*,*::before,*::after{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
li{
    list-style: none;
}
:root{
    --DarkBlue: hsl(233, 26%, 24%);
    --LimeGreen: hsl(136, 65%, 51%);
    --BrighCyan: hsl(192, 70%, 51%);
}
body,html{
    height: 100%;
}
html{
    font-size: calc(1em + 1vw);
    font-family: Arial, Helvetica, sans-serif;
}

/* HEADER */
header{
    height: 60px;
    background-color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.2em;
    position: relative;
}
header h1{
    font-size: .8rem;
}

/* HEADER BARS */
header span{
    position: relative;
    width: 24px;
    height: 3px;
    background: #555;
    transition: background .3s ease-in;
}
header span::before,header span::after{
    position: absolute;
    content: '';
    height: 3px;
    right: 0;
    background-color: #555;
    transition: all .3s ease-in;
}
header span::before{
    width: 28px;
    bottom: 7px;
}
header span::after{
    width: 16px;
    top: 7px;
}

/* MENU */
header .menu{
    transform-origin: top;
    transform: scale(1,0);
    position: absolute;
    width: 100%;
    height: calc(100vh - 60px);
    top: 100%;
    left: 0;
    background: linear-gradient(to bottom,rgba(0,0,0,.8),rgba(255,255,255,.5));
    transition: transform .3s ease-in;
}
header .menu ul{
    width: 80%;
    background: transparent;
    margin: 1.2em auto;
    border-radius: 6px;
    text-align: center;
    padding: .8em 0;
}
header .menu ul li{
    margin: .8em;
    opacity: 0;
    color: #555;
}
header .menu ul li:hover{
    cursor: pointer;
}

/* MENU TRIGGER CHECKBOX */
#menu-trigger{
    display: none;
}
#menu-trigger:checked ~ .menu{
    transform: scale(1,1);
    transition: transform .3s ease-in;
}
#menu-trigger:checked ~ .menu ul{
    background: #fff;
    transition: background .2s ease-in .3s;
}
#menu-trigger:checked ~ .menu ul li{
    opacity: 1;
    transition: opacity .2s ease-in .5s;
}
#menu-trigger:checked ~ .menu-trigger-label span{
    background: transparent;
    transition: background .3s ease-in;
}
#menu-trigger:checked ~ .menu-trigger-label span::before{
    transform: rotate(45deg);
}
#menu-trigger:checked ~ .menu-trigger-label span::after{
    width: 28px;
    transform: rotate(-45deg);
}
#menu-trigger:checked ~ .menu-trigger-label span::before,
#menu-trigger:checked ~ .menu-trigger-label span::after{
    transition: transform .3s ease-in;
}
/* THE MAGIC */
#menu-trigger:checked ~ .menu-trigger-label:not(.class) span::before,
#menu-trigger:checked ~ .menu-trigger-label:not(.class) span::after{
    top: 0;
}

header .menu-trigger-label{
    height: 100%;
    display: flex;
    align-items: center;
}

 /* REQUEST INVITE BTN */
 header button{
     display: none;
 }


 /* MAIN */
 body,main{
    background: rgb(241, 241, 241);
 }

 /* Landing section */
 main #landing{
    height: 100vh;
     display: flex;
     flex-direction: column;
 }
/* Image holder */
 main #landing .landing-img{
     flex: 1;
     background-image: url('../images/bg-intro-mobile.svg');
     background-repeat: no-repeat;
     background-position: right;
     background-size: cover;
 }
 main #landing .landing-img img{
     width: 100%;
     margin-top: -28vh;
 }

 /* Text holder */
 main #landing .landing-txt{
    flex: .7;
    text-align: center;
 }
 main #landing .landing-txt h1{
     font-size: 2.4rem;
     font-weight: 300;
 }
 main #landing .landing-txt p{
     margin: 1.2rem 0;
     color: #777;
     line-height: 1.5;
 }
main #landing .landing-txt button{
    margin-bottom: 1.2em; 
}
 button{
     border-radius: 50px;
     padding: 10px 2rem;
     font-size: .9rem;
     border: transparent;
     color: #fff;
     background: linear-gradient(120deg,var(--LimeGreen),var(--BrighCyan) );
 }



 @media screen and (min-width: 724px){
     /* HEADER */
     header .menu-trigger-label{
         display: none;
     }
     header button{
         display: flex;
        padding: 8px 1rem;
        font-size: 16px;
     }
     header .menu{
        all: unset;
    }
    header nav ul{
        all: unset;
        display: flex;
    }
    header nav ul li{
        opacity: 1;
        font-size: 16px;
    }

    /* MAIN */
      main,body{
         background: rgb(241, 241, 241);
      }
    main #landing{
         flex-direction: row-reverse;
     }
     main #landing .landing-img{
        flex: 1;
        background-image: url('../images/bg-intro-desktop.svg');
        background-position-x: 60px;
        background-position-y: -150px;
    }
    main #landing .landing-img img{
        width: 85%;
        margin-right: -200px;
    }
    main #landing .landing-txt{
       flex: .8;
       text-align: left;
       padding: 3em 1.2em;
    }
    main #landing .landing-txt h1{
        font-size: 1.8rem;
    }
    main #landing .landing-txt p{
        font-size: .8rem;
    }
    main #landing .landing-txt button{
        font-size: .6rem;
    }
 }