/* =====================================================
   RENBORA SHOP — STYLESHEET
   Mobile-first, responsive, collapsible filter panel
   ===================================================== */

:root {
    --primary: #007bff;
    --primary-dark: #0056b3;
    --primary-light: #e8f2ff;
    --bg-color: #f0f4f8;
    --text-main: #212529;
    --text-muted: #6c757d;
    --white: #ffffff;
    --border-color: #dee2e6;
    --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.07);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.12);
    --radius: 6px;
    --transition: 0.22s ease;
}

/* ---- Reset ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    font-size: 14px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* =====================================================
   NAVBAR
   ===================================================== */
.navbar {
    background-color: var(--white);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 900;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.09);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.nav-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.nav-search {
    flex: 1;
    max-width: 560px;
    display: flex;
    margin: 0 12px;
    min-width: 0;
}

.nav-search input {
    width: 100%;
    padding: 9px 14px;
    border: 1.5px solid var(--border-color);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    outline: none;
    font-size: 13px;
    background: var(--bg-color);
    transition: border-color var(--transition);
}

.nav-search input:focus {
    border-color: var(--primary);
    background: var(--white);
}

.nav-search button {
    padding: 9px 18px;
    background-color: var(--primary);
    color: var(--white);
    border: 1.5px solid var(--primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    transition: background var(--transition);
    white-space: nowrap;
}

.nav-search button:hover {
    background-color: var(--primary-dark);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-menu a {
    font-size: 13px;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-menu a:hover {
    color: var(--primary);
}

.cart-link {
    position: relative;
    font-size: 18px;
    display: flex;
    align-items: center;
    padding: 2px;
}

.cart-badge {
    position: absolute;
    top: -7px;
    right: -11px;
    background-color: var(--primary);
    color: var(--white);
    font-size: 10px;
    font-weight: 700;
    padding: 1px 5px;
    border-radius: 20px;
    min-width: 18px;
    text-align: center;
}

/* =====================================================
   MAIN CONTAINER
   ===================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px;
    min-height: calc(100vh - 220px);
}

/* =====================================================
   HERO BANNER
   ===================================================== */
.hero-banner {
    background: linear-gradient(135deg, var(--primary-light) 0%, #d6eaff 100%);
    padding: 28px 20px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    text-align: center;
    border: 1px solid #c2dcff;
}

.hero-banner h1 {
    color: var(--primary-dark);
    font-size: clamp(18px, 4vw, 28px);
    margin-bottom: 6px;
    font-weight: 700;
}

.hero-banner p {
    color: var(--text-muted);
    font-size: clamp(12px, 2.5vw, 15px);
}

/* =====================================================
   FILTER TOGGLE BUTTON (mobile-visible pill)
   ===================================================== */
.filter-toggle-btn {
    display: none;
    align-items: center;
    gap: 8px;
    background: var(--white);
    border: 1.5px solid var(--border-color);
    color: var(--text-main);
    padding: 9px 16px;
    border-radius: 24px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 14px;
    transition: border-color var(--transition), box-shadow var(--transition);
    box-shadow: var(--shadow-sm);
}

.filter-toggle-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-toggle-btn[aria-expanded="true"] .filter-toggle-arrow {
    transform: rotate(180deg);
}

.filter-toggle-arrow {
    margin-left: auto;
    display: flex;
    transition: transform var(--transition);
}

/* =====================================================
   PAGE LAYOUT (sidebar + products)
   ===================================================== */
.page-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 22px;
    align-items: start;
}

/* =====================================================
   FILTER SIDEBAR — Desktop
   ===================================================== */
.price-filter-sidebar {
    background-color: var(--white);
    border-radius: var(--radius);
    border: 1.5px solid var(--border-color);
    overflow: hidden;
    position: sticky;
    top: 75px;
    box-shadow: var(--shadow-sm);
}

.filter-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px 12px;
    border-bottom: 1.5px solid var(--border-color);
}

.filter-header h3 {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-main);
}

.filter-close-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 2px;
    border-radius: 4px;
    transition: color var(--transition);
    line-height: 1;
}

.filter-close-btn:hover {
    color: var(--text-main);
}

.price-filters {
    padding: 12px 18px 8px;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 2px;
    transition: background var(--transition);
    border: 1.5px solid transparent;
}

.filter-option:hover {
    background-color: var(--primary-light);
}

.filter-option:has(.price-radio:checked) {
    background-color: var(--primary-light);
    border-color: var(--primary);
}

.price-radio {
    accent-color: var(--primary);
    width: 15px;
    height: 15px;
    cursor: pointer;
    flex-shrink: 0;
}

.filter-label-text {
    font-size: 13px;
    color: var(--text-main);
    line-height: 1.3;
}

.btn-apply-filter {
    display: block;
    width: calc(100% - 36px);
    margin: 10px 18px 16px;
    padding: 10px;
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: background var(--transition);
    text-align: center;
}

