/* ==========================================================
   Test Port — shared design tokens + typography
   ========================================================== */

:root {
  /* warm light palette */
  --bg:          #F6F1EA;
  --bg-elev:     #EFE8DB;
  --bg-sunk:    #EDE5D4;
  --ink:         #2B2622;
  --ink-2:      #3E3630;
  --ink-mute:    #6B6257;
  --ink-dim:    #8F8578;
  --rule:        #E4DCCD;
  --rule-strong: #D0C4B0;
  --accent:      #B8873A;
  --accent-ink:  #8C651F;
  --accent-wash: #F0E3CB;

  /* type */
  --font-display: 'Fraunces', 'Iowan Old Style', Georgia, serif;
  --font-serif:   'Source Serif 4', 'Iowan Old Style', Georgia, serif;
  --font-sans:    'Inter Tight', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;

  --t-xs: 12px;
  --t-sm: 14px;
  --t-base: 19px;
  --t-md: 20px;
  --t-lg: 26px;
  --t-xl: 34px;
  --t-2xl: 48px;
  --t-3xl: 64px;
  --t-4xl: 84px;

  --shell: 720px;          /* main reading measure */
  --shell-wide: 920px;
  --pad-x: 32px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--t-base);
  line-height: 1.6;
  font-weight: 380;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

a { color: inherit; }

.shell { max-width: var(--shell); margin: 0 auto; padding: 0 var(--pad-x); }
.shell-wide { max-width: var(--shell-wide); margin: 0 auto; padding: 0 var(--pad-x); }

/* ---------- top nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 180ms ease;
}
.nav.is-stuck { border-bottom-color: var(--rule); }
.nav-inner {
  max-width: var(--shell-wide);
  margin: 0 auto;
  padding: 18px var(--pad-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-sans);
  font-size: var(--t-sm);
}
.nav .brand {
  display: inline-flex; align-items: baseline; gap: 10px;
  text-decoration: none; color: var(--ink);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 18px;
  letter-spacing: -0.012em;
}
.nav .brand .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 22%, transparent);
  align-self: center;
}
.nav .brand small {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--ink-dim);
  text-transform: uppercase;
  margin-left: 2px;
}
.nav .links { display: flex; gap: 26px; align-items: center; }
.nav .links a {
  color: var(--ink-mute);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: -0.003em;
  padding: 4px 0;
  position: relative;
  transition: color 120ms ease;
}
.nav .links a:hover { color: var(--ink); }
.nav .links a.is-current { color: var(--ink); }
.nav .links a.is-current::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--accent);
}

/* ---------- hero ---------- */
.hero {
  padding: 108px var(--pad-x) 88px;
}
.hero .ribbon {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 36px;
  display: inline-flex; align-items: center; gap: 10px;
}
.hero .ribbon .pulse {
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent) 20%, transparent);
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 420;
  font-size: var(--t-3xl);
  line-height: 1.2;
  letter-spacing: -0.022em;
  margin: 0;
  max-width: 22ch;
  color: var(--ink);
  text-wrap: balance;
  font-variation-settings: "opsz" 144, "SOFT" 30;
}
.hero h1 em {
  font-style: italic;
  color: var(--ink);
  font-weight: 420;
}
.hero h1 .mute { color: var(--ink-mute); }
.hero .lede {
  margin: 64px 0 0;
  font-size: var(--t-md);
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 58ch;
}
.hero .lede + .lede { margin-top: 14px; color: var(--ink-mute); }

/* ---------- section heads ---------- */
.section {
  padding: 72px var(--pad-x);
  border-top: 1px solid var(--rule);
}
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  margin-bottom: 32px;
}
.section-head .label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.section-head .meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}
.section h2 {
  font-family: var(--font-display);
  font-weight: 420;
  font-size: var(--t-xl);
  line-height: 1.15;
  letter-spacing: -0.018em;
  margin: 0 0 24px;
  max-width: 22ch;
}
.section p {
  font-size: var(--t-base);
  line-height: 1.65;
  margin: 0 0 18px;
}
.section p.lede {
  font-size: var(--t-md);
  color: var(--ink-2);
}

