@media (max-width: 1024px) {
    .topbar-address {
        display: none;
    }

    .nav-desktop {
        display: none;
    }

    .products-layout {
        grid-template-columns: 220px 1fr;
    }

    .product-detail-grid {
        grid-template-columns: 1fr;
    }

    .product-gallery {
        position: static;
    }

    .cart-layout {
        grid-template-columns: 1fr;
    }

    .cart-summary {
        position: static;
    }

    .about-intro {
        grid-template-columns: 1fr;
    }

    .about-intro-visual {
        display: none;
    }

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

    .account-layout {
        grid-template-columns: 220px 1fr;
    }

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

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

    .checkout-layout {
        grid-template-columns: 1fr;
    }

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

    .home-about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .checkout-layout {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .topbar {
        height: auto;
        padding: 6px 0;
    }

    .topbar-inner {
        flex-wrap: wrap;
        gap: 4px;
    }

    .topbar-left {
        gap: 10px;
        font-size: 0.72rem;
        flex-wrap: wrap;
    }

    .topbar-social {
        display: none;
    }

    .header-inner {
        height: 56px;
    }

    .logo-tagline {
        display: none;
    }

    .logo-name {
        font-size: 1.1rem;
    }

    .hamburger {
        display: flex;
    }

    .page-title {
        font-size: 1.6rem;
    }

    .page-desc {
        font-size: 0.85rem;
    }

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

    .hero-desc {
        font-size: 0.9rem;
    }

    .hero-visual {
        display: none;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-btns {
        display: grid;
    }

    .hero-stats {
        flex-direction: column;
        align-items: center;
    }

    .features-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .feature-item {
        padding: 12px;
    }

    .feature-item span.material-icons-outlined {
        font-size: 20px;
    }

    .feature-item strong {
        font-size: 0.75rem;
    }

    .feature-item span:not(.material-icons-outlined) {
        font-size: 0.68rem;
    }

    .section-title {
        font-size: 1.4rem;
    }

    .section-desc {
        font-size: 0.85rem;
    }

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

    .category-card {
        padding: 16px;
    }

    .category-icon {
        width: 48px;
        height: 48px;
    }

    .category-card h3 {
        font-size: 0.85rem;
    }

    .category-card p {
        font-size: 0.72rem;
        display: none;
    }

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

    .product-card {
        padding: 0;
    }

    .product-name {
        font-size: 0.8rem;
    }

    .product-brand {
        font-size: 0.68rem;
    }
    .add-to-cart {
        font-size: 10px;
    }
    .promo-layout {
        grid-template-columns: 1fr;
    }

    .promo-grid {
        grid-template-columns: 1fr;
    }

    .brands-slider {
        gap: 20px;
    }

    .about-inner {
        grid-template-columns: 1fr;
    }

    .about-numbers {
        grid-template-columns: 1fr 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .newsletter-inner {
        flex-direction: column;
        text-align: center;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .products-layout {
        grid-template-columns: 1fr;
    }

    .products-sidebar {
        position: static;
        display: none;
    }

    .products-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .products-sort {
        flex-wrap: wrap;
    }

    .cart-header-row {
        display: none;
    }

    .cart-item {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 16px 0;
    }

    .cart-item-product {
        flex-direction: row;
        align-items: center;
    }

    .cart-item-price,
    .cart-item-qty,
    .cart-item-total {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .cart-item-price::before {
        content: attr(data-label);
        font-size: 0.8rem;
        color: var(--text-secondary);
    }

    .cart-actions-row {
        flex-direction: column;
        gap: 12px;
    }

    .auth-card {
        padding: 24px 16px;
        margin: 0 -4px;
    }

    .auth-card-wide {
        max-width: 100%;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .why-us-grid {
        grid-template-columns: 1fr 1fr;
    }

    .about-stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .tracking-form {
        flex-direction: column;
    }

    .tracking-header-card {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .account-layout {
        grid-template-columns: 1fr;
    }

    .account-sidebar {
        position: static;
    }

    .account-nav-link {
        padding: 8px 12px;
        font-size: 0.8rem;
    }

    .account-nav-link .material-icons-outlined {
        font-size: 18px;
    }

    .order-row {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        font-size: 0.8rem;
    }

    .order-header-row {
        display: none;
    }

    .dashboard-cards {
        grid-template-columns: 1fr 1fr;
    }

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

    .expertise-grid {
        grid-template-columns: 1fr;
    }

    .steps-grid {
        grid-template-columns: 1fr 1fr;
    }

    .why-us-grid {
        grid-template-columns: 1fr;
    }

    .detail-guarantees {
       grid-auto-rows: 2fr;
    }

    .tab-nav {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        white-space: nowrap;
        padding: 10px 16px;
        font-size: 0.8rem;
    }