.btn-apply-filter:hover {
    background-color: var(--primary-dark);
}

/* =====================================================
   OVERLAY (mobile filter backdrop)
   ===================================================== */
.filter-panel-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.25s ease;
}

/* =====================================================
   PRODUCTS AREA
   ===================================================== */
.main-products {
    min-width: 0;
}

.section-title {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--text-main);
    border-bottom: 2px solid var(--primary);
    padding-bottom: 8px;
    display: inline-block;
    font-weight: 700;
}

/* =====================================================
   HORIZONTAL CATEGORIES
   ===================================================== */
.horizontal-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 14px;
}

.horizontal-categories .category-link {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 20px;
    background-color: var(--white);
    border: 1.5px solid var(--border-color);
    color: var(--text-main);
    transition: all var(--transition);
    font-weight: 500;
    font-size: 12px;
    white-space: nowrap;
}

.horizontal-categories .category-link:hover,
.horizontal-categories .category-link.active {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* =====================================================
   PRODUCT GRID — Desktop: 5 cols, Mobile: 3 cols
   ===================================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
}

.product-card {
    background-color: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    border: 1px solid transparent;
}

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

.product-img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    background-color: #eaeaea;
    display: block;
}

.product-info {
    padding: 10px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.product-title {
    font-size: 12px;
    margin-bottom: 6px;
    color: var(--text-main);
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    overflow: hidden;
    flex-grow: 1;
    line-height: 1.4;
}

.product-price {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 3px;
}

.old-price {
    font-size: 11px;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-right: 6px;
}

.discount-badge {
    font-size: 9px;
    color: var(--primary-dark);
    border: 1px solid var(--primary);
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 600;
}

.product-rating {
    font-size: 11px;
    color: #f4a900;
    margin-bottom: 8px;
}

.btn-primary {
    width: 100%;
    padding: 8px 6px;
    background-color: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 11px;
    cursor: pointer;
    transition: background var(--transition);
    text-align: center;
    letter-spacing: 0.2px;
}

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

/* =====================================================
   PRODUCT DETAIL PAGE — Gallery layout
   ===================================================== */
.product-detail-wrap {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius);
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 30px;
    align-items: start;
    box-shadow: var(--shadow-sm);
}

/* Gallery column */
.detail-gallery {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-width: 0;
}

/* Main image — fixed square, never overflows */
.detail-main-img-wrap {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius);
    overflow: hidden;
    background-color: #eaeaea;
    border: 1.5px solid var(--border-color);
}

.detail-main-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    transition: transform 0.25s ease;
}

.detail-main-img:hover {
    transform: scale(1.03);
}

/* Thumbnail strip */
.detail-thumbs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.detail-thumb {
    width: calc(25% - 6px);
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    background-color: #eaeaea;
    transition: border-color var(--transition), transform var(--transition);
}

.detail-thumb:hover {
    border-color: var(--primary);
    transform: scale(1.04);
}

.detail-thumb.active-thumb {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

/* Detail info section */
.detail-info h1 {
    font-size: 22px;
    margin-bottom: 14px;
}

.detail-rating {
    color: #f4a900;
    font-size: 13px;
    margin-bottom: 14px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
}

.detail-price {
    font-size: 26px;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 18px;
}

.detail-desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 28px;
    white-space: pre-line;
    line-height: 1.7;
}

/* =====================================================
   CART PAGE
   ===================================================== */
.cart-layout {
    display: grid;
    grid-template-columns: 2.5fr 1fr;
    gap: 20px;
}

.cart-items {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.cart-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
}

.cart-item img {
    width: 76px;
    height: 76px;
    object-fit: cover;
    border-radius: var(--radius);
    background-color: #eaeaea;
    flex-shrink: 0;
}

.cart-item-info {
    flex: 1;
    min-width: 0;
}

.cart-item-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cart-item-price {
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
}

.cart-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.qty-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.qty-btn {
    background: #eee;
    border: none;
    width: 26px;
    height: 26px;
    cursor: pointer;
    border-radius: 4px;
    font-weight: 700;
    font-size: 14px;
    transition: background var(--transition);
}

.qty-btn:hover {
    background: #d0d0d0;
}

.remove-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 13px;
    transition: color var(--transition);
}

.remove-btn:hover {
    color: #d32f2f;
}

.cart-summary {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    height: max-content;
    box-shadow: var(--shadow-sm);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 14px;
    font-size: 14px;
}

.summary-total {
    font-weight: 700;
    font-size: 16px;
    margin-bottom: 18px;
    border-top: 1px solid var(--border-color);
    padding-top: 14px;
}

/* =====================================================
   FORMS (Contact & Checkout)
   ===================================================== */
.form-card {
    background: var(--white);
    padding: 28px;
    border-radius: var(--radius);
    max-width: 600px;
    margin: 0 auto;
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 7px;
    font-size: 13px;
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius);
    outline: none;
    font-family: inherit;
    font-size: 13px;
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

