main.css

@font-face {
    font-family: 'Whitney Light';
    src: url('./assets/fonts/whitneylight.woff') format('woff');
}

@font-face {
    font-family: 'Whitney Medium';
    src: url('./assets/fonts/whitneymedium.woff') format('woff');
}

@font-face {
    font-family: 'Whitney Bold';
    src: url('./assets/fonts/whitneybold.woff') format('woff');
}

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

html {
    font-size: 62.5%;
}

:root {
    --light-clr: #FFF;
    --dark-clr: #23272A;
    --brand-clr: #7289DA;
    --off-white-clr: #f6f6f6;
    --general-font-size: 2rem;
    --primary-title-font-size: 4.8rem;
    --secondary-title-font-size: 4rem;
    --main-font-family-light: 'Whitney Light', sans-serif;
    --main-font-family-medium: 'Whitney Medium', sans-serif;
    --main-font-family-bold: 'Whitney Bold', sans-serif;
    --num-of-grid-columns: 4;
    --section-spacing: 5.6rem 2.4rem;
    --container-width: 126rem;
}

body {
    font-size: var(--general-font-size);
    font-family: var(--main-font-family-light);
}

a {
    text-decoration: none;
    display: inline-block;
}

img {
    max-width: 100%;
    display: block;
}

/*@keyframes wave-animation {*/
/*    0% {*/
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/*    }*/
/*    50% {*/
/*        d: path("M655.558582,28.4898877 C500.191373,61.6062216 422.833785,83.5422763 266.940085,49.8995879 C112.480383,16.5663637 84.0992497,8.02840272 0,44.7243294 L0,150.727527 L1920,150.727527 L1920,49.8995879 C1580.91676,-34.8808285 1438.10804,73.6768193 1148.0266,38.0019829 C857.945166,2.32714659 810.925791,-4.62644617 655.558582,28.4898877 Z");*/
/*    }*/
/*    100% {*/
/*        d: path("M842.322034,38.0019829 C686.954825,71.1183168 623.386282,53.08497 467.492582,19.4422816 C313.032879,-13.8909426 84.0992497,8.02840272 0,44.7243294 L0,150.727527 L1920,150.727527 L1920,76.8685643 C1512.23604,-35.3595639 1568.70222,67.4289432 1278.62078,31.7541069 C988.539347,-3.92072949 997.689243,4.88564905 842.322034,38.0019829 Z");*/
/*    }*/
/*}*/

.hero {
    background: url('./assets/images/hero-bg.jpg') center/cover;
}

.main-header {
    height: 8rem;
    padding: 0 2.4rem;
}
.container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.main-nav {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    width: 12.4rem;

}

.nav-list {
    display: none;
}

.nav-items-right {
    display: flex;
    align-items: center;
}

.btn:hover{
    box-shadow: 0 .8rem 1.5rem rgba(0,0, 0, .2);
}

.btn-small {
    font-size: 1.4rem;
    padding: .7rem 1.6rem;
    border-radius: 4rem;
}

.btn-light {
    background-color: var(--light-clr);
    color: var(--dark-clr);
}

.btn-light:hover {
  color: var(--brand-clr);
}

.btn-login {
    margin-right: 1.6rem;
    line-height: 1.8;
}

.mobile-toggle {
    display: flex;
    font-size: 3.6rem;
    color: var(--light-clr);
    cursor: pointer;
}

.btn-close  {
    display: none;
}

.row {
    display: grid;
    grid-template-columns: repeat(var(--num-of-grid-columns),1fr);
    gap: 0 2rem;
    padding: var(--section-spacing);
}

.hero-content-wrap {
    grid-column: span var(--num-of-grid-columns);
    color:var(--light-clr)
}

.title {
    font-family: var(--main-font-family-bold);
}

.primary-title {
    font-size: var(--primary-title-font-size);
    line-height: 120%;
}

