body {
    font-family: 'Roboto', sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

nav {
    background-color: #003366;
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    font-size: 24px;
    font-weight: bold;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}

nav ul li a:hover {
    text-decoration: underline;
}

.container {
    width: 80%;
    margin: 20px auto;
    background-color: #fff;
    color: #333;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    border-radius: 8px;
}

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

.controls {
    text-align: center;
    margin-bottom: 20px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: #003366;
    color: white;
    cursor: pointer;
}

button:hover {
    background-color: #002244;
}

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

thead {
    background-color: #003366;
    color: white;
}

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

th {
    cursor: pointer;
}

td button {
    margin-right: 5px;
}

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

.edit-button:hover {
    background-color: #218838;
}

.delete-button {
    background-color: #dc3545;
}

.delete-button:hover {
    background-color: #c82333;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0, 0, 0);
    background-color: rgba(0, 0, 0, 0.4);
    padding-top: 60px;
}

.modal-content {
    background-color: #fff;
    margin: 5% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 500px;
    border-radius: 8px;
    color: #333;
}

.close-button {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
}

.close-button:hover,
.close-button:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

label {
    display: block;
    margin-top: 10px;
}

input, textarea, select {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
}

input[type="button"] {
    width: auto;
}