/* ============================================
   THRIFTARCH DECOR LLC - Modern Industrial Theme
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@300;400;500;600;700&family=Roboto:wght@300;400;500;700&display=swap');

/* ============================================
   CSS Variables - Dark Industrial Palette
   ============================================ */
:root {
    /* Primary Colors - Steel & Metal */
    --primary: #00D9FF;
    --primary-dark: #00B8D4;
    --primary-light: #33E1FF;

    /* Secondary Colors - Industrial Orange */
    --secondary: #FF6B35;
    --secondary-dark: #E65527;
    --secondary-light: #FF8557;

    /* Accent Colors - Metallic */
    --accent: #FFD700;
    --accent-dark: #E6C200;
    --accent-light: #FFE033;

    /* Dark Mode Colors */
    --background: #0F1419;
    --surface: #1A1F26;
    --surface-elevated: #252B34;
    --text-primary: #E8EAED;
    --text-secondary: #9AA0A6;
    --text-light: #6B7280;
    --border: #2D3748;
    --border-light: #374151;

    /* Shadows - Dark Mode */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(0, 217, 255, 0.3);

    /* Typography */
    --font-heading: 'Rajdhani', sans-serif;
    --font-body: 'Roboto', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius - Sharp Angular */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 6px;
    --radius-xl: 8px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-base);
}

button {
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-base);
}

input,
textarea,
select {
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: all var(--transition-base);
    background-color: var(--surface);
    color: var(--text-primary);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 217, 255, 0.2);
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 600;
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

.text-large {
    font-size: 1.25rem;
    line-height: 1.8;
}

.text-small {
    font-size: 0.875rem;
}

.text-xs {
    font-size: 0.75rem;
}

/* ============================================
   Layout Components
   ============================================ */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-wide {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-2xl) 0;
}

.section-lg {
    padding: 5rem 0;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-col {
    display: flex;
    flex-direction: column;
}

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

/* ============================================
   Card Components
   ============================================ */
.card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--border);
}

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

.card-elevated {
    background: var(--surface-elevated);
    box-shadow: var(--shadow-md);
}

.card-product {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 1px solid var(--border);
    position: relative;
}

.card-product::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card-product:hover::before {
    opacity: 1;
}

.card-product:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
    border-color: var(--primary);
}

.card-product img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    margin-bottom: var(--spacing-sm);
    filter: brightness(0.9) contrast(1.1);
    transition: filter var(--transition-base);
}

.card-product:hover img {
    filter: brightness(1) contrast(1.2);
}

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

.card-product h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    text-transform: none;
    letter-spacing: normal;
}

.card-product .category {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.card-product .price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    font-family: var(--font-heading);
}

.card-product .original-price {
    font-size: 1rem;
    color: var(--text-light);
    text-decoration: line-through;
    margin-left: var(--spacing-xs);
}

.card-product .rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.card-product .rating .stars {
    color: var(--accent);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-align: center;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--background);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.4);
    transform: translateY(-2px);
}

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

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

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   Header & Navigation
   ============================================ */
header {
    background: var(--surface);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--border);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--spacing-md);
    max-width: 1440px;
    margin: 0 auto;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.logo span {
    color: var(--secondary);
}

nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

nav a {
    color: var(--text-primary);
    font-weight: 500;
    transition: color var(--transition-base);
    position: relative;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

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

nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-base);
}

nav a:hover::after {
    width: 100%;
}

.nav-icons {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.cart-badge {
    position: relative;
}

.cart-badge .badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--secondary);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--background) 0%, var(--surface) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, rgba(0, 217, 255, 0.05) 100%);
    clip-path: polygon(20% 0%, 100% 0%, 100% 100%, 0% 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text .subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
}

.hero-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    border: 2px solid var(--border);
}

.hero-badge {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    background: var(--surface-elevated);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
}

