/* ChapterHub — site stili
   Mürekkep laciverti + cilt bordosu, kitap tipografisi (Literata) + arayüz (IBM Plex Sans) */

:root {
  --murekkep: #16233F;
  --murekkep-2: #2A3A5E;
  --cilt: #8C2F39;
  --cilt-koyu: #6E232C;
  --kagit: #F7F7F4;
  --beyaz: #FFFFFF;
  --cizgi: #D9DCE1;
  --metin: #1F2430;
  --soluk: #5B6272;
  --yesil: #2F6B4F;
  --sari: #9A6A12;
  --serif: "Literata", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --r-kucuk: 4px;
  --r: 8px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--kagit); color: var(--metin);
  font-family: var(--sans); font-size: 1rem; line-height: 1.6;
  display: flex; flex-direction: column; min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--murekkep); text-underline-offset: 3px; }
a:hover { color: var(--cilt); }
:focus-visible { outline: 3px solid var(--cilt); outline-offset: 2px; border-radius: 2px; }

h1, h2, h3, h4 { font-family: var(--serif); color: var(--murekkep); line-height: 1.2; margin: 0 0 .5em; font-weight: 600; }
h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }

.kap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.dar { max-width: 760px; }
.soluk { color: var(--soluk); }
.kucuk { font-size: .875rem; }
.gizli { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
main { flex: 1; }

/* ---------- Üst şerit ve başlık ---------- */
.duyuru { background: var(--murekkep); color: #E6E9F0; font-size: .875rem; }
.duyuru .kap { display: flex; gap: 12px; justify-content: center; align-items: center; padding-top: 8px; padding-bottom: 8px; flex-wrap: wrap; text-align: center; }
.duyuru a { color: #fff; font-weight: 500; }

.ust { background: var(--beyaz); border-bottom: 1px solid var(--cizgi); position: sticky; top: 0; z-index: 20; }
.ust .kap { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; font-family: var(--serif); font-size: 1.35rem; font-weight: 600; color: var(--murekkep); }
.logo svg { flex: none; }
.menu { display: flex; gap: 22px; flex: 1; }
.menu a { text-decoration: none; color: var(--metin); font-size: .95rem; padding: 6px 0; border-bottom: 2px solid transparent; }
.menu a:hover, .menu a[aria-current="page"] { color: var(--murekkep); border-bottom-color: var(--cilt); }
.ust-sag { display: flex; align-items: center; gap: 14px; }
.dil { display: flex; border: 1px solid var(--cizgi); border-radius: var(--r-kucuk); overflow: hidden; }
.dil button { background: none; border: 0; padding: 4px 9px; font: 500 .8rem var(--sans); color: var(--soluk); cursor: pointer; }
.dil button[aria-pressed="true"] { background: var(--murekkep); color: #fff; }
.menu-ac { display: none; background: none; border: 1px solid var(--cizgi); border-radius: var(--r-kucuk); padding: 6px 10px; font: inherit; cursor: pointer; }

/* ---------- Butonlar ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 11px 20px; border-radius: var(--r-kucuk); border: 1px solid var(--cilt); background: var(--cilt); color: #fff; font: 600 .95rem var(--sans); text-decoration: none; cursor: pointer; transition: background .15s; }
.btn:hover { background: var(--cilt-koyu); border-color: var(--cilt-koyu); color: #fff; }
.btn-ikincil { background: transparent; color: var(--murekkep); border-color: var(--murekkep); }
.btn-ikincil:hover { background: var(--murekkep); color: #fff; border-color: var(--murekkep); }
.btn-kucuk { padding: 7px 14px; font-size: .875rem; }
.btn-tam { width: 100%; }
.btn-acik { background: #fff; color: var(--murekkep); border-color: #fff; }
.btn-acik:hover { background: #E6E9F0; color: var(--murekkep); border-color: #E6E9F0; }

/* ---------- Kahraman alanı + içindekiler ---------- */
.kahraman { padding: 72px 0 80px; }
.kahraman .kap { display: grid; grid-template-columns: 1fr 1.05fr; gap: 64px; align-items: center; }
.kahraman h1 { max-width: 15ch; }
.kahraman .giris { font-size: 1.125rem; color: var(--soluk); max-width: 46ch; }
.eylemler { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 22px; }
.geri-sayim { font-size: .95rem; color: var(--metin); border-left: 3px solid var(--cilt); padding-left: 12px; }
.geri-sayim strong { font-family: var(--serif); font-size: 1.15rem; color: var(--cilt); }

