/* ============================================
   GlobalSupply600 - Main Stylesheet
   Premium E-Commerce Design System
   ============================================ */

/* ── CSS Custom Properties ── */
:root {
    /* Brand Colors */
    --color-primary: #1a1a2e;
    --color-primary-light: #16213e;
    --color-accent: #0f3460;
    --color-accent-vibrant: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-light: #dbeafe;
    
    /* Neutrals */
    --color-black: #0a0a0a;
    --color-gray-900: #111827;
    --color-gray-800: #1f2937;
    --color-gray-700: #374151;
    --color-gray-600: #4b5563;
    --color-gray-500: #6b7280;
    --color-gray-400: #9ca3af;
    --color-gray-300: #d1d5db;
    --color-gray-200: #e5e7eb;
    --color-gray-100: #f3f4f6;
    --color-gray-50: #f9fafb;
    --color-white: #ffffff;
    
    /* Semantic */
    --color-success: #059669;
    --color-success-light: #d1fae5;
    --color-warning: #d97706;
    --color-warning-light: #fef3c7;
    --color-error: #dc2626;
    --color-error-light: #fee2e2;
    --color-info: #2563eb;
    --color-info-light: #dbeafe;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.8125rem;
    --text-base: 0.9375rem;
    --text-md: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Layout */
    --container-max: 1280px;
    --container-narrow: 960px;
    --container-wide: 1440px;
    
    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.06), 0 4px 6px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px rgba(0,0,0,0.08), 0 8px 10px rgba(0,0,0,0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Header */
    --header-height: 64px;
    --announcement-height: 36px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
ul, ol { list-style: none; }
input, select, textarea { font: inherit; }
h1, h2, h3, h4, h5, h6 { line-height: 1.2; font-weight: 600; color: var(--color-gray-900); }

/* ── Container ── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}
.container-narrow { max-width: var(--container-narrow); }
.container-wide { max-width: var(--container-wide); }

/* ── Announcement Bar ── */
.announcement-bar {
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: var(--space-2) 0;
    font-size: var(--text-xs);
    letter-spacing: 0.02em;
    height: var(--announcement-height);
    display: flex;
    align-items: center;
}
.announcement-bar p { opacity: 0.9; }

/* ── Header ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    height: var(--header-height);
    transition: box-shadow var(--transition-base), background var(--transition-base);
}
.site-header.scrolled {
    box-shadow: var(--shadow-md);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--space-8);
}

/* Logo */
.logo { display: inline-flex; align-items: center; }
.logo-text {
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-gray-900);
}
.logo-accent { color: var(--color-accent-vibrant); }
.logo-num {
    font-weight: 300;
    color: var(--color-gray-400);
    font-size: 0.8em;
}

/* Navigation */
.main-nav { flex: 1; display: flex; justify-content: center; }
.nav-list { display: flex; gap: var(--space-1); }
.nav-link {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background var(--transition-fast);
    position: relative;
}
.nav-link:hover, .nav-link.active {
    color: var(--color-gray-900);
    background: var(--color-gray-50);
}
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-accent-vibrant);
    border-radius: 1px;
}

/* Dropdown */
.nav-dropdown { position: relative; }
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--space-2);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    pointer-events: none;
}
.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}
.dropdown-item {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.dropdown-item:hover {
    background: var(--color-gray-50);
    color: var(--color-gray-900);
}

/* Header Actions */
.header-actions { display: flex; align-items: center; gap: var(--space-2); }
.header-action-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-gray-600);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.header-action-btn:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}
.cart-btn { position: relative; }
.cart-count {
    position: absolute;
    top: 4px;
    right: 2px;
    background: var(--color-accent-vibrant);
    color: var(--color-white);
    font-size: 10px;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

