body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f5f6fa;
}
header {
    background: #0d1b2a;
    padding: 15px;
}
nav {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}
nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}
.container {
    max-width: 1100px;
    margin: auto;
    padding: 20px;
}
.card {
    background: #fff;
    padding: 20px;
    border-radius: 6px;
    box-shadow: 0 2px 6px rgba(0,0,0,.1);
}
footer {
    background: #0d1b2a;
    color: #fff;
    text-align: center;
    padding: 15px;
    margin-top: 40px;
}
input, button {
    padding: 10px;
    width: 100%;
    margin-bottom: 10px;
}
button {
    background: #0d1b2a;
    color: #fff;
    border: none;
    cursor: pointer;
}
button:hover {
    background: #1b263b;
}