.icindekiler { position: relative; background: var(--beyaz); border: 1px solid var(--cizgi); padding: 36px 40px 30px; }
.icindekiler::before { content: ""; position: absolute; inset: 10px -10px -10px 10px; border: 1px solid var(--cizgi); background: var(--beyaz); z-index: -1; }
.icindekiler .baslik { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 22px; border-bottom: 1px solid var(--murekkep); padding-bottom: 12px; }
.icindekiler .baslik h2 { font-style: italic; font-weight: 500; margin: 0; font-size: 1.6rem; }
.icindekiler ol { list-style: none; margin: 0; padding: 0; }
.icindekiler li a { display: grid; grid-template-columns: 2.2em auto 1fr auto; align-items: baseline; gap: 10px; padding: 9px 0; text-decoration: none; color: var(--metin); }
.icindekiler li a:hover .ic-baslik { color: var(--cilt); }
.ic-no { font-family: var(--serif); color: var(--cilt); font-variant-numeric: oldstyle-nums; }
.ic-baslik { font-family: var(--serif); font-size: 1.02rem; line-height: 1.35; max-width: 30ch; }
.ic-nokta { border-bottom: 2px dotted #AEB3BD; transform: translateY(-5px); transform-origin: left; animation: nokta 900ms ease-out both; }
.ic-alan { font-size: .82rem; color: var(--soluk); white-space: nowrap; }
.icindekiler li:nth-child(2) .ic-nokta { animation-delay: 90ms; }
.icindekiler li:nth-child(3) .ic-nokta { animation-delay: 180ms; }
.icindekiler li:nth-child(4) .ic-nokta { animation-delay: 270ms; }
.icindekiler li:nth-child(5) .ic-nokta { animation-delay: 360ms; }
.icindekiler li:nth-child(6) .ic-nokta { animation-delay: 450ms; }
.icindekiler .tumu { display: block; margin-top: 18px; font-size: .9rem; font-weight: 500; }
@keyframes nokta { from { transform: translateY(-5px) scaleX(0); } to { transform: translateY(-5px) scaleX(1); } }

/* ---------- Bölümler ---------- */
.bolum { padding: 72px 0; border-top: 1px solid var(--cizgi); }
.bolum-beyaz { background: var(--beyaz); }
.bolum-bas { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 36px; flex-wrap: wrap; }
.bolum-bas p { margin: 0; color: var(--soluk); max-width: 56ch; }

/* Süreç (gerçek bir sıra olduğu için numaralı) */
.surec { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; counter-reset: adim; }
.surec li { counter-increment: adim; position: relative; padding-top: 56px; }
.surec li::before { content: counter(adim); position: absolute; top: 0; left: 0; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--murekkep); display: grid; place-items: center; font-family: var(--serif); font-size: 1.1rem; color: var(--murekkep); background: var(--beyaz); z-index: 1; }
.surec li:not(:last-child)::after { content: ""; position: absolute; top: 20px; left: 48px; right: -24px; border-top: 1px solid var(--cizgi); }
.surec h3 { font-size: 1.1rem; }
.surec p { color: var(--soluk); font-size: .95rem; margin: 0; }

/* Alanlar dizini */
.dizin { columns: 3 280px; column-gap: 48px; }
.dizin-grup { break-inside: avoid; padding: 0 0 22px; margin-bottom: 22px; border-bottom: 1px solid var(--cizgi); }
.dizin-grup h3 { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 6px; }
.dizin-grup h3 a { text-decoration: none; }
.dizin-grup h3 a:hover { color: var(--cilt); }
.dizin-sayi { font-family: var(--sans); font-size: .8rem; font-weight: 500; color: var(--cilt); white-space: nowrap; align-self: center; }
.dizin-grup p { font-size: .9rem; color: var(--soluk); margin: 0; }

