/* Import Google Font */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

/* --- Variable Definitions (Default Fallbacks) --- */
#ai-voice-player-wrapper {
  /* Light Theme Colors - Fallbacks (will be overridden by PHP) */
  --bg-light: #ffffff;
  --bg-secondary-light: #f1f5f9;
  --text-primary-light: #0f172a;
  --text-secondary-light: #64748b;
  --accent-light: #3b82f6;
  --accent-hover-light: #2563eb;
  --border-light: #e2e8f0;
  --summary-light: #6b7280;

  /* Dark Theme Colors - Fallbacks (will be overridden by PHP) */
  --bg-dark: #1e293b;
  --bg-secondary-dark: #334155;
  --text-primary-dark: #f1f5f9;
  --text-secondary-dark: #94a3b8;
  --accent-dark: #60a5fa;
  --accent-hover-dark: #3b82f6;
  --border-dark: #475569;
  --summary-dark: #9ca3af;
}

/* --- Main Container & Font --- */
#ai-voice-player-wrapper {
  font-family: "Inter", sans-serif;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1000;
}

#ai-voice-player-wrapper .ai-voice-player-container {
  background-color: var(--bg-light);
  color: var(--text-primary-light);
  border: 1px solid var(--border-light);
  transition: background-color 0.3s ease, color 0.3s ease,
    border-color 0.3s ease;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05),
    0 2px 4px -1px rgba(0, 0, 0, 0.03);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  width: 100%;
}

#ai-voice-player-wrapper .ai-voice-player-container[data-theme="dark"] {
  background-color: var(--bg-dark);
  color: var(--text-primary-dark);
  border-color: var(--border-dark);
}

#ai-voice-player-wrapper .player-inner-flex {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 1rem;
}

/* --- Action Button Base Styles --- */
#ai-voice-player-wrapper .action-button {
  background-color: var(--bg-secondary-light);
  color: var(--text-secondary-light);
  border: 1px solid var(--border-light);
  border-radius: 9999px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
  cursor: pointer;
  padding: 0;
  position: relative;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .action-button {
  background-color: var(--bg-secondary-dark);
  color: var(--text-secondary-dark);
  border-color: var(--border-dark);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

#ai-voice-player-wrapper .action-button:hover {
  background-color: var(--accent-light);
  color: white;
  transform: scale(1.05);
  box-shadow: 0 4px 6px rgba(59, 130, 246, 0.3);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .action-button:hover {
  background-color: var(--accent-dark);
  box-shadow: 0 4px 6px rgba(96, 165, 250, 0.2);
}

#ai-voice-player-wrapper .action-button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  background-color: #94a3b8 !important;
  transform: none !important;
}

/* --- Smaller Feature Buttons (Right Side) --- */
#ai-voice-player-wrapper .action-button.feature-btn {
  width: 40px;
  height: 40px;
}

/* --- Summary Button (Blue Icon) --- */
#ai-voice-player-wrapper .summary-button {
  background-color: var(--bg-secondary-light);
  color: #3b82f6; /* Blue icon */
  border: 1px solid var(--border-light);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .summary-button {
  background-color: var(--bg-secondary-dark);
  color: #60a5fa; /* Blue icon for dark mode */
  border-color: var(--border-dark);
}

#ai-voice-player-wrapper .summary-button:hover {
  background-color: var(--summary-light);
  color: white;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .summary-button:hover {
  background-color: var(--summary-dark);
  color: var(--bg-dark);
}

#ai-voice-player-wrapper .summary-button.generated {
  background-color: var(--summary-light);
  color: white;
  border-color: var(--summary-light);
  box-shadow: 0 4px 6px rgba(107, 114, 128, 0.3);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .summary-button.generated {
  background-color: var(--summary-dark);
  color: var(--bg-dark);
  border-color: var(--summary-dark);
  box-shadow: 0 4px 6px rgba(156, 163, 175, 0.2);
}

#ai-voice-player-wrapper .summary-icon-svg {
  display: block;
}

#ai-voice-player-wrapper .summary-check-svg {
  display: none;
}

#ai-voice-player-wrapper .summary-button.generated .summary-icon-svg {
  display: none;
}

