/* ============================================================
   EREN İNŞAAT — SUNUM KATMANI STİLLERİ
   index.html, sunum/modul-haritasi.html, sunum/demo-secim.html
   ortak olarak bu dosyayı kullanır. (K2.5)
   ============================================================ */

/* ------------------------------------------------------------ ÜST ÇUBUK */
.s-ust {
  position: sticky; top: 0; z-index: 60;
  background: rgba(12, 12, 24, .82); backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent; transition: border-color .2s ease, background .2s ease;
}
.s-ust.kaydi { border-bottom-color: var(--cizgi); background: rgba(12, 12, 24, .95); }
.s-ust-ic {
  max-width: 1180px; margin: 0 auto; padding: 14px var(--bosluk-5);
  display: flex; align-items: center; gap: var(--bosluk-4);
}
.s-marka { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.s-marka:hover { text-decoration: none; }
.s-marka b { display: block; font-size: 15px; font-weight: 700; letter-spacing: .17em; color: var(--metin); }
.s-marka small { display: block; font-size: 9.5px; letter-spacing: .2em; color: var(--silik); text-transform: uppercase; }
.s-ust-bag { display: flex; align-items: center; gap: var(--bosluk-5); margin-left: auto; }
.s-ust-bag a.metin-bag { font-size: 13px; color: var(--metin-3); font-weight: 550; }
.s-ust-bag a.metin-bag:hover { color: var(--metin); text-decoration: none; }

/* ------------------------------------------------------------ BÖLÜM DÜZENİ */
.s-bolum { padding: var(--bosluk-8) 0; }
.s-bolum-ic { max-width: 1180px; margin: 0 auto; padding: 0 var(--bosluk-5); }
.s-bolum-bas { text-align: center; max-width: 720px; margin: 0 auto var(--bosluk-6); }
.s-etiket {
  display: inline-flex; align-items: center; gap: 7px; padding: 5px 13px; border-radius: 99px;
  background: var(--kirmizi-sis); border: 1px solid rgba(204, 12, 24, .3);
  color: var(--kirmizi-ac); font-size: 11px; font-weight: 700;
  letter-spacing: .13em; text-transform: uppercase; margin-bottom: var(--bosluk-4);
}
.s-etiket svg { width: 12px; height: 12px; }
.s-bolum-bas h2 { font-size: 30px; letter-spacing: -.025em; margin-bottom: var(--bosluk-3); }
.s-bolum-bas p { font-size: 15px; color: var(--metin-3); line-height: 1.65; }

/* ------------------------------------------------------------ KAHRAMAN */
.s-kahraman { position: relative; padding: var(--bosluk-8) 0 var(--bosluk-7); overflow: hidden; }
.s-kahraman::before {
  content: ""; position: absolute; inset: -20% -10% auto -10%; height: 620px;
  background: radial-gradient(60% 60% at 50% 0%, rgba(204, 12, 24, .16) 0%, transparent 70%);
  pointer-events: none;
}
.s-kahraman-ic { position: relative; max-width: 1180px; margin: 0 auto; padding: 0 var(--bosluk-5); text-align: center; }
.s-logo { margin: 0 auto var(--bosluk-5); width: 168px; }
.s-kahraman h1 {
  font-size: 46px; line-height: 1.15; letter-spacing: -.035em;
  max-width: 15ch; margin: 0 auto var(--bosluk-4);
}
.s-kahraman h1 .vurgu {
  background: linear-gradient(100deg, var(--kirmizi-ac) 10%, #FF7A84 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.s-kahraman .ozet { font-size: 16.5px; color: var(--metin-3); max-width: 60ch; margin: 0 auto var(--bosluk-6); line-height: 1.65; }
.s-eylemler { display: flex; gap: var(--bosluk-3); justify-content: center; flex-wrap: wrap; }

.s-sayilar {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 1px; background: var(--cizgi); border: 1px solid var(--cizgi);
  border-radius: var(--yaricap-l); overflow: hidden; margin-top: var(--bosluk-7); max-width: 860px;
  margin-left: auto; margin-right: auto;
}
.s-sayi { background: var(--yuzey); padding: 20px 16px; text-align: center; }
.s-sayi b {
  display: block; font-size: 30px; font-weight: 700; letter-spacing: -.03em;
  color: var(--metin); font-variant-numeric: tabular-nums; line-height: 1.1;
}
.s-sayi small { display: block; font-size: 11px; color: var(--silik); margin-top: 5px; letter-spacing: .05em; }

