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

html, body {
  height: 100%;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  background: #fdfdfd;
  color: #333;
}

/* Flex yapısı: sticky footer */
body {
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  background: #2c3e50;
  color: #fff;
  padding: 1rem 2rem;
}

header .container {
  max-width: 1100px;   /* içerik en fazla 1100px genişler */
  margin: 0 auto;      /* ortalar */
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header h1 a {
  color: #fff;
  text-decoration: none;
}

nav a {
  color: #fff;
  text-decoration: none;
  margin-left: 15px;
}

nav a.active {
  font-weight: bold;
  text-decoration: underline;
}

/* İçerik */
main {
  flex: 1; /* Boş alanı doldurur, footer’ı aşağı iter */
  padding: 2rem;
  max-width: 800px;
  margin: auto;
}

h1, h2, h3 {
  color: #2c3e50;
  margin-bottom: 0.8rem;
}

/* Buton */
.btn {
  display: inline-block;
  background: #3498db;
  color: #fff;
  padding: 10px 20px;
  margin-top: 1rem;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.2s ease;
}

.btn:hover {
  background: #2980b9;
}

/* Footer */
footer {
  background: #2c3e50;
  color: #fff;
  text-align: center;
  padding: 1rem;
  margin-top: auto; /* Footer her zaman alta yapışır */
}

/* İletişim formu */
.contact-form {
  display: grid;
  gap: 10px;
  margin-top: 1rem;
}

.contact-form label {
  font-weight: bold;
}

.contact-form input,
.contact-form textarea,
.contact-form button {
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form button {
  background: #3498db;
  color: #fff;
  border: none;
  cursor: pointer;
}

.contact-form button:hover {
  background: #2980b9;
}

/* Mobil uyum */
@media (max-width: 600px) {
  header {
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    margin-top: 10px;
  }

  nav a {
    margin: 0 10px 0 0;
  }

  main {
    padding: 1rem;
  }
}