/* =========================================================
   Devin Yarak — Portfolio
   Theme: engineering drawing (light) / blueprint (dark)
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --paper: #F5F3EE;
  --paper-2: #ECE8DF;
  --surface: #FBFAF7;
  --ink: #16191D;
  --ink-2: #3D434A;
  --muted: #5B6168;
  --line: #CBC5B8;
  --line-strong: #8F897C;
  --grid: rgba(30, 78, 140, 0.07);
  --grid-major: rgba(30, 78, 140, 0.12);
  --accent: #1E4E8C;
  --accent-hover: #163C6D;
  --on-accent: #FFFFFF;
  --mark: #B23E0C;
  --mark-soft: rgba(178, 62, 12, 0.10);
  --bar: #1E4E8C;
  --shadow: 0 1px 0 rgba(22, 25, 29, 0.04), 0 8px 24px -16px rgba(22, 25, 29, 0.25);

  --font-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px; --s-5: 24px;
  --s-6: 32px; --s-7: 48px; --s-8: 64px; --s-9: 96px;

  --radius: 3px;
  --header-h: 64px;
  --max-w: 1160px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 150ms;
  --dur: 240ms;

  color-scheme: light;
}

/* Blueprint (dark) palette */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0E1A2B; --paper-2: #112036; --surface: #13243B;
    --ink: #E9EFF7; --ink-2: #C3CFDE; --muted: #9AABC0;
    --line: #2A4061; --line-strong: #4C6A92;
    --grid: rgba(147, 197, 253, 0.06); --grid-major: rgba(147, 197, 253, 0.11);
    --accent: #8CBDF7; --accent-hover: #B4D5FB; --on-accent: #0E1A2B;
    --mark: #F7A072; --mark-soft: rgba(247, 160, 114, 0.12);
    --bar: #8CBDF7;
    --shadow: 0 8px 24px -16px rgba(0, 0, 0, 0.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0E1A2B; --paper-2: #112036; --surface: #13243B;
  --ink: #E9EFF7; --ink-2: #C3CFDE; --muted: #9AABC0;
  --line: #2A4061; --line-strong: #4C6A92;
  --grid: rgba(147, 197, 253, 0.06); --grid-major: rgba(147, 197, 253, 0.11);
  --accent: #8CBDF7; --accent-hover: #B4D5FB; --on-accent: #0E1A2B;
  --mark: #F7A072; --mark-soft: rgba(247, 160, 114, 0.12);
  --bar: #8CBDF7;
  --shadow: 0 8px 24px -16px rgba(0, 0, 0, 0.6);
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--paper);
  /* drafting grid: 8px minor, 40px major */
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 40px 40px, 40px 40px, 8px 8px, 8px 8px;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--accent-hover); }
h1, h2, h3, h4 { line-height: 1.2; margin: 0; text-wrap: balance; }
p { margin: 0 0 var(--s-4); }
ul, ol { margin: 0; padding: 0; }
strong { font-weight: 600; color: var(--ink); }
sub { font-size: 0.7em; }

.mono { font-family: var(--font-mono); font-size: 0.875rem; letter-spacing: 0; }
.muted { color: var(--muted); font-weight: 400; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

:focus-visible {
  outline: 2px solid var(--mark);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute; left: 16px; top: -48px; z-index: 1000;
  background: var(--ink); color: var(--paper); padding: 8px 14px;
  font-weight: 600; text-decoration: none; border-radius: var(--radius);
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: 12px; color: var(--paper); }

.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 16px;
}
@media (min-width: 768px) { .container { padding-inline: 32px; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 10px 18px;
  font: 600 0.9375rem/1.2 var(--font-sans);
  color: var(--on-accent); background: var(--accent);
  border: 1px solid var(--accent); border-radius: var(--radius);
  text-decoration: none; cursor: pointer;
  touch-action: manipulation;
  transition: background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.btn:active { transform: translateY(1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { background: var(--paper-2); color: var(--ink); border-color: var(--ink); }
.btn-small { min-height: 36px; padding: 6px 14px; font-size: 0.875rem; }
.btn-block { width: 100%; flex-wrap: wrap; }
.file-meta { font: 500 0.75rem var(--font-mono); opacity: 0.8; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); min-height: 44px; }
.brand:hover { color: var(--ink); }
.brand-mark {
  display: grid; place-items: center; width: 34px; height: 34px;
  border: 1.5px solid var(--ink); font: 600 0.8125rem var(--font-mono);
  letter-spacing: 0.04em;
}
.brand-name { font-weight: 600; font-size: 1rem; letter-spacing: -0.01em; }

