:root {
    --gold: #c5a059;
    --dark-gold: #a38141;
    --charcoal: #121212;
    --black: #000000;
    --light: #f9f9f9;
    --gray: #333333;
}

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

body {
    background-color: var(--charcoal);
    color: var(--light);
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    background: radial-gradient(circle at center, #1e1e1e 0%, #000 100%);
    min-height: 100vh;
}

h1, h2, h3, h4, .brand-font {
    font-family: 'Playfair Display', serif;
    color: var(--gold);
}

a {
    color: var(--light);
    text-decoration: none;
    transition: 0.3s;
}

a:hover {
    color: var(--gold);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    padding: 20px 0;
    border-bottom: 1px solid rgba(197, 160, 89, 0.2);
    position: sticky;
    top: 0;
    background: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

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

.logo {
    font-size: 2rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-weight: 400;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade {
    animation: fadeIn 1s ease forwards;
    opacity: 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border: 1px solid var(--gold);
    color: var(--gold);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    cursor: pointer;
    background: transparent;
    transition: 0.3s;
}

.btn:hover {
    background: var(--gold);
    color: var(--black);
}

.btn-solid {
    background: var(--gold);
    color: var(--black);
}

.btn-solid:hover {
    background: transparent;
    color: var(--gold);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

input, select, textarea {
    width: 100%;
    padding: 12px;
    background: #1e1e1e;
    border: 1px solid #333;
    color: white;
    font-family: inherit;
}

input:focus {
    outline: none;
    border-color: var(--gold);
}

/* Cards */
.product-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(197, 160, 89, 0.1);
    padding: 15px;
    text-align: center;
    transition: 0.3s;
}

.product-card:hover {
    border-color: var(--gold);
    transform: translateY(-5px);
}

.product-card img {
    width: 100%;
    height: auto;
    margin-bottom: 15px;
}

/* Footer */
footer {
    padding: 60px 0 20px;
    background: var(--black);
    text-align: center;
    margin-top: 100px;
}

.footer-links {
    margin-bottom: 30px;
}

.footer-links a {
    margin: 0 15px;
    opacity: 0.7;
}

.copyright {
    opacity: 0.5;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
}

/* Responsive */
@media (max-width: 768px) {
    #checkout-container {
        grid-template-columns: 1fr !important;
    }
    
    #checkout-container aside {
        order: -1; /* Show summary at top on mobile */
        margin-bottom: 30px;
    }

    .nav-links {
        display: none; /* In a real scenario, implement a hamburger menu */
    }
    h1 {
        font-size: 2.5rem;
    }
}