/* SoCSilicon: cool wafer-grey ground, copper accent, teal signal traces */
:root {
  --bg: #EDEFF1;
  --surface: #F7F8F9;
  --alt: #E3E7EA;
  --ink: #12161C;
  --muted: #56606B;
  --line: #CBD1D7;
  --accent: #A8561F;
  --accent-ink: #FFFFFF;
  --signal: #1D6F80;
  --trace-bg: #F4F6F7;
  --trace-grid: #DDE2E6;

  --f-display: "Chakra Petch", "Bahnschrift", "Arial Narrow", sans-serif;
  --f-body: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --f-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --s-13: 0.8125rem;
  --s-15: 0.9375rem;
  --s-17: 1.0625rem;
  --s-22: 1.375rem;
  --s-30: clamp(1.625rem, 1.2rem + 1.6vw, 1.875rem);
  --s-44: clamp(2rem, 1.3rem + 2.6vw, 2.75rem);
  --s-64: clamp(2.5rem, 1.4rem + 4.4vw, 4rem);

  --wrap: 1160px;
  --gutter: clamp(16px, 4vw, 40px);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1216;
    --surface: #151A20;
    --alt: #12171C;
    --ink: #E6E9EC;
    --muted: #98A2AD;
    --line: #2A323B;
    --accent: #E08A4E;
    --accent-ink: #14100C;
    --signal: #5CC2D4;
    --trace-bg: #0B0F12;
    --trace-grid: #1C232A;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0E1216;
  --surface: #151A20;
  --alt: #12171C;
  --ink: #E6E9EC;
  --muted: #98A2AD;
  --line: #2A323B;
  --accent: #E08A4E;
  --accent-ink: #14100C;
  --signal: #5CC2D4;
  --trace-bg: #0B0F12;
  --trace-grid: #1C232A;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--s-17);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, canvas { max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--f-display); line-height: 1.1; margin: 0; text-wrap: balance; }
p { margin: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--f-mono);
  font-size: var(--s-13);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font: 600 var(--s-15) / 1 var(--f-body);
  padding: 0.9rem 1.3rem;
  border: 1.5px solid var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  border-radius: 2px;
  cursor: pointer;
  transition: transform .15s ease, background-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); }
.btn-small { padding: 0.6rem 0.9rem; font-size: var(--s-13); }

/* Header */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-row { display: flex; align-items: center; gap: 2rem; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 0.55rem; text-decoration: none; font: 600 1.25rem/1 var(--f-display); letter-spacing: 0.01em; }
.brand b { font-weight: 600; color: var(--accent); }
.brand-mark { width: 60px; height: 60px; color: var(--ink); flex: none; overflow: visible; }
.brand-ring-text { font: 700 10.5px var(--f-display); letter-spacing: 0.03em; fill: currentColor; }
.nav { display: flex; gap: 1.6rem; margin-left: auto; }
.nav a { text-decoration: none; font-size: var(--s-15); color: var(--muted); }
.nav a:hover { color: var(--ink); }

/* Hero */
.hero { padding-block: clamp(3rem, 7vw, 6rem) clamp(1rem, 2vw, 1.5rem); display: grid; gap: 1.5rem; }
.hero h1 { font-size: var(--s-64); font-weight: 700; letter-spacing: -0.01em; max-width: 20ch; }
.hero h1 span { color: var(--muted); font-weight: 600; }
.lede { font-size: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem); color: var(--muted); max-width: 62ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem; }


/* Sections */
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section-alt { background: var(--alt); border-block: 1px solid var(--line); }
.section-head { display: grid; gap: 0.9rem; max-width: 64ch; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head h2 { font-size: var(--s-44); font-weight: 600; }
.section-head p:not(.eyebrow) { color: var(--muted); }

/* Services */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2.5rem 2rem; }
.service { display: flex; flex-direction: column; gap: 0.7rem; padding-top: 1.1rem; border-top: 2px solid var(--ink); }
.service h3 { font-size: var(--s-22); font-weight: 600; }
.service p { color: var(--muted); font-size: var(--s-15); }
.tags { list-style: none; padding: 0; margin: auto 0 0; display: flex; flex-wrap: wrap; gap: 0.4rem; padding-top: 0.4rem; }
.tags li { font: 400 0.75rem/1 var(--f-mono); padding: 0.4rem 0.5rem; border: 1px solid var(--line); color: var(--ink); border-radius: 2px; }

/* Industries */
.industries { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }
.industry {
  display: flex; flex-direction: column; gap: 0.8rem;
  background: var(--surface);
  border: 1px solid var(--line);
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: 3px;
}
.industry h3 { font-size: var(--s-30); font-weight: 600; }
.industry > p { color: var(--muted); font-size: var(--s-15); }
.spec { margin: 0.4rem 0 0; display: grid; gap: 0; font-family: var(--f-mono); font-size: 0.8rem; border-top: 1px dashed var(--line); }
.spec div { display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem; padding-block: 0.55rem; border-bottom: 1px dashed var(--line); }
.spec dt { color: var(--signal); }
.spec dd { margin: 0; }
.also { margin-top: 2rem; color: var(--muted); max-width: 70ch; }

