main.container {
    display: flex;
    justify-content: center;
    padding: 3rem 1rem;
}

.card {
    width: 100%;
    max-width: 820px; 
    padding: 2.5rem 3rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: .8rem;
    box-shadow: 0px 5px 18px rgba(0,0,0,0.08);
}

.card h2 {
    margin-top: 0;
    font-size: 1.9rem;
}

.card > p {
    margin-bottom: 1.5rem;
    color: var(--muted);
    font-size: 1.05rem;
}

form {
    display: grid;
    grid-template-columns: 1fr 1fr; 
    gap: 1.5rem 2rem;
}

fieldset {
    grid-column: 1 / -1;
    border: 1px solid var(--border);
    border-radius: .6rem;
    padding: 1.5rem 1.8rem;
}

legend {
    padding: 0 .5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

label {
    display: block;
    margin-bottom: .35rem;
    font-weight: 500;
}

input[type="email"],
input[type="password"],
input[type="text"],
input[type="tel"],
input[type="date"] {
    width: 100%;
    padding: .75rem .8rem;
    border: 1px solid var(--border);
    border-radius: .5rem;
    background: var(--card);
    color: var(--text);
    font-size: 1rem;
    transition: border-color .2s, background .2s;
}

input:hover {
    border-color: var(--primary);
}

input:focus {
    outline: 3px solid #5aa9ff;
    outline-offset: 2px;
}

button[type="submit"] {
    grid-column: 1 / -1;
    background: var(--primary);
    color: var(--primary-contrast);
    border: none;
    border-radius: .5rem;
    padding: 1rem 1rem;
    font-size: 1.15rem;
    cursor: pointer;
    margin-top: .5rem;
    transition: opacity .2s;
}

button:hover {
    opacity: .9;
}

.card a {
    color: var(--primary);
    text-decoration: none;
}

.card a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    form {
        grid-template-columns: 1fr;
    }
}