.hero-badge h4 {
    margin: 0;
    color: var(--primary);
}

/* ============================================
   Category Cards
   ============================================ */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.category-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 1px solid var(--border);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary);
}

.category-card .icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    filter: grayscale(0.3);
}

.category-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.category-card p {
    font-size: 0.875rem;
    color: var(--text-light);
    margin: 0;
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.section-header-left {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   Product Grid
   ============================================ */
.products-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.filters-sidebar {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    height: fit-content;
    position: sticky;
    top: 100px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.filter-group {
    margin-bottom: var(--spacing-lg);
}

.filter-group h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.filter-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.filter-group input[type="checkbox"],
.filter-group input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary);
}

.price-range {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.price-range input {
    width: 100%;
}

/* ============================================
   Product Details
   ============================================ */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-lg);
}

.product-gallery {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.product-gallery .main-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
    border: 2px solid var(--border);
}

.product-gallery .main-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.product-info {
    background: var(--surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.product-info .category {
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.product-info h1 {
    margin-bottom: var(--spacing-sm);
}

.product-info .rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.product-info .price-section {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.product-info .price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    font-family: var(--font-heading);
}

.product-info .original-price {
    font-size: 1.5rem;
    color: var(--text-light);
    text-decoration: line-through;
    margin-left: var(--spacing-sm);
}

.variant-selector {
    margin: var(--spacing-lg) 0;
}

.variant-selector h4 {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.variant-options {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.variant-option {
    padding: 0.75rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--surface-elevated);
}

.variant-option:hover {
    border-color: var(--primary);
}

.variant-option.active {
    border-color: var(--primary);
    background: var(--primary);
    color: var(--background);
}

.quantity-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--surface-elevated);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    border: 1px solid var(--border);
}

.quantity-controls button {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: var(--background);
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.quantity-controls span {
    min-width: 40px;
    text-align: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.product-tabs {
    margin-top: var(--spacing-xl);
}

.tab-buttons {
    display: flex;
    gap: var(--spacing-sm);
    border-bottom: 2px solid var(--border);
    margin-bottom: var(--spacing-lg);
}

.tab-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: none;
    border: none;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: color var(--transition-base);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

.tab-button.active {
    color: var(--primary);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================
   Cart & Checkout
   ============================================ */
.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--surface);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.cart-item img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.cart-item-info h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.cart-item-info .variant {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.cart-item-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
}

.cart-item-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    font-family: var(--font-heading);
}

.cart-summary {
    background: var(--surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 100px;
    border: 1px solid var(--border);
}

.cart-summary h3 {
    margin-bottom: var(--spacing-md);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.summary-row.total {
    border-top: 2px solid var(--border);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 700;
}

.checkout-form {
    background: var(--surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.payment-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.payment-option {
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
    background: var(--surface-elevated);
}

.payment-option:hover {
    border-color: var(--primary);
}

.payment-option.active {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 107, 53, 0.1));
    box-shadow: var(--shadow-glow);
}

/* ============================================
   Footer
   ============================================ */
footer {
    background: var(--surface);
    color: var(--text-primary);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
    border-top: 2px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-xs);
}

.footer-section a {
    color: var(--text-secondary);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
    color: var(--text-light);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .products-container {
        grid-template-columns: 1fr;
    }

    .filters-sidebar {
        position: static;
    }

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

    .hero-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    nav ul {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }

    .hero {
        padding: 3rem 0;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

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

    .payment-methods {
        grid-template-columns: 1fr;
    }

    .cart-item {
        grid-template-columns: 80px 1fr;
    }

    .cart-item img {
        width: 80px;
        height: 80px;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

.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);
}

.hidden {
    display: none;
}

.visible {
    display: block;
}

/* Angular Grid Background */
.angular-bg {
    position: relative;
    overflow: hidden;
}

.angular-bg::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(90deg, var(--border) 1px, transparent 1px),
        linear-gradient(0deg, var(--border) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.1;
    pointer-events: none;
}