/* Ji-Won Park — v2 */

:root {
  --ink: #101315;
  --ink-soft: #3d4348;
  --paper: #f4f1ec;
  --paper-2: #eae5dd;
  --rule: rgba(16, 19, 21, 0.16);
  --rule-soft: rgba(16, 19, 21, 0.09);
  --muted: #6b655e;
  /* Accent. --signal sits on paper, --signal-lift on the dark hero (a dark
     accent cannot make 4.5:1 against #0b0d0e). To reswatch the whole site,
     change these three lines and nothing else.
       machinery green  #1b5e3f / #57b183 / #14432e   (current)
       racing green     #14532d / #4ea87a / #0f3d21
       deep teal        #0f5257 / #3fa6ad / #0b3d41
       prussian blue    #1b3a5c / #6aa5da / #142c45
       oxblood          #7c2128 / #d4696f / #5e181d          */
  --signal: #1b5e3f;
  --signal-lift: #57b183;
  --signal-deep: #14432e;
  --scope-bg: #0b0d0e;
  --scope-dim: rgba(226, 232, 236, 0.62);
  --measure: 62ch;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --max: 1140px;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Archivo, ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.62;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul, dl, dd, figure, blockquote { margin: 0; }
ul { padding: 0; list-style: none; }
img { display: block; max-width: 100%; }
a { color: inherit; }

.mono {
  font-family: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 40;
  padding: 0.7rem 1rem;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ---------- header ---------- */

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding: 1.75rem var(--gutter);
  color: var(--scope-dim);
}

.site-header a { text-decoration: none; }
.brand { color: #f2efe9; }
.site-nav { display: flex; gap: 1.35rem; }
.site-nav a { color: var(--scope-dim); transition: color 0.15s; }
.site-nav a:hover, .site-nav a:focus-visible { color: #f2efe9; }

/* ---------- hero ---------- */

.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 100svh;
  background: var(--scope-bg);
  color: #f2efe9;
  overflow: hidden;
}

#scope {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(11,13,14,0.95) 0%, rgba(11,13,14,0.84) 36%, rgba(11,13,14,0.08) 74%),
    linear-gradient(0deg, rgba(11,13,14,0.88) 0%, transparent 42%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding: 0 var(--gutter) clamp(3.5rem, 9vh, 6rem);
}

.hero-role { color: var(--signal-lift); }
.hero-role span { color: var(--scope-dim); }

.hero h1 {
  max-width: 17ch;
  margin-top: 1.35rem;
  font-size: clamp(2.5rem, 6.2vw, 4.8rem);
  line-height: 1.03;
  font-weight: 500;
  letter-spacing: -0.028em;
}

.hero-lede {
  max-width: 54ch;
  margin-top: 1.6rem;
  color: rgba(242, 239, 233, 0.78);
  font-size: clamp(1.02rem, 1.5vw, 1.2rem);
}

.hero-lede strong { font-weight: 500; color: #f2efe9; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 2.9rem;
  padding: 0.6rem 1.15rem;
  border: 1px solid rgba(242, 239, 233, 0.28);
  color: #f2efe9;
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 500;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover, .btn:focus-visible { background: rgba(242, 239, 233, 0.1); border-color: rgba(242, 239, 233, 0.55); }
.btn-primary { background: var(--signal); border-color: var(--signal); }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--signal-deep); border-color: var(--signal-deep); }

.scope-switch {
  position: absolute;
  right: var(--gutter);
  bottom: 5.5rem;
  z-index: 3;
  display: flex;
  gap: 0.4rem;
}

.scope-switch button {
  padding: 0.4rem 0.75rem;
  background: transparent;
  border: 1px solid rgba(242, 239, 233, 0.22);
  color: rgba(226, 232, 236, 0.55);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.scope-switch button:hover { color: #f2efe9; }
.scope-switch button[aria-pressed="true"] {
  color: #f2efe9;
  border-color: rgba(242, 239, 233, 0.6);
}

/* ---------- origin note ---------- */

.origin {
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
}

.origin .wrap {
  display: grid;
  gap: 1.5rem;
  padding-block: clamp(3.5rem, 8vw, 6rem);
}

.origin p {
  max-width: 66ch;
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  line-height: 1.48;
  letter-spacing: -0.012em;
}

.origin p + p {
  color: var(--ink-soft);
  font-size: 1.0625rem;
  line-height: 1.62;
  letter-spacing: 0;
}

.origin .turn { color: var(--signal); }

/* ---------- scope bar ---------- */

.scope-bar { border-bottom: 1px solid var(--rule); }

.scope-bar .wrap {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  padding-inline: 0;
}

.scope-item {
  padding: 2.25rem var(--gutter);
  border-right: 1px solid var(--rule-soft);
}
.scope-item:last-child { border-right: 0; }
.scope-item dt { color: var(--muted); }

.scope-item .figure {
  display: block;
  margin-top: 0.7rem;
  font-size: clamp(2rem, 3.6vw, 2.9rem);
  line-height: 1;
  font-weight: 500;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.scope-item dd {
  margin: 0.7rem 0 0;
  max-width: 26ch;
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.5;
}

/* ---------- casework ---------- */

.casework { padding-block: clamp(4rem, 9vw, 7rem); }

.section-label {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
}
.section-label .count { margin-left: auto; }

.case { margin-top: clamp(2.5rem, 5vw, 3.5rem); }

.case-head {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}

.case-index { color: var(--signal); padding-top: 0.5rem; }
.case-index span { display: block; color: var(--muted); margin-top: 0.55rem; }

