/* ==========================================================================
   Grid — modernist
   2px rules · flush left · zero radius · green accent
   All hairlines are grid gaps: a grid parent painted in --rule, children in
   --paper. Change --rule-w once and the whole system re-rules itself.
   ========================================================================== */

/* --------------------------------------------------------------- tokens -- */
:root {
  --paper:        #F4F3EE;
  --paper-2:      #EDECE5;
  --ink:          #191A15;
  --muted:        #6E6E63;
  --rule:         #191A15;
  --accent:       #2E5B3E;
  --accent-ink:   #F4F3EE;
  --hatch:        rgba(25, 26, 21, .12);
  --hatch-bg:     #E6E5DE;

  --rule-w:       2px;
  --pad:          24px;
  --pad-lg:       40px;
  --max:          1240px;

  --sans: "Helvetica Neue", Helvetica, "Segoe UI", Inter, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(.2, .7, .3, 1);
}

[data-theme="dark"] {
  --paper:        #131410;
  --paper-2:      #1A1B16;
  --ink:          #EDECE3;
  --muted:        #8B8C7E;
  --rule:         #35362C;
  --accent:       #79B187;
  --accent-ink:   #10110C;
  --hatch:        rgba(237, 236, 227, .10);
  --hatch-bg:     #1C1D17;
}

/* --------------------------------------------------------------- reset --- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper-2);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4, p, ul, ol, figure, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }

:focus-visible {
  outline: var(--rule-w) solid var(--accent);
  outline-offset: 2px;
}

::selection { background: var(--accent); color: var(--accent-ink); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  background: var(--ink); color: var(--paper);
  padding: 10px 16px; font: 600 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
}
.skip-link:focus { left: 8px; top: 8px; }

.noscript {
  margin: 16px; padding: 16px;
  border: var(--rule-w) solid var(--rule);
  font: 13px/1.6 var(--mono);
}

/* ---------------------------------------------------------------- shell -- */
.page {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 20px 56px;
}

/* The frame paints the rules; every cell paints itself back in paper. */
.frame,
.rows,
.cols {
  display: grid;
  gap: var(--rule-w);
  background: var(--rule);
}
.frame { border: var(--rule-w) solid var(--rule); }

.cell { background: var(--paper); min-width: 0; }
.pad  { padding: var(--pad); }
.pad-lg { padding: var(--pad-lg); }

/* --------------------------------------------------------------- typo ---- */
.mono {
  font: 500 10px/1.4 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.mono--ink { color: var(--ink); }
.mono--accent { color: var(--accent); }

.display {
  font-weight: 900;
  letter-spacing: -.035em;
  line-height: .92;
  text-transform: uppercase;
  font-size: clamp(38px, 7.4vw, 86px);
}

.h2 {
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.05;
  font-size: clamp(24px, 3.2vw, 38px);
  text-transform: uppercase;
}

.h3 { font-size: 17px; font-weight: 700; letter-spacing: -.01em; line-height: 1.25; }

.lede { font-size: 15.5px; color: var(--muted); max-width: 46ch; }
.prose p + p { margin-top: 12px; }
.prose { color: var(--muted); font-size: 14.5px; max-width: 62ch; }
.prose strong { color: var(--ink); font-weight: 600; }

/* -------------------------------------------------------------- header --- */
.masthead {
  position: sticky; top: 0; z-index: 20;
  background: var(--paper);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px var(--pad);
  border-bottom: var(--rule-w) solid var(--rule);
  margin-bottom: calc(var(--rule-w) * -1); /* rule doubles as the grid gap */
}

.wordmark {
  font-weight: 800; font-size: 14px; letter-spacing: .02em; text-transform: uppercase;
  white-space: nowrap;
}

.nav { display: flex; align-items: center; gap: 22px; }
.nav a {
  font: 500 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  padding: 4px 0; border-bottom: var(--rule-w) solid transparent;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.nav a:hover { color: var(--accent); }
.nav a[aria-current="true"] { border-bottom-color: var(--accent); color: var(--ink); }

.theme-toggle {
  background: none; border: var(--rule-w) solid var(--rule);
  padding: 5px 9px; cursor: pointer;
  font: 500 10px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  transition: background .18s var(--ease), color .18s var(--ease);
}
.theme-toggle:hover { background: var(--ink); color: var(--paper); }

