/* PodForge Design System */
:root {
  /* Colors */
  --color-void: #09090B;
  --color-deep: #0F0F12;
  --color-surface: #18181B;
  --color-border: #27272A;
  --color-primary: #8B5CF6;
  --color-primary-hover: #A78BFA;
  --color-primary-dim: rgba(139, 92, 246, 0.1);
  --color-text: #FAFAFA;
  --color-text-secondary: #A1A1AA;
  --color-success: #22C55E;
  --color-error: #EF4444;

  /* Typography */
  --font-sans: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Spacing */
  --container-max: 800px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-void);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Hero Section */
.hero {
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  text-align: center;
  background: linear-gradient(180deg, var(--color-deep) 0%, var(--color-void) 100%);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.logo-icon {
  width: 40px;
  height: 40px;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* Generator Section */
.generator-section {
  margin-top: calc(var(--spacing-lg) * -1);
  position: relative;
  z-index: 10;
}

.form-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

/* Input Toggle */
.input-toggle {
  display: flex;
  gap: var(--spacing-xs);
  padding: 4px;
  background: var(--color-deep);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.toggle-btn {
  flex: 1;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.toggle-btn.active {
  background: var(--color-primary);
  color: var(--color-text);
}

/* Form Elements */
.input-group {
  margin-bottom: var(--spacing-md);
}

.input-group.hidden {
  display: none;
}

.input-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.input-group textarea,
.input-group input {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--color-deep);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  resize: vertical;
  transition: border-color var(--transition-fast);
}

.input-group textarea:focus,
.input-group input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.input-group textarea::placeholder,
.input-group input::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.6;
}

/* Options Row */
.options-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

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

.option-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.option-buttons {
  display: flex;
  gap: var(--spacing-xs);
}

.option-btn {
  flex: 1;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-deep);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.option-btn.active {
  background: var(--color-primary-dim);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Generate Button */
.generate-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.generate-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

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

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

.btn-icon {
  width: 18px;
  height: 18px;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(9, 9, 11, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.loading-overlay.hidden {
  display: none;
}

.loading-content {
  text-align: center;
}

/* Waveform Animation */
.waveform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 60px;
  margin-bottom: var(--spacing-md);
}

.waveform .bar {
  width: 6px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 3px;
  animation: wave 1.2s ease-in-out infinite;
}

.waveform .bar:nth-child(1) { animation-delay: 0s; }
.waveform .bar:nth-child(2) { animation-delay: 0.1s; }
.waveform .bar:nth-child(3) { animation-delay: 0.2s; }
.waveform .bar:nth-child(4) { animation-delay: 0.3s; }
.waveform .bar:nth-child(5) { animation-delay: 0.4s; }
.waveform .bar:nth-child(6) { animation-delay: 0.5s; }
.waveform .bar:nth-child(7) { animation-delay: 0.6s; }
.waveform .bar:nth-child(8) { animation-delay: 0.7s; }

@keyframes wave {
  0%, 100% {
    height: 20px;
  }
  50% {
    height: 50px;
  }
}

.loading-text {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

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

/* Player Section */
.player-section {
  margin-top: var(--spacing-lg);
}

.player-section.hidden {
  display: none;
}

.player-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.player-info {
  margin-bottom: var(--spacing-md);
}

.podcast-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.podcast-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.meta-separator {
  opacity: 0.4;
}

/* Audio Player */
.audio-player {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.play-btn {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  border: none;
  border-radius: var(--radius-full);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.play-btn:hover {
  background: var(--color-primary-hover);
  transform: scale(1.05);
}

.play-btn svg {
  width: 20px;
  height: 20px;
}

.play-btn .play-icon {
  margin-left: 2px;
}

.play-btn .hidden {
  display: none;
}

.progress-container {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.time-current,
.time-total {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  min-width: 40px;
}

.time-total {
  text-align: right;
}

.progress-bar {
  flex: 1;
  height: 6px;
  background: var(--color-deep);
  border-radius: 3px;
  cursor: pointer;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  border-radius: 3px;
  transition: width 100ms linear;
}

.download-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-deep);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.download-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.download-btn svg {
  width: 18px;
  height: 18px;
}

/* Recent Podcasts Section */
.recent-section {
  margin-top: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.podcasts-grid {
  display: grid;
  gap: var(--spacing-sm);
}

.podcast-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.podcast-item:hover {
  border-color: var(--color-primary);
}

.podcast-item-play {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-dim);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  flex-shrink: 0;
}

.podcast-item-play svg {
  width: 14px;
  height: 14px;
  margin-left: 2px;
}

.podcast-item-info {
  flex: 1;
  min-width: 0;
}

.podcast-item-title {
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.podcast-item-meta {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.podcast-item-status {
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--color-primary-dim);
  color: var(--color-primary);
}

.podcast-item-status.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
}

.podcast-item-status.generating {
  background: rgba(234, 179, 8, 0.1);
  color: #EAB308;
}

.empty-state {
  text-align: center;
  padding: var(--spacing-lg);
  color: var(--color-text-secondary);
}

/* Footer */
.footer {
  padding: var(--spacing-lg) 0;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  border-top: 1px solid var(--color-border);
}

/* Responsive */
@media (max-width: 600px) {
  .hero-title {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .form-card {
    padding: var(--spacing-md);
  }

  .audio-player {
    flex-wrap: wrap;
  }

  .progress-container {
    order: 3;
    width: 100%;
    margin-top: var(--spacing-xs);
  }
}