/* Amfice tanıtım sitesi, B yönü: ışıklar söner, ders başlar.
   Düzen fikri: sayfa tek bir dersi oynatır. Açılış loş amfide, projeksiyonun ışığı sahneyi aydınlatır;
   koltuk noktaları katılan telefonlardır; ders bitince ışıklar açılır ve sayfa DESIGN.md'nin açık tuvaline geçer.
   Renkler ve yazı DESIGN.md'den. Cam yalnızca gezinmede, projeksiyon ve telefon çerçevesinde. */

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url('../fonts/plus-jakarta-sans-latin-ext-wght-normal.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url('../fonts/plus-jakarta-sans-latin-wght-normal.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  /* Zemin: loş amfi ve gün ışığı */
  --gece: #0B1C30;
  --gece-2: #12263F;
  --gece-3: #1A3050;
  --koltuk: #22344F;
  --tuval: #F8FAFC;
  --kart: #FFFFFF;
  --kart-soluk: #F1F5F9;
  /* Metin */
  --murekkep: #0F172A;
  --ikincil: #475569;
  --soluk: #64748B;
  --acik-metin: #CBD5E1;
  --acik-soluk: #94A3B8;
  --cizgi: #E2E8F0;
  /* Vurgu: DESIGN.md */
  --indigo: #4F46E5;
  --indigo-koyu: #4338CA;
  --indigo-acik: #C7D2FE;
  --zumrut: #10B981;
  --zumrut-acik: #6EE7B7;
  --zumrut-koyu: #047857;
  --kehribar: #F59E0B;
  /* Yazı */
  --yazi: 'Plus Jakarta Sans', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  --t-dev: clamp(2.5rem, 1.55rem + 3.9vw, 4.25rem);
  --t-baslik: clamp(1.875rem, 1.35rem + 2vw, 2.75rem);
  --t-alt: 1.25rem;
  --t-giris: clamp(1.0625rem, 0.98rem + 0.35vw, 1.25rem);
  --t-govde: 1rem;
  --t-kucuk: 0.875rem;
  --t-etiket: 0.8125rem;
  /* Ölçü */
  --kap: 1200px;
  --kenar: max(20px, env(safe-area-inset-left, 0px));
  --kenar-sag: max(20px, env(safe-area-inset-right, 0px));
  --golge-3: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 96px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  font-family: var(--yazi);
  font-size: var(--t-govde);
  line-height: 1.6;
  color: var(--acik-metin);
  background: var(--gece);
  font-feature-settings: 'ss01' 0;
  overflow-x: clip;
}
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
p { margin: 0; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--zumrut-acik); outline-offset: 3px; border-radius: 6px; }
.zemin-acik :focus-visible { outline-color: var(--indigo); }

.gizli-baglanti {
  position: absolute; left: var(--kenar); top: -100px; z-index: 100;
  padding: 10px 16px; border-radius: 8px; background: var(--kart); color: var(--murekkep); font-weight: 700;
}
.gizli-baglanti:focus { top: calc(env(safe-area-inset-top, 0px) + 12px); }
.ekran-okuyucu { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.kap {
  width: 100%;
  max-width: calc(var(--kap) + 40px);
  margin-inline: auto;
  padding-left: var(--kenar);
  padding-right: var(--kenar-sag);
}

