/* Layout: single centered column, 1040px max. Featured work gets a two-column
   split (story + spec sheet); everything else is headed sections on a quiet grid. */

@font-face { font-family: "Inter"; src: url("fonts/inter-latin-wght-normal.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Space Grotesk"; src: url("fonts/space-grotesk-latin-wght-normal.woff2") format("woff2"); font-weight: 300 700; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --surface: #ffffff;
  --ink: #10151d;
  --ink-soft: #4b5563;
  --line: #dfe4ea;
  --accent: #1d4ed8;
  --accent-ink: #ffffff;
  --accent-soft: #e8eefc;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --radius: 10px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.wrap { max-width: 1040px; margin: 0 auto; padding-inline: 24px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; z-index: 20; background: var(--accent); color: var(--accent-ink); padding: 8px 12px; border-radius: var(--radius); }

a { color: var(--accent); }
a:focus-visible, .btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); font-weight: 600; letter-spacing: -0.02em; max-width: 21ch; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 600; letter-spacing: -0.015em; }
h3 { font-size: 1.1rem; font-weight: 600; }
p { margin: 0; }


.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}
.lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 62ch; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-row { display: flex; align-items: center; gap: 24px; min-height: 60px; }
.brand { font-family: var(--font-display); font-weight: 600; font-size: 1.1rem; color: var(--ink); text-decoration: none; margin-right: auto; }
.site-header nav { display: flex; gap: 22px; }
.site-header nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.93rem; font-weight: 500; }
.site-header nav a:hover { color: var(--ink); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  font-weight: 600; font-size: 0.95rem;
  text-decoration: none;
  transition: border-color 0.15s, transform 0.15s;
}
.btn:hover { border-color: var(--ink-soft); transform: translateY(-1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { border-color: var(--accent); filter: brightness(1.08); }
.btn-small { padding: 7px 12px; font-size: 0.88rem; }
.btn-large { padding: 14px 22px; font-size: 1rem; }
.icon { width: 16px; height: 16px; flex: none; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Hero */
.hero { padding-block: 88px 80px; }
.hero .wrap { display: flex; flex-direction: column; gap: 24px; }
.hero .actions { margin-top: 8px; }

/* Sections */
.section { padding-block: 72px; border-top: 1px solid var(--line); }
.section:nth-of-type(even) { background: var(--bg-alt); }
.section .wrap { display: flex; flex-direction: column; gap: 32px; }
.section-head { display: flex; flex-direction: column; gap: 10px; }
.role { color: var(--ink-soft); font-weight: 500; }
.sep { color: var(--line); margin-inline: 6px; }

/* Featured: Technotonin */
.feature { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 40px; align-items: start; }
.feature-copy { display: flex; flex-direction: column; gap: 18px; align-items: flex-start; max-width: 60ch; }
.feature-copy .btn { margin-top: 8px; }

.datasheet {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
}
.datasheet-title { font-family: var(--font-mono); font-size: 0.78rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.datasheet dl { margin: 0; }
.datasheet dl > div { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; padding-block: 11px; border-bottom: 1px dashed var(--line); }
.datasheet dl > div:last-child { border-bottom: 0; padding-bottom: 0; }
.datasheet dt { color: var(--ink-soft); font-size: 0.92rem; }
.datasheet dd { margin: 0; font-family: var(--font-mono); font-weight: 500; font-size: 0.98rem; text-align: right; font-variant-numeric: tabular-nums; }

/* Blocks */
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.block {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  display: flex; flex-direction: column; gap: 12px;
}
.block ul, .plain-list { margin: 0; padding-left: 1.1em; display: flex; flex-direction: column; gap: 8px; }
.block li, .plain-list li, .block p { color: var(--ink-soft); font-size: 0.98rem; }
.block li::marker, .plain-list li::marker { color: var(--accent); }
.plain-list { max-width: 70ch; }
.plain-list li { font-size: 1.02rem; }
.mt { margin-top: 12px; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.tags span { font-family: var(--font-mono); font-size: 0.76rem; padding: 3px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--ink); }

/* Skills */
.skills { margin: 0; border-top: 1px solid var(--line); }
.skills > div { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 24px; padding-block: 14px; border-bottom: 1px solid var(--line); }
.skills dt { font-family: var(--font-mono); font-size: 0.8rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink); padding-top: 3px; }
.skills dd { margin: 0; color: var(--ink-soft); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 28px; color: var(--ink-soft); font-size: 0.88rem; }

/* Narrow screens */
@media (max-width: 820px) {
  .site-header nav { display: none; }
  .feature, .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .hero { padding-block: 56px 52px; }
  .section { padding-block: 52px; }
  .skills > div { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .wrap { padding-inline: 20px; }
}