body { min-height: 100vh; display: flex; flex-direction: column; }
.ust-serit { background: var(--yuzey); border-bottom: 1px solid var(--cizgi); min-height: 56px; padding: 0 40px; display: flex; align-items: center; }
.ust-serit nav { display: flex; gap: 24px; }
.ust-serit a { color: var(--ikincil); font-weight: 500; text-decoration: none; padding: 4px 0; }
.ust-serit a:hover { color: var(--murekkep); }
.ust-serit a[aria-current] { color: var(--murekkep); font-weight: 600; border-bottom: 2px solid var(--vurgu); }
.sayfa { flex: 1; width: 100%; max-width: 1180px; margin: 0 auto; padding: 48px 40px 64px; }
.ana-icerik { flex: 1; width: 100%; }
.alt-serit { background: var(--yuzey); border-top: 1px solid var(--cizgi); padding: 6px 24px; display: flex; justify-content: center; }
h1 { font-size: 40px; line-height: 1.15; font-weight: 700; letter-spacing: -0.5px; }
.bos, .kaynak-not { color: var(--ikincil); }
.kaynak-not { margin-top: 28px; font-size: 13px; }
.meta { color: var(--ikincil); font-size: 14px; }
.rozet { display: inline-block; font-size: 13px; font-weight: 500; color: var(--uyari); background: var(--uyari-z); padding: 3px 10px; border-radius: 99px; }

/* Ders kartları */
.kart-izgara { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 24px; }
.kart { display: flex; flex-direction: column; background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--kose-buyuk); overflow: hidden; color: inherit; text-decoration: none; transition: border-color .15s; }
.kart:hover { color: inherit; border-color: var(--vurgu); }
.kart-gorsel { position: relative; aspect-ratio: 16 / 10; background: var(--sahne); overflow: hidden; }
.kart-gorsel img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .35s cubic-bezier(.16, 1, .3, 1); }
.kart:hover .kart-gorsel img { transform: scale(1.04); }
.kart-tur { position: absolute; left: 12px; top: 12px; background: var(--yuzey); color: var(--murekkep); border-radius: 4px; padding: 2px 8px; font-size: 13px; font-weight: 500; }
.kart-metin { flex: 1; padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.kart-metin h3 { font-size: 20px; line-height: 1.25; font-weight: 600; }
.kart-ozet { font-size: 15px; line-height: 1.45; }
.kart-metin .rozet { margin-top: auto; }
.kart-metin .meta { margin-bottom: 8px; }

/* Katalog */
.katalog-baslik { margin-bottom: 20px; }
.filtre { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.filtre a { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 14px; background: var(--yuzey); border: 1px solid var(--cerceve); border-radius: 99px; color: var(--murekkep); font-weight: 500; font-size: 15px; text-decoration: none; }
.filtre a:hover { background: var(--secili); color: var(--murekkep); }
.filtre a span { color: var(--ikincil); font-size: 13px; font-variant-numeric: tabular-nums; }
.filtre a[aria-current] { background: var(--murekkep); border-color: var(--murekkep); color: #fff; }
.filtre a[aria-current] span { color: #C9D6DE; }

/* Ders detayı */
.detay { display: flex; flex-wrap: wrap; gap: 40px; }
.detay-gorsel { flex: 1 1 420px; min-height: 480px; background: var(--sahne); border-radius: var(--kose-buyuk); overflow: hidden; display: flex; align-items: center; justify-content: center; }
.detay-gorsel img { display: block; width: 100%; height: auto; }
.detay-metin { flex: 1 1 420px; min-width: 0; display: flex; flex-direction: column; align-items: flex-start; }
.yol { font-size: 14px; color: var(--ikincil); margin-bottom: 12px; }
.detay-metin h1 { margin-bottom: 8px; }
.detay-metin .meta { margin-bottom: 16px; }
.ozet { font-size: 18px; line-height: 1.45; margin-bottom: 24px; }
.detay-metin h2 { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.kazanim { margin: 0 0 28px; padding-left: 20px; display: flex; flex-direction: column; gap: 4px; }
.uyari-kutu { margin-top: 28px; width: 100%; background: var(--uyari-z); color: var(--uyari); border-radius: var(--kose); padding: 12px 14px; font-size: 14px; }
.uyari-kutu strong { display: block; font-weight: 600; margin-bottom: 4px; }
.atif { margin-top: 14px; font-size: 13px; color: var(--ikincil); }
.kaynaklar { margin-top: 20px; font-size: 13px; color: var(--ikincil); }
.kaynaklar h2 { font-size: 14px; margin-bottom: 4px; color: var(--murekkep); }
.kaynaklar ul { margin: 0 0 6px; padding-left: 18px; }

