/**
 * Audio Converter - Frontend Styles
 * Clean, modern design for audio conversion interface
 */

:root {
    --ac-primary-color: #6f42c1;
    --ac-success-color: #28a745;
    --ac-warning-color: #ffc107;
    --ac-danger-color: #dc3545;
    --ac-info-color: #17a2b8;
    --ac-dark-color: #343a40;
    --ac-light-color: #f8f9fa;
    --ac-border-color: #e9ecef;
    --ac-text-color: #495057;
    --ac-text-muted: #6c757d;
    --ac-border-radius: 6px;
    --ac-transition: all 0.2s ease;
    --ac-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --ac-shadow-hover: 0 4px 12px rgba(0,0,0,0.15);
    --ac-audio-color: #8e44ad;
    --ac-audio-light: #e8d5f2;
}

.audio-converter-container {
    max-width: 800px;
    margin: 0 auto;
    background: #ffffff;
    font-size: 14px;
    line-height: 1.5;
    color: var(--ac-text-color);
}

.audio-converter-container * {
    box-sizing: border-box;
}

.audio-converter-container .converter-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--ac-border-color);
}

.audio-converter-container .converter-title {
    margin: 0 0 8px;
    font-size: 24px;
    font-weight: 600;
    color: var(--ac-audio-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.audio-converter-container .converter-icon {
    font-size: 40px;
    margin-bottom: 15px;
    color: var(--ac-audio-color);
}

.audio-converter-container h1.converter-title {
    margin-bottom: 0 !important;
}

.audio-converter-container .converter-subtitle {
    margin: 0;
    color: var(--ac-text-muted);
    font-size: 16px;
}

.audio-converter-container .converter-upload-section {
    margin-bottom: 30px;
}

.audio-converter-container .upload-area {
    border: 2px dashed var(--ac-audio-color);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    transition: var(--ac-transition);
    cursor: pointer;
    position: relative;
    min-height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.audio-converter-container .upload-area:hover {
    border-color: var(--ac-audio-color);
    transform: translateY(-2px);
}

.audio-converter-container .upload-area.dragover {
    border-color: var(--ac-success-color);
    background: #f8fff9;
    border-style: solid;
}

.audio-converter-container .upload-area.uploading {
    pointer-events: none;
    opacity: 0.7;
}

.audio-converter-container .upload-content {
    width: 100%;
}

.audio-converter-container .upload-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
    color: var(--ac-audio-color);
}

.audio-converter-container .upload-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--ac-audio-color);
    margin-bottom: 8px;
}

.audio-converter-container .upload-subtext {
    color: var(--ac-text-muted);
    margin-bottom: 12px;
}

.audio-converter-container .upload-formats {
    font-size: 12px;
    color: #868e96;
    margin-top: 8px;
}

.audio-converter-container .formats-more {
    font-style: italic;
}

.audio-converter-container .file-input {
    position: absolute !important;
    left: 0 !important;
    top: 0 !important;
    width: 100% !important;
    height: 100% !important;
    opacity: 0 !important;
    cursor: pointer !important;
    z-index: 1 !important;
}

.audio-converter-container .upload-progress,
.audio-converter-container .progress-container {
    margin-top: 20px;
    padding: 16px;
    background: var(--ac-light-color);
    border-radius: var(--ac-border-radius);
    border: 1px solid var(--ac-border-color);
}

.audio-converter-container .progress-bar {
    width: 100%;
    height: 8px;
    background: var(--ac-border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.audio-converter-container .conversion-progress-section .progress-bar {
    height: 12px;
    margin-bottom: 12px;
}

.audio-converter-container .progress-fill {
    height: 100%;
    background: var(--ac-audio-color);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

.audio-converter-container .progress-text {
    text-align: center;
    font-weight: 500;
    color: var(--ac-text-color);
    font-size: 13px;
}

.audio-converter-container .progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.audio-converter-container .progress-percentage {
    font-weight: 600;
    color: var(--ac-audio-color);
    font-size: 16px;
}

.audio-converter-container .file-info-section {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--ac-audio-light);
    border-radius: var(--ac-border-radius);
    border: 1px solid #c8a2d8;
}

.audio-converter-container .section-title {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ac-audio-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.audio-converter-container .section-icon {
    font-size: 18px;
}

.audio-converter-container .file-details,
.audio-converter-container .progress-details,
.audio-converter-container .success-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
}

.audio-converter-container .detail-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #c8a2d8;
}

.audio-converter-container .detail-item:last-child {
    border-bottom: none;
}

.audio-converter-container .detail-label {
    font-weight: 600;
    color: var(--ac-audio-color);
}

.audio-converter-container .detail-value {
    color: var(--ac-text-color);
    text-align: right;
}

/* Audio Trim Section */
.audio-converter-container .audio-trim-section {
    margin-bottom: 30px;
    padding: 20px;
    background: #fff5e6;
    border-radius: var(--ac-border-radius);
    border: 1px solid #ffcc80;
}

.audio-converter-container .audio-trim-section .section-title {
    color: #e65100;
}

.audio-converter-container .trim-controls {
    margin-top: 15px;
}

.audio-converter-container .audio-player-container {
    margin-bottom: 15px;
}

.audio-converter-container .audio-player-container audio {
    width: 100%;
    background: #fff;
    border-radius: 4px;
}

.audio-converter-container .trim-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.audio-converter-container .input-group {
    display: flex;
    flex-direction: column;
}

.audio-converter-container .input-group label {
    margin-bottom: 5px;
    font-weight: 500;
    color: #e65100;
    font-size: 13px;
}

.audio-converter-container .conversion-options-section {
    margin-bottom: 30px;
}

.audio-converter-container .options-group {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--ac-light-color);
    border-radius: var(--ac-border-radius);
    border: 1px solid var(--ac-border-color);
}

.audio-converter-container .group-title {
    margin: 0 0 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ac-text-color);
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
}

.audio-converter-container .advanced-group .group-title {
    margin: 0;
}

.audio-converter-container .group-icon {
    font-size: 18px;
}

.audio-converter-container .options-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.audio-converter-container .form-group {
    margin-bottom: 16px;
}

.audio-converter-container .form-group:last-child {
    margin-bottom: 0;
}

.audio-converter-container .form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--ac-text-color);
}

.audio-converter-container .form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    font-size: 14px;
    color: var(--ac-text-color);
    background: #ffffff;
    transition: border-color 0.2s ease;
}

.audio-converter-container .form-control:focus {
    outline: none;
    border-color: var(--ac-audio-color);
    box-shadow: 0 0 0 0.2rem rgba(111, 66, 193, 0.25);
}

/* Preset buttons */
.audio-converter-container .preset-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
}

.audio-converter-container .preset-btn {
    padding: 12px 16px;
    border: 1px solid #dee2e6;
    border-radius: var(--ac-border-radius);
    background: #ffffff;
    cursor: pointer;
    transition: var(--ac-transition);
    text-align: center;
    font-weight: 500;
    font-size: 13px;
}

.audio-converter-container .preset-btn:hover {
    border-color: var(--ac-audio-color);
    background: var(--ac-audio-light);
    transform: translateY(-1px);
}

.audio-converter-container .preset-btn.active {
    border-color: var(--ac-audio-color);
    background: var(--ac-audio-color);
    color: #ffffff;
}

.audio-converter-container .preset-name {
    display: block;
    font-weight: 600;
    margin-bottom: 4px;
}

.audio-converter-container .preset-desc {
    font-size: 11px;
    opacity: 0.8;
    line-height: 1.2;
}

.audio-converter-container .toggle-advanced {
    background: none;
    border: none;
    color: var(--ac-audio-color);
    cursor: pointer;
    font-size: 13px;
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.audio-converter-container .toggle-advanced:hover {
    background: rgba(111, 66, 193, 0.1);
}

.audio-converter-container .toggle-icon {
    transition: transform 0.2s ease;
    font-size: 10px;
}

.audio-converter-container .toggle-advanced.expanded .toggle-icon {
    transform: rotate(180deg);
}

.audio-converter-container .advanced-options {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #dee2e6;
}

