/* ============================================================
     HAKKINDA — sayfaya ozel katman (v14 token'lari uzerine)
     ============================================================ */

  /* Ic sayfa hero — fotograf tam genislikte section background'i.
     Fotograf aydinlik oldugu icin metin KOYU; koyu overlay kullanilmiyor
     (siyah takim koyu overlay icinde kaybolurdu). Sol tarafa beyaz
     scrim koyuluyor, kontrast garantisi icin. */
  .sayfa-hero {
    position: relative; overflow: hidden;
    background-color: #E9ECEE;
    background-size: cover;
    background-position: 70% center;
    background-repeat: no-repeat;
    min-height: min(92vh, 940px);
    display: flex; align-items: center;
    padding: 180px var(--dis-bosluk) 120px;
  }
  /* Beyaz scrim — soldan saga soner, portrenin oldugu tarafa dokunmaz */
  .sayfa-hero::before {
    content: ''; position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(to right,
      rgba(240,242,245,0.92) 0%,
      rgba(240,242,245,0.80) 26%,
      rgba(240,242,245,0.42) 46%,
      rgba(240,242,245,0.00) 62%);
  }
  .sayfa-hero-ic {
    position: relative; z-index: 2;
    max-width: var(--max-genislik); margin: 0 auto; width: 100%;
  }
  .sayfa-hero-metin { max-width: 46%; }
  .sayfa-hero-metin .bolum-eyebrow { color: var(--marka-koyu); }
  .sayfa-hero-baslik {
    font-family: var(--display); font-weight: 400;
    font-size: clamp(40px, 4.6vw, 68px);
    line-height: 1.05; letter-spacing: -0.025em;
    color: var(--metin); margin-bottom: 28px;
  }
  .sayfa-hero-baslik em { font-style: italic; color: var(--marka-koyu); }
  .sayfa-hero-unvan {
    font-family: var(--govde); font-size: 11px;
    letter-spacing: 0.3em; text-transform: uppercase;
    color: var(--metin); opacity: 0.80;   /* acik zeminde AA payi icin */
    margin-bottom: 36px;
  }
  .sayfa-hero-manifesto {
    font-family: var(--display); font-style: italic;
    font-size: clamp(20px, 2.1vw, 27px); line-height: 1.4;
    color: var(--metin); max-width: 440px;
    padding-left: 24px; border-left: 1px solid var(--marka-orta);
  }

  /* Nav — acik zeminli hero uzerinde koyu logo/metin */
  /* nav.acik kuralları ortak.css'e taşındı. */

  /* Yaklasim — editoryal metin + calisma kolaji */
  /* Yaklasim — uzun metin + saga tam yukseklikte tek gorsel.
     align-items: stretch sayesinde gorsel metnin boyuna uzuyor,
     metin uzasa da altta bosluk olusmuyor. */
  .yaklasim-blok {
    display: grid; grid-template-columns: 6fr 5fr;
    gap: 80px; align-items: stretch;
  }
  .yaklasim-metin p {
    color: var(--metin-yumusak); line-height: 1.8;
    margin-bottom: 22px; max-width: 520px;
  }
  .yaklasim-metin p:last-child { margin-bottom: 0; }
  .yaklasim-metin p strong {
    color: var(--metin); font-weight: 400;
  }
  .yaklasim-gorsel {
    min-width: 0; min-height: 480px;
    background-size: cover; background-position: center;
    background-color: var(--zemin-orta);
  }

  /* Meet Dr. — portre + egitim gecmisi + zaman cizgisi */
  .tanis-blok {
    display: grid; grid-template-columns: 5fr 7fr;
    gap: 80px; align-items: start;
  }
  .tanis-portre {
    aspect-ratio: 2 / 3; background-size: cover;
    background-position: center;
    background-color: var(--zemin-derin-orta);
  }
  /* Grid cocuklari — uzun icerikte tasmayi engeller */
  .tanis-icerik, .egitim-yan { min-width: 0; }
  .tanis-giris {
    font-family: var(--display); font-style: italic; font-weight: 400;
    font-size: clamp(19px, 1.9vw, 25px); line-height: 1.5;
    color: #F0F2F5; margin-bottom: 44px; max-width: 620px;
  }

