* {
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, Helvetica, sans-serif;
}


html {
    scroll-behavior:smooth;
}


body {
    color:#333;
    background:#fff;
}


/* HEADER */

header {

    width:100%;
    padding:20px 8%;
    display:flex;
    justify-content:space-between;
    align-items:center;

    background:#0B1F3A;
    position:sticky;
    top:0;
    z-index:100;

}


.logo img {

    width:140px;
    height:auto;
    display:block;

}



nav a {

    color:white;
    text-decoration:none;
    margin-left:25px;
    font-weight:600;

}


nav a:hover {

    color:#2E8BFF;

}



/* HERO */


.hero {

    height:85vh;

    background:
    linear-gradient(
    rgba(11,31,58,0.65),
    rgba(11,31,58,0.65)
    ),
    url("images/hero.jpg");


    background-size:cover;
    background-position:center;


    display:flex;
    align-items:center;

    padding:0 8%;

}



.hero-text {

    max-width:700px;
    color:white;

}


.hero-text h1 {

    font-size:50px;
    line-height:1.2;
    margin-bottom:20px;

}


.hero-text p {

    font-size:20px;
    line-height:1.7;
    margin-bottom:30px;

}



.hero-text a {

    display:inline-block;

    background:#2E8BFF;
    color:white;

    padding:15px 35px;

    border-radius:30px;

    text-decoration:none;

    font-weight:bold;

}


.hero-text a:hover {

    background:white;
    color:#0B1F3A;

}





/* SECTIONS */


section {

    padding:80px 8%;
    text-align:center;

}



section h2 {

    font-size:36px;
    margin-bottom:30px;
    color:#0B1F3A;

}



section p {

    font-size:18px;
    line-height:1.7;

}




/* ÜRÜNLER */


.urunler {

    display:grid;

    grid-template-columns:repeat(4,1fr);

    gap:25px;

    margin-top:40px;

}



.kart {


    background:white;

    padding:30px;


    border-radius:15px;


    box-shadow:
    0 5px 20px rgba(0,0,0,0.10);


    transition:.3s;


}



.kart:hover {

    transform:translateY(-8px);

}



.kart h3 {

    color:#0066CC;

    margin-bottom:20px;

}



.kart p {

    font-size:16px;

}




.ambalaj {


    margin-top:50px;

    background:#EAF4FF;

    padding:30px;

    border-radius:15px;


}


.ambalaj h3 {

    color:#0B1F3A;

    margin-bottom:15px;

}




/* NEDEN BİZ */


.neden {

    background:#F5F8FC;

}



.avantaj {


    display:flex;

    justify-content:center;

    gap:30px;

    margin-top:40px;

}



.avantaj div {


    background:white;

    padding:30px;

    border-radius:15px;

    width:30%;


    box-shadow:
    0 5px 15px rgba(0,0,0,0.08);


}



.avantaj h3 {

    color:#0066CC;

    margin-bottom:15px;

}




/* FOOTER */


footer {

    background:#0B1F3A;

    color:white;

    text-align:center;

    padding:25px;

}





/* MOBİL */


@media(max-width:900px){


header {

    flex-direction:column;
    gap:20px;

}



nav a {

    margin:0 8px;

}



.hero-text h1 {

    font-size:34px;

}



.urunler {

    grid-template-columns:1fr;

}



.avantaj {

    flex-direction:column;

}



.avantaj div {

    width:100%;

}


}