/* erdncbyrk.com — koyu poster ana sayfa, açık zeminli blog/yazı sayfaları.
   Tek vurgu: mor. Yazı tipleri: Manrope (başlık + metin), IBM Plex Mono (etiket, tarih, kod). */
:root {
  --coal: #151516;
  --coal-2: #1d1d1f;
  --line-d: #2e2e31;
  --paper: #f3f3f1;
  --paper-2: #c9c9ce;
  --muted-d: #a3a3a8;
  --snow: #f4f4f2;
  --ink: #151516;
  --ink-2: #3f3f45;
  --line-l: #dddcd8;
  --muted-l: #5d5d63;
  --violet: #a678ff;
  --violet-hi: #b993ff;
  --violet-ink: #6d3fe0;
  --sans: "Manrope", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; min-height: 100vh; display: flex; flex-direction: column; background: var(--coal); color: var(--paper); font: 400 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { margin: 0; text-wrap: balance; letter-spacing: -0.035em; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--violet); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

main { flex: 1 0 auto; }
.wrap { max-width: 1200px; margin: 0 auto; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px)); }
.narrow { max-width: 760px; }
.label { font: 500 12px/1.3 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted-d); }
.dot { color: var(--violet); }
.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 16px; top: 16px; z-index: 50; background: var(--violet); color: var(--coal); padding: 8px 12px; }

/* Düğmeler */
.btn { display: inline-flex; align-items: center; gap: 8px; font: 600 13px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; text-decoration: none; padding: 14px 18px; border: 1px solid currentColor; background: none; color: inherit; cursor: pointer; transition: background .2s, color .2s, border-color .2s; }
.btn.fill { background: var(--violet); border-color: var(--violet); color: var(--coal); }
.btn.fill:hover { background: var(--violet-hi); border-color: var(--violet-hi); }
.btn.ghost:hover { background: var(--paper); border-color: var(--paper); color: var(--coal); }
.ctas { display: flex; flex-wrap: wrap; gap: 12px; }

/* Üst menü */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(21, 21, 22, .9); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line-d); color: var(--paper); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 14px; }
.logo { font: 800 21px/1 var(--sans); letter-spacing: -0.04em; text-decoration: none; }
.links { display: flex; gap: 26px; font-size: 14px; font-weight: 500; color: var(--muted-d); }
.links a { text-decoration: none; padding-block: 6px; }
.links a:hover, .links a[aria-current="page"] { color: var(--paper); }
.nav .btn { padding: 10px 14px; font-size: 12px; }
.nav-toggle, .burger, .links .only-m { display: none; }
@media (max-width: 860px) {
  .burger { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 38px; border: 1px solid var(--line-d); cursor: pointer; font: 500 18px/1 var(--mono); }
  .nav .btn { display: none; }
  .links .only-m { display: block; }
  .links { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; gap: 0; background: var(--coal); border-bottom: 1px solid var(--line-d); padding: 8px max(20px, env(safe-area-inset-right, 0px)) 16px max(20px, env(safe-area-inset-left, 0px)); font-size: 18px; }
  .links a { padding-block: 12px; border-bottom: 1px solid var(--line-d); color: var(--paper); }
  .nav-toggle:checked ~ .links { display: flex; }
}

/* ---------- Ana sayfa ---------- */
.hero { overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 40px minmax(0, 1.05fr) minmax(0, .95fr); gap: 0 32px; min-height: 640px; padding-block: 56px 0; }
.vert { grid-row: 1 / 3; writing-mode: vertical-rl; transform: rotate(180deg); align-self: center; font: 500 13px/1 var(--mono); letter-spacing: .4em; text-transform: uppercase; color: var(--muted-d); white-space: nowrap; }
.hero-text { display: grid; align-content: center; gap: 26px; padding-bottom: 56px; }
.hero h1 { font-weight: 800; font-size: clamp(56px, 9vw, 128px); line-height: .9; letter-spacing: -0.045em; }
.hero .lede { font-size: 19px; color: #d4d4d8; max-width: 34ch; }
.since { justify-self: start; border: 1px solid var(--paper); padding: 10px 14px; font: 500 11px/1.3 var(--mono); letter-spacing: .16em; text-transform: uppercase; }
.since b { display: block; font: 700 20px/1.2 var(--mono); letter-spacing: .04em; }
.portrait { position: relative; align-self: end; display: grid; justify-items: center; }
.portrait::before { content: ""; position: absolute; width: min(82%, 460px); aspect-ratio: 1; border-radius: 50%; background: var(--violet); top: 14%; left: 50%; transform: translateX(-50%); }
.portrait img { position: relative; display: block; width: min(92%, 500px);
  -webkit-mask-image: linear-gradient(to bottom, #000 72%, transparent 99%), linear-gradient(to right, transparent 0, #000 9%, #000 91%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to bottom, #000 72%, transparent 99%), linear-gradient(to right, transparent 0, #000 9%, #000 91%, transparent 100%);
  mask-composite: intersect; }
@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 24px minmax(0, 1fr); min-height: 0; padding-block: 36px 0; }
  .vert { font-size: 11px; }
  .hero-text { padding-bottom: 28px; }
  .portrait { grid-column: 2; max-width: 420px; width: 100%; justify-self: center; }
}

