/* ============================================================
   GeoSaha — Kurumsal site düzeni (geosaha.com)
   Yalnızca bu sayfaya özgü yerleşim. Renk yalnızca temel.css simgeleriyle; yeni renk yok (standartlar/arayuz.md 3. bölüm).
   Bileşen sınıfları (.btn, .card, .badge, .chip, .kicker, .h2, .h3, .prose) temel.css ve ekler.css'ten gelir.
   Kırılımlar: 1440px masaüstü ve 390px telefon kontrol edilir; ara kırılımlar 1000px ve 720px.
   ============================================================ */

html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body { background: var(--bg); color: var(--text); overflow-x: hidden; }
main { display: block; }

.ikon-tanim { position: absolute; width: 0; height: 0; overflow: hidden; }
.ik { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }

.kap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 720px) { .kap { padding: 0 16px; } }

/* ---------- Üst çubuk ---------- */
.ust {
  position: sticky; top: 0; z-index: 10;
  height: 64px;
  background: color-mix(in oklch, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.ust-ic { height: 100%; display: flex; align-items: center; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 11px; color: var(--text); }
.logo-mono { flex: none; display: block; }
.logo-yazi { display: flex; flex-direction: column; line-height: 1; gap: 3px; }
.logo-ad { font-size: 19px; font-weight: 700; letter-spacing: .02em; text-transform: uppercase; }
.logo-alt { font-size: 9px; font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--text-3); }

.ust-nav { display: flex; gap: 4px; margin-left: 12px; }
.ust-nav a {
  display: inline-flex; align-items: center; height: 36px; padding: 0 12px; border-radius: 6px;
  color: var(--text-2); text-decoration: none; font-size: 13px; font-weight: 500; letter-spacing: .04em; text-transform: uppercase;
  transition: background .12s, color .12s;
}
.ust-nav a:hover { background: var(--surface-3); color: var(--text); }
.ust-islem { margin-left: auto; display: flex; align-items: center; gap: 8px; }

/* Tema düğmesi: açık temada ay, koyu temada güneş görünür */
#tema .ik { width: 18px; height: 18px; }
#tema .ik-gunes { display: none; }
[data-theme="dark"] #tema .ik-ay { display: none; }
[data-theme="dark"] #tema .ik-gunes { display: block; }

@media (max-width: 1000px) { .ust-nav { display: none; } }
@media (max-width: 720px) { .logo-yazi { display: none; } .ust { height: 60px; } }

/* ---------- Giriş (hero) ---------- */
.hero { position: relative; overflow: hidden; padding: 96px 0 88px; }
.hero::before {
  /* Teknik çizim ızgarası: bg-grid simgesi, kenarlara doğru solar. Maske alfa kanalıdır, renk değildir. */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(var(--bg-grid) 1px, transparent 1px), linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 65% 35%, black 20%, transparent 80%);
  mask-image: radial-gradient(ellipse 70% 80% at 65% 35%, black 20%, transparent 80%);
}
.hero::after {
  /* Vurgu parıltısı: accent-soft simgesinden türetilmiş yumuşak leke */
  content: ""; position: absolute; width: 720px; height: 720px; right: -200px; top: -260px; border-radius: 50%; pointer-events: none;
  background: radial-gradient(circle, color-mix(in oklch, var(--accent-soft) 85%, transparent) 0%, transparent 65%);
}
.hero-ic { position: relative; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.hero-metin .kicker { margin-bottom: 18px; }
.hero h1 {
  font-size: clamp(42px, 5.6vw, 76px); font-weight: 700; line-height: .98; letter-spacing: .005em; text-transform: uppercase;
  text-wrap: balance; color: var(--text);
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero-alt { margin-top: 22px; max-width: 520px; font-size: 17.5px; line-height: 1.55; color: var(--text-2); text-wrap: pretty; }
.hero-cta { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 12px; }
.btn-lg { height: 48px; padding: 0 22px; font-size: 14px; }
.hero-cipler { list-style: none; margin-top: 34px; display: flex; flex-wrap: wrap; gap: 8px; }
.hero-cipler .chip { height: 26px; font-size: 12px; color: var(--text-2); }

