:root {
  --zemin: #ffffff;
  --yazi: #081a28;
  --ikincil: #566876;
  --cizgi: #dfe4e8;
  --yuzey: #f1f4f6;
  --vurgu: #f07736;
  --vurgu-yazi: #081a28;
  --mavi: #004b7d;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --zemin: #081a28;
    --yazi: #ffffff;
    --ikincil: #9fb1bf;
    --cizgi: #1f3546;
    --yuzey: #102636;
    --mavi: #84bfe6;
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--zemin);
  color: var(--yazi);
  font: 500 15px/1.4 Montserrat, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
button, input { font: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; cursor: pointer; }

/* Giriş ve kişi seçimi */
.giris { min-height: 100dvh; display: flex; flex-direction: column; justify-content: center; max-width: 360px; margin: 0 auto; padding: 24px 16px; }
.giris h1 { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 28px; }
.giris label { display: block; font-size: 14px; color: var(--ikincil); margin-bottom: 14px; }
.giris input { display: block; width: 100%; margin-top: 6px; padding: 13px 14px; font-size: 16px; border: 1px solid var(--cizgi); border-radius: 10px; background: var(--zemin); }
.giris .gizli { -webkit-text-security: disc; }
.giris input:focus { outline: 2px solid var(--mavi); outline-offset: -1px; }
.giris .hata { color: var(--vurgu); font-size: 14px; min-height: 20px; margin: 0 0 8px; }
.giris .dugme { width: 100%; }
.kisi { display: block; width: 100%; padding: 15px 16px; font-size: 16px; font-weight: 600; text-align: left; border: 1px solid var(--cizgi); border-radius: 10px; margin-bottom: 18px; }
.kisi:active { background: var(--yuzey); }
.diger { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.diger input { margin: 0; }
.diger .dugme { width: auto; padding: 0 18px; height: auto; }

/* Üst bölüm */
.ust { position: sticky; top: 0; z-index: 2; background: var(--zemin); border-bottom: 1px solid var(--cizgi); }
.ust-ic { max-width: 980px; margin: 0 auto; padding: 10px 16px 0; }
.ust-satir { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.marka-grup { display: flex; align-items: baseline; gap: 12px; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.marka-grup::-webkit-scrollbar { display: none; }
.marka { font-size: 16px; font-weight: 700; letter-spacing: -0.02em; }
.set { font-size: 14px; font-weight: 600; color: var(--ikincil); white-space: nowrap; }
.set[aria-current="true"] { color: var(--mavi); }
.kim-dugme { flex: none; max-width: 40%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; color: var(--ikincil); padding: 6px 0 6px 12px; }
.sekmeler { display: flex; align-items: center; gap: 18px; margin-top: 4px; }
.sekme { padding: 8px 0 10px; font-size: 15px; font-weight: 600; color: var(--ikincil); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.sekme[aria-selected="true"] { color: var(--yazi); border-color: var(--vurgu); }
.ilerleme { margin-left: auto; font-size: 13px; color: var(--ikincil); font-variant-numeric: tabular-nums; white-space: nowrap; }

main { max-width: 980px; margin: 0 auto; padding: 16px 0 40px; }
.baslik { padding: 0 16px; margin-bottom: 12px; }
.ust-etiket { font-size: 14px; color: var(--ikincil); margin: 0 0 2px; }
.baslik h2 { font-size: 27px; font-weight: 700; line-height: 1.15; letter-spacing: -0.025em; margin: 0; }
.seri { font-size: 15px; color: var(--mavi); font-weight: 600; margin: 4px 0 0; }
.geri { font-size: 15px; font-weight: 600; color: var(--mavi); padding: 0 16px 12px; display: block; }
.serit { display: flex; align-items: center; justify-content: space-between; gap: 12px; width: calc(100% - 32px); margin: 0 16px 12px; padding: 10px 14px; font-size: 14px; font-weight: 600; text-align: left; border-radius: 10px; background: var(--yuzey); }
.serit small { font: inherit; font-weight: 500; color: var(--ikincil); flex: none; }
.serit button.yazi { color: var(--mavi); font-weight: 600; flex: none; }

