:root,
:root[data-theme="dark"] {
  --bg: #0d1117;
  --bg-elev: #161b22;
  --border: #232a33;
  --text: #e6edf3;
  --text-muted: #9aa7b4;
  --accent: #38bdf8;
  --accent-hover: #7dd3fc;
  --accent-2: #8b5cf6;
  --accent-rgb: 56, 189, 248;
  --header-bg: rgba(13, 17, 23, 0.85);
  --title-fade: #b6c2cf;
  --radius: 12px;
  --radius-sm: 8px;
  --container: 1040px;
}

/* Açık tema — marka cyan/mor paletinin aydınlık varyantı (theme.js + toggle ile). */
:root[data-theme="light"] {
  --bg: #f6f8fc;
  --bg-elev: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #55617a;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;
  --accent-2: #7c3aed;
  --accent-rgb: 14, 165, 233;
  --header-bg: rgba(255, 255, 255, 0.85);
  --title-fade: #475569;
}

* { box-sizing: border-box; }

html { font-size: 16px; }

/* Tema geçişinde renkler yumuşak değişsin (reduced-motion bloğunda nötrlenir). */
body, .site-header, .site-footer, .post-card, .placeholder-card, .btn {
  transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Erişilebilirlik: klavye kullanıcısı için içeriğe atlama linki (WCAG 2.4.1).
   Normalde ekran dışında; yalnız odaklanınca belirir. */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 5000;
  background: var(--accent);
  color: #0d1117;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 1rem; }
.site-main:focus { outline: none; }

/* Görünür klavye-odak göstergesi (WCAG 2.4.7). :focus-visible → yalnız klavye/
   programatik odakta belirir, fare tıklamasında değil. outline-offset sayesinde
   accent-zeminli butonlarda bile halka sayfa arkaplanında görünür kalır. */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--header-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-weight: 700;
}
.brand:hover { color: var(--text); }
/* Wordmark logosu — şeffaf zemin + site paleti; aktif temaya göre dark/light değişir. */
.brand__logo {
  display: block;
  height: 40px;
  width: auto;
}
.brand__logo--light { display: none; }
[data-theme="light"] .brand__logo--dark { display: none; }
[data-theme="light"] .brand__logo--light { display: block; }
.brand__sub {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.4px;
}
.site-nav { display: flex; align-items: center; gap: 1.25rem; }
.nav-link { color: var(--text-muted); font-weight: 500; }
.nav-link:hover { color: var(--text); }

/* Tema toggle — diğer sitelerdeki (.theme-toggle-btn) stiliyle hizalı */
.theme-toggle-btn {
  background-color: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font: inherit;
  font-size: 0.8rem;
  padding: 0.45rem 0.7rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.theme-toggle-btn:hover {
  background-color: var(--bg-elev);
  border-color: var(--accent);
  color: var(--text);
}
.theme-toggle-btn:hover [data-theme-icon] { animation: spin 0.5s ease-in-out; }
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Main */
.site-main { flex: 1 0 auto; }

/* Hero */
.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 5.5rem 0 3.25rem;
  text-align: center;
}
/* Dekoratif accent ışıması — başlığın arkasında, etkileşimsiz. */
.hero::before {
  content: "";
  position: absolute;
  inset: -20% 0 auto;
  height: 130%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 70% at 50% 0%, rgba(var(--accent-rgb), 0.16), transparent 70%),
    radial-gradient(40% 60% at 78% 8%, rgba(139, 92, 246, 0.12), transparent 72%);
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 1rem;
}
.hero__eyebrow::before {
  content: "";
  width: 1.75rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent));
}
.hero__title {
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 auto 1.25rem;
  max-width: 18ch;
  background: linear-gradient(180deg, var(--text), var(--title-fade));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 52ch;
  margin: 0 auto 2rem;
}
.hero__actions { display: flex; gap: 0.85rem; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-hover); color: #fff; }
.btn--ghost { border-color: var(--border); color: var(--text); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

/* Cards / content */
.placeholder-card {
  margin: 1rem auto 4rem;
  padding: 2rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}
.placeholder-card h2 { margin-top: 0; }
.placeholder-card p { color: var(--text-muted); margin-bottom: 0; }

.content-page { padding: 3rem 0 4rem; max-width: 720px; }
.content-page h1 { margin-top: 0; }
.content-page p { color: var(--text-muted); }

/* Error / 404 */
.error-page { text-align: center; max-width: 560px; }
.error-page__code {
  font-size: clamp(3rem, 12vw, 6rem);
  font-weight: 800;
  line-height: 1;
  margin: 0 0 0.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.error-page h1 { margin: 0 0 1rem; }
.error-page .btn { margin-top: 1rem; }
.error-page__req { margin-top: 2rem; opacity: 0.6; }