/* Tarihler */
.tarihler { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--cizgi); }
.tarihler li { position: relative; padding: 0 0 22px 26px; }
.tarihler li::before { content: ""; position: absolute; left: -5px; top: 8px; width: 9px; height: 9px; border-radius: 50%; background: var(--beyaz); border: 2px solid var(--murekkep); }
.tarihler li.gecti::before { background: var(--murekkep); }
.tarihler time { display: block; font-family: var(--serif); font-weight: 600; color: var(--murekkep); }
.tarihler span { color: var(--soluk); }
.iki-sutun { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }

/* SSS */
.sss details { border-bottom: 1px solid var(--cizgi); }
.sss summary { cursor: pointer; list-style: none; padding: 18px 36px 18px 0; position: relative; font-family: var(--serif); font-size: 1.08rem; color: var(--murekkep); }
.sss summary::-webkit-details-marker { display: none; }
.sss summary::after { content: "+"; position: absolute; right: 4px; top: 14px; font: 400 1.5rem var(--sans); color: var(--cilt); transition: transform .2s; }
.sss details[open] summary::after { transform: rotate(45deg); }
.sss .cevap { padding: 0 0 20px; color: var(--soluk); max-width: 70ch; }

/* Çağrı bandı */
.cagri { background: var(--murekkep); color: #D5DAE5; padding: 64px 0; }
.cagri .kap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.cagri h2 { color: #fff; font-size: 1.6rem; }
.cagri p { max-width: 44ch; }
.cagri .ayrac { border-left: 1px solid rgba(255,255,255,.18); padding-left: 56px; }

/* ---------- Sayfa başlığı ---------- */
.sayfa-bas { padding: 48px 0 32px; border-bottom: 1px solid var(--cizgi); background: var(--beyaz); }
.sayfa-bas p { color: var(--soluk); max-width: 60ch; margin: 0; }
.yol { font-size: .85rem; color: var(--soluk); margin-bottom: 10px; }
.yol a { color: var(--soluk); }
.icerik { padding: 40px 0 72px; }

/* ---------- Kitap listesi ---------- */
.liste-duzen { display: grid; grid-template-columns: 260px 1fr; gap: 48px; }
.filtre h3 { font-family: var(--sans); font-size: .85rem; font-weight: 600; color: var(--soluk); margin: 24px 0 8px; }
.filtre h3:first-child { margin-top: 0; }
.filtre ul { list-style: none; margin: 0; padding: 0; }
.filtre li a { display: flex; justify-content: space-between; padding: 5px 8px; margin: 0 -8px; border-radius: var(--r-kucuk); text-decoration: none; color: var(--metin); font-size: .93rem; }
.filtre li a:hover { background: #ECEDEF; }
.filtre li a.secili { background: var(--murekkep); color: #fff; }
.arama { display: flex; gap: 8px; margin-bottom: 24px; }
.arama input { flex: 1; }
.sonuc-bilgi { color: var(--soluk); font-size: .9rem; margin-bottom: 12px; }
.kitap-satir { display: grid; grid-template-columns: 1fr auto; gap: 8px 24px; padding: 22px 0; border-top: 1px solid var(--cizgi); }
.kitap-satir:last-child { border-bottom: 1px solid var(--cizgi); }
.kitap-satir h3 { margin: 0 0 4px; font-size: 1.15rem; }
.kitap-satir h3 a { text-decoration: none; }
.kitap-satir h3 a:hover { color: var(--cilt); }
.kitap-satir .alt { font-size: .88rem; color: var(--soluk); }
.kitap-satir .sag { text-align: right; font-size: .85rem; color: var(--soluk); }

.etiket { display: inline-block; font-size: .78rem; font-weight: 500; padding: 2px 9px; border-radius: 999px; border: 1px solid currentColor; white-space: nowrap; }
.e-bolum_toplaniyor { color: var(--yesil); }
.e-planlaniyor { color: var(--sari); }
.e-incelemede { color: var(--murekkep-2); }
.e-yayinlandi { color: var(--cilt); }

.bos { padding: 48px 24px; text-align: center; border: 1px dashed var(--cizgi); border-radius: var(--r); background: var(--beyaz); }
.bos p { color: var(--soluk); }