/* Örnek görünüm: pano kartı ve not kartı */
.hero-gorsel { position: relative; }
.pano { box-shadow: var(--shadow-lg); }
.pano-tarih { font-size: 11.5px; color: var(--text-3); letter-spacing: .04em; text-transform: uppercase; }
.pano-liste { list-style: none; }
.pano-satir {
  display: grid; grid-template-columns: 58px minmax(0, 1fr) auto; grid-template-areas: "kod ad rozet" "zaman zaman zaman";
  align-items: center; column-gap: 12px; row-gap: 9px; padding: 13px 18px; border-bottom: 1px solid var(--border);
}
.pano-kod { grid-area: kod; font-size: 12.5px; font-weight: 600; color: var(--accent); }
.pano-ad { grid-area: ad; font-size: 14px; font-weight: 500; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pano-satir .badge { grid-area: rozet; }
.pano-satir .zaman { grid-area: zaman; }
.zaman { display: flex; gap: 2px; height: 10px; border-radius: 3px; overflow: hidden; background: var(--inset); }
.zaman i, .pano-aciklama i { display: block; border-radius: 2px; }
.z-ok { background: var(--ok); }
.z-warn { background: var(--warn); }
.z-mute { background: var(--border-strong); }
.z-bos { background: transparent; }
.pano-ozet { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 16px 18px 14px; }
.ozet { display: flex; flex-direction: column; gap: 4px; }
.ozet-deger { font-size: 22px; font-weight: 600; color: var(--text); letter-spacing: -.01em; }
.ozet-deger small { font-size: 12px; font-weight: 500; color: var(--text-3); margin-right: 3px; }
.pano-aciklama { display: flex; gap: 16px; padding: 0 18px 14px; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); }
.pano-aciklama span { display: inline-flex; align-items: center; gap: 6px; }
.pano-aciklama i { width: 10px; height: 10px; }
.not-kart {
  position: absolute; right: -28px; bottom: -26px; width: 272px;
  display: flex; align-items: flex-start; gap: 12px; padding: 14px 16px;
  box-shadow: var(--shadow-lg); border-color: color-mix(in oklch, var(--warn) 45%, var(--border));
}
.not-kart .ik { color: var(--warn); margin-top: 1px; }
.not-kart p { margin-top: 4px; font-size: 14px; color: var(--text); }

@media (max-width: 1000px) {
  .hero { padding: 72px 0 72px; }
  .hero-ic { grid-template-columns: minmax(0, 1fr); gap: 44px; }
  .hero-gorsel { max-width: 620px; }
  .not-kart { right: 0; }
}
@media (max-width: 720px) {
  .hero { padding: 48px 0 56px; }
  .hero h1 { font-size: clamp(36px, 11vw, 48px); }
  .hero-alt { font-size: 16px; }
  .hero-cta .btn { flex: 1 1 auto; justify-content: center; }
  .pano-satir { grid-template-columns: 50px minmax(0, 1fr) auto; column-gap: 10px; padding: 12px 14px; }
  .pano-ozet { padding: 14px; gap: 8px; }
  .ozet-deger { font-size: 18px; }
  .not-kart { position: static; width: auto; margin-top: 12px; box-shadow: var(--shadow); }
}

/* ---------- Bölümler ---------- */
.bolum { padding: 88px 0; }
.bolum-koyu { background: var(--surface-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.bolum-bas { max-width: 640px; margin: 0 auto 44px; text-align: center; }
.bolum-bas .kicker { margin-bottom: 12px; }
.bolum-bas h2, .kapanis h2 { font-size: clamp(30px, 3.6vw, 44px); font-weight: 700; line-height: 1.02; letter-spacing: .005em; text-transform: uppercase; color: var(--text); text-wrap: balance; }
.bolum-alt { margin-top: 14px; font-size: 16.5px; line-height: 1.55; color: var(--text-2); text-wrap: pretty; }
.bolum-bas-sol { margin: 0; text-align: left; }
@media (max-width: 720px) { .bolum { padding: 56px 0; } .bolum-bas { margin-bottom: 28px; } }