.audio-converter-container .convert-button,
.audio-converter-container .download-button,
.audio-converter-container .convert-another-button,
.audio-converter-container .retry-button {
    border: none;
    border-radius: var(--ac-border-radius);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--ac-transition);
    align-items: center;
    text-decoration: none;
    padding: 12px 24px;
	max-width: 100% !important;
	width: 100%;
	display: block;
}

.audio-converter-container .convert-button {
    background: var(--ac-audio-color);
    color: #ffffff;
    padding: 16px 32px;
    font-size: 16px;
    width: 100%;
    justify-content: center;
    gap: 8px;
    letter-spacing: 0.3px;
}

.audio-converter-container .convert-button:hover:not(:disabled) {
    background: #5a3296;
    transform: translateY(-1px);
}

.audio-converter-container .convert-button:active {
    transform: translateY(0);
}

.audio-converter-container .convert-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.audio-converter-container .convert-button.converting {
    background: var(--ac-warning-color);
    color: #212529;
}

.audio-converter-container .download-button {
    background: var(--ac-info-color);
    color: #ffffff;
}

.audio-converter-container .download-button:hover {
    background: #138496;
    transform: translateY(-1px);
}

.audio-converter-container .convert-another-button {
    background: var(--ac-text-muted);
    color: #ffffff;
}

.audio-converter-container .convert-another-button:hover {
    background: #5a6268;
    transform: translateY(-1px);
}

.audio-converter-container .retry-button {
    background: var(--ac-danger-color);
    color: #ffffff;
    padding: 10px 20px;
}

.audio-converter-container .retry-button:hover {
    background: #c82333;
    transform: translateY(-1px);
}

.audio-converter-container .button-icon {
    font-size: 18px;
}

.audio-converter-container .button-text {
    font-weight: 500;
}

.audio-converter-container .conversion-progress-section {
    margin-bottom: 30px;
    padding: 24px;
    background: var(--ac-light-color);
    border-radius: var(--ac-border-radius);
    border: 1px solid var(--ac-border-color);
}

.audio-converter-container .progress-details {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid #dee2e6;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.audio-converter-container .success-section {
    margin-bottom: 30px;
    padding: 20px;
    background: #d4edda;
    border-radius: var(--ac-border-radius);
    border: 1px solid #c3e6cb;
    text-align: center;
}

.audio-converter-container .success-title {
    margin: 0 0 12px;
    font-size: 20px;
    font-weight: 600;
    color: #155724;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.audio-converter-container .success-icon {
    font-size: 24px;
}

.audio-converter-container .success-message {
    margin: 0 0 20px;
    color: #155724;
    font-size: 16px;
}

.audio-converter-container .success-details {
    margin-bottom: 24px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 4px;
    text-align: left;
}

.audio-converter-container .success-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
	flex-wrap: nowrap;
}

.audio-converter-container .error-section {
    margin-bottom: 30px;
    padding: 24px;
    background: #f8d7da;
    border-radius: var(--ac-border-radius);
    border: 1px solid #f5c6cb;
    text-align: center;
}

.audio-converter-container .error-title {
    margin: 0 0 12px;
    font-size: 18px;
    font-weight: 600;
    color: #721c24;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.audio-converter-container .error-icon {
    font-size: 20px;
}

.audio-converter-container .error-message {
    margin-bottom: 20px;
    color: #721c24;
    padding: 12px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 4px;
    font-size: 14px;
}

.audio-converter-container .supported-formats {
    margin: 20px 0 30px;
    text-align: center;
    padding: 20px;
    background: var(--ac-light-color);
    border-radius: 8px;
}

.audio-converter-container .supported-formats h3 {
    color: var(--ac-audio-color);
    margin-bottom: 20px;
    font-size: 1.3rem;
    font-weight: 600;
}

.audio-converter-container .format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
    max-width: 800px;
    margin: 0 auto;
}

.audio-converter-container .format-item {
    padding: 10px 15px;
    background: white;
    border: 1px solid var(--ac-border-color);
    border-radius: 4px;
    font-weight: 600;
    color: var(--ac-text-color);
    font-size: 0.9rem;
    transition: var(--ac-transition);
}

