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

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

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

:root {
  --light-clr: #fff;
  --dark-clr: #23272a;
  --brand-clr: #5865f2;
  --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;
}

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

html {
  font-size: 62.5%;
}

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

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

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

/* hero section */

.hero{
  background: url("../assets/images/hero-bg.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.main-header{
  height: 8rem;
  padding:0 2.4rem;
}

.container{
  max-width: var(--container-width);
  margin: 0 auto;
}

.main-nav{
height: 100%;
padding: 18px;
display: flex;
align-items: center;
justify-content: space-between;
}

.logo{
width: 12.4rem;
}

.logo svg{
color: #fff;
}

.nav-list{
display: none;
font-family: var(--main-font-family-medium);
font-size: 16px;
letter-spacing: 0.5px;
}

.nav-item a{
font-size: 16px;
font-weight: bold;
}

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

.btn:hover{
box-shadow: 0 0.8rem 1.5rem rgba(0,0,0,0.2);
}

.btn-small{
font-size: 1.4rem;
padding: 0.7rem 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: 1.8rem;
}

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

.btn-close{
display: none !important;
}

.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;
}

.hero-btn-group .btn-light i{
align-items: center;
margin-right: 0.8rem;
}

.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 0.5s;
}

/*----colloboration--*/

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

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

.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---*/

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

/*----video call---*/

.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;
}

/*---download---*/

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

.download .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 0.5s;
}

.btn-brand i{
margin-right: 0.8rem;
}

.download .btn-brand{
margin-top: 4rem;
}

.btn-brand:hover{
background: #7983f5;
}

/*---footer--*/

.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-bold);
}

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

.languages img{
width: 2.4rem;
}

.languages span{
margin: 0 0.8rem;
}

.languages i{
color: var(--light-clr);
font-size: 18px;
}

.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: 0.8rem;
font-weight: 100;
}

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

.footer-link:hover{
text-decoration: underline;
}

.divider{
grid-column: 1/-1;
height: 1px;
background-color: var(--brand-clr);
margin-bottom: 3.2rem;
}

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

.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: 5.6rem;
    --num-of-grid-columns: 8;
    --section-spacing:8rem 4rem
  }

  .hero{
    min-height: 62.6rem;
  }

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

  .hero-description{
    margin: 4rem 0 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: 3;
    grid-row: span 2;
  }

  .spacer{
    display: block;
    grid: span 2;
  }
}

@media screen and (min-width: 1024px){
  :root{
    --num-of-grid-columns: 12;
    --section-spacing: 12rem 4rem;
  }

  .nav-list{
    display: flex;
    list-style: none;
  }

  .nav-link{
    font-size: 1.6rem;
    color: var(--light-clr);
    margin: 0 1rem;
    padding: 1rem;
    font-weight: bold;
  }

  .nav-link:hover{
    text-decoration: underline;
  }

  .hero-content-wrap{
    grid-column: 3 / span 8;
    text-align: center;
  }

  .mobile-toogle{
    display: none;
  }

  .grid-image{
    grid-column: span 7;
    margin: 0;
  }

  .text-group{
    grid-column: 9 / -1;
  }

  .order-1{
    grid-column: 1 / span 4;
  }

  .order-2{
    grid-column: 6/-1;
  }

  .video-call .text-group{
    grid-column: 2 / span 10;
  }


}