.ikon-kutu {
  display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 9px; flex: none;
  background: var(--accent-soft); color: var(--accent);
}
[data-theme="dark"] .ikon-kutu { color: var(--accent-ink); }

/* Üç soru */
.uclu { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.uclu-kart { padding: 26px 24px 28px; display: flex; flex-direction: column; gap: 14px; }
.uclu-kart .h2 { margin-top: 6px; font-size: 22px; }
.uclu-kart .prose { font-size: 15px; }
@media (max-width: 1000px) {
  .uclu { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .uclu-kart { display: grid; grid-template-columns: 44px minmax(0, 1fr); column-gap: 18px; row-gap: 6px; padding: 20px; }
  .uclu-kart .ikon-kutu { grid-row: 1 / 3; }
  .uclu-kart .h2 { margin-top: 10px; font-size: 20px; }
}

/* Modüller */
.modul-izgara { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.modul { padding: 22px 20px 20px; display: flex; flex-direction: column; gap: 10px; min-height: 150px; transition: transform .12s, border-color .12s; }
.modul:hover { transform: translateY(-2px); border-color: var(--border-strong); }
.modul .ik { color: var(--text-3); width: 24px; height: 24px; }
.modul-ad { font-family: 'IBM Plex Sans Condensed', 'IBM Plex Sans', sans-serif; font-size: 20px; font-weight: 700; letter-spacing: .01em; text-transform: uppercase; margin-top: 6px; }
.modul-aciklama { font-size: 13.5px; line-height: 1.45; color: var(--text-2); }
.modul-ana { grid-column: span 2; background: var(--accent-soft); border-color: color-mix(in oklch, var(--accent) 35%, var(--border)); }
.modul-ana .ik, .modul-ana .modul-ad { color: var(--accent-ink); }
.modul-ana .modul-aciklama { color: color-mix(in oklch, var(--accent-ink) 70%, var(--text-2)); }
@media (prefers-reduced-motion: reduce) { .modul { transition: none; } .modul:hover { transform: none; } }
@media (max-width: 1000px) { .modul-izgara { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 720px) { .modul-izgara { grid-template-columns: minmax(0, 1fr); gap: 10px; } .modul { min-height: 0; padding: 18px 16px; } .modul-ana { grid-column: auto; } .modul-ad { font-size: 18px; } }

/* İlkeler */
.ilke-ic { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 56px; align-items: start; }
.ilke-liste { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 32px; }
.ilke { display: flex; gap: 16px; align-items: flex-start; }
.ilke .h3 { font-size: 14px; }
.ilke .prose { margin-top: 6px; font-size: 14.5px; }
@media (max-width: 1000px) { .ilke-ic { grid-template-columns: minmax(0, 1fr); gap: 36px; } }
@media (max-width: 720px) { .ilke-liste { grid-template-columns: minmax(0, 1fr); gap: 22px; } }

/* ---------- Kapanış ---------- */
.kapanis { position: relative; overflow: hidden; padding: 96px 0; background: var(--surface); border-top: 1px solid var(--border); text-align: center; }
.kapanis::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: repeating-linear-gradient(45deg, var(--bg-grid) 0 1px, transparent 1px 14px);
  -webkit-mask-image: radial-gradient(ellipse 60% 100% at 50% 100%, black 10%, transparent 75%);
  mask-image: radial-gradient(ellipse 60% 100% at 50% 100%, black 10%, transparent 75%);
  opacity: .7;
}
.kapanis-ic { position: relative; display: flex; flex-direction: column; align-items: center; gap: 16px; }
.kapanis-logo { margin-bottom: 8px; }
.kapanis p { font-size: 17px; color: var(--text-2); }
.kapanis .btn { margin-top: 10px; }
@media (max-width: 720px) { .kapanis { padding: 64px 0; } }

/* ---------- Alt bilgi ---------- */
.alt { border-top: 1px solid var(--border); background: var(--bg); }
.alt-ic { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 14px; padding-bottom: 14px; }
.alt-marka { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 700; letter-spacing: .02em; text-transform: uppercase; }
.alt-not, .alt a { font-size: 12px; letter-spacing: .04em; color: var(--text-3); }
.alt a { text-decoration-color: color-mix(in oklch, currentColor 40%, transparent); }