body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0b1220;
    color: #fff;
}

.container {
    max-width: 420px;
    margin: auto;
    padding-bottom: 70px;
}

header {
    padding: 20px;
}

.tagline {
    color: #5a8cff;
    font-size: 14px;
}

.hero {
    background: linear-gradient(135deg,#4a6cf7,#5f4cff);
    margin: 15px;
    padding: 20px;
    border-radius: 20px;
}

.btn {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 10px 18px;
    border-radius: 20px;
    color: #fff;
    text-decoration: none;
    margin-top: 10px;
}

.products {
    padding: 15px;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.card {
    background: #121c2f;
    border-radius: 20px;
    padding: 10px;
    position: relative;
}

.card img {
    width: 100%;
    border-radius: 15px;
}

.premium {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #2ecc71;
    color: #000;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
}

.price {
    font-weight: bold;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    max-width: 420px;
    background: #0f172a;
    display: flex;
    justify-content: space-around;
    padding: 15px 0;
}

.bottom-nav a {
    color: #6b7280;
    text-decoration: none;
}

.bottom-nav .active {
    color: #4a6cf7;
}