body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #e0f2fe, #f8fafc);
    margin: 0;
    padding: 0;
}

.card {
    width: 90%;
    max-width: 420px;
    margin: 60px auto;
    background: white;
    padding: 30px;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}

h1 {
    text-align: center;
    color: #1e3a8a;
    margin-bottom: 20px;
}

label {
    display: block;
    margin-top: 14px;
    margin-bottom: 6px;
    font-weight: bold;
    color: #334155;
}

input {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    box-sizing: border-box;
}

button {
    width: 100%;
    margin-top: 20px;
    padding: 12px;
    border: none;
    border-radius: 10px;
    background: #2563eb;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

.success {
    background: #dcfce7;
    color: #166534;
    padding: 10px;
    border-radius: 8px;
    text-align: center;
}