/* Nike Website Styles - Volcanic Glass Theme */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-card: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-orange: #ff6b2b;
    --accent-orange-light: #ff8c5a;
    --border-color: #2a2a2a;
    --gradient-hero: linear-gradient(135deg, #ff6b2b 0%, #ff3cac 50%, #7c3aed 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 4%;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.nav-brand {
    display: flex;
    align-items: center;
}

.swoosh {
    width: 60px;
    height: 24px;
    fill: var(--text-primary);
    transition: fill 0.3s ease;
}

.swoosh:hover {
    fill: var(--accent-orange);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-orange);
}

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

.nav-actions {
    display: flex;
    gap: 16px;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 12px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 20px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.icon-btn:hover {
    background: var(--bg-card);
    color: var(--accent-orange);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 4% 40px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(255, 107, 43, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    z-index: 1;
}

.hero-tag {
    display: inline-block;
    padding: 8px 20px;
    background: var(--accent-orange);
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-radius: 20px;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease;
}

.hero-title {
    font-family: 'Anton', sans-serif;
    font-size: clamp(80px, 15vw, 180px);
    line-height: 0.9;
    letter-spacing: -4px;
    margin-bottom: 24px;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: fadeInUp 0.6s ease 0.3s both;
}

/* Buttons */
.btn {
    padding: 14px 32px;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: var(--accent-orange);
    color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 107, 43, 0.3);
}

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

.btn-secondary:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-white:hover {
    background: var(--accent-orange);
    color: var(--text-primary);
}

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

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

/* Categories Section */
.categories {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding: 60px 4%;
    max-width: 1400px;
    margin: 0 auto;
}

.category-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 40px 24px;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    border: 1px solid var(--border-color);
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.8) 100%);
    z-index: 1;
}

.category-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-orange);
    box-shadow: 0 20px 40px rgba(255, 107, 43, 0.15);
}

.category-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    z-index: 2;
    position: relative;
}

.category-card a {
    color: var(--accent-orange);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    z-index: 2;
    position: relative;
    transition: color 0.3s ease;
}

.category-card a:hover {
    color: var(--accent-orange-light);
}

.category-large {
    grid-column: span 2;
    grid-row: span 2;
    min-height: 400px;
}

.category-large h3 {
    font-size: 36px;
}

/* Trending Section */
.trending {
    padding: 80px 4%;
    max-width: 1400px;
    margin: 0 auto;
}

.trending h2 {
    font-family: 'Anton', sans-serif;
    font-size: clamp(40px, 6vw, 64px);
    margin-bottom: 40px;
    letter-spacing: -1px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
    border: 1px solid var(--border-color);
}

.product-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-orange);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.product-image {
    aspect-ratio: 1;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    position: relative;
}

.product-image::after {
    content: '👟';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 80px;
    opacity: 0.3;
}

.product-card h4 {
    padding: 16px 16px 4px;
    font-size: 16px;
    font-weight: 600;
}

.product-card p {
    padding: 0 16px;
    font-size: 14px;
    color: var(--text-secondary);
}

.product-card .price {
    padding: 8px 16px 16px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Membership Section */
.membership {
    background: var(--bg-secondary);
    padding: 100px 4%;
    text-align: center;
    margin: 60px 4%;
    border-radius: 24px;
    position: relative;
    overflow: hidden;
}

.membership::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(255, 107, 43, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
}

.membership h2 {
    font-family: 'Anton', sans-serif;
    font-size: clamp(32px, 5vw, 48px);
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.membership p {
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 32px;
    position: relative;
    z-index: 1;
}

.membership .btn {
    margin: 0 8px;
    position: relative;
    z-index: 1;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 60px 4% 30px;
    margin-top: 60px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto 60px;
}

.footer-links h5 {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

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

.footer > p {
    text-align: center;
    color: var(--text-secondary);
    font-size: 12px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

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

/* Responsive */
@media (max-width: 1024px) {
    .categories {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-large {
        grid-column: span 2;
        grid-row: span 1;
        min-height: 280px;
    }
    
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 60px;
    }
    
    .categories {
        grid-template-columns: 1fr;
    }
    
    .category-large {
        grid-column: span 1;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
    }
}