@media (min-width: 2560px) {
    .container { max-width: 1920px; }
    h1 { font-size: 3.5rem; }
    h2 { font-size: 2.6rem; }
    h3 { font-size: 1.9rem; }
    .header-inner { height: 88px; }
    .logo { font-size: 2.2rem; }
    .hero-slider { height: 520px; }
    .catalog-hero { padding: 56px 64px; }
    .catalog-hero h1 { font-size: 3.2rem; }
    .products-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 28px; }
    .admin-stats { grid-template-columns: repeat(4, 1fr); }
    .admin-content { padding: 40px 64px 64px; }
    .admin-topbar { padding: 24px 64px; }
    .admin-shell { grid-template-columns: 300px 1fr; }
    .admin-sidebar { width: 300px; }
    .btn-lg { padding: 20px 36px; font-size: 1.1rem; }
    .toast { min-width: 320px; }
}

@media (min-width: 1920px) {
    .container { max-width: 1480px; }
    h1 { font-size: 2.9rem; }
    h2 { font-size: 2.2rem; }
    h3 { font-size: 1.6rem; }
    .products-grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
    .hero-slider { height: 440px; }
}

@media (max-width: 1199px) {
    .container { max-width: 100%; }
    .grid-4 { grid-template-columns: repeat(3, 1fr); }

    .footer-content {
        grid-template-columns: 1.2fr 1fr 1fr;
        gap: 28px;
    }
    .footer-content .footer-section:last-child {
        grid-column: 1 / -1;
    }

    .catalog-sidebar { width: 240px; }
}

@media (max-width: 1023px) {
    .header-search {
        max-width: 260px;
        margin: 0 12px;
    }
    .header-actions { gap: 4px; }

    .grid-4,
    .grid-3 { grid-template-columns: repeat(2, 1fr); }

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

    .product-image { aspect-ratio: 1; }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
    .footer-content .footer-section:last-child { grid-column: auto; }
    .auth-container { grid-template-columns: 1fr; }
    .auth-info { display: none; }
    .auth-form { max-width: 420px; width: 100%; margin: 0 auto; }
    .cart-layout { grid-template-columns: 1fr; }
    .cart-summary { position: static; }
    .profile-layout { grid-template-columns: 1fr; }
    .profile-sidebar { position: static; }
    .info-grid { grid-template-columns: 1fr; }
    .product-detail {
        grid-template-columns: 1fr;
        padding: 24px;
    }
    .product-detail-name { font-size: 1.8rem; }
    .product-detail-price { font-size: 1.8rem; }
}
@media (max-width: 900px) {
    .product-detail {
        grid-template-columns: 1fr;
        padding: 20px;
        gap: 28px;
    }
    .product-detail-name { font-size: 1.65rem; }
    .product-detail-price { font-size: 1.65rem; }
}

@media (max-width: 767px) {
    .container { padding: 0 16px; }

    h1 { font-size: 1.7rem; }
    h2 { font-size: 1.45rem; }
    h3 { font-size: 1.2rem; }

    .header-inner {
        height: auto;
        flex-wrap: wrap;
        gap: 8px;
        padding: 10px 0;
        position: relative;
    }
    .logo { font-size: 1.45rem; }
    .header-search {
        max-width: 100%;
        margin: 0;
        order: 3;
        width: 100%;
        flex: none;
    }
    .header-actions {
        order: 2;
        margin-left: auto;
        gap: 2px;
    }
    .action-item span:not(.material-icons-round):not(.badge) {
        display: none;
    }
    .action-item { padding: 8px 10px; }

    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .btn { padding: 11px 16px; }
    .product-footer { flex-direction: column; }
    .product-footer .btn { width: 100%; }
    .product-body { padding: 14px; }
    .modal-content { max-width: 94%; padding: 20px; }
    .modal-footer { flex-direction: column; }
    .modal-footer .btn { width: 100%; }
    .table { font-size: 0.85rem; }
    .table th,
    .table td { padding: 10px 8px; }
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 14px;
        text-align: center;
    }
    .pagination-item {
        width: 36px;
        height: 36px;
        font-size: 0.875rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .section-header .input-field { width: 100%; }
    .catalog-layout { flex-direction: column; }
    .catalog-sidebar { width: 100%; }
    .catalog-hero { padding: 28px 24px; }
    .catalog-hero h1 { font-size: 1.75rem; }
    .catalog-hero p { font-size: 0.95rem; }
    .hero-slider { height: 300px; }
    .hero-slide-content {
        max-width: 100%;
        padding: 0 20px;
        text-align: center;
        align-items: center;
    }
    .hero-slide-content h2 { font-size: 1.6rem; }
    .hero-slide-content p { font-size: 0.9rem; margin-bottom: 20px; }
    .hero-slide-overlay {
        background: linear-gradient(0deg, rgba(18,24,32,0.95) 0%, rgba(18,24,32,0.45) 100%);
    }
    .hero-arrows { display: none; }
    .hero-dots { bottom: 16px; }
    .checkout-panel { padding: 20px; }
    .delivery-methods { gap: 8px; }
    .delivery-card-inner { padding: 12px 6px; gap: 8px; }
    .delivery-name { font-size: 0.8rem; }
    .delivery-icon-wrap { width: 36px; height: 36px; }
}

