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

body{
  height: 100vh;
}

.nav{
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center; 
  padding: 20px 50px;
  background: rgba(0, 0, 0, 0.2); 
  backdrop-filter: blur(10px); 
  z-index: 1000;
}

.logo{
  position: absolute;
  font-size: 26px;
  color: white;
  font-weight: 700;
  left: 50px;
  letter-spacing: 2px;
}

.logo span{
  color: #8B5CF6; 
}


.menü{
  display: flex;
  gap: 50px; 
  list-style: none;
}

.menü li a{
  color: #ffffff;
  position: relative;
  font-weight: 500;
  font-size: 18px;
  text-decoration: none;
  letter-spacing: 1px;
  transition: 0.3s;
  padding-bottom: 8px;
}

.menü li a::after{
  content: '';
  position: absolute;
  width: 0;
  height: 1px;
  bottom: 0;
  left: 0;
  background-color: #b8b8ff; 
  transition: 0.4s ease;
}

.menü li a:hover::after{
  width: 100%; 
}

.menü li a:hover{
  font-weight: bold;
  color: #b8b8ff;
}

#bgvideo{
  top: 0;
  left: 0;
  position: fixed;
  width: 100%;
  height: 100%;
  z-index: -1;
  object-fit: cover;
}

.yazi{
  min-height: 100vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: white;
  gap: 30px;
  padding-top: 70px;
}

h1{
  font-size: 56px;
  font-weight: 560;
  letter-spacing: 1px; 
  max-width: 1200px;
}

.yazi h1 span{
  color: #a29bfe;
}

p{
  font-size: 24px;
  font-weight: 300px;
  text-transform: uppercase; 
  opacity: 0.8;               
}

.buton{
  margin-top: 30px;
}

.btn-uzay{
  position: relative;
  display: inline-block;
  top: -30px;         
  left: -30px;
  padding: 14px 36px;
  font-size: 16px;
  font-weight: bold;
  color: #fff;
  text-decoration: none;
  border-radius: 30px;
  background: linear-gradient(90deg, #BB86FC, #0072ff);
  box-shadow: 0 0 20px rgba(0, 198, 255, 0.6);
}

.btn-uzay:hover{
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(0, 198, 255, 0.9);
}






/* 📱 MOBİL DÜZEN (SADECE TELEFON) */
@media (max-width: 768px) {

  body {
    overflow-x: hidden;
  }

  .nav {
    flex-direction: column;
    padding: 15px 20px;
  }

  .logo {
    position: static; 
    margin-bottom: 10px;
  }

  .menü {
    flex-direction: column;
    gap: 15px;
  }

  .menü li a {
    font-size: 16px;
  }

  .yazi {
    padding: 0 20px;
  }

  h1 {
    font-size: 32px;
  }

  p {
    font-size: 16px;
  }

  #bgvideo {
    width: 100%;
    height: 100%;
  }

}