/* Custom Styles for Text-to-Speech Studio Utility */

.tts-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.5rem;
}

.tts-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 992px) {
    .tts-grid {
        grid-template-columns: 1fr;
    }
}

/* Card Styling */
.tts-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    position: relative;
    overflow: hidden;
}

.tts-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.tts-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tts-card-title i {
    color: var(--primary);
}

/* Presets & Insert Controls */
.tts-tools-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    background: var(--primary-light);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.tts-presets-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.preset-chip {
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.preset-chip:hover, .preset-chip.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    transform: translateY(-1px);
}

.pause-tags-group {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.pause-tag-btn {
    background: var(--bg-card);
    color: var(--primary);
    border: 1px dashed var(--primary);
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.pause-tag-btn:hover {
    background: var(--primary);
    color: #ffffff;
}

/* Editor Wrapper */
.tts-editor-wrapper {
    position: relative;
    width: 100%;
    min-height: 280px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--textarea-bg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.tts-editor-highlight-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1rem;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: transparent;
    pointer-events: none;
    overflow-y: auto;
    z-index: 1;
}

.tts-editor-highlight-layer mark {
    background-color: rgba(99, 102, 241, 0.35);
    color: transparent;
    border-radius: 4px;
    padding: 2px 0;
}

.tts-textarea {
    width: 100%;
    height: 100%;
    min-height: 280px;
    padding: 1rem;
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--textarea-color);
    background: transparent;
    border: none;
    outline: none;
    resize: vertical;
    z-index: 2;
}

.tts-editor-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.editor-stats {
    display: flex;
    gap: 1rem;
}

.editor-actions {
    display: flex;
    gap: 0.5rem;
}

.editor-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: var(--transition);
}

.editor-btn:hover {
    color: var(--primary);
    background: var(--primary-light);
}

/* Sidebar Settings Panel */
.tts-settings-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tts-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.tts-field label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.field-value {
    color: var(--primary);
    font-weight: 700;
}

.tts-select, .tts-input {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--textarea-bg);
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition);
}

.tts-select:focus, .tts-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* Voice Filter Tabs */
.voice-filter-tabs {
    display: flex;
    gap: 0.35rem;
    background: var(--textarea-bg);
    padding: 0.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.voice-tab {
    flex: 1;
    padding: 0.35rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.voice-tab.active {
    background: var(--bg-card);
    color: var(--primary);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

/* Range Sliders */
.tts-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border);
    outline: none;
    transition: var(--transition);
}

.tts-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.tts-slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    background: var(--primary-dark);
}

/* Player Bar & Visualizer */
.tts-player-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.visualizer-container {
    width: 100%;
    height: 100px;
    background: var(--textarea-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

#waveformCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.visualizer-status {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    background: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #64748b;
}

.status-dot.active {
    background: #10b981;
    box-shadow: 0 0 8px #10b981;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
    100% { opacity: 1; transform: scale(1); }
}

/* Action Controls Bar */
.tts-controls-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.primary-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn-convert {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #ffffff;
    font-weight: 700;
    font-size: 1rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
    transition: var(--transition);
}

.btn-convert:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-convert:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background: var(--textarea-bg);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

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

.export-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Audio Download Select Dropdown */
.format-select {
    padding: 0.7rem 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--textarea-bg);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    outline: none;
}

/* Informational Grid & FAQ Accordion */
.info-section {
    margin-top: 3rem;
}

.info-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 2rem;
}

.info-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.faq-section {
    max-width: 900px;
    margin: 0 auto;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 1.25rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question i {
    transition: var(--transition);
    color: var(--primary);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.25rem 1.25rem 1.25rem;
    font-size: 0.925rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}