/* Recognition */
.awards { list-style: none; margin: 0; padding: 0; display: grid; max-width: 52rem; }
.awards li { display: grid; grid-template-columns: 5.5rem minmax(0, 1fr); gap: 1.5rem; padding-block: 1.25rem; border-top: 1px solid var(--line); }
.awards li:last-child { border-bottom: 1px solid var(--line); }
.award-year { font: 500 var(--s-15)/1.6 var(--f-mono); color: var(--accent); font-variant-numeric: tabular-nums; }
.awards h3 { font-size: var(--s-22); font-weight: 600; }
.awards p { color: var(--muted); font-size: var(--s-15); margin-top: 0.3rem; }
.awards a { color: var(--accent); text-underline-offset: 3px; white-space: nowrap; }
@media (max-width: 640px) { .awards li { grid-template-columns: 1fr; gap: 0.3rem; } }

/* Process pipeline */
.pipeline { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; counter-reset: none; }
.pipeline li { position: relative; display: flex; flex-direction: column; gap: 0.6rem; padding: 1.25rem 1.25rem 0 0; border-top: 2px solid var(--line); }
.pipeline li::before {
  content: ""; position: absolute; top: -7px; left: 0;
  width: 12px; height: 12px; background: var(--bg); border: 2px solid var(--accent);
}
.pipeline li:not(:last-child)::after {
  content: ""; position: absolute; top: -6px; right: 14px;
  border: 5px solid transparent; border-left: 8px solid var(--line);
}
.stage { font: 500 var(--s-13)/1 var(--f-mono); color: var(--accent); }
.pipeline h3 { font-size: var(--s-22); font-weight: 600; }
.pipeline p { color: var(--muted); font-size: var(--s-15); }

/* Platforms */
.platforms { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 3rem; align-items: start; }
.platforms .section-head { margin-bottom: 0; }
.platform-list { margin: 0; display: grid; }
.platform-list div { display: grid; grid-template-columns: 9rem 1fr; gap: 1rem; padding-block: 0.9rem; border-bottom: 1px solid var(--line); }
.platform-list div:first-child { padding-top: 0; }
.platform-list dt { font: 600 var(--s-15)/1.5 var(--f-display); letter-spacing: 0.02em; }
.platform-list dd { margin: 0; font-size: var(--s-15); color: var(--muted); }

/* Contact */
.contact-copy { display: grid; gap: 1rem; max-width: 64ch; }
.contact-copy h2 { font-size: var(--s-44); font-weight: 600; }
.contact-copy > p:not(.eyebrow) { color: var(--muted); }
.contact-direct { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.9rem; padding-block: 1rem; border-block: 1px solid var(--line); margin-top: 0.5rem; }
.contact-direct .label { font: 400 var(--s-13)/1 var(--f-mono); color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.email { font: 500 var(--s-17)/1.3 var(--f-mono); word-break: break-all; color: var(--accent); text-underline-offset: 3px; }
.copy { font: 500 0.75rem/1 var(--f-mono); padding: 0.45rem 0.6rem; background: transparent; color: var(--ink); border: 1px solid var(--line); border-radius: 2px; cursor: pointer; }
.copy:hover { border-color: var(--ink); }
.fine { font-size: var(--s-15); }


/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 1.75rem; font-size: var(--s-13); color: var(--muted); }
.footer-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem; }
.footer-row a { text-decoration: none; }
.footer-row a:hover { color: var(--ink); }

/* ---- Light / dark switch ---- */
.theme-toggle {
  display: inline-grid; place-items: center; flex: none;
  width: 36px; height: 36px; padding: 0;
  background: transparent; color: var(--ink);
  border: 1px solid var(--line); border-radius: 2px; cursor: pointer;
}
.theme-toggle:hover { border-color: var(--ink); }
.theme-toggle svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.icon-sun { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun { display: block; }
  :root:not([data-theme="light"]) .icon-moon { display: none; }
}
:root[data-theme="dark"] .icon-sun { display: block; }
:root[data-theme="dark"] .icon-moon { display: none; }
.header-row .btn-small { margin-left: 0; }

/* ---- Blog ---- */
.nav a[aria-current="page"] { color: var(--ink); }
.section-rule { border-bottom: 1px solid var(--line); }
.section-head-row { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 1rem; max-width: none; }
.section-head-row > div { display: grid; gap: 0.9rem; }
.section-head a { color: inherit; }
.page-title { font-size: var(--s-64); font-weight: 700; }
.prose a { color: var(--accent); text-underline-offset: 3px; }

