/* ========================================
   Forever Smart 产品目录管理系统 - 样式表
   ======================================== */

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --dark: #1e293b;
    --gray: #64748b;
    --gray-light: #f1f5f9;
    --gray-border: #e2e8f0;
    --white: #ffffff;
    --radius: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, "Segoe UI", "Microsoft YaHei", Roboto, sans-serif;
    color: var(--dark);
    background: var(--gray-light);
    line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 头部导航 ===== */
.site-header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-header .container {
    display: flex;
    align-items: center;
    gap: 32px;
    height: 100px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
    color: var(--dark);
    flex-shrink: 0;
    text-decoration: none;
}
.logo-img {
    height: 76px;
    width: auto;
    max-height: 76px;
    object-fit: contain;
    display: block;
}
.logo-icon {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
}
.logo-text {
    font-size: 16px;
    font-weight: 700;
    color: var(--dark);
}
.main-nav {
    display: flex;
    gap: 4px;
    flex: 1;
}
.main-nav a {
    padding: 8px 16px;
    border-radius: 8px;
    color: var(--gray);
    font-size: 14px;
    font-weight: 500;
}
.main-nav a:hover, .main-nav a.active {
    background: var(--primary-light);
    color: var(--primary);
}
.search-box {
    display: flex;
    gap: 0;
    flex-shrink: 0;
}
.search-box input {
    border: 2px solid var(--gray-border);
    border-radius: 8px 0 0 8px;
    padding: 8px 14px;
    font-size: 14px;
    width: 180px;
    border-right: none;
    outline: none;
}
.search-box input:focus { border-color: var(--primary); }
.search-box button {
    background: var(--primary);
    color: var(--white);
    border: none;
    padding: 8px 16px;
    border-radius: 0 8px 8px 0;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
}
.search-box button:hover { background: var(--primary-dark); }

/* ===== Hero 区域 ===== */
.hero {
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #7c3aed 100%);
    color: var(--white);
    padding: 64px 0;
    text-align: center;
}
.hero h1 { font-size: 36px; font-weight: 800; margin-bottom: 12px; }
.hero p { font-size: 16px; opacity: 0.9; margin-bottom: 32px; }
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}
.hero-stats div { text-align: center; }
.hero-stats strong { display: block; font-size: 28px; font-weight: 800; }
.hero-stats span { font-size: 13px; opacity: 0.8; }

/* ===== 页面横幅 ===== */
.page-banner {
    background: var(--white);
    padding: 32px 0;
    border-bottom: 1px solid var(--gray-border);
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 12px;
}
.breadcrumb .current { color: var(--dark); font-weight: 500; }
.page-banner h1 { font-size: 28px; margin-bottom: 8px; }
.page-banner p { color: var(--gray); }
.count-badge {
    display: inline-block;
    margin-top: 12px;
    background: var(--primary-light);
    color: var(--primary);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* ===== 区块标题 ===== */
.section-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 28px;
    position: relative;
    padding-left: 16px;
}
.section-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 24px;
    background: var(--primary);
    border-radius: 3px;
}

/* ===== 分类网格 ===== */
.categories-section, .products-section, .company-info {
    padding: 56px 0;
}
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
}
.category-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray-border);
    display: block;
    color: inherit;
}
.category-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--primary);
}
.cat-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-light), #e0e7ff);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 16px;
}
.category-card h3 { font-size: 18px; margin-bottom: 8px; }
.category-card p { font-size: 14px; color: var(--gray); margin-bottom: 16px; }
.cat-count {
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
}

/* ===== 产品网格 ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}
.product-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray-border);
    display: block;
    color: inherit;
}
.product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.product-image {
    width: 100%;
    aspect-ratio: 1;
    background: var(--gray-light);
    overflow: hidden;
}
.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.product-card:hover .product-image img { transform: scale(1.05); }
.product-info { padding: 18px; }
.product-cat {
    font-size: 11px;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.product-info h3 {
    font-size: 17px;
    margin: 6px 0 4px;
}
.product-model {
    display: inline-block;
    font-size: 12px;
    color: var(--gray);
    background: var(--gray-light);
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 8px;
}
.product-desc {
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-link {
    font-size: 13px;
    color: var(--primary);
    font-weight: 600;
}
.tag {
    display: inline-block;
    font-size: 11px;
    background: var(--primary-light);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: 4px;
    margin: 2px 2px;
}

/* ===== 公司信息 ===== */
.company-info { background: var(--white); }
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}
.info-card {
    background: var(--gray-light);
    border-radius: var(--radius);
    padding: 28px;
}
.info-card h3 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--primary);
}
.info-card ul { list-style: none; }
.info-card li {
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-border);
    font-size: 14px;
}
.info-card li::before { content: '✓'; color: var(--success); margin-right: 8px; }

