:root {
    --bg-dark: #0d1117;
    --bg-card: #161b22;
    --bg-input: #21262d;
    --border: #30363d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --success: #3fb950;
    --danger: #f85149;
    --warning: #d29922;
    --purple: #a371f7;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--accent-hover);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navigation */
header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

nav ul li a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--text-primary);
}

nav ul li a.btn-primary {
    background: var(--accent);
    color: var(--bg-dark);
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
}

nav ul li a.btn-primary:hover {
    background: var(--accent-hover);
    color: var(--bg-dark);
}

/* Search Section */
.search-section {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--border);
}

.search-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.search-box input,
.search-box select {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 14px 16px;
    border-radius: 10px;
    font-size: 15px;
    width: 100%;
    transition: border-color 0.3s;
}

.search-box input:focus,
.search-box select:focus {
    outline: none;
    border-color: var(--accent);
}

.search-box button {
    background: var(--accent);
    color: var(--bg-dark);
    border: none;
    padding: 14px 30px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.search-box button:hover {
    background: var(--accent-hover);
}

/* Featured Vehicles */
.featured-section {
    padding: 60px 0;
}

.section-title {
    font-size: 32px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.section-title span {
    color: var(--accent);
}

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

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

.vehicle-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.vehicle-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    background: var(--bg-input);
}

.vehicle-info {
    padding: 20px;
}

.vehicle-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.vehicle-price {
    font-size: 24px;
    font-weight: bold;
    color: var(--success);
    margin-bottom: 15px;
}

.vehicle-details {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.vehicle-detail {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-secondary);
    font-size: 14px;
}

.vehicle-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: var(--bg-input);
    color: var(--text-secondary);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
}

/* Auth Pages */
.auth-page {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.auth-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 50px;
    width: 100%;
    max-width: 450px;
}

.auth-title {
    font-size: 28px;
    text-align: center;
    margin-bottom: 10px;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 14px 16px;
    border-radius: 10px;
    font-size: 15px;
    width: 100%;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.btn {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    text-align: center;
    width: 100%;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-dark);
}

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

.btn-success {
    background: var(--success);
    color: var(--bg-dark);
}

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

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

.auth-footer {
    text-align: center;
    margin-top: 25px;
    color: var(--text-secondary);
}

/* Dashboard Layout */
.dashboard-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: calc(100vh - 80px);
}

.sidebar {
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: 30px 20px;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 8px;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: 10px;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: var(--bg-input);
    color: var(--text-primary);
}

.sidebar-menu a.active {
    border-left: 3px solid var(--accent);
}

.dashboard-content {
    padding: 30px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 25px;
}

.stat-card h3 {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 10px;
}

.stat-card .value {
    font-size: 36px;
    font-weight: bold;
    color: var(--text-primary);
}

.stat-card .value.accent {
    color: var(--accent);
}

.stat-card .value.success {
    color: var(--success);
}

/* Table Styles */
.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    background: var(--bg-input);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
}

.table tr:hover {
    background: var(--bg-input);
}

.status-badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-pending {
    background: rgba(210, 153, 34, 0.2);
    color: var(--warning);
}

.status-approved {
    background: rgba(63, 185, 80, 0.2);
    color: var(--success);
}

.status-rejected {
    background: rgba(248, 81, 73, 0.2);
    color: var(--danger);
}

/* Messages */
.message-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s;
}

.message-item:hover {
    border-color: var(--accent);
}

.message-item.unread {
    border-left: 3px solid var(--accent);
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.message-sender {
    font-weight: 600;
    color: var(--text-primary);
}

.message-date {
    color: var(--text-secondary);
    font-size: 13px;
}

.message-subject {
    color: var(--accent);
    margin-bottom: 8px;
}

.message-preview {
    color: var(--text-secondary);
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Forms */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.image-upload {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.3s;
}

.image-upload:hover {
    border-color: var(--accent);
}

.image-upload input {
    display: none;
}

.image-upload-icon {
    font-size: 48px;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

/* Filters */
.filters-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 25px;
    margin-bottom: 30px;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.filter-group label {
    color: var(--text-secondary);
    font-size: 13px;
}

.filter-group select {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 10px 14px;
    border-radius: 8px;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 40px;
}

.pagination a {
    display: inline-block;
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.pagination a:hover,
.pagination a.active {
    background: var(--accent);
    color: var(--bg-dark);
    border-color: var(--accent);
}

/* Vehicle Detail */
.vehicle-detail-page {
    padding: 40px 0;
}

.vehicle-detail-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
    align-items: start;
}

.vehicle-gallery {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
}

.main-image {
    width: 100%;
    height: 550px;
    object-fit: cover;
}

.thumbnail-list {
    display: flex;
    gap: 10px;
    padding: 15px;
    overflow-x: auto;
}

.thumbnail {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.thumbnail:hover,
.thumbnail.active {
    opacity: 1;
}

.vehicle-info-sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
}

.vehicle-info-sidebar h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

.price-large {
    font-size: 32px;
    font-weight: bold;
    color: var(--success);
    margin-bottom: 25px;
}

.info-list {
    list-style: none;
}

.info-list li {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.info-list li span:first-child {
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 25px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.feature-item::before {
    content: "✓";
    color: var(--success);
}

/* Footer */
footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
}

/* Alert Messages */
.alert {
    padding: 16px 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: rgba(63, 185, 80, 0.15);
    color: var(--success);
    border: 1px solid var(--success);
}

.alert-error {
    background: rgba(248, 81, 73, 0.15);
    color: var(--danger);
    border: 1px solid var(--danger);
}

.alert-warning {
    background: rgba(210, 153, 34, 0.15);
    color: var(--warning);
    border: 1px solid var(--warning);
}

/* Responsive */
@media (max-width: 1024px) {
    .vehicle-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .search-box {
        grid-template-columns: 1fr;
    }
    
    .nav-wrapper {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .vehicle-grid {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.vehicle-card {
    animation: fadeIn 0.5s ease forwards;
}

.vehicle-card:nth-child(1) { animation-delay: 0.1s; }
.vehicle-card:nth-child(2) { animation-delay: 0.2s; }
.vehicle-card:nth-child(3) { animation-delay: 0.3s; }
.vehicle-card:nth-child(4) { animation-delay: 0.4s; }
.vehicle-card:nth-child(5) { animation-delay: 0.5s; }
.vehicle-card:nth-child(6) { animation-delay: 0.6s; }