styles.css

:root {
    --heebo: 'Heebo', sans-serif;
    --poppins: 'Poppins', sans-serif;
    --montserrat: 'Montserrat', sans-serif;
    --blue: #2D9CDB;
    --btn-gray: #E0E0E0;
    --footer-purple: #100E1D;
    --gray-1: #333333;
    --gray-2: #4F4F4F;
    --gray-3: #828282;
    --gray-4: #BDBDBD;
    --gray-6: #F2F2F2;
    --green: #27AE60;
    --terracota: #EB5757;
    --white: #FFFFFF;
}

html {
    scroll-behavior: smooth;
}

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

body {
    margin: 5.5rem 0 0;
    padding: 0;
}

/* FUENTES | FONTS */
.companyname {
    font-family: var(--heebo);
    font-weight: 800;
}

.section__portfolio__typesvc {
    font-family: var(--poppins);
    font-weight: 300;
}

.section__hero__pgph, .section__services__pgph,
.section__team__pgph, .footer__link {
    font-family: var(--poppins);
    font-weight: 400;
}

.nav__links, .section__hero__subtitle, .title, .form__label, .form__input,
.form__btn, .section__services__btn,
.section__portfolio__desc, .section__portfolio__btn,
.section__team__subtitle, .section__quote__blockcont,
.figure__quote, .figure__attribution {
    font-family: var(--poppins);
    font-weight: 500;
}

.section__services__subtitle {
    font-family: var(--poppins);
    font-weight: 700;
}

.footer__page__author {
    font-family: var(--montserrat);
    font-weight: 500;
}

.page__author__link {
    font-family: var(--montserrat);
    font-weight: 700;
}

.footer__company {
    font-style: normal;
}

/* COLORES DE TEXTO | TEXT COLORS */
.section__hero__subtitle, .section__portfolio__btn {
    color: var(--blue);
}

.header__companyname, .nav__links, .title,
.section__services__subtitle, .section__portfolio__desc,
.attribution__name {
    color: var(--gray-1);
}

.section__hero__pgph, .section__services__pgph,
.section__team__pgph {
    color: var(--gray-2);
}

.form__label, .section__services__btn,
.section__portfolio__typesvc, .attribution__cite {
    color: var(--gray-3);
}

.form__input::placeholder {
    color: var(--gray-4);
}

.form__btn, .footer__companyname, .footer__page__author {
    color: var(--gray-6);
}

.section__team__subtitle {
    color: var(--terracota);
}

.footer__link {
    color: var(--white);
}

/* ENCABEZADO | HEADER */
.header {
    padding: .725rem 1rem 0 .65rem;
    position: fixed;
    z-index: 110;
    width: 100%;
    top: 0;
    background-color: var(--white);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__companyname {
    margin: 0;
    font-size: 1.5rem;
}

.nav__toggle {
    cursor: pointer;
    height: 1.5625rem;
    width: 1.5625rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    -ms-flex-direction: column;
    align-items: center;
    justify-content: space-evenly;
}

.nav__toggle__line {
    background-color: #000;
    height: 0.15625rem;
    width: 95%;

    transition: all .45s;
}

.nav__toggle .nav__toggle__line--1,
.nav__toggle .nav__toggle__line--3 {
    transition-delay: 0s;
}

.nav__toggle .nav__toggle__line--2 {
    transition-delay: .2s;
}

.nav__toggle.toggle--active .nav__toggle__line {
    background-color: var(--blue);
}

.nav__toggle.toggle--active .nav__toggle__line--1 {
    transform: translateY(.45rem) rotate(45deg);
    transition-delay: .2s;
}

.nav__toggle.toggle--active .nav__toggle__line--2 {
    transform: translateX(110%);
    transition-delay: 0s;
}

.nav__toggle.toggle--active .nav__toggle__line--3 {
    transform: translateY(-.45rem) rotate(-45deg);
    transition-delay: .2s;
}

.nav {
    overflow: hidden;
    position: absolute;
    left: 0;
    top: 100%;
    width: 100%;
    height: 0;
    font-size: 1.03125rem;

    transition: all .8s;
}

.nav__list {
    background-color: var(--white);
    list-style: none;
    margin: 0;
    padding: .25rem 0 0;
    width: 100%;
}