.audio-converter-container .format-item:hover {
    background: var(--ac-audio-light);
    border-color: var(--ac-audio-color);
    color: var(--ac-audio-color);
    transform: translateY(-1px);
}

.audio-converter-container .user-guide-section {
    margin-top: 20px;
}

.audio-converter-container .guide-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--ac-audio-color);
    margin-bottom: 20px;
    align-items: center;
    text-align: center;
    border-bottom: 1px solid var(--ac-border-color);
    padding-bottom: 15px;
}

.audio-converter-container .guide-icon {
    font-size: 24px;
}

.audio-converter-container .guide-group {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--ac-light-color);
    border-radius: 8px;
    border: 1px solid var(--ac-border-color);
}

.audio-converter-container .guide-subtitle {
    font-size: 18px;
    font-weight: 600;
    color: var(--ac-text-color);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.audio-converter-container .guide-emoji {
    font-size: 20px;
}

.audio-converter-container .guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.audio-converter-container .guide-item {
    background: white;
    padding: 16px;
    border-radius: 8px;
    border: 1px solid #dee2e6;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.audio-converter-container .guide-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--ac-shadow-hover);
}

.audio-converter-container .guide-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.audio-converter-container .guide-item-header strong {
    color: var(--ac-dark-color);
    font-size: 16px;
}

.audio-converter-container .guide-badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.audio-converter-container .guide-badge.voice { background: #e3f2fd; color: #0277bd; }
.audio-converter-container .guide-badge.recommended { background: #d4edda; color: #155724; }
.audio-converter-container .guide-badge.quality { background: #e7e3ff; color: #4a148c; }
.audio-converter-container .guide-badge.premium { background: #fff3e0; color: #ef6c00; }
.audio-converter-container .guide-badge.podcast { background: #f3e5f5; color: #7b1fa2; }
.audio-converter-container .guide-badge.web { background: #e1f5fe; color: #0277bd; }
.audio-converter-container .guide-badge.compress { background: #fff3cd; color: #856404; }
.audio-converter-container .guide-badge.universal { background: #d4edda; color: #155724; }
.audio-converter-container .guide-badge.uncompressed { background: #fff8e1; color: #f57c00; }
.audio-converter-container .guide-badge.lossless { background: #e8f5e8; color: #2e7d32; }
.audio-converter-container .guide-badge.modern { background: #e3f2fd; color: #1565c0; }
.audio-converter-container .guide-badge.open { background: #e8f5e8; color: #388e3c; }
.audio-converter-container .guide-badge.apple { background: #f3e5f5; color: #7b1fa2; }
.audio-converter-container .guide-badge.cutting_edge { background: #ffebee; color: #c62828; }

.audio-converter-container .guide-item-desc {
    color: var(--ac-text-muted);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 10px;
}

.audio-converter-container .guide-item-usage {
    font-size: 13px;
    color: var(--ac-text-color);
    background: var(--ac-light-color);
    padding: 8px;
    border-left: 3px solid var(--ac-audio-color);
}

.audio-converter-container .guide-tips {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.audio-converter-container .guide-tip {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    background: white;
    border-radius: var(--ac-border-radius);
    border: 1px solid #dee2e6;
}

.audio-converter-container .tip-icon {
    font-size: 18px;
    margin-top: 2px;
    flex-shrink: 0;
}

.audio-converter-container .tip-content {
    flex: 1;
    font-size: 14px;
    color: var(--ac-text-color);
    line-height: 1.4;
}

.audio-converter-container .tip-content strong {
    color: var(--ac-dark-color);
    display: block;
    margin-bottom: 4px;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.audio-converter-container .conversion-options-section,
.audio-converter-container .conversion-progress-section,
.audio-converter-container .success-section,
.audio-converter-container .error-section {
    animation: fadeIn 0.3s ease;
}

.audio-converter-container .upload-area.uploading .upload-icon {
    animation: pulse 1.5s infinite;
}

.audio-converter-container .convert-button.converting .button-icon {
    animation: pulse 1s infinite;
}

.audio-converter-container .upload-area.upload-disabled {
    background: #f5f5f5 !important;
    border-color: #d6d6d6 !important;
    cursor: not-allowed !important;
    opacity: 0.6 !important;
    pointer-events: none !important;
}

