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

body{
    font-family: Arial, Helvetica, sans-serif;
    background: #f4f7fa;
    color: #222;
}

header{
    position: sticky;
    top: 0;
    z-index: 1000;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 10px 30px;
    height: 90px;
    overflow:hidden;

    background: #1c476f;
}

nav a{
    color: white;
    text-decoration: none;
    margin-left: 25px;
    font-weight: bold;
}

nav a:hover{
    color: #FFD166;
}

section{
    padding: 80px;
}

#anasayfa{
    background: linear-gradient(rgba(11,60,93,.75), rgba(11,60,93,.75)),
    url("https://images.unsplash.com/photo-1606185540834-d6e7483ee1a4?q=80&w=1170&auto=format&fit=crop&ixlib=rb-4.1.0&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D");
    background-size: cover;
    background-position: center;

    color: white;
    text-align: center;
    padding: 140px 80px;
}

#anasayfa h2{
    font-size: 48px;
    margin-bottom: 20px;
}

#anasayfa p{
    font-size: 20px;
    margin-bottom: 35px;
}

#anasayfa a{
    display: inline-block;
    background: #FFD166;
    color: black;
    text-decoration: none;
    padding: 15px 35px;
    border-radius: 8px;
    font-weight: bold;
}

#hakkimizda,
#iletisim{
    background: white;
    margin: 30px 80px;
    border-radius: 12px;
    padding: 50px;
}

h2{
    margin-bottom: 20px;
}

footer{
    background: #0B3C5D;
    color: white;
    text-align: center;
    padding: 25px;
}

#hizmetler{
    padding: 80px;
    text-align: center;
}

.kartlar{
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.kart{
    width: 300px;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,.1);
    transition: .3s;
}

.kart:hover{
    transform: translateY(-8px);
}

.kart h3{
    margin-bottom: 15px;
}

.whatsapp-buton {
    position: fixed;
    right: 25px;
    bottom: 25px;

    background: #25d366;
    color: white;

    padding: 15px 22px;
    border-radius: 50px;

    text-decoration: none;
    font-weight: bold;

    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
    transition: 0.3s;
}

.whatsapp-buton:hover {
    transform: scale(1.08);
}

@media (max-width: 768px) {

    header {
        padding: 20px;
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .logo img {
    width: auto;
    height:auto;
}

    nav{
    display: flex;
    gap: 30px;
    margin-left: auto;
}

nav a{
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

    section {
        padding: 50px 20px;
    }

    #anasayfa {
        padding: 100px 20px;
    }

    #anasayfa h2 {
        font-size: 34px;
    }

    #anasayfa p {
        font-size: 17px;
    }

    #hakkimizda,
    #iletisim {
        margin: 20px;
        padding: 30px 20px;
    }

    #hizmetler {
        padding: 50px 20px;
    }

    .kart {
        width: 100%;
        max-width: 350px;
    }

    .whatsapp-buton {
        right: 15px;
        bottom: 15px;
        padding: 13px 18px;
    }
}

.iletisim-bilgileri {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 25px;
}

.iletisim-bilgileri a,
.iletisim-bilgileri p {
    color: #0b3c5d;
    font-size: 18px;
    text-decoration: none;
    font-weight: bold;
}

.iletisim-bilgileri a:hover {
    color: #d6a419;
}

.hero{

    max-width:800px;

    margin:auto;

}

.btn{

    display:inline-block;

    margin-top:30px;

    padding:16px 40px;

    background:#FFD166;

    color:#222;

    border-radius:8px;

    text-decoration:none;

    font-weight:bold;

    transition:.3s;

}

.btn:hover{

    background:white;

    transform:translateY(-4px);

}

.logo{
    display: flex;
    align-items: center;
    margin-right: auto;
}

.logo img{
    display: block;
    width: auto;
    height: 70px;
    max-width: 220px;
    object-fit: contain;
}