/* ---- tokens: light is the base, both dark states redefine only these ---- */
:root {
  --ground:      #eef0f1;
  --surface:     #fafbfb;
  --surface-2:   #e7eaec;
  --ink:         #15181c;
  --ink-soft:    #3c434b;
  --muted:       #626b74;
  --hairline:    #d3d8dc;
  --hairline-2:  #c2c9cf;
  --accent:      #a8481a;
  --accent-soft: #f0e2d9;
  --pine:        #2f5d46;
  --shadow:      0 1px 2px rgba(21, 24, 28, .05), 0 8px 24px -16px rgba(21, 24, 28, .3);

  --font-display: "Familjen Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body:    "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --rail: 9.5rem;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --measure: 63ch;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ground:      #0f1216;
    --surface:     #161a1f;
    --surface-2:   #1c2127;
    --ink:         #e5e8ea;
    --ink-soft:    #c3c9cf;
    --muted:       #8e969e;
    --hairline:    #262c33;
    --hairline-2:  #333b43;
    --accent:      #e07a41;
    --accent-soft: #2a1d15;
    --pine:        #74ab8d;
    --shadow:      0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -18px rgba(0, 0, 0, .9);
  }
}

:root[data-theme="dark"] {
  --ground:      #0f1216;
  --surface:     #161a1f;
  --surface-2:   #1c2127;
  --ink:         #e5e8ea;
  --ink-soft:    #c3c9cf;
  --muted:       #8e969e;
  --hairline:    #262c33;
  --hairline-2:  #333b43;
  --accent:      #e07a41;
  --accent-soft: #2a1d15;
  --pine:        #74ab8d;
  --shadow:      0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -18px rgba(0, 0, 0, .9);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .u-display { font-family: var(--font-display); text-wrap: balance; }

a { color: inherit; }

:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

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

/* ---- layout primitives ---- */
.wrap {
  width: 100%;
  max-width: 68rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.rail {
  display: grid;
  gap: 0 2.5rem;
  grid-template-columns: 1fr;
}
@media (min-width: 62rem) {
  .rail { grid-template-columns: var(--rail) minmax(0, 1fr); }
}

.rail__label {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  padding-top: .55rem;
  margin: 0 0 1.25rem;
  display: flex;
  align-items: baseline;
  gap: .6rem;
}
.rail__label::before {
  content: "";
  width: .5rem;
  height: .5rem;
  flex: none;
  background: var(--accent);
  transform: translateY(-.05rem);
}
@media (min-width: 62rem) {
  .rail__label { position: sticky; top: 5.5rem; margin-bottom: 0; }
}

/* ---- header ---- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--ground) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.site-head__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 3.5rem;
}
.wordmark {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .02em;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}
.wordmark span { color: var(--accent); }

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: clamp(.75rem, 2.5vw, 1.75rem);
}
.site-nav a {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
  padding-block: .25rem;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.site-nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }
@media (max-width: 46rem) { .site-nav a { display: none; } }

/* Language switch — stays visible when the section links collapse on small screens */
.lang {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--hairline-2);
}
.site-nav .lang a {
  display: inline-block;
  color: var(--muted);
  letter-spacing: .06em;
}
.site-nav .lang a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--hairline-2); }

.theme-toggle {
  font: inherit;
  font-family: var(--font-mono);
  font-size: .75rem;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--hairline-2);
  border-radius: 999px;
  padding: .3rem .7rem;
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--accent); }
.theme-toggle svg { width: .95rem; height: .95rem; display: block; }
.theme-toggle .icon-dark { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-dark { display: block; }
  :root:not([data-theme="light"]) .theme-toggle .icon-light { display: none; }
}
:root[data-theme="dark"] .theme-toggle .icon-dark { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-light { display: none; }

/* ---- hero ---- */
.hero { padding-block: clamp(3.5rem, 10vw, 7rem) clamp(2.5rem, 6vw, 4.5rem); }

.hero h1 {
  font-size: clamp(2.75rem, 9vw, 5.25rem);
  font-weight: 700;
  letter-spacing: -.035em;
  line-height: .95;
  margin: 0 0 1.5rem;
}
.hero h1 em {
  font-style: normal;
  display: block;
  color: var(--muted);
}

.hero__lead {
  max-width: var(--measure);
  font-size: clamp(1.125rem, 2.2vw, 1.3125rem);
  line-height: 1.6;
  color: var(--ink-soft);
  margin: 0 0 2rem;
}
.hero__lead strong { color: var(--ink); font-weight: 600; }

/* Margin note in the hero — one dry line about how the words got here */
.note {
  max-width: var(--measure);
  margin: 0 0 2rem;
  padding-left: 1rem;
  border-left: 2px solid var(--accent);
  font-family: var(--font-mono);
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--muted);
}

.chips { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 2.25rem; padding: 0; list-style: none; }
.chips li {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--ink-soft);
  border: 1px solid var(--hairline-2);
  border-radius: 999px;
  padding: .25rem .7rem;
  background: var(--surface);
}

