/* Tarih Çevresi — ana sayfa. Renk, yazı tipi ve eğik mavi düğmeler canlı sitenin "nimmo" temasından ölçüldü (17 Ekim 2026). */
:root{
  --lacivert:#0b0e2e;
  --koyu:#1a1f5e;
  --metin:#252a37;
  --soluk:#5f6577;
  --mavi1:#0841c6;
  --mavi2:#05c6fb;
  --zemin:#f4f7fd;
  --beyaz:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:400 16px/1.7 Roboto,system-ui,sans-serif;color:var(--soluk);background:var(--beyaz)}
a{color:inherit}
h1,h2,h3{font-family:Poppins,system-ui,sans-serif;color:var(--metin);line-height:1.2;margin:0 0 .5em}
em{font-family:"Playfair Display",Georgia,serif;font-style:italic;color:var(--mavi1)}
.kap{width:min(1170px,100% - 32px);margin-inline:auto}

/* Üst şerit */
.ust{position:sticky;top:0;z-index:10;background:var(--lacivert)}
.ust .kap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.logo{font:700 22px/1.05 Georgia,"Times New Roman",serif;letter-spacing:.06em;color:var(--beyaz);text-decoration:none;text-align:center}
.logo sup{font-size:.5em}
.logo span{font-size:.95em}
.ust nav{display:flex;gap:28px}
.ust nav a{font:600 15px Poppins,sans-serif;color:var(--beyaz);text-decoration:none;opacity:.85}
.ust nav a:hover,.ust nav a:focus-visible{opacity:1;color:var(--mavi2)}

/* Giriş */
.giris{background:linear-gradient(120deg,var(--lacivert),var(--koyu));color:#cfd5f5;padding:72px 0 80px}
.giris h1{color:var(--beyaz);font-size:clamp(34px,6vw,56px)}
.giris em{color:var(--mavi2)}
.giris p{max-width:620px;margin:0 0 28px}
.giris .ust-baslik{font:600 14px Poppins,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--mavi2);margin-bottom:8px}

/* Eğik mavi düğme (temadaki btn-gradient1) */
.dugme{position:relative;display:inline-block;padding:12px 30px;font:700 15px Poppins,sans-serif;color:var(--beyaz);text-decoration:none;isolation:isolate;transition:transform .2s}
.dugme::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,var(--mavi1) 0%,var(--mavi2) 50%,var(--mavi1));background-size:200% 100%;transform:skewX(-13deg);box-shadow:0 8px 20px rgba(8,65,198,.3);transition:background-position .4s}
.dugme:hover::before,.dugme:focus-visible::before{background-position:100% 0}
.dugme:hover{transform:translateY(-2px)}
.dugme:focus-visible{outline:2px solid var(--mavi2);outline-offset:4px}

/* Sayılar */
#sayilar{padding:72px 0 40px}
.bolum-baslik{text-align:center;font-size:clamp(28px,4vw,40px);margin-bottom:48px}
.izgara{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:56px 30px}
.sayi{display:flex;flex-direction:column;align-items:center;text-align:center}
.sayi h3{font-size:clamp(22px,2.4vw,30px);min-height:2.4em;display:flex;align-items:flex-end;justify-content:center}
.kapak{display:block;width:100%;max-width:300px;aspect-ratio:1;overflow:hidden;background:var(--zemin)}
.kapak img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .35s}
.kapak.sayfa img{object-fit:contain;padding:12px}
.kapak:hover img,.kapak:focus-visible img{transform:scale(1.04)}
.sayi .dugmeler{display:flex;flex-direction:column;align-items:flex-start;gap:12px;margin-top:24px;width:100%;max-width:300px}
.dugme i{font-style:normal;margin-left:8px;opacity:.85}
.dugme.pasif{opacity:.45;pointer-events:none}

/* Künye */
.kunye{background:var(--zemin);padding:80px 0}
.kunye .kap{max-width:760px}
.etiket{font:500 15px Poppins,sans-serif;color:var(--mavi1);margin:0 0 6px}
.kunye h2{font-size:clamp(30px,4vw,44px);color:var(--koyu)}
.imlec{color:var(--mavi2);font-weight:400}
.kunye hr{width:40px;border:0;border-top:3px solid var(--koyu);margin:18px 0 24px}
.kunye p{margin:0 0 6px}

/* İletişim */
.iletisim{background:linear-gradient(90deg,var(--zemin) 50%,var(--koyu) 50%);padding:80px 0}
.iletisim .kap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.kart{background:var(--beyaz);padding:40px;box-shadow:0 20px 50px rgba(11,14,46,.12)}
.kart h3{font-size:24px}
.kart p{margin:0 0 8px}
.kart strong{color:var(--mavi1)}
.kart a{text-decoration:none}
.davet{color:#cfd5f5}
.davet h2{color:var(--beyaz);font-size:clamp(28px,4vw,42px)}
.davet em{color:var(--mavi2)}

/* Alt bilgi */
.alt{background:var(--lacivert);color:#9aa3c7;padding:48px 0;text-align:center}
.alt .logo{display:inline-block;margin-bottom:16px}
.alt p{margin:0;font-size:14px}

@media (max-width:760px){
  .ust nav{gap:16px}
  .ust nav a{font-size:14px}
  .logo{font-size:17px}
  .iletisim{background:var(--zemin)}
  .iletisim .kap{grid-template-columns:1fr}
  .davet{background:var(--koyu);padding:32px}
  .izgara{gap:48px 24px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}