#ai-voice-player-wrapper .summary-button.generated .summary-check-svg {
  display: block;
}

/* --- Play/Pause Button --- */
#ai-voice-player-wrapper .play-pause-button {
  background-color: var(--accent-light);
  color: white;
  border: none;
  box-shadow: 0 4px 6px rgba(59, 130, 246, 0.3);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .play-pause-button {
  background-color: var(--accent-dark);
  box-shadow: 0 4px 6px rgba(96, 165, 250, 0.2);
}

#ai-voice-player-wrapper .play-pause-button:hover {
  transform: scale(1.05);
  background-color: var(--accent-hover-light);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .play-pause-button:hover {
  background-color: var(--accent-hover-dark);
}

#ai-voice-player-wrapper .play-icon-svg {
  margin-left: 2px;
  display: block;
}

#ai-voice-player-wrapper .pause-icon-svg {
  display: none;
}

/* --- Info, Title & Progress --- */
#ai-voice-player-wrapper .info-progress-container {
  flex-grow: 1;
  overflow: hidden;
  min-width: 0;
}

#ai-voice-player-wrapper .title-logo-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#ai-voice-player-wrapper .article-title {
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
  padding-right: 1rem;
  line-height: 1.2;
  color: var(--text-primary-light);
  transition: color 0.3s ease;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .article-title {
  color: var(--text-primary-dark);
}

#ai-voice-player-wrapper .ai-logo-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary-light);
  font-size: 0.75rem;
  flex-shrink: 0;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .ai-logo-container {
  color: var(--text-secondary-dark);
}

#ai-voice-player-wrapper .progress-time-flex {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

#ai-voice-player-wrapper .time-display {
  font-size: 0.75rem;
  color: var(--text-secondary-light);
  flex-shrink: 0;
}

#ai-voice-player-wrapper .total-time-display {
  margin-right: 0;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .time-display {
  color: var(--text-secondary-dark);
}

#ai-voice-player-wrapper .progress-bar-container {
  flex-grow: 1;
  position: relative;
  height: 16px;
  display: flex;
  align-items: center;
}

/* --- Custom Progress Bar (Cross-Browser) --- */
#ai-voice-player-wrapper input[type="range"].progress-bar {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-secondary-light);
  outline: none;
  border-radius: 3px;
  cursor: pointer;
  margin: 0;
  padding: 0;
  position: absolute;
  border: none !important;
  background-color: var(--bg-secondary-light) !important;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  input[type="range"].progress-bar {
  background: var(--bg-secondary-dark);
  background-color: var(--bg-secondary-dark) !important;
}

/* Webkit Progress Track */
#ai-voice-player-wrapper
  input[type="range"].progress-bar::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;
  background: var(--bg-secondary-light);
  border-radius: 3px;
  outline: none;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  input[type="range"].progress-bar::-webkit-slider-runnable-track {
  background: var(--bg-secondary-dark);
}

/* Firefox Progress Track */
#ai-voice-player-wrapper input[type="range"].progress-bar::-moz-range-track {
  width: 100%;
  height: 6px;
  background: var(--bg-secondary-light);
  border-radius: 3px;
  outline: none;
  border: none;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  input[type="range"].progress-bar::-moz-range-track {
  background: var(--bg-secondary-dark);
}

/* Webkit Slider Thumb */
#ai-voice-player-wrapper
  input[type="range"].progress-bar::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent-light);
  border-radius: 50%;
  border: 2px solid var(--bg-light);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  margin-top: -5px;
  transition: transform 0.2s ease;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  input[type="range"].progress-bar::-webkit-slider-thumb {
  background: var(--accent-dark);
  border-color: var(--bg-dark);
}

/* Firefox Slider Thumb */
#ai-voice-player-wrapper input[type="range"].progress-bar::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--accent-light);
  border-radius: 50%;
  border: 2px solid var(--bg-light);
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  input[type="range"].progress-bar::-moz-range-thumb {
  background: var(--accent-dark);
  border-color: var(--bg-dark);
}

