:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --text-light: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --danger: #ef4444;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Glassmorphism utility */
.glassmorphism {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    text-decoration: none;
    letter-spacing: 1px;
}

.logo span {
    color: var(--primary);
}

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

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.9)), url('https://images.unsplash.com/photo-1503377212946-8be36ce448c2?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
    margin-top: 0;
    padding-top: 70px;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 20px;
    font-weight: 700;
    background: linear-gradient(to right, #fff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
}

/* Button */
.btn {
    display: inline-block;
    padding: 12px 28px;
    background-color: var(--primary);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-danger {
    background-color: var(--danger);
}
.btn-danger:hover {
    background-color: #dc2626;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Inventory Section */
.inventory-section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--primary);
    border-radius: 2px;
}

.vehicle-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.vehicle-card {
    background-color: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--glass-border);
}

.vehicle-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.vehicle-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.vehicle-details {
    padding: 20px;
}

.vehicle-make-model {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.vehicle-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 15px;
}

.vehicle-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 15px;
}

/* Footer */
.footer {
    background-color: #0b1120;
    padding: 60px 0 20px;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 1.8rem;
    color: var(--text-light);
    margin-bottom: 10px;
}

.footer-brand h3 span {
    color: var(--primary);
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-links h4 {
    margin-bottom: 20px;
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    background-color: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-light);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background-color: rgba(255,255,255,0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.admin-container {
    padding: 100px 20px 40px;
    max-width: 800px;
    margin: 0 auto;
}

.admin-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

th {
    background-color: rgba(0,0,0,0.2);
    font-weight: 600;
}

/* Utility */
.text-center { text-align: center; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-4 { margin-top: 1.5rem; }
.flex { display: flex; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-4 { gap: 1rem; }

/* Responsive Adjustments */
.vehicle-details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

@media (max-width: 900px) {
    .admin-container {
        flex-direction: column !important;
        padding: 20px !important;
        margin-top: 20px;
    }
    .sidebar {
        width: 100% !important;
        height: auto !important;
        position: static !important;
        margin-bottom: 20px;
    }
    .admin-card {
        padding: 20px;
    }
}

@media (max-width: 768px) {
    /* Navbar */
    .nav-content {
        flex-direction: column;
        height: auto;
        padding: 15px 0;
        gap: 15px;
    }
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    /* Hero */
    .hero {
        padding-top: 100px;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero p {
        font-size: 1rem;
        padding: 0 15px;
    }
    
    /* Search Box */
    .search-box {
        margin-top: -30px;
        padding: 20px;
    }
    
    /* Vehicle Grid */
    .vehicle-grid {
        grid-template-columns: 1fr;
    }
    
    /* Vehicle Details */
    .vehicle-details-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .vehicle-details-grid .vehicle-card {
        padding: 20px !important;
    }
    
    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: left;
    }
    
    /* Forms */
    .flex.gap-4 {
        flex-direction: column;
        gap: 15px;
    }
}