/* ---------- Gezinme: yüzen cam çubuk ---------- */
.ust {
  position: fixed;
  z-index: 50;
  top: calc(env(safe-area-inset-top, 0px) + 12px);
  left: max(12px, env(safe-area-inset-left, 0px));
  right: max(12px, env(safe-area-inset-right, 0px));
  max-width: 1200px;
  margin-inline: auto;
  height: 60px;
  padding: 0 8px 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-radius: 16px;
  /* Koyu cam yeterince koyu: altından açık renkli bir ekran görüntüsü geçerken de yazı okunur. */
  background: rgba(11, 28, 48, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  color: #FFFFFF;
  transition: background-color 0.35s ease, border-color 0.35s ease, color 0.35s ease, box-shadow 0.35s ease;
}
.ust.acik {
  background: rgba(255, 255, 255, 0.74);
  border-color: rgba(255, 255, 255, 0.95);
  color: var(--murekkep);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.04);
}
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 1.0625rem; letter-spacing: -0.01em; }
.logo-kutu {
  width: 32px; height: 32px; border-radius: 8px; background: var(--indigo); color: #FFFFFF;
  display: grid; place-items: center; font-size: 0.8125rem; font-weight: 800; letter-spacing: 0.02em;
}
.ust-baglantilar { display: none; align-items: center; gap: 28px; font-size: 0.9375rem; font-weight: 500; }
.ust-baglantilar a { text-decoration: none; color: var(--acik-metin); transition: color 0.2s ease; }
.ust-baglantilar a:hover { color: #FFFFFF; }
.ust.acik .ust-baglantilar a { color: var(--ikincil); }
.ust.acik .ust-baglantilar a:hover { color: var(--murekkep); }
.ust-sag { display: flex; align-items: center; gap: 4px; }
.menu-dugmesi {
  width: 44px; height: 44px; border: 0; border-radius: 10px; background: transparent; color: inherit;
  display: grid; place-items: center; cursor: pointer;
}
.menu-paneli {
  position: fixed; z-index: 49;
  top: calc(env(safe-area-inset-top, 0px) + 80px);
  left: max(12px, env(safe-area-inset-left, 0px));
  right: max(12px, env(safe-area-inset-right, 0px));
  padding: 8px; border-radius: 16px;
  background: rgba(18, 38, 63, 0.92); border: 1px solid rgba(255, 255, 255, 0.12);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  display: grid; gap: 2px;
}
.menu-paneli a { padding: 14px 14px; border-radius: 10px; text-decoration: none; color: #FFFFFF; font-weight: 600; }
.menu-paneli a:hover { background: rgba(255, 255, 255, 0.06); }
@media (min-width: 900px) {
  .ust { padding: 0 10px 0 20px; height: 64px; }
  .ust-baglantilar { display: flex; }
  .menu-dugmesi, .menu-paneli { display: none; }
}

/* ---------- Düğmeler ---------- */
.dugme {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 24px; border-radius: 8px;
  font: inherit; font-weight: 700; font-size: 1rem; text-decoration: none; cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.dugme svg { flex: none; }
.dugme-ana { background: var(--indigo); color: #FFFFFF; box-shadow: 0 8px 24px rgba(79, 70, 229, 0.32); }
.dugme-ana:hover { background: var(--indigo-koyu); }
.dugme-cam { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.22); color: #FFFFFF; -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); }
.dugme-cam:hover { background: rgba(255, 255, 255, 0.14); }
.dugme-ikinci { background: var(--kart); border-color: var(--cizgi); color: #1E293B; font-weight: 600; }
.dugme-ikinci:hover { background: var(--tuval); border-color: #CBD5E1; }
.dugme-kucuk { min-height: 44px; padding: 0 16px; font-size: 0.9375rem; font-weight: 600; box-shadow: none; }
@media (min-width: 640px) { .dugme { min-height: 56px; font-size: 1.0625rem; } .dugme-kucuk { min-height: 44px; font-size: 0.9375rem; } }

/* ---------- Ortak parçalar ---------- */
.etiket {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: var(--t-etiket); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--zumrut-acik);
  font-variant-numeric: tabular-nums;
}
.zemin-acik .etiket { color: var(--zumrut-koyu); }
.etiket .saat {
  padding: 3px 8px; border-radius: 6px; background: rgba(110, 231, 183, 0.12); letter-spacing: 0.02em;
}
.zemin-acik .etiket .saat { background: #ECFDF5; }
.bolum-basligi { font-size: var(--t-baslik); line-height: 1.15; font-weight: 800; letter-spacing: -0.03em; color: #FFFFFF; }
.zemin-acik .bolum-basligi { color: var(--murekkep); }
.bolum-giris { font-size: var(--t-giris); line-height: 1.6; color: var(--acik-metin); max-width: 62ch; }
.zemin-acik .bolum-giris { color: var(--ikincil); }
.bolum-giris strong, .adim p strong { color: #FFFFFF; font-weight: 700; }
.zemin-acik .bolum-giris strong { color: var(--murekkep); }

