.contenedor-autenticacion {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
    padding: 20px;
}

.tarjeta-autenticacion {
    background-color: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 40px 30px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.texto-centro {
    text-align: center;
}

.descripcion-paso {
    font-size: 0.95rem;
    color: #666666;
    line-height: 1.5;
    margin-bottom: 25px;
}

.grupo-formulario {
    margin-bottom: 20px;
    position: relative;
}

.control-input {
    width: 100%;
    padding: 12px;
    border: 1px solid #cccccc;
    border-radius: 6px;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

.control-input:focus {
    border-color: #0d2b45;
    outline: none;
}

.campo-password {
    display: flex;
    align-items: center;
}

.boton-ojo {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 5px;
}

.boton-primario {
    width: 100%;
    padding: 12px;
    background-color: #0d2b45;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
}

.boton-primario:hover {
    background-color: #163e61;
}

.alerta-error {
    background-color: #fde8e8;
    border: 1px solid #f7b7b7;
    color: #e74c3c;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.enlaces-retorno {
    margin-top: 20px;
    text-align: center;
}

.enlaces-retorno a, .enlace-bloque {
    color: #6fa8dc;
    text-decoration: none;
    font-size: 0.9rem;
}

.enlaces-retorno a:hover, .enlace-bloque:hover {
    text-decoration: underline;
}

.enlace-boton {
    display: inline-block;
    text-decoration: none;
    margin-top: 15px;
}

/* Optimización móvil */
@media (max-width: 480px) {
    .tarjeta-autenticacion {
        padding: 25px 20px;
        box-shadow: none;
        border: none;
        background: transparent;
    }
}