body {
    background: #f5f6fa;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
}
.container {
    max-width: auto;
    margin: 60px auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    padding: 32px 28px 24px 28px;
}
h2 {
    text-align: center;
    margin-bottom: 24px;
    color: #333;
}
label {
    display: block;
    margin-bottom: 6px;
    color: #555;
    font-size: 15px;
}
input {
    width: 100%;
    padding: 10px;
    margin-bottom: 18px;
    border: 1px solid #dcdde1;
    border-radius: 5px;
    font-size: 15px;
    background: #f9f9f9;
}
button[type="submit"] {
    width: 100%;
    padding: 10px;
    background: #4078c0;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.2s;
}
button[type="submit"]:hover {
    background: #305a8c;
}
.alert {
    background: #ffe5e5;
    color: #c0392b;
    border-radius: 5px;
    padding: 10px 15px;
    margin-bottom: 18px;
    font-size: 14px;
}