body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1 {
    color: #333;
    text-align: center;
    margin-bottom: 30px;
}

p {
    color: #666;
    margin-bottom: 15px;
}

.dropdown-wrapper {
    margin-bottom: 15px;
}

.service-dropdown {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    background-color: white;
    cursor: pointer;
}

.service-dropdown:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0,123,255,0.25);
}

.service-dropdown option {
    padding: 8px;
}

.button-container {
    margin: 20px 0;
    text-align: center;
}

#clear-button {
    background-color: #dc3545;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#clear-button:hover {
    background-color: #c82333;
}

#combinations-container {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}

#combinations-list {
    margin-top: 15px;
}

.combination-item {
    background-color: #f8f9fa;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 4px;
    border-left: 4px solid #007bff;
}

.selected-sims {
    margin-bottom: 30px;
}

.table-container {
    margin-top: 20px;
}

.combinations-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    font-size: 14px;
}

.combinations-table th,
.combinations-table td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}

.combinations-table th {
    background-color: #f8f9fa;
    font-weight: bold;
    color: #333;
}

.combinations-table tr:nth-child(even) {
    background-color: #f9f9f9;
}

.combinations-table tr:hover {
    background-color: #f0f0f0;
}

.total-price {
    font-weight: bold;
    color: #007bff;
    background-color: #e7f3ff;
}

.total-data {
    font-weight: bold;
    color: #28a745;
    background-color: #e7f7e7;
}

.sortable-header {
    cursor: pointer;
    user-select: none;
    position: relative;
}

.sortable-header:hover {
    background-color: #e9ecef;
}

.sort-icon {
    margin-left: 5px;
    font-size: 12px;
    color: #6c757d;
}

h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 18px;
}