/* ==========================================================================
   СОВРЕМЕННЫЙ ДИЗАЙН ИНТЕРНЕТ-МАГАЗИНА LIGHTSTORE
   ========================================================================== */

/* ==========================================================================
   АДАПТИВНАЯ СИСТЕМА РАЗМЕРОВ И ПЕРЕМЕННЫЕ
   ========================================================================== */
:root {
    /* Цветовая схема - современная палитра */
    --primary: #005bff;
    --primary-hover: #0051e6;
    --secondary: #6c757d;
    --success: #28a745;
    --success-hover: #218838;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
    
    /* Нейтральные цвета */
    --white: #ffffff;
    --light: #f8f9fb;
    --light-2: #f1f3f6;
    --gray-100: #e9ecef;
    --gray-200: #dee2e6;
    --gray-300: #ced4da;
    --gray-400: #adb5bd;
    --gray-500: #6c757d;
    --gray-600: #495057;
    --gray-700: #343a40;
    --gray-800: #212529;
    --dark: #1a1a1a;
    
    /* Тени */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
    --shadow-xl: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
    
    /* Радиусы */
    --border-radius-sm: 4px;
    --border-radius: 6px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    /* Переходы */
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-modal: 1050;
    --z-header: 100;
}

/* Адаптивная типографика */
@media (min-width: 992px) {
    html {
        font-size: 0.93vw;
    }
}

@media (max-width: 991px) {
    html {
        font-size: 16px;
    }
}

/* ==========================================================================
   БАЗОВЫЕ СТИЛИ
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.5;
    color: var(--gray-800);
    background-color: var(--light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

@media (min-width: 992px) {
    body {
        font-size: 1rem;
        line-height: 1.6;
    }
}

@media (max-width: 991px) {
    body {
        font-size: 14px;
        line-height: 1.5;
    }
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--light);
}

/* ==========================================================================
   СОВРЕМЕННЫЙ ХЕДЕР
   ========================================================================== */
.app-header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-header);
}

.header-top {
    background: var(--light-2);
    border-bottom: 1px solid var(--gray-200);
}

@media (min-width: 992px) {
    .header-top {
        padding: 0.5rem 0;
    }
}

@media (max-width: 991px) {
    .header-top {
        padding: 8px 0;
    }
}

.header-top-content {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@media (min-width: 992px) {
    .header-top-content {
        padding: 0 2rem;
    }
}

@media (max-width: 991px) {
    .header-top-content {
        padding: 0 16px;
    }
}

.header-location,
.header-contacts {
    display: flex;
    align-items: center;
    gap: 1rem;
}

@media (min-width: 992px) {
    .header-location span,
    .header-contacts span {
        font-size: 0.85rem;
        color: var(--gray-600);
    }
}

@media (max-width: 991px) {
    .header-location span,
    .header-contacts span {
        font-size: 12px;
        color: var(--gray-600);
    }
}

.header-main {
    background: var(--white);
}

@media (min-width: 992px) {
    .header-main {
        padding: 1rem 0;
    }
}

@media (max-width: 991px) {
    .header-main {
        padding: 12px 0;
    }
}

.header-content {
    max-width: 1440px;
    margin: 0 auto;
    display: grid;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 992px) {
    .header-content {
        grid-template-columns: auto 1fr auto auto;
        padding: 0 2rem;
    }
}

@media (max-width: 991px) {
    .header-content {
        grid-template-columns: 1fr auto;
        padding: 0 16px;
        gap: 16px;
    }
}

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

.logo img {
    height: 2.5rem;
    width: auto;
}

@media (max-width: 991px) {
    .logo img {
        height: 32px;
    }
}

/* Современная поисковая строка */
.search-bar {
    position: relative;
    display: flex;
    background: var(--light-2);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.search-bar:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 91, 255, 0.1);
}

@media (min-width: 992px) {
    .search-bar {
        min-width: 30rem;
    }
}

@media (max-width: 991px) {
    .search-bar {
        min-width: 200px;
    }
}

.search-bar input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    color: var(--gray-800);
}

@media (min-width: 992px) {
    .search-bar input {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }
}

@media (max-width: 991px) {
    .search-bar input {
        padding: 10px 12px;
        font-size: 14px;
    }
}

.search-bar input::placeholder {
    color: var(--gray-500);
}

.search-btn {
    border: none;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

@media (min-width: 992px) {
    .search-btn {
        padding: 0.75rem 1.25rem;
    }
}

@media (max-width: 991px) {
    .search-btn {
        padding: 10px 16px;
    }
}

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

.search-btn svg {
    width: 1.2rem;
    height: 1.2rem;
}

@media (max-width: 991px) {
    .search-btn svg {
        width: 16px;
        height: 16px;
    }
}

/* Кнопка корзины */
.cart-btn {
    position: relative;
    background: var(--light-2);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    color: var(--gray-800);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

@media (min-width: 992px) {
    .cart-btn {
        padding: 0.75rem 1.25rem;
        gap: 0.75rem;
    }
}

@media (max-width: 991px) {
    .cart-btn {
        padding: 10px 12px;
        gap: 8px;
    }
}