/* Hamburger */
.hamburger {
    display: none;
    width: 40px;
    height: 40px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    border-radius: var(--radius-md);
}
.hamburger span {
    width: 20px;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: 1px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Search Overlay */
.search-overlay {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    padding: var(--space-6) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}
.search-overlay.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.search-form {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}
.search-input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-md);
    outline: none;
    transition: border-color var(--transition-fast);
}
.search-input:focus { border-color: var(--color-accent-vibrant); }
.search-submit, .search-close {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-gray-500);
    transition: background var(--transition-fast), color var(--transition-fast);
}
.search-submit:hover, .search-close:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}

/* Mobile Nav */
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    backdrop-filter: blur(4px);
}
.mobile-nav-overlay.active { opacity: 1; visibility: visible; }
.mobile-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    background: var(--color-white);
    z-index: 1002;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    overflow-y: auto;
}
.mobile-nav.active { transform: translateX(0); }
.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
}
.mobile-nav-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-gray-500);
}
.mobile-nav-list { padding: var(--space-4); }
.mobile-nav-list li a {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-md);
    font-weight: 500;
    color: var(--color-gray-700);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}
.mobile-nav-list li a:hover { background: var(--color-gray-50); }
.mobile-nav-sub {
    padding-left: var(--space-8) !important;
    font-size: var(--text-sm) !important;
    font-weight: 400 !important;
    color: var(--color-gray-500) !important;
}

/* ── Flash Messages ── */
.flash-message {
    padding: var(--space-3) 0;
    font-size: var(--text-sm);
    font-weight: 500;
    animation: slideDown 0.3s ease;
}
.flash-message .container { display: flex; align-items: center; justify-content: space-between; }
.flash-close {
    font-size: var(--text-xl);
    cursor: pointer;
    opacity: 0.7;
    background: none;
    border: none;
    color: inherit;
}
.flash-success { background: var(--color-success-light); color: var(--color-success); }
.flash-error { background: var(--color-error-light); color: var(--color-error); }
.flash-warning { background: var(--color-warning-light); color: var(--color-warning); }
.flash-info { background: var(--color-info-light); color: var(--color-info); }

@keyframes slideDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.5;
    white-space: nowrap;
}
.btn-primary {
    background: var(--color-accent-vibrant);
    color: var(--color-white);
}
.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.btn-secondary {
    background: var(--color-gray-900);
    color: var(--color-white);
}
.btn-secondary:hover {
    background: var(--color-gray-800);
    transform: translateY(-1px);
}
.btn-outline {
    background: transparent;
    border: 1.5px solid var(--color-gray-300);
    color: var(--color-gray-700);
}
.btn-outline:hover {
    border-color: var(--color-gray-900);
    color: var(--color-gray-900);
}
.btn-ghost {
    background: transparent;
    color: var(--color-gray-600);
}
.btn-ghost:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-md); }
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ── Hero Section ── */
.hero {
    position: relative;
    padding: var(--space-24) 0;
    background: linear-gradient(135deg, #f8fafc 0%, #eef2ff 50%, #f0f9ff 100%);
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37,99,235,0.06) 0%, transparent 70%);
    border-radius: 50%;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(37,99,235,0.04) 0%, transparent 70%);
    border-radius: 50%;
}
.hero .container { position: relative; z-index: 1; }
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}
.hero-text { max-width: 560px; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent-light);
    color: var(--color-accent-vibrant);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
    letter-spacing: 0.02em;
}
.hero h1 {
    font-size: var(--text-5xl);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-6);
    color: var(--color-gray-900);
}
.hero h1 span { color: var(--color-accent-vibrant); }
.hero-desc {
    font-size: var(--text-lg);
    color: var(--color-gray-500);
    line-height: 1.7;
    margin-bottom: var(--space-8);
    max-width: 480px;
}
.hero-buttons { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
.hero-visual-inner {
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-accent-light) 0%, #e0e7ff 100%);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.hero-visual-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-xl);
}
.hero-stats {
    display: flex;
    gap: var(--space-10);
    margin-top: var(--space-10);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-200);
}
.hero-stat-value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
}
.hero-stat-label {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    margin-top: var(--space-1);
}

