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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

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

header {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

header h1 {
    color: #2c3e50;
    font-size: 2rem;
    font-weight: 600;
}

.actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
    transform: translateY(-1px);
}

.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-weight: 500;
}

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

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

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

.filter-form {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.form-control {
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    min-width: 150px;
}

.form-control:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.table-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    overflow: auto;
    margin-bottom: 20px;
    max-width: 100%;
    max-height: 70vh;
    position: relative;
}

.data-table {
    width: 100%;
    min-width: 800px;
    border-collapse: collapse;
    font-size: 14px;
    position: relative;
}

.data-table th {
    background-color: #e8eff7;
    padding: 15px 12px;
    text-align: left;
    font-weight: 600;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
    border-right: 1px solid #dee2e6;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.data-table th:last-child {
    border-right: none;
}

.data-table td {
    padding: 12px;
    border-bottom: 1px solid #dee2e6;
    border-right: 1px solid #dee2e6;
    vertical-align: top;
    word-wrap: break-word;
    max-width: 250px;
}

.data-table td:last-child {
    border-right: none;
}

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

.data-table tbody tr:nth-child(even) {
    background-color: #fafafa;
}

.data-table tbody tr:nth-child(even):hover {
    background-color: #f0f0f0;
}

.sort-link {
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.sort-link:hover {
    color: #3498db;
}

.sort-arrow {
    font-weight: bold;
    color: #3498db;
    margin-left: 5px;
}

.no-data {
    text-align: center;
    color: #6c757d;
    font-style: italic;
    padding: 40px;
}

.info {
    background: white;
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header {
        flex-direction: column;
        text-align: center;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .filter-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-control {
        min-width: auto;
    }
    
    .table-container {
        max-height: 60vh;
    }
    
    .data-table {
        font-size: 12px;
    }
    
    .data-table th,
    .data-table td {
        padding: 8px 6px;
    }
    
    .info {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .table-container {
        margin: 0 -10px 20px -10px;
        border-radius: 0;
    }
}