body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    direction: rtl;
    padding: 20px;
    background-color: #f4f4f4;
}

h1 {
    text-align: center;
    color: #333;
}

#searchInput {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
}

#contactsTable {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
    box-shadow: 0 2px 3px rgba(0,0,0,0.1);
}

th, td {
    padding: 12px;
    text-align: right;
    border-bottom: 1px solid #ddd;
}

thead th {
    background-color: #007bff;
    color: white;
    cursor: pointer;
    user-select: none; /* جلوگیری از انتخاب متن هنگام کلیک */
}

thead th:hover {
    background-color: #0056b3;
}

tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

tbody tr:hover {
    background-color: #f1f1f1;
}