/* DESIGN SYSTEM

--01--COLORS */

:root {
    --cyan-600: rgb(77, 150, 169);
    --cyan-300: #8FE3F9;
    --purple-600: #855FB1;
    --purple-300: #D9B8FF;
    --slate-900: #28283D;
    --slate-600: rgb(135, 135, 157);
    --slate-300: #D1D1DF;
    --white: #FAFAFA;
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    /* To make default rem 10px */
    font-size: 62.5%;
}

/* MOBILE FIRST STYLES ////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/

body {
    font-family: "Red Hat Display", sans-serif;
    background-color: var(--white);
    width: 100%;
    text-align: center;
}

/* SECTIONS ///////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/

.header {
    margin-bottom: 6.4rem;
}

.header__text-box {
    padding: 0 3.5rem;
}

.section-number {
    display: flex;
    align-items: center;
    flex-direction: column;
}

.section-number--2 {
    margin-bottom: -90px;
}

.main {
    padding: 0 4.4rem;
}

.main__gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 1.6rem;
    margin-bottom: 6.4rem;
}

.footer {
    padding: 6.4rem 3.2rem;
    background-image: linear-gradient(rgba(77, 150, 169, 0.8), rgba(77, 150, 169, 0.8)), url(assets/mobile/image-footer.jpg);
    background-size: cover;
}

/* IMAGES /.///////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/
.header__logo {
    display: block;
    margin: 4.8rem auto 6.4rem auto;
}

.header__hero-img--small {
    display: block;
    width: 100%;
    margin-bottom: 4.8rem;
}

.header__hero-img--right,
.header__hero-img--left {
    display: none;
}

.main__gallery__img {
    display: block;
    width: 100%;
    border-radius: 10px;
}

/* HEADING ////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/

.heading {
    line-height: 1.1;
    font-weight: 800;
}

.heading-1,
.heading-2 {
    color: var(--slate-900);
}

.heading-1 {
    font-size: 4rem;
    margin-bottom: 2.4rem;
}

.heading-2 {
    font-size: 3.2rem;
    margin-bottom: 3.2rem;
}

.heading-2--white {
    color: var(--white);
}

.heading-3 {
    color: var(--cyan-600);
    text-transform: uppercase;
    font-size: 1.2rem;
    letter-spacing: 4px;
    margin-bottom: 1.6rem;
}

/* PARAGRAPHS///////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/

.paragraph {
    color: var(--slate-600);
    font-size: 1.6rem;
    line-height: 1.5;
    margin-bottom: 2.4rem;
    font-weight: 500;
}

.footer .paragraph--white {
    color: var(--white);
}

.main .paragraph {
    margin-bottom: 6.4rem;
}

/* BUTTONS//////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/

.btn {
    display: block;
    margin: 0 auto 1.6rem auto;
    border: 0;
    padding: 1.6rem 4rem;
    border-radius: 2.9rem;
    color: var(--white);
    font-family: inherit;
    font-size: 1.6rem;
    font-weight: 800;
}

.btn--green span {
    color: var(--cyan-300);
}

.btn--green {
    background-color: var(--cyan-600);
    transition: all .2s;
}

.btn--green:hover {
    background-color: #71C0D4;
}

.btn--violet {
    background-color: var(--purple-600);
    transition: all .2s;
}

.btn--violet:hover {
    background-color: #B18BDD;
}

.btn--violet span {
    color: var(--purple-300);
}

/* COMPONENTS///////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/

.line {
    width: 1px;
    height: 80px;
    background-color: var(--slate-300);
}

.circle {
    width: 56px;
    height: 56px;
    border: 1px solid var(--slate-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -1px;
    margin-bottom: 64px;
}

.section-number span {
    font-family: inherit;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--slate-600);
}

.section-number--2 .circle {
    z-index: 5;
    background-color: white;
}

/* TABLET MEDIA QUERIES/////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/

@media only screen and (min-width: 768px) {
    .header__text-box {
        padding: 0 15.8rem;
    }

    .main__gallery {
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: 1fr;
    }

    .main__text-box {
        padding: 0 8.8rem;
    }

    .footer {
        padding: 6.4rem 13.2rem;
        background-image: linear-gradient(rgba(77, 150, 169, 0.8), rgba(77, 150, 169, 0.8)), url(assets/tablet/image-footer.jpg);
    }

    .heading-1 {
        font-size: 4.8rem;
    }

    .heading-2 {
        font-size: 3.6rem;
    }

    .heading-3 {
        font-size: 1.4rem;
    }

    .btn {
        display: inline-block;
        margin-right: 1.6rem;
    }
}

/* DESKTOP MEDIA QUERIES////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////*/

@media only screen and (min-width: 1440px) {
    .header {
        margin-bottom: 14rem;
    }

    .header__hero {
        display: grid;
        grid-template-columns: min-content 1fr min-content;
        gap: 12rem;
    }

    .header__text-box {
        padding: 0;
    }

    .main {
        padding: 0 16rem;
    }

    .main__gallery {
        gap: 3.2rem;
    }

    .main__text-box {
        padding: 0 28.8rem;
    }

    .footer {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 4rem;
        text-align: start;
        padding: 11.2rem 16rem;
        background-image: linear-gradient(rgba(77, 150, 169, 0.8), rgba(77, 150, 169, 0.8)), url(assets/desktop/image-footer.jpg);
    }

    .header__logo {
        margin: 6.4rem auto 8rem auto;
    }

    .header__hero-img--small {
        display: none;
    }

    .header__hero-img--right,
    .header__hero-img--left {
        display: block;
    }

    .heading-1 {
        font-size: 6.4rem;
        margin-bottom: 3.2rem;
    }

    .heading-2 {
        font-size: 4rem;
    }

    .main__text-box .heading-2 {
        padding: 0 5rem;
    }

    .heading-3 {
        font-size: 1.6rem;
    }

    .paragraph {
        font-size: 1.8rem;
        margin-bottom: 3.2rem;
    }

    .main .paragraph {
        margin-bottom: 7.2rem;
    }

    .btn {
        align-self: start;
    }
}