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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

/* Навигация */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.nav-brand h1 {
    font-size: 1.5rem;
    margin: 0;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.nav-menu a:hover {
    background-color: rgba(255,255,255,0.2);
}

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

.btn-logout {
    background-color: rgba(255,255,255,0.2);
    padding: 8px 15px;
    border-radius: 5px;
    text-decoration: none;
    color: white;
    transition: background-color 0.3s;
}

.btn-logout:hover {
    background-color: rgba(255,255,255,0.3);
}

/* Основной контент */
.main-content {
    min-height: calc(100vh - 150px);
    padding: 20px 0;
}

/* Карточки */
.card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.card-title {
    font-size: 1.5rem;
    color: #333;
}

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

.btn-primary {
    background-color: #667eea;
    color: white;
}

.btn-primary:hover {
    background-color: #5568d3;
}

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

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

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

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

.btn-warning {
    background-color: #ffc107;
    color: #333;
}

.btn-warning:hover {
    background-color: #e0a800;
}

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

.btn-secondary:hover {
    background-color: #5a6268;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #555;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

select.form-control {
    cursor: pointer;
}

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

/* Таблицы */
.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 5px;
    overflow: hidden;
}

.table thead {
    background-color: #667eea;
    color: white;
}

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

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

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Алерты */
.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

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

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

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

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

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-left: 4px solid #667eea;
}

.stat-card h3 {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 10px;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: #333;
}

/* Поиск и фильтры */
.search-filter {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-filter input,
.search-filter select {
    flex: 1;
    min-width: 200px;
}

/* Пагинация */
.pagination {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-top: 20px;
}

.pagination a,
.pagination span {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-decoration: none;
    color: #333;
}

.pagination a:hover {
    background-color: #667eea;
    color: white;
    border-color: #667eea;
}

.pagination .active {
    background-color: #667eea;
    color: white;
    border-color: #667eea;
}

/* Футер */
.footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

/* Адаптивность */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .table {
        font-size: 0.9rem;
    }
    
    .table th,
    .table td {
        padding: 8px;
    }
}