.nav__items {
    padding: .25rem 0 .25rem .65rem;
}

.nav__items:last-child {
    border-bottom: .1875rem solid var(--blue);
}

.nav__links, .footer__link {
    text-decoration: none;
    transition: all .3s;
}

.nav__links:hover {
    padding-left: .35rem;
}

.nav__links:focus, .footer__link:focus {
    color: var(--blue);
}

/* HERO */
.section {
    padding: 0 .4rem;
    max-width: 83.25rem;
    margin-left: auto;
    margin-right: auto;
}

.title {
    margin-left: 6.5vw;
}

.section__hero {
    margin-top: 2.75rem;
}

.section__hero__heading {
    margin-bottom: 1.46875rem;
}

.section__hero__subtitle {
    margin: 0;
    padding-left: 6.5vw;
    font-size: .8rem;
}

.section__hero__title {
    margin: 0 0 1.125rem;
    font-size: 1.5rem;
}

.hero__title--1 {
    padding-left: 6.5vw;
}

.section__hero__img {
    width: 100%;
    border-radius: .75rem;
}

.section__hero__article {
    width: 75%;
    max-width: 15.625rem;
    margin-left: 6.5vw;
}

.section__hero__pgph {
    font-size: .75rem;
}

.section__hero__form {
    margin-top: 1.25rem;
}

.form__label {
    cursor: pointer;
    display: inline-block;
    font-size: .625rem;
    margin-bottom: .21875rem;
}

.form__field {
    background-color: var(--gray-6);
    cursor: text;
    padding: .225rem .1875rem;
    margin: 0;
    border-radius: .75rem;
    display: grid;
    grid-template-columns: 73% 27%;
    grid-template-rows: 1fr;
}

.form__input {
    font-size: .875rem;
    padding: .3rem .3rem .3rem .7rem;
    background-color: transparent;
    border: none;
    outline: none;

    transition: all .4s;
}

.form__input:valid {
    color: #33AF33;
}

.form__input:invalid:not(:placeholder-shown) {
    color: #DA3434;
}

.form__btn {
    font-size: .875rem;
    cursor: pointer;
    background-color: var(--blue);
    border: none;
    outline: none;
    border-radius: .75rem;
    font-weight: lighter;
    padding: .4375rem 0;
}

.form__btn:active {
    background-color: var(--gray-6);
    color: var(--blue);
    font-weight: 500;
}

.form__cont__loader {
    text-align: center;
    padding: .5rem 0 1rem;
}

.form__loader {
    width: 3.75rem;
    max-width: 100%;
}

.form__message {
    font-family: var(--poppins);
    font-size: .85rem;
    font-weight: 500;
}

.msg__success {
    color: #2ECF2E;
}
.msg__error {
    color: var(--terracota);
}

/* SERVICIOS | SERVICES */
.section__services__title {
    margin-top: 5rem;
    margin-bottom: 3rem;
}

.section__services__item {
    margin: 0 .5rem 2.18rem;
    padding: 3rem 1.25rem 2.28rem 2rem;
    border-radius: 1.5rem;
    transition: all .45s;
}

.section__services__item:hover {
    box-shadow: 0 .625rem 1.875rem rgba(51, 51, 51, 0.1);
}

.material-icons.services__icon {
    font-size: 1.6875rem;
    color: var(--white);
    padding: .83rem;
    border-radius: .6875rem;
    background-color: red;
}

.services__icon.services__icon--1 {
    background-color: var(--blue);
}

.services__icon.services__icon--2 {
    background-color: var(--green);
}

.services__icon.services__icon--3 {
    background-color: var(--terracota);
}

.section__services__subtitle {
    font-size: 1.5rem;
    margin: 1.9rem 0 1.4375rem;
}

.section__services__pgph {
    margin-bottom: 1.75rem;
}

.section__services__btn {
    cursor: pointer;
    font-size: 1rem;
    border-radius: .75rem;
    border: none;
    outline: none;
    padding: .4rem 1rem;
    transition: all .45s;
}

