:root {
    --primary-color: #28a745;
    --secondary-color: #6c757d;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-bg: #f8f9fa;
    --dark-text: #212529;
}

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

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

/* Admin Sidebar */
.admin-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 250px;
    background: linear-gradient(180deg, #2c3e50 0%, #34495e 100%);
    padding: 20px 0;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.admin-sidebar .brand {
    color: white;
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    padding: 15px;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.admin-sidebar .nav-item {
    list-style: none;
}

.admin-sidebar .nav-link {
    display: flex;
    align-items: center;
    padding: 15px 25px;
    color: #ecf0f1;
    text-decoration: none;
    transition: all 0.3s ease;
}

.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
    background-color: rgba(255,255,255,0.1);
    border-left: 4px solid var(--primary-color);
    padding-left: 21px;
}

.admin-sidebar .nav-link i {
    margin-right: 12px;
    font-size: 18px;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    padding: 20px;
    min-height: 100vh;
}

/* Dashboard Cards */
.stat-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.stat-card .stat-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.stat-card h3 {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-card p {
    color: #6c757d;
    font-size: 14px;
    margin: 0;
}

/* Tables */
.custom-table {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.custom-table table {
    width: 100%;
    margin: 0;
}

.custom-table thead {
    background: linear-gradient(135deg, var(--primary-color), #218838);
    color: white;
}

.custom-table thead th {
    padding: 15px;
    font-weight: 600;
    text-align: left;
}

.custom-table tbody td {
    padding: 15px;
    border-bottom: 1px solid #dee2e6;
}

.custom-table tbody tr:hover {
    background-color: #f8f9fa;
}

/* Badges */
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background-color: #28a745;
    color: white;
}

.badge-warning {
    background-color: #ffc107;
    color: #212529;
}

.badge-danger {
    background-color: #dc3545;
    color: white;
}

.badge-info {
    background-color: #17a2b8;
    color: white;
}

.badge-secondary {
    background-color: #6c757d;
    color: white;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background-color: #218838;
    color: white;
}

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

.btn-danger:hover {
    background-color: #c82333;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #495057;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ced4da;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

/* Customer Portal */
.customer-header {
    background: linear-gradient(135deg, var(--primary-color), #218838);
    color: white;
    padding: 15px 30px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

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

.customer-header .brand {
    font-size: 24px;
    font-weight: bold;
}

.customer-header .nav-menu {
    display: flex;
    list-style: none;
    gap: 25px;
}

.customer-header .nav-menu a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.customer-header .nav-menu a:hover {
    opacity: 0.8;
}

/* Login & Register */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-card {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 450px;
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
}

.auth-card .logo {
    text-align: center;
    margin-bottom: 20px;
}

.auth-card .logo i {
    font-size: 60px;
    color: var(--primary-color);
}

/* Alert Messages */
.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-size: 14px;
}

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

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

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Responsive */
@media (max-width: 768px) {
    .admin-sidebar {
        width: 200px;
    }
    
    .main-content {
        margin-left: 200px;
    }
}

@media (max-width: 576px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stat-card {
        margin-bottom: 15px;
    }
}

/* Subscription Card */
.subscription-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
    border-left: 5px solid var(--primary-color);
}

.subscription-card h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.subscription-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 15px;
}

.detail-item {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 12px;
    color: #6c757d;
    margin-bottom: 5px;
}

.detail-value {
    font-size: 16px;
    font-weight: 600;
    color: #212529;
}