.actions { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }

.btn {
  font-family: var(--font-mono);
  font-size: .8125rem;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  text-decoration: none;
  border: 1px solid var(--accent);
  border-radius: 2px;
  padding: .6rem 1.1rem;
  background: var(--accent);
  color: var(--ground);
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, transform .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--hairline-2);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn svg { width: 1rem; height: 1rem; }

/* ---- sections ---- */
.section {
  padding-block: clamp(3rem, 7vw, 5rem);
  border-top: 1px solid var(--hairline);
}
.section h2 {
  font-size: clamp(1.5rem, 3.2vw, 2.125rem);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.15;
  margin: 0 0 1rem;
}
.section p { max-width: var(--measure); }
.section > .rail > * > :first-child { margin-top: 0; }

.prose p { margin: 0 0 1.1rem; color: var(--ink-soft); }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--ink); font-weight: 600; }

/* ---- work list ---- */
.work { display: grid; gap: 2.25rem; margin: 0; }
.work__item { display: grid; gap: .4rem; }
.work__kicker {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}
.work__item h3 {
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0;
}
.work__item p { margin: 0; color: var(--ink-soft); }

/* ---- toolbox ---- */
.tools { display: grid; gap: 1.5rem; }
@media (min-width: 40rem) { .tools { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.75rem 2rem; } }

.tools__group h3 {
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 .6rem;
  padding-bottom: .45rem;
  border-bottom: 1px solid var(--hairline);
}
.tools__group ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .35rem .75rem; }
.tools__group li { font-size: .9375rem; color: var(--ink-soft); }

/* ---- project cards ---- */
.cards { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 48rem) { .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

.card {
  display: flex;
  flex-direction: column;
  gap: .6rem;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: 1.25rem 1.25rem 1.35rem;
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.card:hover {
  border-color: var(--hairline-2);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.card__top { display: flex; align-items: baseline; gap: .75rem; }
.card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -.01em;
  margin: 0;
}
.card h3 a { text-decoration: none; border-bottom: 1px solid var(--accent); }
.card h3 a:hover { color: var(--accent); }
.card__state {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .625rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--pine);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: .35rem;
}
.card__state::before {
  content: "";
  width: .375rem;
  height: .375rem;
  border-radius: 50%;
  background: var(--pine);
}
.card__state--idle { color: var(--muted); }
.card__state--idle::before { background: var(--muted); }
.card p { margin: 0; font-size: .9375rem; line-height: 1.6; color: var(--ink-soft); }
.card__stack {
  margin-top: auto;
  padding-top: .35rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---- spec sheet ---- */
.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: .9375rem;
}
.spec th, .spec td {
  text-align: left;
  vertical-align: baseline;
  padding: .55rem 0;
  border-bottom: 1px solid var(--hairline);
}
.spec tr:last-child th, .spec tr:last-child td { border-bottom: 0; }
.spec th {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: .6875rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  width: 11rem;
  padding-right: 1.25rem;
}
.spec td { color: var(--ink-soft); font-variant-numeric: tabular-nums; }
@media (max-width: 34rem) {
  .spec th, .spec td { display: block; width: auto; padding-block: .2rem; border-bottom: 0; }
  .spec th { padding-top: .8rem; }
  .spec td { padding-bottom: .8rem; border-bottom: 1px solid var(--hairline); }
}

/* ---- contact ---- */
.contact__grid { display: grid; gap: 1.5rem; }
.contact__mail {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3.4vw, 1.5rem);
  letter-spacing: -.01em;
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: .1rem;
  word-break: break-word;
}
.contact__mail:hover { color: var(--accent); }

.copy-btn {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--hairline-2);
  border-radius: 2px;
  color: var(--muted);
  padding: .35rem .6rem;
  cursor: pointer;
  transition: color .18s ease, border-color .18s ease;
}
.copy-btn:hover { color: var(--ink); border-color: var(--accent); }

.links { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 1.25rem; }
.links a {
  font-family: var(--font-mono);
  font-size: .8125rem;
  text-decoration: none;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  border-bottom: 1px solid var(--hairline-2);
  padding-bottom: .15rem;
  transition: color .18s ease, border-color .18s ease;
}
.links a:hover { color: var(--accent); border-color: var(--accent); }
.links svg { width: 1rem; height: 1rem; }

/* ---- footer ---- */
.site-foot {
  border-top: 1px solid var(--hairline);
  padding-block: 2rem 3rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
}

/* ---- reveal (only when scripting is on — see the `js` class in <head>) ---- */
.js .reveal { opacity: 0; transform: translateY(12px); }
.js .reveal.is-in { opacity: 1; transform: none; transition: opacity .5s ease, transform .5s ease; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal, .js .reveal.is-in { opacity: 1; transform: none; transition: none; }
  .card:hover, .btn:hover { transform: none; }
}