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

body {
    background-color: #0f111a;
    color: #ffffff;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: #1a1d2b;
    border-bottom: 1px solid #30363d;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #ff4b4b;
}

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

nav ul li { margin-left: 20px; }

nav ul li a {
    text-decoration: none;
    color: #cbd5e1;
    cursor: pointer;
}

header {
    text-align: center;
    padding: 3rem 1rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 2rem 5%;
}

/* Modal Styling */
.modal {
    display: none;
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
}

.modal-content {
    background-color: #1a1d2b;
    margin: 10% auto;
    padding: 20px;
    border: 1px solid #ff4b4b;
    width: 90%;
    max-width: 500px;
    border-radius: 8px;
}

.close {
    float: right;
    font-size: 28px;
    cursor: pointer;
}

form input, form textarea {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    background: #0f111a;
    border: 1px solid #30363d;
    color: white;
    border-radius: 4px;
}

.buy-btn {
    background: #ff4b4b;
    color: white;
    border: none;
    padding: 12px;
    width: 100%;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #8b949e;
}