:root { --white: #ffffff; --gray-50: #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb; --gray-300: #d1d5db; --gray-400: #9ca3af; --gray-500: #6b7280; --gray-600: #4b5563; --gray-700: #374151; --gray-800: #1f2937; --gray-900: #111827; --lime-400: #a3e635; --lime-500: #84cc16; --lime-600: #65a30d; --lime-700: #4d7c0f; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; background: var(--gray-50); color: var(--gray-800); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; outline: none; font-family: inherit; }
.header { background: var(--white); box-shadow: 0 2px 8px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 1000; }
.header-top { display: flex; justify-content: space-between; align-items: center; padding: 15px 30px; max-width: 1400px; margin: 0 auto; }
.logo { font-size: 1.8rem; font-weight: 700; color: var(--gray-800); display: flex; align-items: center; gap: 10px; }
.logo-icon { font-size: 2rem; }
.search-bar { flex: 1; max-width: 500px; margin: 0 30px; position: relative; }
.search-bar input { width: 100%; padding: 12px 20px; padding-right: 50px; border: 2px solid var(--gray-200); border-radius: 50px; font-size: 1rem; transition: border-color 0.2s; }
.search-bar input:focus { border-color: var(--lime-500); }
.search-bar button { position: absolute; right: 5px; top: 50%; transform: translateY(-50%); background: var(--lime-500); color: var(--white); padding: 8px 16px; border-radius: 50px; font-size: 0.9rem; transition: background 0.2s; }
.search-bar button:hover { background: var(--lime-600); }
.header-actions { display: flex; align-items: center; gap: 20px; }
.header-btn { display: flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 50px; font-size: 0.95rem; transition: all 0.2s; background: transparent; color: var(--gray-700); }
.header-btn:hover { background: var(--gray-100); }
.header-btn.primary { background: var(--lime-500); color: var(--white); }
.header-btn.primary:hover { background: var(--lime-600); }
.cart-count { background: var(--gray-800); color: var(--white); font-size: 0.75rem; padding: 2px 8px; border-radius: 50px; }
.main-container { display: flex; max-width: 1400px; margin: 0 auto; padding: 30px; gap: 30px; min-height: calc(100vh - 200px); }
.sidebar { width: 250px; flex-shrink: 0; }
.categories-panel { background: var(--white); border-radius: 16px; padding: 20px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.categories-title { font-size: 1.2rem; font-weight: 600; color: var(--gray-800); margin-bottom: 15px; padding-bottom: 15px; border-bottom: 2px solid var(--gray-100); }
.categories-list { list-style: none; }
.categories-list li { margin-bottom: 5px; }
.categories-list a { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 10px; color: var(--gray-700); transition: all 0.2s; }
.categories-list a:hover, .categories-list a.active { background: var(--lime-500); color: var(--white); }
.category-icon { font-size: 1.3rem; }
.filters-panel { background: var(--white); border-radius: 16px; padding: 20px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); margin-top: 20px; }
.filters-title { font-size: 1.1rem; font-weight: 600; color: var(--gray-800); margin-bottom: 15px; }
.filter-group { margin-bottom: 20px; }
.filter-group label { display: block; font-weight: 500; color: var(--gray-700); margin-bottom: 8px; font-size: 0.9rem; }
.filter-group input, .filter-group select { width: 100%; padding: 10px 14px; border: 2px solid var(--gray-200); border-radius: 10px; font-size: 0.95rem; transition: border-color 0.2s; }
.filter-group input:focus, .filter-group select:focus { border-color: var(--lime-500); }
.price-inputs { display: flex; gap: 10px; }
.price-inputs input { flex: 1; }
.filter-btn { width: 100%; padding: 12px; background: var(--lime-500); color: var(--white); border-radius: 10px; font-weight: 600; transition: background 0.2s; }
.filter-btn:hover { background: var(--lime-600); }
.reset-filters { width: 100%; padding: 10px; background: var(--gray-100); color: var(--gray-700); border-radius: 10px; font-weight: 500; margin-top: 10px; transition: background 0.2s; }
.reset-filters:hover { background: var(--gray-200); }
.catalog { flex: 1; }
.catalog-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 25px; }
.catalog-title { font-size: 1.8rem; font-weight: 600; color: var(--gray-800); }
.products-count { color: var(--gray-500); font-size: 1rem; }
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 25px; }
.product-card { background: var(--white); border-radius: 16px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.06); transition: transform 0.2s, box-shadow 0.2s; }
.product-card:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.12); }
.product-image { width: 100%; height: 220px; object-fit: cover; background: var(--gray-100); }
.product-info { padding: 20px; }
.product-category { font-size: 0.8rem; color: var(--lime-600); font-weight: 600; text-transform: uppercase; margin-bottom: 5px; }
.product-name { font-size: 1.1rem; font-weight: 600; color: var(--gray-800); margin-bottom: 10px; line-height: 1.4; }
.product-details { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 15px; }
