.auth-form {
    max-width: 28rem;
    margin: 2rem auto;
    padding: 0 1rem;
}

.auth-form h1 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.campo {
    margin-bottom: 1rem;
}

.campo label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 600;
    font-size: 0.95rem;
}

.campo input {
    width: 100%;
    padding: 0.7rem;
    border: 2px solid var(--bordes);
    border-radius: 6px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    background: white;
}

.campo input:focus {
    outline: none;
    border-color: var(--primary);
}

.campo input.invalido {
    border-color: #e74c3c;
}

.campo input.valido {
    border-color: #27ae60;
}

.msg-error {
    display: block;
    color: #e74c3c;
    font-size: 0.8rem;
    min-height: 1.2rem;
    margin-top: 0.2rem;
}

.error {
    background: #fde8e8;
    color: #e74c3c;
    padding: 0.8rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    text-align: center;
    font-size: 0.9rem;
}

.exito {
    background: #e8f5e9;
    color: #2e7d32;
    padding: 0.8rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    text-align: center;
    font-size: 0.9rem;
}

.auth-form button {
    width: 100%;
    padding: 0.8rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    cursor: pointer;
    margin-top: 0.5rem;
}

.auth-form button:hover {
    opacity: 0.9;
}

.alt-link {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.alt-link a {
    color: var(--primary);
    font-weight: 600;
}

@media (min-width: 768px) {
    .auth-form {
        margin-top: 3rem;
        margin-bottom: 3rem;
        padding: 2rem;
        border: 2px solid var(--bordes);
        border-radius: 8px;
    }
}