.case-head h2 {
  max-width: 20ch;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.07;
  font-weight: 500;
  letter-spacing: -0.028em;
}

.case-body,
.rail-block {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 2.5rem;
  margin-top: 3rem;
  padding-top: 2.25rem;
  border-top: 1px solid var(--rule-soft);
}

.case-body .beat,
.rail-block .beat { color: var(--muted); padding-top: 0.4rem; }

.case-body .prose,
.rail-block .prose { max-width: var(--measure); }
.case-body .prose > * + *,
.rail-block .prose > * + * { margin-top: 1.15rem; }
.case-body .prose p,
.rail-block .prose p { color: var(--ink-soft); }
.case-body .prose > p:first-child,
.rail-block .prose > p:first-child { color: var(--ink); }

.pull {
  padding-left: 1.25rem;
  border-left: 2px solid var(--signal);
  font-size: 1.2rem;
  line-height: 1.45;
  letter-spacing: -0.012em;
}
.case-body .prose p.pull { color: var(--ink); }

.rollout { counter-reset: step; }
.rollout li {
  position: relative;
  padding-left: 2.25rem;
  color: var(--ink-soft);
}
.rollout li + li { margin-top: 0.85rem; }
.rollout li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.2rem;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.takeaway { display: grid; gap: 1.75rem; }
.takeaway h3 {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

/* ---------- prototypes ---------- */

.strip { padding-block: clamp(3.5rem, 8vw, 6rem); border-top: 1px solid var(--rule); }

.section-lede {
  max-width: 60ch;
  margin-top: 1.5rem;
  color: var(--ink-soft);
}

.proto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.proto figure {
  margin: 0 0 1.25rem;
  border: 1px solid var(--rule-soft);
  background: var(--paper-2);
}
.proto figure img { width: 100%; height: auto; }

.proto .kicker { color: var(--signal); }
.proto h3 {
  margin-top: 0.65rem;
  font-size: 1.35rem;
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: -0.018em;
}
.proto p { margin-top: 0.75rem; color: var(--ink-soft); font-size: 0.98rem; }

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}
.tags li {
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--rule);
  color: var(--muted);
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.link-out {
  display: inline-block;
  margin-top: 1.15rem;
  color: var(--signal);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.94rem;
  border-bottom: 1px solid currentColor;
}
.link-out:hover { color: var(--ink); }

/* ---------- shipped products ---------- */

.ship-list { margin-top: 2.5rem; border-top: 1px solid var(--rule-soft); }

.ship-list li {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr) auto;
  gap: 1rem 2.5rem;
  align-items: baseline;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--rule-soft);
}

.ship-list .line { color: var(--muted); }
.ship-list h3 {
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.014em;
}
.ship-list p { margin-top: 0.4rem; color: var(--ink-soft); font-size: 0.98rem; max-width: 58ch; }
.ship-list a { color: var(--signal); text-decoration: none; white-space: nowrap; font-size: 0.88rem; font-weight: 500; }
.ship-list a:hover { color: var(--ink); }

/* ---------- archive grid (work subpage) ---------- */

.page-head {
  padding-block: clamp(4rem, 9vw, 7rem) clamp(2rem, 4vw, 3rem);
}
.page-head h1 {
  max-width: 22ch;
  margin-top: 1.35rem;
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.05;
  font-weight: 500;
  letter-spacing: -0.028em;
}
.page-head .section-lede { font-size: 1.1rem; }
.page-head .back { color: var(--signal); text-decoration: none; }
.page-head .back:hover { color: var(--ink); }

.archive-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem 2rem;
  padding-bottom: clamp(4rem, 9vw, 7rem);
}

.archive-grid figure { margin: 0 0 1rem; border: 1px solid var(--rule-soft); background: var(--paper-2); }
.archive-grid img { width: 100%; height: auto; }
.archive-grid .tool { color: var(--signal); }
.archive-grid h2 {
  margin-top: 0.6rem;
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -0.014em;
}
.archive-grid p { margin-top: 0.55rem; color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- contact ---------- */

.contact {
  background: var(--scope-bg);
  color: #f2efe9;
  padding-block: clamp(4rem, 9vw, 6.5rem);
}
.contact .eyebrow { color: var(--signal-lift); }
.contact h2 {
  max-width: 26ch;
  margin-top: 1.35rem;
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  line-height: 1.12;
  font-weight: 500;
  letter-spacing: -0.026em;
}
.contact .domains {
  max-width: 60ch;
  margin-top: 1.35rem;
  color: rgba(242, 239, 233, 0.72);
}
.contact .hero-actions { margin-top: 2.25rem; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--rule);
  padding-block: 2.5rem;
  color: var(--muted);
}
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
}
.site-footer a { text-decoration: none; border-bottom: 1px solid var(--rule); }
.site-footer a:hover { color: var(--signal); border-color: var(--signal); }

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .case-head, .case-body, .rail-block { grid-template-columns: minmax(0, 1fr); gap: 1rem; }
  .case-body, .rail-block { margin-top: 2.25rem; }
  .ship-list li { grid-template-columns: minmax(0, 1fr); gap: 0.5rem; }
  .case-index { padding-top: 0; }
  .case-index span { display: inline; margin-left: 0.75rem; }
  .site-nav { display: none; }
  .scope-switch { right: auto; left: var(--gutter); bottom: auto; top: 4.5rem; }
  .scope-item {
    border-right: 0;
    border-bottom: 1px solid var(--rule-soft);
    padding-block: 1.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}