/* ---------- Kitap detay ---------- */
.detay-duzen { display: grid; grid-template-columns: 1fr 320px; gap: 56px; align-items: start; }
.detay-duzen .metin { max-width: 70ch; font-family: var(--serif); font-size: 1.05rem; line-height: 1.75; }
.konular { list-style: none; padding: 0; margin: 0 0 32px; counter-reset: konu; }
.konular li { counter-increment: konu; display: grid; grid-template-columns: 2em 1fr; padding: 8px 0; border-bottom: 1px dotted var(--cizgi); }
.konular li::before { content: counter(konu) "."; color: var(--cilt); font-family: var(--serif); }
.kutu { background: var(--beyaz); border: 1px solid var(--cizgi); border-radius: var(--r); padding: 24px; position: sticky; top: 92px; }
.kutu dl { margin: 18px 0 0; font-size: .9rem; }
.kutu dt { color: var(--soluk); margin-top: 10px; }
.kutu dd { margin: 2px 0 0; font-weight: 500; }
.kutu .kalan { font-family: var(--serif); font-size: 2rem; color: var(--cilt); line-height: 1; margin: 12px 0 4px; }
.kapak { border: 1px solid var(--cizgi); margin-bottom: 16px; }

/* ---------- Formlar ---------- */
.form-kart { background: var(--beyaz); border: 1px solid var(--cizgi); border-radius: var(--r); padding: 36px; }
.form-kart.dar-form { max-width: 480px; margin: 0 auto; }
.alan { margin-bottom: 20px; }
.alan label, .alan .etiket-baslik { display: block; font-weight: 500; font-size: .93rem; margin-bottom: 6px; }
.alan .zorunlu { color: var(--cilt); }
input[type=text], input[type=email], input[type=password], input[type=url], input[type=search], input[type=number], select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid #C3C8D0; border-radius: var(--r-kucuk); background: #fff;
  font: inherit; color: var(--metin); transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--murekkep); box-shadow: 0 0 0 3px rgba(22,35,63,.15); }
input[type=file] { font-size: .9rem; }
.yardim { font-size: .84rem; color: var(--soluk); margin-top: 5px; }
.hata { font-size: .86rem; color: #B42318; margin-top: 5px; }
.hata-kutu { background: #FEF3F2; border: 1px solid #FDA29B; color: #912018; padding: 12px 16px; border-radius: var(--r-kucuk); margin-bottom: 20px; font-size: .92rem; }
.secenekler { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 6px 18px; max-height: 280px; overflow-y: auto; padding: 12px; border: 1px solid #C3C8D0; border-radius: var(--r-kucuk); }
.secenekler label { font-weight: 400; font-size: .9rem; display: flex; gap: 8px; margin: 0; }
.form-bolum { border: 0; padding: 0; margin: 0 0 28px; }
.form-bolum legend { font-family: var(--serif); font-size: 1.2rem; color: var(--murekkep); margin-bottom: 14px; padding: 0; }
.ikili { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
.ortak-yazar { border: 1px solid var(--cizgi); border-radius: var(--r); padding: 18px 18px 0; margin-bottom: 14px; }
.ortak-yazar .ikili { grid-template-columns: 2fr 2fr 1fr; }

/* ---------- Mesajlar ---------- */
.mesajlar { margin: 20px auto 0; }
.mesaj { padding: 12px 16px; border-radius: var(--r-kucuk); border: 1px solid; font-size: .93rem; margin-bottom: 8px; }
.mesaj-success { background: #ECFDF3; border-color: #A6E3BF; color: #1D5B3A; }
.mesaj-error, .mesaj-warning { background: #FEF3F2; border-color: #FDA29B; color: #912018; }
.mesaj-info { background: #EEF2F8; border-color: #C8D2E3; color: var(--murekkep); }

/* ---------- Panel ---------- */
.panel-bas { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.basvuru { background: var(--beyaz); border: 1px solid var(--cizgi); border-radius: var(--r); padding: 22px 24px; margin-bottom: 14px; }
.basvuru-ust { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.basvuru h3 { margin: 0 0 2px; font-size: 1.1rem; }
.basvuru h3 a { text-decoration: none; }
.asama { list-style: none; margin: 20px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); }
.asama li { position: relative; font-size: .82rem; color: var(--soluk); padding-top: 22px; }
.asama li::before { content: ""; position: absolute; top: 3px; left: 0; width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--cizgi); background: #fff; z-index: 1; }
.asama li:not(:last-child)::after { content: ""; position: absolute; top: 9px; left: 12px; right: 0; border-top: 2px solid var(--cizgi); }
.asama li.tamam { color: var(--metin); }
.asama li.tamam::before { background: var(--yesil); border-color: var(--yesil); }
.asama li.tamam::after { border-color: var(--yesil); }
.asama li.simdi { color: var(--murekkep); font-weight: 600; }
.asama li.simdi::before { border-color: var(--murekkep); box-shadow: 0 0 0 4px rgba(22,35,63,.12); }
.asama li.red { color: #B42318; font-weight: 600; }
.asama li.red::before { background: #B42318; border-color: #B42318; }
.yan-liste { list-style: none; margin: 0; padding: 0; }
.yan-liste li { display: flex; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--cizgi); font-size: .93rem; }