.section__services__btn:hover {
    background-color: var(--blue);
    color: var(--white);
}

.section__services__btn:focus {
    background-color: var(--white);
    color: var(--blue);
}

/* PORTAFOLIO | PORTFOLIO */
.section__portfolio {
    margin-top: 7.5rem;
    margin-bottom: 6.5625rem;
    padding: 0 .5625rem;
}

.section__portfolio__title {
    margin-left: 6.5vw;
    margin-bottom: 3.125rem;
    font-size: 1.5rem;
}

.section__portfolio__item {
    margin: 0 0 2.5rem;
}

.section__portfolio__img {
    max-width: 100%;
    border-radius: .75rem;
}

.section__portfolio__typesvc {
    margin-top: .5625rem;
    margin-bottom: -.0625rem;
    font-size: .75rem;
}

.section__portfolio__desc {
    font-size: 1.125rem;
}

.section__portfolio__btn {
    padding: 0;
    background-color: transparent;
    border: none;
    outline: none;
    font-size: 1.125rem;
}

.portfolio__btn__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-decoration: none;
    color: var(--blue);
}

.portfolio__btn__icon {
    margin-left: .375rem;
    transition: all .5s;
}

.portfolio__btn__link:active {
    color: var(--gray-2);
}

.portfolio__btn__link:hover .portfolio__btn__icon {
    margin-left: .625rem;
}

/* EQUIPO | TEAM */
.section__team {
    padding: 0 0 0 .4rem;
    margin-bottom: 7.5rem;
}

.container__team__title {
    padding-left: .1875rem;
}

.section__team__subtitle {
    font-size: 1.125rem;
    margin-bottom: 0;
}

.section__team__title {
    font-size: 2.25rem;
    margin: 0;
}

.section__team__pgph {
    font-size: 1rem;
    margin-bottom: .625rem;
}

.container__team__imgs {
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: .5rem .3125rem;
    max-width: 32.8125rem;
}

.section__team__img {
    border-radius: 1.5rem;
    max-width: 95%;
}

.team__img--1 {
    grid-row: 1 / span 2;
    align-self: center;
    justify-self: center;
}

.team__img--2 {
    width: 83%;
    align-self: flex-end;
}

/* CRÍTICA | REVIEW */
.section__quote {
    margin-bottom: 6.25rem;
}

.section__quote__figure {
    margin: 0;
}

.figure__blockquote {
    margin: 0;
}

.figure__quote {
    font-size: 1.5rem;
}

.figure__quote::before {
    content: open-quote;
}

.figure__quote::after {
    content: close-quote;
}

.figure__attribution {
    display: grid;
    grid-template-columns: 25% 75%;
    grid-template-rows: repeat(2, 1fr);
    margin-top: 2.1875rem;
    align-items: center;
    max-width: 21.25rem;
}

.attribution__img {
    max-width: 100%;
    border-radius: .75rem;
    grid-row: 1 / span 2;
}

.attribution__name {
    font-size: 1.5rem;
    margin-left: 1.75rem;
}

.attribution__cite {
    font-size: 1.125rem;
    margin-left: 1.75rem;
    font-style: normal;
}

/* FOOTER */
.footer {
    background-color: var(--footer-purple);
    padding: 2.5625rem 2.1875rem 1.0625rem;
}

.cont__footer__ppalinfo {
    margin-bottom: 10.3125rem;
}

.footer__list__links {
    font-size: 1rem;
    list-style: none;
    margin: 0 0 4.375rem;
    padding: 0;
}

.footer__li {
    margin-bottom: .5rem;
}

.footer__link {
    text-decoration: none;
    font-weight: lighter;
}

.footer__company {
    margin-bottom: 4.375rem;
    margin-bottom: 3.4375rem;
}

.footer__companyname {
    font-size: 2.125rem;
    margin: 0 0 .375rem;
}

.cont__footer__icons {
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.cont__footer__icons a {
    margin-right: .625rem;
}

.footer__icon {
    transition: all .42s;
}

.footer__icon:hover {
    box-shadow: 0px 1px 5px var(--white);
}

.footer__page__author {
    margin: 0;
    text-align: center;
    font-size: 1rem;
}

