/* RIFT ATTIRE LLC - Premium Streetwear E-commerce */

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary-cyan: #00f0ff;
    --primary-purple: #b366ff;
    --dark-bg: #0a0a0a;
    --dark-card: #151515;
    --dark-elevated: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-gradient: linear-gradient(135deg, #00f0ff 0%, #b366ff 100%);
    --success: #00ff88;
    --error: #ff3366;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Outfit', 'Inter', sans-serif;
    
    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== GLOBAL RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

input, textarea, select {
    font-family: inherit;
    border: none;
    outline: none;
}

/* ===== HEADER & NAVIGATION ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
}

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

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-menu a {
    font-weight: 500;
    position: relative;
}

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

.nav-menu a:hover::after {
    width: 100%;
}

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

.search-icon, .cart-icon {
    font-size: 1.25rem;
    cursor: pointer;
    position: relative;
}

.cart-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent-gradient);
    color: var(--text-primary);
    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;
    background: none;
    color: var(--text-primary);
}

/* ===== HERO SECTION ===== */
.hero {
    margin-top: 70px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.1) 0%, rgba(179, 102, 255, 0.1) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    padding: var(--spacing-md);
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
    letter-spacing: -2px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ===== BUTTONS ===== */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
}

.btn-secondary {
    background: var(--dark-card);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--dark-elevated);
    border-color: var(--primary-cyan);
}

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

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

/* ===== PRODUCT GRID ===== */
.section {
    padding: var(--spacing-xxl) var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

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

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.product-card {
    background: var(--dark-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-cyan);
}

.product-image {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    background: var(--dark-elevated);
}

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

.product-category {
    font-size: 0.875rem;
    color: var(--primary-cyan);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
}

.product-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.product-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ===== FILTERS ===== */
.filters {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    align-items: center;
}

.filter-group {
    display: flex;
    gap: var(--spacing-xs);
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--dark-card);
    color: var(--text-secondary);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.filter-btn.active {
    background: var(--accent-gradient);
    color: var(--text-primary);
    border-color: transparent;
}

.search-bar {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--dark-card);
    color: var(--text-primary);
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.search-input:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

/* ===== CART PAGE ===== */
.cart-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    margin-top: 100px;
}

.cart-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.cart-item {
    display: flex;
    gap: var(--spacing-md);
    background: var(--dark-card);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.cart-item-image {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.cart-item-details {
    flex: 1;
}

.cart-item-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

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

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

.quantity-btn {
    width: 32px;
    height: 32px;
    background: var(--dark-elevated);
    color: var(--text-primary);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
}

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

.cart-summary {
    background: var(--dark-card);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
    height: fit-content;
    position: sticky;
    top: 100px;
}

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

.summary-total {
    font-size: 1.5rem;
    font-weight: 800;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: var(--spacing-md);
}

/* ===== CHECKOUT PAGE ===== */
.checkout-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    margin-top: 100px;
}

.checkout-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-section {
    background: var(--dark-card);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-section h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--dark-elevated);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-input:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

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

.payment-methods {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.payment-method {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--dark-elevated);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    cursor: pointer;
    text-align: center;
    transition: var(--transition);
}

.payment-method.active {
    border-color: var(--primary-cyan);
    background: rgba(0, 240, 255, 0.1);
}

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

/* ===== FOOTER ===== */
.footer {
    background: var(--dark-card);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xxl) var(--spacing-md) var(--spacing-lg);
    margin-top: var(--spacing-xxl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
}

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

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--text-secondary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .cart-container,
    .checkout-container {
        grid-template-columns: 1fr;
    }
    
    .cart-summary {
        position: static;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-md);
    }
    
    .filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-bar {
        max-width: 100%;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.mt-100 {
    margin-top: 100px;
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}