/* --- AI TTS Plugin Styles --- */
.ai-tts-container {
    --primary-color: #4F46E5;
    --primary-light: #6366F1;
    --primary-dark: #4338CA;
    --secondary-color: #8B5CF6;
    --light-bg: #F8FAFC;
    --border-color: #E2E8F0;
    --text-color: #1E293B;
    --text-light: #64748B;
    --success-color: #10B981;
    --error-color: #EF4444;
    --border-radius: 10px;
    --box-shadow: 0 4px 10px rgba(0, 0, 0, 0.04), 0 0 1px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient-primary: linear-gradient(135deg, #4F46E5, #7C3AED);
    --gradient-secondary: linear-gradient(135deg, #8B5CF6, #C084FC);
    --card-bg: #ffffff;
    --voice-alloy: #4F46E5;
    --voice-echo: #6366F1;
    --voice-fable: #8B5CF6;
    --voice-onyx: #333333;
    --voice-nova: #10B981;
    --voice-shimmer: #60A5FA;
    --voice-verse: #FBBF24;
    --voice-ash: #4B5563;
    --voice-sage: #059669;
    --voice-clover: #EC4899;
    
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--text-color);
    line-height: 1.5;
    box-sizing: border-box;
}
.ai-tts-container *, .ai-tts-container *::before, .ai-tts-container *::after {
    box-sizing: border-box;
}
.ai-tts-container .content {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
    position: relative;
}
.ai-tts-container .text-input-section, .ai-tts-container .audio-output-section {
    flex: 1;
    width: 50%;
}
.ai-tts-container .card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.6);
}
.ai-tts-container .card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06), 0 0 2px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}
.ai-tts-container .section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
}
.ai-tts-container .section-title i {
    margin: 0 0.75rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.1rem;
}
.ai-tts-container textarea {
    width: 100%;
    height: 180px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    resize: vertical;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    transition: var(--transition);
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.03);
    line-height: 1.6;
}
.ai-tts-container textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    background-color: white;
}
.ai-tts-container .text-stats {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}
.ai-tts-container .text-stat {
    margin: 0  1.5rem;
    display: flex;
    align-items: center;
}
.ai-tts-container .text-stat i {
    margin: 0  0.4rem;
    color: var(--primary-light);
}
.ai-tts-container .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    height: 2.75rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.3);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}
.ai-tts-container .btn:hover {
    color: white;
}
.ai-tts-container .btn:active {
    transform: translateY(1px);
    box-shadow: 0 1px 3px rgba(79, 70, 229, 0.2);
}
.ai-tts-container .btn-success {
    background: linear-gradient(135deg, #10B981, #059669);
    box-shadow: 0 2px 6px rgba(16, 185, 129, 0.3);
}
.ai-tts-container .btn-text {
    background: none;
    color: var(--primary-color);
    padding: 0;
    height: auto;
    font-weight: 500;
    box-shadow: none;
}
.ai-tts-container .btn i {
    margin:0 0.5rem;
}
.ai-tts-container .btn-danger {
    background: linear-gradient(135deg, #EF4444, #DC2626);
    box-shadow: 0 2px 6px rgba(239, 68, 68, 0.3);
}
.ai-tts-container .btn-sm {
    padding: 0.4rem 0.8rem;
    height: 2.2rem;
    font-size: 0.9rem;
}
.ai-tts-container .voice-style-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}
.ai-tts-container .voice-style-option input[type="radio"] {
    display: none;
}
.ai-tts-container .voice-style-option label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 0.3rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    background: white;
    text-align: center;
    font-size: 0.85rem;
    height: 100%;
}
.ai-tts-container .voice-style-option input[type="radio"]:checked + label {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}
.ai-tts-container .voice-style-icon {
    font-size: 2rem;
    margin-bottom: 0.2rem;
}
.ai-tts-container .voice-style-name {
    font-weight: 600;
    font-size: 0.8rem;
    margin-bottom: 0.2rem;
    line-height: 1.2;
}
.ai-tts-container .voice-style-desc {
    font-size: 0.7rem;
    color: var(--text-light);
    line-height: 1.1;
}
.ai-tts-container .custom-audio-player {
    width: 100%;
    margin-top: 0.75rem;
    border-radius: var(--border-radius);
    background: #F1F5F9;
    padding: 0.75rem;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}
.ai-tts-container audio {
    width: 100%;
    height: 50px;
}
.ai-tts-container .status {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    display: none;
    animation: fadeInUp 0.4s ease;
    font-weight: 500;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.ai-tts-container .status.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: #065F46;
    display: block;
    border-left: 3px solid var(--success-color);
}
.ai-tts-container .status.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #B91C1C;
    display: block;
    border-left: 3px solid var(--error-color);
}
.ai-tts-container .loading {
    display: none;
    align-items: center;
    margin: 1rem 0;
    font-size: 0.95rem;
