/* Transcription Section — colorful animated UI */

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.5); }
  70% { box-shadow: 0 0 0 16px rgba(99, 102, 241, 0); }
  100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

@keyframes fade-slide-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bar-dance {
  0%, 100% { transform: scaleY(0.3); }
  50% { transform: scaleY(1); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.transcription-section {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
  padding: 28px;
  margin-top: 24px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 35%, #f093fb 70%, #4facfe 100%);
  background-size: 300% 300%;
  animation: gradient-shift 12s ease infinite;
  box-shadow: 0 20px 60px rgba(102, 126, 234, 0.35);
}

.transcription-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  border-radius: 20px;
  z-index: 0;
}

body.dark .transcription-section::before {
  background: rgba(18, 18, 28, 0.9);
}

.transcription-section > * {
  position: relative;
  z-index: 1;
}

.transcription-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.transcription-title {
  margin: 0;
  font-size: 1.8rem;
  background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #4facfe);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
}

.transcription-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, #667eea, #764ba2);
  box-shadow: 0 4px 14px rgba(102, 126, 234, 0.4);
}

/* Upload zone */
.upload-zone {
  border: 2px dashed transparent;
  border-radius: 16px;
  padding: 44px 24px;
  text-align: center;
  cursor: pointer;
  background:
    linear-gradient(var(--elevation-background), var(--elevation-background)) padding-box,
    linear-gradient(135deg, #667eea, #f093fb, #4facfe) border-box;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.35s ease;
}

.upload-zone:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 16px 40px rgba(102, 126, 234, 0.2);
}

.upload-zone.dragover {
  transform: scale(1.03);
  animation: pulse-ring 1.2s ease infinite;
  background:
    linear-gradient(rgba(102, 126, 234, 0.08), rgba(240, 147, 251, 0.08)) padding-box,
    linear-gradient(135deg, #667eea, #f093fb, #4facfe) border-box;
}

.upload-icon {
  font-size: 3rem;
  margin-bottom: 8px;
  animation: float 3s ease-in-out infinite;
}

.upload-text {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--font-color-primary);
}

.upload-formats {
  font-size: 0.85rem;
  opacity: 0.65;
  margin: 0 0 18px;
}

.browse-audio-btn {
  background: linear-gradient(135deg, #667eea, #764ba2) !important;
  color: #fff !important;
  font-weight: 600;
  padding: 12px 28px !important;
  border-radius: 999px !important;
  transition: transform 0.25s ease, box-shadow 0.25s ease !important;
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.browse-audio-btn:hover {
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 10px 28px rgba(102, 126, 234, 0.5);
}

.upload-status {
  margin-top: 14px;
  font-weight: 600;
  font-size: 0.95rem;
  min-height: 1.4em;
  color: #667eea;
  transition: opacity 0.3s ease;
}

.upload-status.loading::after {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-left: 8px;
  border: 2px solid #667eea;
  border-top-color: transparent;
  border-radius: 50%;
  vertical-align: middle;
  animation: spin 0.8s linear infinite;
}

.upload-status.success {
  color: #10b981;
}

.upload-status.error {
  color: #ef4444;
}

/* Audio player */
.audio-player-container {
  display: none;
  margin-top: 22px;
  padding: 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.12), rgba(240, 147, 251, 0.12));
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.audio-player-container.visible {
  display: block;
  animation: fade-slide-up 0.5s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.player-card {
  display: flex;
  align-items: center;
  gap: 18px;
}

.play-pause-btn {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  font-size: 1.4rem;
  color: #fff;
  background: linear-gradient(135deg, #667eea, #764ba2);
  box-shadow: 0 8px 24px rgba(102, 126, 234, 0.45);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.play-pause-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 32px rgba(102, 126, 234, 0.55);
}

.play-pause-btn:active {
  transform: scale(0.95);
}

.play-pause-btn .pause-icon {
  display: none;
}

.play-pause-btn.playing .play-icon {
  display: none;
}

.play-pause-btn.playing .pause-icon {
  display: inline;
}

.play-pause-btn.playing {
  animation: pulse-ring 2s ease infinite;
}

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

.equalizer-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 32px;
  margin-bottom: 8px;
}

.equalizer-bars span {
  display: block;
  width: 4px;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(to top, #667eea, #f093fb);
  transform: scaleY(0.25);
  transition: transform 0.2s ease;
}

.equalizer-bars.playing span {
  animation: bar-dance 0.8s ease-in-out infinite;
}

.equalizer-bars.playing span:nth-child(1) { animation-delay: 0s; }
.equalizer-bars.playing span:nth-child(2) { animation-delay: 0.1s; }
.equalizer-bars.playing span:nth-child(3) { animation-delay: 0.2s; }
.equalizer-bars.playing span:nth-child(4) { animation-delay: 0.15s; }
.equalizer-bars.playing span:nth-child(5) { animation-delay: 0.05s; }
.equalizer-bars.playing span:nth-child(6) { animation-delay: 0.25s; }
.equalizer-bars.playing span:nth-child(7) { animation-delay: 0.1s; }
.equalizer-bars.playing span:nth-child(8) { animation-delay: 0.2s; }
.equalizer-bars.playing span:nth-child(9) { animation-delay: 0.05s; }
.equalizer-bars.playing span:nth-child(10) { animation-delay: 0.15s; }