.hero-description {
    line-height: 3.2rem;
    margin-top: 2.4rem;
}

.hero-btn-group .btn-light {
    margin: 2.4rem 2.4rem 0 0 ;
    display: inline-flex;
}

.btn-large {
    padding: 1.6rem 3.2rem;
    border-radius: 2.8rem;
}

.btn-dark {
    background-color: var(--dark-clr);
    color: var(--light-clr);
    margin-top: 2.4rem;
    transition: background-color .5s;
}

.btn-dark:hover{
    background-color: #36393f;
}

.grid-image { 
    margin-top: 2.4rem;
    grid-column: span 4 ;
}

.text-group {
    margin-top: 2rem;
    grid-column: span 4;
}

.secondary-title {
    font-size: var(--secondary-title-font-size);
}

.text-group p {
    margin-top:2rem ;
    line-height: 3.2rem;
}

.voice-channel {
    background-color: var(--off-white-clr);
}

.video-call {
    background-color: var(--off-white-clr);
}

.video-call .row {
    padding-bottom: 8rem;
}

.video-call .text-group {
    grid-column: span var(--num-of-grid-columns);
    margin-top: 0;
}

.video-call .text-group p {
    margin-top: 2.4rem;
}

.video-call .grid-image {
    width:100% ;
    grid-column: span var(--num-of-grid-columns);
    margin-top: 2.4rem;
}



.downlaod {
    background-color: var(--off-white-clr);
}

.downlaod.remove-grid {
    display: block;
    padding-top: 0;
    text-align: center;
}


.sparkles {
    display: inline-block;
}


.download h2 {
    font-size: 3.2rem;
    font-family: var(--main-font-family-medium);
}

.btn-brand {
    background-color: var(--brand-clr);
    color: var(--light-clr);
    transition: background-color .5s ;

}

.downlaod .btn-brand {
    margin-top: 4rem;
}
.btn-brand:hover{
    background-color: #8ea1e1;
}

.main-footer {
    background-color: var(--dark-clr);
    color: var(--light-clr);
    padding: 8rem 2.4rem 6.4rem;
}

.main-footer .row {
    padding: 0;

}

.info-box {
    grid-column: span 4;
    margin-bottom: 5.6rem;
    
}

.footer-title {
    color: var(--brand-clr);
}

.info-box .footer-title {
    font-size: 3.2rem;
    font-family: var(--main-font-family-medium);
}

.languages {
    margin: 2.4rem 0;
    display: flex;
    align-items: center;
    font-size: 1.4rem;
}

.languages img{
    width: 2.4rem;
}

.languages span {
    margin: 0 .8rem;
}

.sm-link {
    font-size: 2.3rem;
    color: inherit;
    margin-right: 2rem;
}

.spacer {
    display: none;
}

.footer-links-group{
    margin-bottom: 4rem;
    font-size: 1.6rem;
    grid-column: span 2 ;
}

.footer-links-group .footer-title {
    font-size: inherit;
    padding-top: .8rem;
    font-weight: 100;
}

.footer-link {
    display: block;
    margin-top: 1.2rem;
    color: inherit;
}


.main-footer .remove-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;

}

.main-footer .btn-brand {
    line-height: 1.8;
}

@media screen and (min-width:768px){
    :root {
        --primary-title-font-size: 5.6rem;
        --secondary-title-font-size: 4.8rem;
       
        --num-of-grid-columns: 8;
        --section-spacing: 8rem 4rem;
    }

    .hero {
        min-height: 62.6rem;

    }

    .hero-content-wrap{
         grid-column: span 5 ;
    }

    .hero-description {
        margin-top: 4rem 0 .8rem;
    }

    .grid-image {
        margin: auto 0 ;

    }

    .text-group {
        margin-top: 0;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }
    .order-1 {
        order: 1;
    }
    .order-2 {
       order: 2;
    }
    .video-call {
        text-align: center;
    }
    .info-box {
        grid-column: span 3 ;
    }
}