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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fa;
    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 0;
    border-radius: 10px;
    margin-bottom: 30px;
    text-align: center;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.controls {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.filter-section {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr auto;
    gap: 15px;
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
}

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

.filter-group input, .filter-group select {
    padding: 10px;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.filter-group input:focus, .filter-group select:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

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

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

.tag-cloud {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.tag-cloud h3 {
    margin-bottom: 15px;
    color: #333;
}

.tag-cloud-item {
    display: inline-block;
    background: #e9ecef;
    padding: 5px 12px;
    margin: 5px;
    border-radius: 20px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s;
}

.tag-cloud-item:hover {
    background: #667eea;
    color: white;
    transform: scale(1.05);
}

.signals-table {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.table-header {
    background: #f8f9fa;
    padding: 20px;
    border-bottom: 1px solid #e1e5e9;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-header h3 {
    color: #333;
}

table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

th, td {
    padding: 12px 8px;
    text-align: left;
    border-bottom: 1px solid #e1e5e9;
    word-wrap: break-word;
    overflow-wrap: break-word;
    vertical-align: top;
}

/* Set specific column widths to prevent overflow */
th:nth-child(1), td:nth-child(1) { /* Signal Name */
    width: 20%;
    min-width: 120px;
}

th:nth-child(2), td:nth-child(2) { /* Protocol Type */
    width: 12%;
    min-width: 100px;
}

th:nth-child(3), td:nth-child(3) { /* Tags */
    width: 20%;
    min-width: 150px;
}

th:nth-child(4), td:nth-child(4) { /* Protocol Address */
    width: 15%;
    min-width: 100px;
}

th:nth-child(5), td:nth-child(5) { /* Database Source */
    width: 18%;
    min-width: 120px;
}

th:nth-child(6), td:nth-child(6) { /* Status */
    width: 8%;
    min-width: 80px;
}

th:nth-child(7), td:nth-child(7) { /* Actions */
    width: 7%;
    min-width: 100px;
}

th {
    background: #f8f9fa;
    font-weight: 600;
    color: #555;
    white-space: nowrap;
}

tr:hover {
    background: #f8f9fa;
}

.tag-badge {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 3px 8px;
    margin: 2px;
    border-radius: 12px;
    font-size: 11px;
}

.status-badge {
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
}

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

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

.btn-edit, .btn-delete {
    padding: 6px 12px;
    margin: 0 2px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

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

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

.btn-edit:hover {
    background: #218838;
}

.btn-delete:hover {
    background: #c82333;
}

.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;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e1e5e9;
}

.modal-header h2 {
    color: #333;
}

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

.close:hover {
    color: #333;
}

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

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

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-help {
    font-size: 12px;
    color: #6c757d;
    margin-top: 5px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 25px;
}

.alert {
    padding: 15px;
    margin: 20px 0;
    border-radius: 6px;
    font-weight: 500;
}

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

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

.empty-state {
    text-align: center;
    padding: 50px 20px;
    color: #6c757d;
}

.empty-state h3 {
    margin-bottom: 10px;
}

@media (max-width: 768px) {
    .filter-section {
        grid-template-columns: 1fr;
    }
    
    .table-header {
        flex-direction: column;
        gap: 15px;
    }
    
    .signals-table {
        overflow-x: auto;
    }
    
    table {
        font-size: 14px;
        min-width: 800px;
    }
    
    th, td {
        padding: 8px 6px;
        font-size: 13px;
    }
    
    /* Adjust column widths for mobile */
    th:nth-child(1), td:nth-child(1) { /* Signal Name */
        width: 22%;
        min-width: 100px;
    }
    
    th:nth-child(2), td:nth-child(2) { /* Protocol Type */
        width: 14%;
        min-width: 80px;
    }
    
    th:nth-child(3), td:nth-child(3) { /* Tags */
        width: 18%;
        min-width: 120px;
    }
    
    th:nth-child(4), td:nth-child(4) { /* Protocol Address */
        width: 16%;
        min-width: 80px;
    }
    
    th:nth-child(5), td:nth-child(5) { /* Database Source */
        width: 16%;
        min-width: 100px;
    }
    
    th:nth-child(6), td:nth-child(6) { /* Status */
        width: 8%;
        min-width: 60px;
    }
    
    th:nth-child(7), td:nth-child(7) { /* Actions */
        width: 6%;
        min-width: 80px;
    }
}