/**
 * Styles CSS pour l'Admin Dashboard - Version Améliorée
 * La Couronne Royale - Agence Immobilière
 * Thème: Orange-grise (#b49049) - Design Moderne
 */

:root {
    --primary-color: #b49049;
    --primary-dark: #9a7a3e;
    --primary-light: #d4b56a;
    --primary-gradient: linear-gradient(135deg, #b49049 0%, #d4b56a 100%);
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    --gray-50: #fafbfc;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --box-shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --box-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
}

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

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: var(--gray-800);
    line-height: 1.6;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Page de connexion */
.login-page {
    background: var(--primary-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="10" cy="60" r="0.5" fill="rgba(255,255,255,0.05)"/><circle cx="90" cy="40" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.login-container {
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

.login-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    margin-bottom: var(--spacing-xl);
}

.login-logo {
    width: 150px;
    margin-bottom: var(--spacing-lg);
    object-fit: cover;
    box-shadow: var(--box-shadow-sm);
    transition: var(--transition);
}

.login-logo:hover {
    transform: scale(1.05);
}

.login-header h1 {
    color: var(--primary-color);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
}

.login-header p {
    color: var(--gray-600);
    font-size: 16px;
    font-weight: 500;
}

.login-form {
    text-align: left;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 14px;
    letter-spacing: 0.025em;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
    color: var(--gray-800);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(180, 144, 73, 0.1);
    transform: translateY(-1px);
}

.form-group input:hover,
.form-group textarea:hover,
.form-group select:hover {
    border-color: var(--gray-300);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.025em;
    min-height: 44px;
}

.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: var(--transition);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: var(--box-shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-300);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #20c997 100%);
    color: var(--white);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #fd7e14 100%);
    color: var(--dark-color);
}

.btn-warning:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #e74c3c 100%);
    color: var(--white);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.btn-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #6f42c1 100%);
    color: var(--white);
}

.btn-info:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
    min-height: 36px;
}

.btn-full {
    width: 100%;
}

.login-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
    text-align: center;
}

.login-footer p {
    color: var(--gray-600);
    font-size: 14px;
}

/* Alertes */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-lg);
    border: 1px solid transparent;
    font-weight: 500;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
}

/* Layout principal */
.admin-layout {
    display: flex;
    min-height: 100vh;
    background: var(--gray-50);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--white);
    box-shadow: var(--box-shadow-lg);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    border-right: 1px solid var(--gray-200);
    transition: var(--transition);
}

.sidebar-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
    text-align: center;
    color: var(--white);
}

.sidebar-logo {
    height: 120px;
    margin-bottom: var(--spacing-md);
    object-fit: cover;
    box-shadow: var(--box-shadow-sm);
    transition: var(--transition);
}

.sidebar-logo:hover {
    transform: scale(1.1);
    box-shadow: var(--box-shadow);
}

.sidebar-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.sidebar-nav {
    padding: var(--spacing-lg) 0;
}

.nav-item {
    margin-bottom: var(--spacing-xs);
    padding: 0 var(--spacing-md);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--gray-700);
    text-decoration: none;
    transition: var(--transition);
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: var(--transition);
}

.nav-link:hover {
    background: rgba(180, 144, 73, 0.1);
    color: var(--primary-color);
    transform: translateX(4px);
}

.nav-link:hover::before {
    transform: scaleY(1);
}

.nav-link.active {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: var(--box-shadow-sm);
}

.nav-link.active::before {
    transform: scaleY(1);
    background: rgba(255, 255, 255, 0.3);
}

.nav-icon {
    margin-right: var(--spacing-md);
    font-size: 18px;
    width: 20px;
    text-align: center;
}

/* Contenu principal */
.main-content {
    flex: 1;
    margin-left: 280px;
    background: var(--gray-50);
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--white);
    padding: var(--spacing-lg) var(--spacing-xl);
    box-shadow: var(--box-shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: -0.5px;
    margin: 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.user-info:hover {
    background: var(--gray-200);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 16px;
    box-shadow: var(--box-shadow-sm);
}

.logout-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--danger-color);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.logout-btn:hover {
    background: #c82333;
    transform: translateY(-1px);
    box-shadow: var(--box-shadow-sm);
}

/* Contenu */
.content {
    padding: var(--spacing-xl);
    max-width: 1400px;
    margin: 0 auto;
}

/* Cartes */
.card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-sm);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--box-shadow);
    transform: translateY(-2px);
}

.card-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
}

.card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0;
    letter-spacing: -0.25px;
}