  /* Sol kolon — portre + kunye alt alta */
  .tanis-sol { display: flex; flex-direction: column; gap: 40px; }

  /* Bolum ici alt baslik (koyu zeminde) */
  .alt-baslik {
    font-family: var(--govde); font-size: 10px;
    letter-spacing: 0.3em; text-transform: uppercase;
    color: var(--marka-orta); margin-bottom: 22px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(180,210,232,0.18);
  }

  /* Egitim gecmisi — tarihi verilmeyen okullar */
  .okul-listesi { list-style: none; margin-bottom: 56px; }
  .okul-satir {
    padding: 15px 0; border-bottom: 1px solid rgba(180,210,232,0.10);
  }
  .okul-etiket {
    display: block; font-family: var(--govde); font-size: 10px;
    letter-spacing: 0.26em; text-transform: uppercase;
    color: var(--marka-orta); margin-bottom: 7px;
  }
  .okul-ad {
    display: block; font-family: var(--display);
    font-size: 19px; line-height: 1.35; color: #E5E8EB;
    letter-spacing: -0.01em;
  }

  /* Zaman cizgisi — tarihli kilometre taslari */
  .zaman-cizgisi { list-style: none; position: relative; }
  .zaman-madde {
    position: relative; padding: 0 0 38px 40px;
    opacity: 0; transform: translateY(14px);
    transition: opacity 800ms ease-out, transform 800ms ease-out;
  }
  .gorunur .zaman-madde { opacity: 1; transform: translateY(0); }
  .zaman-madde:nth-child(1) { transition-delay: 100ms; }
  .zaman-madde:nth-child(2) { transition-delay: 220ms; }
  .zaman-madde:nth-child(3) { transition-delay: 340ms; }
  .zaman-madde:nth-child(4) { transition-delay: 460ms; }
  .zaman-madde:nth-child(5) { transition-delay: 580ms; }
  /* dikey cizgi */
  .zaman-madde::before {
    content: ''; position: absolute; left: 5px; top: 16px; bottom: -6px;
    width: 1px; background: rgba(180,210,232,0.20);
  }
  .zaman-madde:last-child::before { display: none; }
  /* nokta */
  .zaman-madde::after {
    content: ''; position: absolute; left: 0; top: 8px;
    width: 11px; height: 11px; border-radius: 50%;
    border: 1px solid var(--marka-orta); background: var(--zemin-derin);
    transition: background 500ms, border-color 500ms;
  }
  .zaman-madde:hover::after { background: var(--marka-solgun); border-color: var(--marka-solgun); }
  .zaman-yil {
    display: block; font-family: var(--govde); font-size: 11px;
    letter-spacing: 0.28em; color: var(--marka-solgun);
    margin-bottom: 9px;
  }
  .zaman-baslik {
    display: block; font-family: var(--display); font-weight: 400;
    font-size: clamp(20px, 2vw, 25px); line-height: 1.25;
    color: #F0F2F5; margin-bottom: 11px; letter-spacing: -0.01em;
  }
  .zaman-metin {
    font-size: 15px; line-height: 1.78; color: #A9B6C0; max-width: 560px;
  }

  /* Kunye — uyelik ve sertifika */
  .kunye { min-width: 0; }
  .kunye-listesi { list-style: none; }
  .kunye-satir {
    padding: 14px 0; border-bottom: 1px solid rgba(180,210,232,0.10);
  }
  .kunye-kisa {
    display: block; font-family: var(--display); font-size: 17px;
    color: #E5E8EB; margin-bottom: 4px;
  }
  .kunye-acik {
    display: block; font-family: var(--govde); font-size: 12px;
    line-height: 1.55; color: #8D9BA6;
  }