.facts { border-top: 1px solid var(--line-d); border-bottom: 1px solid var(--line-d); background: var(--coal-2); }
.facts .wrap { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.fact { padding: 26px 0; display: flex; align-items: baseline; gap: 12px; }
.fact + .fact { border-left: 1px solid var(--line-d); padding-left: 28px; }
.fact b { font: 800 34px/1 var(--sans); letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.fact span { font: 500 12px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted-d); }
@media (max-width: 640px) { .facts .wrap { grid-template-columns: minmax(0, 1fr); } .fact + .fact { border-left: 0; border-top: 1px solid var(--line-d); padding-left: 0; } }

.block { padding-block: 104px; scroll-margin-top: 64px; }
.block + .block { padding-top: 0; }
.block.light { padding-top: 104px; }
.head { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 44px; }
.head h2 { font-weight: 800; font-size: clamp(36px, 5vw, 60px); line-height: 1; }
.subhead { margin: 72px 0 20px; font-size: 26px; font-weight: 800; letter-spacing: -0.03em; }

.about { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; }
.about .quote { font: 700 clamp(26px, 3vw, 36px)/1.15 var(--sans); letter-spacing: -0.02em; }
.about .body { display: grid; gap: 16px; color: var(--paper-2); max-width: 58ch; }
.about .body strong { color: var(--paper); font-weight: 600; }
@media (max-width: 820px) { .about { grid-template-columns: minmax(0, 1fr); gap: 24px; } }

.skills { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line-d); border: 1px solid var(--line-d); }
.skill { background: var(--coal); padding: 26px; display: grid; gap: 16px; align-content: start; }
.skill h3 { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span { font: 500 13px/1 var(--mono); padding: 8px 10px; border: 1px solid var(--line-d); color: #dcdce0; }
@media (max-width: 720px) { .skills { grid-template-columns: minmax(0, 1fr); } }

.rows { border-top: 1px solid var(--line-d); }
.row { display: grid; grid-template-columns: 170px minmax(0, 1fr) auto; gap: 28px; padding: 30px 0; border-bottom: 1px solid var(--line-d); align-items: baseline; }
.row .when { font: 500 13px/1.4 var(--mono); color: var(--muted-d); }
.row h3 { font-size: clamp(20px, 2.4vw, 26px); font-weight: 700; letter-spacing: -0.02em; }
.row h3 small { font-size: inherit; font-weight: 500; color: var(--muted-d); }
.row p { color: var(--paper-2); margin-top: 8px; max-width: 62ch; font-size: 16px; }
.row .more { font: 500 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--violet); text-decoration: none; white-space: nowrap; }
.row .more:hover { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 720px) { .row { grid-template-columns: minmax(0, 1fr); gap: 8px; } }

.project { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 40px; align-items: center; border-top: 1px solid var(--line-d); border-bottom: 1px solid var(--line-d); padding-block: 40px; }
.project h3 { margin-top: 14px; font-size: clamp(34px, 4.4vw, 52px); font-weight: 800; line-height: 1; }
.project .tagline { color: var(--paper-2); font-size: 19px; margin-top: 10px; }
.project .desc { color: var(--paper-2); margin-top: 18px; max-width: 56ch; font-size: 16px; }
.project .stack { display: flex; flex-wrap: wrap; gap: 8px 24px; margin: 22px 0 24px; font: 500 13px/1.4 var(--mono); color: var(--muted-d); }
.project .stack b { color: var(--paper); font-weight: 500; }
.project .art { position: relative; display: grid; place-items: center; min-height: 260px; }
.project .art::before { content: ""; position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; border: 1px solid var(--violet); }
.project .art img { position: relative; width: 100%; max-width: 440px; }
@media (max-width: 820px) { .project { grid-template-columns: minmax(0, 1fr); } }