.nav-toggle { display: none; }

/* ---------------------------------------------------------------- hero --- */
.hero { grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); }

.hero__body { display: flex; flex-direction: column; gap: 22px; padding: var(--pad-lg); }
.hero__title { margin-top: 6px; }

.btn-group { display: inline-flex; border: var(--rule-w) solid var(--rule); width: fit-content; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 18px; cursor: pointer; background: var(--paper); border: 0;
  font: 600 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  transition: background .18s var(--ease), color .18s var(--ease);
}
.btn + .btn { border-left: var(--rule-w) solid var(--rule); }
.btn--primary { background: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: var(--ink); color: var(--paper); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); }

/* ------------------------------------------------------ image placeholder */
.ph {
  position: relative;
  background-color: var(--hatch-bg);
  background-image: repeating-linear-gradient(45deg,
    transparent 0 7px, var(--hatch) 7px 14px);
  overflow: hidden;
}
.ph > img { width: 100%; height: 100%; object-fit: cover; }
.ph__caption {
  position: absolute; left: 8px; bottom: 6px;
  font: 500 9px/1 var(--mono); letter-spacing: .14em; text-transform: lowercase;
  color: var(--muted);
}
.ph--portrait { min-height: 300px; height: 100%; }

/* --------------------------------------------------------------- stats --- */
.stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stat { padding: 18px var(--pad); }
.stat__value {
  font-weight: 900; font-size: clamp(22px, 3vw, 32px);
  letter-spacing: -.03em; line-height: 1; margin-top: 8px;
}

/* --------------------------------------------------------- section bar --- */
.bar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 11px var(--pad); flex-wrap: wrap;
}
.filters { display: flex; gap: 4px; flex-wrap: wrap; }
.filter {
  background: none; border: var(--rule-w) solid transparent; cursor: pointer;
  padding: 4px 8px;
  font: 500 10px/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted);
  transition: color .16s var(--ease), border-color .16s var(--ease);
}
.filter:hover { color: var(--ink); }
.filter[aria-pressed="true"] { color: var(--ink); border-color: var(--rule); }

/* ---------------------------------------------------------------- work --- */
.work-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  display: flex; flex-direction: column; text-align: left;
  background: var(--paper); border: 0; padding: 0; cursor: pointer;
  transition: background .18s var(--ease);
}
.card:hover { background: var(--paper-2); }
.card:hover .card__title { color: var(--accent); }
.card__media { aspect-ratio: 4 / 3; }
.card__body { padding: 12px 14px 16px; display: flex; flex-direction: column; gap: 5px; }
.card__num { color: var(--muted); }
.card__title { font-size: 14.5px; font-weight: 700; letter-spacing: -.01em; line-height: 1.25; transition: color .18s var(--ease); }
.card__meta { color: var(--accent); }
.card[aria-expanded="true"] { background: var(--paper-2); }
.card[aria-expanded="true"] .card__title { color: var(--accent); }

/* -------------------------------------------------- in-place case study -- */
.detail {
  grid-column: 1 / -1;
  background: var(--paper);
  overflow: hidden;
}
.detail__inner { border-top: var(--rule-w) solid var(--rule); }

.detail__head {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px var(--pad);
  background: var(--accent); color: var(--accent-ink);
  border-bottom: var(--rule-w) solid var(--rule);
}
.detail__head .mono { color: var(--accent-ink); }
.detail__close {
  background: none; border: var(--rule-w) solid currentColor; cursor: pointer;
  padding: 4px 8px; color: inherit;
  font: 600 10px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  transition: background .16s var(--ease), color .16s var(--ease);
}
.detail__close:hover { background: var(--accent-ink); color: var(--accent); }

.detail__cols { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: var(--rule-w); background: var(--rule); }
.detail__main, .detail__side { background: var(--paper); padding: var(--pad-lg) var(--pad); }
.detail__side { display: flex; flex-direction: column; gap: 22px; }

.block + .block { margin-top: 26px; }
.block__label { padding-bottom: 8px; margin-bottom: 10px; border-bottom: var(--rule-w) solid var(--rule); }

.steps { counter-reset: step; display: grid; gap: 10px; }
.steps li {
  counter-increment: step; position: relative; padding-left: 34px;
  font-size: 14.5px; color: var(--muted);
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 2px;
  font: 500 10px/1.4 var(--mono); letter-spacing: .12em; color: var(--accent);
}