/* Kareler: taşma yok, her ekranda düzen aynı mantıkta */
.kareler { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 12px; padding: 0 16px; }
.kare { display: flex; flex-direction: column; min-width: 0; }
.kare img { display: block; width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: cover; border-radius: 10px; background: var(--yuzey) center / cover no-repeat; }
.kare-bilgi { display: flex; justify-content: space-between; gap: 8px; margin-top: 8px; font-size: 14px; font-weight: 600; overflow-wrap: anywhere; }
.kare-bilgi .sira { color: var(--ikincil); font-weight: 500; font-variant-numeric: tabular-nums; flex: none; margin-left: auto; }
.kredi { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 2px 10px; font-size: 13px; color: var(--ikincil); margin-top: 2px; overflow-wrap: anywhere; }
.kredi button { font-size: 13px; font-weight: 600; color: var(--mavi); }
.islemler { display: grid; grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); gap: 6px; margin-top: auto; padding-top: 10px; }
.dugme { height: 44px; min-width: 0; border-radius: 10px; font-size: 15px; font-weight: 600; background: var(--yuzey); }
.dugme.ana { background: var(--vurgu); color: var(--vurgu-yazi); }
.dugme.bitti { background: transparent; color: var(--mavi); box-shadow: inset 0 0 0 1.5px currentColor; }
.iz { font-size: 12px; color: var(--ikincil); margin: 4px 0 0; }

/* Takvim */
.takvim { max-width: 640px; }
.ay { font-size: 15px; font-weight: 700; padding: 18px 16px 8px; margin: 0; }
.ay:first-child { padding-top: 0; }
.satir { display: grid; grid-template-columns: 46px minmax(0, 1fr) auto; align-items: center; gap: 12px; width: 100%; padding: 10px 16px; text-align: left; border-top: 1px solid var(--cizgi); }
.satir:active { background: var(--yuzey); }
.satir.sirada { background: var(--yuzey); }
.gun-no { font-size: 23px; font-weight: 700; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; line-height: 1.15; }
.gun-no small { display: block; font-size: 12px; font-weight: 500; letter-spacing: 0; color: var(--ikincil); }
.satir.sirada .gun-no { color: var(--mavi); }
.kucukler { display: flex; gap: 4px; min-width: 0; }
.kucukler img { width: 34px; height: 60px; object-fit: cover; border-radius: 4px; background: var(--yuzey); }
.kutular { display: flex; gap: 4px; }
.kutu { width: 24px; height: 24px; display: grid; place-items: center; font-size: 12px; font-weight: 700; color: var(--ikincil); border: 1.5px solid var(--cizgi); border-radius: 5px; font-variant-numeric: tabular-nums; }
.kutu.dolu { background: var(--vurgu); border-color: var(--vurgu); color: var(--vurgu-yazi); }
.gecikti .kutu:not(.dolu) { background: var(--mavi); border-color: var(--mavi); color: var(--zemin); }

#bildirim { position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom)); max-width: calc(100vw - 32px); transform: translate(-50%, 16px); padding: 10px 14px; font-size: 14px; border-radius: 10px; background: var(--yazi); color: var(--zemin); opacity: 0; pointer-events: none; transition: opacity .15s, transform .15s; }
#bildirim.acik { opacity: 1; transform: translate(-50%, 0); }
.bos { padding: 40px 16px; color: var(--ikincil); }

/* Kullanım */
.rehber { max-width: 560px; }
.rehber .baslik { margin-bottom: 4px; }
.rehber h3 { font-size: 15px; font-weight: 700; margin: 22px 16px 10px; }
.secim { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin: 0 16px; padding: 4px; border-radius: 10px; background: var(--yuzey); }
.secim button { height: 38px; font-size: 14px; font-weight: 600; color: var(--ikincil); border-radius: 7px; }
.secim button[aria-pressed="true"] { background: var(--zemin); color: var(--yazi); }
.adimlar { list-style: none; margin: 8px 0 0; padding: 0; }
.adimlar li { display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 12px; padding: 11px 16px; font-size: 14px; color: var(--ikincil); border-top: 1px solid var(--cizgi); }
.adimlar li:first-child { border-top: 0; }
.adimlar b { color: var(--yazi); font-weight: 600; font-size: 15px; }
.adim-no { width: 24px; height: 24px; display: grid; place-items: center; font-size: 12px; font-weight: 700; color: var(--vurgu-yazi); background: var(--vurgu); border-radius: 5px; }
.not { margin: 8px 16px 0; font-size: 13px; color: var(--ikincil); }
.dugme.tam { display: block; width: calc(100% - 32px); margin: 12px 16px 0; }
.anahtar { list-style: none; margin: 0; padding: 0 16px; font-size: 14px; }
.anahtar li { display: flex; align-items: center; gap: 12px; padding: 6px 0; }

@media (min-width: 640px) {
  .kareler { grid-template-columns: repeat(3, minmax(0, 240px)); }
}