@media (max-width: 639px) {
    .container { padding: 0 14px; }
    .header-inner { padding: 10px 0; gap: 6px; }
    .header-search { order: 3; }
    .grid-4,
    .grid-3,
    .grid-2,
    .products-grid { grid-template-columns: 1fr; }
    .logo { font-size: 1.3rem; }
    .product-title { font-size: 0.95rem; }
    .price-current { font-size: 1.05rem; }

    .profile-avatar {
        width: 72px;
        height: 72px;
        font-size: 1.75rem;
    }

    .auth-form { padding: 24px; }

    .cart-item {
        grid-template-columns: 80px 1fr;
        gap: 12px;
        padding: 16px;
    }
    .cart-item-image { width: 80px; height: 80px; }
    .cart-item-controls {
        grid-column: 1 / -1;
        justify-content: space-between;
    }

    .profile-content { padding: 20px; }
    .profile-sidebar { padding: 20px; }
    .profile-actions .btn { width: 100%; }
    .profile-section-header { flex-direction: column; align-items: flex-start; }
    .profile-section-title { font-size: 1.3rem; }

    .footer-content { grid-template-columns: 1fr; gap: 20px; }
    .main-footer { padding: 36px 0 20px; }

    .toast-container {
        left: 14px;
        right: 14px;
        bottom: 16px;
    }
    .toast { min-width: unset; width: 100%; }
    .hero-slider { height: 260px; }
    .hero-slide-content h2 { font-size: 1.3rem; }
    .hero-slide-content p { display: none; }
    .hero-slide-content .btn { padding: 10px 20px; font-size: 0.9rem; }
    .hero-dots { bottom: 12px; }
    .section-title { font-size: 1.35rem; }
    .catalog-hero { padding: 22px 18px; }
    .catalog-hero h1 { font-size: 1.4rem; }
    .catalog-hero p { font-size: 0.875rem; }
    .delivery-methods { flex-wrap: wrap; gap: 8px; }
    .delivery-card { flex: 0 0 calc(50% - 4px); min-width: 90px; }
    .delivery-card-inner { padding: 12px 6px; }
    .product-detail { padding: 16px; gap: 20px; }
    .product-detail-name { font-size: 1.4rem; }
    .product-detail-price { font-size: 1.4rem; }
    .product-detail-actions { flex-direction: column; }
    .product-detail-actions .btn { width: 100%; }
    .breadcrumb { font-size: 0.82rem; gap: 4px; margin: 18px 0 6px; }
    .modal-content { max-width: 100%; border-radius: var(--radius-lg) var(--radius-lg) 0 0; margin: auto 0 0; }
    .modal-overlay { align-items: flex-end; }
}

@media (max-width: 480px) {
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }

    .header-inner { padding: 8px 0; }

    .btn-lg { padding: 13px 20px; font-size: 0.95rem; }

    .products-grid { gap: 10px; }

    .product-body { padding: 12px; }
    .product-title { font-size: 0.9rem; }
    .price-current { font-size: 1rem; }

    .admin-login-card { padding: 28px 20px; }

    .hero-slider { height: 220px; }
    .hero-slide-content { padding: 0 16px; }
    .hero-slide-content h2 { font-size: 1.15rem; margin-bottom: 12px; }

    .section-title { font-size: 1.2rem; }

    .category-card { padding: 20px 16px; }

    .toast-container { left: 10px; right: 10px; bottom: 12px; }
    .toast { padding: 12px 14px; font-size: 0.875rem; }

    #filter-price-min,
    #filter-price-max { padding: 8px; font-size: 0.875rem; }
}