/* ------------------------------------------------------------ PROBLEM */
.s-problem { background: linear-gradient(180deg, transparent, rgba(12, 24, 36, .5), transparent); }
.s-dert-izgara { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--bosluk-4); }
.s-dert {
  background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap-l);
  padding: 24px; position: relative;
}
.s-dert-ikon {
  width: 40px; height: 40px; border-radius: var(--yaricap); display: grid; place-items: center;
  background: rgba(204, 12, 24, .1); color: var(--kirmizi-ac); margin-bottom: var(--bosluk-4);
  border: 1px solid rgba(204, 12, 24, .25);
}
.s-dert-ikon svg { width: 19px; height: 19px; }
.s-dert h4 { margin-bottom: 8px; font-size: 15.5px; }
.s-dert p { font-size: 13.5px; color: var(--metin-3); line-height: 1.6; margin: 0; }
.s-dert .alinti {
  margin-top: var(--bosluk-4); padding: 11px 14px; border-radius: var(--yaricap-s);
  background: var(--yuzey-2); border-left: 3px solid var(--kirmizi);
  font-size: 12.5px; color: var(--metin-2); font-style: italic;
}

/* ------------------------------------------------------------ MİMARİ */
.s-mimari {
  background: var(--yuzey); border: 1px solid var(--cizgi);
  border-radius: var(--yaricap-xl); padding: var(--bosluk-6); overflow-x: auto;
}
.s-mimari svg { margin: 0 auto; min-width: 700px; }
.s-mimari-not {
  margin-top: var(--bosluk-5); padding: 14px 18px; border-radius: var(--yaricap);
  background: var(--kirmizi-sis); border: 1px solid rgba(204, 12, 24, .25);
  font-size: 13px; color: var(--metin-2); display: flex; gap: 11px; align-items: flex-start;
}
.s-mimari-not svg { width: 17px; height: 17px; min-width: 0; color: var(--kirmizi-ac); flex: 0 0 auto; margin-top: 1px; }
.s-mimari-not b { color: var(--metin); }

/* ------------------------------------------------------------ MODÜL KARTLARI */
.s-modul-izgara { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--bosluk-3); }
.s-modul {
  background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap);
  padding: 18px; display: flex; gap: 14px; align-items: flex-start;
  transition: border-color .16s ease, transform .14s ease, background .16s ease;
}
.s-modul:hover { border-color: var(--cizgi-3); transform: translateY(-2px); background: var(--yuzey-2); }
.s-modul-ikon {
  width: 36px; height: 36px; border-radius: var(--yaricap-s); flex: 0 0 auto;
  display: grid; place-items: center; background: var(--yuzey-3); color: var(--metin-2);
  border: 1px solid var(--cizgi-2);
}
.s-modul-ikon svg { width: 17px; height: 17px; }
.s-modul-no {
  position: absolute; font-size: 10px; font-weight: 700; color: var(--cok-silik);
  font-family: var(--font-mono);
}
.s-modul h4 { font-size: 14px; margin-bottom: 4px; display: flex; align-items: center; gap: 7px; }
.s-modul h4 em {
  font-style: normal; font-size: 10px; font-weight: 700; color: var(--cok-silik);
  font-family: var(--font-mono); letter-spacing: .04em;
}
.s-modul p { font-size: 12.5px; color: var(--silik); line-height: 1.55; margin: 0; }
.s-modul.oneri { border-style: dashed; }
.s-modul.oneri h4 em { color: var(--d-durakladi); }

/* ------------------------------------------------------------ AŞAMA ŞERİDİ */
.s-asama-serit { display: flex; flex-direction: column; gap: 7px; }
.s-asama {
  display: flex; align-items: center; gap: var(--bosluk-4);
  background: var(--yuzey); border: 1px solid var(--cizgi);
  border-radius: var(--yaricap-s); padding: 11px 16px;
  transition: border-color .15s ease, background .15s ease;
}
.s-asama:hover { border-color: var(--cizgi-3); background: var(--yuzey-2); }
.s-asama-no {
  width: 27px; height: 27px; border-radius: 50%; flex: 0 0 auto; display: grid; place-items: center;
  background: var(--yuzey-3); border: 1px solid var(--cizgi-2);
  font-size: 11.5px; font-weight: 700; color: var(--metin-3); font-variant-numeric: tabular-nums;
}
.s-asama-ad { flex: 1 1 auto; min-width: 0; font-size: 13.5px; font-weight: 600; color: var(--metin); }
.s-asama-kat { font-size: 11.5px; color: var(--cok-silik); white-space: nowrap; }
.s-asama-agirlik { display: flex; align-items: center; gap: 10px; flex: 0 0 auto; width: 190px; }
.s-asama-agirlik .ilerleme { flex: 1 1 auto; }
.s-asama-agirlik b {
  font-size: 12px; font-weight: 700; color: var(--metin-2);
  font-variant-numeric: tabular-nums; min-width: 30px; text-align: right;
}
.s-asama.buyuk .s-asama-no { background: var(--kirmizi-sis); border-color: rgba(204, 12, 24, .35); color: var(--kirmizi-ac); }