/* ── Section Styles ── */
.section {
    padding: var(--space-20) 0;
}
.section-sm { padding: var(--space-12) 0; }
.section-lg { padding: var(--space-24) 0; }
.section-alt { background: var(--color-gray-50); }
.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}
.section-header h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
}
.section-header p {
    font-size: var(--text-md);
    color: var(--color-gray-500);
    max-width: 560px;
    margin: 0 auto;
}
.section-header-left { text-align: left; }

/* ── Category Cards ── */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-4);
}
.category-card {
    position: relative;
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-8) var(--space-4);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid transparent;
    overflow: hidden;
}
.category-card:hover {
    background: var(--color-white);
    border-color: var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.category-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-4);
    background: var(--color-accent-light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-vibrant);
    transition: background var(--transition-base), color var(--transition-base);
}
.category-card:hover .category-icon {
    background: var(--color-accent-vibrant);
    color: var(--color-white);
}
.category-card h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-gray-800);
}
.category-card .category-count {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
    margin-top: var(--space-1);
}

/* ── Product Cards ── */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}
.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}
.product-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: transparent;
    transform: translateY(-2px);
}
.product-card-image {
    position: relative;
    aspect-ratio: 1;
    background: var(--color-gray-100);
    overflow: hidden;
}
.product-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.product-card:hover .product-card-image img {
    transform: scale(1.05);
}
.product-badge {
    position: absolute;
    top: var(--space-3);
    left: var(--space-3);
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
    z-index: 2;
}
.badge-sale { background: var(--color-error); color: var(--color-white); }
.badge-new { background: var(--color-accent-vibrant); color: var(--color-white); }
.badge-out { background: var(--color-gray-600); color: var(--color-white); }

.product-card-actions {
    position: absolute;
    bottom: var(--space-3);
    left: var(--space-3);
    right: var(--space-3);
    display: flex;
    gap: var(--space-2);
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-base);
}
.product-card:hover .product-card-actions {
    opacity: 1;
    transform: translateY(0);
}
.product-card-actions .btn { flex: 1; font-size: var(--text-xs); padding: var(--space-2) var(--space-3); }

.product-card-body { padding: var(--space-4); }
.product-card-category {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-1);
}
.product-card-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-gray-800);
    margin-bottom: var(--space-2);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-card-title a { transition: color var(--transition-fast); }
.product-card-title a:hover { color: var(--color-accent-vibrant); }
.product-rating {
    display: flex;
    align-items: center;
    gap: 1px;
    margin-bottom: var(--space-2);
}
.star { font-size: 12px; font-style: normal; }
.star-full { color: #f59e0b; }
.star-half { color: #f59e0b; opacity: 0.6; }
.star-empty { color: var(--color-gray-300); }
.product-rating-count { font-size: var(--text-xs); color: var(--color-gray-400); margin-left: var(--space-1); }
.product-card-price { display: flex; align-items: center; gap: var(--space-2); }
.product-price {
    font-size: var(--text-md);
    font-weight: 700;
    color: var(--color-gray-900);
}
.product-price-original {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    text-decoration: line-through;
}

/* ── Features Section ── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
}
.feature-card {
    text-align: center;
    padding: var(--space-8);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}
.feature-card:hover {
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
}
.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-5);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-vibrant);
    transition: background var(--transition-base), color var(--transition-base);
}
.feature-card:hover .feature-icon {
    background: var(--color-accent-vibrant);
    color: var(--color-white);
}
.feature-card h3 {
    font-size: var(--text-md);
    font-weight: 600;
    margin-bottom: var(--space-2);
}
.feature-card p {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    line-height: 1.6;
}

/* ── Promo Banner ── */
.promo-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    padding: var(--space-20) 0;
    position: relative;
    overflow: hidden;
}
.promo-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
}
.promo-content {
    text-align: center;
    position: relative;
    z-index: 1;
}
.promo-content h2 {
    font-size: var(--text-4xl);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}
.promo-content p {
    font-size: var(--text-lg);
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-8);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}
.promo-content .btn-primary {
    background: var(--color-white);
    color: var(--color-primary);
}
.promo-content .btn-primary:hover {
    background: var(--color-gray-100);
}

