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

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.7;
    letter-spacing: 0.01em;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, rgba(26, 58, 95, 0.95) 0%, rgba(44, 82, 130, 0.9) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    padding: 15px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-icon {
    font-size: 2.5rem;
    color: #ff9900;
    margin-right: 15px;
}

.logo-text h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.logo-text p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.contact-info {
    text-align: right;
}

.phone {
    font-size: 1.5rem;
    font-weight: bold;
    color: #ff9900;
    cursor: pointer;
}

.address {
    font-size: 0.9rem;
    margin-top: 5px;
}

.email {
    font-size: 0.9rem;
    margin-top: 3px;
}

/* Navigation */
nav {
    background: linear-gradient(135deg, rgba(44, 82, 130, 0.92) 0%, rgba(26, 58, 95, 0.88) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 10px 0;
    position: relative;
    z-index: 999;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-menu {
    display: flex;
    list-style: none;
    justify-content: center;
}

.nav-menu li {
    margin: 0 15px;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-menu a:hover {
    background-color: #1a3a5f;
}

/* Mobile menu */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero section */
.hero {
    background: #1a3a5f;
    color: white;
    padding: 100px 0;
    text-align: center;
    min-height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 25px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 35px;
    opacity: 0.95;
    line-height: 1.7;
}

/* Buttons */
.btn {
    display: inline-block;
    background: linear-gradient(135deg, #ff9900 0%, #ffaa33 100%);
    color: white;
    padding: 14px 32px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(255, 153, 0, 0.25);
}

.btn:hover {
    background: linear-gradient(135deg, #e68a00 0%, #ff9900 100%);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 153, 0, 0.35);
}

.btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.btn-small {
    padding: 8px 20px;
    font-size: 0.9rem;
}

.btn-outline {
    background: rgba(255, 153, 0, 0.15);
    border: 2px solid #ff9900;
    color: #ff9900;
}

.btn-outline:hover {
    background: rgba(255, 153, 0, 0.25);
    border-color: #e68a00;
    color: #e68a00;
    transform: translateY(-2px);
}

/* Section titles */
.section-title {
    text-align: center;
    margin: 60px 0 40px;
    color: #1a3a5f;
    font-size: 2.2rem;
    position: relative;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-title:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #ff9900 0%, #ffaa33 100%);
    margin: 15px auto;
    border-radius: 2px;
}

/* Search and filters */
.search-filters {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    margin-bottom: 40px;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.search-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.search-input {
    flex: 1;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: #2c5282;
}

.filter-row {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-group {
    flex: 1;
    min-width: 150px;
}

.filter-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #1a3a5f;
}

.filter-group select,
.filter-group input {
    width: 100%;
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 0.9rem;
}

.filter-actions {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

/* Categories */
.categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.category-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.category-card.clickable {
    cursor: pointer;
}

.category-card.clickable:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.category-card:not(.clickable) {
    opacity: 0.7;
}

.category-icon {
    background-color: transparent;
    color: #1a3a5f;
    font-size: 3.5rem;
    padding: 2px;
    text-align: center;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-icon img {
    max-width: 100%;
    max-height: 136px;
    object-fit: contain;
}

.category-info {
    padding: 20px;
}

.category-info h3 {
    margin-bottom: 10px;
    color: #1a3a5f;
}

/* Products grid */
.products {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 35px;
    margin-bottom: 60px;
}

.product-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

/* Skeleton Loading Animation */
.product-card.skeleton {
    overflow: hidden;
}

.product-card.skeleton::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    100% {
        left: 100%;
    }
}

.product-img {
    height: 200px;
    background-color: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 3rem;
    position: relative;
}

.product-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: #ff9900;
    color: white;
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 0.8rem;
    font-weight: bold;
}

.product-stock {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: #4caf50;
    color: white;
    padding: 5px 10px;
    border-radius: 3px;
    font-size: 0.8rem;
}

.product-stock.low {
    background-color: #ff9800;
}

.product-stock.out {
    background-color: #f44336;
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    margin-bottom: 10px;
    color: #1a3a5f;
    font-size: 1.1rem;
}

.product-article {
    color: #666;
    font-size: 0.85rem;
    margin-bottom: 10px;
}

.product-description {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.product-price {
    color: #ff9900;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 15px 0;
}

.product-actions {
    display: flex;
    gap: 10px;
}

.product-actions .btn {
    flex: 1;
    text-align: center;
}

/* Cart */
.cart-icon {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: linear-gradient(135deg, #ff9900 0%, #ffaa33 100%);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    transition: all 0.3s ease;
}

