/* BIM Dönüşümü blog — ana sitenin kimliği (lacivert-siyah zemin, sinyal mavisi, Unbounded) üzerine
   uzun okuma için düzenlendi. Koyu tema varsayılan; açık tema sistem tercihi ya da data-theme ile. */
:root {
  --bg: #07080D;
  --surface: #0D1019;
  --ink: #E7EBF4;
  --text: #C4CAD8;
  --dim: #8B93A7;
  --line: #1D2230;
  --accent: #6F8CFF;
  --accent-soft: rgba(111, 140, 255, .12);
  --on-accent: #05060A;
  --f-display: "Unbounded", "Arial Black", system-ui, sans-serif;
  --f-body: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #F5F6FA; --surface: #FFFFFF; --ink: #0F1320; --text: #2A3040; --dim: #5A6275; --line: #DCE0EA;
    --accent: #2F4CD6; --accent-soft: rgba(47, 76, 214, .08); --on-accent: #FFFFFF;
    color-scheme: light;
  }
}
:root[data-theme="light"] {
  --bg: #F5F6FA; --surface: #FFFFFF; --ink: #0F1320; --text: #2A3040; --dim: #5A6275; --line: #DCE0EA;
  --accent: #2F4CD6; --accent-soft: rgba(47, 76, 214, .08); --on-accent: #FFFFFF;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 18px/1.72 var(--f-body); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* site header / footer */
.site-h, .site-f, .wrap { max-width: 72rem; margin-inline: auto; padding-inline: clamp(16px, 4vw, 40px); }
.site-h { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-block: 22px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 500 12px var(--f-mono); letter-spacing: .16em; text-transform: uppercase; }
.brand i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.site-h nav { display: flex; align-items: center; gap: 6px 22px; flex-wrap: wrap; font: 400 12px var(--f-mono); letter-spacing: .1em; text-transform: uppercase; }
.site-h nav a { color: var(--dim); text-decoration: none; }
.site-h nav a:hover { color: var(--ink); }
.site-h nav .nav-cta { color: var(--ink); border: 1px solid var(--accent); padding: 7px 12px; background: var(--accent-soft); }
.site-f { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-block: 32px 48px; margin-top: 72px; border-top: 1px solid var(--line); font: 400 12px var(--f-mono); letter-spacing: .06em; color: var(--dim); }
.site-f a { color: var(--dim); }

/* shared type */
.kicker { font: 500 11px/1.4 var(--f-mono); letter-spacing: .2em; text-transform: uppercase; color: var(--accent); margin: 0; }
h1, h2, h3 { color: var(--ink); text-wrap: balance; }
h1 { font: 300 clamp(2rem, 4.6vw, 3.4rem)/1.08 var(--f-display); letter-spacing: -.02em; margin: 14px 0 18px; }
.lead { font-size: 1.18rem; line-height: 1.6; color: var(--text); margin: 0; max-width: 40rem; }

/* blog list */
.blog-h { padding-block: clamp(40px, 7vw, 80px) 28px; border-bottom: 1px solid var(--line); }
.cats { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 0; }
.cats span { font: 400 11px var(--f-mono); letter-spacing: .08em; color: var(--dim); border: 1px solid var(--line); padding: 5px 10px; }
.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { border-bottom: 1px solid var(--line); }
.post-list article { padding-block: 30px; display: grid; gap: 10px; max-width: 46rem; }
.post-list h2 { font: 400 clamp(1.25rem, 2.4vw, 1.6rem)/1.25 var(--f-display); letter-spacing: -.01em; margin: 0; }
.post-list h2 a { color: var(--ink); text-decoration: none; }
.post-list h2 a:hover { color: var(--accent); }
.post-list p:not(.kicker) { margin: 0; color: var(--text); }
.post-list .kicker { color: var(--dim); letter-spacing: .12em; }

/* article */
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 28px; font: 400 12px var(--f-mono); letter-spacing: .06em; color: var(--dim); }
.crumbs a { color: var(--dim); text-decoration: none; }
.crumbs a:hover { color: var(--ink); }
.post-h { padding-block: clamp(28px, 5vw, 56px) 32px; border-bottom: 1px solid var(--line); max-width: 52rem; }
.post-h .meta { margin: 22px 0 0; font: 400 12.5px/1.7 var(--f-mono); letter-spacing: .04em; color: var(--dim); }
.post-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; padding-top: 32px; }
@media (min-width: 1100px) {
  .post-grid { grid-template-columns: 15rem minmax(0, 1fr); gap: 56px; }
  .toc { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 24px); align-self: start; max-height: calc(100vh - 48px); overflow-y: auto; }
}
.toc details { border: 1px solid var(--line); background: var(--surface); padding: 14px 16px; }
.toc summary { cursor: pointer; font: 500 11px var(--f-mono); letter-spacing: .18em; text-transform: uppercase; color: var(--dim); }
.toc ol { margin: 12px 0 0; padding-left: 1.2em; display: grid; gap: 8px; font-size: 14.5px; line-height: 1.45; }
.toc li::marker { color: var(--dim); font: 400 12px var(--f-mono); }
.toc a { color: var(--text); text-decoration: none; }
.toc a:hover { color: var(--accent); }

