:root {
  --bg:        #0d1117;
  --bg-raised: #131a22;
  --line:      #232b34;
  --fg:        #e6edf3;
  --fg-muted:  #9aa5b1;
  --accent:    #3fb950;   /* PCB yesili ile uyumlu */
  --link:      #58a6ff;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --wrap: 68rem;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

/* --- Kabuk --- */

.site-head {
  display: flex; align-items: center; gap: 1.5rem;
  max-width: var(--wrap); margin: 0 auto; padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--line);
}
/* text-transform: uppercase KULLANMA. lang="tr" sayfalarinda tarayici Turkce
   buyuk harf kuralini uygular ve "Technologies" -> "TECHNOLOGIES" yerine
   "TECHNOLOGIES" icindeki i noktali I'ye donusur. Marka adi Ingilizce oldugu
   icin bu yanlis. Metin sablonda dogrudan buyuk harfle yaziliyor. */
.brand {
  display: flex; align-items: center; gap: .6rem;
  font-family: var(--mono); font-size: .95rem; font-weight: 600;
  letter-spacing: .06em;
  color: var(--fg); text-decoration: none; white-space: nowrap;
}
.brand-mark { height: 30px; width: auto; display: block; }
.brand-name span { color: var(--fg-muted); margin-left: .4em; font-weight: 400; }
.site-nav { display: flex; gap: 1.25rem; margin-left: auto; flex-wrap: wrap; }
.site-nav a {
  color: var(--fg-muted); text-decoration: none; font-size: .9rem;
  padding-bottom: 2px; border-bottom: 1px solid transparent;
}
.site-nav a:hover { color: var(--fg); }
.site-nav a.active { color: var(--fg); border-bottom-color: var(--accent); }
.lang-switch {
  font-family: var(--mono); font-size: .78rem; color: var(--fg-muted);
  text-decoration: none; border: 1px solid var(--line);
  padding: .3rem .6rem; border-radius: 4px; white-space: nowrap;
}
.lang-switch:hover { color: var(--fg); border-color: var(--fg-muted); }

.site-foot {
  max-width: var(--wrap); margin: 4rem auto 0; padding: 2rem 1.5rem 3rem;
  border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  color: var(--fg-muted); font-size: .88rem;
}
.foot-brand { font-family: var(--mono); letter-spacing: .05em; }
.site-foot a { color: var(--link); }

/* --- Bolumler --- */

section { max-width: var(--wrap); margin: 0 auto; padding: 3.5rem 1.5rem; }
section + section { border-top: 1px solid var(--line); }

h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.12;
     letter-spacing: -.02em; margin: 0 0 1rem; font-weight: 600; }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.75rem); line-height: 1.25;
     letter-spacing: -.015em; margin: 0 0 1rem; font-weight: 600; }
h3 { font-size: 1.05rem; margin: 0 0 .5rem; font-weight: 600; }
p  { margin: 0 0 1rem; max-width: 62ch; color: var(--fg-muted); }
p.lead { font-size: 1.12rem; color: var(--fg); max-width: 56ch; }
a { color: var(--link); }
ul, ol { color: var(--fg-muted); max-width: 62ch; padding-left: 1.2rem; }
li { margin-bottom: .4rem; }
strong { color: var(--fg); font-weight: 600; }
code { font-family: var(--mono); font-size: .9em; color: var(--fg); }

.eyebrow {
  font-family: var(--mono); font-size: .74rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--accent);
  display: block; margin-bottom: .9rem;
}

/* --- Hero --- */

.hero {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: center;
  background: radial-gradient(120% 110% at 8% 0%, #16202b, var(--bg));
  max-width: none; padding-left: max(1.5rem, calc((100vw - var(--wrap)) / 2 + 1.5rem));
  padding-right: max(1.5rem, calc((100vw - var(--wrap)) / 2 + 1.5rem));
}
.hero img { width: 100%; height: auto; display: block; }
.hero-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.5rem; }

/* --- Izgara ve kartlar --- */

.grid { display: grid; gap: 1.25rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--bg-raised); border: 1px solid var(--line);
  border-radius: 8px; padding: 1.4rem;
}
.card h3 { color: var(--fg); }
.card p:last-child { margin-bottom: 0; }
.card .more { display: inline-block; margin-top: .5rem; font-size: .9rem; }