.hata { max-width: 640px; }
.hata h1 { font-size: 32px; line-height: 1.2; margin-bottom: 10px; }
.hata p { color: var(--ikincil); margin-bottom: 20px; }

/* Ana sayfa: kaydırdıkça kamera modeller arasında gezer */
body.ana .ust-serit { position: absolute; top: 0; left: 0; right: 0; z-index: 4; background: transparent; border-bottom: 0; }
.yolculuk { position: relative; background: var(--sahne); }
.yapiskan-kap { display: none; }
.kap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 40px; }
.durak-giris { padding: 96px 0 56px; }
.durak-giris h1 { font-size: clamp(42px, 5.2vw, 76px); line-height: 1.04; letter-spacing: -1.6px; max-width: 12.5em; }
.giris-metin { margin: 20px 0 28px; max-width: 30em; font-size: clamp(17px, 1.5vw, 20px); line-height: 1.45; }
.dugme-buyuk { min-height: 52px; padding: 0 28px; font-size: 17px; }
.kaydir { display: none; }
.durak { padding: 16px 0; }
.durak-ic { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 40px; display: flex; }
.durak-kart { width: min(440px, 100%); background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--kose-buyuk); padding: 26px 28px; }
.durak-kart h2 { margin: 6px 0 10px; font-size: 32px; line-height: 1.12; font-weight: 700; letter-spacing: -0.4px; }
.durak-ozet { font-size: 16px; line-height: 1.5; }
.durak-yedek { display: block; width: 100%; height: auto; margin-top: 14px; border-radius: var(--kose); background: var(--sahne); }
.durak-olcum { display: none; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 14px; margin: 16px 0 0; padding: 12px 0; border-top: 1px solid var(--cizgi); border-bottom: 1px solid var(--cizgi); }
.durak-olcum dt { font-size: 12.5px; line-height: 1.3; color: var(--ikincil); }
.durak-olcum dd { margin: 2px 0 0; font-size: 17px; line-height: 1.25; font-weight: 600; font-variant-numeric: tabular-nums; }
.durak-olcum .vurgulu dd { color: var(--vurgu); }
.durak-eylem { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.durak-not { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin-top: 12px; font-size: 12.5px; color: var(--ikincil); }
.durak-not:empty { display: none; }
.serit { display: none; }

/* 3B sahne çalışınca */
.yolculuk.canli .yapiskan-kap { display: block; position: absolute; inset: 0; }
.yapiskan { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; }
#vitrinSahne { position: absolute; inset: 0; width: 100%; height: 100%; display: block; opacity: 0; transition: opacity .6s; touch-action: pan-y; cursor: grab; }
#vitrinSahne.tutuyor { cursor: grabbing; }
#vitrinEtiket { position: absolute; inset: 0; overflow: hidden; pointer-events: none; opacity: 0; transition: opacity .25s; }
.yolculuk.hazir #vitrinSahne { opacity: 1; }
.vitrin-poster { position: absolute; right: 0; top: 24%; width: 68%; height: auto; max-height: 70%; object-fit: contain; transition: opacity .6s; pointer-events: none; }
.yolculuk.hazir .vitrin-poster { opacity: 0; }
.yolculuk.canli .duraklar { position: relative; z-index: 1; pointer-events: none; }
.yolculuk.canli .kap > *, .yolculuk.canli .durak-kart { pointer-events: auto; }
.yolculuk.canli .kap h1, .yolculuk.canli .giris-metin, .yolculuk.canli .kaydir { pointer-events: none; }
.yolculuk.canli .durak-giris { min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; padding: clamp(84px, 14vh, 136px) 0 76px; }
.yolculuk.canli .durak-giris .kap { flex: 1; display: flex; flex-direction: column; align-items: flex-start; }
.yolculuk.canli .kaydir { display: block; margin-top: auto; transition: opacity .25s; }
.yolculuk.kaydirildi .kaydir { opacity: 0; }
html:has(body.ana) { scroll-behavior: smooth; }
.yolculuk.canli .durak { min-height: 175vh; padding: 0; display: flex; }
.yolculuk.canli .durak-ic { min-height: 100%; align-items: flex-start; }
.yolculuk.canli .durak.sag .durak-ic { justify-content: flex-end; }
.yolculuk.canli .durak-kart { position: sticky; top: max(24px, calc(50vh - 240px)); }
.yolculuk.canli .durak-yedek { display: none; }
.yolculuk.canli .durak-olcum { display: grid; }
.yolculuk.canli .serit { position: sticky; bottom: 0; z-index: 2; display: flex; background: var(--yuzey); border-top: 1px solid var(--cizgi); }
.serit a { flex: 1; min-height: 52px; display: flex; align-items: center; justify-content: center; color: var(--ikincil); font-size: 14px; font-weight: 500; text-decoration: none; white-space: nowrap; }
.serit a + a { border-left: 1px solid var(--cizgi); }
.serit a:hover { background: var(--zemin); color: var(--murekkep); }
.serit a[aria-current] { color: var(--murekkep); font-weight: 600; }
#seritIlerleme { position: absolute; left: 0; top: -1px; width: 100%; height: 3px; background: var(--vurgu); transform-origin: 0 50%; transform: scaleX(0); }