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

.cart-icon {
    width: 1.25rem;
    height: 1.25rem;
}

@media (max-width: 991px) {
    .cart-icon {
        width: 18px;
        height: 18px;
    }
}

.cart-count {
    background: var(--danger);
    color: var(--white);
    border-radius: 50%;
    min-width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: -0.5rem;
    right: -0.5rem;
}

@media (min-width: 992px) {
    .cart-count {
        font-size: 0.75rem;
        font-weight: 600;
    }
}

@media (max-width: 991px) {
    .cart-count {
        font-size: 11px;
        font-weight: 600;
        min-width: 18px;
        height: 18px;
        top: -6px;
        right: -6px;
    }
}

/* ==========================================================================
   НАВИГАЦИЯ
   ========================================================================== */
.main-nav {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
}

@media (min-width: 992px) {
    .main-nav {
        padding: 0.75rem 0;
    }
}

@media (max-width: 991px) {
    .main-nav {
        display: none;
    }
}

.nav-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-list a {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-list a:hover,
.nav-list a.router-link-active {
    color: var(--primary);
}

.nav-list a.router-link-active::after {
    content: '';
    position: absolute;
    bottom: -0.75rem;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

/* ==========================================================================
   ОСНОВНОЙ КОНТЕНТ
   ========================================================================== */
.main-content {
    flex: 1;
    background: var(--light);
}

.container {
    max-width: 1440px;
    margin: 0 auto;
}

@media (min-width: 992px) {
    .container {
        padding: 2rem;
    }
}

@media (max-width: 991px) {
    .container {
        padding: 16px;
    }
}

/* ==========================================================================
   КАТАЛОГ И ФИЛЬТРЫ
   ========================================================================== */
.catalog-layout {
    display: grid;
    gap: 2rem;
}

@media (min-width: 992px) {
    .catalog-layout {
        grid-template-columns: 18rem 1fr;
    }
}

@media (max-width: 991px) {
    .catalog-layout {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.filters-sidebar {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    height: fit-content;
    border: 1px solid var(--gray-200);
}

@media (min-width: 992px) {
    .filters-sidebar {
        padding: 1.5rem;
    }
}

@media (max-width: 991px) {
    .filters-sidebar {
        padding: 16px;
        order: 2;
    }
}

.catalog-content {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    min-height: 600px;
}

/* ==========================================================================
   СОВРЕМЕННЫЕ КАРТОЧКИ ТОВАРОВ
   ========================================================================== */
.products-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 1200px) {
    .products-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 992px) and (max-width: 1199px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 767px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
}

@media (min-width: 992px) {
    .products-grid {
        padding: 1.5rem;
    }
}

@media (max-width: 991px) {
    .products-grid {
        padding: 16px;
    }
}

.product-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-slow);
    position: relative;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

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

.product-image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
    background: var(--light-2);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: var(--danger);
    color: var(--white);
    border-radius: var(--border-radius);
    font-weight: 600;
    z-index: 10;
}

@media (min-width: 992px) {
    .product-badge {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
}

@media (max-width: 991px) {
    .product-badge {
        padding: 4px 6px;
        font-size: 10px;
    }
}

.product-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
}

@media (min-width: 992px) {
    .product-info {
        padding: 1rem;
    }
}

@media (max-width: 991px) {
    .product-info {
        padding: 12px;
        gap: 8px;
    }
}

.product-brand {
    color: var(--gray-600);
    font-weight: 500;
}

@media (min-width: 992px) {
    .product-brand {
        font-size: 0.8rem;
    }
}

@media (max-width: 991px) {
    .product-brand {
        font-size: 11px;
    }
}

.product-name {
    font-weight: 600;
    color: var(--gray-800);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

@media (min-width: 992px) {
    .product-name {
        font-size: 1rem;
    }
}

@media (max-width: 991px) {
    .product-name {
        font-size: 13px;
    }
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stars {
    display: flex;
    gap: 0.125rem;
}

.star {
    width: 0.875rem;
    height: 0.875rem;
    fill: var(--gray-300);
}

@media (max-width: 991px) {
    .star {
        width: 12px;
        height: 12px;
    }
}

.star.filled {
    fill: #ffd700;
}

.rating-text {
    color: var(--gray-600);
}

@media (min-width: 992px) {
    .rating-text {
        font-size: 0.8rem;
    }
}

@media (max-width: 991px) {
    .rating-text {
        font-size: 11px;
    }
}

.product-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
}

.current-price {
    font-weight: 700;
    color: var(--gray-800);
}

@media (min-width: 992px) {
    .current-price {
        font-size: 1.125rem;
    }
}

@media (max-width: 991px) {
    .current-price {
        font-size: 14px;
    }
}

.old-price {
    color: var(--gray-500);
    text-decoration: line-through;
}

@media (min-width: 992px) {
    .old-price {
        font-size: 0.9rem;
    }
}

@media (max-width: 991px) {
    .old-price {
        font-size: 12px;
    }
}

.discount {
    background: var(--danger);
    color: var(--white);
    border-radius: var(--border-radius);
    font-weight: 600;
}

