:root {
    --primary-color: #212529;
    --secondary-color: #DEE2E6;
    --background-color: #FFFFFF;
    --surface-color: #F8F9FA;
    --border-color: #E9ECEF;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 5px 20px rgba(0, 0, 0, 0.15);
    --radius: 12px;
    --transition: all 0.3s ease;
    --focus-outline: 2px solid var(--info-color);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    padding-bottom: 80px;
    min-height: 100vh;
    transition: var(--transition);
}

/* Drag and drop styles */
body.drag-over {
    background-color: rgba(23, 162, 184, 0.1);
}

body.drag-over::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(23, 162, 184, 0.2);
    border: 3px dashed var(--info-color);
    border-radius: var(--radius);
    margin: 20px;
    z-index: 9999;
    pointer-events: none;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    border-bottom: 2px solid #3498db;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-content h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 0.5px;
}

.header-controls {
    display: flex;
    gap: 1rem;
}

.lang-btn {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
    transition: all 0.3s ease;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.lang-btn:hover {
    background: linear-gradient(135deg, #2980b9 0%, #1f5f8b 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.4);
}

.lang-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    outline: none;
}

.lang-btn:hover {
    background: var(--text-secondary);
    transform: translateY(-2px);
}

.lang-btn:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.content-section {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
    border: 1px solid transparent;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-color);
}

.stat-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    transition: var(--transition);
}

.stat-card:hover .stat-icon {
    transform: scale(1.1);
}

.stat-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.action-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.action-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.action-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--info-color), var(--success-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.action-card:hover::before {
    transform: scaleX(1);
}

.action-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-color);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.action-card:hover .card-icon {
    transform: scale(1.1);
}

.action-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.action-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.primary-btn, .secondary-btn, .danger-btn, .cleanup-btn, .refresh-btn, .close-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    text-decoration: none;
    outline: none;
    position: relative;
    overflow: hidden;
}

.primary-btn::before, .secondary-btn::before, .danger-btn::before, .cleanup-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.primary-btn:hover::before, .secondary-btn:hover::before, .danger-btn:hover::before, .cleanup-btn:hover::before {
    left: 100%;
}

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

.primary-btn:hover {
    background: var(--text-secondary);
    transform: translateY(-2px);
}

.primary-btn:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

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

.secondary-btn:hover {
    background: var(--border-color);
    transform: translateY(-2px);
}

.secondary-btn:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

.danger-btn {
    background: var(--danger-color);
    color: white;
}

.danger-btn:hover {
    background: #c82333;
    transform: translateY(-2px);
}

.danger-btn:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

.cleanup-btn {
    background: var(--info-color);
    color: white;
}

.cleanup-btn:hover {
    background: #138496;
    transform: translateY(-2px);
}

.cleanup-btn:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

.refresh-btn, .close-btn {
    background: var(--secondary-color);
    color: var(--primary-color);
    padding: 0.5rem;
    width: 40px;
    height: 40px;
    justify-content: center;
}

.refresh-btn:hover, .close-btn:hover {
    background: var(--border-color);
    transform: rotate(180deg);
}

.refresh-btn:focus, .close-btn:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

.progress-container {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    border: 1px solid var(--border-color);
}

.progress-container h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 1rem;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--info-color));
    width: 0%;
    transition: width 0.3s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-header h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.category-card {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    outline: none;
}

.category-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: var(--border-color);
}

.category-card:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.category-icon {
    font-size: 2rem;
    transition: var(--transition);
}

.category-card:hover .category-icon {
    transform: scale(1.1);
}

.category-info h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.category-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.category-details {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-top: 2rem;
    border: 1px solid var(--border-color);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.details-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.files-list {
    display: grid;
    gap: 1rem;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: var(--radius);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    border: 1px solid transparent;
}

.file-item:hover {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    border-color: var(--border-color);
}

.file-icon {
    font-size: 1.5rem;
    width: 40px;
    text-align: center;
}

.file-info {
    flex: 1;
}

.file-info h4 {
    font-size: 1rem;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.file-info p {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

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

.file-action-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
    outline: none;
}

.file-action-btn:hover {
    background: var(--border-color);
    color: var(--danger-color);
}

.file-action-btn:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

.duplicates-list {
    display: grid;
    gap: 1.5rem;
}

.duplicate-group {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.duplicate-group:hover {
    box-shadow: var(--shadow-hover);
}

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

.duplicate-files {
    display: grid;
    gap: 1rem;
}

.duplicate-file {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: var(--radius);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    border: 1px solid transparent;
}

.duplicate-file:hover {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    border-color: var(--border-color);
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    background: var(--surface-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.empty-state h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.empty-state p {
    color: var(--text-secondary);
}

.storage-overview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.storage-chart {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.storage-chart canvas {
    border-radius: 50%;
    box-shadow: var(--shadow);
}

