body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #0f1e2d;
    color: #f2f2f2;
    margin: 0;
    padding: 0;
}
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #122b45;
    padding: 1em 2em;
}
nav .logo {
    font-weight: bold;
    font-size: 1.3em;
    color: #ff5555;
}
nav ul {
    list-style: none;
    display: flex;
    gap: 1em;
}
nav ul li a {
    color: #f2f2f2;
    text-decoration: none;
    padding: 0.5em 1em;
    border-radius: 6px;
}
nav ul li a:hover,
nav ul li a.active {
    background-color: #ff4444;
    color: white;
}
main.container {
    max-width: 700px;
    margin: 2em auto;
    background-color: #1a314d;
    padding: 2em;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
}
h1 {
    text-align: center;
    color: #ff4444;
}
label {
    display: block;
    margin-top: 1em;
    font-weight: bold;
}
input, textarea, select {
    width: 100%;
    padding: 0.8em;
    margin-top: 0.3em;
    border: none;
    border-radius: 5px;
    font-size: 1em;
}
button {
    margin-top: 1.5em;
    padding: 1em;
    width: 100%;
    background-color: #ff4444;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
button:hover {
    background-color: #e63b3b;
}
.roles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5em;
    margin-top: 0.5em;
}