body {
    font-family: 'Segoe UI', Tahoma, Geneva, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
}

.container {
    background: white;
    padding: 30px 40px;
    border-radius: 12px;
    width: 320px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    text-align: center;
}

h1 {
    margin-bottom: 20px;
    color: #1e3c72;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 14px;
}

input[type="submit"] {
    width: 100%;
    padding: 10px;
    margin-top: 15px;
    background: #1e3c72;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: 0.3s;
}

input[type="submit"]:hover {
    background: #16325c;
}

a {
    display: block;
    margin-top: 15px;
    text-decoration: none;
    color: #2a5298;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}

.error {
    background: #ffdddd;
    border-left: 5px solid #f44336;
    padding: 10px;
    margin-bottom: 15px;
    text-align: left;
    border-radius: 6px;
}

.success {
    background: #ddffdd;
    border-left: 5px solid #4caf50;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 6px;
}