* {
    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;
    line-height: 1.6;
}

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

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    margin-bottom: 10px;
}

.header-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

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

.chunk-card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.chunk-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.chunk-card h2 {
    color: #667eea;
    margin-bottom: 10px;
}

.chunk-card p {
    color: #666;
    margin-bottom: 5px;
}

.data-selector {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 15px;
}

.data-selector label {
    font-weight: 600;
}

.data-selector select {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.counter {
    color: #666;
    font-size: 14px;
}

.data-editor {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.field-group {
    margin-bottom: 25px;
}

.field-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

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

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

.form-control[readonly] {
    background-color: #f5f5f5;
    cursor: not-allowed;
}

.table-container {
    overflow-x: auto;
    margin-bottom: 15px;
}

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

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

.data-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #333;
}

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

.data-table td {
    vertical-align: top;
}

.data-table .cell-content {
    max-width: 300px;
    word-wrap: break-word;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

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

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

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

.btn-add {
    background-color: #28a745;
    color: white;
    margin-top: 10px;
}

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

.btn-danger {
    background-color: #dc3545;
    color: white;
    padding: 5px 10px;
    font-size: 12px;
}

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

.btn-edit {
    background-color: #ffc107;
    color: #333;
    padding: 5px 10px;
    font-size: 12px;
    margin-right: 5px;
}

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

.action-buttons {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #000;
}

.modal-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

footer {
    text-align: center;
    padding: 20px;
    color: #666;
    margin-top: 30px;
}