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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

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

/* Navigation */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.navbar-menu {
    display: flex;
    gap: 20px;
    list-style: none;
}

.navbar-menu a {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    background-color: #34495e;
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

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

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #2c3e50;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.stat-label {
    color: #7f8c8d;
    font-size: 14px;
    margin-bottom: 8px;
}

.stat-value {
    font-size: 32px;
    font-weight: bold;
    color: #2c3e50;
}

/* Table */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

thead {
    background-color: #ecf0f1;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    font-weight: 600;
    color: #2c3e50;
}

tr:hover {
    background-color: #f8f9fa;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2c3e50;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
}

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

.login-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-title {
    text-align: center;
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 30px;
    color: #2c3e50;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.pagination button {
    padding: 8px 16px;
    border: 1px solid #ddd;
    background: white;
    border-radius: 4px;
    cursor: pointer;
}

.pagination button:hover:not(:disabled) {
    background-color: #3498db;
    color: white;
    border-color: #3498db;
}

.pagination button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

/* Charts */
.chart-container {
    position: relative;
    height: 400px;
    margin-top: 20px;
}

/* Filters */
.filters {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.filter-item label {
    font-size: 14px;
    color: #7f8c8d;
}

.filter-item input,
.filter-item select {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

/* Status badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background-color: #d4edda;
    color: #155724;
}

.badge-warning {
    background-color: #fff3cd;
    color: #856404;
}

.badge-danger {
    background-color: #f8d7da;
    color: #721c24;
}

/* Group badges */
.badge-group {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.badge-group-default {
    background-color: #e9ecef;
    color: #495057;
}

.badge-group-vip {
    background-color: #fff3cd;
    color: #856404;
}

.badge-group-svip {
    background-color: #ffeaa7;
    color: #d68910;
}

.badge-group-premium {
    background-color: #e8daef;
    color: #6c3483;
}

.badge-group-pro {
    background-color: #d4edda;
    color: #155724;
}

.badge-group-enterprise {
    background-color: #cce5ff;
    color: #004085;
}

.badge-group-test {
    background-color: #f5f5f5;
    color: #6c757d;
}

.badge-group-free {
    background-color: #e2e3e5;
    color: #383d41;
}

.badge-group-basic {
    background-color: #d1ecf1;
    color: #0c5460;
}

.badge-group-plus {
    background-color: #d4edda;
    color: #155724;
}

.badge-group-max {
    background-color: #ff6b6b;
    color: #ffffff;
}

/* Loading */
.loading {
    text-align: center;
    padding: 40px;
    color: #7f8c8d;
}

/* Error message */
.error-message {
    background-color: #f8d7da;
    color: #721c24;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
}

/* Success message */
.success-message {
    background-color: #d4edda;
    color: #155724;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .filters {
        flex-direction: column;
    }
}