/* GOOGLE FONTS */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

/* VARIABLE CSS */
:root {
    --header-height: 3rem;

    /* COLORS */
    --first-color: #39BCEA;
    --first-color-alt: #5C87C5;
    --title-color: #393939;
    --text-color: #000000;
    --text-color-light: #A6A6A6;
    --body-color: #FBFEFD;
    --container-color: #FFFFFF;

    /* FONT AND TYPOGRAPHY */
    --body-font: 'Poppins', sans-serif;
    --biggest-font-size: 2.25rem;
    --h1-font-size: 1.5rem;
    --h2-font-size: 1.25rem;
    --h3-font-size: 1rem;
    --normal-font-size: .938rem;
    --small-font-size: .813rem;
    --smaller-font-size: .75rem;

    /* FONT WEIGHT */
    --font-medium: 500;
    --font-semi-bold: 600;

    /* MARGENES */
    --mb-1: .5rem;
    --mb-2: 1rem;
    --mb-3: 1.5rem;
    --mb-4: 2rem;
    --mb-5: 2.5rem;
    --mb-6: 3rem;

    /* Z INDEX */
    --z-tooltip: 10;
    --z-fixed: 100;
}

@media screen and (min-width: 768px) {
    :root {
        --biggest-font-size: 4rem;
        --h1-font-size: 2.25rem;
        --h2-font-size: 1.5rem;
        --h3-font-size: 1.25rem;
        --normal-font-size: 1rem;
        --small-font-size: .875rem;
        --smaller-font-size: .813rem;
    }
}

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

html {
    scroll-behavior: smooth;
}

/* VARIABLE DARK THEME */
body.dark-theme {
    --title-color: #F1F3F2;
    --text-color: #C7D1CC;
    --body-color: #000000;
    --container-color: #27302C;
}

/* BUTTON DARK/LIGHT */
.change-theme {
    position: absolute;
    right: 1rem;
    top: 1.8rem;
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
}

body {
    margin: var(--header-height) 0 0 0;
    font-family: var(--body-font);
    font-size: var(--normal-font-size);
    background-color: var(--body-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

ul {
    padding: 0;
    list-style: none;
}

a {
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* CLASS CSS */
.section {
    padding: 4rem 0 2rem;
}

.section-title, .section-subtitle {
    text-align: center;
}

.section-title {
    font-size: var(--h1-font-size);
    color: var(--title-color);
    margin-bottom: var(--mb-3);
}

.section-subtitle {
    display: block;
    color: var(--first-color);
    font-weight: var(--font-medium);
    margin-bottom: var(--mb-1);
}

/* LAYOUT */
.bd-container {
    max-width: 960px;
    width: calc(100% - 2rem);
    margin-left: var(--mb-2);
    margin-right: var(--mb-2);
}

.bd-grid {
    display: grid;
    gap: 1.5rem;
}

.l-header {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-fixed);
    background-color: var(--body-color);
}

/* NAV */
.nav {
    max-width: 1024px;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@media screen and (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: -100%;
        left: 0;
        width: 100%;
        padding: 1.5rem 0 1rem;
        text-align: center;
        background-color: var(--body-color);
        transition: .4s;
        box-shadow: 0 4px 4px rgba(0,0,0,.1);
        border-radius: 0 0 1rem 1rem;
        z-index: var(--z-fixed);
    }
}

.nav__item {
    margin-bottom: var(--mb-2);
}

.nav__link, .nav__logo, .nav__toggle {
    color: var(--text-color);
    font-weight: var(--font-medium);
}

.nav__logo {
    position: relative;
    width: 100px;
}

.nav__logo:hover {
    color: var(--first-color);
}

.nav__link {
    transition: .3s;
}

.nav__link:hover {
    color: var(--first-color);
}

.nav__toggle {
    font-size: 1.3rem;
    cursor: pointer;
}

/* SHOW MENU */
.show-menu {
    top: var(--header-height);
}

/* ACTIVE MENU */
.active-link {
color: var(--first-color);
}

/* CHANGE BACKGROUND HEADER */
.scroll-header {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

/* SCROLL TOP */
.scrolltop {
    position: fixed;
    right: 1rem;
    bottom: -20%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: .3rem;
    background: var(--first-color);
    border-radius: .4rem;
    z-index: var(--z-tooltip);
    transition: .4s;
    visibility: hidden;
}

.scrolltop:hover {
    background-color: var(--first-color-alt);
}

.scrolltop__icon {
    font-size: 1.8rem;
    color: var(--body-color);
}

/* SHOW SCROLLTOP */
.scroll-top {
    visibility: visible;
    bottom: 1.5rem;
}

/* HOME */
.home__container {
    height: calc(100vh - var(--header-height));
    align-content: center;
}