#ai-voice-player-wrapper
  input[type="range"].progress-bar:hover::-webkit-slider-thumb {
  transform: scale(1.1);
}

/* --- Action Controls --- */
#ai-voice-player-wrapper .action-controls-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

/* --- Feature Sections (Expandable) --- */
#ai-voice-player-wrapper .feature-section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
  animation: slideDown 0.3s ease-out;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-section {
  border-color: var(--border-dark);
}

#ai-voice-player-wrapper .feature-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

#ai-voice-player-wrapper .feature-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary-light);
  margin: 0;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-title {
  color: var(--text-primary-dark);
}

#ai-voice-player-wrapper .feature-close-btn {
  background: none;
  border: none;
  color: var(--text-secondary-light);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 0.25rem;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

#ai-voice-player-wrapper .feature-close-btn:hover {
  background-color: var(--bg-secondary-light);
  color: var(--text-primary-light);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-close-btn {
  color: var(--text-secondary-dark);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-close-btn:hover {
  background-color: var(--bg-secondary-dark);
  color: var(--text-primary-dark);
}

#ai-voice-player-wrapper .feature-content {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-primary-light);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-content {
  color: var(--text-primary-dark);
}

#ai-voice-player-wrapper .feature-note {
  margin-top: 12px;
  font-size: 13px;
  color: var(--text-secondary-light);
  font-style: italic;
  margin-bottom: 0;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-note {
  color: var(--text-secondary-dark);
}

/* --- Summary Content --- */
#ai-voice-player-wrapper .feature-content .takeaways-list {
  margin: 0;
  padding-left: 1.25rem;
  list-style-type: disc;
}

#ai-voice-player-wrapper .feature-content .takeaways-list li {
  margin-bottom: 0.5rem;
  color: var(--text-primary-light);
  line-height: 1.4;
  font-size: 0.95rem;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-content
  .takeaways-list
  li {
  color: var(--text-primary-dark);
}

/* --- Translate Feature --- */
#ai-voice-player-wrapper .language-selector {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

#ai-voice-player-wrapper .language-selector select {
  flex: 1;
  min-width: 200px;
  padding: 10px 14px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: var(--bg-secondary-light);
  color: var(--text-primary-light);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
}

#ai-voice-player-wrapper .language-selector select:focus {
  outline: none;
  border-color: var(--accent-light);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .language-selector
  select {
  border-color: var(--border-dark);
  background: var(--bg-secondary-dark);
  color: var(--text-primary-dark);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .language-selector
  select:focus {
  border-color: var(--accent-dark);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
}

#ai-voice-player-wrapper .translated-text {
  padding: 16px;
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  max-height: 300px;
  overflow-y: auto;
  line-height: 1.7;
  display: none;
}

#ai-voice-player-wrapper .translated-text.active {
  display: block;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .translated-text {
  background: var(--bg-secondary-dark);
  border-color: var(--border-dark);
}

#ai-voice-player-wrapper .feature-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  color: var(--text-secondary-light);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-loader {
  color: var(--text-secondary-dark);
}

#ai-voice-player-wrapper .feature-loader .spinner {
  width: 20px;
  height: 20px;
  border: 3px solid var(--bg-secondary-light);
  border-top-color: var(--accent-light);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .feature-loader
  .spinner {
  border-color: var(--bg-secondary-dark);
  border-top-color: var(--accent-dark);
}

/* --- Read Along Feature --- */
#ai-voice-player-wrapper .read-along-text {
  padding: 12px;
  background: var(--bg-secondary-light);
  border-radius: 8px;
  max-height: 300px;
  overflow-y: auto;
  line-height: 1.8;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .read-along-text {
  background: var(--bg-secondary-dark);
}

#ai-voice-player-wrapper .read-along-text .highlight {
  background: var(--accent-light);
  color: white;
  padding: 2px 4px;
  border-radius: 3px;
  animation: pulse 0.5s ease;
  transition: all 0.3s ease;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .read-along-text
  .highlight {
  background: var(--accent-dark);
  color: var(--bg-dark);
}

