body {
    font-family: Arial, sans-serif;
    background: #f4f4f4;
    margin: 0;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.card {
    background: white;
    width: 400px;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

h1 {
    margin-top: 0;
}

.subtitle {
    color: #666;
}

label {
    display: block;
    margin-top: 20px;
    margin-bottom: 5px;
}

input {
    box-sizing: border-box;
    width: 100%;
    padding: 12px;
    font-size: 16px;
}

button {
    width: 100%;
    margin-top: 25px;
    padding: 12px;
    font-size: 16px;
    cursor: pointer;
}

.error {
    background: #f8d7da;
    color: #721c24;
    padding: 10px;
    margin-top: 20px;
    border-radius: 5px;
}

.password-requirements ul {
    padding-left: 20px;
}

.password-requirements li {
    margin-bottom: 6px;
}

.password-requirements .valid {
    opacity: 0.75;
}

.password-requirements .invalid {
    opacity: 1;
}

.account-info {
    margin-bottom: 20px;
}