* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f4f4f4;
}

/* নেভিগেশন */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #333;
    color: #fff;
    padding: 15px 5%;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

.logo span {
    color: #ff9800;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    color: white;
    text-decoration: none;
}

.menu-icon {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* হিরো সেকশন */
.hero {
    height: 60vh;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://images.unsplash.com/photo-1434493907317-a46b53b81846?auto=format&fit=crop&q=80&w=1200');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
}

.hero h1 { font-size: 3rem; margin-bottom: 10px; }

.btn {
    background: #ff9800;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
    display: inline-block;
    margin-top: 20px;
}

/* প্রোডাক্ট কার্ড */
.section-title { text-align: center; margin: 40px 0; }

.product-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 0 5%;
}

.product-card {
    background: white;
    padding: 20px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.product-card img {
    max-width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
}

.product-card h3 { margin: 15px 0; }

.product-card button {
    background: #333;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 5px;
    transition: 0.3s;
}

.product-card button:hover { background: #ff9800; }

footer {
    background: #222;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

/* মোবাইল রেসপন্সিভ */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        background: #333;
        position: absolute;
        top: 60px;
        left: 0;
        text-align: center;
    }
    .nav-links.active { display: flex; }
    .nav-links li { margin: 15px 0; }
    .menu-icon { display: block; }
    .hero h1 { font-size: 2rem; }
}