*{
  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;
}

#arka-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  object-fit: cover;
  z-index: -999;
  filter: blur(1px) brightness(0.6); 
}

.iletisim-alani {
  height: calc(100vh - 65px); 
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 65px; 
  position: relative;
  z-index: 1;
}

.iletisim-kutu {
  width: 420px;
  padding: 35px;
  text-align: center;
  background: rgba(0, 0, 0, 0.85); 
  border: 1px solid rgba(0, 243, 255, 0.2);
  box-shadow: 0 0 20px 8px rgba(173, 216, 230, 0.5);
}

.iletisim-kutu h2 {
  color: #b8b8ff; 
  text-shadow:  0 0 15px rgba(0, 242, 255, 0.2); 
  margin-bottom: 10px;
}

.iletisim-kutu p {
  color: #fff;
  margin-bottom: 25px;
}

input,
textarea {
  width: 100%;
  padding: 12px;
  margin-bottom: 15px;
  background: transparent;
  border: 1px solid #444;
  border-radius: 6px;
  color: #fff;
}

textarea{
  resize: none;
}

input:focus,
textarea:focus {
  border-color: #b8b8ff;
  outline: none;
}

button {
  width: 100%;
  padding: 12px;
  background: transparent;
  border: 2px solid #b8b8ff;
  color: #b8b8ff;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #b8b8ff;
  color: #000;
}




/* ===================== */
/* MOBİL UYUMLULUK */
/* ===================== */
@media (max-width: 768px) {

  /* body scroll geri gelsin */
  body {
    overflow-y: auto;
  }

  /* NAVBAR */
  .nav {
    flex-direction: column;
    height: auto;
    padding: 10px;
  }

  .logo {
    position: static;
    margin-bottom: 8px;
  }

  .menü {
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
  }

  .menü a {
    font-size: 14px;
  }

  /* VIDEO */
  .arka-video {
    object-fit: cover;
  }

  /* İLETİŞİM ALANI */
  .iletisim-alani {
    height: auto;
    min-height: 100vh;
    padding: 120px 20px 40px;
    margin-top: 0;
  }

  .iletisim-kutu {
    width: 100%;
    max-width: 360px;
    padding: 25px;
  }

  .iletisim-kutu h2 {
    font-size: 24px;
  }

  .iletisim-kutu p {
    font-size: 14px;
  }

  input,
  textarea,
  button {
    font-size: 14px;
  }
}