.audio-converter-container .upload-area.upload-disabled .upload-text {
    color: #999 !important;
}

.audio-converter-container .upload-area.upload-disabled .upload-subtext {
    color: #bbb !important;
}

.audio-converter-container .upload-area.upload-disabled:hover {
    transform: none !important;
    border-color: #d6d6d6 !important;
    background: #f5f5f5 !important;
}

.audio-converter-container .form-control:not(input) {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e") !important;
    background-position: right 11px center !important;
    background-repeat: no-repeat !important;
    background-size: 25px 20px !important;
    padding-right: 45px !important;	
}

@media (max-width: 768px) {
    .audio-converter-container .converter-title {
        font-size: 20px;
    }
    
    .audio-converter-container .upload-area {
        padding: 30px 16px;
    }
    
    .audio-converter-container .upload-text {
        font-size: 16px;
    }
    
    .audio-converter-container .options-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .audio-converter-container .trim-inputs {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .audio-converter-container .preset-buttons {
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 8px;
    }
    
    .audio-converter-container .preset-btn {
        padding: 10px 12px;
        font-size: 12px;
    }
    
    .audio-converter-container .convert-button {
        padding: 14px 24px;
        font-size: 14px;
    }
    
    .audio-converter-container .success-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .audio-converter-container .download-button,
    .audio-converter-container .convert-another-button {
        width: 100%;
        justify-content: center;
    }
    
    .audio-converter-container .file-details,
    .audio-converter-container .progress-details,
    .audio-converter-container .success-details {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .audio-converter-container .format-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 8px;
    }
    
    .audio-converter-container .format-item {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    
    .audio-converter-container .guide-grid {
        grid-template-columns: 1fr;
    }
    
    .audio-converter-container .guide-item-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    
    .audio-converter-container .guide-subtitle {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .audio-converter-container .upload-area {
        padding: 24px 12px;
        min-height: 120px;
    }
    
    .audio-converter-container .upload-icon {
        font-size: 36px;
        margin-bottom: 12px;
    }
    
    .audio-converter-container .preset-buttons {
        grid-template-columns: 1fr;
    }
    
    .audio-converter-container .converter-title {
        font-size: 18px;
        flex-direction: column;
        gap: 4px;
    }
    
    .audio-converter-container .options-group {
        padding: 14px;
    }
    
    .audio-converter-container .group-title {
        font-size: 14px;
    }
    
    .audio-converter-container .format-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        gap: 6px;
    }
    
    .audio-converter-container .format-item {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
    
    .audio-converter-container .supported-formats h3 {
        font-size: 1.1rem;
    }
    
    .audio-converter-container .guide-tip {
        flex-direction: column;
        gap: 8px;
    }
    
    .audio-converter-container .tip-icon {
        align-self: flex-start;
    }
    
    .audio-converter-container .audio-player-container audio {
        height: 40px;
    }
}

@media print {
    .audio-converter-container {
        border: none;
        box-shadow: none;
    }
    
    .audio-converter-container .upload-area,
    .audio-converter-container .convert-button,
    .audio-converter-container .download-button,
    .audio-converter-container .convert-another-button,
    .audio-converter-container .retry-button {
        display: none;
    }
}

/* Theme variations */
.audio-converter-theme-dark {
    background: #2d3748;
    color: #e2e8f0;
}

.audio-converter-theme-dark .upload-area {
    background: #4a5568;
    border-color: var(--ac-audio-color);
    color: #e2e8f0;
}

.audio-converter-theme-dark .options-group {
    background: #4a5568;
    border-color: #718096;
}

.audio-converter-theme-dark .form-control {
    background: #2d3748;
    border-color: #718096;
    color: #e2e8f0;
}

.audio-converter-theme-minimal {
    border: none;
    box-shadow: none;
}

.audio-converter-theme-minimal .converter-header {
    margin-bottom: 20px;
    padding-bottom: 10px;
}

.audio-converter-theme-minimal .options-group {
    background: transparent;
    border: 1px solid #e2e8f0;
    padding: 15px;
}