.checkout-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}

.checkout-order-summary {
    background: #fafafa;
    border: 1.5px solid var(--border-color);
    padding: 20px;
    border-radius: var(--radius);
}

.checkout-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 13px;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 6px;
}

/* =====================================================
   FOOTER
   ===================================================== */
footer {
    background-color: var(--primary);
    color: var(--white);
    padding: 36px 20px 18px;
    margin-top: 48px;
    font-size: 13px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 28px;
    margin-bottom: 28px;
}

.footer-column h3 {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--white);
    font-weight: 600;
}

.footer-column p {
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.82);
    display: flex;
    align-items: flex-start;
    gap: 9px;
    line-height: 1.5;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.82);
    transition: color var(--transition), transform var(--transition);
    display: inline-block;
    width: fit-content;
    font-size: 13px;
}

.footer-links a:hover {
    color: var(--white);
    transform: translateX(4px);
}

.footer-bottom {
    text-align: center;
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.75);
    font-size: 12px;
}

.social-links {
    display: flex;
    gap: 14px;
    margin-top: 14px;
}

.social-links a {
    color: var(--white);
    transition: transform var(--transition), opacity var(--transition);
    display: flex;
}

.social-links a:hover {
    transform: translateY(-3px);
    opacity: 0.85;
}

/* =====================================================
   RESPONSIVE — Tablet (max 1024px)
   ===================================================== */
@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .page-layout {
        grid-template-columns: 200px 1fr;
        gap: 16px;
    }
}

/* =====================================================
   RESPONSIVE — Mobile (max 768px)
   ===================================================== */
@media (max-width: 768px) {

    /* Nav */
    .nav-search {
        order: 3;
        margin: 0;
        max-width: 100%;
        flex-basis: 100%;
    }

    .nav-logo {
        font-size: 17px;
    }

    .nav-menu {
        gap: 12px;
    }

    .nav-menu li:not(:last-child):not(:nth-last-child(2)) {
        display: none;
    }

    /* Filter toggle */
    .filter-toggle-btn {
        display: flex;
        width: 100%;
        justify-content: flex-start;
    }

    /* Page layout: single column */
    .page-layout {
        display: block;
    }

    /* Filter sidebar: slide-in drawer */
    .price-filter-sidebar {
        position: fixed;
        top: 0;
        left: -300px;
        width: 280px;
        height: 100dvh;
        border-radius: 0;
        border: none;
        border-right: 1.5px solid var(--border-color);
        z-index: 999;
        transition: left 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        overflow-y: auto;
        box-shadow: none;
    }

    .price-filter-sidebar.filter-open {
        left: 0;
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.18);
    }

    .filter-close-btn {
        display: flex;
    }

    .filter-panel-overlay.overlay-visible {
        display: block;
        opacity: 1;
    }

    .btn-apply-filter {
        width: calc(100% - 36px);
    }

    /* Product grid: 3 columns on mobile */
    .product-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 8px;
    }

    .product-info {
        padding: 7px 8px;
    }

    .product-title {
        font-size: 11px;
        margin-bottom: 4px;
        -webkit-line-clamp: 2;
        line-clamp: 2;
    }

    .product-price {
        font-size: 13px;
        margin-bottom: 2px;
    }

    .old-price {
        font-size: 10px;
    }

    .discount-badge {
        font-size: 9px;
    }

    .product-rating {
        font-size: 10px;
        margin-bottom: 6px;
    }

    .btn-primary {
        padding: 6px 4px;
        font-size: 10px;
    }

    /* Detail page — single column, gallery stacks */
    .product-detail-wrap {
        grid-template-columns: 1fr;
        padding: 14px;
        gap: 16px;
    }

    .detail-main-img-wrap {
        max-width: 100%;
    }

    .detail-thumb {
        width: calc(25% - 6px);
    }

    .detail-info h1 {
        font-size: 17px;
    }

    .detail-price {
        font-size: 20px;
    }

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

    /* Checkout */
    .checkout-grid {
        grid-template-columns: 1fr;
    }

    /* Hero */
    .hero-banner {
        padding: 20px 16px;
        margin-bottom: 12px;
    }

    .section-title {
        font-size: 16px;
    }

    /* Categories */
    .horizontal-categories .category-link {
        font-size: 11px;
        padding: 4px 11px;
    }
}

/* =====================================================
   RESPONSIVE — Small mobile (max 480px)
   ===================================================== */
@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    .product-grid {
        gap: 6px;
    }

    .product-info {
        padding: 6px;
    }

    .product-title {
        font-size: 10px;
    }

    .product-price {
        font-size: 12px;
    }

    .btn-primary {
        font-size: 9px;
        padding: 5px 3px;
    }

    .detail-thumb {
        width: calc(25% - 5px);
    }

    footer {
        padding: 28px 14px 14px;
    }
}