.page__author__link {
    text-decoration: underline;
    color: inherit;
}

/* BOTÓN REGRESO ARRIBA | BACK TO TOP BTN */
.back-to-top {
    text-decoration: none;
    cursor: pointer;
    border-radius: 50%;
    width: 1.5625rem;
    height: 1.5625rem;
    position: fixed;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--blue);
    color: var(--white);
    bottom: 1.875rem;
    right: .625rem;

    animation: backToTop 1.5s infinite;
    transition: all .6s;
}

.none {
    display: none;
}

@keyframes backToTop {
    50% { bottom: 2rem; }
}


/* MEDIA QUERIES */
/* max-width: 320px */
@media only screen and (max-width: 20rem) {
    .title:not(.section__hero__title), .section__hero__article {
        margin-left: .75rem;
    }

    .section__hero__subtitle, .hero__title--1 {
        padding-left: .75rem;
    }

    .form__field {
        grid-template-columns: 70% 30%;
    }

    .section__services__item {
        padding-left: 1.125rem;
    }

    .title.section__team__title {
        margin: 0;
    }

    .attribution__name { margin-left: .875rem; }

    .attribution__cite {
        font-size: 1rem;
        margin-left: .875rem;
    }

    .footer__page__author {
        font-size: .875rem;
    }
}

/* min-width: 450px */
@media only screen and (min-width: 28.125rem) {
    .section__hero__pgph, .section__portfolio__typesvc {
        font-size: .8125rem;
    }

    .form__label {
        font-size: .6875rem;
    }

    .section__portfolio__item {
        margin-bottom: 3.625rem;
    }

    .section__quote {
        padding-left: .5875rem;
    }
}

/* min-width: 490px */
@media only screen and (min-width: 30.625rem) {
    .section__services__item {
        max-width: 31.25rem;
        margin-left: 2vw;
    }

    .footer__form__field {
        grid-template-columns: 85% 15%;
    }
}

/* min-width: 700px */
@media only screen and (min-width: 43.75rem) {
    .form__label {
        font-size: .75rem;
    }

    .section__services__items {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: 1fr;
        column-gap: .9375rem;
    }

    .section__services__item {
        margin: 0;
    }

    .section__portfolio__title {
        margin-bottom: .5rem;
    }

    .container__portfolio__items {
        display: grid;
        grid-template-rows: 1fr 1fr auto;
        grid-template-columns: repeat(2, 1fr);
        column-gap: .8125rem;
    }

    .section__portfolio__item {
        margin-bottom: 0;
    }

    .portfolio__item--1, .portfolio__item--3 {
        margin-top: 27%;
    }

    .portfolio__item--3 {
        grid-row: 2 / span 2;
        align-self: flex-end;
    }

    .section__portfolio__typesvc {
        font-size: .875rem;
    }

    .section__portfolio__desc {
        font-size: 1.1875rem;
    }

    .section__portfolio__btn {
        display: flex;
        grid-column: 2 / span 1;
        justify-content: flex-end;
    }

    .section__quote__figure {
        width: 75%;
    }
}

/* min-width: 850px */
@media only screen and (min-width: 53.125rem) {
    body {
        margin-top: 7.375rem;
    }

    /* HEADER */
    .header {
        padding: 1.25rem 1.875rem 0;
    }

    .companyname {
        font-size: 1.625rem;
    }

    .nav__toggle {
        display: none;
    }

    .nav {
        height: fit-content;
        position: relative;
    }

    .nav__list {
        display: flex;
        justify-content: flex-end;
        padding: 0;
        background-color: transparent;
    }

    .nav__items {
        margin-left: 1.125rem;
    }

    .nav__items:last-child {
        border-bottom: none;
    }

    .nav__links:hover {
        padding-left: 0;
    }

    /* HERO */
    .section:not(.section__hero) {
        padding: 0 8%;
    }

    .title {
        font-size: 1.5625rem;
        margin-left: 0;
    }

    .section__hero__subtitle {
        font-size: .875rem;
        padding-left: 17%;
        margin-bottom: .6875rem;
    }