/* ---------- Metin sayfaları ---------- */
.nesir { font-family: var(--serif); font-size: 1.06rem; line-height: 1.8; max-width: 70ch; }
.nesir h2 { font-size: 1.45rem; margin-top: 1.6em; }
.nesir h3 { margin-top: 1.4em; }
.nesir ul, .nesir ol { padding-left: 1.3em; }
.nesir li { margin-bottom: .4em; }
.nesir table { border-collapse: collapse; width: 100%; font-family: var(--sans); font-size: .95rem; margin: 1em 0 1.5em; }
.nesir th, .nesir td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--cizgi); }
.nesir th { color: var(--soluk); font-weight: 500; }
.not-kutu { font-family: var(--sans); font-size: .93rem; background: #EEF2F8; border-left: 3px solid var(--murekkep); padding: 14px 18px; margin: 1.5em 0; }

/* ---------- Alt bilgi ---------- */
.alt-bilgi { background: var(--beyaz); border-top: 1px solid var(--cizgi); padding: 48px 0 28px; font-size: .92rem; }
.alt-bilgi .kap > .sutunlar { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.alt-bilgi h4 { font-family: var(--sans); font-size: .85rem; color: var(--soluk); font-weight: 600; margin-bottom: 10px; }
.alt-bilgi ul { list-style: none; margin: 0; padding: 0; }
.alt-bilgi li { margin-bottom: 6px; }
.alt-bilgi li a { text-decoration: none; color: var(--metin); }
.alt-bilgi li a:hover { color: var(--cilt); }
.telif { margin-top: 36px; padding-top: 18px; border-top: 1px solid var(--cizgi); color: var(--soluk); font-size: .85rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

/* ---------- Duyarlı ---------- */
@media (max-width: 980px) {
  .kahraman .kap, .iki-sutun, .cagri .kap, .detay-duzen, .liste-duzen { grid-template-columns: 1fr; gap: 40px; }
  .cagri .ayrac { border-left: 0; padding-left: 0; border-top: 1px solid rgba(255,255,255,.18); padding-top: 40px; }
  .surec { grid-template-columns: 1fr 1fr; }
  .surec li::after { display: none; }
  .alt-bilgi .kap > .sutunlar { grid-template-columns: 1fr 1fr; }
  .kutu { position: static; }
}
@media (max-width: 860px) {
  .menu-ac { display: inline-block; }
  .menu { display: none; position: absolute; top: 68px; left: 0; right: 0; background: var(--beyaz); flex-direction: column; gap: 0; padding: 8px 24px 16px; border-bottom: 1px solid var(--cizgi); }
  .menu.acik { display: flex; }
  .menu a { padding: 12px 0; border-bottom: 1px solid var(--cizgi); }
  .ust .kap { justify-content: space-between; }
  .ust-sag .btn-giris { display: none; }
}
@media (max-width: 600px) {
  .kap { padding: 0 18px; }
  .kahraman { padding: 44px 0 56px; }
  .icindekiler { padding: 26px 22px 22px; }
  .icindekiler li a { grid-template-columns: 1.8em 1fr; }
  .ic-nokta, .ic-alan { display: none; }
  .surec, .ikili, .ortak-yazar .ikili, .asama { grid-template-columns: 1fr; }
  .asama li { padding: 0 0 8px 22px; }
  .asama li::before { top: 4px; }
  .asama li::after { display: none; }
  .form-kart { padding: 24px 20px; }
  .kitap-satir { grid-template-columns: 1fr; }
  .kitap-satir .sag { text-align: left; }
  .alt-bilgi .kap > .sutunlar { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}