:root {
    --primary: #2c3e50;
    --secondary: #e74c3c;
    --accent: #3498db;
    --light: #ecf0f1;
    --dark: #2c3e50;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.navbar {
    background: var(--primary);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    color: white;
    font-size: 1.8rem;
    font-weight: bold;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

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

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: var(--primary);
}

.cars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.car-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.car-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.car-image {
    width: 100%;
    height: 250px;
    background: #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    overflow: hidden;
}

.car-info {
    padding: 1.5rem;
}

.car-make {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary);
}

.car-price {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary);
    margin: 0.5rem 0;
}

.car-features {
    display: flex;
    justify-content: space-between;
    margin: 1rem 0;
    color: #666;
    font-size: 0.9rem;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--secondary);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background: #c0392b;
}

.btn-danger {
    background: var(--danger);
}

.btn-danger:hover {
    background: #c0392b;
}

.filter-section {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.filter-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.alert {
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.alert.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.auth-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.car-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.car-detail-images .main-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
}

.car-specs {
    margin: 1.5rem 0;
}

.spec-item {
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.status-available {
    color: var(--success);
    font-weight: bold;
}

.status-sold, .status-reserved {
    color: var(--danger);
    font-weight: bold;
}

.inquiry-form, .contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.contact-item {
    margin-bottom: 1.5rem;
}

.contact-item h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.admin-container {
    max-width: 1200px;
    margin: 100px auto 0;
    padding: 2rem;
}

.admin-nav {
    background: var(--primary);
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 2rem;
}

.admin-nav a {
    color: white;
    text-decoration: none;
    margin-right: 1rem;
    padding: 0.5rem 1rem;
    border-radius: 3px;
}

.admin-nav a:hover {
    background: rgba(255,255,255,0.1);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--secondary);
}

table {
    width: 100%;
    background: white;
    border-collapse: collapse;
    margin-bottom: 2rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border-radius: 5px;
    overflow: hidden;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background: var(--primary);
    color: white;
}

tr:hover {
    background: #f5f5f5;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.about-stats .stat-card {
    text-align: center;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

footer {
    background: var(--dark);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .cars-grid {
        grid-template-columns: 1fr;
    }
    
    .car-detail {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
}