    color: var(--text-light);
}
.ai-tts-container .loading .spinner {
    display: inline-block;
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid rgba(79, 70, 229, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
    margin-right: 0.6rem;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.ai-tts-container .history-section {
    margin-top: 1.25rem;
}
.ai-tts-container .history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}
.ai-tts-container .history-warning {
    background-color: rgba(250, 204, 21, 0.1);
    border-left: 3px solid #FACC15;
    padding: 0.6rem 0.75rem;
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    color: #854D0E;
    display: flex;
    align-items: center;
}
.ai-tts-container .history-warning i {
    margin-right: 0.5rem;
    color: #EAB308;
}
.ai-tts-container .history-container {
    max-height: 350px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-light) #F1F5F9;
}
.ai-tts-container .history-container::-webkit-scrollbar {
    width: 6px;
}
.ai-tts-container .history-container::-webkit-scrollbar-track {
    background: #F1F5F9;
    border-radius: 10px;
}
.ai-tts-container .history-container::-webkit-scrollbar-thumb {
    background-color: var(--primary-light);
    border-radius: 10px;
}
.ai-tts-container .history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    border-radius: 0.5rem;
}
.ai-tts-container .history-item:hover {
    background-color: rgba(99, 102, 241, 0.04);
}
.ai-tts-container .history-item:last-child {
    border-bottom: none;
}
.ai-tts-container .history-info {
    flex: 1;
    min-width: 0;
    padding-right: 1rem;
}
.ai-tts-container .history-timestamp {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 0.3rem;
}
.ai-tts-container .history-voice {
    font-size: 0.95rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    color: var(--primary-dark);
    margin-bottom: 0.2rem;
}
.ai-tts-container .history-voice::before {
    content: '';
    display: inline-block;
    width: 0.5rem;
    height: 0.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin-right: 0.5rem;
}
.ai-tts-container .history-text {
    font-size: 0.9rem;
    color: var(--text-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}
.ai-tts-container .no-history {
    color: var(--text-light);
    font-size: 0.95rem;
    text-align: center;
    padding: 1.5rem 0;
}
.ai-tts-container .badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-left: 0.5rem;
    background: var(--gradient-secondary);
    color: white;
    opacity: 0.9;
}
.ai-tts-container .preview-container {
    background: linear-gradient(135deg, #f9fafb, #f3f4f6);
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 1.25rem;
    position: relative;
    overflow: hidden;
    min-height: 250px;
    display: flex;
    flex-direction: column;
}
.ai-tts-container .preview-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.25rem;
}
.ai-tts-container .preview-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
}
.ai-tts-container .preview-title i {
    margin:0 0.75rem;
    font-size: 1.4rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.ai-tts-container .preview-icon {
    position: absolute;
    right: -15px;
    top: -15px;
    width: 80px;
    height: 80px;
    opacity: 0.05;
    transform: rotate(15deg);
    color: var(--primary-color);
}
.ai-tts-container .preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-light);
    border: 2px dashed #e5e7eb;
    border-radius: 10px;
    font-size: 0.95rem;
}
.ai-tts-container .preview-placeholder i {
    margin-bottom: 0.75rem;
    font-size: 2.2rem;
    opacity: 0.5;
}
.ai-tts-container .shortcut-hint {
    display: inline-flex;
    align-items: center;
    margin-left: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-light);
    vertical-align: middle;
}
.ai-tts-container .shortcut-hint kbd {
    background: #F1F5F9;
    padding: 0.1rem 0.3rem;
    border-radius: 3px;
    border: 1px solid #E2E8F0;
    margin: 0 0.2rem;
    font-family: monospace;
}
.ai-tts-container .divider {
    height: 1px;
    background: var(--border-color);
    margin: 1.25rem 0;
}
.ai-tts-container .input-section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
}
.ai-tts-container .input-section-title i {
    margin :0 0.5rem;
    color: var(--primary-color);
}
.ai-tts-container .current-voice-info {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    background: rgba(255, 255, 255, 0.7);
    padding: 0.6rem 0.75rem;
    border-radius: 8px;
}
.ai-tts-container .current-voice-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 0.6rem;
    color: white;
}
.ai-tts-container .current-voice-details {
    flex: 1;
}
.ai-tts-container .current-voice-name {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.1rem;
}
.ai-tts-container .current-voice-desc {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .ai-tts-container .content {
        flex-direction: column;
    }
    .ai-tts-container .text-input-section, .ai-tts-container .audio-output-section {
        width: 100%;
    }
}
@media (max-width: 768px) {
    .ai-tts-container .card {
        padding: 1rem;
    }
    .ai-tts-container .section-title {
        font-size: 1.1rem;
        margin-bottom: 0.75rem;
    }
    .ai-tts-container textarea {
        height: 160px;
    }
}