/* Projeksiyon ve telefon çerçeveleri: cam */
.proj {
  position: relative;
  padding: 10px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.05), 0 30px 110px rgba(79, 70, 229, 0.4), 0 0 56px rgba(199, 210, 254, 0.2);
}
.proj img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 13px; background: var(--gece-2); }
.proj-karne img { aspect-ratio: 16 / 10; }
.zemin-acik .proj {
  background: rgba(255, 255, 255, 0.55);
  border-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--golge-3);
}
.tel {
  position: relative;
  padding: 7px;
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.26);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}
.tel img { width: 100%; aspect-ratio: 390 / 844; object-fit: cover; border-radius: 27px; background: var(--tuval); }
.zemin-acik .tel { background: rgba(241, 245, 249, 0.7); border-color: rgba(255, 255, 255, 0.95); box-shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.12), 0 8px 10px -6px rgba(15, 23, 42, 0.05); }
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .ust { background: rgba(18, 38, 63, 0.96); }
  .ust.acik { background: rgba(255, 255, 255, 0.97); }
  .proj, .tel { background: var(--gece-3); }
  .zemin-acik .proj, .zemin-acik .tel { background: var(--kart); }
}
@media (prefers-reduced-transparency: reduce) {
  .ust { background: var(--gece-2); -webkit-backdrop-filter: none; backdrop-filter: none; }
  .ust.acik { background: var(--kart); }
  .proj, .tel { background: var(--gece-3); -webkit-backdrop-filter: none; backdrop-filter: none; }
  .zemin-acik .proj, .zemin-acik .tel { background: var(--kart); }
}

/* Koltuk sıraları: tuval, yalnızca süs */
.koltuklar { position: absolute; inset: auto 0 0 0; width: 100%; height: 72%; pointer-events: none; z-index: 0; }
.koltuk-katman { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.koltuklar.yapiskan { position: sticky; top: 0; inset: auto; height: 100vh; height: 100svh; display: block; }
/* Telefonda sıralar yazının altında kalır; noktalar paragrafın arkasına girmez. */
.acilis .koltuklar { height: 50%; }
@media (min-width: 900px) { .acilis .koltuklar { height: 72%; } }

/* ---------- Açılış ---------- */
.acilis {
  position: relative;
  overflow: hidden;
  padding-top: calc(env(safe-area-inset-top, 0px) + 116px);
  padding-bottom: 40px;
  background: var(--gece);
  isolation: isolate;
}
.huzme {
  position: absolute; z-index: 0; left: 0; right: 0; top: 0; height: 78%;
  clip-path: polygon(40% 0%, 60% 0%, 96% 100%, 4% 100%);
  background: linear-gradient(180deg, rgba(199, 210, 254, 0.17) 0%, rgba(199, 210, 254, 0.05) 55%, rgba(199, 210, 254, 0) 100%);
  pointer-events: none;
}
@media (min-width: 900px) { .huzme { clip-path: polygon(44% 0%, 56% 0%, 88% 100%, 12% 100%); } }
.acilis-metin { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 20px; text-align: center; }
.rozet {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: 9999px;
  background: rgba(16, 185, 129, 0.12); border: 1px solid rgba(110, 231, 183, 0.28);
  color: var(--zumrut-acik); font-size: var(--t-kucuk); font-weight: 600;
}
.rozet::before { content: ''; width: 8px; height: 8px; border-radius: 9999px; background: var(--zumrut); }
.acilis h1 { font-size: var(--t-dev); line-height: 1.08; font-weight: 800; letter-spacing: -0.035em; color: #FFFFFF; max-width: 14ch; }
.acilis .bolum-giris { text-align: center; max-width: 40rem; }
.acilis-dugmeler { display: flex; flex-direction: column; gap: 10px; width: 100%; margin-top: 4px; }
.acilis-not { font-size: var(--t-kucuk); color: var(--acik-soluk); }
.acilis-not a { color: var(--acik-metin); }
@media (min-width: 560px) {
  .acilis-dugmeler { flex-direction: row; justify-content: center; width: auto; }
}
.acilis-gorsel { position: relative; z-index: 1; margin: 48px auto 0; max-width: 880px; }
.acilis-gorsel .tel { position: absolute; right: -2%; bottom: -12%; width: 27%; max-width: 230px; }
@media (min-width: 900px) {
  .acilis { padding-top: calc(env(safe-area-inset-top, 0px) + 136px); padding-bottom: 72px; }
  .acilis-gorsel { margin-top: 64px; }
  .acilis-gorsel .tel { right: -14%; bottom: -16%; width: 25%; }
}
.ogrenci-notu {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  margin-top: 64px; font-size: var(--t-kucuk); color: var(--acik-metin); text-align: center;
}
.ogrenci-notu svg { flex: none; color: var(--zumrut-acik); }

