:root {
    /* Colors - placeholders until brand is verified */
    --color-background: #ffffff;
    --color-surface: #f9fafb;
    --color-text: #111827;
    --color-text-muted: #6b7280;
    --color-primary: #f97316; /* Example primary orange */
    --color-primary-hover: #ea580c;
    --color-border: #e5e7eb;
    --color-error: #ef4444;

    /* Typography */
    --font-heading: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --space-6: 3rem;
    --space-8: 4rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;

    /* Layout */
    --container-max: 1200px;
}

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.5;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: var(--space-3);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

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

.section {
    padding: var(--space-8) 0;
}

/* Header */
header {
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) 0;
}

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

.nav-links {
    display: flex;
    gap: var(--space-4);
    align-items: center;
}

.btn {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background-color: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-weight: 500;
    text-align: center;
}

.btn:hover {
    background-color: var(--color-primary-hover);
    text-decoration: none;
}

/* Hero */
.hero {
    text-align: center;
    padding: var(--space-8) 0;
    background-color: var(--color-surface);
}

.hero h1 {
    font-size: 2.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

.hero .actions {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

/* Vehicles Catalogue */
.catalogue-header {
    text-align: center;
    margin-bottom: var(--space-5);
}

.category-filters {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.category-btn {
    padding: var(--space-2) var(--space-4);
    border: 1px solid var(--color-border);
    background: transparent;
    border-radius: 999px;
    cursor: pointer;
}

.category-btn.active {
    background: var(--color-text);
    color: #fff;
    border-color: var(--color-text);
}

.vehicle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
}

.vehicle-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.vehicle-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--color-surface);
}

.vehicle-content {
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.vehicle-name {
    font-size: 1.25rem;
    margin-bottom: var(--space-1);
}

.vehicle-price {
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
}

.vehicle-content .btn {
    margin-top: auto;
    width: 100%;
}