body {
  font-family: 'Segoe UI', sans-serif;
  line-height: 1.6;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}
header {
  background: #3e64ff;
  color: white;
  padding: 35px 20px; /* Yüksekliği artırdık, logoya uygun */
  text-align: center;
  position: relative; /* Logo'nun absolute konumlanması için eklendi */
}

.header-logo {
  position: absolute;
  top: 15px;
  left: 15px;
  height: 100px; /* 2 kat büyük, contact_en.html ile aynı */
  width: auto;
  object-fit: contain;
}
nav {
  text-align: center;
  margin: 20px 0;
}
nav a {
  text-decoration: none;
  margin: 0 15px;
  color: #3e64ff;
  font-weight: bold;
}
section {
  padding: 30px 20px;
  max-width: 900px;
  margin: auto;
  background: white;
  margin-bottom: 20px;
  border-radius: 8px;
}
footer {
  text-align: center;
  padding: 20px;
  background: #3e64ff;
  color: white;
}
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #ff914d;
  color: white;
  text-decoration: none;
  border-radius: 6px;
  margin-top: 10px;
}
.lang-switch {
  position: absolute;
  top: 10px;
  right: 20px;
}
img {
  display: block;
  margin: 40px auto 0 auto;
  max-width: 300px;
  width: 100%;
  height: auto;
}