/* ---------- Anlatım: yapışkan görsel, kayan adımlar ---------- */
.anlatim { position: relative; overflow: clip; background: var(--gece); padding-block: 80px 48px; isolation: isolate; }
.anlatim-bas { position: relative; z-index: 1; display: grid; gap: 16px; max-width: 46rem; }
.anlatim-govde { position: relative; z-index: 1; margin-top: 40px; }
.adimlar { display: grid; gap: 56px; }
.adim { display: grid; gap: 20px; }
.adim-metin { display: grid; gap: 10px; max-width: 32rem; }
.adim h3 { font-size: var(--t-alt); line-height: 1.4; font-weight: 700; color: #FFFFFF; display: flex; gap: 12px; align-items: baseline; }
.adim h3 .sira {
  flex: none; width: 28px; height: 28px; border-radius: 9999px; border: 2px solid var(--indigo-acik);
  color: var(--indigo-acik); font-size: 0.8125rem; font-weight: 800; display: inline-grid; place-items: center;
  transform: translateY(-2px); font-variant-numeric: tabular-nums;
}
.adim p { color: var(--acik-metin); }
.adim-gorsel { position: relative; padding-right: 18%; }
.adim-gorsel .tel { position: absolute; right: 0; bottom: -8%; width: 26%; }
.adim-gorsel.tek { padding-right: 0; }
.sahne { display: none; }
.tipler { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; padding: 0; list-style: none; }
.tipler li {
  padding: 6px 12px; border-radius: 9999px; font-size: var(--t-kucuk); font-weight: 600;
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.12); color: var(--acik-metin);
}
.tipler li.notlu { border-color: rgba(199, 210, 254, 0.45); color: #FFFFFF; }
.tip-aciklama { font-size: var(--t-kucuk); color: var(--acik-soluk); }
@media (min-width: 900px) {
  .anlatim { padding-block: 128px 96px; }
  .anlatim-govde { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 64px; margin-top: 24px; }
  .adimlar { gap: 0; }
  .adim { min-height: 72vh; align-content: center; }
  .adim-gorsel { display: none; }
  .sahne {
    display: block; position: sticky; top: 14vh; height: 72vh; align-self: start;
  }
  .sahne-ic { position: relative; height: 100%; display: grid; place-items: center; }
  .durum {
    grid-area: 1 / 1; width: 100%; position: relative; padding-right: 14%;
    opacity: 0; transform: translateY(16px) scale(0.985);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .durum .tel { position: absolute; right: 0; bottom: -10%; width: 24%; }
  .durum.tek { padding-right: 0; }
  .anlatim[data-adim="0"] .durum[data-durum="0"],
  .anlatim[data-adim="1"] .durum[data-durum="1"],
  .anlatim[data-adim="2"] .durum[data-durum="2"] { opacity: 1; transform: none; }
  .adim .sira { transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease; }
  .adim.etkin .sira { background: var(--indigo); border-color: var(--indigo); color: #FFFFFF; }
  .sayac {
    position: absolute; z-index: 2; left: 0; top: -8px;
    display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 9999px;
    background: rgba(11, 28, 48, 0.72); border: 1px solid rgba(110, 231, 183, 0.32);
    -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
    color: #FFFFFF; font-weight: 700; font-size: var(--t-kucuk); font-variant-numeric: tabular-nums;
  }
  .sayac::before { content: ''; width: 8px; height: 8px; border-radius: 9999px; background: var(--zumrut); box-shadow: 0 0 10px rgba(16, 185, 129, 0.8); }
}
.sayac[hidden] { display: none; }