  /* Egitim */
  .egitim-blok {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 80px; align-items: start;
  }
  .egitim-metin p {
    color: var(--metin-yumusak); line-height: 1.8;
    margin-bottom: 22px; max-width: 500px;
  }
  .egitim-metin p strong { color: var(--metin); font-weight: 400; }
  .egitim-yan-baslik {
    font-family: var(--govde); font-size: 10px;
    letter-spacing: 0.3em; text-transform: uppercase;
    color: var(--metin-yumusak); margin-bottom: 24px;
    padding-bottom: 14px; border-bottom: 1px solid var(--cizgi);
  }
  .sehir-listesi { list-style: none; }
  .sehir-listesi li {
    display: grid; grid-template-columns: auto 1fr;
    gap: 18px; align-items: baseline;
    padding: 17px 0; border-bottom: 1px solid var(--cizgi);
    opacity: 0; transform: translateY(10px);
    transition: opacity 700ms ease-out, transform 700ms ease-out;
  }
  .gorunur .sehir-listesi li { opacity: 1; transform: translateY(0); }
  .sehir-listesi li:nth-child(1) { transition-delay: 80ms; }
  .sehir-listesi li:nth-child(2) { transition-delay: 180ms; }
  .sehir-listesi li:nth-child(3) { transition-delay: 280ms; }
  .sehir-listesi li:nth-child(4) { transition-delay: 380ms; }
  .sehir-listesi li:nth-child(5) { transition-delay: 480ms; }
  .sehir-listesi li:nth-child(6) { transition-delay: 580ms; }
  .sehir-ad {
    font-family: var(--display); font-size: 21px;
    color: var(--metin); letter-spacing: -0.01em;
  }
  .sehir-not {
    font-family: var(--govde); font-size: 11px;
    letter-spacing: 0.2em; text-transform: uppercase;
    color: var(--metin-yumusak); text-align: right;
  }
  .egitim-konular {
    margin-top: 36px; padding-top: 26px;
    border-top: 1px solid var(--cizgi);
    display: flex; flex-wrap: wrap; gap: 8px; list-style: none;
  }
  .egitim-konular li {
    font-family: var(--govde); font-size: 11px;
    letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--marka-koyu);
    border: 1px solid var(--cizgi); padding: 7px 14px;
  }

  /* Kopru kartlari */
  .kopru-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
  }
  .kopru-kart {
    position: relative; display: block; text-decoration: none;
    aspect-ratio: 4 / 5; overflow: hidden;
    background: var(--zemin-derin);
  }
  .kopru-kart-gorsel {
    position: absolute; inset: 0;
    background-size: cover; background-position: center;
    transform: scale(1.02);
    transition: transform 1200ms ease-out, opacity 600ms;
    opacity: 0.62;
  }
  .kopru-kart:hover .kopru-kart-gorsel { transform: scale(1.08); opacity: 0.42; }
  .kopru-kart::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(30,42,50,0.88), rgba(30,42,50,0.15) 60%);
  }
  .kopru-kart-icerik {
    position: absolute; left: 0; right: 0; bottom: 0;
    padding: 36px 32px; z-index: 2;
  }
  .kopru-kart-icerik h4 {
    font-family: var(--display); font-weight: 400; font-size: 26px;
    color: #F0F2F5; margin-bottom: 10px; letter-spacing: -0.01em;
  }
  .kopru-kart-icerik p {
    font-size: 14px; color: #B9C5CE; line-height: 1.6; margin-bottom: 16px;
  }
  .kopru-ok {
    font-family: var(--govde); font-size: 10px;
    letter-spacing: 0.28em; text-transform: uppercase;
    color: var(--marka-solgun);
  }

  /* Kapanis manifesto seridi */
  .manifesto-serit {
    text-align: center; padding: 0 var(--dis-bosluk);
    max-width: 820px; margin: 0 auto;
  }
  .manifesto-serit p {
    font-family: var(--display); font-style: italic; font-weight: 400;
    font-size: clamp(26px, 3vw, 40px); line-height: 1.3;
    color: var(--metin); letter-spacing: -0.02em;
  }
  .manifesto-serit .imza {
    font-family: var(--govde); font-style: normal;
    font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase;
    color: var(--metin-yumusak); margin-top: 32px;
  }

