:root{
    --anarenk:rgb(42,42,42);
    --yanrenk:rgb(34,34,34)
}
body,html{
    background-color: var(--anarenk);
    font-family: sans-serif;
    font-size: 24px;
    margin: 0;
    padding: 0;
    /*nav*/
}
nav{   
    position: sticky;
    z-index: 10000; 
    top: 0;
    font-size: 25px;
    display: flex;
    align-items: center;
    background-color:rgb(34,34,34,0.7);
    backdrop-filter:blur(5px)
;
    height: 7vh;
    color: white;
}
.header{
    font-size: 32px;
    margin-left: 2vh;
    font-weight: bold;
}
.spn{
    color: rgb(137, 202, 255);
    font-size: 24px;
}
.logo{
    padding-right:1vh;
    border-right: 1px solid  white;
}
nav a{
    transition: all,0.5s;
    color: rgb(187, 185, 185);
    font-weight: bold;
    text-decoration: none;
        margin-left: 3vh;

}
nav a:hover{
    color: rgb(252, 214, 0);
}
/* iletişim */
.iletisim{
    flex-direction: column;
    box-shadow: 10px 10px 15px rgba(0, 0, 0, 0.205);
    box-sizing: border-box  ;
    display: flex;

    border-radius: 15px;
    margin: 0 auto;
    margin-top: 5vh;
    width: 60vw;
    min-height: 30vh;
    background-color: var(--yanrenk);
}
.headerdiv h1{
    font-size: 72px;
}
.headerdiv p{
    margin: 0;
}
.headerdiv{
        color: rgb(87, 86, 86);

        align-items: center;
    justify-content: center;
}
.icerik{
    flex-direction: column;
    color: white;
    padding: 15px   ;
    min-height: 45vh;
}
.icerik h2{
    padding-left: 1vh;
    border-left: 8px solid yellow;
}
.icerik h3{
    font-size: 30px;
}

.icerik *{
    margin: 10px;
}
.ftr{
    margin-top: 10vh;
    font-size: 15px;
    color: gray;
}
.icerik a{
    color: white;
    text-decoration: none;
    font-weight: bold;
}
@media (max-width: 768px) {
    /* Navigasyon düzeni */
    nav {
        height: auto;
        flex-direction: column;
        padding: 15px;
        gap: 10px;
    }

    .logo {
        border-right: none;
        border-bottom: 1px solid white;
        padding-right: 0;
        padding-bottom: 10px;
        text-align: center;
    }

    nav a {
        margin-left: 0;
    }

    /* Kartların genişliği */
    .iletisim {
        width: 90vw;
        margin-top: 20px;
        padding: 15px;
    }

    /* Başlık ve içerik boyutları */
    .headerdiv h1 {
        font-size: 40px;
    }

    .icerik h2 {
        font-size: 24px;
    }

    .icerik * {
        margin: 5px 0;
    }
}