@media (min-width: 992px) {
    .discount {
        padding: 0.125rem 0.375rem;
        font-size: 0.75rem;
    }
}

@media (max-width: 991px) {
    .discount {
        padding: 2px 4px;
        font-size: 10px;
    }
}

.product-stock {
    font-weight: 500;
}

@media (min-width: 992px) {
    .product-stock {
        font-size: 0.8rem;
    }
}

@media (max-width: 991px) {
    .product-stock {
        font-size: 11px;
    }
}

.in-stock {
    color: var(--success);
}

.low-stock {
    color: var(--warning);
}

.out-of-stock {
    color: var(--danger);
}

/* ==========================================================================
   СОВРЕМЕННЫЕ КНОПКИ
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
    font-family: inherit;
}

@media (min-width: 992px) {
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 991px) {
    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-300);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--primary);
    color: var(--white);
}

.btn-sm {
    font-size: 0.875rem;
}

@media (min-width: 992px) {
    .btn-sm {
        padding: 0.5rem 1rem;
    }
}

@media (max-width: 991px) {
    .btn-sm {
        padding: 6px 12px;
        font-size: 12px;
    }
}

.btn-lg {
    font-size: 1.125rem;
}

@media (min-width: 992px) {
    .btn-lg {
        padding: 1rem 2rem;
    }
}

@media (max-width: 991px) {
    .btn-lg {
        padding: 12px 20px;
        font-size: 16px;
    }
}

/* ==========================================================================
   ФИЛЬТРЫ И КАТАЛОГ
   ========================================================================== */
.filter-group {
    margin-bottom: 1.5rem;
}

.filter-title {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
}

.filter-option input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    accent-color: var(--primary);
}

.filter-option label {
    flex: 1;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.catalog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

@media (max-width: 991px) {
    .catalog-header {
        margin-bottom: 16px;
        gap: 12px;
    }
}

.results-count {
    color: var(--gray-600);
}

@media (min-width: 992px) {
    .results-count {
        font-size: 0.9rem;
    }
}

@media (max-width: 991px) {
    .results-count {
        font-size: 13px;
    }
}

.sort-select {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    color: var(--gray-800);
    outline: none;
    transition: var(--transition);
}

@media (min-width: 992px) {
    .sort-select {
        padding: 0.5rem 2.5rem 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 991px) {
    .sort-select {
        padding: 8px 32px 8px 12px;
        font-size: 13px;
    }
}

.sort-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 91, 255, 0.1);
}

/* ==========================================================================
   ПАГИНАЦИЯ
   ========================================================================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

@media (max-width: 991px) {
    .pagination {
        margin-top: 20px;
        gap: 6px;
    }
}

.pagination button {
    background: var(--white);
    border: 2px solid var(--gray-200);
    color: var(--gray-700);
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    font-weight: 500;
}

@media (min-width: 992px) {
    .pagination button {
        padding: 0.5rem 0.75rem;
        min-width: 2.5rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 991px) {
    .pagination button {
        padding: 6px 10px;
        min-width: 32px;
        font-size: 13px;
    }
}

.pagination button:hover:not(:disabled) {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.pagination button.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==========================================================================
   СОВРЕМЕННЫЙ ФУТЕР
   ========================================================================== */
.app-footer {
    background: var(--gray-800);
    color: var(--gray-200);
    margin-top: auto;
}

@media (min-width: 992px) {
    .app-footer {
        padding: 2rem 0;
    }
}

@media (max-width: 991px) {
    .app-footer {
        padding: 24px 0;
    }
}

.footer-content {
    max-width: 1440px;
    margin: 0 auto;
    text-align: center;
}

@media (min-width: 992px) {
    .footer-content {
        padding: 0 2rem;
    }
}

@media (max-width: 991px) {
    .footer-content {
        padding: 0 16px;
    }
}

.footer-content p {
    margin: 0;
}

@media (min-width: 992px) {
    .footer-content p {
        font-size: 0.9rem;
    }
}

@media (max-width: 991px) {
    .footer-content p {
        font-size: 13px;
    }
}

/* ==========================================================================
   УТИЛИТЫ
   ========================================================================== */
.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary);
}

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-gray {
    color: var(--gray-600);
}

.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    color: var(--gray-600);
}

.loading-spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid var(--gray-300);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 0.75rem;
}

@media (max-width: 991px) {
    .loading-spinner {
        width: 24px;
        height: 24px;
        border-width: 2px;
        margin-right: 8px;
    }
}

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

/* ==========================================================================
   МОБИЛЬНАЯ НАВИГАЦИЯ
   ========================================================================== */
@media (max-width: 991px) {
    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        background: var(--light-2);
        border: 2px solid var(--gray-200);
        border-radius: var(--border-radius);
        padding: 8px;
        cursor: pointer;
        transition: var(--transition);
    }

    .mobile-menu-toggle:hover {
        background: var(--primary);
        color: var(--white);
        border-color: var(--primary);
    }

    .mobile-menu-toggle svg {
        width: 20px;
        height: 20px;
    }
}