/* ---------- Oyunlar: yatay ray ---------- */
.oyunlar { position: relative; background: var(--gece); padding-block: 80px 64px; }
.oyunlar-bas { display: grid; gap: 16px; max-width: 46rem; }
.ray-sar { position: relative; margin-top: 40px; }
.ray {
  display: grid; grid-auto-flow: column; grid-auto-columns: min(86%, 560px); gap: 16px;
  overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x mandatory;
  padding-left: var(--kenar); padding-right: var(--kenar-sag); scroll-padding-left: var(--kenar);
  padding-bottom: 12px; margin: 0; list-style: none;
  scrollbar-width: thin; scrollbar-color: var(--gece-3) transparent;
}
@media (min-width: 1240px) {
  .ray { padding-left: calc((100vw - 1200px) / 2); scroll-padding-left: calc((100vw - 1200px) / 2); }
}
.oyun {
  scroll-snap-align: start;
  display: grid; gap: 14px; align-content: start;
  padding: 14px 14px 20px; border-radius: 20px;
  background: var(--gece-2); border: 1px solid rgba(255, 255, 255, 0.08);
}
.oyun-gorsel { position: relative; }
.oyun-gorsel > img { border-radius: 12px; aspect-ratio: 16 / 9; width: 100%; object-fit: cover; }
.oyun-gorsel .tel { position: absolute; right: 8px; bottom: -14px; width: 24%; padding: 4px; border-radius: 20px; }
.oyun-gorsel .tel img { border-radius: 16px; }
.oyun h3 { font-size: 1.125rem; font-weight: 700; color: #FFFFFF; padding-inline: 4px; margin-top: 6px; }
.oyun p { color: var(--acik-metin); font-size: 0.9375rem; padding-inline: 4px; max-width: 34rem; }
.ray-dugmeleri { display: none; gap: 8px; }
.ray-dugmeleri button {
  width: 48px; height: 48px; border-radius: 9999px; border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06); color: #FFFFFF; display: grid; place-items: center; cursor: pointer;
}
.ray-dugmeleri button:hover { background: rgba(255, 255, 255, 0.12); }
.ray-dugmeleri button:disabled { opacity: 0.35; cursor: default; }
@media (min-width: 900px) {
  .oyunlar { padding-block: 128px 96px; }
  .oyunlar-ust { display: flex; align-items: end; justify-content: space-between; gap: 24px; }
  .ray-dugmeleri { display: flex; }
}

/* ---------- Şafak: ışıklar açılır ---------- */
.safak {
  position: relative;
  height: clamp(300px, 58vh, 620px);
  background: linear-gradient(180deg, var(--gece) 0%, var(--gece) 16%, #20334F 40%, #6F7F98 62%, #D5DDE8 84%, var(--tuval) 100%);
  display: grid; align-content: start; justify-items: center;
  padding-top: clamp(24px, 5vh, 72px);
  text-align: center;
}
.safak p { color: #FFFFFF; font-weight: 700; font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem); line-height: 1.2; letter-spacing: -0.02em; }
.safak .etiket { margin-bottom: 12px; }

/* ---------- Açık bölümler ---------- */
.zemin-acik { background: var(--tuval); color: var(--ikincil); }
.ders-sonu { padding-block: 24px 72px; }
.ders-sonu-izgara { display: grid; gap: 40px; }
.ders-sonu-metin { display: grid; gap: 16px; align-content: start; }
.isaretler { display: grid; gap: 12px; margin: 8px 0 0; padding: 0; list-style: none; }
.isaretler li { display: grid; grid-template-columns: 24px minmax(0, 1fr); gap: 12px; align-items: start; color: var(--ikincil); }
.isaretler svg { margin-top: 3px; color: var(--zumrut); }
.ders-sonu-gorsel { position: relative; padding-bottom: 18%; }
.ders-sonu-gorsel .proj-yoklama { position: absolute; right: 0; bottom: 0; width: 58%; }
@media (min-width: 900px) {
  .ders-sonu { padding-block: 40px 136px; }
  .ders-sonu-izgara { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 64px; align-items: center; }
  .ders-sonu-gorsel .proj-yoklama { right: -6%; bottom: -4%; width: 52%; }
}

