/* Enhanced TTS Styles for Word Highlighting */

/* TTS word highlighting */
.tts-word {
    transition: background-color 0.2s ease, color 0.2s ease;
    border-radius: 3px;
    padding: 1px 2px;
}

.tts-highlight {
    background-color: #ffeb3b !important;
    color: #000 !important;
    font-weight: bold;
    box-shadow: 0 2px 4px rgba(255, 235, 59, 0.3);
    animation: pulse 0.3s ease-in-out;
}

/* Deepgram TTS word highlighting */
.deepgram-word {
    transition: background-color 0.2s ease, color 0.2s ease;
    border-radius: 3px;
    padding: 1px 2px;
}

.deepgram-highlight {
    background-color: transparent !important;
    color: #007bff !important;
    font-weight: bold !important;
    text-shadow: none;
    box-shadow: none;
    animation: none;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes deepgramPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Dark mode support for highlighting */
.dark-mode .tts-highlight {
    background-color: #ffc107 !important;
    color: #000 !important;
    box-shadow: 0 2px 4px rgba(255, 193, 7, 0.4);
}

.dark-mode .deepgram-highlight {
    background-color: transparent !important;
    color: #007bff !important;
    font-weight: bold !important;
    text-shadow: none;
    box-shadow: none;
}

/* TTS Controls */
.tts-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0;
    flex-wrap: wrap;
}

.tts-voice-select {
    padding: 6px 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background: white;
    font-size: 14px;
    min-width: 200px;
    max-width: 300px;
}

.dark-mode .tts-voice-select {
    background: #333;
    border-color: #555;
    color: #fff;
}

.tts-voice-select option[data-local="false"] {
    color: #ff6b35;
    font-style: italic;
}

.dark-mode .tts-voice-select option[data-local="false"] {
    color: #ff8a65;
}

/* Deepgram voice options styling */
.tts-voice-select option[data-gender="female"] {
    color: #e91e63;
}

.tts-voice-select option[data-gender="male"] {
    color: #2196f3;
}

.dark-mode .tts-voice-select option[data-gender="female"] {
    color: #f48fb1;
}

.dark-mode .tts-voice-select option[data-gender="male"] {
    color: #64b5f6;
}

/* Button states */
#read-aloud-btn.active {
    background-color: #007bff;
    color: white;
}

#read-aloud-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Voice info tooltip */
.voice-info {
    font-size: 12px;
    color: #666;
    margin-top: 5px;
    font-style: italic;
}

.dark-mode .voice-info {
    color: #aaa;
}

.voice-warning {
    color: #ff6b35;
    font-size: 12px;
    margin-top: 5px;
    display: none;
}

.voice-warning.show {
    display: block;
}

/* Deepgram status indicator */
.deepgram-status {
    color: #00bcd4;
    font-size: 12px;
    margin-top: 5px;
    font-weight: bold;
}

.deepgram-status::before {
    content: "🌐 ";
}

.dark-mode .deepgram-status {
    color: #26c6da;
}

/* Loading spinner for Deepgram */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner {
    animation: spin 1s linear infinite;
}

/* Smooth scrolling for highlighted words */
.tts-word:target,
.tts-highlight,
.deepgram-word:target,
.deepgram-highlight {
    scroll-margin-top: 100px;
}

/* Desktop padding for legend items */
.legend-item {
    padding: 4px 8px;
    margin: 0 4px;
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .tts-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .tts-voice-select {
        min-width: unset;
        max-width: unset;
        width: 100%;
    }
    
    .tts-highlight,
    .deepgram-highlight {
        animation: none; /* Reduce animations on mobile for performance */
    }
    
    .legend-item {
        padding: 2px 4px;
        margin: 0 2px;
    }
}

/* Accessibility improvements */
.tts-word:focus,
.deepgram-word:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .tts-word,
    .tts-highlight,
    .deepgram-word,
    .deepgram-highlight {
        transition: none;
        animation: none;
    }
    
    .tts-highlight,
    .deepgram-highlight {
        transform: none;
    }
    
    .loading-spinner {
        animation: none;
    }
}