.ana-dersler { background: var(--zemin); width: 100%; max-width: 1260px; margin: 0 auto; padding: 56px 40px 64px; }
.bolum-ust { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 24px; margin-bottom: 20px; }
.bolum-ust h2 { font-size: 32px; line-height: 1.2; font-weight: 700; letter-spacing: -0.4px; }
.bolum-ust a { font-weight: 500; }

@media (max-width: 760px) {
  .ust-serit { padding: 0 16px; min-height: 52px; }
  .sayfa { padding: 20px 16px 24px; }
  h1 { font-size: 30px; letter-spacing: -0.3px; }
  .katalog-baslik { margin-bottom: 14px; }
  .filtre { flex-wrap: nowrap; overflow-x: auto; margin: 0 -16px 20px; padding: 0 16px 4px; scrollbar-width: none; }
  .filtre a { flex: none; min-height: 44px; }
  .kart-gorsel { aspect-ratio: 16 / 9; }
  .detay { gap: 20px; }
  .detay-gorsel { flex-basis: 100%; min-height: 0; }
  .detay-metin { flex-basis: 100%; }
  .powered { font-size: 13px; }
  .powered img { height: 20px; }

  .kap, .durak-ic { padding: 0 16px; }
  .durak-giris { padding: 72px 0 32px; }
  .durak-giris h1 { font-size: clamp(34px, 10vw, 44px); letter-spacing: -0.8px; }
  .giris-metin { margin: 12px 0 16px; font-size: 16px; }
  .dugme-buyuk { min-height: 48px; font-size: 16px; }
  .yolculuk.canli .durak-giris { padding: 68px 0 20px; }
  .yolculuk.canli .durak { min-height: 150vh; }
  .yolculuk.canli .durak-ic { align-items: flex-end; }
  .yolculuk.canli .durak.sag .durak-ic { justify-content: flex-start; }
  .yolculuk.canli .durak-kart { width: 100%; top: auto; bottom: 12px; padding: 14px 16px; }
  .yolculuk.canli .durak-ozet { display: none; }
  .durak-kart h2 { font-size: 24px; margin: 4px 0 6px; }
  .durak-olcum { margin-top: 8px; padding: 8px 0; }
  .durak-olcum dd { font-size: 15px; }
  .durak-eylem { margin-top: 10px; }
  .durak-eylem a { flex: 1 1 auto; }
  .durak-not { margin-top: 8px; font-size: 11.5px; }
  .yolculuk.canli .serit { display: none; }
  .ana-dersler { padding: 36px 16px 40px; }
  .bolum-ust h2 { font-size: 26px; }
}
@media (hover: none) { #vitrinSahne { cursor: auto; } }
@media (prefers-reduced-motion: reduce) { html:has(body.ana) { scroll-behavior: auto; } }