.storage-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

.storage-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: white;
    border-radius: var(--radius);
    box-shadow: 0 1px 5px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    border: 1px solid transparent;
}

.storage-stat:hover {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    border-color: var(--border-color);
}

.stat-label {
    font-weight: 600;
    color: var(--primary-color);
}

.stat-value {
    font-weight: 700;
    color: var(--info-color);
}

.large-files-section {
    margin-bottom: 2rem;
}

.large-files-section h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.large-files-list {
    display: grid;
    gap: 1rem;
}

.large-file-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--surface-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid transparent;
}

.large-file-item:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--border-color);
}

.cleanup-actions {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.cleanup-actions h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.cleanup-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.settings-groups {
    display: grid;
    gap: 2rem;
}

.settings-group {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.settings-group h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-item:hover {
    background: rgba(0, 0, 0, 0.02);
    margin: 0 -1rem;
    padding: 1rem;
    border-radius: var(--radius);
}

.setting-item label {
    font-weight: 500;
    color: var(--primary-color);
    cursor: pointer;
}

.setting-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--info-color);
}

.setting-item input[type="number"] {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 100px;
    text-align: center;
    outline: none;
    transition: var(--transition);
}

.setting-item input[type="number"]:focus {
    border-color: var(--info-color);
    box-shadow: 0 0 0 2px rgba(23, 162, 184, 0.2);
}

.setting-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.faq-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.faq-section h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 2rem;
    text-align: center;
}

.faq-container {
    display: grid;
    gap: 1rem;
}

.faq-item {
    background: var(--surface-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-hover);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    transition: var(--transition);
    outline: none;
}

.faq-question:hover {
    background: var(--border-color);
}

.faq-question:focus {
    outline: var(--focus-outline);
    outline-offset: -2px;
}

.faq-question[aria-expanded="true"] {
    background: var(--border-color);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-icon {
    font-size: 1.2rem;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.6;
    animation: fadeIn 0.3s ease-in-out;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer[hidden] {
    max-height: 0;
    padding: 0 1.5rem;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(248, 249, 250, 0.95);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.8rem;
    transition: var(--transition);
    border-radius: var(--radius);
    min-width: 60px;
    outline: none;
}

.nav-item:hover {
    color: var(--primary-color);
    background: var(--border-color);
    transform: translateY(-2px);
}

.nav-item:focus {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

.nav-item.active {
    color: var(--primary-color);
    font-weight: 600;
    background: var(--border-color);
}

.nav-item i {
    font-size: 1.2rem;
    transition: var(--transition);
}

.nav-item:hover i {
    transform: scale(1.1);
}

footer {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    padding: 2rem 1rem;
    text-align: center;
    color: #ecf0f1;
    font-size: 0.9rem;
    border-top: 2px solid #3498db;
    margin-top: 3rem;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(52, 152, 219, 0.1) 50%, transparent 70%);
    animation: shimmer 3s infinite;
    pointer-events: none;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

footer a {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    z-index: 1;
}

footer a:hover {
    color: #5dade2;
    text-shadow: 0 0 8px rgba(52, 152, 219, 0.5);
    transform: scale(1.05);
}

footer a:active {
    transform: scale(0.95);
}

.footer-content {
    position: relative;
    z-index: 1;
}

.footer-content p {
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.6;
}

.footer-content p i {
    margin-right: 0.5rem;
    color: #3498db;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(52, 152, 219, 0.1);
    border-radius: var(--radius);
    border: 1px solid rgba(52, 152, 219, 0.2);
    transition: all 0.3s ease;
}

.footer-links a:hover {
    background: rgba(52, 152, 219, 0.2);
    border-color: rgba(52, 152, 219, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.footer-links a i {
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content h1 {
        font-size: 1.2rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .action-cards {
        grid-template-columns: 1fr;
    }
    
    .storage-overview {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .cleanup-options {
        flex-direction: column;
    }
    
    .setting-actions {
        flex-direction: column;
    }
    
    .duplicates-actions {
        margin-top: 1rem;
    }
    
    main {
        padding: 1rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .duplicate-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 0.5rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .action-card {
        padding: 1.5rem;
    }
    
    .nav-item {
        font-size: 0.7rem;
        min-width: 50px;
    }
    
    .nav-item i {
        font-size: 1rem;
    }

    .category-card {
        padding: 1rem;
    }

    .footer-links {
        gap: 1rem;
    }

    .footer-links a {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }

    .file-item, .duplicate-file, .large-file-item {
        padding: 0.75rem;
    }

    .settings-group {
        padding: 1.5rem;
    }

    .faq-question {
        padding: 1rem;
        font-size: 1rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-color: #f8f9fa;
        --secondary-color: #495057;
        --background-color: #212529;
        --surface-color: #343a40;
        --border-color: #495057;
        --text-primary: #f8f9fa;
        --text-secondary: #adb5bd;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        --focus-outline: 3px solid #000000;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}