:root {
    --primary: #FF6B35;
    --primary-dark: #e55a2b;
    --secondary: #1A1A2E;
    --background: #f8f9fa;
    --white: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --border: #e1e5e9;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
}

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

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

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

/* Navbar */
.navbar {
    background: var(--secondary);
    color: var(--white);
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand a {
    color: var(--white);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.navbar-brand i {
    color: var(--primary);
    margin-right: 10px;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-link {
    color: var(--white);
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    transition: background 0.3s;
}

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

.nav-link i {
    margin-right: 5px;
}

.nav-link.btn-primary {
    background: var(--primary);
    color: var(--white);
}

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

.nav-dropdown {
    position: relative;
}

.nav-dropdown-btn {
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    padding: 8px 15px;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-radius: 5px;
    z-index: 1001;
}

.nav-dropdown:hover .nav-dropdown-content {
    display: block;
}

.nav-dropdown-content a {
    color: var(--text);
    padding: 12px 20px;
    text-decoration: none;
    display: block;
    transition: background 0.3s;
}

.nav-dropdown-content a:hover {
    background: var(--background);
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
    padding: 40px 0;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

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

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
}

.auth-box {
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 40px;
    width: 100%;
    max-width: 450px;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header i {
    color: var(--primary);
    margin-bottom: 15px;
}

.auth-header h1 {
    font-size: 2rem;
    color: var(--secondary);
    margin-bottom: 5px;
}

.auth-header p {
    color: var(--text-light);
}

.auth-form .form-group {
    margin-bottom: 20px;
}

.auth-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.auth-form label i {
    margin-right: 8px;
    color: var(--primary);
}

.auth-form input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.auth-form input:focus {
    outline: none;
    border-color: var(--primary);
}

.btn {
    display: inline-block;
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255,107,53,0.3);
}

.btn-block {
    width: 100%;
}

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

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

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

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

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

.auth-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.feature-item {
    text-align: center;
}

.feature-item i {
    display: block;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 5px;
}

.feature-item span {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Vehicles Grid */
.vehicles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.vehicle-card {
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    padding: 25px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.vehicle-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

.vehicle-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.vehicle-icon {
    width: 50px;
    height: 50px;
    background: rgba(255,107,53,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.vehicle-icon i {
    font-size: 1.5rem;
    color: var(--primary);
}

.vehicle-info h3 {
    font-size: 1.1rem;
    margin-bottom: 2px;
}

.vehicle-plate {
    color: var(--text-light);
    font-size: 0.875rem;
}

.vehicle-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    padding: 15px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 15px;
}

.stat-item {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
    margin-bottom: 2px;
}

.stat-value {
    display: block;
    font-weight: 600;
    color: var(--secondary);
}

.vehicle-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

.page-header h1 {
    font-size: 2rem;
    color: var(--secondary);
}

.page-header h1 i {
    color: var(--primary);
    margin-right: 10px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--white);
    border-radius: 10px;
}

.empty-state i {
    color: var(--border);
    margin-bottom: 20px;
}

.empty-state h2 {
    color: var(--secondary);
    margin-bottom: 10px;
}

.empty-state p {
    color: var(--text-light);
    margin-bottom: 20px;
}

/* Footer */
.footer {
    background: var(--secondary);
    color: var(--white);
    padding: 20px 0;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar-menu {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .vehicles-grid {
        grid-template-columns: 1fr;
    }
    
    .auth-features {
        grid-template-columns: 1fr;
    }
    
    .vehicle-stats {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    
    .page-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}