    .detail-title {
        font-size: 1.3rem;
    }

    .price-current-lg {
        font-size: 1.5rem;
    }

    .meta-label {
        width: 120px;
        font-size: 0.8rem;
    }

    .meta-value {
        font-size: 0.8rem;
    }

    .detail-actions {
        flex-direction: column;
    }

    .detail-actions .btn {
        width: 100%;
        justify-content: center;
    }

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

    .categories-grid-full {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .category-card-image {
        height: 120px;
    }

    .category-img-icon {
        font-size: 48px;
    }

    .category-card-body {
        padding: 14px;
    }

    .category-card-body p {
        display: none;
    }

    .category-card-large {
        padding: 16px;
        gap: 12px;
    }

    .category-card-icon {
        width: 50px;
        height: 50px;
    }

    .category-card-icon .material-icons-outlined {
        font-size: 24px;
    }

    .category-card-content h2 {
        font-size: 0.95rem;
    }

    .category-card-content p {
        display: none;
    }

    .checkout-layout {
        grid-template-columns: 1fr;
    }

    .checkout-summary {
        position: static;
    }

    .faq-question {
        padding: 14px 16px;
        font-size: 0.85rem;
    }

    .faq-answer p {
        padding: 0 16px 14px;
        font-size: 0.8rem;
    }

    .sticky-social {
        bottom: 80px;
    }

    .color-picker {
        bottom: 140px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }
    /* hamburger */
    .mobile-sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 280px;
    height: 100vh;
    z-index: 9999;
    transition: left 0.3s ease;
    display: block;
}

.mobile-sidebar.active {
    left: 0;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-sidebar.active .sidebar-overlay {
    display: block;
    opacity: 1;
}

.sidebar-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
    z-index: 9999;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
}

.sidebar-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-nav {
    padding: 20px 0;
    flex: 1;
    overflow-y: auto;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    font-size: 0.95rem;
    transition: background 0.2s, color 0.2s;
}

.sidebar-link:hover {
    background: rgba(0, 0, 0, 0.02);
    color: var(--primary);
}

.sidebar-link .material-icons-outlined,
.sidebar-link .material-icons {
    font-size: 20px;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(0,0,0,0.05);
    margin-top: auto;
}

.sidebar-social {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.sidebar-social a {
    color: #555;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-social a:hover {
    color: var(--primary);
}

.search-bar {
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    background: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    z-index: 990;
    transition: top 0.3s ease;
}

.search-bar.active {
    top: 100%;
}

.search-bar-inner {
    display: flex;
    align-items: center;
    height: 60px;
    gap: 15px;
    padding: 0 15px;
}

.search-bar-inner input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 1rem;
    height: 100%;
}

.search-close {
    background: none;
    border: none;
    cursor: pointer;
}

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-stats {
        gap: 16px;
        display: flex;
        flex-direction: row;
    }

    .stat-number {
        font-size: 1.2rem;
    }

    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
  .features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .features-grid .feature-item {
    min-height: 100px;
    padding: 12px;
    font-size: 14px;
  }
  .features-grid .feature-item .material-icons-outlined {
    font-size: 32px;
  }
  .features-grid .feature-item strong {
    font-size: 14px;
  }
  .features-grid .feature-item span {
    font-size: 12px;
  }
    .page-hero-sm {
    padding: 12px 0;
  }
  .page-hero-sm .breadcrumb {
    flex-wrap: wrap;
    font-size: 13px;
    gap: 4px;
  }
  .page-hero-sm .breadcrumb .material-icons {
    font-size: 16px;
  }
    .about-numbers {
        grid-template-columns: 1fr;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .why-us-grid {
        grid-template-columns: 1fr;
    }


    .page-title {
        font-size: 1.3rem;
    }

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

    .tracking-timeline {
        padding-left: 24px;
    }

    .tracking-step {
        gap: 12px;
    }

    .step-content h4 {
        font-size: 0.85rem;
    }
}

.mobile-sidebar .sidebar-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.mobile-sidebar .sidebar-nav {
    flex: 1;
    overflow-y: auto;
}

.mobile-sidebar .sidebar-footer {
    border-top: 1px solid var(--border);
    padding-top: 16px;
    margin-top: auto;
}

.sidebar-contact-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0 20px;
    margin-bottom: 16px;
}

.sidebar-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.sidebar-contact-item .material-icons-outlined {
    font-size: 18px;
    color: var(--primary);
}

.sidebar-contact-item a {
    color: var(--text-secondary);
}

.sidebar-contact-item a:hover {
    color: var(--primary);
}