/* Açık zemin bölümleri ve sayfaları */
.light { background: var(--snow); color: var(--ink); }
.light .label { color: var(--muted-l); }
.light .dot { color: var(--violet-ink); }
.light .btn.ghost:hover { background: var(--ink); border-color: var(--ink); color: var(--snow); }
.textlink { font: 600 13px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--violet-ink); text-decoration: none; white-space: nowrap; }
.textlink:hover { text-decoration: underline; text-underline-offset: 4px; }

.posts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 2px solid var(--ink); }
.post { padding: 24px 24px 28px 0; display: grid; gap: 12px; align-content: start; text-decoration: none; }
.post + .post { border-left: 1px solid var(--line-l); padding-left: 24px; }
.post .date { font: 500 12px/1 var(--mono); color: var(--muted-l); letter-spacing: .04em; }
.post h3 { font-size: 21px; line-height: 1.22; font-weight: 700; letter-spacing: -0.02em; }
.post p { font-size: 15px; color: var(--muted-l); }
.post .read { font: 600 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--violet-ink); }
.post:hover h3 { text-decoration: underline; text-decoration-color: var(--violet-ink); text-underline-offset: 4px; }
@media (max-width: 860px) { .posts { grid-template-columns: minmax(0, 1fr); } .post + .post { border-left: 0; border-top: 1px solid var(--line-l); padding-left: 0; } }

/* İletişim + alt bilgi */
.contact { padding-block: 120px 0; }
.contact .mail { display: block; margin-top: 22px; font: 800 clamp(30px, 7.4vw, 96px)/1 var(--sans); letter-spacing: -0.045em; text-decoration: none; overflow-wrap: anywhere; }
.contact .mail:hover { color: var(--violet); }
.contact .ctas { margin-top: 32px; }
.foot { margin-top: 96px; padding-block: 22px 40px; border-top: 1px solid var(--line-d); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; font: 500 12px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted-d); }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.foot a { text-decoration: none; }
.foot a:hover { color: var(--paper); }
.site-foot { background: var(--coal); color: var(--paper); }
.site-foot .foot { margin-top: 0; border-top: 0; }

/* ---------- Blog listesi ---------- */
.page { padding-block: 72px 104px; }
.page-head { display: grid; gap: 18px; margin-bottom: 48px; }
.page-head h1 { font-weight: 800; font-size: clamp(40px, 6.4vw, 76px); line-height: .98; letter-spacing: -0.045em; }
.page-head p { font-size: 19px; color: var(--muted-l); max-width: 52ch; }

.search { display: flex; max-width: 560px; border: 1px solid var(--ink); background: #fff; }
.search input { flex: 1; min-width: 0; border: 0; background: none; padding: 14px 16px; font: 400 16px/1.2 var(--sans); color: var(--ink); }
.search input:focus { outline: none; }
.search:focus-within { outline: 2px solid var(--violet-ink); outline-offset: 2px; }
.search button { border: 0; border-left: 1px solid var(--ink); background: var(--ink); color: var(--snow); padding: 0 18px; font: 600 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; cursor: pointer; }
.search button:hover { background: var(--violet-ink); }
.result { font-size: 15px; color: var(--muted-l); }
.result a { margin-left: 10px; }
.empty { padding: 40px 0; color: var(--muted-l); border-top: 2px solid var(--ink); }

.list { border-top: 2px solid var(--ink); }
.item { display: grid; grid-template-columns: 150px minmax(0, 1fr) auto; gap: 28px; align-items: baseline; padding: 28px 0; border-bottom: 1px solid var(--line-l); text-decoration: none; }
.item .date { font: 500 12px/1.5 var(--mono); color: var(--muted-l); letter-spacing: .04em; }
.item h2 { font-size: clamp(20px, 2.4vw, 26px); line-height: 1.22; font-weight: 700; letter-spacing: -0.02em; }
.item p { margin-top: 8px; font-size: 16px; color: var(--muted-l); max-width: 70ch; }
.item .read { font: 600 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--violet-ink); white-space: nowrap; }
.item:hover h2 { text-decoration: underline; text-decoration-color: var(--violet-ink); text-underline-offset: 5px; }
@media (max-width: 720px) { .item { grid-template-columns: minmax(0, 1fr); gap: 8px; } }