.ticks { display: grid; gap: 8px; }
.ticks li { position: relative; padding-left: 20px; font-size: 14.5px; color: var(--muted); }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 10px; height: var(--rule-w); background: var(--accent);
}

.spec { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; }
.spec dt { font: 500 10px/1.6 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.spec dd { font-size: 14px; }

.metrics { display: grid; gap: var(--rule-w); background: var(--rule); border: var(--rule-w) solid var(--rule); grid-template-columns: repeat(3, minmax(0, 1fr)); }
.metric { background: var(--paper); padding: 12px; }
.metric__value { font-weight: 900; font-size: 22px; letter-spacing: -.03em; line-height: 1.1; color: var(--accent); }
.metric__label { margin-top: 4px; }

.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--rule-w); background: var(--rule); border-top: var(--rule-w) solid var(--rule); }
.gallery .ph { aspect-ratio: 4 / 3; }

.link-out {
  display: inline-flex; align-items: center; gap: 8px; width: fit-content;
  border-bottom: var(--rule-w) solid var(--accent); padding-bottom: 3px; color: var(--accent);
  font: 600 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
}
.link-out:hover { color: var(--ink); border-color: var(--ink); }

/* --------------------------------------------------------------- about --- */
.about { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.about > * { padding: var(--pad-lg) var(--pad); }

.xp { margin-top: 14px; }
.xp li { padding: 13px 0; border-bottom: var(--rule-w) solid var(--rule); display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.xp li:last-child { border-bottom: 0; padding-bottom: 0; }
.xp__role { font-size: 14.5px; }
.xp__org { color: var(--accent); font-weight: 700; }
.xp__year { white-space: nowrap; }

.tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 16px; }
.tag {
  border: var(--rule-w) solid var(--rule); padding: 4px 8px;
  font: 500 10px/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase;
}

/* ----------------------------------------------------------------- cta --- */
.cta {
  background: var(--accent); color: var(--accent-ink);
  padding: clamp(36px, 6vw, 64px) var(--pad);
  display: flex; flex-direction: column; gap: 22px;
}
.cta .mono { color: var(--accent-ink); opacity: .75; }
.cta__links { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.cta__links a {
  font: 600 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  border-bottom: var(--rule-w) solid transparent; padding-bottom: 3px;
}
.cta__links a:hover { border-bottom-color: currentColor; }

/* -------------------------------------------------------------- footer --- */
.colophon {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px var(--pad); flex-wrap: wrap;
}
.colophon a:hover { color: var(--accent); }

/* ------------------------------------------------------------- motion ---- */
.detail { transition: height .32s var(--ease); }
.detail[data-animating="true"] { will-change: height; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* --------------------------------------------------------- responsive ---- */
@media (max-width: 1000px) {
  .work-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  :root { --pad: 18px; --pad-lg: 26px; }
  .page { padding: 12px 12px 36px; }

  .hero,
  .about,
  .detail__cols { grid-template-columns: minmax(0, 1fr); }
  .ph--portrait { min-height: 220px; }

  .masthead { flex-wrap: wrap; }
  .nav-toggle {
    display: inline-flex; background: none; cursor: pointer;
    border: var(--rule-w) solid var(--rule); padding: 5px 9px;
    font: 500 10px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  }
  .nav {
    order: 3; width: 100%; display: none; flex-direction: column; align-items: flex-start; gap: 0;
    border-top: var(--rule-w) solid var(--rule); margin-top: 12px; padding-top: 4px;
  }
  .nav[data-open="true"] { display: flex; }
  .nav a { width: 100%; padding: 11px 0; border-bottom: var(--rule-w) solid var(--rule); }
  .nav a[aria-current="true"] { color: var(--accent); }

  .gallery { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 520px) {
  .work-grid { grid-template-columns: minmax(0, 1fr); }
  .stats { grid-template-columns: minmax(0, 1fr); }
  .metrics { grid-template-columns: minmax(0, 1fr); }
  .btn-group { width: 100%; }
  .btn { flex: 1; justify-content: center; }
}

/* ---------------------------------------------------------------- print -- */
@media print {
  .masthead, .theme-toggle, .filters, .btn-group { display: none; }
  .page { padding: 0; }
  .frame { border-width: 1px; }
  .detail { height: auto !important; }
}