/**
 * Voice UI - ChatGPT Style Interface
 *
 * Minimalist voice mode interface with:
 * - Central breathing element with canvas visualizer
 * - 4-button control panel
 * - State-based animations
 * - Accessibility support
 */

/* ============================================================================
   Layout
   ============================================================================ */

#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 0;
  margin: 0;
}

/* Stage - Central area with breathing element */
#stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px 40px;
  gap: 32px;
}

/* Breathing element container */
#breather {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Canvas for waveform/spectrum */
#viz-canvas {
  border-radius: 50%;
  background: #0f0f0f;
}

/* Pulse overlay */
#pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
}

/* Controls */
#controls {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

/* Panes - Transcript and Logs */
#panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding: 0 20px 40px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.pane {
  background: #141414;
  border: 1px solid #1f1f1f;
  border-radius: 12px;
  padding: 20px;
  min-height: 300px;
  display: flex;
  flex-direction: column;
}

.pane h3 {
  margin: 0 0 12px 0;
  font-size: 16px;
  font-weight: 600;
  color: #ddd;
}

#transcript {
  flex: 1;
  overflow-y: auto;
  font-size: 14px;
  line-height: 1.6;
  color: #ccc;
  white-space: pre-wrap;
  word-wrap: break-word;
}

#logs {
  flex: 1;
  overflow-y: auto;
  font-size: 12px;
  line-height: 1.5;
  color: #999;
  font-family: 'Courier New', monospace;
  white-space: pre;
  margin: 0;
  padding: 0;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
  background: #1f1f1f;
  color: #eee;
  border: 1px solid #2a2a2a;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

.btn:hover {
  background: #2a2a2a;
  border-color: #3a3a3a;
}

.btn:active {
  transform: scale(0.98);
}

.btn:focus-visible {
  outline: 2px solid #3fa8ff;
  outline-offset: 2px;
}

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

/* Large buttons */
.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  min-width: 140px;
}

/* Connect button - Green */
.btn-green {
  background: linear-gradient(135deg, #27d07a 0%, #22b869 100%);
  color: #001a0a;
  border: none;
}

.btn-green:hover {
  background: linear-gradient(135deg, #2ee085 0%, #27d07a 100%);
}

/* Disconnect button - Red */
.btn-red {
  background: linear-gradient(135deg, #ff5252 0%, #e04444 100%);
  color: #fff;
  border: none;
}

.btn-red:hover {
  background: linear-gradient(135deg, #ff6b6b 0%, #ff5252 100%);
}

/* Muted state */
.btn-muted {
  background: #ff9500;
  color: #1a0f00;
  border: none;
}

.btn-muted:hover {
  background: #ffaa33;
}

/* ============================================================================
   Breathing Element States
   ============================================================================ */

/* Idle - Gray, no animation */
.state-idle #viz-canvas {
  border: 2px solid #555555;
  opacity: 0.5;
}

/* Listening - Blue pulse */
.state-listening #viz-canvas {
  border: 2px solid #3fa8ff;
}

.state-listening #pulse {
  animation: pulse-blue 2s ease-in-out infinite;
}

/* Speaking - Orange wave */
.state-speaking #viz-canvas {
  border: 2px solid #ff9500;
}

.state-speaking #pulse {
  animation: pulse-orange 1.5s ease-in-out infinite;
}

/* Searching - Yellow fast pulse */
.state-searching #viz-canvas {
  border: 2px solid #ffc107;
}

.state-searching #pulse {
  animation: pulse-yellow 0.8s ease-in-out infinite;
}

/* Pulse animations */
@keyframes pulse-blue {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(63, 168, 255, 0);
    opacity: 0;
  }
  50% {
    box-shadow: 0 0 40px 10px rgba(63, 168, 255, 0.6);
    opacity: 1;
  }
}

@keyframes pulse-orange {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(255, 149, 0, 0);
    opacity: 0;
  }
  50% {
    box-shadow: 0 0 40px 10px rgba(255, 149, 0, 0.6);
    opacity: 1;
  }
}

@keyframes pulse-yellow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(255, 193, 7, 0);
    opacity: 0;
  }
  50% {
    box-shadow: 0 0 50px 15px rgba(255, 193, 7, 0.8);
    opacity: 1;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  #pulse {
    animation: none !important;
  }

  .state-listening #viz-canvas {
    border: 3px solid #3fa8ff;
  }

  .state-speaking #viz-canvas {
    border: 3px solid #ff9500;
  }

  .state-searching #viz-canvas {
    border: 3px solid #ffc107;
  }
}

/* ============================================================================
   "Now Reading" Panel
   ============================================================================ */

.now-reading {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 320px;
  max-width: calc(100vw - 40px);
  background: #1a1a1a;
  border: 1px solid #2a2a2a;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  animation: slide-up 0.3s ease-out;
}

@keyframes slide-up {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.now-reading-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.now-reading-header h3 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: #3fa8ff;
}

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
  min-width: auto;
}

.btn-outline {
  background: transparent;
  border: 1px solid #3a3a3a;
  color: #ccc;
}

.btn-outline:hover {
  background: #2a2a2a;
  border-color: #4a4a4a;
}

.book-info {
  margin-bottom: 12px;
}

.book-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
  line-height: 1.3;
}

