body {
    background-color: #f8f9fa;
}

.contenedor {
    min-height: 100vh;
    display: flex;
    flex-direction: column;

    width: 95%;
    max-width: 1200px;
}

main {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

/* Estilo del botón volver (arriba a la izquierda) */
.nav-top {
    margin-top: 2rem;
    padding: 1rem 2rem;
}

.btn-back {
    font-size: 1.4rem;
    color: #495057;
    text-decoration: none;
    border: 1px solid #ced4da;
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    background-color: #fff;
    transition: background-color 0.2s;
}

.btn-back:hover {
    background-color: #e9ecef;
}

/* Tarjeta de Login (Contenedor con borde gris) */
.login {
    background-color: #ffffff;
    width: 100%;
    max-width: 45rem;
    padding: 3rem;
    border: 1px solid #dee2e6;
    border-radius: 0.8rem;
    box-shadow: 0 0.2rem 0.5rem rgba(0, 0, 0, 0.05);
}

/* Título con el estilo de la línea azul */
.login_title {
    font-size: 1.6rem;
    line-height: 4.6rem;
    color: #007bff; /* El azul de tu panel */
    font-weight: 700;
    margin-bottom: 2.5rem;
    text-align: center;
    gap: 1rem;
}

/* Formulario y campos */
.login_form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.formulario_field {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.formulario_field label {
    font-size: 1.4rem;
    font-weight: 700;
    color: #212529;
}

.formulario_field input {
    font-size: 1.4rem;
    padding: 1rem 1.2rem;
    border: 1px solid #ced4da;
    border-radius: 0.4rem;
    color: #495057;
    outline: none;
}

.formulario_field input::placeholder {
    color: #adb5bd;
}

.formulario_field input:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Botón principal (Ajustado al estilo del panel) */
.formulario_btn {
    margin-top: 1rem;
    padding: 1.2rem;
    background-color: #343a40; /* Gris oscuro industrial */
    color: #ffffff;
    border: none;
    border-radius: 0.4rem;
    font-size: 1.4rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    transition: background-color 0.2s;
}

.formulario_btn:hover {
    background-color: #23272b;
}

.formulario_btn svg {
    width: 1.6rem;
    height: 1.6rem;
}

.alerta {
    padding: .85rem;
    font-size: .98rem;
    margin: 1rem 0;
    color: #efefef;
    text-align: center;
    text-transform: uppercase;
    margin-bottom: 2rem;
    font-weight: bold;
}

.alerta.error {
    background-color: rgb(166, 7, 7);
}