.card-body {
    padding: var(--spacing-xl);
}

/* Tableaux */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--gray-200);
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 0;
    background: var(--white);
}

.table th,
.table td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    background: var(--gray-50);
    font-weight: 700;
    color: var(--gray-700);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
    z-index: 10;
}

.table tbody tr {
    transition: var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--gray-50);
    transform: scale(1.01);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Statistiques */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-sm);
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow);
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.stat-label {
    color: var(--gray-600);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Boutons d'action */
.btn-group {
    display: flex;
    gap: var(--spacing-sm);
}

/* Formulaires */
.form-row {
    display: flex;
    align-items: center;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-col {
    flex: 1;
}

.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-family: inherit;
    resize: vertical;
    min-height: 120px;
    transition: var(--transition);
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(180, 144, 73, 0.1);
    transform: translateY(-1px);
}

/* Upload d'images */
.image-upload {
    border: 2px dashed var(--gray-300);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition);
    background: var(--gray-50);
}

.image-upload:hover {
    border-color: var(--primary-color);
    background: rgba(180, 144, 73, 0.05);
    transform: translateY(-2px);
}

.image-upload input[type="file"] {
    display: none;
}

.image-upload-label {
    cursor: pointer;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 16px;
    display: block;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.image-upload-label:hover {
    background: rgba(180, 144, 73, 0.1);
}

.image-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.image-preview-item {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    border: 2px solid var(--gray-200);
    transition: var(--transition);
}

.image-preview-item:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.image-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-preview-item .remove-image {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--danger-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    opacity: 0.8;
}

.image-preview-item .remove-image:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* Upload de vidéos */
.video-upload {
    border: 2px dashed var(--gray-300);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition);
    background: var(--gray-50);
}

.video-upload:hover {
    border-color: var(--info-color);
    background: rgba(23, 162, 184, 0.05);
    transform: translateY(-2px);
}

.video-upload input[type="file"] {
    display: none;
}

.video-upload-label {
    cursor: pointer;
    color: var(--info-color);
    font-weight: 600;
    font-size: 16px;
    display: block;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.video-upload-label:hover {
    background: rgba(23, 162, 184, 0.1);
}

.video-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.video-preview-item {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    border: 2px solid var(--gray-200);
    transition: var(--transition);
    background: var(--gray-100);
}

.video-preview-item:hover {
    border-color: var(--info-color);
    transform: scale(1.05);
}

.video-preview-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-preview-item .video-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 32px;
    color: var(--info-color);
    opacity: 0.7;
}

.video-preview-item .remove-video {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--danger-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    opacity: 0.8;
}

.video-preview-item .remove-video:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* Upload de médias combinés (images et vidéos) */
.combined-media-upload {
    border: 2px dashed var(--gray-300);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition);
    background: var(--gray-50);
}

.combined-media-upload:hover {
    border-color: var(--primary-color);
    background: rgba(180, 144, 73, 0.05);
    transform: translateY(-2px);
}

.combined-media-upload input[type="file"] {
    display: none;
}

.combined-media-upload-label {
    cursor: pointer;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 16px;
    display: block;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.combined-media-upload-label:hover {
    background: rgba(180, 144, 73, 0.1);
}

.combined-media-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.combined-media-preview-item {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    border: 2px solid var(--gray-200);
    transition: var(--transition);
}

.combined-media-preview-item:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.combined-media-preview-item img,
.combined-media-preview-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.combined-media-preview-item .media-icon {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 600;
}

.combined-media-preview-item .remove-media {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--danger-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    opacity: 0.8;
}

.combined-media-preview-item .remove-media:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 11px;
    font-weight: 700;
    border-radius: var(--border-radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
}

.badge-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #20c997 100%);
    color: var(--white);
}

.badge-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #fd7e14 100%);
    color: var(--dark-color);
}

.badge-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #e74c3c 100%);
    color: var(--white);
}

.badge-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #6f42c1 100%);
    color: var(--white);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 30px;
    flex-wrap: wrap;
    padding: 20px 0;
}

.pagination a,
.pagination span {
    padding: 10px 14px;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    font-size: 14px;
    min-width: 40px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.pagination a:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(52, 144, 220, 0.3);
}

.pagination .current {
    background: var(--primary-gradient);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(52, 144, 220, 0.4);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .header {
        padding: var(--spacing-md);
    }
    
    .header-title {
        font-size: 20px;
    }
    
    .content {
        padding: var(--spacing-md);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .table-container {
        font-size: 12px;
    }
    
    .btn-group {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}