.prose { max-width: 68ch; }
.prose > * + * { margin-top: 1.1em; }
.prose > :first-child { margin-top: 0; }
.prose h2 { font: 400 clamp(1.35rem, 2.6vw, 1.75rem)/1.25 var(--f-display); letter-spacing: -.01em; margin-top: 2.2em; scroll-margin-top: 24px; }
.prose h3 { font: 600 1.12rem/1.4 var(--f-body); margin-top: 1.8em; scroll-margin-top: 24px; }
.prose h2 + *, .prose h3 + * { margin-top: .7em; }
.prose p, .prose li { color: var(--text); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose ul, .prose ol { padding-left: 1.3em; display: grid; gap: .45em; }
.prose li::marker { color: var(--accent); }
.prose ul.check { list-style: none; padding-left: 0; }
.prose ul.check li { position: relative; padding-left: 2em; }
.prose ul.check li::before { content: ""; position: absolute; left: 0; top: .42em; width: 1em; height: 1em; border: 1.5px solid var(--dim); }
.prose code { font: 400 .86em var(--f-mono); color: var(--ink); background: var(--accent-soft); padding: .1em .35em; border-radius: 3px; overflow-wrap: anywhere; }
.prose .note { border-left: 2px solid var(--accent); background: var(--surface); padding: 14px 18px; }
.prose .note p { margin: 0; font-size: .96em; }
.prose .note p + p { margin-top: .6em; }
.table { overflow-x: auto; border: 1px solid var(--line); }
.table table { width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.5; min-width: 34rem; }
.table th, .table td { text-align: left; vertical-align: top; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.table thead th { font: 500 11px var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); background: var(--surface); }
.table tbody th { font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; white-space: nowrap; }
.table tbody tr:last-child > * { border-bottom: 0; }


/* figures (inline SVG, colours from the theme tokens) */
.prose { max-width: none; }
.prose > :not(.fig) { max-width: 68ch; }
.fig { margin: 2.2em 0 2.4em; }
.fig .frame { border: 1px solid var(--line); background: var(--surface); padding: clamp(12px, 2.4vw, 24px); overflow-x: auto; }
.fig svg { display: block; width: 100%; height: auto; }
.fig figcaption { margin-top: 10px; max-width: 68ch; font: 400 12.5px/1.55 var(--f-mono); color: var(--dim); }
.cover { margin-top: 28px; border: 1px solid var(--line); line-height: 0; }
.cover svg { display: block; width: 100%; height: auto; }
.tldr { border: 1px solid var(--line); border-left: 2px solid var(--accent); background: var(--surface); padding: 16px 20px; }
.tldr ul { margin: 10px 0 0; padding-left: 1.2em; display: grid; gap: .4em; font-size: .97em; }
.tldr li::marker { color: var(--accent); }
.tldr + * { margin-top: 1.6em !important; }
svg .s-ln { stroke: var(--line); } svg .s-dim { stroke: var(--dim); } svg .s-ink { stroke: var(--ink); } svg .s-ac { stroke: var(--accent); } svg .s-bgc { stroke: var(--bg); fill: none; }
svg .f-ac { fill: var(--accent); } svg .f-acs { fill: var(--accent-soft); } svg .f-sf { fill: var(--surface); } svg .f-bg { fill: var(--bg); }
svg .f-ln { fill: var(--line); } svg .f-dim { fill: var(--dim); } svg .f-ink { fill: var(--ink); } svg .f-tx { fill: var(--text); }
svg line, svg path { fill: none; }
svg .dash { stroke-dasharray: 5 4; }
svg .tm { font-family: var(--f-mono); } svg .ts { font-family: var(--f-body); } svg .td { font-family: var(--f-display); }
svg .m-k0, svg .m-k1, svg .m-k2 { fill: var(--accent); stroke: var(--surface); stroke-width: .8; vector-effect: non-scaling-stroke; }
svg .m-k0 { fill-opacity: .14; } svg .m-k1 { fill-opacity: .45; } svg .m-k2 { fill-opacity: .9; }
svg path.m-k0:hover, svg path.m-k1:hover, svg path.m-k2:hover { fill-opacity: 1; }
.pl { display: grid; gap: 10px; }
.pl-thumb { display: block; border: 1px solid var(--line); line-height: 0; overflow: hidden; }
.pl-thumb svg { display: block; width: 100%; height: auto; }
@media (min-width: 760px) {
  .post-list .pl { grid-template-columns: minmax(0, 1fr) 260px; column-gap: 32px; max-width: none; }
  .pl-thumb { grid-column: 2; grid-row: 1 / span 3; align-self: start; }
}

/* call to action + related */
.cta-box { margin-top: 56px; max-width: 68ch; border: 1px solid var(--accent); background: var(--accent-soft); padding: clamp(20px, 3vw, 30px); display: grid; gap: 12px; }
.cta-box p { margin: 0; }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.btn { display: inline-flex; align-items: center; font: 500 12px var(--f-mono); letter-spacing: .14em; text-transform: uppercase; text-decoration: none; padding: 12px 18px; background: var(--accent); color: var(--on-accent); border: 1px solid var(--accent); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
.related { margin-top: 64px; }
.related h2 { font: 500 11px var(--f-mono); letter-spacing: .2em; text-transform: uppercase; color: var(--dim); margin: 0 0 14px; }
.related ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.related a { display: grid; gap: 8px; height: 100%; padding: 18px; background: var(--bg); color: var(--ink); text-decoration: none; font: 400 1rem/1.35 var(--f-display); letter-spacing: -.01em; }
.related a:hover { background: var(--surface); }
.related .kicker { color: var(--dim); letter-spacing: .12em; }

@media (max-width: 600px) {
  body { font-size: 17px; }
  .lead { font-size: 1.08rem; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }