/* ===========================
   AETHER STITCH LLC - Mixed Collection
   Premium E-commerce Design System
   =========================== */

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

:root {
    /* Vibrant Gradient Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warm-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --cool-gradient: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    
    /* Solid Colors */
    --primary-purple: #667eea;
    --primary-dark: #764ba2;
    --accent-blue: #4facfe;
    --accent-pink: #f093fb;
    --warm-orange: #fee140;
    
    /* Neutrals */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #495057;
    --black: #212529;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Outfit', 'Inter', 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 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&display=swap');

/* Body & Global Styles */
body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Header */
header {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

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

.logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

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

.nav-links a {
    color: var(--dark-gray);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.cart-btn {
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    position: relative;
}

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

.cart-count {
    background: var(--white);
    color: var(--primary-purple);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

/* Hero Section */
.hero {
    background: var(--primary-gradient);
    padding: var(--spacing-2xl) var(--spacing-lg);
    text-align: center;
    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="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(40px, 40px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    animation: fadeInUp 0.8s ease;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-cta {
    background: var(--white);
    color: var(--primary-purple);
    border: none;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-full);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.hero-cta:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

/* Category Filters */
.category-filters {
    max-width: 1400px;
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--white);
    color: var(--dark-gray);
    border: 2px solid var(--medium-gray);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    transition: left var(--transition-base);
    z-index: -1;
}

.filter-btn:hover::before,
.filter-btn.active::before {
    left: 0;
}

.filter-btn:hover,
.filter-btn.active {
    color: var(--white);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Products Section */
.products-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Product Card */
.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.product-image-container {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
    background: var(--light-gray);
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-image {
    transform: scale(1.1);
}

.product-category {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--white);
    padding: 0.4rem 0.9rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid var(--glass-border);
}

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

.product-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.product-description {
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

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

.add-to-cart-btn {
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.add-to-cart-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.add-to-cart-btn:active {
    transform: scale(0.95);
}

/* Shopping Cart Sidebar */
.cart-sidebar {
    position: fixed;
    right: -400px;
    top: 0;
    width: 400px;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: 2000;
    display: flex;
    flex-direction: column;
}

.cart-sidebar.active {
    right: 0;
}

.cart-header {
    background: var(--primary-gradient);
    color: var(--white);
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
}

.close-cart {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background var(--transition-fast);
}

.close-cart:hover {
    background: rgba(255, 255, 255, 0.2);
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.cart-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--medium-gray);
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.cart-item-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

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

.cart-item-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.cart-item-price {
    color: var(--primary-purple);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.remove-item {
    background: none;
    border: none;
    color: #f5576c;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.remove-item:hover {
    color: #d63447;
    text-decoration: underline;
}

.cart-empty {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--dark-gray);
}

.cart-empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

.cart-footer {
    border-top: 2px solid var(--medium-gray);
    padding: var(--spacing-lg);
    background: var(--light-gray);
}

.cart-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 700;
}

.cart-total-amount {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.75rem;
}

.checkout-btn {
    width: 100%;
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    padding: 1rem;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

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

.checkout-btn:active {
    transform: translateY(0);
}

/* Footer */
footer {
    background: linear-gradient(135deg, #2d3436 0%, #000000 100%);
    color: var(--white);
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.footer-logo {
    font-family: var(--font-display);
    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-md);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* Cart Overlay */
.cart-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1999;
}

.cart-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--spacing-md);
    }
    
    .cart-sidebar {
        width: 100%;
        right: -100%;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .header-container {
        padding: var(--spacing-sm);
    }
    
    .logo {
        font-size: 1.5rem;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-gradient);
}