/* --- Kart galerisi (PCB render'lari) --- */

.boards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.board { margin: 0; }
.board img {
  width: 100%; height: auto; display: block; border-radius: 6px;
}
.board figcaption { margin-top: .85rem; }
.board .name {
  font-family: var(--mono); font-size: .82rem; color: var(--fg);
  display: block; margin-bottom: .3rem;
}
.board .desc { font-size: .86rem; color: var(--fg-muted); margin: 0; max-width: none; }

/* --- Teknoloji yigini --- */

.stack { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem 2.5rem; margin: 0; }
.stack dt {
  font-family: var(--mono); font-size: .74rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent); margin-bottom: .4rem;
}
.stack dd { margin: 0; color: var(--fg-muted); font-size: .95rem; }

/* --- Surec adimlari --- */

.steps { counter-reset: step; display: grid; gap: 1.5rem; margin: 0; padding: 0; }
.step { display: grid; grid-template-columns: 2.5rem 1fr; gap: 1rem; }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--mono); font-size: .8rem; color: var(--accent);
  border-top: 1px solid var(--line); padding-top: .35rem;
}
.step h3 { margin-bottom: .3rem; }
.step p { margin-bottom: 0; }

/* --- Akis semasi ---
   SVG yerine HTML/CSS: etiketler dogal metin oldugu icin iki dilde ayri
   dosya gerekmiyor ve dar ekranda kendiliginden dikey diziliyor. */

.flow {
  display: flex; align-items: stretch; gap: 0; flex-wrap: wrap;
  margin: 2rem 0 1rem;
}
.flow-node {
  flex: 1 1 8rem; min-width: 7.5rem;
  background: var(--bg-raised); border: 1px solid var(--line);
  border-radius: 6px; padding: .85rem .9rem;
}
.flow-node .n {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--accent);
  display: block; margin-bottom: .35rem;
}
.flow-node .t { font-size: .88rem; color: var(--fg); line-height: 1.35; }
.flow-arrow {
  flex: 0 0 1.75rem; display: flex; align-items: center; justify-content: center;
  color: var(--fg-muted); font-size: 1.1rem; line-height: 1;
}
.flow-arrow::before { content: "\2192"; }   /* saga ok */

@media (max-width: 720px) {
  .flow { flex-direction: column; }
  .flow-node { flex: 1 1 auto; }
  .flow-arrow { flex: 0 0 1.5rem; }
  .flow-arrow::before { content: "\2193"; } /* asagi ok */
}

/* --- Tablolar --- */

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; min-width: 34rem; }
th, td { text-align: left; padding: .7rem .9rem; border-bottom: 1px solid var(--line); }
th {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent); font-weight: 600;
  white-space: nowrap;
}
td { color: var(--fg-muted); vertical-align: top; }
td:first-child { color: var(--fg); }

/* --- Eylem cagrisi --- */

.cta {
  display: inline-block; background: var(--accent); color: #0d1117;
  font-weight: 600; text-decoration: none;
  padding: .7rem 1.3rem; border-radius: 5px;
}
.cta:hover { filter: brightness(1.1); }
.cta-ghost {
  display: inline-block; color: var(--fg); text-decoration: none;
  border: 1px solid var(--line); padding: .7rem 1.3rem; border-radius: 5px;
}
.cta-ghost:hover { border-color: var(--fg-muted); }

/* --- Duyarli --- */

@media (max-width: 860px) {
  .hero, .grid-2, .grid-3, .stack { grid-template-columns: 1fr; }
  .hero { gap: 2rem; }
  .boards { grid-template-columns: repeat(2, 1fr); }
  .site-head { flex-wrap: wrap; gap: .9rem 1.2rem; }
  .site-nav { margin-left: 0; order: 3; width: 100%; }
  section { padding: 2.5rem 1.25rem; }
}
@media (max-width: 520px) {
  .boards { grid-template-columns: 1fr; }
}

/* --- Erisilebilirlik --- */

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}