    .section__hero__title {
        font-size: 1.75rem;
    }

    .hero__title--1 {
        padding-left: 17%;
    }

    .section__hero__article {
        margin-left: 17%;
    }

    .section__hero__pgph {
        font-size: .875rem;
    }

    /* SERVICIOS | SERVICES */
    .section__services__title {
        margin-top: 8.75rem;
        margin-bottom: 2.375rem;
    }

    .section__services__items {
        column-gap: 1.875rem;
    }

    /* PORTFOLIO */
    .section__portfolio {
        margin-top: 10.625rem;
        margin-bottom: 9.375rem;
    }

    .container__portfolio__items {
        column-gap: 1.0625rem;
    }

    .section__portfolio__typesvc {
        margin: .625rem 0 .4375rem;
    }

    /* EQUIPO | TEAM */
    .section__team {
        margin-bottom: 9.375rem;
        display: grid;
        grid-template-columns: 1fr 60%;
        align-items: center;
        justify-content: space-between;
    }

    .section__team__title {
        font-size: 1.75rem;
    }

    .container__team__imgs {
        max-width: 100%;
    }

    /* CRÍTICA | REVIEW */
    .section__quote {
        margin-bottom: 10.625rem;
    }

    .section__quote__figure {
        width: 80%;
    }

    /* FOOTER */
    .footer {
        padding: 3.0625rem 0 1.0625rem;
    }

    .cont__footer__ppalinfo {
        display: flex;
        justify-content: space-around;
        align-items: flex-start;
        margin: 0 0 2.1875rem;
    }

    .footer__form__field {
        grid-template-columns: 73% 27%;
    }

    .footer__form__label {
        color: var(--gray-6);
    }

    .back-to-top {
        width: 1.875rem;
        height: 1.875rem;
    }
}

/* min-width: 990px */
@media only screen and (min-width: 61.875rem) {
    .nav__links:hover, .footer__link:hover {
        color: var(--blue);
    }
    
    .nav__links:focus {
        color: var(--gray-1);
    }

    .footer__link:focus {
        color: var(--white);
    }

    .container__team__imgs {
        gap: .9375rem;
    }
}

/* min-width: 1200px */
@media only screen and (min-width: 75rem) {
    body {
        margin-top: 8.4375rem;
    }

    /* HEADER */
    .companyname {
        font-size: 1.875rem;
    }

    .nav {
        font-size: 1.09375rem;
    }

    .nav__items {
        margin-left: 1.875rem;
    }

    /* HERO */
    .title:not(.section__hero__title) {
        font-size: 1.75rem;
    }

    .section__hero__subtitle {
        font-size: 1rem;
    }

    .section__hero__title {
        font-size: 2.0625rem;
    }

    .section__hero__article {
        max-width: 25%;
    }

    .form__label {
        font-size: .78125rem;
    }

    /* SERVICIOS | SERVICES */
    .section__services__items {
        column-gap: 4.6875rem;
    }

    /* PORTFOLIO */
    .section__portfolio {
        margin-bottom: 11.875rem;
    }

    .section__portfolio__desc {
        font-size: 1.28125rem;
    }

    .section__portfolio__btn {
        font-size: 1.25rem;
    }

    /* EQUIPO | TEAM */
    .section__team {
        margin-bottom: 11.875rem;
    }

    .title.section__team__title {
        font-size: 1.875rem;
    }

    /* CRÍTICA | REVIEW */
    .section__quote {
        margin-bottom: 12.8125rem;
    }

    .figure__quote {
        font-size: 1.75rem;
    }
}

/* Clase para esconder el botón 'back to top' */
.invisible {
    height: 0;
    width: 0;
    opacity: 0;
    pointer-events: none;
}

/* Clase para hacer aparecer elementos mediante scroll */
.section__services__items, .section__portfolio__item {
    opacity: 0;
    transform: translateY(40px) scale(0.9);

    transition: all .75s ease-in-out;
}

.section__team {
    opacity: 0;
    transform: translateX(-80px) translateY(0px);

    transition: all .75s ease-in-out;
}

.aparece {
    opacity: 1;
    transform: translateY(0px);
}