/* ========================================
   Variables CSS
   ======================================== */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    
    --sidebar-width: 280px;
    --header-height: 64px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Loader
   ======================================== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s, visibility 0.3s;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========================================
   Mobile Menu Button
   ======================================== */
.mobile-menu-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 10px;
    cursor: pointer;
    display: none;
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

.mobile-menu-btn:hover {
    background: var(--bg-tertiary);
    transform: scale(1.05);
}

.mobile-menu-btn i {
    width: 24px;
    height: 24px;
    color: var(--text-primary);
}

/* ========================================
   Sidebar
   ======================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    padding: 24px;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

.sidebar-close:hover {
    background: var(--bg-tertiary);
}

.sidebar-close i {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 32px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: none;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    text-align: left;
}

.nav-btn i {
    width: 20px;
    height: 20px;
}

.nav-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.sidebar-divider {
    height: 1px;
    background: var(--border-color);
    margin: 24px 0;
}

.sidebar-filters {
    margin-top: 24px;
}

.filter-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category-filters {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.category-item {
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.category-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 10px 12px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    text-align: left;
}

.category-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.category-btn.active {
    background: var(--primary-light);
    color: var(--primary-dark);
}

.category-btn i {
    width: 16px;
    height: 16px;
    transition: transform 0.3s;
}

.category-btn.expanded i {
    transform: rotate(180deg);
}

.subcategory-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: var(--bg-secondary);
}

.subcategory-list.expanded {
    max-height: 1000px;
}

.subcategory-item {
    padding-left: 16px;
}

.subcategory-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 8px 12px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    text-align: left;
}

.subcategory-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.subcategory-btn.active {
    color: var(--primary);
    font-weight: 500;
}

.type-list {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding-left: 16px;
}

.type-list.expanded {
    max-height: 500px;
}

.type-btn {
    display: block;
    width: 100%;
    padding: 6px 12px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 12px;
    color: var(--text-tertiary);
    transition: var(--transition-fast);
    text-align: left;
    border-radius: var(--border-radius-sm);
}

.type-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.type-btn.active {
    color: var(--primary);
    font-weight: 500;
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 32px;
    min-height: 100vh;
    transition: margin-left 0.3s;
}

/* ========================================
   Info Banner
   ======================================== */
.info-banner {
    background: linear-gradient(135deg, #EBF3FF 0%, #E0EAFF 100%);
    border: 1px solid #C7D9FF;
    border-radius: var(--border-radius);
    padding: 20px 24px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-sm);
}

.info-banner-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.info-banner-content p {
    color: #1E40AF;
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
    flex: 1;
}

.edit-btn {
    background: white;
    border: 1px solid #C7D9FF;
    border-radius: var(--border-radius-sm);
    padding: 8px;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.edit-btn:hover {
    background: #f0f4ff;
    transform: scale(1.05);
}

.edit-btn i {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

/* ========================================
   Search Section
   ======================================== */
.search-section {
    margin-bottom: 32px;
}

.search-container {
    position: relative;
    max-width: 600px;
    margin-bottom: 20px;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-tertiary);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 15px;
    color: var(--text-primary);
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.admin-controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.btn i {
    width: 18px;
    height: 18px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-sm i {
    width: 16px;
    height: 16px;
}

.full-width {
    width: 100%;
    justify-content: center;
}

/* ========================================
   Brands Grid
   ======================================== */
.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    animation: fadeIn 0.5s;
}

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

/* Brand Card */
.brand-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    transition: var(--transition);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.brand-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    transition: var(--transition);
}

.brand-card.status-ue::before {
    background: var(--success);
}

.brand-card.status-europe::before {
    background: var(--warning);
}

.brand-card.status-non-europeen::before {
    background: var(--danger);
}

.brand-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.brand-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.brand-card-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.brand-card-info p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.brand-card-actions {
    display: flex;
    gap: 4px;
}

.icon-btn {
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--bg-tertiary);
}

.icon-btn i {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
}

.icon-btn:hover i {
    color: var(--text-primary);
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    margin-top: 8px;
}

.status-ue .status-badge {
    background: #d1fae5;
    color: #065f46;
}

.status-europe .status-badge {
    background: #fef3c7;
    color: #92400e;
}

.status-non-europeen .status-badge {
    background: #fee2e2;
    color: #991b1b;
}

/* ========================================
   Content Pages
   ======================================== */
.content-page {
    animation: fadeIn 0.5s;
}

.page-container {
    max-width: 900px;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

.page-container h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

.page-container h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 32px;
    margin-bottom: 16px;
}

.page-container h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 24px;
    margin-bottom: 12px;
}

.page-container p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.page-container ul {
    list-style: disc;
    padding-left: 24px;
    margin-bottom: 16px;
}

.page-container li {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* ========================================
   Admin Login Button
   ======================================== */
.admin-login-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.admin-login-btn:hover {
    background: var(--primary);
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.admin-login-btn:hover i {
    color: white;
}

.admin-login-btn i {
    width: 24px;
    height: 24px;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

/* ========================================
   Modals
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    animation: fadeIn 0.2s;
}

.modal-overlay.active {
    display: block;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: 2001;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    display: none;
    opacity: 0;
    transition: var(--transition);
}

.modal.active {
    display: block;
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.modal-large {
    max-width: 800px;
}

.modal-content {
    padding: 32px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-tertiary);
}

.modal-close i {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.modal-body {
    margin-bottom: 24px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

/* ========================================
   Forms
   ======================================== */
.input,
.textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 15px;
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition-fast);
}

.input:focus,
.textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.form-section {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.category-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 16px;
}

.category-form-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.subcategory-form {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 16px;
    margin-bottom: 12px;
}

.type-input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

/* ========================================
   Toast
   ======================================== */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--text-primary);
    color: white;
    padding: 16px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    z-index: 3000;
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    max-width: 400px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--danger);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 260px;
    }
    
    .brands-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .sidebar-close {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    
    .search-container {
        max-width: 100%;
    }
    
    .brands-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .modal {
        width: 95%;
        max-height: 95vh;
    }
    
    .modal-content {
        padding: 24px;
    }
    
    .page-container {
        padding: 24px;
    }
    
    .admin-controls {
        flex-direction: column;
    }
    
    .admin-controls .btn {
        width: 100%;
        justify-content: center;
    }
    
    .info-banner-content {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 16px;
    }
    
    .page-container {
        padding: 20px;
    }
    
    .page-container h1 {
        font-size: 24px;
    }
    
    .modal-content {
        padding: 20px;
    }
}

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

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 16px;
}

.mb-4 {
    margin-bottom: 16px;
}

.gap-2 {
    gap: 8px;
}

/* ========================================
   Scrollbar Styling
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}