:root {
    --color-primary: #0066ff;
    --color-primary-dark: #0052cc;
    --color-primary-light: #e6f0ff;
    --color-secondary: #6c757d;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-border: #e2e8f0;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg-alt);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    color: var(--color-text-light);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 16px;
    padding-left: 16px;
    border-left: 1px solid var(--color-border);
}

.lang-link {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.lang-link.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.lang-divider {
    color: var(--color-border);
}

.page-header {
    background: white;
    border-bottom: 1px solid var(--color-border);
    padding: 40px 0;
}

.page-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.page-subtitle {
    font-size: 16px;
    color: var(--color-text-light);
}

.search-results-info h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.clear-search {
    display: inline-block;
    font-size: 14px;
    color: var(--color-danger);
    text-decoration: none;
    margin-bottom: 8px;
    transition: var(--transition);
}

.clear-search:hover {
    opacity: 0.8;
}

.results-count {
    font-size: 14px;
    color: var(--color-text-light);
}

.catalog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    padding: 40px 0;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-section {
    background: white;
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.sidebar-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.search-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.search-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-btn {
    padding: 10px;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.category-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
    margin-bottom: 4px;
}

.category-link:hover {
    background: var(--color-bg-alt);
}

.category-link.active {
    background: var(--color-primary);
    color: white;
}

.category-link .count {
    font-size: 12px;
    opacity: 0.7;
}

.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    margin-bottom: 24px;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.results-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.sort-select {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: white;
    cursor: pointer;
    transition: var(--transition);
}

.sort-select:hover {
    border-color: var(--color-primary);
}

.sort-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.products-row {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.product-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.product-link-row {
    display: flex;
    align-items: center;
    gap: 20px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.product-card:has(.product-link-row) {
    padding: 16px;
}

.product-image-row {
    width: 140px;
    height: 100px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-bg-alt);
}

.product-image-row img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info-row {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.product-details-row {
    flex: 1;
}

.product-category-badge {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.product-name-row {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

.product-price-box-row {
    text-align: right;
}

.product-price-label {
    font-size: 12px;
    color: var(--color-text-light);
    display: block;
    margin-bottom: 4px;
}

.product-price-row {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text);
}

.no-results {
    text-align: center;
    padding: 80px 20px;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.no-results h2 {
    font-size: 24px;
    margin-bottom: 12px;
}

.no-results p {
    font-size: 16px;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

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

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

.footer {
    background: white;
    border-top: 1px solid var(--color-border);
    padding: 40px 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
}

.footer-text {
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-link {
    font-size: 14px;
    color: var(--color-text-light);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--color-primary);
}

@media (max-width: 1024px) {
    .catalog-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        flex-direction: row;
        overflow-x: auto;
    }
    
    .sidebar-section {
        min-width: 250px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .toolbar {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }
    
    .toolbar-left {
        flex-direction: column;
        align-items: stretch;
    }
    
    .sort-select {
        width: 100%;
    }
    
    .product-link-row {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .product-image-row {
        width: 100%;
        height: 200px;
    }
    
    .product-info-row {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }
    
    .product-price-box-row {
        text-align: left;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 30px 0;
    }
    
    .catalog-layout {
        padding: 30px 0;
    }
}
/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 101;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        display: flex;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: all 0.3s ease;
        z-index: 100;
        gap: 0;
    }
    
    .nav-menu.active {
        max-height: 400px;
        opacity: 1;
    }
    
    .nav-link {
        width: 100%;
        padding: 12px 16px;
        margin-bottom: 8px;
        display: block;
    }
    
    .lang-switch {
        width: 100%;
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--color-border);
        padding-top: 16px;
        margin-top: 8px;
        justify-content: center;
    }
    
    body.menu-open {
        overflow: hidden;
    }
    
    .catalog-layout {
        grid-template-columns: 1fr;
        padding: 20px 0;
    }
    
    .sidebar {
        flex-direction: column;
        overflow-x: visible;
    }
    
    .sidebar-section {
        min-width: auto;
    }
    
    .page-header {
        padding: 30px 0;
    }
    
    .page-title {
        font-size: 24px;
    }
    
    .page-subtitle {
        font-size: 14px;
    }
}
.b2b-notice {
    background: #fff3cd;
    border-bottom: 2px solid #ffc107;
    padding: 15px 0;
}

.notice-box {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.notice-box h3 {
    margin: 0 0 10px 0;
    color: #856404;
    font-size: 18px;
}

.notice-box p {
    margin: 0 0 15px 0;
    color: #856404;
}

.purchase-procedure {
    margin-top: 10px;
}

.purchase-procedure summary {
    cursor: pointer;
    font-weight: bold;
    color: #856404;
    padding: 8px 0;
}

.purchase-procedure ol {
    margin: 10px 0 0 20px;
    color: #856404;
}

.purchase-procedure li {
    margin: 8px 0;
}

.vat-notice {
    font-size: 12px;
    color: #666;
    font-style: italic;
    margin-top: 4px;
}

.product-price-box-row {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}