/* ============================================
   Real-ESRGAN Upscaler - Styles
   ============================================ */

/* CSS Variables */
:root {
    /* Light Mode Colors */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    --background: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --border-hover: #cbd5e1;
    --success: #22c55e;
    --error: #ef4444;
    --warning: #f59e0b;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition: all 0.2s ease;
}

/* Dark Mode */
[data-theme="dark"] {
    --primary: #818cf8;
    --primary-hover: #6366f1;
    --primary-light: #312e81;
    --background: #0f172a;
    --card-bg: #1e293b;
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
    --border: #334155;
    --border-hover: #475569;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--background);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    color: var(--primary);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
}

/* Theme Toggle */
.theme-toggle {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    cursor: pointer;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}

.theme-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Settings Panel */
.settings-panel {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.settings-panel h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: var(--spacing-sm);
}

/* Model Cards */
.model-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.model-card {
    position: relative;
    cursor: pointer;
}

.model-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.card-content {
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 120px;
}

.model-card:hover .card-content {
    border-color: var(--border-hover);
}

.model-card.selected .card-content {
    border-color: var(--primary);
    background: var(--primary-light);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.card-title {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text);
    margin-bottom: var(--spacing-xs);
}

.card-description {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.card-model {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    font-family: monospace;
    opacity: 0.8;
}

/* Scale Options */
.scale-options {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.scale-option {
    flex: 1;
}

.scale-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.scale-btn {
    display: block;
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
}

.scale-option:hover .scale-btn {
    border-color: var(--border-hover);
}

.scale-option.selected .scale-btn {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkbox-custom {
    width: 1.25rem;
    height: 1.25rem;
    min-width: 1.25rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--background);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.checkbox-label input:checked ~ .checkbox-custom {
    background: var(--primary);
    border-color: var(--primary);
}

.checkbox-label input:checked ~ .checkbox-custom::after {
    content: '';
    width: 0.625rem;
    height: 0.625rem;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E") center/contain no-repeat;
}

.checkbox-content {
    display: flex;
    flex-direction: column;
}

.checkbox-title {
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--text);
}

.checkbox-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Quality Preset Options */
.preset-options {
    display: flex;
    gap: var(--spacing-sm);
}

.preset-option {
    flex: 1;
}

.preset-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.preset-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.preset-option:hover .preset-btn {
    border-color: var(--border-hover);
}

.preset-option.selected .preset-btn {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.preset-icon {
    font-size: 1.25rem;
}

.preset-name {
    font-size: 0.75rem;
    font-weight: 500;
}

/* Output Format Options */
.format-options {
    display: flex;
    gap: var(--spacing-sm);
}

.format-option {
    flex: 1;
}

.format-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.format-btn {
    display: block;
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--background);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
}

.format-option:hover .format-btn {
    border-color: var(--border-hover);
}

.format-option.selected .format-btn {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Quality Slider */
.quality-slider {
    width: 100%;
    height: 0.5rem;
    background: var(--background);
    border-radius: var(--radius-lg);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.quality-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 1.25rem;
    height: 1.25rem;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.quality-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.quality-slider::-moz-range-thumb {
    width: 1.25rem;
    height: 1.25rem;
    background: var(--primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.quality-slider::-moz-range-thumb:hover {
    transform: scale(1.1);
}

.quality-hint {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

#qualityGroup {
    display: none;
}

#qualityGroup.visible {
    display: block;
}

/* Upload Section */
.upload-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.upload-zone {
    background: var(--card-bg);
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: var(--transition);
}

.upload-zone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.upload-icon {
    width: 3rem;
    height: 3rem;
    margin: 0 auto var(--spacing-md);
    color: var(--text-secondary);
}

.upload-text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: var(--spacing-sm);
}

.upload-or {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: var(--spacing-sm) 0;
}

.browse-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: var(--transition);
}

.browse-btn:hover {
    background: var(--primary-hover);
}

.upload-hint {
    margin-top: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Files List */
.files-list {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border: 1px solid var(--border);
}

.files-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
}

.clear-all-btn {
    background: transparent;
    border: none;
    color: var(--error);
    font-size: 0.75rem;
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.clear-all-btn:hover {
    background: rgba(239, 68, 68, 0.1);
}

.files-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--background);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.file-name {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-name svg {
    width: 1rem;
    height: 1rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.file-size {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.file-remove {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.file-remove:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.file-remove svg {
    width: 1rem;
    height: 1rem;
}

/* Submit Button */
.submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md);
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

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

.submit-btn svg {
    width: 1.25rem;
    height: 1.25rem;
}

.model-info-text {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    font-family: monospace;
}

/* Progress Section */
.progress-section {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.progress-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
}