  @media (max-width: 1100px) {
    .kopru-grid { grid-template-columns: 1fr 1fr; }
    .sayfa-hero-metin { max-width: 58%; }
    .tanis-blok, .egitim-blok { gap: 48px; }
  }
  @media (max-width: 900px) {
    /* Dar ekranda cover yatay fotografi sert kirpar; scrim dikey olur,
       metin ustte, portre altta gorunur kalir */
    .sayfa-hero {
      min-height: 82vh; align-items: flex-start;
      background-position: 72% center;
      padding: 140px 24px 80px;
    }
    .sayfa-hero::before {
      background: linear-gradient(to bottom,
        rgba(240,242,245,0.94) 0%,
        rgba(240,242,245,0.86) 38%,
        rgba(240,242,245,0.40) 62%,
        rgba(240,242,245,0.00) 82%);
    }
    .sayfa-hero-metin { max-width: 100%; }
    .sayfa-hero-manifesto { max-width: 100%; }
    .yaklasim-blok { grid-template-columns: 1fr; gap: 40px; }
    .yaklasim-gorsel { min-height: 0; aspect-ratio: 4 / 5; }
    .kopru-grid { grid-template-columns: 1fr; }
    .tanis-blok, .egitim-blok { grid-template-columns: 1fr; gap: 44px; }
    .tanis-portre { aspect-ratio: 2 / 3; }
    .sehir-not { text-align: left; }
  }
  /* ============================================================
     KİLOMETRE TAŞLARI — dikey akordiyon + ilerleyen zaman çizgisi
     Aktif madde açık kalır, dikey çizgi bir sonraki noktaya doğru
     süre boyunca dolar, dolunca sıradaki maddeye geçilir.
     ============================================================ */

  /* Başlık artık düğme — tarayıcı varsayılanlarını sıfırla */
  .zaman-basi {
    display: block; width: 100%; padding: 0; border: 0; background: none;
    font: inherit; color: inherit; text-align: left; cursor: pointer;
    -webkit-appearance: none; appearance: none;
  }
  .zaman-basi:focus-visible {
    outline: 1px solid var(--marka-solgun); outline-offset: 6px;
  }
  .zaman-basi .zaman-baslik { transition: color 400ms ease; }
  .zaman-madde:not(.acik) .zaman-basi:hover .zaman-baslik { color: var(--marka-solgun); }

  /* Çizginin dolan kısmı — ::before'daki soluk rayın üzerine biner */
  .zaman-dolgu {
    position: absolute; left: 5px; top: 16px; bottom: -6px; width: 1px;
    background: var(--marka-solgun);
    transform: scaleY(0); transform-origin: top center;
  }
  .zaman-madde:last-child .zaman-dolgu { display: none; }
  /* Süre CSS değişkeninden gelir, JS ile de ayarlanabilir */
  .zaman-madde.acik .zaman-dolgu {
    transform: scaleY(1);
    transition: transform var(--zaman-sure, 6500ms) linear;
  }
  .zaman-madde.tamam .zaman-dolgu { transform: scaleY(1); }

  /* Nokta: aktifken dolu ve halkalı, tamamlananda soluk dolu */
  .zaman-madde.acik::after {
    background: var(--marka-solgun); border-color: var(--marka-solgun);
    box-shadow: 0 0 0 4px rgba(180, 210, 232, 0.12);
  }
  .zaman-madde.tamam::after {
    background: var(--marka-orta); border-color: var(--marka-orta);
  }

  /* Akordiyon gövdesi — yükseklik JS tarafından ayarlanır */
  .zaman-govde {
    overflow: hidden; max-height: 0; opacity: 0;
    transition: max-height 520ms cubic-bezier(0.4, 0, 0.2, 1),
                opacity 380ms ease;
  }
  .zaman-madde.acik .zaman-govde { opacity: 1; }
  .zaman-govde .zaman-metin { padding-top: 2px; }

  /* Kapalı maddeler arası boşluk biraz daralsın */
  .zaman-madde { padding-bottom: 30px; }
  .zaman-madde.acik { padding-bottom: 38px; }

  /* Hareket azaltma tercihi: hepsi açık, animasyon yok */
  @media (prefers-reduced-motion: reduce) {
    .zaman-govde { max-height: none !important; opacity: 1; transition: none; }
    .zaman-dolgu { transform: scaleY(1); transition: none; }
    .zaman-madde::after { background: var(--marka-orta); border-color: var(--marka-orta); }
  }