/* Post list */
.post-list {
  display: grid;
  gap: 1.25rem;
  margin: 1rem auto 4rem;
  max-width: 820px;
}
/* Çok-sütunlu kart grid'i — geniş ekranda yan yana, dar ekranda tek sütun. */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 0 auto 4rem;
}
.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.post-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.35rem 1.5rem 1.5rem;
}
/* Sol kenarda hover'da beliren accent şeridi. */
.post-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.2s ease;
}
.post-card:hover {
  border-color: rgba(var(--accent-rgb), 0.45);
  transform: translateY(-3px);
  box-shadow: 0 14px 32px -18px rgba(var(--accent-rgb), 0.55);
}
.post-card:hover::before { transform: scaleY(1); }
.post-card__title { margin: 0 0 0.5rem; font-size: 1.3rem; line-height: 1.3; }
.post-card__title a { color: var(--text); }
.post-card__title a:hover { color: var(--accent); }
.post-card__excerpt { color: var(--text-muted); margin: 0 0 0.85rem; }
.post-card__more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: auto;
  align-self: flex-start;
}
.post-card__more::after {
  content: "→";
  transition: transform 0.2s ease;
}
.post-card:hover .post-card__more::after { transform: translateX(4px); }

/* Yazı meta bilgisi (yayın tarihi + okuma süresi) */
.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0 0 0.85rem;
}
.post-meta__sep { opacity: 0.5; }
.post-meta--detail { margin: 0.9rem 0 0; }

/* Kart kapak görseli — kartın üstüne tam-genişlik oturur. */
.post-card__cover {
  display: block;
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg);
}
.post-card__cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.post-card:hover .post-card__cover img { transform: scale(1.04); }

/* ── Kategori chip'leri (kartta) — admin action-chip'leri gibi, kategori renginde ── */
.post-card__cats { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0 0 0.7rem; }
.post-cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.6rem;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.2px;
  color: var(--chip-color, var(--accent));
  background: color-mix(in srgb, var(--chip-color, var(--accent)) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--chip-color, var(--accent)) 40%, transparent);
  transition: background 0.15s ease;
}
.post-cat-chip:hover { background: color-mix(in srgb, var(--chip-color, var(--accent)) 26%, transparent); }
.post-cat-chip__dot { width: 7px; height: 7px; border-radius: 50%; background: var(--chip-color, var(--accent)); flex: 0 0 auto; }

/* ── Filtre çubuğu: başlık araması + kategori chip'leri ── */
.blog-filter { margin: 0 auto 1.75rem; display: flex; flex-direction: column; gap: 1rem; }
.blog-search { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.blog-search__input {
  flex: 1 1 260px;
  min-width: 0;
  padding: 0.6rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font-size: 0.95rem;
}
/* :focus-visible ile yalnız klavye/programatik odakta görünür; fare tıklamasında tetiklenmez. */
.blog-search__input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
/* Fare odağında sadece border rengini değiştir, sistem outline'ı koru. */
.blog-search__input:focus:not(:focus-visible) { outline: none; border-color: var(--accent); }
.blog-search__btn {
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #0d1117;
  font-weight: 700;
  cursor: pointer;
}
.blog-search__clear { font-size: 0.85rem; color: var(--text-muted); }
.blog-search__clear:hover { color: var(--accent); }
.blog-cats { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.filter-chip:hover { color: var(--text); border-color: color-mix(in srgb, var(--chip-color, var(--accent)) 50%, var(--border)); }
.filter-chip__dot { width: 9px; height: 9px; border-radius: 50%; background: var(--chip-color, var(--accent)); flex: 0 0 auto; }
.filter-chip.is-active {
  color: var(--chip-color, var(--accent));
  border-color: var(--chip-color, var(--accent));
  background: color-mix(in srgb, var(--chip-color, var(--accent)) 14%, transparent);
}

/* Detay sayfası kapak görseli. aspect-ratio ile yer ayrılır → görsel yüklenince
   layout kaymaz (CLS / Core Web Vitals). */
.post-cover {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 440px;
  object-fit: cover;
  border-radius: var(--radius);
  margin: 1.5rem 0;
}

/* ---- Görsel inceleme (lightbox) — generic, tüm site (lightbox.js) ---- */
.lightbox-zoomable { cursor: zoom-in; }
html.lightbox-open { overflow: hidden; }
.lightbox {
  position: fixed; inset: 0; z-index: 4000;
  display: flex; align-items: center; justify-content: center;
  padding: 2rem;
  background: rgba(0, 0, 0, 0.88);
  opacity: 0; pointer-events: none;
  transition: opacity 0.25s ease;
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox__img {
  max-width: 92vw; max-height: 88vh;
  width: auto; height: auto; object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.6);
  cursor: default;
}
.lightbox__close {
  position: fixed; top: 1rem; right: 1rem; z-index: 1;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: rgba(0, 0, 0, 0.5); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%; font-size: 1.25rem; line-height: 1; cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.lightbox__close:hover { background: rgba(0, 0, 0, 0.85); border-color: #fff; }