.pager { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 40px; flex-wrap: wrap; }
.pager-nums { display: flex; gap: 6px; flex-wrap: wrap; }
.pager a, .pager span { font: 500 13px/1 var(--mono); text-decoration: none; padding: 10px 13px; border: 1px solid var(--line-l); color: var(--ink-2); }
.pager a:hover { border-color: var(--ink); color: var(--ink); }
.pager .is-current { background: var(--ink); border-color: var(--ink); color: var(--snow); }
.pager .is-disabled { opacity: .4; }

/* ---------- Yazı ---------- */
.back { font: 500 13px/1 var(--mono); color: var(--muted-l); text-decoration: none; }
.back:hover { color: var(--violet-ink); }
.article-head { display: grid; gap: 18px; margin: 32px 0 40px; padding-bottom: 32px; border-bottom: 2px solid var(--ink); }
.article-head h1 { font-weight: 800; font-size: clamp(34px, 5vw, 56px); line-height: 1.04; letter-spacing: -0.04em; }
.article-head .meta { display: flex; flex-wrap: wrap; gap: 6px 18px; font: 500 12px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted-l); }
.cover { display: block; width: 100%; margin: 0 0 40px; border: 1px solid var(--line-l); }

.prose { font-size: 18px; line-height: 1.75; color: var(--ink-2); }
.prose > * + * { margin-top: 20px; }
.prose h2 { margin-top: 48px; font-size: clamp(24px, 3vw, 30px); line-height: 1.2; font-weight: 800; color: var(--ink); letter-spacing: -0.03em; }
.prose h3 { margin-top: 36px; font-size: 21px; line-height: 1.3; font-weight: 700; color: var(--ink); letter-spacing: -0.02em; }
.prose h2 + *, .prose h3 + * { margin-top: 12px; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: 8px; }
.prose li::marker { color: var(--violet-ink); }
.prose a { color: var(--violet-ink); text-underline-offset: 3px; }
.prose strong { color: var(--ink); font-weight: 700; }
.prose code { font-family: var(--mono); font-size: .86em; background: #e9e8e4; padding: 2px 6px; }
.prose pre { background: var(--coal); color: #e8e8ea; padding: 18px 20px; overflow-x: auto; border-left: 3px solid var(--violet); }
.prose pre code { background: none; padding: 0; color: inherit; font-size: 14px; line-height: 1.65; }
.prose blockquote { margin-left: 0; margin-right: 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--violet-ink); color: var(--ink); font-weight: 600; }
.prose img { display: block; border: 1px solid var(--line-l); }

.extra { margin-top: 56px; padding-top: 28px; border-top: 2px solid var(--ink); }
.extra h2 { font-size: 24px; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 18px; }
.extra ol { margin: 0; padding-left: 1.3em; font-size: 17px; color: var(--ink-2); }
.extra ol li + li { margin-top: 8px; }
.extra ol li::marker { font-family: var(--mono); color: var(--violet-ink); }
.faq-item { border-bottom: 1px solid var(--line-l); }
.faq-item:first-of-type { border-top: 1px solid var(--line-l); }
.faq-item summary { cursor: pointer; list-style: none; position: relative; padding: 18px 36px 18px 0; font-size: 18px; font-weight: 700; color: var(--ink); letter-spacing: -0.01em; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; position: absolute; right: 4px; top: 14px; font: 500 22px/1.2 var(--mono); color: var(--violet-ink); transition: transform .2s; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer { padding-bottom: 18px; color: var(--ink-2); }
.faq-answer p + p { margin-top: 8px; }

.author { margin-top: 56px; display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 20px; align-items: center; padding: 24px; background: var(--coal); color: var(--paper); }
.author img { width: 72px; height: 72px; border-radius: 50%; background: var(--violet); }
.author p { font-size: 15px; color: var(--paper-2); }
.author b { display: block; color: var(--paper); font-size: 17px; margin-bottom: 4px; }
.author a { color: var(--violet); }

.related { margin-top: 56px; }
.related .posts { margin-top: 18px; }

/* ---------- Haberler ---------- */
.news { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); border-top: 2px solid var(--ink); }
.news-card { display: grid; gap: 10px; align-content: start; padding: 22px 22px 26px 0; border-bottom: 1px solid var(--line-l); text-decoration: none; }
.news-card .meta { display: flex; justify-content: space-between; gap: 12px; font: 500 11px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted-l); }
.news-card h2 { font-size: 19px; line-height: 1.3; font-weight: 700; letter-spacing: -0.01em; }
.news-card p { font-size: 15px; color: var(--muted-l); }
.news-card .read { font: 600 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--violet-ink); }
.news-card:hover h2 { text-decoration: underline; text-underline-offset: 4px; }