-left {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-width: 0;
}

.chapter-time {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-primary);
  background: var(--accent-primary-light);
  border: 1px solid var(--accent-primary-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.chapter-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.chapter-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-seek-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
}

.chapter-row:hover .btn-seek-chip {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #fff;
}

/* Adapter Cards */
.adapter-card {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.adapter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.adapter-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.adapter-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.adapter-slot {
  min-height: 200px;
  background: var(--bg-surface-elevated);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .app-header .header-container {
    padding: 0.75rem 1rem;
  }
  .app-main {
    padding: 1rem;
  }
  .hero-title {
    font-size: 1.4rem;
  }
  .track-info-layout {
    flex-direction: column;
    text-align: center;
  }
  .active-chapter-pill {
    margin: 0 auto;
  }
  .controls-rack {
    justify-content: center;
  }
}