:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --accent-color: #ffffff;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

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

header {
    padding: 2rem 5%;
    background: transparent;
    position: absolute;
    width: 100%;
    z-index: 10;
}

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

.logo {
    font-weight: 600;
    font-size: 1.5rem;
    letter-spacing: 2px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 2.5rem;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 1px;
    transition: opacity 0.3s ease;
}

nav ul li a:hover {
    opacity: 0.6;
}

.hero {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    height: 100vh;
    padding: 0;
}

.card {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 5rem;
    overflow: hidden;
    transition: transform 0.5s ease;
    background-size: cover;
    background-position: center;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
    transition: background 0.5s ease;
}

.card:hover::before {
    background: rgba(0, 0, 0, 0.4);
}

.card.construction {
    background-image: url('https://images.unsplash.com/photo-1541888946425-d81bb19480c5?auto=format&fit=crop&q=80&w=1000');
}

.card.apparel {
    background-image: url('https://images.unsplash.com/photo-1490481651871-ab68de25d43d?auto=format&fit=crop&q=80&w=1000');
}

.card.laundry {
    background-image: url('https://images.unsplash.com/photo-1545173168-9f1947eebb7f?auto=format&fit=crop&q=80&w=1000');
}

.card-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
}

.card h2 {
    font-weight: 600;
    font-size: 2rem;
    letter-spacing: 4px;
    margin-bottom: 1.5rem;
}

.btn-explore {
    display: inline-block;
    padding: 0.8rem 2rem;
    border: 1px solid white;
    color: white;
    text-decoration: none;
    font-size: 0.7rem;
    letter-spacing: 2px;
    border-radius: 50px;
    transition: all 0.3s ease;
}

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

footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.7rem;
    color: #888;
    background: white;
}

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
        height: auto;
    }
    .card {
        height: 50vh;
        padding-bottom: 3rem;
    }
    header {
        position: fixed;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(5px);
        padding: 1rem 5%;
    }
    .logo {
        font-size: 1.2rem;
    }
    nav ul li {
        margin-left: 1.5rem;
    }
    .card h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    nav ul li {
        margin-left: 1rem;
    }
    nav ul li a {
        font-size: 0.7rem;
    }
    .card {
        height: 40vh;
    }
}