/*
  bitig - tanitim sitesi stilleri.

  DEGERLER UYGULAMANIN TASARIM SOZLESMESINDEN KOPYALANDI, uydurulmadi:
  renkler `Yesim / ColorScheme` tablosundan (notr yuzey, acik ve koyu),
  tipografi `TextTheme / Turkce okunurluk` sayfasindan, olculer `Olcu
  sozlesmesi` bloguna gore (bosluk 4/8/12/16/24/32/48, kose 0/4/8/12/16/24).

  Site uygulamanin ICINDE degil ama ayni markanin yuzu; farkli gorunmesi
  icin bir sebep yok. Uygulamada tema kullanicinin elinde degisiyor,
  burada ise sabit: ziyaretcinin bir tercihi yok, yalnizca cihazinin
  acik/koyu ayari var ve ona uyuluyor.
*/

:root {
  --surface: #FFF8F4;
  --surface-container: #F6ECE4;
  --surface-container-low: #FCF2EA;
  --on-surface: #1F1B16;
  --on-surface-variant: #4F4539;
  --outline: #817567;
  --outline-variant: #84786A;
  --primary: #286A49;
  --on-primary: #FFFFFF;
  --primary-container: #ADF2C7;
  --on-primary-container: #055232;

  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-12: 48px;

  --r-s: 4px;
  --r-m: 12px;
  --r-l: 24px;
  --r-full: 999px;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface: #16130E;
    --surface-container: #231F1A;
    --surface-container-low: #1F1B16;
    --on-surface: #EAE1D9;
    --on-surface-variant: #D3C4B4;
    --outline: #9B8F80;
    --outline-variant: #8E8274;
    --primary: #92D5AC;
    --on-primary: #003921;
    --primary-container: #055232;
    --on-primary-container: #ADF2C7;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--surface);
  color: var(--on-surface);
  font-family: "Noto Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.5px;
}

h1, h2, h3 {
  font-family: "Noto Serif", Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: 0;
  margin: 0;
}

/* Olcek `TextTheme` yuvalarindan: displaySmall / headlineMedium /
   headlineSmall. Mobilde bir basamak kuculuyor. */
h1 { font-size: 36px; line-height: 1.222; }
h2 { font-size: 28px; line-height: 1.286; margin-top: var(--sp-12); }
h3 { font-size: 24px; line-height: 1.333; }

@media (max-width: 600px) {
  h1 { font-size: 28px; }
  h2 { font-size: 24px; }
  h3 { font-size: 22px; }
}

p { margin: 0 0 var(--sp-4); }
a { color: var(--primary); }

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  /* Teslimdeki yan bosluk 24 dp. */
  padding: 0 var(--sp-6);
}

/* --- Ust cubuk ----------------------------------------------------------- */

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) 0;
}

.wordmark {
  font-family: "Noto Serif", Georgia, serif;
  font-size: 22px;
  color: var(--on-surface);
  text-decoration: none;
}

nav a {
  margin-left: var(--sp-4);
  font-size: 14px;
  text-decoration: none;
}

/* --- Giris --------------------------------------------------------------- */

.hero { padding: var(--sp-12) 0; }
.hero .lede {
  font-size: 18px;
  color: var(--on-surface-variant);
  max-width: 34rem;
}

.mark {
  width: 48px;
  height: 48px;
  margin-bottom: var(--sp-6);
  color: var(--primary);
}

/* --- Dugmeler ------------------------------------------------------------ */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-8);
}

.btn {
  display: inline-block;
  /* Dokunma hedefi en az 48 dp. */
  min-height: 48px;
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--r-full);
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  line-height: 24px;
}

.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-outline {
  border: 1px solid var(--outline);
  color: var(--on-surface);
}

/* Magaza baglantilari yayina kadar kapali; tiklanabilir gorunmemeli. */
.btn[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

/* --- Ozellikler ---------------------------------------------------------- */

.features {
  display: grid;
  gap: var(--sp-4);
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  margin-top: var(--sp-6);
}

.card {
  background: var(--surface-container-low);
  border-radius: var(--r-m);
  padding: var(--sp-4);
}
.card h3 { font-size: 22px; margin-bottom: var(--sp-2); }
.card p { color: var(--on-surface-variant); font-size: 14px; margin: 0; }

/* --- Fiyat --------------------------------------------------------------- */

.price {
  background: var(--surface-container);
  border-radius: var(--r-l);
  padding: var(--sp-6);
  margin-top: var(--sp-6);
}
.price ul { margin: var(--sp-4) 0 0; padding-left: var(--sp-6); }
.price li { margin-bottom: var(--sp-2); }

/* --- Hukuki metinler ----------------------------------------------------- */

.legal { padding: var(--sp-8) 0 var(--sp-12); }
.legal h2 { margin-top: var(--sp-8); }
.legal h3 { margin-top: var(--sp-6); font-size: 22px; }
.legal p, .legal li { color: var(--on-surface-variant); }
.legal .updated { font-size: 14px; }

.notice {
  border: 1px solid var(--outline-variant);
  border-radius: var(--r-m);
  padding: var(--sp-4);
  margin: var(--sp-6) 0;
  font-size: 14px;
}

/* --- Alt bilgi ----------------------------------------------------------- */

footer {
  border-top: 1px solid var(--outline-variant);
  margin-top: var(--sp-12);
  padding: var(--sp-6) 0 var(--sp-12);
  font-size: 14px;
  color: var(--on-surface-variant);
}
footer a { margin-right: var(--sp-4); }