body {
    font-family: Arial, sans-serif;
    background: #f5f7f9;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background: #1f2e3d;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

header img {
    height: 50px;
    width: 50px;
    border-radius: 50%;
    margin-right: 1rem;
}

nav a {
    color: #fff;
    margin-left: 1.5rem;
    text-decoration: none;
    font-weight: bold;
}

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

main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 1rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

h1 {
    color: #1f2e3d;
}
h2 {
    color: #2e4e3e;
}
ul {
    margin-left: 1rem;
}

a.button, button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.75rem 1.5rem;
    background-color: #1f2e3d;
    color: #fff;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

a.button:hover, button:hover {
    background-color: #2a3f56;
}

form input, form textarea {
    width: 100%;
    padding: 0.75rem;
    margin: 0.5rem 0 1rem;
    border: 1px solid #ccc;
    border-radius: 4px;
}

footer {
    text-align: center;
    background: #1f2e3d;
    color: white;
    padding: 1rem;
    margin-top: 2rem;
}