/* ── Newsletter ── */
.newsletter {
    padding: var(--space-16) 0;
    background: var(--color-gray-50);
}
.newsletter-inner {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
}
.newsletter h2 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-3);
}
.newsletter p {
    color: var(--color-gray-500);
    margin-bottom: var(--space-6);
}
.newsletter-form {
    display: flex;
    gap: var(--space-3);
}
.newsletter-form input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: 1.5px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    outline: none;
    transition: border-color var(--transition-fast);
}
.newsletter-form input:focus { border-color: var(--color-accent-vibrant); }
.newsletter-msg {
    margin-top: var(--space-3);
    font-size: var(--text-sm);
}

/* ── Footer ── */
.site-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--space-16) 0 var(--space-8);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-10);
    padding-bottom: var(--space-10);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo-text { color: var(--color-white); }
.footer-tagline {
    margin-top: var(--space-4);
    font-size: var(--text-sm);
    line-height: 1.7;
    max-width: 320px;
}
.footer-social {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
}
.social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.06);
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}
.social-link:hover {
    background: var(--color-accent-vibrant);
    color: var(--color-white);
}
.footer-heading {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-5);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.footer-links li { margin-bottom: var(--space-3); }
.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--color-white); }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-8);
    font-size: var(--text-xs);
}
.footer-payment {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}
.payment-label {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    margin-right: var(--space-2);
}

/* ── Back to Top ── */
.back-to-top {
    position: fixed;
    bottom: var(--space-8);
    right: var(--space-8);
    width: 44px;
    height: 44px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-600);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    z-index: 100;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    background: var(--color-gray-900);
    color: var(--color-white);
    border-color: var(--color-gray-900);
}

/* ── Page Header / Breadcrumb ── */
.page-header {
    background: var(--color-gray-50);
    padding: var(--space-10) 0;
    border-bottom: 1px solid var(--color-gray-200);
}
.page-header h1 {
    font-size: var(--text-3xl);
    font-weight: 700;
    letter-spacing: -0.02em;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    margin-top: var(--space-2);
}
.breadcrumb a { color: var(--color-gray-500); transition: color var(--transition-fast); }
.breadcrumb a:hover { color: var(--color-accent-vibrant); }
.breadcrumb-sep { color: var(--color-gray-300); }

/* ── Shop Page ── */
.shop-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--space-8);
    padding: var(--space-10) 0;
}
.shop-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--space-6));
    height: fit-content;
}
.sidebar-section { margin-bottom: var(--space-8); }
.sidebar-section h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-gray-200);
}
.sidebar-categories li { margin-bottom: var(--space-1); }
.sidebar-categories a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}
.sidebar-categories a:hover, .sidebar-categories a.active {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}
.sidebar-categories .cat-count {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
}

/* Price Range */
.price-inputs {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}
.price-inputs input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    outline: none;
}
.price-inputs input:focus { border-color: var(--color-accent-vibrant); }
.price-inputs span { color: var(--color-gray-400); font-size: var(--text-sm); }

/* Shop Toolbar */
.shop-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-gray-200);
}
.shop-toolbar .result-count {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}
.shop-toolbar select {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    outline: none;
    background: var(--color-white);
    cursor: pointer;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-10);
}
.pagination a, .pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--space-3);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
}
.pagination a:hover {
    border-color: var(--color-accent-vibrant);
    color: var(--color-accent-vibrant);
}
.pagination .active {
    background: var(--color-accent-vibrant);
    border-color: var(--color-accent-vibrant);
    color: var(--color-white);
}

/* ── Product Detail ── */
.product-detail {
    padding: var(--space-10) 0 var(--space-20);
}
.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: start;
}
.product-gallery {}
.product-gallery-main {
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-gray-100);
    margin-bottom: var(--space-4);
}
.product-gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-gallery-thumbs {
    display: flex;
    gap: var(--space-3);
}
.product-thumb {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    transition: border-color var(--transition-fast);
    background: var(--color-gray-100);
}
.product-thumb.active, .product-thumb:hover { border-color: var(--color-accent-vibrant); }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; }

