:root {
    --bg: #ffffff;
    --text: #000000;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg);
    color: var(--text);
}

h1, h2, .logo {
    font-family: 'Syncopate', sans-serif;
    text-transform: uppercase;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: transparent;
    color: white;
    mix-blend-mode: difference;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 4px;
}

.nav {
    display: flex;
    gap: 40px;
}

.nav a {
    color: inherit;
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 2px;
    font-weight: 600;
}

.cart {
    font-size: 0.85rem;
    letter-spacing: 2px;
    font-weight: 600;
    cursor: pointer;
}

/* Hero */
.hero {
    height: 100vh;
    background: url('https://images.unsplash.com/photo-1490481651871-ab68de25d43d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    color: white;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 10;
}

.hero h1 {
    font-size: 5rem;
    letter-spacing: 8px;
    margin-bottom: 16px;
}

.hero p {
    font-size: 1.25rem;
    letter-spacing: 4px;
    margin-bottom: 40px;
}

.btn {
    display: inline-block;
    padding: 16px 40px;
    background: white;
    color: black;
    text-decoration: none;
    font-family: 'Syncopate', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    transition: 0.3s;
}

.btn:hover {
    background: black;
    color: white;
}

/* Grid Section */
.grid-section {
    display: flex;
    height: 80vh;
}

.grid-item {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    transition: 0.5s;
    overflow: hidden;
}

.item-1 {
    background: url('https://images.unsplash.com/photo-1515886657613-9f3515b0c78f?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover;
}

.item-2 {
    background: url('https://images.unsplash.com/photo-1509319117193-57bab727e09d?ixlib=rb-4.0.3&auto=format&fit=crop&w=800&q=80') center/cover;
}

.grid-item::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.3);
    transition: 0.5s;
}

.grid-item:hover::before {
    background: rgba(0,0,0,0.6);
}

.grid-content {
    position: relative;
    z-index: 2;
}

.grid-content h2 {
    font-size: 2.5rem;
    margin-bottom: 24px;
    letter-spacing: 4px;
}

.grid-content a {
    color: white;
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 2px;
    border-bottom: 1px solid white;
    padding-bottom: 4px;
    transition: 0.3s;
}

.grid-content a:hover {
    opacity: 0.7;
}

/* Footer */
.footer {
    padding: 60px 40px;
    text-align: center;
    background: black;
    color: white;
}

.demo {
    margin-top: 16px;
    font-size: 0.75rem;
    color: #666;
}

@media (max-width: 768px) {
    .nav { display: none; }
    .hero h1 { font-size: 3rem; }
    .grid-section { flex-direction: column; height: 100vh; }
}