body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f2f2f2;
}

.sidebar {
    width: 250px;
    background-color: #333;
    position: fixed;
    height: 100%;
    padding-top: 20px;
    color: white;
    box-shadow: 2px 0 5px rgba(0,0,0,0.1);
}

.sidebar h2 {
    text-align: center;
    color: white;
    margin-bottom: 20px;
}

.sidebar ul {
    list-style-type: none;
    padding: 0;
}

.sidebar ul li {
    padding: 10px;
    text-align: left;
    margin-bottom: 10px;
    background-color: #444;
    border-radius: 5px;
}

.sidebar ul li a {
    color: white;
    text-decoration: none;
    display: block;
    padding: 10px;
    transition: background-color 0.3s;
}

.sidebar ul li a:hover {
    background-color: #575757;
}

.submenu {
    display: none;
    list-style-type: none;
    padding-left: 20px;
}

.submenu li {
    background-color: #555;
    margin-bottom: 5px;
}

.submenu li a {
    padding: 10px;
    background-color: #555;
    border-radius: 5px;
}

.submenu li a:hover {
    background-color: #666;
}

.content {
    margin-left: 250px;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: auto;
    background-color: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #45a049;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table, th, td {
    border: 1px solid #ddd;
    padding: 8px;
}

th {
    background-color: #f4f4f4;
    text-align: left;
}

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

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
}

.form-group input, 
.form-group select, 
.form-group textarea {
    width: calc(100% - 22px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
}

.tabs {
    margin-top: 20px;
}

.tab-button {
    background-color: #ddd;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    display: inline-block;
    margin-right: 5px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.tab-button:hover {
    background-color: #ccc;
}

.tab-content {
    display: none;
    margin-top: 20px;
}

textarea {
    width: calc(100% - 22px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
    margin-bottom: 10px;
}

.client-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.client-info {
    background-color: #f9f9f9;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}

.search-bar {
    margin-bottom: 20px;
}

#search {
    width: 300px;
    padding: 8px;
    font-size: 1em;
}

#search-button {
    padding: 8px 12px;
    font-size: 1em;
    cursor: pointer;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

#search-button:hover {
    background-color: #0056b3;
}