.home__title {
    font-size: var(--biggest-font-size);
    color: var(--first-color);
    margin-bottom: var(--mb-1);
}

.home__subtitle {
    font-size: var(--h1-font-size);
    color: var(--title-color);
    margin-bottom: var(--mb-4);
}

.home__img {
    width: 300px;
    justify-self: center; 
}

/* BUTTON */
.button {
    display: inline-block;
    background-color: var(--first-color);
    color: #FFFFFF;
    padding: .75rem 1rem;
    border-radius: .5rem;
    transition: .3s;
}

.button:hover {
    background-color: var(--first-color-alt);
}

/* ABOUT */
.about__data {
    text-align: center;
}

.about__description {
    margin-bottom: var(--mb-3);
}

.about__img {
    width: 280px;
    border-radius: .5rem;
    justify-self: center;
}

/* FEATURE */
.feature__container {
    row-gap: 2.5rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature__content {
    text-align: center;
}

.feature__img {
    width: 64px;
    height: 64px;
    fill: var(--first-color);
    margin-bottom: var(--mb-2);
}

.feature__title {
    font-size: var(--h3-font-size);
    color: var(--title-color);
    margin-bottom: var(--mb-1);
}

.feature__description {
    padding: 0 1.5rem;
}

/* CARD */
.card__container {
    grid-template-columns: repeat(2, 1fr);
    justify-content: center;
}

.card__content {
    position: relative;
    display: flex;
    flex-direction: column;
    background-color: var(--container-color);
    border-radius: .5rem;
    box-shadow: 0 2px 4px rgba(3, 74, 40, .15);
    padding: .75rem;
}

.card__img {
    width: 100px;
    align-self: center;
    margin-bottom: var(--mb-2);
}

.card__name, .card__price {
    font-weight: var(--font-semi-bold);
    color: var(--title-color);
}

.card__name {
    font-size: var(--normal-font-size);
}

.card__detail, .card__price {
    font-size: var(--small-font-size);
}

.card__detail {
    margin-bottom: var(--mb-1);
}

.card__button {
    position: absolute;
    bottom: 0;
    right: 0;
    display: flex;
    padding: .625rem .813rem;
    border-radius: .5rem 0 .5rem 0;
}

/* CONTACT */
.contact__container {
    text-align: center;
}

.contact__description {
    margin-bottom: var(--mb-3);
}

/* FOOTER */
.footer__container {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    row-gap: 2rem;
}

.footer__logo {
    font-size: var(--h3-font-size);
    color: var(--first-color);
    font-weight: var(--font-semi-bold);
}

.footer__description {
    display: block;
    font-size: var(--small-font-size);
    margin: .25rem 0 var(--mb-3);
}

.footer__social {
    font-size: 1.5rem;
    color: var(--title-color);
    margin-right: var(--mb-2);
}

.footer__title {
    font-size: var(--h2-font-size);
    color: var(--title-color);
    margin-bottom: var(--mb-2);
}

.footer__link {
    display: inline-block;
    color: var(--text-color);
    margin-bottom: var(--mb-1);
}

.footer__link:hover {
    color: var(--first-color);
}

.footer__copy {
    text-align: center;
    font-size: var(--small-font-size);
    color: var(--text-color-light);
    margin-top: 3.5rem;
}

/* MEDIA QUERIES */
@media screen and (min-width: 576px) {
    .home__container,
    .about__container {
        grid-template-columns: repeat(2, 1fr);
        align-items: center;
    }

    .about__data, .about__initial,
    .contact__container, .contact__initial {
        text-align: initial;
    }

    .about__img {
        width: 380px;
        order: -1;
    }

    .contact__container {
        grid-template-columns: 1.75fr 1fr;
        align-items: center;
    }

    .contact__button {
        justify-self: center;
    }
}

@media screen and (min-width: 768px) {
    body {
        margin: 0;
    }

    .section {
        padding-top: 8rem;
    }

    .nav {
        height: calc(var(--header-height) + 1.5rem);
    }

    .nav__list {
        display: flex;
    }

    .nav__item {
        margin-left: var(--mb-5);
        margin-bottom: 0;
    }

    .nav__toggle {
        display: none;
    }

    .change-theme {
        position: initial;
        margin-left: var(--mb-2);
    }

    .home__container {
        height: 100vh;
        justify-items: center;
    }

    .feature__container, .card__container {
        margin-top: var(--mb-6);
    }

    .card__container {
        grid-template-columns: repeat(3, 210px);
        column-gap: 4rem;
    }

    .card__content {
        padding: 1.5rem;
    }

    .card__img {
        width: 130px;
    }
}


@media screen and (min-width: 960px) {
    .bd-container {
        margin-left: auto;
        margin-right: auto;
    }

    .home__img {
        width: 500px;
    }

    .about__container {
        column-gap: 7rem;
    }
}