@import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');
*,
*::before,
*::after{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    border: 0;
    font-family: "Poppins", sans-serif;
    
}

a,
a:link,
a:visited{
    text-decoration: none;
    outline: none;
    border: none;
}

ul,
li{
    list-style: none;
    margin: 0;
    padding: 0;
}

section,
span,
p{
    margin: 0;
    padding: 0;
    outline: none;
    border: none;
}

/* Sıfırlama kodları bitti */



body{
    background-image: url(images/background.jpg);
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
    height: 100vh;
    
}

.container{
    max-width: 1170px;
    margin: 0 auto;
    padding: 0 15px;
}

.header{
    background-image: url(images/background.jpg);
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
    height: 25vh;
}


.header-navbar{
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 30px 0;
}

.header-logo{
    display: flex;
    align-items: center;
    color: white;
    font-size: 16px;
    letter-spacing: 3px;
    padding-bottom: 5px;
}


.header-logo h2 {
    font-size: 25px;
    letter-spacing: 4px;
    color: white;
    border-bottom: 5px solid white;
    border-radius: 30px;
    padding-bottom: 5px;
    margin: 0; 
}
.header-logo img {
    width: 150px; 
    height: auto; 
    margin-right: 30px; 
}

.header-navbar h2 {
    color: white;
}

ul{
    display: flex;
}

li{
    margin-left: 25px;
    display: flex;
}

a{
    color: white;
    font-weight: bold;
    font-size: 15px;
}

#menu-icon {
    display: none;
    width: 50px;
    height: 50px;
    margin-left: 40px;
}

/* Header bitti */

/* main kısmı */

main {
    color: white;
    padding: 20px 0;
}

section{
    position: relative;
    margin-bottom: 40px;
}

section:after {
    content: "";
    display: block;
    width: 50%;
    height: 2px; 
    background-color: hsl(206, 44%, 30%); 
    position: absolute;
    bottom: -20px; 
    left: 20%;
}

section.intro:after, section.outro:after{
    display: none;
}


.intro h1 {
    margin-top: 55px;
    font-size: 2.5em;
    margin-bottom: 20px;
    text-align: center;
}

.intro p {
    font-size: 1.2em;
    text-align: center;
    margin-bottom: 40px;
}

.content {
    margin-bottom: 40px;
}

.content h2 {
    font-size: 2em;
    margin-bottom: 10px;
}

.content p {
    font-size: 1em;
    line-height: 1.6;
    margin-bottom: 20px;
}



/* main kısmı bitti */

/* Footer */

.footer h2{
    width: 100%;
    text-align: center;
    margin: 0 auto;
    color: rgb(255, 255, 255);
    font-size: 30px;
    font-weight: bold;
    padding: 50px 0;
}

.footer h2::after{
    content: "";
    width: 30px;
    height: 3px;
    background-color: white;
    margin: 0 auto;
    display: block;
    margin-top: 10px;
}


.footer {
    background-color: rgba(0, 0, 0, 0.37);
    backdrop-filter: blur(3px);
}

.footer-copyright{
    color: white;
    text-align: center;
    flex-basis: 55%;
    line-height: 2;
    font-size: 15px;
    margin-bottom: 25px;
}

.footer-content{
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

.footer-social img{
    width: 200px; 
    height: auto; 
    margin: 0 80px;
    margin-bottom: 20px;
}

/* Footer bitti */
@media only screen and (max-width: 1130px){
    .header-menu ul{
        display: flex;
        align-items: center;
        justify-content: center;
        flex-direction: column;
        position: absolute;
        margin-top: 75px;
        top: 100px;
        left: 0;
        background: transparent;
        backdrop-filter: blur(8px);
        width: 100%;
        overflow: hidden;
        transition: max-height .5s;
    }
    .header-menu ul li{
        margin-right: 50px;
        margin-top: 3px;
        margin-bottom: 3px;
    }
    .header-menu #menu-icon{
        display: block;
        cursor: pointer;
    }

    .intro h1 {
        margin-top: 80px;
        font-size: 2.5em;
        margin-bottom: 20px;
        text-align: center;
    }

}

@media only screen and (max-width: 1130px){
    .footer-social ul li{
        
        flex-basis: 30%;
        text-align: center;
        align-items: center;
        justify-content: center;
    }
    .footer-social ul li:last-child{
        margin-right: 30px;
    }
    .footer-social img{
        width: 200px; 
        height: auto; 
        margin: 0 20px;
        margin-bottom: 20px;
    }
}

@media only screen and (max-width: 1130px){

    main{
       height: auto;
    }

}

@media only screen and (max-width: 800px){

    .footer-social img{
        width: 130px; 
        margin: 0 15px;
    }

}

@media only screen and (max-width: 555px){

    .header img{
        display: none;
    }

    .footer-social img{
        width: 80px; 
        margin: 0 7px;
        margin-bottom: 20px;
    }



     .header-menu ul{

        margin-top: 30px;
        top: 100px;

    }

    .intro h1 {
        margin-top: 40px;


    }
}

@media only screen and (max-width: 430px){



    .footer-social img{
        width: 70px; 
        margin: 0 4px;
        margin-bottom: 20px;
    }


}

@media only screen and (max-width: 360px){



    .footer-social img{
        width: 70px; 
        margin: 0 4px;
        margin-bottom: 20px;
    }


}