.product-detail { font-size: 0.85rem; color: var(--gray-500); background: var(--gray-100); padding: 4px 10px; border-radius: 6px; }
.product-price { font-size: 1.5rem; font-weight: 700; color: var(--gray-800); margin-bottom: 15px; }
.product-actions { display: flex; gap: 10px; }
.add-to-cart { flex: 1; padding: 12px; background: var(--lime-500); color: var(--white); border-radius: 10px; font-weight: 600; transition: background 0.2s; }
.add-to-cart:hover { background: var(--lime-600); }
.cart-container { max-width: 900px; margin: 0 auto; padding: 30px; }
.cart-title { font-size: 2rem; font-weight: 600; color: var(--gray-800); margin-bottom: 30px; }
.cart-items { background: var(--white); border-radius: 16px; padding: 25px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); margin-bottom: 25px; }
.cart-item { display: flex; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--gray-100); }
.cart-item:last-child { border-bottom: none; }
.cart-item-image { width: 100px; height: 100px; object-fit: cover; border-radius: 10px; background: var(--gray-100); }
.cart-item-info { flex: 1; }
.cart-item-name { font-size: 1.1rem; font-weight: 600; color: var(--gray-800); margin-bottom: 8px; }
.cart-item-details { display: flex; gap: 15px; margin-bottom: 10px; }
.cart-item-detail { font-size: 0.9rem; color: var(--gray-500); }
.cart-item-price { font-size: 1.3rem; font-weight: 700; color: var(--gray-800); }
.cart-item-quantity { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.qty-btn { width: 35px; height: 35px; border-radius: 8px; background: var(--gray-100); color: var(--gray-700); font-size: 1.2rem; display: flex; align-items: center; justify-content: center; transition: background 0.2s; }
.qty-btn:hover { background: var(--gray-200); }
.remove-btn { padding: 8px 16px; background: #fee2e2; color: #dc2626; border-radius: 8px; font-weight: 500; transition: background 0.2s; }
.remove-btn:hover { background: #fecaca; }
.cart-summary { background: var(--white); border-radius: 16px; padding: 25px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.summary-row { display: flex; justify-content: space-between; padding: 15px 0; border-bottom: 1px solid var(--gray-100); }
.summary-row:last-child { border-bottom: none; font-size: 1.3rem; font-weight: 700; color: var(--gray-800); }
.checkout-btn { width: 100%; padding: 16px; background: var(--lime-500); color: var(--white); border-radius: 12px; font-size: 1.1rem; font-weight: 600; margin-top: 20px; transition: background 0.2s; }
.checkout-btn:hover { background: var(--lime-600); }
.empty-cart { text-align: center; padding: 60px 20px; color: var(--gray-500); }
.empty-cart-icon { font-size: 4rem; margin-bottom: 20px; }
.auth-container { max-width: 450px; margin: 60px auto; padding: 30px; }
.auth-card { background: var(--white); border-radius: 16px; padding: 40px; box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.auth-title { font-size: 1.8rem; font-weight: 600; color: var(--gray-800); text-align: center; margin-bottom: 30px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 500; color: var(--gray-700); margin-bottom: 8px; }
.form-group input { width: 100%; padding: 14px 18px; border: 2px solid var(--gray-200); border-radius: 10px; font-size: 1rem; transition: border-color 0.2s; }
.form-group input:focus { border-color: var(--lime-500); }
.auth-btn { width: 100%; padding: 16px; background: var(--lime-500); color: var(--white); border-radius: 10px; font-size: 1.1rem; font-weight: 600; margin-top: 10px; transition: background 0.2s; }
.auth-btn:hover { background: var(--lime-600); }
.auth-link { text-align: center; margin-top: 20px; color: var(--gray-600); }
.auth-link a { color: var(--lime-600); font-weight: 600; }
.admin-container { max-width: 1000px; margin: 0 auto; padding: 30px; }
.admin-title { font-size: 2rem; font-weight: 600; color: var(--gray-800); margin-bottom: 30px; }
.admin-section { background: var(--white); border-radius: 16px; padding: 30px; box-shadow: 0 2px 12px rgba(0,0,0,0.06); margin-bottom: 25px; }
.admin-section-title { font-size: 1.4rem; font-weight: 600; color: var(--gray-800); margin-bottom: 20px; padding-bottom: 15px; border-bottom: 2px solid var(--gray-100); }
.settings-grid { display: grid; gap: 20px; }
.save-btn { padding: 14px 30px; background: var(--lime-500); color: var(--white); border-radius: 10px; font-weight: 600; font-size: 1rem; transition: background 0.2s; }
.save-btn:hover { background: var(--lime-600); }
.footer { background: var(--gray-800); color: var(--gray-300); padding: 40px 30px; margin-top: 60px; }
.size-stock-indicator { font-size: 0.7rem; color: #166534; text-align: center; margin-top: 4px; font-weight: 500; }
.selected-size-info { padding: 15px; background: #dcfce7; border: 1px solid #86efac; border-radius: 10px; margin: 20px 0; }
.footer-content { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; }
.footer-section h3 { color: var(--white); font-size: 1.2rem; margin-bottom: 15px; }
.footer-section p, .footer-section a { color: var(--gray-400); line-height: 2; }
.footer-section a:hover { color: var(--lime-400); }
.footer-bottom { max-width: 1400px; margin: 30px auto 0; padding-top: 20px; border-top: 1px solid var(--gray-700); text-align: center; color: var(--gray-500); }

