*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    list-style-type: none;
    text-decoration: none;
    font-size: 100%;
    color: inherit;
    border: none;
}

body {
  background-color: #FAFAFA;  
  font-family: 'Inter', sans-serif;
}

h1, h2, h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;

}

h1{
    font-size: clamp(28px, calc(28px + (36 - 28) * ((100vw - 320px) / (1100 - 320))), 36px);
    line-height: 1.25;
    color: #111111;
}

h2{
    font-size: clamp(22px, calc(22px + (28 - 22) * ((100vw - 320px) / (1100 - 320))), 28px);
    line-height: 1.25;
    color: #111111;
    margin-bottom: clamp(24px, calc(24px + (48 - 24) * ((100vw - 320px) / (1100 - 320))), 48px);
}

h3{
    font-size: clamp(18px, calc(18px + (20 - 18) * ((100vw - 320px) / (1100 - 320))), 20px);
    line-height: 1.25; 
    color: #fff;
}

p{
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
    color: #555555;
}

button, .join-btn{
    display: inline-block;
    padding: 10px 20px;
    border-radius: 6px;


    background-color: #111111;
    

    font-size: clamp(16px, calc(16px + (18 - 16) * ((100vw - 320px) / (1110 - 320))), 18px);
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    color: #fff;
    text-align: center;


    cursor: pointer;
}

section{
    padding: clamp(45px, calc(45px + (75 - 45) * ((100vw - 320px) / (768 - 320))), 75px) 0;
}

.container{
    max-width: 1150px;
    padding: 0 25px;
    margin: 0 auto;
}

.grid{
    display: flex;
    flex-wrap: wrap;
    --gap: clamp(18px, calc(18px + (24 - 18) * ((100vw - 320px) / (1100 - 320))), 24px);
    --elems: 3;

    display: flex;
    flex-wrap: wrap;
    gap: var(--gap);
}

.grid-item{
    width: calc((100%  - (var(--elems) - 1) * var(--gap)) / var(--elems));
    padding: 20px;
    border-radius: 10px;
    background-color: #111111;

    display: flex;
    flex-direction: column;
    gap: 24px;
}

.grid-item p{
    color: #fff;
}






/* header */

header{
    padding: 25px 0;
}

.header-container{
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo{
    font-size: clamp(20px, calc(20px + (30 - 20) * ((100vw - 320px) / (600 - 320))), 30px);
    font-weight: 700;
    color: #111111;
}

.header-list{
    display: flex;
    gap: clamp(18px, calc(18px + (24 - 18) * ((100vw - 320px) / (1100 - 320))), 24px);
    color: #111111;
}

.burger-menu-btn{
    width: 50px;
    height: 50px;
    padding: 0;
    border-radius: 50%;


    display: none;
    align-items: center;
    justify-content: center;
}

.burger-menu-btn svg{
    width: 24px;
    fill: #fff;
}






/* footer */

footer{
    padding: clamp(45px, calc(45px + (75 - 45) * ((100vw - 320px) / (768 - 320))), 75px) 0;
    border-top: 1px solid #111111;
}

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

.footer-logo{
    display: block;
    margin-bottom: 24px;
}

.social-media{
    display: flex;
    gap: clamp(18px, calc(18px + (24 - 18) * ((100vw - 320px) / (1100 - 320))), 24px);
}

.footer-list{
    display: flex;
    flex-direction: column;
    gap: 10px;
    color: #111111;
}






@media(max-width: 967px){
    .header-nav{
        width: 100%;
        padding: 80px 0 50px 0;
        background-color: #FAFAFA;


        position: fixed;
        top: -100%;
        right: 0;
        left: 0;

       z-index: 999;

       box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
       

       transition: .3s;
    }

    .header-nav.active-burger-menu{
        top: 0;
    }

    .close-menu-btn{
        display: flex;
        position: absolute;
        top: 25px;
        right: 25px;
    }

    .header-list{
       display: flex;
       flex-direction: column;
       align-items: center;
       gap: 30px;

       font-size: 18px;
    }

    .burger-btn{
        display: flex;
    }

    .grid{
        --elems: 2;
    }
}

@media(max-width: 700px){
    .grid{
        --elems: 1;
    }
}

@media(max-width: 430px){
    .footer-container{
        flex-direction: column;
        align-items: flex-start;
        gap: 30px;
    }
}