/* ------------------------------------------------------------ EKRAN ÖNİZLEME */
.s-onizleme { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: var(--bosluk-5); align-items: center; }
.s-ekran {
  border-radius: var(--yaricap-l); overflow: hidden; border: 1px solid var(--cizgi-2);
  background: var(--yuzey); box-shadow: var(--golge-3);
}
.s-ekran-cubuk {
  display: flex; align-items: center; gap: 6px; padding: 9px 13px;
  background: var(--yuzey-2); border-bottom: 1px solid var(--cizgi);
}
.s-ekran-cubuk i { width: 9px; height: 9px; border-radius: 50%; background: var(--cizgi-3); }
.s-ekran-cubuk span {
  margin-left: 10px; font-size: 10.5px; color: var(--cok-silik); font-family: var(--font-mono);
}
.s-ekran-govde { padding: 0; }

.s-telefon {
  width: 250px; margin: 0 auto; border-radius: 30px; padding: 9px;
  background: #06060C; border: 1px solid var(--cizgi-2); box-shadow: var(--golge-3);
}
.s-telefon-ic { border-radius: 22px; overflow: hidden; background: var(--bg); position: relative; }
.s-telefon-centik {
  position: absolute; top: 0; left: 50%; transform: translateX(-50%);
  width: 88px; height: 19px; background: #06060C; border-radius: 0 0 12px 12px; z-index: 5;
}

/* ------------------------------------------------------------ AKIŞ ADIMLARI */
.s-adimlar { display: grid; grid-template-columns: repeat(auto-fit, minmax(214px, 1fr)); gap: var(--bosluk-4); }
.s-adim { position: relative; padding-top: var(--bosluk-4); }
.s-adim::before {
  content: attr(data-no); position: absolute; top: 0; left: 0;
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  background: var(--kirmizi); color: #fff; font-size: 13px; font-weight: 700;
  box-shadow: var(--golge-kirmizi);
}
.s-adim-ic { padding-left: 42px; }
.s-adim h4 { font-size: 14px; margin-bottom: 5px; }
.s-adim p { font-size: 12.5px; color: var(--silik); line-height: 1.55; margin: 0; }

/* ------------------------------------------------------------ KAPANIŞ CTA */
.s-cta {
  text-align: center; background: var(--yuzey); border: 1px solid var(--cizgi);
  border-radius: var(--yaricap-xl); padding: var(--bosluk-7) var(--bosluk-5); position: relative; overflow: hidden;
}
.s-cta::before {
  content: ""; position: absolute; inset: auto -20% -60% -20%; height: 320px;
  background: radial-gradient(50% 60% at 50% 100%, rgba(204, 12, 24, .18), transparent 70%);
}
.s-cta > * { position: relative; }
.s-cta h2 { font-size: 27px; margin-bottom: var(--bosluk-3); letter-spacing: -.025em; }
.s-cta p { color: var(--metin-3); max-width: 52ch; margin: 0 auto var(--bosluk-5); font-size: 14.5px; }

/* ------------------------------------------------------------ FOOTER */
.s-footer { border-top: 1px solid var(--cizgi); padding: var(--bosluk-6) 0; margin-top: var(--bosluk-7); }
.s-footer-ic {
  max-width: 1180px; margin: 0 auto; padding: 0 var(--bosluk-5);
  display: flex; align-items: center; justify-content: space-between; gap: var(--bosluk-4); flex-wrap: wrap;
}
.s-footer small { font-size: 11.5px; color: var(--cok-silik); }
.s-footer b { color: var(--metin-3); }

/* ------------------------------------------------------------ DEMO SEÇİM */
.s-secim { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: var(--bosluk-5); max-width: 900px; margin: 0 auto; }
.s-secim-kart {
  background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap-xl);
  padding: var(--bosluk-6); text-align: center; text-decoration: none; display: block;
  transition: border-color .18s ease, transform .16s ease, box-shadow .18s ease;
}
.s-secim-kart:hover {
  border-color: rgba(204, 12, 24, .45); transform: translateY(-4px);
  box-shadow: var(--golge-3); text-decoration: none;
}
.s-secim-gorsel { margin-bottom: var(--bosluk-5); display: grid; place-items: center; height: 176px; }
.s-secim-kart h3 { font-size: 19px; margin-bottom: 8px; color: var(--metin); }
.s-secim-kart p { font-size: 13.5px; color: var(--silik); margin-bottom: var(--bosluk-4); }
.s-secim-liste { list-style: none; padding: 0; text-align: left; margin: 0 0 var(--bosluk-5); }
.s-secim-liste li {
  display: flex; gap: 9px; align-items: flex-start; font-size: 12.5px;
  color: var(--metin-3); padding: 4px 0;
}
.s-secim-liste svg { width: 14px; height: 14px; color: var(--d-tamam); flex: 0 0 auto; margin-top: 2px; }

/* ------------------------------------------------------------ DUYARLI */
@media (max-width: 900px) {
  .s-kahraman h1 { font-size: 34px; }
  .s-bolum-bas h2 { font-size: 24px; }
  .s-onizleme { grid-template-columns: 1fr; }
  .s-bolum { padding: var(--bosluk-7) 0; }
  .s-asama { flex-wrap: wrap; }
  .s-asama-agirlik { width: 100%; }
  .s-ust-bag { gap: var(--bosluk-3); }
  .s-ust-bag a.metin-bag { display: none; }
}