body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: #fff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

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

.search-form {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
}

.search-form input[type="text"] {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.search-form button, .add-btn, .back-btn, .cancel-btn {
    padding: 8px 15px;
    background: #5cb85c;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
}

.add-btn {
    background: #337ab7;
}

.back-btn, .cancel-btn {
    background: #f0ad4e;
}

.search-form button:hover, .add-btn:hover, .back-btn:hover, .cancel-btn:hover {
    opacity: 0.9;
}

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

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

th, td {
    padding: 12px;
    text-align: left;
}

th {
    background-color: #f8f8f8;
}

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

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

a {
    color: #337ab7;
    text-decoration: none;
    margin-right: 10px;
}

a:hover {
    text-decoration: underline;
}

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

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

.form-group input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

button[type="submit"] {
    background: #5cb85c;
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button[type="submit"]:hover {
    background: #4cae4c;
}