.product-info {}
.product-info-category {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-gray-400);
    margin-bottom: var(--space-2);
}
.product-info h1 {
    font-size: var(--text-3xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
}
.product-info-rating {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}
.product-info-rating .count {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}
.product-info-price {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
}
.product-info-price .current {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-gray-900);
}
.product-info-price .original {
    font-size: var(--text-xl);
    color: var(--color-gray-400);
    text-decoration: line-through;
}
.product-info-price .discount {
    padding: var(--space-1) var(--space-3);
    background: var(--color-error-light);
    color: var(--color-error);
    font-size: var(--text-xs);
    font-weight: 600;
    border-radius: var(--radius-sm);
}
.product-info-desc {
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}
.product-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
}
.product-meta-row {
    display: flex;
    gap: var(--space-3);
    font-size: var(--text-sm);
}
.product-meta-label {
    color: var(--color-gray-400);
    min-width: 80px;
}
.product-meta-value {
    color: var(--color-gray-800);
    font-weight: 500;
}
.stock-in { color: var(--color-success) !important; }
.stock-low { color: var(--color-warning) !important; }
.stock-out { color: var(--color-error) !important; }

.product-actions {
    display: flex;
    gap: var(--space-4);
    align-items: center;
    margin-bottom: var(--space-6);
}
.quantity-selector {
    display: flex;
    align-items: center;
    border: 1.5px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.quantity-selector button {
    width: 40px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    transition: background var(--transition-fast);
}
.quantity-selector button:hover { background: var(--color-gray-100); }
.quantity-selector input {
    width: 50px;
    height: 44px;
    text-align: center;
    border: none;
    border-left: 1px solid var(--color-gray-300);
    border-right: 1px solid var(--color-gray-300);
    font-weight: 600;
    outline: none;
}

/* ── Cart Page ── */
.cart-page { padding: var(--space-10) 0 var(--space-20); }
.cart-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--space-8);
    align-items: start;
}
.cart-table { width: 100%; }
.cart-table th {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-400);
    font-weight: 600;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-gray-200);
    text-align: left;
}
.cart-table td {
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-gray-100);
    vertical-align: middle;
}
.cart-item-info {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}
.cart-item-image {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-gray-100);
    flex-shrink: 0;
}
.cart-item-image img { width: 100%; height: 100%; object-fit: cover; }
.cart-item-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-gray-800);
}
.cart-remove {
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}
.cart-remove:hover { color: var(--color-error); }

.cart-summary {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    border: 1px solid var(--color-gray-200);
    position: sticky;
    top: calc(var(--header-height) + var(--space-6));
}
.cart-summary h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-6);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-gray-200);
}
.cart-summary-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}
.cart-summary-total {
    display: flex;
    justify-content: space-between;
    padding-top: var(--space-4);
    margin-top: var(--space-4);
    border-top: 2px solid var(--color-gray-900);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-gray-900);
}
.cart-summary .btn { margin-top: var(--space-6); }
.cart-empty {
    text-align: center;
    padding: var(--space-20) 0;
}
.cart-empty h2 { margin-bottom: var(--space-4); }
.cart-empty p { color: var(--color-gray-500); margin-bottom: var(--space-8); }

/* ── Checkout ── */
.checkout-page { padding: var(--space-10) 0 var(--space-20); }
.checkout-layout {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: var(--space-10);
    align-items: start;
}
.checkout-section {
    margin-bottom: var(--space-8);
}
.checkout-section h2 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-gray-200);
}

/* Forms */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}
.form-group {
    margin-bottom: var(--space-4);
}
.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}
.form-group label .required { color: var(--color-error); }
.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1.5px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--color-gray-800);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background: var(--color-white);
}
.form-control:focus {
    border-color: var(--color-accent-vibrant);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.form-control.error { border-color: var(--color-error); }
.form-error {
    font-size: var(--text-xs);
    color: var(--color-error);
    margin-top: var(--space-1);
}
textarea.form-control { min-height: 120px; resize: vertical; }
select.form-control { cursor: pointer; }