.book-author {
  font-size: 13px;
  color: #999;
}

.section-header {
  font-size: 13px;
  color: #ccc;
  margin-bottom: 8px;
  font-style: italic;
}

.page-progress {
  font-size: 12px;
  color: #3fa8ff;
  font-weight: 500;
}

.reading-controls {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid #2a2a2a;
}

.continuation-prompt {
  font-size: 13px;
  color: #ddd;
  margin: 0 0 10px 0;
}

.btn-group {
  display: flex;
  gap: 8px;
}

.btn-group button {
  flex: 1;
  font-size: 13px;
  padding: 8px 12px;
}

.btn-primary {
  background: #3fa8ff;
  color: #fff;
  border: none;
}

.btn-primary:hover {
  background: #5ab8ff;
}

.btn-secondary {
  background: #2a2a2a;
  color: #ccc;
  border: 1px solid #3a3a3a;
}

.btn-secondary:hover {
  background: #3a3a3a;
}

/* ============================================================================
   Settings Panel (keep existing, just adjust position)
   ============================================================================ */

#settingsGear {
  position: fixed;
  top: 12px;
  right: 12px;
  background: transparent;
  border: none;
  font-size: 24px;
  cursor: pointer;
  z-index: 9999;
  padding: 8px;
  line-height: 1;
  opacity: 0.7;
  transition: opacity 0.2s;
}

#settingsGear:hover {
  opacity: 1;
}

#settingsPanel {
  position: fixed;
  top: 52px;
  right: 12px;
  background: #1a1a1a;
  border: 1px solid #2a2a2a;
  color: #eee;
  padding: 16px;
  border-radius: 12px;
  display: none;
  z-index: 9998;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  min-width: 220px;
}

#settingsPanel label {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  cursor: pointer;
  user-select: none;
}

#settingsPanel input[type="checkbox"] {
  margin-right: 8px;
  cursor: pointer;
}

#settingsPanel hr {
  border: none;
  border-top: 1px solid #2a2a2a;
  margin: 12px 0;
}

#settingsPanel .settings-group {
  margin-bottom: 12px;
}

#settingsPanel .settings-group:last-child {
  margin-bottom: 0;
}

#settingsPanel .settings-title {
  font-size: 11px;
  text-transform: uppercase;
  color: #777;
  margin-bottom: 8px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 640px) {
  #stage {
    padding: 40px 15px 30px;
    gap: 24px;
  }

  #breather {
    width: 240px;
    height: 240px;
  }

  #viz-canvas {
    width: 240px !important;
    height: 240px !important;
  }

  #controls {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
  }

  #controls .btn {
    width: 100%;
  }

  #panes {
    grid-template-columns: 1fr;
    padding: 0 15px 30px;
    gap: 15px;
  }

  .now-reading {
    bottom: 10px;
    right: 10px;
    left: 10px;
    width: auto;
  }
}

@media (max-width: 1024px) and (min-width: 641px) {
  #panes {
    max-width: 900px;
  }
}

/* ============================================================================
   Accessibility
   ============================================================================ */

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus indicators */
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 2px solid #3fa8ff;
  outline-offset: 2px;
}

/* High contrast support */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }

  .pane {
    border-width: 2px;
  }

  .now-reading {
    border-width: 2px;
  }
}

/* ============================================================================
   Loading States
   ============================================================================ */

.loading {
  opacity: 0.6;
  pointer-events: none;
  cursor: wait;
}

.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  border-radius: inherit;
}

/* ============================================================================
   Transcript Formatting
   ============================================================================ */

.transcript-user {
  color: #3fa8ff;
  font-weight: 500;
}

.transcript-assistant {
  color: #ddd;
}

.transcript-searching {
  color: #ffc107;
  font-style: italic;
}

.transcript-error {
  color: #ff5252;
}

/* ============================================================================
   Logs Formatting
   ============================================================================ */

.log-info {
  color: #3fa8ff;
}

.log-success {
  color: #27d07a;
}

.log-warning {
  color: #ffc107;
}

.log-error {
  color: #ff5252;
}

/* ========================================================================
   Mode Indicator Badge (Phase 5: Mode Visualization)
   ======================================================================== */

.mode-badge {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, rgba(63, 168, 255, 0.15), rgba(119, 68, 255, 0.15));
  backdrop-filter: blur(10px);
  border: 1px solid rgba(63, 168, 255, 0.3);
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  color: #3fa8ff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 1000;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.mode-badge.mode-realtime {
  background: linear-gradient(135deg, rgba(63, 168, 255, 0.15), rgba(119, 68, 255, 0.15));
  border-color: rgba(63, 168, 255, 0.3);
  color: #3fa8ff;
}

.mode-badge.mode-verbatim {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(236, 72, 153, 0.15));
  border-color: rgba(168, 85, 247, 0.3);
  color: #a855f7;
}

.mode-badge.mode-recitation {
  background: linear-gradient(135deg, rgba(251, 146, 60, 0.15), rgba(253, 224, 71, 0.15));
  border-color: rgba(251, 146, 60, 0.3);
  color: #fb923c;
}

#modeIcon {
  font-size: 16px;
  line-height: 1;
}

#modeText {
  text-transform: capitalize;
}

/* Mobile responsive */
@media (max-width: 640px) {
  .mode-badge {
    font-size: 12px;
    padding: 6px 12px;
    top: 5px;
  }
  
  #modeIcon {
    font-size: 14px;
  }
}