:root {
    --red: hsl(0, 100%, 74%);
    --green: hsl(154, 59%, 51%);
    --blue: hsl(248, 32%, 49%);
    --darkBlue: hsl(249, 10%, 26%);
    --grayishBlue: hsl(246, 25%, 77%);
}

html {
    box-sizing: border-box;
    font-size: 62.5%;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

body {
    font-size: 1.6rem;
    font-family: 'Poppins', sans-serif;
    background-color: var(--red);
}

h1,
h2,
h3,
h4,
p {
    margin: 0;
}

.contenedor {
    max-width: 120rem;
    width: 95%;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .contenedor {
        padding: 20rem 0;
    }
}

.bg {
    background-image: url(../images/bg-intro-mobile.png);
    height: 100vh;
    background-size: cover;
    background-position: center;
}

@media (min-width: 768px) {
    .bg {
        background-image: url(../images/bg-intro-desktop.png);
    }
}

@media (min-width: 768px) {

    .flex {
        display: flex;
        align-items: center;
        gap: 5rem;
    }
}

.header {
    text-align: center;
    padding-top: 10rem;
}

@media (min-width: 768px) {
    .header {
        flex: 2;
    }
}

.header__title,
.header__text {
    color: #FFFFFF;
}

.header__title {
    font-size: 3.5rem;
    padding-bottom: 3rem;
    font-weight: 700;
}

@media (min-width: 768px) {
    .header__title {
        font-size: 5rem;
        text-align: left;
    }
}

.header__text {
    line-height: 1.8;
}

@media (min-width: 768px) {
    .header__text {
        text-align: left;
    }
}

/** main content **/

.contenido {
    padding-top: 7rem;
    padding-bottom: 5rem;
}

.heading {
    background-color: var(--blue);
    padding: 2.5rem 6rem;
    border-radius: 1rem;
    box-shadow: 0px 8px rgba(0, 0, 0, 0.193);
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .heading {
        margin-bottom: 3rem;
    }
}

.heading__text {
    color: var(--grayishBlue);
    font-weight: 400;
    text-align: center;
}

.heading__text span {
    font-weight: 600;
    color: #FFFFFF;
    text-align: center;
}

/** Formulario **/

@media (min-width: 768px) {
    .contenido {
        flex: 3;
    }
}

.form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    background-color: #FFFFFF;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0px 8px rgba(0, 0, 0, 0.193);
}

@media (min-width: 768px) {
    .form {
        padding: 4rem 3rem;
    }
}

.campo__contenido {
    position: relative;
}

.campo__input {
    width: 100%;
    padding: 2rem 3rem;
    border-radius: .5rem;
    border: 1px solid var(--grayishBlue);
    font-weight: 600;
    color: var(--darkBlue);
}

.campo__input::placeholder {
    font-weight: 700;
    color: var(--darkBlue);
}

.campo__img {
    position: absolute;
    top: 2rem;
    bottom: 2rem;
    right: 2rem;
}

.form__btn {
    color: #FFFFFF;
    background-color: var(--green);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 1.5rem;
    border: 0;
    border-radius: .5rem;
    box-shadow: 0px 3px hsl(154, 54%, 41%);
    padding: 2rem 5rem;
    cursor: pointer;
    transition-property: background-color;
    transition-duration: 300ms;
}

.form__btn:hover {
    background-color: hsl(154, 63%, 54%);
}

.form__footer {
    text-align: center;
    font-size: 1rem;
    color: var(--grayishBlue);
    font-weight: 500;
    line-height: 2;
}

@media (min-width: 768px) {
    .form__footer {
        font-size: 1.5rem;
    }
}

.form__footer span {
    color: var(--red);
    font-weight: 700;
}

.error {
    text-align: end;
    font-size: 1.3rem;
    padding-top: 0.5rem;
    color: var(--red);
}

.error-input {
    border: 3px solid var(--red);
    color: var(--red);
}