.now-playing-label {
  margin: 0 0 4px;
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--font-color-primary);
}

.spacebar-hint {
  margin: 0;
  font-size: 0.78rem;
  opacity: 0.6;
}

.spacebar-hint kbd {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 5px;
  font-family: inherit;
  font-size: 0.75rem;
  background: rgba(102, 126, 234, 0.15);
  border: 1px solid rgba(102, 126, 234, 0.3);
  color: #667eea;
}

#audio-player {
  display: none;
}

.audio-seek {
  width: 100%;
  margin-top: 14px;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  border-radius: 999px;
  background: linear-gradient(90deg, #667eea var(--seek-pct, 0%), rgba(102, 126, 234, 0.2) var(--seek-pct, 0%));
  outline: none;
  cursor: pointer;
}

.audio-seek::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #f093fb);
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.5);
  transition: transform 0.2s ease;
}

.audio-seek::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.audio-time-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  opacity: 0.65;
  margin-top: 6px;
}

/* Transcription tools */
.transcription-tools {
  display: none;
  margin-top: 22px;
}

.transcription-tools.visible {
  display: block;
  animation: fade-slide-up 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s both;
}

.transcription-grid {
  gap: 20px;
}

.panel-card {
  padding: 18px;
  border-radius: 14px;
  background: var(--elevation-background);
  border: 1px solid rgba(102, 126, 234, 0.15);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.panel-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(102, 126, 234, 0.12);
}

.panel-title {
  margin: 0 0 14px;
  font-size: 1rem;
  background: linear-gradient(90deg, #667eea, #764ba2);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.panel-header {
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.panel-header .panel-title {
  margin-bottom: 0;
}

.sync-btn {
  padding: 7px 14px !important;
  font-size: 0.85rem !important;
  border-radius: 999px !important;
  background: linear-gradient(135deg, #4facfe, #00f2fe) !important;
  color: #fff !important;
  font-weight: 600;
  transition: transform 0.2s ease !important;
}

.sync-btn:hover {
  transform: scale(1.05);
}

/* Speaker Manager */
.speaker-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.speaker-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid rgba(102, 126, 234, 0.15);
  background: var(--bg-color, var(--background-primary));
  transition: transform 0.25s ease, border-color 0.25s ease;
  animation: fade-slide-up 0.4s ease both;
}

.speaker-item:nth-child(1) { border-left: 4px solid #667eea; }
.speaker-item:nth-child(2) { border-left: 4px solid #f093fb; }
.speaker-item:nth-child(3) { border-left: 4px solid #4facfe; }
.speaker-item:nth-child(4) { border-left: 4px solid #43e97b; }
.speaker-item:nth-child(5) { border-left: 4px solid #fa709a; }

.speaker-item:hover {
  transform: translateX(4px);
  border-color: rgba(102, 126, 234, 0.35);
}

.speaker-item label {
  font-weight: 700;
  font-size: 0.85rem;
  width: 80px;
  color: #667eea;
}

.speaker-item input {
  flex: 1;
  padding: 9px 12px;
  border-radius: 8px;
  border: 1px solid rgba(102, 126, 234, 0.2);
  background-color: var(--elevation-background);
  color: var(--font-color-primary);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.speaker-item input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

/* Live Transcript */
.live-transcript-box {
  background-color: var(--bg-color, var(--background-primary));
  border: 1px solid rgba(102, 126, 234, 0.15);
  border-radius: 12px;
  padding: 16px;
  height: 300px;
  overflow-y: auto;
  font-size: 1.05rem;
  line-height: 1.7;
  scroll-behavior: smooth;
}

.transcript-speaker-block {
  margin-bottom: 16px;
  animation: fade-slide-up 0.35s ease both;
}

.transcript-speaker-name {
  font-weight: 700;
  margin-bottom: 6px;
  display: block;
  font-size: 0.9rem;
}

.transcript-speaker-block:nth-child(5n+1) .transcript-speaker-name { color: #667eea; }
.transcript-speaker-block:nth-child(5n+2) .transcript-speaker-name { color: #f093fb; }
.transcript-speaker-block:nth-child(5n+3) .transcript-speaker-name { color: #4facfe; }
.transcript-speaker-block:nth-child(5n+4) .transcript-speaker-name { color: #43e97b; }
.transcript-speaker-block:nth-child(5n+5) .transcript-speaker-name { color: #fa709a; }

.transcript-word {
  cursor: pointer;
  padding: 2px 1px;
  border-radius: 4px;
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.transcript-word:hover {
  background-color: rgba(102, 126, 234, 0.12);
  transform: translateY(-1px);
}

.transcript-word.highlight {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
  box-shadow: 0 2px 10px rgba(102, 126, 234, 0.4);
  transform: scale(1.05);
}

/* Footer */
.app-footer {
  padding: 40px 0 16px;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.6;
}

@media (max-width: 768px) {
  .transcription-section {
    padding: 18px;
    border-radius: 14px;
  }

  .transcription-title {
    font-size: 1.4rem;
  }

  .upload-zone {
    padding: 30px 16px;
  }

  .player-card {
    flex-direction: column;
    text-align: center;
  }

  .equalizer-bars {
    justify-content: center;
  }
}