.veri { padding-block: 72px; border-top: 1px solid var(--cizgi); }
.veri-bas { display: grid; gap: 16px; max-width: 46rem; }
.akis { margin-top: 48px; display: grid; gap: 16px; align-items: stretch; }
.akis-uc, .yol {
  border-radius: 16px; padding: 18px 20px; background: var(--kart); border: 1px solid var(--cizgi);
  display: grid; gap: 6px; align-content: start;
}
.akis-uc { grid-template-columns: 40px minmax(0, 1fr); column-gap: 14px; align-items: center; }
.akis-uc .ikon-kutu {
  grid-row: span 2; width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: var(--kart-soluk); color: var(--ikincil);
}
.akis-uc strong { color: var(--murekkep); font-size: 1.0625rem; }
.akis-uc span { font-size: var(--t-kucuk); color: var(--soluk); }
.akis-uc.hedef { border: 2px solid var(--zumrut); background: #ECFDF5; }
.akis-uc.hedef .ikon-kutu { background: var(--zumrut); color: #FFFFFF; }
.akis-uc.hedef span { color: var(--zumrut-koyu); }
.akis-yollar { display: grid; gap: 12px; }
.yol strong { color: var(--murekkep); font-size: 0.9375rem; }
.yol span { font-size: var(--t-kucuk); color: var(--ikincil); }
.yol .cizgi-akis { height: 6px; margin-top: 6px; border-radius: 3px; background-image: linear-gradient(90deg, var(--indigo) 50%, transparent 50%); background-size: 14px 6px; opacity: 0.55; }
.yol.yerel .cizgi-akis { background-image: linear-gradient(90deg, var(--zumrut) 50%, transparent 50%); }
@media (prefers-reduced-motion: no-preference) {
  .yol .cizgi-akis { animation: akis 1.4s linear infinite; }
}
@keyframes akis { to { background-position: 14px 0; } }
.veri-gercekler { margin-top: 40px; display: grid; gap: 16px; padding: 0; list-style: none; }
.veri-gercekler li { padding-top: 16px; border-top: 1px solid var(--cizgi); color: var(--ikincil); }
.veri-gercekler li strong { display: block; color: var(--murekkep); font-weight: 700; margin-bottom: 4px; }
@media (min-width: 900px) {
  .veri { padding-block: 128px; }
  .akis { grid-template-columns: minmax(0, 3fr) minmax(0, 4fr) minmax(0, 3fr); align-items: center; gap: 24px; }
  .veri-gercekler { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
}

.kurum { position: relative; overflow: hidden; padding-block: 72px; isolation: isolate; border-top: 1px solid var(--cizgi); }
.kurum-bas { display: grid; gap: 16px; max-width: 46rem; position: relative; z-index: 1; }
.kurum-kartlar { position: relative; z-index: 1; margin-top: 40px; display: grid; gap: 16px; }
.paket {
  border-radius: 20px; padding: 24px; display: grid; gap: 14px; align-content: start;
  background: rgba(255, 255, 255, 0.62); border: 1px solid rgba(255, 255, 255, 0.95);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  box-shadow: var(--golge-3);
}
.paket h3 { font-size: 1.375rem; font-weight: 800; letter-spacing: -0.02em; color: var(--murekkep); }
.paket p { color: var(--ikincil); }
.paket .dugme { justify-self: start; margin-top: 6px; }
.eposta { font-size: var(--t-kucuk); color: var(--soluk); }
.kurum .eposta { position: relative; z-index: 1; margin-top: 20px; }
.eposta span { color: var(--murekkep); font-weight: 600; user-select: all; }
@media (min-width: 760px) { .kurum-kartlar { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; } }
@media (min-width: 900px) { .kurum { padding-block: 128px; } .paket { padding: 32px; } }

.sss { padding-block: 72px 96px; border-top: 1px solid var(--cizgi); }
.sss-izgara { display: grid; gap: 32px; }
.sss-izgara > .veri-bas { align-self: start; }
.sss-liste { display: grid; border-top: 1px solid var(--cizgi); }
.sss details { border-bottom: 1px solid var(--cizgi); }
.sss summary {
  list-style: none; cursor: pointer; padding: 20px 4px; display: grid; grid-template-columns: minmax(0, 1fr) 24px; gap: 16px; align-items: center;
  font-weight: 700; font-size: 1.0625rem; color: var(--murekkep);
}
.sss summary::-webkit-details-marker { display: none; }
.sss summary svg { color: var(--soluk); transition: transform 0.25s ease; }
.sss details[open] summary svg { transform: rotate(45deg); }
.sss details p { padding: 0 4px 20px; max-width: 62ch; color: var(--ikincil); }
@media (min-width: 900px) {
  .sss { padding-block: 128px 144px; }
  .sss-izgara { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 64px; }
}