/* ===== 工厂照片画廊 ===== */
.factory-gallery { margin-top: 40px; }
.factory-gallery-title {
    font-size: 20px; font-weight: 700; color: var(--dark);
    margin-bottom: 20px; text-align: center;
    position: relative; padding-bottom: 12px;
}
.factory-gallery-title::after {
    content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 60px; height: 3px; background: var(--primary); border-radius: 2px;
}
.factory-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
}
.factory-gallery-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    aspect-ratio: 4 / 3;
}
.factory-gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.factory-gallery-item img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.4s;
}
.factory-gallery-item:hover img { transform: scale(1.05); }
.factory-gallery-caption {
    position: absolute; bottom: 0; left: 0; right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: #fff; padding: 20px 14px 10px;
    font-size: 13px; font-weight: 500;
    opacity: 0; transition: opacity 0.3s;
}
.factory-gallery-item:hover .factory-gallery-caption { opacity: 1; }

/* ===== 产品详情页 ===== */
.product-detail { padding: 32px 0; }
.detail-layout {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 40px;
    margin-bottom: 48px;
}
.detail-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--white);
    aspect-ratio: 1;
}
.detail-image img { width: 100%; height: 100%; object-fit: cover; }
.detail-image #mainProductImage {
    transition: opacity 0.2s ease;
}
/* ===== 前台图片画廊缩略图 ===== */
.image-thumbnails {
    display: flex;
    gap: 8px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.03);
    overflow-x: auto;
}
.image-thumbnails .thumb {
    width: 70px;
    height: 70px;
    flex-shrink: 0;
    border-radius: 8px;
    cursor: pointer;
    border: 3px solid transparent;
    transition: border-color 0.2s, transform 0.2s;
    object-fit: cover;
}
.image-thumbnails .thumb:hover {
    transform: scale(1.05);
}
.image-thumbnails .thumb.active {
    border-color: var(--primary);
}
.detail-info h1 { font-size: 28px; margin: 8px 0; }
.detail-model { font-size: 14px; color: var(--gray); margin-bottom: 12px; }
.detail-desc { font-size: 15px; color: var(--gray); margin-bottom: 24px; }
.detail-quick {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}
.quick-item {
    background: var(--white);
    border: 1px solid var(--gray-border);
    border-radius: 8px;
    padding: 12px;
}
.quick-item span {
    display: block;
    font-size: 12px;
    color: var(--gray);
    margin-bottom: 4px;
}
.quick-item strong { font-size: 14px; }
.detail-features h3 { font-size: 16px; margin-bottom: 12px; }
.feature-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.feature-list li {
    background: var(--primary-light);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
}
.detail-specs { margin-top: 16px; }
.spec-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.spec-table th, .spec-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--gray-border);
    text-align: left;
    font-size: 14px;
}
.spec-table th {
    background: var(--gray-light);
    width: 200px;
    color: var(--gray);
    font-weight: 600;
}
.spec-table .spec-full {
    background: var(--gray-light);
    font-weight: 600;
    color: var(--dark);
}
.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: none; }

/* ===== 结构化特性卡片 ===== */
.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}
.feature-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    background: var(--primary-light);
    border-radius: var(--radius);
    border: 1px solid rgba(0, 122, 255, 0.12);
    transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
.feature-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
}
.feature-body h4 {
    font-size: 14px;
    color: var(--dark);
    margin: 0 0 4px 0;
}
.feature-body p {
    font-size: 13px;
    color: var(--gray);
    margin: 0;
    line-height: 1.5;
}

/* ===== 结构化规格分组 ===== */
.spec-group-block {
    margin-bottom: 24px;
}
.spec-group-block:last-child {
    margin-bottom: 0;
}
.spec-group-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
    margin: 0 0 10px 0;
    padding-left: 12px;
    border-left: 4px solid var(--primary);
    line-height: 1.2;
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray);
}
.empty-state .btn { margin-top: 16px; }

/* ===== 文件下载 ===== */
.detail-files { margin-top: 60px; }
.file-download-list { display: flex; flex-direction: column; gap: 12px; }
.download-item {
    display: flex; align-items: center; gap: 16px; padding: 18px 24px;
    background: var(--white); border-radius: 12px; border: 1px solid var(--gray-border);
    box-shadow: var(--shadow-sm); transition: var(--transition);
}
.download-item:hover { box-shadow: var(--shadow); border-color: var(--primary); }
.download-icon { font-size: 36px; flex-shrink: 0; }
.download-info { flex: 1; min-width: 0; }
.download-info h4 { font-size: 15px; margin-bottom: 4px; color: var(--dark); }
.download-meta { font-size: 12px; color: var(--gray); display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.auth-badge {
    display: inline-block; padding: 2px 8px; border-radius: 10px;
    background: #fef3c7; color: #92400e; font-size: 11px; font-weight: 600;
}
.auth-badge.approved { background: #d1fae5; color: #065f46; }
.download-actions { display: flex; gap: 10px; flex-shrink: 0; }
.download-actions .btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-outline { border: 2px solid var(--gray-border); background: transparent; color: var(--dark); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid var(--gray-border);
    background: var(--white);
    color: var(--dark);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}
.btn:hover { background: var(--gray-light); }
.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-dark); }
.btn-block { width: 100%; text-align: center; }
.btn-sm {
    display: inline-block;
    padding: 5px 12px;
    font-size: 12px;
    border-radius: 6px;
    background: var(--gray-light);
    color: var(--dark);
    margin: 0 2px;
    transition: var(--transition);
}
.btn-sm:hover { background: var(--gray-border); }
.btn-edit { background: #fef3c7; color: #92400e; }
.btn-edit:hover { background: #fde68a; }
.btn-danger { background: #fee2e2; color: #991b1b; }
.btn-danger:hover { background: #fecaca; }