@media (max-width: 375px) {
    .container { padding: 0 12px; }
    .logo { font-size: 1.2rem; }
    h1 { font-size: 1.35rem; }
    .catalog-hero h1 { font-size: 1.2rem; }
    .hero-slider { height: 200px; }
    .hero-slide-content h2 { font-size: 1.05rem; }
    .product-detail-name { font-size: 1.2rem; }
    .product-detail-price { font-size: 1.2rem; }
    .btn { padding: 10px 14px; }
    .action-item { padding: 6px 8px; }
}

@media (hover: none) and (pointer: coarse) {
    .btn:hover:not(:disabled) { transform: none; }
    .btn:active:not(:disabled) { transform: scale(0.97); }
    .action-item:active { opacity: 0.85; }
    .product-card:hover { transform: none; box-shadow: var(--shadow-card); }
    .product-card:active { transform: scale(0.98); }

    .action-item { min-height: 44px; }
    .btn { min-height: 44px; }
    .sidebar-link { min-height: 44px; }
    .dropdown-menu a { min-height: 48px; }
    .cart-item-quantity button { width: 40px; height: 40px; }

    .sidebar-link:hover { padding-left: 20px; }
    .dropdown-menu a:hover { padding-left: 18px; }
    .custom-select-option:hover { padding-left: 16px; }
    .filter-label:hover { color: inherit; }
}

@media print {
    .main-header,
    .main-footer,
    .btn,
    .action-item,
    .toast-container,
    .hero-slider,
    .catalog-sidebar,
    #pagination-container,
    .breadcrumb {
        display: none !important;
    }
    body {
        background: white !important;
        color: black !important;
    }
    .container { max-width: 100%; padding: 0; }
    .product-card { box-shadow: none; border: 1px solid #ccc; }
    .product-detail { grid-template-columns: 1fr 1fr; box-shadow: none; border: 1px solid #ccc; }
    a[href]:after { content: " (" attr(href) ")"; font-size: 0.75em; color: gray; }
}

@media (max-width: 900px) and (orientation: landscape) and (max-height: 500px) {
    .hero-slider { height: 200px; }
    .hero-slide-content h2 { font-size: 1.2rem; margin-bottom: 8px; }
    .catalog-hero { padding: 20px 24px; }
    .catalog-hero h1 { font-size: 1.4rem; }
    .header-inner {
        flex-wrap: nowrap;
        height: 56px;
    }
    .header-search {
        order: 0;
        width: auto;
        flex: 1;
        max-width: 320px;
        margin: 0 12px;
    }
    .header-actions { order: 0; }
    .auth-page { padding: 16px 20px; }
    .auth-form { padding: 20px; }
}

@media (min-width: 1024px) and (max-width: 1199px) {
    .catalog-sidebar { width: 230px; }
    .products-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
    .admin-stats { grid-template-columns: repeat(2, 1fr); }
    .admin-settings-grid { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
    .admin-table-wrap,
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: var(--radius-md);
    }
    .admin-table { min-width: 600px; }
    .admin-table th,
    .admin-table td { padding: 10px 12px; font-size: 0.85rem; }
    .admin-table .col-hide-mobile { display: none; }
    .admin-topbar { padding: 14px 16px; }
    .admin-topbar h1 { font-size: 1.15rem; }
    .admin-topbar-actions { gap: 6px; }
    .admin-content { padding: 16px 16px 40px; }
    .admin-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .admin-stat-card { padding: 16px; gap: 12px; }
    .admin-stat-icon { width: 42px; height: 42px; }
    .admin-stat-meta strong { font-size: 1.5rem; }
    .admin-panel-header { padding: 14px 16px; }
    .admin-panel-header h2 { font-size: 1rem; }
    .admin-banner-grid { padding: 16px; grid-template-columns: 1fr; }
    .admin-filter-tabs { padding: 10px 16px; }
    .admin-settings-grid { grid-template-columns: 1fr; gap: 14px; }
    .admin-form-grid { grid-template-columns: 1fr; }
    .admin-modal-overlay { padding: 0; align-items: flex-end; }
    .admin-modal {
        max-width: 100%;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        max-height: 92vh;
    }
}

@media (max-width: 639px) {
    .admin-stats { grid-template-columns: 1fr; }
    .admin-form-grid { grid-template-columns: 1fr; }
    .admin-toolbar { flex-direction: column; align-items: stretch; }
    .admin-search input { min-width: unset; width: 100%; }
    .admin-topbar-actions .btn span:not(.material-icons-round) { display: none; }
    .admin-stat-card { padding: 14px; }
    .orders-empty { padding: 48px 20px; }
}