:root {
    /* Luxury Palette */
    --primary: #D4AF37;
    /* Gold */
    --secondary: #000000;
    /* Pure Black */
    --bg-body: #111111;
    /* Dark Grey */
    --bg-card: #1A1A1A;
    --text-main: #FFFFFF;
    --text-muted: #888888;

    /* Typography */
    --font-heading: 'Cinzel', serif;
    --font-body: 'Lato', sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --header-height: 100px;

    /* UI */
    --border-thin: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="british-racing"] {
    --primary: #C0C0C0;
    /* Silver */
    --secondary: #004225;
    /* British Racing Green */
    --bg-body: #0a2918;
    --bg-card: #0f3d24;
    --text-main: #F0F0F0;
}

[data-theme="modern-white"] {
    --primary: #000000;
    --secondary: #FFFFFF;
    --bg-body: #FFFFFF;
    --bg-card: #F5F5F5;
    --text-main: #111111;
    --text-muted: #555555;
    --border-thin: 1px solid rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.8;
    font-weight: 300;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Header */
header {
    height: var(--header-height);
    background: transparent;
    display: flex;
    align-items: center;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 100;
    border-bottom: var(--border-thin);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 3rem;
    width: 100%;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: 4px;
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary);
}

/* Hero */
.hero {
    height: 100vh;
    background: url('https://images.unsplash.com/photo-1617788138017-80ad40651399?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 2rem;
    border-top: 1px solid var(--primary);
    border-bottom: 1px solid var(--primary);
    padding: 2rem 0;
    display: inline-block;
}

.hero p {
    font-size: 1.1rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 3rem;
}

.btn-luxury {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--text-main);
    padding: 1rem 3rem;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.8rem;
    transition: all 0.3s;
}

.btn-luxury:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--secondary);
}

/* Collection */
.collection {
    padding: 8rem 0;
}

.collection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 4rem;
}

.car-item {
    group: relative;
}

.car-img-wrapper {
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.car-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.7s ease;
    filter: grayscale(30%);
}

.car-item:hover .car-img {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.car-info {
    text-align: center;
}

.car-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.car-price {
    color: var(--primary);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    display: block;
    margin-bottom: 1rem;
}

.car-specs {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Services / Concierge */
.concierge {
    padding: 6rem 0;
    background: var(--bg-card);
    text-align: center;
}

.concierge-grid {
    display: flex;
    justify-content: center;
    gap: 5rem;
    margin-top: 4rem;
    flex-wrap: wrap;
}

.concierge-item {
    max-width: 300px;
}

.concierge-icon {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    display: block;
}

/* Footer */
footer {
    padding: 4rem 0;
    text-align: center;
    border-top: var(--border-thin);
    font-size: 0.8rem;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }

    .concierge-grid {
        flex-direction: column;
        gap: 3rem;
        align-items: center;
    }
}