.nav-toggle {
  display: inline-grid; place-items: center; width: 44px; height: 44px;
  background: transparent; color: var(--ink); border: 1px solid var(--line); border-radius: var(--radius);
  cursor: pointer;
}
.nav-toggle .i-close { display: none; }
.nav-toggle[aria-expanded="true"] .i-open { display: none; }
.nav-toggle[aria-expanded="true"] .i-close { display: inline; }

.site-nav {
  position: fixed; inset: var(--header-h) 0 auto 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: var(--s-3) 16px var(--s-5);
  display: none;
  box-shadow: var(--shadow);
}
.site-nav.is-open { display: block; }
.site-nav ul { list-style: none; display: grid; gap: 2px; }
.site-nav a:not(.btn) {
  display: flex; align-items: center; min-height: 48px; padding: 0 var(--s-3);
  color: var(--ink-2); text-decoration: none; font-weight: 500;
  border-left: 2px solid transparent;
}
.site-nav a:not(.btn):hover { color: var(--ink); background: var(--paper-2); }
.site-nav a.is-active { color: var(--ink); border-left-color: var(--mark); }
.nav-actions { display: flex; align-items: center; gap: var(--s-3); margin-top: var(--s-3); padding-inline: var(--s-3); }

.theme-toggle {
  display: inline-grid; place-items: center; width: 40px; height: 40px;
  background: transparent; color: var(--ink-2); border: 1px solid var(--line); border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--dur-fast), border-color var(--dur-fast);
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink); }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .site-nav {
    position: static; display: flex; align-items: center; gap: var(--s-5);
    background: none; border: 0; padding: 0; box-shadow: none;
  }
  .site-nav ul { display: flex; gap: var(--s-1); }
  .site-nav a:not(.btn) {
    min-height: 40px; padding: 0 var(--s-3); font-size: 0.9375rem;
    border-left: 0; border-bottom: 2px solid transparent;
  }
  .site-nav a:not(.btn):hover { background: none; }
  .site-nav a.is-active { border-bottom-color: var(--mark); }
  .nav-actions { margin: 0; padding: 0; }
}

/* ---------- Hero ---------- */
.hero { padding-block: var(--s-7) var(--s-7); }
@media (min-width: 900px) { .hero { padding-block: var(--s-9) var(--s-8); } }
.hero-grid { display: grid; gap: var(--s-6); align-items: start; }
@media (min-width: 900px) { .hero-grid { grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: var(--s-8); } }

.eyebrow {
  font: 500 0.8125rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--mark); margin-bottom: var(--s-4);
}
.hero h1 {
  font-size: clamp(2.125rem, 5.4vw, 3.75rem);
  font-weight: 700; letter-spacing: -0.025em; line-height: 1.05;
  margin-bottom: var(--s-5);
}
.hl { position: relative; white-space: nowrap; }
.hl::after {
  content: ""; position: absolute; left: -2px; right: -2px; bottom: 0.06em; height: 0.32em;
  background: var(--mark-soft); border-bottom: 2px solid var(--mark); z-index: -1;
}
.lede { font-size: clamp(1.0625rem, 1.6vw, 1.1875rem); color: var(--ink-2); max-width: 62ch; margin-bottom: var(--s-6); }
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--s-3); }

/* Title block (drawing-sheet style) */
.title-block {
  background: var(--surface);
  border: 1.5px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  box-shadow: 6px 6px 0 var(--grid-major);
}
.tb-head, .tb-foot {
  display: flex; justify-content: space-between; gap: var(--s-3);
  padding: 8px 12px; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.75rem;
  color: var(--muted);
}
.tb-head { border-bottom: 1.5px solid var(--ink); color: var(--ink); font-weight: 600; }
.tb-foot { border-top: 1px solid var(--line); }
.title-block dl { margin: 0; }
.title-block dl > div {
  display: grid; grid-template-columns: 76px 1fr; border-bottom: 1px solid var(--line);
}
.title-block dl > div:last-child { border-bottom: 0; }
.title-block dt {
  padding: 8px 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em;
  font-size: 0.6875rem; border-right: 1px solid var(--line); align-self: stretch; display: flex; align-items: center;
}
.title-block dd { margin: 0; padding: 8px 12px; color: var(--ink); font-family: var(--font-sans); font-size: 0.9375rem; font-weight: 500; }

/* Stat strip */
.stat-strip {
  list-style: none; margin-top: var(--s-7);
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1.5px solid var(--ink); border-bottom: 1px solid var(--line);
}
.stat-strip li { padding: var(--s-4) var(--s-3) var(--s-4) 0; border-bottom: 1px solid var(--line); }
.stat-strip li:nth-child(odd) { padding-right: var(--s-4); border-right: 1px solid var(--line); }
.stat-strip li:nth-child(even) { padding-left: var(--s-4); }
.stat-strip li:nth-last-child(-n+2) { border-bottom: 0; }
@media (min-width: 900px) {
  .stat-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .stat-strip li, .stat-strip li:nth-child(odd), .stat-strip li:nth-child(even) {
    padding: var(--s-5) var(--s-5); border-bottom: 0; border-right: 1px solid var(--line);
  }
  .stat-strip li:first-child { padding-left: 0; }
  .stat-strip li:last-child { border-right: 0; }
}
.stat-num { display: block; font: 600 clamp(1.5rem, 3vw, 2rem)/1.1 var(--font-mono); color: var(--ink); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.stat-label { display: block; margin-top: 6px; font-size: 0.875rem; color: var(--muted); line-height: 1.4; }

/* ---------- Sections ---------- */
.section { padding-block: var(--s-8); border-top: 1px solid var(--line); }
@media (min-width: 900px) { .section { padding-block: var(--s-9); } }
.section-alt { background: color-mix(in srgb, var(--paper-2) 70%, transparent); }

.section-head { margin-bottom: var(--s-6); max-width: 760px; }
.section-num {
  font: 500 0.8125rem var(--font-mono); color: var(--mark); letter-spacing: 0.08em;
  margin-bottom: var(--s-2);
  display: flex; align-items: center; gap: var(--s-3);
}
.section-num::after { content: ""; flex: 0 0 48px; height: 1px; background: var(--mark); }
.section-head h2 { font-size: clamp(1.75rem, 3.6vw, 2.5rem); letter-spacing: -0.02em; font-weight: 700; }
.section-sub { margin-top: var(--s-3); color: var(--ink-2); font-size: 1.0625rem; }

.h-label {
  font: 600 0.75rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--muted); margin: var(--s-5) 0 var(--s-3);
}

/* ---------- About ---------- */
.about-grid { display: grid; gap: var(--s-6); }
@media (min-width: 900px) { .about-grid { grid-template-columns: 320px minmax(0, 1fr); gap: var(--s-8); align-items: start; } }
.about-copy { max-width: 68ch; color: var(--ink-2); font-size: 1.0625rem; }
.edu-list { list-style: none; border-top: 1px solid var(--line); }
.edu-list li {
  display: flex; justify-content: space-between; align-items: baseline; gap: var(--s-4); flex-wrap: wrap;
  padding: var(--s-3) 0; border-bottom: 1px solid var(--line);
}
.edu-list li > div { display: flex; flex-direction: column; }
.edu-list li span:not(.mono) { color: var(--muted); font-size: 0.9375rem; }

/* ---------- Placeholders (swap for <img>) ---------- */
.ph {
  position: relative; margin: 0;
  aspect-ratio: 16 / 10;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  padding: var(--s-5); text-align: center;
  background:
    linear-gradient(to top right, transparent calc(50% - 0.5px), var(--line) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(to top left, transparent calc(50% - 0.5px), var(--line) 50%, transparent calc(50% + 0.5px)),
    var(--surface);
  border: 1px dashed var(--line-strong);
  color: var(--muted);
}
.ph-portrait { aspect-ratio: 4 / 5; max-width: 360px; width: 100%; }
.ph-tag {
  position: absolute; top: 8px; left: 10px;
  font: 600 0.6875rem var(--font-mono); letter-spacing: 0.08em; color: var(--mark);
}
.ph-label {
  font-weight: 600; color: var(--ink-2); background: var(--surface); padding: 2px 8px; font-size: 0.9375rem;
}
.ph-hint { font: 0.75rem var(--font-mono); background: var(--surface); padding: 2px 6px; overflow-wrap: anywhere; }

/* Portrait */
.portrait {
  margin: 0; max-width: 360px; width: 100%;
  background: var(--surface); border: 1.5px solid var(--ink);
  box-shadow: 6px 6px 0 var(--grid-major);
}
.portrait img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.portrait figcaption {
  display: flex; justify-content: space-between; padding: 8px 12px;
  border-top: 1.5px solid var(--ink);
  font: 600 0.6875rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted);
}
.portrait figcaption span:first-child { color: var(--mark); }

/* Real images placed into figure slots */
.shot { margin: 0; border: 1px solid var(--line); background: var(--surface); }
.shot img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.shot figcaption { padding: 8px 12px; font-size: 0.875rem; color: var(--muted); border-top: 1px solid var(--line); }

/* ---------- Projects ---------- */
.project-index {
  list-style: none; counter-reset: none;
  display: grid; gap: 0; margin-bottom: var(--s-8);
  border-top: 1.5px solid var(--ink);
}
@media (min-width: 768px) { .project-index { grid-template-columns: 1fr 1fr; column-gap: var(--s-6); } }
.project-index a {
  display: grid; grid-template-columns: auto 1fr auto; grid-template-areas: "num title badge" "num meta badge";
  column-gap: var(--s-4); align-items: center;
  padding: var(--s-4) var(--s-2); min-height: 64px;
  border-bottom: 1px solid var(--line);
  text-decoration: none; color: var(--ink);
  transition: background-color var(--dur-fast) var(--ease-out);
}
.project-index a:hover { background: var(--paper); color: var(--ink); }
.pi-num { grid-area: num; font: 600 0.8125rem var(--font-mono); color: var(--mark); }
.pi-title { grid-area: title; font-weight: 600; }
.pi-meta { grid-area: meta; font-size: 0.8125rem; color: var(--muted); }
.project-index .badge { grid-area: badge; }

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font: 600 0.6875rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em;
  padding: 3px 7px; border-radius: 2px; white-space: nowrap; vertical-align: middle;
}
.badge-report { color: var(--accent); border: 1px solid currentColor; }

.project {
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--ink);
  padding: var(--s-5) 16px var(--s-6);
  margin-bottom: var(--s-7);
  box-shadow: var(--shadow);
}
@media (min-width: 768px) { .project { padding: var(--s-6) var(--s-6) var(--s-7); } }
.project:last-child { margin-bottom: 0; }
.project-head { margin-bottom: var(--s-5); padding-bottom: var(--s-5); border-bottom: 1px solid var(--line); }
.project-num { font: 500 0.75rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--mark); margin-bottom: var(--s-2); }
.project-head h3 { font-size: clamp(1.375rem, 2.6vw, 1.875rem); letter-spacing: -0.015em; font-weight: 700; margin-bottom: var(--s-3); }
.project-meta { display: flex; flex-wrap: wrap; gap: 4px 0; color: var(--muted); font-size: 0.9375rem; margin-bottom: var(--s-4); }
.project-meta span:not(:last-child)::after { content: "/"; margin: 0 10px; color: var(--line-strong); }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li {
  font: 500 0.8125rem/1.3 var(--font-mono); color: var(--ink-2);
  padding: 4px 9px; border: 1px solid var(--line); background: var(--paper); border-radius: 2px;
}

.project-body { display: grid; gap: var(--s-6); }
@media (min-width: 900px) { .project-body { grid-template-columns: minmax(0, 1fr) 300px; gap: var(--s-7); align-items: start; } }
.project-text { color: var(--ink-2); max-width: 70ch; }
.project-text > .h-label:first-child { margin-top: 0; }

.bullets { list-style: none; display: grid; gap: var(--s-3); margin-bottom: var(--s-4); }
.bullets li { position: relative; padding-left: 22px; }
.bullets li::before {
  content: ""; position: absolute; left: 2px; top: 0.62em; width: 9px; height: 9px;
  border: 1.5px solid var(--mark); transform: rotate(45deg);
}

/* Spec card */
.spec-card {
  border: 1.5px solid var(--ink); background: var(--paper);
  padding: 0; font-size: 0.9375rem;
}
@media (min-width: 900px) { .spec-card { position: sticky; top: calc(var(--header-h) + 24px); } }
.spec-title {
  font: 600 0.75rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.09em;
  padding: 10px 14px; border-bottom: 1.5px solid var(--ink);
}
.spec { margin: 0; }
.spec > div { display: flex; justify-content: space-between; gap: var(--s-3); padding: 9px 14px; border-bottom: 1px solid var(--line); }
.spec dt { color: var(--muted); }
.spec dd { margin: 0; font: 500 0.9375rem var(--font-mono); text-align: right; font-variant-numeric: tabular-nums; color: var(--ink); }
.spec-card .btn { border-radius: 0; border-width: 0; min-height: 52px; }
.status { color: var(--mark); }
.status::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: currentColor; margin-right: 6px; vertical-align: 1px; }

/* Media grids */
.media-grid { display: grid; gap: var(--s-4); margin-top: var(--s-6); }
@media (min-width: 640px) { .media-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) { .media-grid-3 { grid-template-columns: repeat(3, 1fr); } }

/* Bar chart */
.chart { margin: var(--s-6) 0 0; padding: var(--s-5) 0 0; border-top: 1px solid var(--line); }
.chart-cap { font-size: 0.9375rem; color: var(--ink-2); margin-bottom: var(--s-4); }
.chart-cap .mono { color: var(--mark); margin-right: 8px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.06em; }
.bars { list-style: none; display: grid; gap: 6px; }
.bars li {
  display: grid; grid-template-columns: minmax(0, 1fr) 46px; grid-template-areas: "name val" "bar bar";
  column-gap: var(--s-3); row-gap: 3px; align-items: center; font-size: 0.875rem;
}
@media (min-width: 640px) {
  .bars li { grid-template-columns: 200px minmax(0, 1fr) 46px; grid-template-areas: "name bar val"; }
}
.bar-name { grid-area: name; color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar { grid-area: bar; position: relative; height: 12px; background: var(--paper-2); }
/* 100 = cohort average reference line */
.bar::after {
  content: ""; position: absolute; top: -3px; bottom: -3px; width: 1px; background: var(--ink);
  left: calc((100 - var(--min)) / (var(--max) - var(--min)) * 100%);
}
.bar-fill {
  position: absolute; inset: 0 auto 0 0;
  width: calc((var(--v) - var(--min)) / (var(--max) - var(--min)) * 100%);
  background: var(--bar); opacity: 0.55;
}
.is-top .bar-fill { opacity: 1; background: var(--mark); }
.is-top .bar-name, .is-top .bar-val { color: var(--ink); font-weight: 600; }
.bar-val { grid-area: val; font-family: var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; }
.bars, .chart-cap { --min: 80; --max: 120; }
.chart::after {
  content: "Vertical rule = cohort average (100). Axis 80–120."; display: block; margin-top: var(--s-3);
  font: 0.75rem var(--font-mono); color: var(--muted);
}

/* Data table */
.table-wrap { margin-top: var(--s-6); overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; min-width: 520px; }
.data-table caption {
  text-align: left; padding: 10px 14px; font-size: 0.9375rem; color: var(--ink-2);
  border-bottom: 1px solid var(--line); background: var(--paper);
}
.data-table caption .mono { color: var(--mark); margin-right: 8px; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.06em; }
.data-table th {
  text-align: left; font: 600 0.75rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); padding: 10px 14px; border-bottom: 1.5px solid var(--ink); background: var(--paper);
}
.data-table td { padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table td:first-child { color: var(--muted); }
.data-table td:nth-child(2) { font-weight: 600; }
.data-table td:last-child { font-variant-numeric: tabular-nums; }

/* Schematic */
.schematic { margin: var(--s-6) 0 0; padding: var(--s-4); border: 1px solid var(--line); background: var(--paper); }
.sch-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.schematic svg { width: 100%; min-width: 620px; height: auto; display: block; }
@media (min-width: 700px) { .schematic svg { min-width: 0; } }
.schematic figcaption { margin: var(--s-3) 0 0; }
.sch-box rect { fill: var(--surface); stroke: var(--ink); stroke-width: 1.5; }
.sch-sensor rect { stroke: var(--mark); stroke-dasharray: 4 3; }
.schematic text { font-family: var(--font-mono); font-size: 13px; fill: var(--ink); text-anchor: middle; font-weight: 600; }
.schematic .sch-sub { font-size: 10.5px; fill: var(--muted); font-weight: 400; }
.schematic .sch-note { text-anchor: start; font-size: 11px; fill: var(--muted); font-weight: 400; }
.sch-shaft line { stroke: var(--ink); stroke-width: 4; }
.sch-bus path { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 6 4; }
.sch-bus text { font-size: 11px; fill: var(--accent); font-weight: 500; }

/* Gallery */
.gallery-label { margin-top: var(--s-6); }
.gallery { list-style: none; display: grid; gap: var(--s-3); grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (min-width: 768px) { .gallery { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.gallery a {
  display: block; text-decoration: none; color: var(--ink-2);
  border: 1px solid var(--line); background: #0B0F19;
  transition: border-color var(--dur-fast) var(--ease-out), transform var(--dur) var(--ease-out);
}
.gallery a:hover { border-color: var(--accent); transform: translateY(-2px); }
.gallery img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.gallery span {
  display: block; padding: 8px 10px; font-size: 0.8125rem; line-height: 1.35;
  background: var(--surface); border-top: 1px solid var(--line);
}

/* ---------- Experience ---------- */
.timeline { list-style: none; position: relative; margin-bottom: var(--s-7); }
.timeline::before { content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px; width: 1px; background: var(--line-strong); }
.timeline li { position: relative; padding: 0 0 var(--s-6) 32px; display: grid; gap: 4px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: 0; top: 6px; width: 11px; height: 11px;
  background: var(--paper); border: 1.5px solid var(--mark); transform: rotate(45deg);
}
@media (min-width: 768px) {
  .timeline::before { left: 205px; }
  .timeline li { grid-template-columns: 180px 1fr; gap: var(--s-7); padding-left: 0; }
  .timeline li::before { left: 200px; }
}
.tl-date { color: var(--muted); padding-top: 2px; }
.tl-body h4 { font-size: 1.1875rem; font-weight: 600; margin-bottom: 2px; }
.tl-org { color: var(--accent); font-weight: 500; margin-bottom: var(--s-2); }
.tl-body p:last-child { color: var(--ink-2); max-width: 68ch; margin: 0; }

.other-jobs { list-style: none; border-top: 1px solid var(--line); max-width: 760px; }
.other-jobs li {
  display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 4px var(--s-4);
  padding: var(--s-3) 0; border-bottom: 1px solid var(--line);
}
.other-jobs li > div { display: flex; flex-wrap: wrap; gap: 0 10px; align-items: baseline; }
.other-jobs li > div span { color: var(--muted); }
.other-jobs .mono { color: var(--muted); }

/* ---------- Skills ---------- */
.skills-grid { display: grid; gap: var(--s-4); }
@media (min-width: 640px) { .skills-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .skills-grid { grid-template-columns: repeat(3, 1fr); } }
.skill-card { background: var(--surface); border: 1px solid var(--line); border-top: 2px solid var(--ink); padding: var(--s-5); }
.skill-card h3 { font-size: 1.0625rem; font-weight: 600; margin-bottom: var(--s-4); }

/* ---------- Contact ---------- */
/* Tiles never wrap their text. Each needs ~260px (email is the widest),
   so the grid goes 1 → 2×2 → 4 across based on the space actually available. */
.contact .container { container-type: inline-size; }
.contact-list { list-style: none; display: grid; gap: var(--s-3); grid-template-columns: 1fr; }
@container (min-width: 540px) { .contact-list { grid-template-columns: repeat(2, 1fr); } }
@container (min-width: 1080px) { .contact-list { grid-template-columns: repeat(4, 1fr); } }
.contact-list a {
  display: flex; align-items: center; gap: var(--s-4);
  padding: var(--s-4) 18px; min-height: 72px;
  background: var(--surface); border: 1.5px solid var(--ink); color: var(--ink);
  text-decoration: none;
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.contact-list a:hover { background: var(--ink); color: var(--paper); }
.contact-list a:hover .cl-label { color: inherit; opacity: 0.75; }
.contact-list svg { flex: none; }
.contact-list a > span { display: flex; flex-direction: column; min-width: 0; }
.cl-label { font: 600 0.6875rem var(--font-mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); }
.cl-value { font-weight: 600; white-space: nowrap; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1.5px solid var(--ink); padding-block: var(--s-5); font-size: 0.875rem; color: var(--muted); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s-3); }
.footer-inner a { color: var(--ink-2); }

/* ---------- Reveal on scroll (progressive) ---------- */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity 500ms var(--ease-out), transform 500ms var(--ease-out); }
.js .reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Motion & print ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  .js .reveal { opacity: 1; transform: none; }
}

@media print {
  body { background: #fff; }
  .site-header, .skip-link, .hero-cta, .gallery, .ph, .nav-toggle { display: none !important; }
  .project, .section-alt { box-shadow: none; background: #fff; }
  .section { padding-block: 24px; }
}