/**
 * Text-to-Speech Styles
 * Datei: assets/css/text-to-speech.css
 */

.reader-tools-tts-container {
    position: fixed;
    bottom: 225px;
    right: 30px;
    z-index: 9995;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.reader-tools-tts-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    background-color: #4b5563;
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
}

.reader-tools-tts-button:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.reader-tools-tts-button.playing .tts-play-icon {
    display: none;
}

.reader-tools-tts-button.playing .tts-pause-icon {
    display: block !important;
}

.reader-tools-tts-button.playing .tts-text::before {
    content: 'Pausieren';
}

.reader-tools-tts-button.playing .tts-text {
    display: none;
}

.reader-tools-tts-button.playing::after {
    content: 'Pausieren';
}

.reader-tools-tts-controls {
    background: white;
    padding: 15px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    min-width: 250px;
}

.tts-control-group {
    margin-bottom: 12px;
}

.tts-control-group:last-of-type {
    margin-bottom: 15px;
}

.tts-control-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 6px;
}

.tts-speed {
    width: 100%;
    margin-bottom: 4px;
}

.tts-speed-value {
    display: inline-block;
    font-size: 12px;
    color: #6b7280;
    font-weight: 600;
}

.tts-voice-select {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid #e5e7eb;
    border-radius: 6px;
    font-size: 13px;
}

.tts-stop-btn {
    width: 100%;
    padding: 8px;
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.tts-stop-btn:hover {
    background: #dc2626;
}

.tts-progress-container {
    background: white;
    height: 4px;
    border-radius: 2px;
    overflow: hidden;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.tts-progress-bar {
    height: 100%;
    background: #10b981;
    width: 0%;
    transition: width 0.3s ease;
}

@media (max-width: 768px) {
    .reader-tools-tts-container {
        bottom: 200px;
        right: 20px;
    }
    
    .reader-tools-tts-button {
        padding: 10px 16px;
        font-size: 13px;
    }
    
    .reader-tools-tts-controls {
        min-width: 220px;
    }
}

body.dark-mode .reader-tools-tts-controls {
    background: #2d2d2d;
}

body.dark-mode .tts-control-group label {
    color: #f5f5f5;
}

body.dark-mode .tts-voice-select {
    background: #1a1a1a;
    color: #e5e5e5;
    border-color: #4b5563;
}

/* ------------------------------------------------------------------
   Satz-Highlighting waehrend des Vorlesens
   - CSS Custom Highlight API: ::highlight(rt-tts-active)
   - Fallback (eingefuegtes Span): .rt-tts-active
------------------------------------------------------------------ */
::highlight(rt-tts-active) {
    background-color: rgba(16, 185, 129, 0.25);
    color: inherit;
}

.rt-tts-active {
    background-color: rgba(16, 185, 129, 0.25);
    border-radius: 3px;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.15);
    transition: background-color 0.2s ease;
}

body.dark-mode .rt-tts-active {
    background-color: rgba(16, 185, 129, 0.35);
}

body.dark-mode ::highlight(rt-tts-active) {
    background-color: rgba(16, 185, 129, 0.35);
}

/* ------------------------------------------------------------------
   Barrierefreiheit: Bewegung reduzieren
------------------------------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
    .reader-tools-tts-button,
    .tts-stop-btn,
    .tts-progress-bar,
    .rt-tts-active {
        transition: none !important;
    }

    .reader-tools-tts-button:hover {
        transform: none !important;
    }
}