/* ===== 提示框 ===== */
.alert {
    padding: 12px 18px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
}
.alert-success { background: #d1fae5; color: #065f46; }
.alert-error { background: #fee2e2; color: #991b1b; }

/* ===== 登录页 ===== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 50%, #7c3aed 100%);
}
.login-container { width: 100%; max-width: 420px; padding: 24px; }
.login-box {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
}
.login-header { text-align: center; margin-bottom: 32px; }
.login-logo {
    height: 170px;
    max-height: 170px;
    width: auto;
    margin-bottom: 16px;
    object-fit: contain;
    display: block;
    margin-left: auto;
    margin-right: auto;
}
.login-header .logo-icon {
    width: 56px;
    height: 56px;
    font-size: 20px;
    margin: 0 auto 16px;
}
.login-header h1 { font-size: 24px; margin-bottom: 4px; }
.login-header p { font-size: 14px; color: var(--gray); }
.login-form .form-group { margin-bottom: 20px; }
.login-form label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
}
.login-form input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}
.login-form input:focus { border-color: var(--primary); }
.login-hint {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: var(--gray);
}
.login-hint code {
    background: var(--gray-light);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

/* ===== 后台管理布局 ===== */
.admin-body { background: var(--gray-light); }
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
    width: 240px;
    background: var(--dark);
    color: var(--white);
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.sidebar-logo {
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar-logo-img {
    height: 56px;
    max-height: 56px;
    width: auto;
    object-fit: contain;
    display: block;
}
.sidebar-nav { display: flex; flex-direction: column; padding: 12px; }
.sidebar-nav a {
    color: rgba(255,255,255,0.7);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 2px;
    transition: var(--transition);
}
.sidebar-nav a:hover, .sidebar-nav a.active {
    background: var(--primary);
    color: var(--white);
}
.admin-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.admin-topbar {
    background: var(--white);
    padding: 16px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}
.admin-topbar h1 { font-size: 20px; }
.admin-main { padding: 28px; flex: 1; }

/* 统计卡片 */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}
.stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
}
.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}
.stat-data strong { display: block; font-size: 26px; }
.stat-data span { font-size: 13px; color: var(--gray); }

/* 后台面板 */
.admin-panel {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
}
.admin-panel h2 { font-size: 18px; margin-bottom: 16px; }

/* 管理表格 */
.admin-table {
    width: 100%;
    border-collapse: collapse;
}
.admin-table th, .admin-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--gray-border);
    font-size: 14px;
}
.admin-table th {
    background: var(--gray-light);
    font-weight: 600;
    color: var(--gray);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.admin-table tr:hover td { background: var(--gray-light); }
.actions { white-space: nowrap; }

/* 筛选栏 */
.filter-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}
.filter-bar a {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    background: var(--white);
    border: 1px solid var(--gray-border);
    color: var(--gray);
}
.filter-bar a.active, .filter-bar a:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* 快捷操作 */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
}
.action-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px;
    background: var(--gray-light);
    border-radius: var(--radius);
    transition: var(--transition);
    color: var(--dark);
}
.action-card:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}
.action-icon { font-size: 28px; margin-bottom: 8px; }

/* 表单 */
.admin-form .form-section {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}
.admin-form h3 { font-size: 16px; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 1px solid var(--gray-border); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
}
.required { color: var(--danger); }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--gray-border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    font-family: inherit;
    transition: var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; }
.form-actions { display: flex; gap: 12px; }

/* ===== 页脚 ===== */
.site-footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 28px 0;
    text-align: center;
    font-size: 14px;
}
.site-footer a { color: var(--white); margin-left: 8px; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
    .detail-layout { grid-template-columns: 1fr; }
    .detail-image { max-width: 360px; margin: 0 auto; }
    .admin-sidebar { width: 60px; }
    .sidebar-logo { padding: 16px; justify-content: center; }
    .sidebar-logo span:not(.sidebar-logo-img) { display: none; }
    .sidebar-logo-img { height: 40px; }
    .sidebar-nav a { text-align: center; padding: 12px 8px; }
}
@media (max-width: 640px) {
    .site-header .container { flex-wrap: wrap; height: auto; padding: 12px; }
    .main-nav { order: 3; width: 100%; overflow-x: auto; }
    .search-box { margin-left: auto; }
    .search-box input { width: 130px; }
    .logo-img { height: 56px; max-height: 56px; }
    .hero h1 { font-size: 26px; }
    .hero-stats { gap: 24px; }
    .form-row { grid-template-columns: 1fr; }
    .admin-sidebar { display: none; }
}