/* --- Ask AI Chat Feature --- */
#ai-voice-player-wrapper .chat-messages {
  max-height: 250px;
  overflow-y: auto;
  padding: 12px;
  background: var(--bg-secondary-light);
  border-radius: 8px;
  margin-bottom: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .chat-messages {
  background: var(--bg-secondary-dark);
}

#ai-voice-player-wrapper .chat-message {
  display: flex;
  gap: 10px;
  animation: slideIn 0.3s ease;
}

#ai-voice-player-wrapper .chat-message.user-message {
  flex-direction: row-reverse;
}

#ai-voice-player-wrapper .message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

#ai-voice-player-wrapper .message-avatar.user-avatar {
  background: var(--accent-light);
  color: white;
}

#ai-voice-player-wrapper .message-avatar.ai-avatar {
  background: var(--summary-light);
  color: white;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .message-avatar.user-avatar {
  background: var(--accent-dark);
  color: var(--bg-dark);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .message-avatar.ai-avatar {
  background: var(--summary-dark);
  color: var(--bg-dark);
}

#ai-voice-player-wrapper .message-content {
  flex: 1;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.5;
}

#ai-voice-player-wrapper .chat-message.user-message .message-content {
  background: var(--accent-light);
  color: white;
  border-bottom-right-radius: 4px;
}

#ai-voice-player-wrapper .chat-message.ai-message .message-content {
  background: var(--bg-light);
  color: var(--text-primary-light);
  border: 1px solid var(--border-light);
  border-bottom-left-radius: 4px;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .chat-message.user-message
  .message-content {
  background: var(--accent-dark);
  color: var(--bg-dark);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .chat-message.ai-message
  .message-content {
  background: var(--bg-secondary-dark);
  color: var(--text-primary-dark);
  border-color: var(--border-dark);
}

#ai-voice-player-wrapper .chat-input-container {
  display: flex;
  gap: 8px;
}

#ai-voice-player-wrapper .chat-input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: var(--bg-light);
  color: var(--text-primary-light);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s ease;
}

#ai-voice-player-wrapper .chat-input:focus {
  outline: none;
  border-color: var(--accent-light);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .chat-input {
  border-color: var(--border-dark);
  background: var(--bg-secondary-dark);
  color: var(--text-primary-dark);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .chat-input:focus {
  border-color: var(--accent-dark);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
}

#ai-voice-player-wrapper .send-btn {
  padding: 10px 20px;
  background: var(--accent-light);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 14px;
  font-family: inherit;
}

#ai-voice-player-wrapper .send-btn:hover {
  background: var(--accent-hover-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 6px rgba(59, 130, 246, 0.3);
}

#ai-voice-player-wrapper .send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .send-btn {
  background: var(--accent-dark);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .send-btn:hover {
  background: var(--accent-hover-dark);
}

/* --- Loader --- */
#ai-voice-player-wrapper .loader {
  display: none;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

/* --- Animations --- */
@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

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

/* --- Responsive Design --- */
@media (max-width: 640px) {
  #ai-voice-player-wrapper .ai-logo-container {
    display: none;
  }

  #ai-voice-player-wrapper .player-inner-flex {
    gap: 0.75rem;
  }

  #ai-voice-player-wrapper .feature-content {
    font-size: 0.8rem;
  }

  #ai-voice-player-wrapper .action-button {
    width: 42px;
    height: 42px;
  }

  #ai-voice-player-wrapper .action-button.feature-btn {
    width: 36px;
    height: 36px;
  }

  #ai-voice-player-wrapper .action-controls-container {
    gap: 0.375rem;
  }
}

/* --- Action Controls --- */
#ai-voice-player-wrapper .action-controls-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
  padding-left: 0.75rem;
  margin-left: 0.75rem;
  border-left: 2px solid var(--border-light);
}

#ai-voice-player-wrapper
  .ai-voice-player-container[data-theme="dark"]
  .action-controls-container {
  border-left-color: var(--border-dark);
}

/* --- Smaller Feature Buttons --- */
#ai-voice-player-wrapper .action-controls-container .action-button {
  width: 36px;
  height: 36px;
}

#ai-voice-player-wrapper .action-controls-container .action-button svg {
  width: 18px;
  height: 18px;
}