/* ---------- İndir: sahne yeniden kararır ---------- */
.indir { position: relative; overflow: hidden; background: var(--gece); padding-block: 104px 96px; isolation: isolate; }
.indir .huzme { height: 90%; }
.indir-izgara { position: relative; z-index: 1; display: grid; gap: 48px; align-items: center; }
.indir-metin { display: grid; gap: 18px; }
.indir h2 { font-size: var(--t-dev); line-height: 1.08; font-weight: 800; letter-spacing: -0.035em; color: #FFFFFF; }
.indir-kart {
  margin-top: 8px; padding: 20px; border-radius: 20px; display: grid; gap: 14px;
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.14);
}
.surum-satiri { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: var(--t-kucuk); color: var(--acik-soluk); font-variant-numeric: tabular-nums; }
.surum-satiri strong { color: #FFFFFF; font-size: 1rem; }
.indir-kart .dugme { width: 100%; }
.yenilikler { display: grid; gap: 6px; }
.yenilikler h3 { font-size: var(--t-kucuk); font-weight: 700; color: #FFFFFF; }
.yenilikler ul { margin: 0; padding-left: 18px; display: grid; gap: 4px; font-size: var(--t-kucuk); color: var(--acik-metin); }
.uyari { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 12px; }
.uyari summary { cursor: pointer; font-size: var(--t-kucuk); font-weight: 600; color: #FFFFFF; }
.uyari ol { margin: 10px 0 0; padding-left: 18px; display: grid; gap: 4px; font-size: var(--t-kucuk); color: var(--acik-metin); }
.indir-alt { display: grid; gap: 8px; font-size: var(--t-kucuk); color: var(--acik-soluk); }
.indir-alt strong { color: var(--acik-metin); }
@media (min-width: 560px) { .indir-kart .dugme { width: auto; justify-self: start; } }
@media (min-width: 900px) {
  .indir { padding-block: 144px 128px; }
  .indir-izgara { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 72px; }
  .indir-kart { padding: 24px; }
}

.alt {
  background: #08162A; color: var(--acik-soluk); padding-block: 48px calc(48px + env(safe-area-inset-bottom, 0px));
  font-size: var(--t-kucuk); border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.alt-izgara { display: grid; gap: 24px; }
.alt-ad { display: grid; gap: 8px; }
.alt .logo { color: #FFFFFF; }
.alt nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.alt nav a { color: var(--acik-metin); text-decoration: none; }
.alt nav a:hover { color: #FFFFFF; text-decoration: underline; }
@media (min-width: 900px) { .alt-izgara { grid-template-columns: minmax(0, 1fr) auto; align-items: end; } }

/* ---------- Tek ekranlık sayfalar: indirme ve bulunamadı ---------- */
.tek-sayfa {
  position: relative; overflow: hidden; isolation: isolate;
  min-height: 100vh; min-height: 100svh;
  display: grid; align-items: center;
  background: var(--gece);
  padding-block: calc(env(safe-area-inset-top, 0px) + 112px) calc(env(safe-area-inset-bottom, 0px) + 56px);
}
.tek-sayfa .huzme { height: 100%; }
.tek-sayfa-ic { position: relative; z-index: 1; display: grid; gap: 20px; justify-items: center; text-align: center; }
.tek-sayfa h1 { font-size: var(--t-dev); line-height: 1.08; font-weight: 800; letter-spacing: -0.035em; color: #FFFFFF; max-width: 16ch; }
.tek-sayfa .bolum-giris { max-width: 36rem; }
.tek-sayfa-dugmeler { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 4px; }
.sonraki {
  width: 100%; max-width: 34rem; margin: 20px 0 0; padding: 20px; list-style: none;
  display: grid; gap: 14px; text-align: left; counter-reset: sonraki;
  border-radius: 20px; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.14);
}
.sonraki li { counter-increment: sonraki; display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 12px; align-items: start; font-size: 0.9375rem; color: var(--acik-metin); }
.sonraki li::before {
  content: counter(sonraki); width: 28px; height: 28px; border-radius: 9999px; border: 2px solid var(--indigo-acik);
  color: var(--indigo-acik); font-size: 0.8125rem; font-weight: 800; display: grid; place-items: center; font-variant-numeric: tabular-nums;
}
.sonraki li span { padding-top: 2px; }
.sonraki strong { color: #FFFFFF; }
.tek-sayfa-not { font-size: var(--t-kucuk); color: var(--acik-soluk); max-width: 34rem; }
.tek-sayfa-not strong { color: var(--acik-metin); }
.secilir { color: #FFFFFF; font-weight: 700; user-select: all; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}