.cart-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(255, 153, 0, 0.4);
}

.cart-icon.bounce {
    animation: cartBounce 0.5s ease;
}

@keyframes cartBounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.3); }
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: linear-gradient(135deg, #f44336 0%, #ef5350 100%);
    color: white;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
    box-shadow: 0 2px 8px rgba(244, 67, 54, 0.4);
    animation: countPulse 0.3s ease;
}

@keyframes countPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

/* Cart modal */
.cart-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
}

.cart-modal.active {
    display: flex;
    justify-content: flex-end;
}

.cart-content {
    background-color: white;
    width: 100%;
    max-width: 450px;
    height: 100%;
    display: flex;
    flex-direction: column;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

.cart-header {
    background-color: #1a3a5f;
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h2 {
    font-size: 1.5rem;
}

.cart-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.cart-item {
    display: flex;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid #e0e0e0;
}

.cart-item-img {
    width: 80px;
    height: 80px;
    background-color: #f0f0f0;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #666;
}

.cart-item-info {
    flex: 1;
}

.cart-item-info h4 {
    margin-bottom: 5px;
    color: #1a3a5f;
}

.cart-item-price {
    color: #ff9900;
    font-weight: bold;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.qty-btn {
    width: 30px;
    height: 30px;
    border: 1px solid #e0e0e0;
    background-color: white;
    cursor: pointer;
    font-size: 1rem;
    border-radius: 3px;
}

.qty-btn:hover {
    background-color: #f0f0f0;
}

.cart-item-remove {
    background: none;
    border: none;
    color: #f44336;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 5px;
}

.cart-footer {
    padding: 20px;
    border-top: 2px solid #e0e0e0;
    background-color: #f9f9f9;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 20px;
}

.cart-total span:last-child {
    color: #ff9900;
}

.cart-checkout .btn {
    width: 100%;
    text-align: center;
}

.cart-empty {
    text-align: center;
    padding: 40px 20px;
    color: #666;
}

.cart-empty i {
    font-size: 4rem;
    color: #ccc;
    margin-bottom: 20px;
}

/* Contact section */
.contact-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 50px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    margin-bottom: 60px;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
}

.contact-icon {
    background-color: #1a3a5f;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-right: 15px;
    flex-shrink: 0;
}

.work-hours {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    border-left: 5px solid #ff9900;
}

.work-hours h4 {
    margin-bottom: 10px;
    color: #1a3a5f;
}

/* Forms */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #1a3a5f;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.95);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #2c5282;
    box-shadow: 0 0 0 3px rgba(44, 82, 130, 0.1);
    background: white;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 35px;
    border-radius: 16px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: fadeIn 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h2 {
    color: #1a3a5f;
    font-size: 1.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}

/* Footer */
footer {
    background: linear-gradient(135deg, rgba(26, 58, 95, 0.98) 0%, rgba(44, 82, 130, 0.95) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    padding: 50px 0 25px;
    margin-top: 80px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    margin-bottom: 20px;
    font-size: 1.3rem;
    color: #ff9900;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #ddd;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #ff9900;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #2c5282;
    color: #ccc;
    font-size: 0.9rem;
}

/* Notifications */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 5px;
    color: white;
    font-weight: 500;
    z-index: 3000;
    animation: slideInRight 0.3s ease;
    max-width: 350px;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification.success {
    background-color: #4caf50;
}

.notification.error {
    background-color: #f44336;
}

.notification.info {
    background-color: #2196f3;
}

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #ff9900;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 30px 0;
}

.pagination button {
    padding: 10px 15px;
    border: 1px solid #e0e0e0;
    background-color: white;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s;
}

.pagination button:hover {
    background-color: #ff9900;
    border-color: #ff9900;
    color: white;
}

.pagination button.active {
    background-color: #ff9900;
    border-color: #ff9900;
    color: white;
}

.pagination button:disabled {
    background-color: #f5f5f5;
    cursor: not-allowed;
    opacity: 0.5;
}

/* Responsive */
@media (max-width: 992px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .logo {
        margin-bottom: 15px;
    }

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

    .hero h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
        position: absolute;
        top: 20px;
        right: 20px;
        color: white;
    }

    .nav-menu {
        flex-direction: column;
        display: none;
        width: 100%;
        text-align: center;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        margin: 10px 0;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

    .contact-section {
        padding: 20px;
    }

    .search-row,
    .filter-row {
        flex-direction: column;
    }

    .filter-actions {
        width: 100%;
    }

    .filter-actions .btn {
        flex: 1;
    }

    .cart-content {
        max-width: 100%;
    }
}

/* Print styles */
@media print {
    header, nav, footer, .cart-icon, .search-filters {
        display: none !important;
    }

    body {
        background-color: white;
    }

    .product-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}