/* ===== CSS Custom Properties ===== */
:root {
    --color-primary: #3b5998;
    --color-primary-light: #4c70ba;
    --color-primary-dark: #2d4373;
    --color-secondary: #8b9dc3;
    --color-secondary-light: #a7b9dc;
    --color-bg: #f5f6f7;
    --color-bg-white: #ffffff;
    --color-bg-dark: #2d4373;
    --color-bg-footer: #1a2a4a;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-on-dark: #e0e0e0;
    --color-border: #dee2e6;
    --color-shadow: rgba(0, 0, 0, 0.08);
    --color-shadow-hover: rgba(0, 0, 0, 0.15);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --max-width: 1200px;
    --header-height: 64px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-primary-light);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Header ===== */
.site-header {
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.site-logo img {
    height: 40px;
    width: auto;
}

.site-logo span {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-primary);
}

/* ===== Navigation ===== */
.main-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.main-nav a {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    transition: background 0.2s ease, color 0.2s ease;
    white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
    background: var(--color-primary);
    color: #fff;
}

/* Cart Icon */
.cart-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.cart-count {
    position: absolute;
    top: -6px;
    right: -8px;
    background: var(--color-secondary);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Hamburger Menu (Mobile) */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#nav-toggle {
    display: none;
}

@media (max-width: 767px) {
    .hamburger {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg-white);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-lg);
        gap: var(--spacing-xs);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
        z-index: 99;
    }

    #nav-toggle:checked ~ .main-nav {
        transform: translateX(0);
    }

    .main-nav a {
        padding: var(--spacing-md);
        font-size: 1rem;
        border-radius: var(--radius-md);
    }
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* ===== Hero Section ===== */
.hero {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: #fff;
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2xl);
}

.hero h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.9;
}

@media (min-width: 768px) {
    .hero {
        padding: calc(var(--spacing-2xl) * 1.5) var(--spacing-2xl);
    }
    .hero h1 {
        font-size: 2.5rem;
    }
}

/* ===== Product / Motif Cards ===== */
.card-grid,
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .card-grid,
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

@media (min-width: 1024px) {
    .card-grid,
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

.card,
.product-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 1px 3px var(--color-shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover,
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 12px var(--color-shadow-hover);
}

.card-image {
    aspect-ratio: 1;
    overflow: hidden;
    background: var(--color-bg);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: var(--spacing-sm);
    transition: transform 0.3s ease;
}

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

.card-body {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--color-text);
}

.card-price {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1rem;
}

/* ===== Section Headers ===== */
.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary-dark);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 1.75rem;
    }
}

/* ===== Category Teasers ===== */
.category-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}

.category-list a {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--color-text);
    transition: all 0.2s ease;
}

.category-list a:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ===== Banner ===== */
.banner {
    background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
    color: #fff;
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-2xl);
}

.banner h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.banner p {
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
}

.banner a {
    color: #fff;
    text-decoration: underline;
    font-weight: 600;
}

/* ===== Countdown Timer ===== */
.countdown-timer {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-primary-dark);
    color: #fff;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .countdown-timer {
        font-size: 2.25rem;
    }
}

/* ===== Detail Page ===== */
.detail-header {
    display: grid;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .detail-header {
        grid-template-columns: 1fr 1fr;
    }
}

.detail-image {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px var(--color-shadow);
}

.detail-image img {
    max-height: 400px;
    object-fit: contain;
}

.detail-info h1 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary-dark);
}

.detail-info .description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.detail-info .price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.form-group select,
.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="email"],
.form-group input[type="password"] {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: var(--font-family);
    background: var(--color-bg-white);
    transition: border-color 0.2s ease;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(42, 77, 143, 0.15);
}

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease;
    text-align: center;
}

.btn:active {
    transform: scale(0.98);
}

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

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

.btn-secondary {
    background: var(--color-secondary);
    color: #fff;
}

.btn-secondary:hover {
    background: var(--color-secondary-light);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* ===== Cart ===== */
.cart-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-xl);
}

.cart-table th,
.cart-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.cart-table th {
    font-weight: 600;
    background: var(--color-bg);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cart-quantity {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.cart-quantity input {
    width: 50px;
    text-align: center;
}

.cart-summary {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 1px 3px var(--color-shadow);
    text-align: right;
}

.cart-summary .total {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-2xl);
}

.pagination a,
.pagination span {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    min-width: 40px;
    text-align: center;
}

.pagination a:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.pagination .current {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ===== Filters ===== */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.filter-bar select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: var(--font-family);
    background: var(--color-bg-white);
}

/* ===== Personalize Page ===== */
.personalize-intro {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    box-shadow: 0 1px 3px var(--color-shadow);
}

.personalize-intro h1 {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary-dark);
}

.personalize-intro p {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-text-light);
}

.empty-state h2 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.empty-state a {
    color: var(--color-primary);
    font-weight: 600;
}

/* ===== 404 Page ===== */
.not-found {
    text-align: center;
    padding: var(--spacing-2xl);
}

.not-found h1 {
    font-size: 4rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.not-found p {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* ===== Breadcrumbs ===== */
.breadcrumbs {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

.breadcrumbs a {
    color: var(--color-text-light);
}

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

.breadcrumbs span {
    margin: 0 var(--spacing-xs);
}

/* ===== Motif Detail Sellables Grid ===== */
.motif-sellables {
    margin-top: var(--spacing-2xl);
}

.motif-sellables .section-title {
    margin-bottom: var(--spacing-md);
}

/* ===== Product Gallery ===== */
.product-gallery {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.product-gallery .thumb {
    width: 60px;
    height: 60px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    overflow: hidden;
    opacity: 0.6;
    transition: opacity 0.2s ease, border-color 0.2s ease;
}

.product-gallery .thumb:hover,
.product-gallery .thumb.active {
    opacity: 1;
    border-color: var(--color-primary);
}

.product-gallery .thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--color-bg-footer);
    color: var(--color-text-on-dark);
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-col h3 {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.footer-col p,
.footer-col a {
    color: var(--color-text-on-dark);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-col a:hover {
    color: #fff;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }