:root {
    --primary: #d32f2f;
    --dark: #333;
    --light: #f4f4f4;
    --gray: #ccc;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: var(--dark);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    overflow: hidden;
}

header {
    background: var(--dark);
    color: #fff;
    padding-top: 30px;
    min-height: 70px;
    border-bottom: var(--primary) 3px solid;
}

header a {
    color: #fff;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 16px;
}

header ul {
    padding: 0;
    list-style: none;
}

header li {
    display: inline;
    padding: 0 20px;
}

header #branding {
    float: left;
}

header #branding h1 {
    margin: 0;
}

header nav {
    float: right;
    margin-top: 10px;
}

.car-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px 0;
}

.car-card {
    background: #fff;
    border: 1px solid var(--gray);
    border-radius: 5px;
    overflow: hidden;
}

.car-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.car-card-body {
    padding: 15px;
}

.car-card-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.car-card-price {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: bold;
}

.btn {
    display: inline-block;
    background: var(--dark);
    color: #fff;
    padding: 10px 20px;
    text-decoration: none;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.btn:hover {
    background: var(--primary);
}

/* Admin Styles */
.admin-layout {
    display: flex;
}
.admin-sidebar {
    width: 250px;
    background: var(--dark);
    color: #fff;
    min-height: 100vh;
    padding: 20px;
}
.admin-sidebar a { color: #fff; display:block; padding: 10px 0; }
.admin-main {
    flex: 1;
    padding: 20px;
}
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--gray);
    border-radius: 4px;
}

/* Inline button that looks like a text link (used for POST actions) */
.link-btn {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    font: inherit;
    cursor: pointer;
    text-decoration: underline;
}

/* Admin: stack the sidebar on top on small screens so the content gets full width */
@media (max-width: 768px) {
    .admin-layout { flex-direction: column; }
    .admin-sidebar {
        width: auto;
        min-height: 0;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 4px 20px;
    }
    .admin-sidebar h2 { width: 100%; }
    .admin-sidebar a { display: inline-block; padding: 8px 0; }
    .admin-main { padding: 15px; overflow-x: auto; }
    .admin-main table { font-size: 14px; }
}