.post-list { list-style: none; margin: 0; padding: 0; display: grid; }
.post-item { display: grid; gap: 0.55rem; padding-block: 1.6rem; border-top: 1px solid var(--line); }
.post-item:last-child { border-bottom: 1px solid var(--line); }
.post-item h3 { font-size: var(--s-30); font-weight: 600; }
.post-item h3 a { text-decoration: none; }
.post-item h3 a:hover { color: var(--accent); }
.post-item > p { color: var(--muted); max-width: 70ch; }
.post-meta { display: flex; flex-wrap: wrap; gap: 0.3rem 1.2rem; font: 400 var(--s-13)/1.4 var(--f-mono); color: var(--muted); font-variant-numeric: tabular-nums; }
.draft { color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; }
.tags a { text-decoration: none; }
.tags li:has(a):hover { border-color: var(--ink); }
.post-item .tags, .post-header .tags { margin: 0; padding-top: 0.2rem; }
.tag-cloud { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; margin-bottom: 2rem; }
.tag-cloud .label { font: 400 var(--s-13)/1 var(--f-mono); color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.tag-cloud .tags { margin: 0; padding: 0; }
.empty { color: var(--muted); }

.post { max-width: calc(46rem + 2 * var(--gutter)); padding-block: clamp(3rem, 7vw, 5rem); }
.post-header { display: grid; gap: 1rem; padding-bottom: 2rem; margin-bottom: 2.5rem; border-bottom: 1px solid var(--line); }
.post-header .eyebrow a { color: inherit; text-decoration: none; }
.post-header h1 { font-size: var(--s-44); font-weight: 700; }
.post-lede { font-size: 1.2rem; color: var(--muted); }

.prose { font-size: 1.0625rem; line-height: 1.75; }
.prose > * + * { margin-top: 1.25em; }
.prose h2 { font-size: var(--s-30); font-weight: 600; margin-top: 2.2em; }
.prose h3 { font-size: var(--s-22); font-weight: 600; margin-top: 1.8em; }
.prose h2 + *, .prose h3 + * { margin-top: 0.75em; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li + li { margin-top: 0.4em; }
.prose strong { font-weight: 600; }
.prose img { display: block; border: 1px solid var(--line); border-radius: 3px; }
.prose blockquote { margin-inline: 0; padding: 0.2rem 0 0.2rem 1.2rem; border-left: 3px solid var(--accent); color: var(--muted); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin-block: 2.5em; }
.prose code, .prose pre { font-variant-ligatures: none; font-feature-settings: "calt" 0, "liga" 0; }
.prose :not(pre) > code { font-family: var(--f-mono); font-size: 0.88em; padding: 0.12em 0.35em; background: var(--alt); border: 1px solid var(--line); border-radius: 2px; }
.prose pre { font-family: var(--f-mono); font-size: 0.85rem; line-height: 1.6; padding: 1rem 1.2rem; border: 1px solid var(--line); border-radius: 3px; overflow-x: auto; }
.prose pre code { font-family: inherit; }
.prose table { display: block; overflow-x: auto; border-collapse: collapse; font-size: 0.95rem; }
.prose th, .prose td { text-align: left; padding: 0.5rem 0.9rem 0.5rem 0; border-bottom: 1px solid var(--line); }
.prose th { font-family: var(--f-mono); font-size: 0.8rem; font-weight: 500; color: var(--muted); }

/* Code colors: Shiki writes light colors inline and dark ones as variables */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .astro-code,
  :root:not([data-theme="light"]) .astro-code span { color: var(--shiki-dark) !important; background-color: var(--shiki-dark-bg) !important; }
}
:root[data-theme="dark"] .astro-code,
:root[data-theme="dark"] .astro-code span { color: var(--shiki-dark) !important; background-color: var(--shiki-dark-bg) !important; }

.post-cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem 2rem; margin-top: 3.5rem; padding: 1.5rem; background: var(--surface); border: 1px solid var(--line); border-radius: 3px; }
.post-cta p { max-width: 48ch; color: var(--muted); }
.post-cta strong { color: var(--ink); }
.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2.5rem; }
.post-nav a { display: grid; gap: 0.3rem; text-decoration: none; font: 600 var(--s-17)/1.3 var(--f-display); padding-top: 1rem; border-top: 2px solid var(--line); }
.post-nav a:hover { border-color: var(--accent); }
.post-nav a span { font: 400 var(--s-13)/1 var(--f-mono); color: var(--muted); }
.post-nav .next { text-align: right; }
.footer-links { display: flex; gap: 1.25rem; }
@media (max-width: 640px) { .post-nav { grid-template-columns: 1fr; } .post-nav .next { text-align: left; } }

/* Responsive */
@media (max-width: 960px) {
  .services { grid-template-columns: repeat(2, 1fr); }
  .pipeline { grid-template-columns: 1fr; gap: 0; }
  .pipeline li { border-top: 0; border-left: 2px solid var(--line); padding: 0 0 2rem 1.75rem; }
  .pipeline li:last-child { padding-bottom: 0; }
  .pipeline li::before { top: 2px; left: -7px; }
  .pipeline li::after { display: none; }
  .platforms { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav { margin-left: auto; }
  .nav a:not([href="/blog/"]) { display: none; }
  .header-row { gap: 0.75rem; }
}
@media (max-width: 640px) {
  .services, .industries { grid-template-columns: 1fr; }
  .spec div { grid-template-columns: 5.5rem 1fr; gap: 0.75rem; }
  .platform-list div { grid-template-columns: 1fr; gap: 0.2rem; }
  .hide-sm { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .btn:hover { transform: none; }
}

.header-actions { display: flex; align-items: center; gap: 0.6rem; }