/* ---------- work list ---------- */
.work-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.work-list li { border-bottom: 1px solid var(--rule); }
.work-list a {
  display: grid;
  grid-template-columns: 28px 128px 1fr 160px 64px;
  gap: 28px;
  align-items: center;
  padding: 22px 4px;
  color: var(--ink);
  text-decoration: none;
  position: relative;
  transition: padding 240ms ease, background 200ms ease;
}
.work-list a:hover { padding-left: 22px; background: linear-gradient(90deg, color-mix(in oklab, var(--accent) 6%, transparent), transparent 40%); }
.work-list .thumb {
  width: 128px; height: 88px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
  transition: border-color 200ms ease, transform 260ms cubic-bezier(.2,.8,.2,1);
}
.work-list .thumb svg,
.work-list .thumb img { display: block; width: 100%; height: 100%; object-fit: cover; }
.work-list a:hover .thumb { border-color: var(--rule-strong); transform: translateY(-1px); }
.work-list .n {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  padding-top: 6px;
}
.work-list .title-wrap { min-width: 0; }
.work-list .title {
  font-family: var(--font-display);
  font-size: var(--t-lg);
  font-weight: 420;
  letter-spacing: -0.012em;
  line-height: 1.2;
  display: inline-flex; align-items: baseline; gap: 12px;
}
.work-list .title .arrow {
  color: var(--accent);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 18px;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 180ms ease, transform 220ms ease;
}
.work-list a:hover .title .arrow { opacity: 1; transform: translateX(0); }
.work-list .desc {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--ink-mute);
  margin-top: 4px;
  line-height: 1.5;
  max-width: 52ch;
}
.work-list .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding-top: 6px;
}
.work-list .year {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  padding-top: 6px;
  text-align: right;
}

/* shortform projects */
.shortform-project p { max-width: none; }
.shortform-project {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--rule);
}
.shortform-project:first-of-type {
  margin-top: 32px;
  padding-top: 0;
  border-top: none;
}
.shortform-title {
  font-family: var(--font-display);
  font-weight: 420;
  font-size: var(--t-lg);
  letter-spacing: -0.014em;
  color: var(--ink);
  margin: 0 0 20px;
  font-style: italic;
}

/* skills inline */
.inline-list {
  list-style: none; margin: 22px 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 6px 28px;
  font-family: var(--font-sans); font-size: 14px;
  color: var(--ink-mute);
}
.inline-list li { position: relative; padding-left: 16px; }
.inline-list li::before {
  content: '';
  position: absolute; left: 0; top: 0.6em;
  width: 6px; height: 1px; background: var(--accent);
}

/* contact */
.contact-email {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 420;
  font-size: var(--t-xl);
  letter-spacing: -0.015em;
  color: var(--ink);
  text-decoration: none;
  line-height: 1.1;
  padding: 6px 0;
  border-bottom: 1px solid var(--rule-strong);
  transition: color 160ms ease, border-color 160ms ease;
}
.contact-email:hover { color: var(--accent-ink); border-color: var(--accent); }
.contact-email .arrow { color: var(--accent); font-family: var(--font-sans); font-style: normal; margin-left: 8px; font-size: var(--t-lg); vertical-align: 2px; }
.social {
  margin: 24px 0 0; padding: 0; list-style: none;
  display: flex; flex-wrap: wrap; gap: 8px 18px;
  font-family: var(--font-sans); font-size: 14px;
}
.social a {
  color: var(--ink-mute);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding: 4px 0;
  transition: color 140ms ease, border-color 140ms ease;
}
.social a:hover { color: var(--ink); border-color: var(--accent); }
.social .cv-download span { color: var(--accent); }

/* footer */
.foot {
  padding: 44px 0 56px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-sans);
  font-size: var(--t-xs);
  color: var(--ink-dim);
  letter-spacing: 0.02em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.foot .left { display: flex; align-items: center; gap: 12px; }
.foot .sig {
  width: 26px; height: 26px;
  border: 1px solid var(--rule-strong);
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: -0.04em;
}
.foot .colophon {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  color: var(--ink-mute);
}
.foot .right { display: flex; align-items: center; gap: 18px; }
.clock { font-family: var(--font-mono); font-feature-settings: 'tnum'; font-size: 11px; letter-spacing: 0.04em; color: var(--ink-mute); }
.clock .dot { display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); margin-right: 7px; vertical-align: 1px; }


/* ==========================================================
   CASE STUDY PAGE
   ========================================================== */
.shell-cs { max-width: 980px; margin: 0 auto; padding: 0 var(--pad-x); }
.shell-cs-narrow { max-width: 680px; margin: 0 auto; padding: 0 var(--pad-x); }

/* featured visual block under hero */
.cs-feature {
  margin: 40px 0 0 calc(72px + 36px);
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}
.cs-feature svg,
.cs-feature img { display: block; width: 100%; height: auto; }
.cs-feature .caption {
  position: absolute;
  left: 20px; bottom: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  padding: 6px 10px;
  border-radius: 2px;
}

/* exhibit — a figure between text sections */
.exhibit {
  margin: 28px 0 8px;
  border: 1px solid var(--rule);
  background: var(--bg-elev);
  border-radius: 4px;
  overflow: hidden;
}
.exhibit .exhibit-body { position: relative; max-height: 640px; overflow: hidden; }
.exhibit .exhibit-body svg,
.exhibit .exhibit-body img { display: block; width: 100%; height: auto; }
.exhibit .exhibit-foot {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 16px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  text-transform: uppercase;
  background: var(--bg);
}
.exhibit .exhibit-foot .label { color: var(--ink-mute); }

/* two-up before/after */
.ba {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 28px 0 8px;
}
.ba .panel {
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}
.ba .panel .body { aspect-ratio: 4 / 3; position: relative; }
.ba .panel svg,
.ba .panel img { display: block; width: 100%; height: 100%; object-fit: cover; }
.ba .panel .cap {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--bg);
}
.ba .panel .cap strong { color: var(--ink); font-weight: 500; }

/* gallery strip */
.cs-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 32px 0 0;
}
.cs-gallery .tile {
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--bg-elev);
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
}
.cs-gallery .tile svg { display: block; width: 100%; height: 100%; }
.cs-gallery .tile img { display: block; width: 100%; height: 100%; object-fit: cover; }
.cs-gallery .tile .lbl {
  position: absolute; left: 10px; bottom: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  padding: 3px 6px;
  border-radius: 2px;
}

.cs-top { padding: 32px 0 0; }
.cs-back {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-mute);
  text-decoration: none;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 0;
  transition: color 120ms ease;
}
.cs-back:hover { color: var(--ink); }
.cs-back .arrow { color: var(--accent); }

.cs-hero { padding: 48px 0 56px calc(72px + 36px); }
.cs-hero .meta-ribbon {
  display: flex; flex-wrap: wrap; gap: 4px 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 28px;
}
.cs-hero .meta-ribbon span { display: inline-flex; align-items: baseline; gap: 10px; }
.cs-hero .meta-ribbon span + span::before {
  content: '/'; color: var(--rule-strong); margin-right: 12px;
}
.cs-hero h1 {
  font-family: var(--font-display);
  font-weight: 420;
  font-size: var(--t-2xl);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 22ch;
  text-wrap: balance;
}
.cs-hero .subtitle {
  margin: 24px 0 0;
  font-size: var(--t-md);
  line-height: 1.55;
  color: var(--ink-mute);
}

/* TL;DR */
.tldr {
  margin: 0;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.tldr dt {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 8px;
}
.tldr dd {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.45;
  color: var(--ink);
}

/* numbered body sections */
.cs-section {
  padding: 60px 0 10px;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 36px;
}
.cs-section:first-of-type { border-top: none; padding-top: 56px; }
.cs-section .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  padding-top: 10px;
}
.cs-section h2 {
  font-family: var(--font-display);
  font-size: var(--t-lg);
  font-weight: 500;
  letter-spacing: -0.012em;
  margin: 0 0 16px;
  color: var(--ink);
}
.cs-section p {
  font-size: var(--t-base);
  line-height: 1.7;
  color: var(--ink-2);
  margin: 0 0 16px;
}
.cs-section p.lede {
  font-size: var(--t-md);
  color: var(--ink);
  margin-bottom: 22px;
}
.cs-section ul {
  margin: 8px 0 18px;
  padding-left: 0;
  list-style: none;
}
.cs-section ul li {
  padding-left: 22px;
  position: relative;
  font-size: var(--t-base);
  line-height: 1.7;
  color: var(--ink-2);
  margin-bottom: 6px;
}
.cs-section ul li::before {
  content: '§';
  position: absolute; left: 0; top: 0;
  color: var(--accent);
  font-family: var(--font-display);
  font-style: italic;
}

