body {
    font-family: Tahoma, sans-serif;
    background: #f0f4f8;
    margin: 0;
    color: #333;
}
.login-container, .dashboard-container {
    max-width: 400px;
    margin: 30px auto;
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
.login-container h2, .dashboard-container h2 {
    text-align: center;
    color: #004aad;
}
input, select {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border-radius: 5px;
    border: 1px solid #ccc;
}
button {
    width: 100%;
    padding: 10px;
    background: #004aad;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
button:hover { background: #00337a; }
.error { color: red; text-align: center; }