.job-id {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--background);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.progress-bar-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.progress-bar {
    flex: 1;
    height: 0.5rem;
    background: var(--background);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: var(--radius-lg);
    transition: width 0.3s ease;
    width: 0%;
}

.progress-percent {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    min-width: 3rem;
    text-align: right;
}

.files-status {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.file-status-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--background);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.status-icon {
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.status-icon.pending { color: var(--text-secondary); }
.status-icon.processing { color: var(--primary); }
.status-icon.completed { color: var(--success); }
.status-icon.failed { color: var(--error); }

.file-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.file-info-name {
    font-weight: 500;
    color: var(--text);
}

.file-info-detail {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Result Section */
.result-section {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    border: 1px solid var(--border);
}

.result-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.result-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-sm);
}

.result-summary {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.result-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.download-btn,
.new-upload-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: var(--transition);
}

.download-btn {
    background: var(--primary);
    color: white;
    border: none;
}

.download-btn:hover {
    background: var(--primary-hover);
}

.new-upload-btn {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.new-upload-btn:hover {
    background: var(--background);
    border-color: var(--border-hover);
}

.download-btn svg,
.new-upload-btn svg {
    width: 1.125rem;
    height: 1.125rem;
}

/* Error Section */
.error-section {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    border: 1px solid var(--border);
}

.error-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.error-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--spacing-sm);
}

.error-message {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.retry-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.retry-btn:hover {
    background: var(--primary-hover);
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

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

.result-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.result-thumbnail {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    cursor: pointer;
    background: var(--background);
}

.result-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.result-item:hover .result-thumbnail img {
    transform: scale(1.05);
}

.thumbnail-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    opacity: 0;
    transition: var(--transition);
    color: white;
}

.result-thumbnail:hover .thumbnail-overlay {
    opacity: 1;
}

.thumbnail-overlay svg {
    width: 2rem;
    height: 2rem;
}

.thumbnail-overlay span {
    font-size: 0.875rem;
    font-weight: 500;
}

.result-info {
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.result-filename {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-size {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.result-actions {
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
}

.result-download-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
}

.result-download-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.result-download-btn svg {
    width: 1rem;
    height: 1rem;
}

/* Preview Modal */
.preview-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(8px);
}

.modal-content {
    position: relative;
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    width: fit-content;
    height: fit-content;
    min-width: 300px;
    max-width: 90vw;
    max-height: 90vh;
    overflow: auto;
    display: flex;
    flex-direction: column;
    margin: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 50%;
    width: 2.5rem;
    height: 2.5rem;
    cursor: pointer;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.7);
}

.modal-close svg {
    width: 1.25rem;
    height: 1.25rem;
}

.modal-header {
    padding: var(--spacing-lg) var(--spacing-xl) var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
    padding-right: 3rem;
}

/* Comparison Container */
.comparison-container {
    position: relative;
    flex: 0 0 auto;
    width: auto;
    height: auto;
    max-width: 80vw;
    max-height: 70vh;
    overflow: visible;
    background: var(--background);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    padding: 0;
}

.comparison-image.before-image {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: calc(90vh - 150px);
    object-fit: contain;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.comparison-after-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    clip-path: inset(0 50% 0 0);
    transition: clip-path 0.05s ease-out;
}

.comparison-after-wrapper .comparison-image {
    display: block;
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    object-fit: contain;
}

.comparison-label {
    position: absolute;
    top: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    z-index: 5;
    pointer-events: none;
}

.comparison-label.before {
    left: var(--spacing-md);
}

.comparison-label.after {
    right: var(--spacing-md);
}

.comparison-after-wrapper {
    position: absolute;
    inset: 0;
    overflow: hidden;
    clip-path: inset(0 50% 0 0);
    transition: clip-path 0.05s ease-out;
}

.comparison-slider {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    cursor: ew-resize;
    z-index: 10;
    transform: translateX(-50%);
}

.slider-line {
    position: absolute;
    inset: 0;
    background: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.slider-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 3rem;
    height: 3rem;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    color: var(--text);
}

.slider-handle svg {
    width: 1.5rem;
    height: 1.5rem;
}

.modal-actions {
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: center;
}

.modal-download-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: var(--transition);
}

.modal-download-btn:hover {
    background: var(--primary-hover);
}

.modal-download-btn svg {
    width: 1.125rem;
    height: 1.125rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-size: 0.75rem;
}

/* Animations */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.spinning {
    animation: spin 1s linear infinite;
}

/* Responsive */
@media (max-width: 640px) {
    .model-cards {
        grid-template-columns: 1fr;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .download-btn,
    .new-upload-btn {
        width: 100%;
        justify-content: center;
    }
    
    .header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .results-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .comparison-container {
        aspect-ratio: auto;
    }
    
    .slider-handle {
        width: 2.5rem;
        height: 2.5rem;
    }
    
    .modal-content {
        max-height: 95vh;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

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