/* YazıTara sitesi — tek dosyalık, bağımlılıksız stil. */
:root {
  --mavi: #2f6fed;
  --mavi-koyu: #2358d8;
  --zemin: #f6f7fb;
  --kart: #ffffff;
  --metin: #1c2333;
  --soluk: #5b6474;
  --cizgi: #e3e7ef;
}
@media (prefers-color-scheme: dark) {
  :root {
    --zemin: #0e1116;
    --kart: #161b22;
    --metin: #e6edf3;
    --soluk: #9aa6b5;
    --cizgi: #2a323d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--zemin);
  color: var(--metin);
  line-height: 1.6;
}
a { color: var(--mavi); text-decoration: none; }
a:hover { text-decoration: underline; }

.ust {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 860px; margin: 0 auto; padding: 18px 20px;
}
.marka {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 19px; color: var(--metin);
}
.marka:hover { text-decoration: none; }
.ust nav { display: flex; gap: 18px; font-weight: 600; }

main { max-width: 860px; margin: 0 auto; padding: 0 20px 40px; }

.kahraman { text-align: center; padding: 48px 0 36px; }
.buyuk-ikon { border-radius: 22px; box-shadow: 0 10px 30px rgba(47,111,237,.35); }
.kahraman h1 { font-size: clamp(28px, 5vw, 40px); margin: 22px 0 10px; letter-spacing: -0.5px; }
.alt-baslik { font-size: 18px; color: var(--soluk); max-width: 560px; margin: 0 auto; }
.rozetler { margin-top: 18px; display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
.rozet {
  background: var(--kart); border: 1px solid var(--cizgi);
  padding: 6px 14px; border-radius: 999px; font-size: 14px; font-weight: 600;
}

.ozellikler {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px; margin-top: 10px;
}
.kart {
  background: var(--kart); border: 1px solid var(--cizgi);
  border-radius: 16px; padding: 20px;
}
.kart h3 { margin: 0 0 8px; font-size: 17px; }
.kart p { margin: 0; color: var(--soluk); font-size: 15px; }

.icerik { max-width: 720px; margin: 0 auto; padding: 24px 0; }
.icerik h1 { font-size: 30px; letter-spacing: -0.5px; }
.icerik h2 { font-size: 20px; margin-top: 32px; }
.icerik p, .icerik li { color: var(--soluk); font-size: 16px; }
.icerik strong { color: var(--metin); }
.guncelleme { font-size: 14px; color: var(--soluk); }

.sss details {
  background: var(--kart); border: 1px solid var(--cizgi);
  border-radius: 12px; padding: 14px 18px; margin-bottom: 10px;
}
.sss summary { cursor: pointer; font-weight: 600; color: var(--metin); }
.sss p { margin: 10px 0 0; }

.iletisim-kutu {
  background: var(--kart); border: 1px solid var(--cizgi);
  border-radius: 16px; padding: 22px; margin-top: 28px; text-align: center;
}

footer {
  border-top: 1px solid var(--cizgi);
  text-align: center; padding: 22px; color: var(--soluk); font-size: 14px;
}