/* Checkout Order Summary */
.checkout-summary {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    border: 1px solid var(--color-gray-200);
    position: sticky;
    top: calc(var(--header-height) + var(--space-6));
}
.checkout-summary h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-6);
}
.checkout-item {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-gray-200);
}
.checkout-item:last-of-type { border-bottom: none; }
.checkout-item-image {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-gray-200);
    flex-shrink: 0;
    position: relative;
}
.checkout-item-image img { width: 100%; height: 100%; object-fit: cover; }
.checkout-item-qty {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 20px;
    height: 20px;
    background: var(--color-gray-600);
    color: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
}
.checkout-item-details { flex: 1; }
.checkout-item-name { font-size: var(--text-sm); font-weight: 500; }
.checkout-item-price {
    font-size: var(--text-sm);
    font-weight: 600;
    text-align: right;
    white-space: nowrap;
}

/* ── Order Success ── */
.order-success {
    text-align: center;
    padding: var(--space-20) 0;
    max-width: 640px;
    margin: 0 auto;
}
.success-icon {
    width: 80px;
    height: 80px;
    background: var(--color-success-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-6);
    color: var(--color-success);
}
.order-success h1 { margin-bottom: var(--space-4); }
.order-success .order-number {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-accent-vibrant);
    margin-bottom: var(--space-4);
}
.order-success p { color: var(--color-gray-500); margin-bottom: var(--space-3); }
.order-details-box {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin: var(--space-8) 0;
    text-align: left;
    border: 1px solid var(--color-gray-200);
}
.order-details-box h3 {
    font-size: var(--text-md);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-gray-200);
}

/* ── Order Tracking ── */
.tracking-form {
    max-width: 480px;
    margin: 0 auto;
    padding: var(--space-10) 0 var(--space-20);
}
.tracking-form h2 { text-align: center; margin-bottom: var(--space-6); }

.tracking-timeline {
    max-width: 640px;
    margin: 0 auto;
    padding: var(--space-8) 0 var(--space-20);
}
.timeline-step {
    display: flex;
    gap: var(--space-5);
    position: relative;
    padding-bottom: var(--space-8);
}
.timeline-step:last-child { padding-bottom: 0; }
.timeline-step::before {
    content: '';
    position: absolute;
    left: 17px;
    top: 36px;
    width: 2px;
    bottom: 0;
    background: var(--color-gray-200);
}
.timeline-step:last-child::before { display: none; }
.timeline-step.completed::before { background: var(--color-success); }
.timeline-dot {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: 2px solid var(--color-gray-300);
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-gray-400);
    font-size: var(--text-sm);
    z-index: 1;
}
.timeline-step.completed .timeline-dot {
    background: var(--color-success);
    border-color: var(--color-success);
    color: var(--color-white);
}
.timeline-step.current .timeline-dot {
    border-color: var(--color-accent-vibrant);
    color: var(--color-accent-vibrant);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(37,99,235,0.3); }
    50% { box-shadow: 0 0 0 8px rgba(37,99,235,0); }
}
.timeline-content h4 {
    font-size: var(--text-md);
    margin-bottom: var(--space-1);
}
.timeline-content p {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

/* ── Contact Page ── */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    padding: var(--space-10) 0 var(--space-20);
}
.contact-info-card {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}
.contact-info-icon {
    width: 48px;
    height: 48px;
    background: var(--color-accent-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-vibrant);
    flex-shrink: 0;
}
.contact-info-card h4 {
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-1);
}
.contact-info-card p { font-size: var(--text-sm); color: var(--color-gray-500); }