/* details / summary — Read more disclosures */
.cs-section details {
  margin: 4px 0 20px;
}
.cs-section summary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  cursor: pointer;
  list-style: none;
  padding: 7px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: var(--bg);
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease;
  user-select: none;
}
.cs-section summary::-webkit-details-marker { display: none; }
.cs-section summary::marker { display: none; }
.cs-section summary::after {
  content: '+';
  color: var(--accent);
  font-size: 15px;
  line-height: 1;
  font-family: var(--font-sans);
  font-weight: 400;
}
.cs-section details[open] > summary {
  color: var(--ink);
  border-color: var(--accent);
  background: var(--accent-wash);
  margin-bottom: 4px;
}
.cs-section details[open] > summary::after { content: '−'; }
.cs-section summary:hover {
  color: var(--ink);
  border-color: var(--accent);
  background: var(--accent-wash);
}

.pullquote {
  margin: 24px 0;
  padding: 4px 0 4px 24px;
  border-left: 2px solid var(--accent);
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--t-lg);
  line-height: 1.35;
  color: var(--ink);
  max-width: 56ch;
}

/* next / prev */
.cs-nextprev {
  margin-top: 32px;
  padding: 40px 0 16px;
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.cs-nextprev a {
  display: block;
  text-decoration: none;
  color: var(--ink);
  padding: 20px;
  border: 1px solid var(--rule-strong);
  border-radius: 2px;
  background: var(--bg);
  transition: border-color 180ms ease, background 180ms ease;
}
.cs-nextprev a:hover { border-color: var(--accent); background: var(--accent-wash); }
.cs-nextprev .np-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.cs-nextprev .np-title {
  font-family: var(--font-display);
  font-size: var(--t-md);
  font-weight: 420;
  letter-spacing: -0.012em;
  color: var(--ink);
}
.cs-nextprev .np-desc {
  font-size: 14px;
  color: var(--ink-mute);
  margin-top: 6px;
  font-family: var(--font-serif);
}
.cs-nextprev .right { text-align: right; }
.cs-nextprev .right .np-label { justify-content: flex-end; }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .hero h1 { font-size: 52px; }
}

@media (max-width: 760px) {
  :root { --pad-x: 22px; }
  .hero { padding: 72px 0 56px; }
  .hero h1 { font-size: var(--t-2xl); }
  .section { padding: 56px 0; }
  .section h2 { font-size: var(--t-lg); }
  .work-list a { grid-template-columns: 22px 72px 1fr 48px; gap: 14px; padding: 18px 4px; }
  .work-list .thumb { width: 72px; height: 54px; }
  .work-list .tag { display: none; }
  .work-list .title { font-size: var(--t-md); }
  .contact-email { font-size: var(--t-lg); }
  .tldr { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .cs-hero h1 { font-size: var(--t-xl); }
  .cs-section { grid-template-columns: 48px 1fr; gap: 20px; padding-top: 48px; }
  .cs-nextprev { grid-template-columns: 1fr; }
  .cs-nextprev .right { text-align: left; }
  .cs-nextprev .right .np-label { justify-content: flex-start; }
}

/* lightbox */
.cs-feature img,
.exhibit-body img,
.ba .panel .body img,
.cs-gallery .tile img { cursor: zoom-in; }

.lightbox {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(22, 19, 15, 0.93);
  display: flex; align-items: center; justify-content: center;
  padding: 32px;
  opacity: 0; pointer-events: none;
  transition: opacity 200ms ease;
}
.lightbox.is-open { opacity: 1; pointer-events: all; }
.lightbox img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  border-radius: 3px;
  box-shadow: 0 12px 60px rgba(0, 0, 0, 0.7);
  cursor: zoom-out;
}