/* Post detail */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}
.back-link::before {
  content: "←";
  transition: transform 0.2s ease;
}
.back-link:hover::before { transform: translateX(-4px); }
.content-page h1 + .post-content,
.post-content { margin-top: 1.5rem; }
.content-page h1 {
  position: relative;
  padding-bottom: 1.1rem;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
}
.content-page h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 3.5rem;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.post-content {
  /* Genişlik kapağı YOK: metin, üstündeki kapak görseliyle (.post-cover, %100)
     aynı genişliği — yani .content-page genişliğini — kaplasın. Aksi halde dar
     metin sütunu geniş görselin altında absürt durur. */
  word-break: break-word;
  color: var(--text);
  font-size: 1.07rem;
  line-height: 1.8;
}

/* ── Markdown'dan render edilen zengin içerik tipografisi (.prose) ────────── */
.prose > :first-child { margin-top: 0; }
.prose > :last-child { margin-bottom: 0; }
.prose p { margin: 0 0 1.15rem; text-align: justify; text-align-last: left; -webkit-hyphens: auto; hyphens: auto; }
.prose h2, .prose h3, .prose h4 {
  margin: 2.2rem 0 0.9rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  scroll-margin-top: 90px;
}
.prose h2 { font-size: 1.5rem; }
.prose h3 { font-size: 1.25rem; }
.prose h4 { font-size: 1.08rem; }
.prose a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.prose a:hover { color: var(--accent-hover); }
.prose strong { color: var(--text); font-weight: 700; }
.prose ul, .prose ol { margin: 0 0 1.15rem; padding-left: 1.4rem; }
.prose li { margin: 0.35rem 0; text-align: justify; text-align-last: left; -webkit-hyphens: auto; hyphens: auto; }
.prose li::marker { color: var(--accent); }
.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.4rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: rgba(var(--accent-rgb), 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
}
.prose blockquote p:last-child { margin-bottom: 0; }
.prose code {
  font-family: ui-monospace, "Cascadia Code", "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.12em 0.4em;
}
.prose pre {
  margin: 1.5rem 0;
  padding: 1rem 1.15rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  line-height: 1.6;
}
.prose pre code { background: none; border: 0; padding: 0; font-size: 0.875rem; }
.prose img { max-width: 100%; height: auto; border-radius: var(--radius-sm); margin: 1.5rem 0; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2.2rem 0; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.95rem; }
.prose th, .prose td { border: 1px solid var(--border); padding: 0.5rem 0.75rem; text-align: left; }
.prose th { background: var(--bg-elev); font-weight: 600; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text-muted);
  font-size: 0.9rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 560px) {
  .header-inner { height: 56px; }
  .brand__logo { height: 34px; }
  .hero { padding: 3.5rem 0 2.5rem; }
  .site-nav { gap: 0.85rem; }
  .toggle-text { display: none; }
}

/* Sayfalama (blog listesi) */
.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin: 0 auto 4rem;
}
.pagination__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.7rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.pagination__link:hover { border-color: var(--accent); color: var(--accent); }
.pagination__link.is-current {
  background: var(--accent);
  border-color: var(--accent);
  color: #0d1117;
  cursor: default;
}
.pagination__link--nav { font-weight: 700; }
.pagination__link.is-disabled { opacity: 0.45; pointer-events: none; }
.pagination__ellipsis { padding: 0 0.25rem; color: var(--text-muted); user-select: none; }
@media (max-width: 560px) {
  .pagination__link { min-width: 36px; height: 36px; padding: 0 0.55rem; font-size: 0.9rem; }
}

/* Geniş ekranlar (PC) — site genelinde sayfa daha ferah olsun: ana .container ve
   okuma sütunları (yazı detayı + liste) kademeli genişler. .content-page genişledikçe
   kapak görseli ve .post-content birlikte büyür → ikisi her zaman aynı genişlikte. */
@media (min-width: 1200px) {
  .container { max-width: 1180px; }
  .content-page { max-width: 880px; }
  .post-list { max-width: 1000px; }
}
@media (min-width: 1600px) {
  .container { max-width: 1360px; }
  .content-page { max-width: 940px; }
  .post-list { max-width: 1140px; }
}
@media (min-width: 1920px) {
  .container { max-width: 1500px; }
  .content-page { max-width: 1000px; }
  .post-list { max-width: 1260px; }
}

/* Scroll-reveal — gizleme YALNIZCA JS aktifken (.js); JS yoksa içerik tam görünür.
   Sadece opacity/transform kullanılır → ekran okuyucu içeriği görmeye devam eder. */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }
/* Kart listesinde hafif kademeli giriş. */
.js .post-grid .post-card.reveal { transition-delay: 0.05s; }
.js .post-grid .post-card.reveal:nth-child(2) { transition-delay: 0.12s; }
.js .post-grid .post-card.reveal:nth-child(3) { transition-delay: 0.19s; }
.js .post-grid .post-card.reveal:nth-child(4) { transition-delay: 0.26s; }

/* Erişilebilirlik: hareketi azaltma tercihine saygı göster. */
@media (prefers-reduced-motion: reduce) {
  /* Reveal öğeleri asla gizli kalmasın (IO tetiklenmese bile görünür). */
  .js .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}