/* ── Static Pages ── */
.static-page { padding: var(--space-10) 0 var(--space-20); }
.static-page .container { max-width: var(--container-narrow); }
.static-content h2 {
    font-size: var(--text-xl);
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
}
.static-content h3 {
    font-size: var(--text-lg);
    margin-top: var(--space-6);
    margin-bottom: var(--space-3);
}
.static-content p {
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: var(--space-4);
}
.static-content ul, .static-content ol {
    list-style: disc;
    padding-left: var(--space-6);
    margin-bottom: var(--space-4);
}
.static-content li {
    color: var(--color-gray-600);
    line-height: 1.8;
    margin-bottom: var(--space-2);
}
.static-content strong { color: var(--color-gray-800); }

/* ── Error Pages ── */
.error-page {
    text-align: center;
    padding: var(--space-24) 0;
}
.error-page .error-code {
    font-size: 120px;
    font-weight: 800;
    color: var(--color-gray-200);
    line-height: 1;
    letter-spacing: -0.05em;
}
.error-page h1 { margin-top: var(--space-4); margin-bottom: var(--space-4); }
.error-page p { color: var(--color-gray-500); margin-bottom: var(--space-8); }

/* ── Loading Spinner ── */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-accent-vibrant);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

/* ── Responsive ── */
@media (max-width: 1200px) {
    .products-grid { grid-template-columns: repeat(3, 1fr); }
    .categories-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-text { max-width: 100%; margin: 0 auto; }
    .hero-desc { margin: 0 auto var(--space-8); }
    .hero-buttons { justify-content: center; }
    .hero-visual { display: none; }
    .hero-stats { justify-content: center; }
    
    .shop-layout { grid-template-columns: 220px 1fr; gap: var(--space-6); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .checkout-layout { grid-template-columns: 1fr; }
    .checkout-summary { position: static; }
}

@media (max-width: 768px) {
    :root {
        --header-height: 56px;
        --text-5xl: 2.25rem;
        --text-4xl: 1.75rem;
        --text-3xl: 1.5rem;
    }
    
    .container { padding: 0 var(--space-4); }
    .main-nav { display: none; }
    .hamburger { display: flex; }
    
    .products-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
    .categories-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-3); }
    
    .shop-layout { grid-template-columns: 1fr; }
    .shop-sidebar {
        position: static;
        display: none;
    }
    .shop-sidebar.active { display: block; }
    
    .product-detail-grid { grid-template-columns: 1fr; gap: var(--space-6); }
    .cart-layout { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
    .footer-bottom { flex-direction: column; gap: var(--space-4); text-align: center; }
    
    .hero { padding: var(--space-16) 0; }
    .hero-stats { flex-wrap: wrap; gap: var(--space-6); }
    
    .section { padding: var(--space-12) 0; }
    .section-lg { padding: var(--space-16) 0; }
    
    .form-row { grid-template-columns: 1fr; }
    
    /* Mobile filter toggle */
    .filter-toggle {
        display: flex;
        align-items: center;
        gap: var(--space-2);
        padding: var(--space-3) var(--space-4);
        background: var(--color-gray-100);
        border-radius: var(--radius-md);
        font-size: var(--text-sm);
        font-weight: 500;
        margin-bottom: var(--space-4);
    }
}

@media (max-width: 480px) {
    .products-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
    .categories-grid { grid-template-columns: repeat(2, 1fr); }
    
    .product-card-body { padding: var(--space-3); }
    .product-card-title { font-size: var(--text-xs); }
    .product-price { font-size: var(--text-sm); }
    
    .hero h1 { font-size: 1.75rem; }
    .hero-desc { font-size: var(--text-sm); }
    
    .newsletter-form { flex-direction: column; }
    .newsletter-form .btn { width: 100%; }
    
    .cart-table th:nth-child(3), .cart-table td:nth-child(3) { display: none; }
    
    .promo-content h2 { font-size: var(--text-2xl); }
}

@media (max-width: 360px) {
    .categories-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-buttons { flex-direction: column; align-items: center; }
    .hero-buttons .btn { width: 100%; }
}

/* ── Utility Classes ── */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.hidden { display: none !important; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* Product image placeholder */
.product-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    color: var(--color-gray-400);
}