/* Бургер-меню для фильтров */
.filter-toggle-btn { display: none; align-items: center; gap: 8px; padding: 10px 16px; background: var(--lime-500); color: var(--white); border: none; border-radius: 10px; font-weight: 600; font-size: 0.95rem; cursor: pointer; transition: background 0.2s; }
.filter-toggle-btn:hover { background: var(--lime-600); }
.filter-toggle-icon { font-size: 1.2rem; }
.sidebar.open .categories-panel, .sidebar.open .filters-panel { display: block; }

/* Планшеты */
@media (max-width: 1024px) {
  .main-container { flex-direction: column; }
  .sidebar { width: 100%; }
  .header-top { padding: 15px 20px; }
  .products-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
}

/* Мобильные устройства (ландшафт) */
@media (max-width: 768px) {
  .header-top { flex-direction: column; gap: 12px; padding: 12px 15px; }
  .logo { font-size: 1.4rem; }
  .logo-icon { font-size: 1.6rem; }
  .search-bar { max-width: 100%; margin: 0; width: 100%; }
  .search-bar input { padding: 10px 16px; padding-right: 45px; font-size: 0.95rem; }
  .search-bar button { padding: 6px 12px; font-size: 0.85rem; }
  .header-actions { gap: 10px; flex-wrap: wrap; justify-content: center; }
  .header-btn { padding: 8px 14px; font-size: 0.85rem; }
  .header-btn.primary { display: none; }
  .cart-count { font-size: 0.7rem; padding: 2px 6px; }
  
  .main-container { padding: 15px; gap: 20px; }
  
  /* Бургер-меню для фильтров */
  .filter-toggle-btn { display: flex; margin-bottom: 15px; width: 100%; justify-content: center; }
  .sidebar .categories-panel, .sidebar .filters-panel { display: none; }
  .sidebar.open .categories-panel, .sidebar.open .filters-panel { display: block; }
  .sidebar .categories-panel { margin-bottom: 15px; }
  
  .categories-panel, .filters-panel { padding: 15px; border-radius: 12px; }
  .categories-title { font-size: 1.1rem; }
  .category-icon { font-size: 1.1rem; }
  .categories-list a { padding: 10px 12px; font-size: 0.9rem; }
  
  .filter-group label { font-size: 0.85rem; }
  .filter-group input, .filter-group select { padding: 8px 12px; font-size: 0.9rem; }
  .filter-btn, .reset-filters { padding: 10px; font-size: 0.9rem; }
  
  .catalog-header { margin-bottom: 15px; flex-direction: column; align-items: flex-start; gap: 8px; }
  .catalog-title { font-size: 1.4rem; }
  .products-count { font-size: 0.9rem; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  
  .product-card { border-radius: 12px; }
  .product-image { height: 140px; }
  .product-info { padding: 10px; }
  .product-category { font-size: 0.65rem; }
  .product-name { font-size: 0.85rem; }
  .product-details { gap: 4px; flex-wrap: wrap; }
  .product-detail { font-size: 0.7rem; padding: 2px 6px; }
  .product-price { font-size: 1.1rem; margin-bottom: 8px; }
  .add-to-cart { padding: 8px; font-size: 0.8rem; border-radius: 6px; }
  
  .size-btn { padding: 5px 8px; font-size: 0.75rem; border-radius: 5px; }
  .size-stock-indicator { font-size: 0.6rem; }
  
  .cart-container { padding: 15px; }
  .cart-title { font-size: 1.5rem; }
  .cart-items { padding: 15px; border-radius: 12px; }
  .cart-item { gap: 15px; padding: 15px 0; }
  .cart-item-image { width: 80px; height: 80px; border-radius: 8px; }
  .cart-item-name { font-size: 1rem; }
  .cart-item-details { gap: 10px; }
  .cart-item-detail { font-size: 0.8rem; }
  .cart-item-price { font-size: 1.1rem; }
  .qty-btn { width: 30px; height: 30px; font-size: 1rem; border-radius: 6px; }
  .remove-btn { padding: 6px 12px; font-size: 0.85rem; border-radius: 6px; }
  .cart-summary { padding: 15px; border-radius: 12px; }
  .summary-row { padding: 12px 0; font-size: 1.1rem; }
  .checkout-btn { padding: 14px; font-size: 1rem; border-radius: 10px; }
  
  .auth-container { margin: 30px auto; padding: 20px; }
  .auth-card { padding: 25px; border-radius: 12px; }
  .auth-title { font-size: 1.5rem; }
  .form-group input { padding: 12px 14px; font-size: 0.95rem; }
  .auth-btn { padding: 14px; font-size: 1rem; border-radius: 8px; }
  
  .admin-container { padding: 15px; }
  .admin-title { font-size: 1.5rem; }
  .admin-section { padding: 20px; border-radius: 12px; }
  .admin-section-title { font-size: 1.2rem; }
  .save-btn { padding: 12px 20px; font-size: 0.95rem; border-radius: 8px; }
  
  .footer { padding: 30px 15px; margin-top: 40px; }
  .footer-content { gap: 25px; }
  .footer-section h3 { font-size: 1.1rem; }
  .footer-section p { font-size: 0.9rem; }
  
  .notification { right: 15px; bottom: 15px; padding: 12px 18px; font-size: 0.9rem; border-radius: 10px; }
}

/* Мобильные устройства (портрет) */
@media (max-width: 480px) {
  .header-top { padding: 10px 12px; }
  .logo { font-size: 1.2rem; }
  .logo-icon { font-size: 1.4rem; }
  .search-bar input { padding: 8px 14px; padding-right: 40px; font-size: 0.9rem; }
  .search-bar button { padding: 5px 10px; font-size: 0.8rem; right: 3px; }
  .header-actions { gap: 8px; }
  .header-btn { padding: 6px 10px; font-size: 0.8rem; }
  
  .main-container { padding: 10px; gap: 15px; }
  
  .filter-toggle-btn { padding: 9px 14px; font-size: 0.85rem; }
  
  .categories-panel, .filters-panel { padding: 12px; }
  .categories-title { font-size: 1rem; padding-bottom: 12px; }
  .categories-list a { padding: 8px 10px; font-size: 0.85rem; }
  
  .filters-title { font-size: 1rem; }
  .filter-group { margin-bottom: 15px; }
  .filter-btn, .reset-filters { padding: 9px; font-size: 0.85rem; }
  
  .catalog-title { font-size: 1.2rem; }
  .products-count { font-size: 0.85rem; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  
  .product-image { height: 160px; }
  .product-info { padding: 10px; }
  .product-category { font-size: 0.6rem; }
  .product-name { font-size: 0.85rem; line-height: 1.3; }
  .product-detail { font-size: 0.65rem; padding: 2px 5px; border-radius: 4px; }
  .product-price { font-size: 1.15rem; }
  .add-to-cart { padding: 9px; font-size: 0.75rem; }
  
  .size-selector { gap: 4px; }
  .size-btn { padding: 5px 8px; font-size: 0.7rem; }
  
  .cart-title { font-size: 1.3rem; margin-bottom: 20px; }
  .cart-item { flex-direction: column; align-items: center; text-align: center; }
  .cart-item-image { width: 100px; height: 100px; }
  .cart-item-quantity { justify-content: center; }
  .remove-btn { width: 100%; text-align: center; }
  
  .auth-title { font-size: 1.4rem; }
  .form-group { margin-bottom: 15px; }
  .form-group label { font-size: 0.9rem; }
  
  .footer-content { grid-template-columns: 1fr; gap: 20px; text-align: center; }
  
  .notification { right: 10px; bottom: 10px; left: 10px; text-align: center; }
}
.notification { position: fixed; bottom: 30px; right: 30px; background: var(--gray-800); color: var(--white); padding: 16px 24px; border-radius: 12px; box-shadow: 0 4px 20px rgba(0,0,0,0.15); z-index: 2000; animation: slideIn 0.3s ease; }
.notification.success { background: var(--lime-600); }
.notification.error { background: #dc2626; }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
.loader { display: flex; justify-content: center; align-items: center; padding: 60px; }
.loader-spinner { width: 50px; height: 50px; border: 4px solid var(--gray-200); border-top-color: var(--lime-500); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }