/* ══════════════════════════════════════════════════════════════════════════
   newspaper.css  ·  Panashe Matema design system
   The only place design tokens are defined. Rules: see /DESIGN.md.
   Layers keep the cascade predictable, so components never need !important.
   ══════════════════════════════════════════════════════════════════════════ */
@layer tokens, base, layout, components, utilities;

/* ─────────────────────────────── tokens ─────────────────────────────── */
@layer tokens {
  :root {
    /* surface */
    --surface-primary: #f6f3ea;
    --surface-secondary: #eee9dc;
    --surface-inverse: #1a1814;
    --surface-desk: #8f887a;
    /* brand */
    --brand-primary: #1a1814;
    --brand-primary-hover: #a8431a;
    --brand-secondary: #a8431a;
    --brand-secondary-hover: #8e3714;
    /* text */
    --text-primary: #1a1814;
    --text-secondary: #5b5650;
    --text-muted: #6b665e;
    --text-inverse: #f6f3ea;
    --text-link: #1a1814;
    /* semantic */
    --success: #2e6b45;
    --warning: #8a5a12;
    --danger: #a13b2f;
    --info: #2f4f6b;
    /* border */
    --border-subtle: #c6c3bb;
    --border-faint: #dcd9d0;
    --border-strong: #1a1814;

    /* data: a results viewport is a screen inside the paper, not paper */
    --viewport-bg: #0b0d12;
    --viewport-text: #e8eef6;
    --axis-x: #ff5555; --axis-y: #55ff88; --axis-z: #6688ff;
    /* Abaqus default contour spectrum, max to min, exactly as the solver draws it */
    --spectrum-1: #ff0000;  --spectrum-2: #ff4400;  --spectrum-3: #ff8800;
    --spectrum-4: #ffbb00;  --spectrum-5: #ffee00;  --spectrum-6: #bbff00;
    --spectrum-7: #55ff00;  --spectrum-8: #00ff44;  --spectrum-9: #00ffcc;
    --spectrum-10: #00bbff; --spectrum-11: #0066ff; --spectrum-12: #0000ff;
    /* age on the sheet: coffee, tea and foxing */
    --stain: #7e5c2c;

    /* type */
    --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
    --font-text: "Fraunces", Georgia, "Times New Roman", serif;
    --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

    /* space: 8px grid, 4px sub-step */
    --space-1: 4px;  --space-2: 8px;  --space-3: 12px;
    --space-4: 16px; --space-5: 24px; --space-6: 32px;
    --space-7: 48px; --space-8: 64px; --space-9: 96px;

    /* size */
    --sheet: 1240px; --content: 1080px; --measure: 680px;
    --nav-h: 56px; --touch: 44px;
    --gutter: var(--space-4);
    --section-pad: var(--space-7);

    /* elevation */
    --shadow-1: 2px 2px 0 0 var(--border-strong);
    --shadow-2: 3px 3px 0 0 var(--border-strong);
    --shadow-3: rgba(26, 24, 20, 0.28) 0px 12px 24px -12px;
    --shadow-4: rgba(26, 24, 20, 0.36) 0px 24px 48px -16px;

    /* z-index */
    --z-base: 0; --z-decor: 10; --z-sticky: 100; --z-nav: 200;
    --z-overlay: 300; --z-modal: 400; --z-toast: 500;

    /* motion */
    --motion-fast: 160ms;
    --motion-draw: 900ms;
    --ease-draw: cubic-bezier(0.65, 0, 0.35, 1);

    /* rules */
    --rule-hair: 1px solid var(--border-subtle);
    --rule-strong: 1px solid var(--border-strong);
    --rule-double: 3px double var(--border-strong);
  }
  @media (min-width: 600px) { :root { --gutter: var(--space-5); --section-pad: var(--space-8); } }
  @media (min-width: 900px) { :root { --gutter: var(--space-7); --section-pad: var(--space-9); } }
}

/* ──────────────────────────────── base ──────────────────────────────── */
@layer base {
  *, *::before, *::after { box-sizing: border-box; }
  html {
    background: var(--surface-desk); -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--nav-h) + var(--space-4));   /* anchors land below the bar */
  }
  body {
    margin: 0;
    background-color: var(--surface-desk);
    color: var(--text-primary);
    font: 400 15px/1.65 var(--font-text);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }
  @media (min-width: 600px) { body { font-size: 16px; } }

  h1, h2, h3 { font-family: var(--font-display); color: var(--text-primary); margin: 0; }
  h1 { font-size: clamp(40px, 6.4vw, 88px); font-weight: 900; line-height: 0.94; letter-spacing: -0.02em; }
  h2 { font-size: clamp(30px, 3.6vw, 48px); font-weight: 900; line-height: 1.0;  letter-spacing: -0.015em; }
  h3 { font-size: clamp(21px, 2vw, 24px);   font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; }
  h4 { font: 600 17px/1.3 var(--font-text); margin: 0; }
  @media (min-width: 600px) { h4 { font-size: 18px; } }
  p { margin: 0 0 var(--space-4); max-width: var(--measure); }

  a { color: var(--text-link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
  a:hover { text-decoration-thickness: 2px; }

  :focus-visible { outline: 2px solid var(--brand-secondary); outline-offset: 2px; }

  img, svg, canvas { display: block; max-width: 100%; }
  figure { margin: 0; }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important;
                             transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  }
}

/* ─────────────────────────────── layout ─────────────────────────────── */
@layer layout {
  .sheet {
    max-width: var(--sheet); margin: 0 auto; min-height: 100vh;
    background-color: var(--surface-primary);
    /* newsprint tooth: decorative, text contrast checked over it */
    /* the sheet's age scrolls with the paper: a coffee ring, tea bloom, foxing and the centre fold */
    background-image:
      radial-gradient(circle at 92% 3.2%, transparent 0 34px, color-mix(in srgb, var(--stain) 15%, transparent) 34px 37px, color-mix(in srgb, var(--stain) 6%, transparent) 37px 42px, transparent 43px),
      radial-gradient(circle at 6% 41%, transparent 0 46px, color-mix(in srgb, var(--stain) 8%, transparent) 46px 49px, transparent 50px),
      radial-gradient(ellipse 220px 140px at 3% 12%, color-mix(in srgb, var(--stain) 7%, transparent), transparent 72%),
      radial-gradient(ellipse 260px 160px at 97% 58%, color-mix(in srgb, var(--stain) 6%, transparent), transparent 74%),
      radial-gradient(circle at 34% 22%, color-mix(in srgb, var(--stain) 10%, transparent) 0 2px, transparent 3px),
      radial-gradient(circle at 71% 47%, color-mix(in srgb, var(--stain) 9%, transparent) 0 2px, transparent 3px),
      radial-gradient(circle at 18% 78%, color-mix(in srgb, var(--stain) 8%, transparent) 0 2px, transparent 3px),
      linear-gradient(90deg, transparent calc(50% - 1px), rgba(26, 24, 20, 0.05) 50%, transparent calc(50% + 1px)),
      radial-gradient(rgba(26, 24, 20, 0.04) 0.6px, transparent 0.6px),
      radial-gradient(rgba(26, 24, 20, 0.03) 0.6px, transparent 0.6px);
    background-size: 100% 2400px, 100% 2400px, 100% 2400px, 100% 2400px, 100% 2400px, 100% 2400px, 100% 2400px, 100% 100%, 8px 8px, 12px 12px;
    background-repeat: repeat-y, repeat-y, repeat-y, repeat-y, repeat-y, repeat-y, repeat-y, no-repeat, repeat, repeat;
    background-position: 0 0, 0 0, 0 0, 0 0, 0 0, 0 0, 0 0, 0 0, 0 0, 4px 4px;
  }
  /* entrance: content rises into place once, only when scripts are running */
  .js .reveal { opacity: 0; transform: translateY(12px); transition: opacity 600ms ease-out, transform 600ms ease-out; }
  .js .reveal.visible { opacity: 1; transform: none; }
  @media (min-width: 1240px) {
    .sheet { box-shadow: 0 0 0 1px var(--border-strong); }
  }
  .wrap { max-width: var(--content); margin: 0 auto; padding-inline: var(--gutter); }
  .section { padding-block: var(--section-pad); }
  .section + .section { border-top: var(--rule-hair); }
  .measure { max-width: var(--measure); }

  .cols { display: grid; gap: 1px; background: var(--border-subtle); border: var(--rule-hair); }
  .cols > * { background: var(--surface-primary); padding: var(--space-5); }
  .cols h3 { margin: var(--space-2) 0 var(--space-3); }
  @media (min-width: 900px) { .cols-2 { grid-template-columns: 1fr 1fr; } .cols-3 { grid-template-columns: repeat(3, 1fr); } }
}

/* ───────────────────────────── components ───────────────────────────── */
@layer components {

  /* skip link */
  .skip {
    position: fixed; top: var(--space-2); left: var(--space-2); z-index: var(--z-toast);
    background: var(--brand-primary); color: var(--text-inverse);
    padding: var(--space-2) var(--space-4); font: 500 11px/1.2 var(--font-mono);
    letter-spacing: 0.14em; text-transform: uppercase; transform: translateY(-200%);
  }
  .skip:focus { transform: none; }

  /* labels */
  .label   { font: 500 11px/1.45 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); }
  .eyebrow { font: 500 10.5px/1.4 var(--font-mono); letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-muted); }
  .data    { font: 400 13px/1.5 var(--font-mono); }
  .standfirst { font: 400 17px/1.55 var(--font-text); color: var(--text-secondary); max-width: var(--measure); margin: 0; }
  @media (min-width: 600px) { .standfirst { font-size: 19px; } }

  /* ── navigation ── */
  .nav {
    position: sticky; top: 0; z-index: var(--z-nav);
    height: var(--nav-h);
    background: rgba(238, 233, 220, 0.94);
    border-bottom: var(--rule-strong);
    backdrop-filter: blur(6px);
  }
  .nav { transition: transform 240ms var(--ease-draw); }
  .nav.is-tucked { transform: translateY(-100%); }
  .nav .wrap { height: 100%; display: flex; align-items: center; gap: var(--space-4); }
  /* reading line: how far down the sheet you are */
  .read-line {
    position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
    background: var(--brand-secondary); transform-origin: left center; transform: scaleX(0);
    pointer-events: none;
  }
  .nav-brand { text-decoration: none; display: flex; flex-direction: column; line-height: 1.1; white-space: nowrap; }
  .nav-brand b { font: 900 17px/1 var(--font-display); letter-spacing: -0.01em; }
  .nav-brand span { font: 500 9.5px/1.3 var(--font-mono); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-muted); margin-top: var(--space-1); }
  .nav-links { list-style: none; margin: 0 0 0 auto; padding: 0; display: flex; gap: var(--space-1); }
  .nav-links a {
    display: flex; align-items: center; min-height: var(--touch); padding: 0 var(--space-3);
    font: 500 11px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--text-muted); text-decoration: none; white-space: nowrap;
  }
  .nav-links a:hover, .nav-links a[aria-current] {
    color: var(--text-primary); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px;
  }
  .nav .nav-cta { margin-left: var(--space-2); }
  .nav .nav-toggle { display: none; margin-left: auto; }
  .nav-tag-inline { color: var(--brand-secondary); margin: 0 0 var(--space-1); }
  /* Hobbies: a menu item that opens to show side work */
  .nav-sub { position: relative; }
  .nav-sub summary { list-style: none; cursor: pointer; }
  .nav-sub summary::-webkit-details-marker { display: none; }
  .nav-sub summary, .nav-sub a {
    display: flex; align-items: center; min-height: var(--touch); padding: 0 var(--space-3);
    font: 500 11px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--text-muted); text-decoration: none; white-space: nowrap;
  }
  .nav-sub summary::after { content: ""; width: 0; height: 0; margin-left: var(--space-2);
    border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 4px solid currentColor; transition: transform var(--motion-fast); }
  .nav-sub[open] summary::after { transform: rotate(180deg); }
  .nav-sub summary:hover, .nav-sub[open] summary, .nav-sub a:hover { color: var(--text-primary); }
  .nav-sub a:hover { text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 6px; }
  .nav-sub ul { list-style: none; margin: 0; padding: 0; }
  @media (min-width: 900px) {
    .nav-links a, .nav-sub summary { padding: 0 var(--space-2); letter-spacing: 0.1em; }
    .nav-sub ul {
      position: absolute; top: 100%; right: 0; min-width: 100%; padding: var(--space-1) 0;
      background: var(--surface-secondary); border: var(--rule-strong); box-shadow: var(--shadow-2);
    }
  }
  @media (min-width: 900px) and (max-width: 1199.98px) {
    .nav .nav-cta { display: none; }
    .nav .wrap { gap: var(--space-3); }
  }

  @media (max-width: 899.98px) {
    .nav .nav-toggle { display: inline-flex; }
    .nav .nav-cta { display: none; }
    .nav-links {
      position: absolute; top: var(--nav-h); left: 0; right: 0; margin: 0;
      flex-direction: column; gap: 0;
      background: var(--surface-secondary); border-bottom: var(--rule-strong);
      box-shadow: var(--shadow-3);
    }
    .nav-links[hidden] { display: none; }
    .nav-links li + li { border-top: var(--rule-hair); }
    .nav-links a, .nav-sub summary { min-height: 48px; padding: 0 var(--gutter); }
    .nav-sub li a { padding-left: calc(var(--gutter) + var(--space-5)); border-top: var(--rule-hair); }
  }

  /* ── buttons ── */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
    min-height: var(--touch); padding: var(--space-3) var(--space-5);
    font: 500 11px/1.2 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase;
    text-decoration: none; cursor: pointer; border-radius: 0; white-space: nowrap;
    transition: background-color var(--motion-fast) ease-out, transform var(--motion-fast) ease-out, box-shadow var(--motion-fast) ease-out;
  }
  .btn-primary { background: var(--brand-primary); color: var(--text-inverse); border: 1px solid var(--brand-primary); }
  .btn-primary:hover { background: var(--brand-primary-hover); border-color: var(--brand-primary-hover); }
  .btn-secondary { background: transparent; color: var(--text-primary); border: var(--rule-strong); box-shadow: var(--shadow-1); }
  .btn-secondary:hover { transform: translate(-1px, -1px); box-shadow: var(--shadow-2); }
  .btn-secondary:active { transform: translate(1px, 1px); box-shadow: none; }
  .btn-ghost {
    background: transparent; color: var(--text-primary); border: 0; padding-inline: 0;
    text-decoration: underline; text-underline-offset: 4px;
  }
  .btn-ghost:hover { text-decoration-thickness: 2px; }
  .btn[disabled], .btn[aria-disabled="true"] { opacity: 0.45; cursor: not-allowed; transform: none; box-shadow: none; }

  /* ── form ── */
  .input, .select {
    width: 100%; min-height: var(--touch); padding: var(--space-2) var(--space-3);
    background: var(--surface-primary); color: var(--text-primary);
    border: var(--rule-strong); border-radius: 0;
    font: 400 13px/1.5 var(--font-mono);
  }
  .input:focus-visible, .select:focus-visible { outline: 2px solid var(--brand-secondary); outline-offset: 2px; }

  /* ── masthead ── */
  .masthead { padding-block: var(--space-7) var(--space-6); border-bottom: var(--rule-double); }
  .masthead .dateline {
    display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap;
    border-top: var(--rule-strong); border-bottom: var(--rule-hair);
    padding-block: var(--space-2); margin-bottom: var(--space-5); row-gap: var(--space-1);
  }
  .masthead h1 { margin-bottom: var(--space-4); }

  /* ── section header ── */
  .section-head {
    display: grid; grid-template-columns: auto 1fr; align-items: end; gap: var(--space-4);
    padding-bottom: var(--space-3); margin-bottom: var(--space-6);
    border-bottom: var(--rule-double);
  }
  .section-no { font: 500 13px/1 var(--font-mono); letter-spacing: 0.1em; color: var(--text-muted); padding-bottom: var(--space-1); }

  /* ── tags and pills ── */
  .tags { display: flex; flex-wrap: wrap; gap: var(--space-2); list-style: none; margin: 0; padding: 0; }
  .tag  { font: 500 10px/1.3 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase;
          border: var(--rule-strong); padding: var(--space-1) var(--space-2); border-radius: 0; color: var(--text-primary); }
  .pill { font: 400 10.5px/1.3 var(--font-mono); border: var(--rule-hair); padding: var(--space-1) var(--space-2);
          border-radius: 0; color: var(--text-secondary); }

  /* ── item: one project / article / entry ── */
  .items { list-style: none; margin: 0; padding: 0; border-top: var(--rule-strong); }
  .item {
    display: grid; grid-template-columns: 40px 1fr; gap: var(--space-4);
    padding-block: var(--space-5); border-bottom: var(--rule-hair);
  }
  @media (min-width: 600px) { .item { grid-template-columns: 56px 1fr; } }
  .item-no { font: 500 12px/1.6 var(--font-mono); letter-spacing: 0.08em; color: var(--text-muted); }
  .item-client { margin-bottom: var(--space-2); }
  .item h3 { margin-bottom: var(--space-3); }
  .item-brief { margin: 0 0 var(--space-4); }
  .item-meta {
    display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2) var(--space-5);
    margin-bottom: var(--space-4);
  }
  .item-meta dt { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .item-meta dd { margin: 0; }
  .status { display: inline-flex; align-items: center; gap: var(--space-2); }
  .status::before { content: ""; width: 7px; height: 7px; background: currentColor; }
  .status-done { color: var(--success); }
  .status-live { color: var(--brand-secondary); }

  .item details { margin-top: var(--space-3); }
  .item summary {
    display: inline-flex; align-items: center; gap: var(--space-2); min-height: var(--touch);
    cursor: pointer; list-style: none;
    font: 500 11px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-primary);
  }
  .item summary::-webkit-details-marker { display: none; }
  .item summary::before { content: "+"; font-size: 14px; width: 12px; }
  .item details[open] summary::before { content: "\2212"; }
  .item details .tags { padding-top: var(--space-2); }

  /* ── filter bar ── */
  .filters { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-5); }
  .filter {
    min-height: var(--touch); padding: 0 var(--space-4); cursor: pointer;
    background: transparent; color: var(--text-primary); border: var(--rule-hair); border-radius: 0;
    font: 500 11px/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase;
  }
  .filter:hover { border-color: var(--border-strong); }
  .filter[aria-pressed="true"] { background: var(--brand-primary); color: var(--text-inverse); border-color: var(--brand-primary); }
  .count { font: 400 12px/1 var(--font-mono); color: var(--text-muted); margin: 0 0 var(--space-4); }

  /* ── panel ── */
  .panel { background: var(--surface-secondary); border: var(--rule-strong); padding: var(--space-5); border-radius: 0; }
  .panel-note { border-left: 3px solid var(--warning); background: var(--surface-secondary); padding: var(--space-4) var(--space-5); }

  /* ── drawing title block ── */
  .title-block {
    display: grid; grid-template-columns: 1fr 1fr; border: var(--rule-strong);
    font: 500 10px/1.35 var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase;
    max-width: 360px; margin-left: auto; background: var(--surface-primary);
  }
  .title-block > div { padding: var(--space-2) var(--space-3); border-top: var(--rule-hair); }
  .title-block > div:nth-child(odd) { border-right: var(--rule-hair); }
  .title-block .tb-head { grid-column: 1 / -1; border-top: 0; font-weight: 600; font-size: 11px; }
  .title-block small { display: block; color: var(--text-muted); font-size: 8.5px; letter-spacing: 0.16em; margin-bottom: var(--space-1); }

  /* ══ structural motion (driven by assets/newspaper.js) ══ */

  /* skyline mark in the nav */
  .nav-mark { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; min-height: var(--touch); }
  .nav-mark canvas { flex: 0 0 auto; }

  /* live beam under the masthead */
  .beam-strip { margin-top: var(--space-6); border-top: var(--rule-hair); padding-top: var(--space-3); }
  .beam-strip canvas { width: 100%; }
  .beam-strip figcaption {
    display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap;
    font: 400 11px/1.45 var(--font-mono); color: var(--text-muted); margin-top: var(--space-1);
  }

  /* glyph: a structural line drawing that draws itself in */
  .glyph { width: 100%; max-width: 168px; height: auto; overflow: visible; }
  .glyph path {
    fill: none; stroke: var(--text-primary); stroke-width: 1.5;
    stroke-linecap: round; stroke-linejoin: round;
    stroke-dasharray: var(--len, 400); stroke-dashoffset: var(--len, 400);
    transition: stroke-dashoffset var(--motion-draw) var(--ease-draw) var(--delay, 0ms);
  }
  .glyph .g2 { stroke: var(--text-secondary); stroke-width: 1.2; }
  .glyph .g3 { stroke: var(--brand-secondary); stroke-width: 1.5; }
  .glyph .gd { stroke: var(--text-muted); stroke-width: 1; }
  .glyph.is-drawn path { stroke-dashoffset: 0; }

  /* the item grid makes room for the glyph */
  .item { grid-template-areas: "no glyph" "no body"; }
  .item-no { grid-area: no; }
  .item > .glyph { grid-area: glyph; max-width: 112px; margin-bottom: var(--space-2); }
  .item > .item-body { grid-area: body; }
  @media (min-width: 900px) {
    .item { grid-template-columns: 56px 1fr 168px; grid-template-areas: "no body glyph"; gap: var(--space-6); }
    .item > .glyph { max-width: 168px; margin: var(--space-1) 0 0; }
  }

  /* section rule draws across like a dimension line */
  .section-head { position: relative; border-bottom-color: transparent; }
  .section-head::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 3px;
    border-top: 1px solid var(--border-strong); border-bottom: 1px solid var(--border-strong);
    transform: scaleX(0); transform-origin: left center;
    transition: transform var(--motion-draw) var(--ease-draw);
  }
  .section-head.is-drawn::after { transform: scaleX(1); }

  /* ══════════════════ front page components ══════════════════ */

  /* sections that host injected structural canvases */
  .stage { position: relative; overflow: hidden; }
  .stage > .wrap { position: relative; z-index: 1; }
  .section-head .section-title em, .hero h1 em { font-style: italic; font-weight: 700; }

  /* ── hero: the front page ── */
  .hero { display: grid; border-bottom: var(--rule-double); }
  @media (min-width: 900px) { .hero { grid-template-columns: 1.15fr 1fr; } }
  .hero-left {
    position: relative; overflow: hidden;
    padding: var(--space-7) var(--gutter) var(--space-9);
  }
  .hero-left > * { position: relative; z-index: 1; }
  /* type knocked out of the bridge drawing behind it, as print sets type over an image */
  .hero-left h1, .hero-left .eyebrow, .hero-left .hero-name-sub, .hero-left .hero-desc {
    text-shadow: 0 0 2px var(--surface-primary), 0 0 6px var(--surface-primary), 0 0 12px var(--surface-primary);
  }
  .hero-left > canvas { position: absolute; z-index: 0; }
  .hero h1 { margin: var(--space-4) 0 var(--space-3); }
  .hero-name-sub { margin-bottom: var(--space-5); }
  .hero-desc { font: 400 17px/1.6 var(--font-text); color: var(--text-secondary); max-width: 56ch; margin: 0 0 var(--space-7); }
  @media (min-width: 600px) { .hero-desc { font-size: 18px; } }
  .hero-tags { margin-bottom: var(--space-6); }
  .hero-tags .tag.is-core { background: var(--brand-primary); color: var(--text-inverse); }
  .hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); }
  .hero-right { position: relative; overflow: hidden; min-height: 300px; border-top: var(--rule-hair); }
  @media (min-width: 900px) { .hero-right { min-height: 480px; border-top: 0; border-left: var(--rule-hair); } }
  #gantryMount { position: absolute; inset: 0; }
  #gantryMount canvas { display: block; width: 100%; height: 100%; }

  /* ── two-column editorial layout ── */
  .two-col { display: grid; gap: var(--space-7); }
  @media (min-width: 900px) { .two-col { grid-template-columns: 1.3fr 1fr; gap: var(--space-8); } }
  .body-copy p { font: 400 16px/1.7 var(--font-text); color: var(--text-primary); }
  .body-copy strong { font-weight: 600; }

  /* ── credentials ── */
  .creds { list-style: none; margin: 0 0 var(--space-6); padding: 0; border-top: var(--rule-strong); }
  .creds li { display: grid; grid-template-columns: 48px 1fr; gap: var(--space-3); padding: var(--space-3) 0; border-bottom: var(--rule-hair); }
  .cred-icon { font: 600 10px/1.8 var(--font-mono); letter-spacing: 0.1em; color: var(--text-muted); }
  .cred-title { font: 600 15px/1.35 var(--font-text); }
  .cred-sub { font: 400 12px/1.45 var(--font-mono); color: var(--text-secondary); margin-top: var(--space-1); }

  /* ── languages ── */
  .langs h4 { margin-bottom: var(--space-3); }
  .lang-row { display: grid; grid-template-columns: 88px 1fr 96px; align-items: center; gap: var(--space-3); padding: var(--space-2) 0; }
  .lang-name { font: 500 13px/1.3 var(--font-text); }
  .lang-bar { height: 4px; background: var(--border-faint); }
  .lang-fill { height: 100%; background: var(--text-primary); }
  .lang-level { font: 400 11px/1 var(--font-mono); color: var(--text-muted); text-align: right; }

  /* ── research ── */
  .research-featured { display: grid; gap: var(--space-6); margin-bottom: var(--space-8); }
  @media (min-width: 900px) { .research-featured { grid-template-columns: 1.1fr 1fr; gap: var(--space-7); align-items: start; } }

  /* a results viewport: the one dark plate on the page, like a figure printed from the solver */
  .viewport {
    position: relative; overflow: hidden; width: 100%; aspect-ratio: 4 / 3; min-height: 280px;
    background: var(--viewport-bg); color: var(--viewport-text);
    border: var(--rule-strong); box-shadow: var(--shadow-1);
  }
  #impactMount { position: absolute; inset: 0; }
  #impactMount canvas { display: block; width: 100%; height: 100%; }
  .odb-legend { position: absolute; top: var(--space-3); left: var(--space-3); width: 96px; font: 400 9px/1.3 var(--font-mono); }
  .odb-title { margin-bottom: var(--space-1); font-weight: 600; }
  .odb-title span { font-weight: 400; opacity: 0.8; }
  .odb-bar { display: flex; flex-direction: column; width: 16px; height: 120px; }
  .odb-bar i { flex: 1; }
  .odb-bar i:nth-child(1)  { background: var(--spectrum-1); }  .odb-bar i:nth-child(2)  { background: var(--spectrum-2); }
  .odb-bar i:nth-child(3)  { background: var(--spectrum-3); }  .odb-bar i:nth-child(4)  { background: var(--spectrum-4); }
  .odb-bar i:nth-child(5)  { background: var(--spectrum-5); }  .odb-bar i:nth-child(6)  { background: var(--spectrum-6); }
  .odb-bar i:nth-child(7)  { background: var(--spectrum-7); }  .odb-bar i:nth-child(8)  { background: var(--spectrum-8); }
  .odb-bar i:nth-child(9)  { background: var(--spectrum-9); }  .odb-bar i:nth-child(10) { background: var(--spectrum-10); }
  .odb-bar i:nth-child(11) { background: var(--spectrum-11); } .odb-bar i:nth-child(12) { background: var(--spectrum-12); }
  .odb-ticks { position: absolute; left: 24px; top: 24px; height: 120px; display: flex; flex-direction: column; justify-content: space-between; }
  .odb-triad { position: absolute; left: var(--space-3); bottom: 48px; width: 44px; height: 44px; }
  .odb-triad .ax-x { stroke: var(--axis-x); } .odb-triad .ax-y { stroke: var(--axis-y); } .odb-triad .ax-z { stroke: var(--axis-z); }
  .odb-triad text { fill: var(--viewport-text); font: 400 7px var(--font-mono); }
  .odb-footer {
    position: absolute; left: 0; right: 0; bottom: 0; padding: var(--space-2) var(--space-3);
    font: 400 9px/1.5 var(--font-mono); background: rgba(11, 13, 18, 0.72);
  }
  @media (max-width: 599.98px) { .odb-ticks, .odb-triad { display: none; } .odb-footer { font-size: 8px; } }

  .research-tag { margin-bottom: var(--space-3); }
  .research-content h3 { margin-bottom: var(--space-4); }
  .methods { list-style: none; margin: var(--space-4) 0 var(--space-5); padding: 0; border-top: var(--rule-hair); }
  .methods li { padding: var(--space-2) 0 var(--space-2) var(--space-5); border-bottom: var(--rule-hair); position: relative; font: 400 14px/1.5 var(--font-text); }
  .methods li::before { content: ""; position: absolute; left: 0; top: 16px; width: 12px; height: 1px; background: var(--text-primary); }
  .status-line { display: flex; align-items: center; gap: var(--space-3); }
  .dot-pulse { width: 8px; height: 8px; background: var(--brand-secondary); animation: pulse 2.4s var(--ease-draw) infinite; }
  @keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

  /* ── postgraduate modules ── */
  .modules-head { margin-bottom: var(--space-1); }
  .modules-note { font: italic 400 14px/1.5 var(--font-text); color: var(--text-secondary); margin: 0 0 var(--space-5); }
  .indep-grid { display: grid; gap: 1px; background: var(--border-subtle); border: var(--rule-hair); }
  @media (min-width: 600px) { .indep-grid { grid-template-columns: 1fr 1fr; } }
  @media (min-width: 1200px) { .indep-grid { grid-template-columns: repeat(3, 1fr); } }
  .indep-card { position: relative; overflow: hidden; background: var(--surface-primary); padding: var(--space-5); }
  .indep-card > * { position: relative; z-index: 1; }
  .indep-card > canvas { position: absolute; z-index: 0; }
  .indep-num { font: 500 12px/1 var(--font-mono); color: var(--text-muted); margin-bottom: var(--space-3); }
  .indep-card h4 { margin-bottom: var(--space-3); padding-right: 64px; }
  .indep-card p { font: 400 14px/1.6 var(--font-text); color: var(--text-secondary); }
  .indep-tools { display: flex; flex-wrap: wrap; gap: var(--space-2); }
  .mod-art { position: absolute; top: var(--space-4); right: var(--space-4); width: 48px; height: 48px; }
  .mod-art .ln { fill: none; stroke: var(--text-primary); stroke-width: 1.2; }
  .mod-art .yl, .mod-art .m1, .mod-art .bk, .mod-art .pb { stroke: var(--brand-secondary); }
  .mod-art .dg, .mod-art .ax, .mod-art .hatch, .mod-art .m2 { stroke: var(--text-muted); }
  .mod-art .rf { stroke: var(--text-secondary); stroke-dasharray: 2 2; }
  .mod-art .fl { fill: var(--text-primary); }
  .mod-art .fl-soft { fill: var(--border-faint); }
  @media (min-width: 600px) { .mod-art { width: 56px; height: 56px; } }

  /* ── selected projects on the front page ── */
  .more-link { margin-top: var(--space-5); }

  /* ── technical capability ── */
  #beam-canvas { display: block; width: 100%; height: 88px; margin-bottom: var(--space-6); }
  .codes-strip { display: grid; gap: 1px; background: var(--border-subtle); border: var(--rule-hair); margin-bottom: var(--space-7); }
  @media (min-width: 900px) { .codes-strip { grid-template-columns: repeat(3, 1fr); } }
  .code-card { background: var(--surface-primary); padding: var(--space-5); }
  .code-card .cf { font: 900 28px/1 var(--font-display); }
  .code-card .cr { font: 400 12px/1.45 var(--font-mono); color: var(--text-secondary); margin: var(--space-2) 0 var(--space-4); }
  .code-card .cl { font: 500 10px/1 var(--font-mono); letter-spacing: 0.16em; color: var(--text-muted); margin-bottom: var(--space-2); }
  .code-card .cb { height: 4px; background: var(--border-faint); margin-bottom: var(--space-4); }
  .code-card .cb i { display: block; height: 100%; width: 0; background: var(--text-primary); transition: width 1200ms var(--ease-draw); }
  .code-card ul { margin: 0; padding: 0 0 0 var(--space-4); font: 400 13px/1.6 var(--font-text); }

  .skills-layout { display: grid; gap: var(--space-7); }
  @media (min-width: 900px) { .skills-layout { grid-template-columns: 1fr 1fr; gap: var(--space-8); } }
  .skill-category { margin-bottom: var(--space-7); }
  .skill-cat-title {
    font: 600 11px/1 var(--font-mono); letter-spacing: 0.16em; text-transform: uppercase;
    padding-bottom: var(--space-2); border-bottom: var(--rule-strong); margin-bottom: var(--space-2);
  }
  .skill-scale { display: flex; justify-content: space-between; font: 400 10px/1 var(--font-mono); color: var(--text-muted); margin-bottom: var(--space-3); }
  .skill-item { display: grid; grid-template-columns: 1fr auto; gap: var(--space-4); align-items: end; padding: var(--space-3) 0; border-bottom: var(--rule-hair); }
  .skill-name { font: 600 15px/1.3 var(--font-text); }
  .skill-detail { font: 400 12px/1.45 var(--font-mono); color: var(--text-secondary); margin: var(--space-1) 0 var(--space-2); }
  .skill-track { height: 4px; background: var(--border-faint); }
  .skill-fill { height: 100%; background: var(--text-primary); transition: width 1200ms var(--ease-draw); }
  .skill-fill.steel { background: var(--text-secondary); }
  .skill-fill.both { background: linear-gradient(90deg, var(--text-primary), var(--text-secondary)); }
  .skill-label { font: 500 10px/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); white-space: nowrap; }
  .skill-label.is-active { color: var(--success); }
  .codes-grid { display: grid; gap: var(--space-2) var(--space-5); padding-top: var(--space-2); }
  @media (min-width: 600px) { .codes-grid { grid-template-columns: 1fr 1fr; } }
  .code-item { display: flex; align-items: center; gap: var(--space-2); font: 400 13px/1.4 var(--font-text); }
  .code-dot { width: 6px; height: 6px; background: var(--text-primary); flex: 0 0 auto; }
  .vision-block { border-left: 3px solid var(--brand-secondary); padding: var(--space-4) var(--space-5); background: var(--surface-secondary); }
  .vision-block h4 { margin-bottom: var(--space-2); }
  .vision-block p { font: italic 400 15px/1.6 var(--font-text); margin: 0; }

  /* ── experience timeline ── */
  .timeline { position: relative; list-style: none; padding: 0; border-left: var(--rule-strong); margin: 0 0 0 var(--space-1); }
  .timeline-item { position: relative; padding: 0 0 var(--space-7) var(--space-6); }
  .timeline-dot {
    position: absolute; left: -5px; top: 4px; width: 9px; height: 9px;
    background: var(--surface-primary); border: var(--rule-strong);
  }
  .timeline-dot.current { background: var(--brand-secondary); border-color: var(--brand-secondary); }
  .tl-period { margin-bottom: var(--space-2); }
  .tl-title { font: 700 20px/1.2 var(--font-display); margin-bottom: var(--space-1); }
  .tl-company { font: 500 13px/1.4 var(--font-mono); color: var(--text-secondary); margin-bottom: var(--space-3); }
  .tl-body { font: 400 15px/1.65 var(--font-text); max-width: 72ch; }
  .tl-highlights { display: flex; flex-wrap: wrap; gap: var(--space-2); }

  /* ── contact ── */
  /* the response-spectrum study was drawn for a dark section; on paper it sits back as a watermark */
  #contact > canvas { opacity: 0.3; }
  .contact-grid { display: grid; gap: var(--space-7); }
  @media (min-width: 900px) { .contact-grid { grid-template-columns: 1fr 1fr; gap: var(--space-8); } }
  .contact-statement { font: 400 18px/1.6 var(--font-text); }
  .contact-statement + .contact-statement { font-size: 15px; color: var(--text-secondary); }
  .availability { margin-bottom: var(--space-6); }
  .availability h4 { margin-bottom: var(--space-3); }
  .avail-item { display: grid; grid-template-columns: 16px 1fr; gap: var(--space-3); padding: var(--space-2) 0; font: 400 15px/1.5 var(--font-text); }
  .avail-dot { width: 8px; height: 8px; margin-top: 8px; }
  .avail-dot.open { background: var(--success); }
  .avail-dot.selective { background: var(--brand-secondary); }
  .avail-dot.future { background: var(--info); }
  .contact-links { border-top: var(--rule-strong); }
  .contact-link {
    display: grid; grid-template-columns: 88px 1fr auto; align-items: center; gap: var(--space-3);
    min-height: 56px; padding: var(--space-3) 0; border-bottom: var(--rule-hair);
    text-decoration: none; color: var(--text-primary);
  }
  .contact-link:hover .cl-value { text-decoration: underline; text-underline-offset: 4px; }
  .cl-type { font: 500 10px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); }
  .cl-value { font: 500 15px/1.35 var(--font-text); word-break: break-word; }
  .cl-arrow { font: 400 16px/1 var(--font-mono); }

  .footer-quote { font: italic 400 14px/1.5 var(--font-text); color: var(--text-secondary); max-width: 56ch; margin: 0; }
  .footer-quote cite { display: block; font: 500 11px/1 var(--font-mono); font-style: normal; letter-spacing: 0.12em; text-transform: uppercase; margin-top: var(--space-2); }

  /* ── footer ── */
  .footer { background: var(--surface-secondary); border-top: var(--rule-strong); }
  .footer .wrap { padding-block: var(--space-6); display: grid; gap: var(--space-5); }
  @media (min-width: 900px) { .footer .wrap { grid-template-columns: 1fr auto; align-items: end; } }
  .footer p { font: 400 12px/1.5 var(--font-mono); color: var(--text-secondary); margin: 0; }
}

/* ────────────────────────────── utilities ───────────────────────────── */
@layer utilities {
  .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; }
  .mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
  .stack > * + * { margin-top: var(--space-4); }
}