/* ───────────────────────────────────────────────────────────────────────
   Tokunia — landing page.

   The page is a ledger printed on ink: a warm near-black ground, and one
   piece of cream receipt stock carrying the product's whole thesis. Two
   accents encode the two axes the product measures — ember for what a run
   costs you, matcha for what it costs the planet. Nothing else is coloured.
   ─────────────────────────────────────────────────────────────────────── */

:root {
  --ink: #0e0d0c;
  --ink-2: #161311;
  --ink-3: #1d1917;
  --rule: #2c2622;
  --fg: #ede9e3;
  --muted: #8e857a;

  --paper: #ede7da;
  --paper-2: #ded5c3;
  --paper-ink: #26221e;
  --paper-muted: #6f675c;

  --ember: #f97316;
  --matcha: #8fb173;

  --display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --body: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --gutter: clamp(1.25rem, 5vw, 5rem);
  --measure: 60ch;
}

*,
*::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(--ink);
  color: var(--fg);
  font-family: var(--body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  /* A faint vertical ledger tint, so the ground isn't a flat black field. */
  background-image: radial-gradient(
    120% 80% at 70% -10%,
    rgba(249, 115, 22, 0.06),
    transparent 60%
  );
  background-repeat: no-repeat;
}

a {
  color: inherit;
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--ember);
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--paper);
  color: var(--paper-ink);
  padding: 0.6rem 1rem;
  z-index: 20;
}
.skip:focus {
  left: 0.5rem;
  top: 0.5rem;
}

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

/* ── Top bar ─────────────────────────────────────────────────────────── */

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem var(--gutter);
  border-bottom: 1px solid var(--rule);
}

.wordmark {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}
.wordmark__ia {
  color: var(--ember);
}
.wordmark__dot {
  color: var(--muted);
  padding: 0 0.06em;
}

.bar__nav {
  display: flex;
  gap: 1.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}
.bar__nav a {
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.18s, border-color 0.18s;
}
.bar__nav a:hover {
  color: var(--fg);
  border-bottom-color: var(--ember);
}

/* ── Hero ────────────────────────────────────────────────────────────── */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
  padding: clamp(3rem, 9vw, 7rem) var(--gutter) clamp(3rem, 8vw, 6rem);
}

.eyebrow {
  margin: 0 0 1.4rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 1.6rem;
  height: 1px;
  background: var(--ember);
  vertical-align: middle;
  margin-right: 0.7rem;
}

.display {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.9rem, 8.5vw, 5.6rem);
  line-height: 0.94;
  letter-spacing: -0.035em;
}
.display em {
  font-style: normal;
  color: var(--ember);
}

.lede {
  margin: 1.6rem 0 0;
  max-width: 44ch;
  color: #cfc8bf;
  font-size: 1.08em;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.82rem 1.5rem;
  border: 1px solid var(--rule);
  color: var(--fg);
  background: var(--ink-2);
  transition: border-color 0.18s, background 0.18s, transform 0.18s;
}
.btn:hover {
  border-color: var(--muted);
  transform: translateY(-1px);
}
.btn--primary {
  background: var(--ember);
  border-color: var(--ember);
  color: #1a0d02;
  font-weight: 600;
}
.btn--primary:hover {
  background: #ff8a35;
  border-color: #ff8a35;
}

.footnote {
  margin: 1.4rem 0 0;
  max-width: 42ch;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ── The receipt (signature) ─────────────────────────────────────────── */

.receipt {
  margin: 0;
  justify-self: center;
}

.receipt__paper {
  position: relative;
  width: min(23rem, 100%);
  background: var(--paper);
  color: var(--paper-ink);
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.9;
  padding: 2rem 1.6rem 2.6rem;
  transform: rotate(-1.1deg);
  box-shadow:
    0 24px 50px -18px rgba(0, 0, 0, 0.85),
    0 4px 14px rgba(0, 0, 0, 0.4);
}

/* Torn thermal-paper edges, drawn as two zigzag strips that overhang the paper
   rather than as a mask on the paper itself — a mask on the parent would clip
   these pseudo-elements away, and would take the drop shadow with it. */
.receipt__paper::before,
.receipt__paper::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 9px;
  background: var(--paper);
  -webkit-mask: var(--zigzag);
  mask: var(--zigzag);
  --zigzag: conic-gradient(from 135deg at 50% 0, #000 0 90deg, transparent 0) 0 0 /
    14px 100% repeat-x;
}
.receipt__paper::before {
  top: -9px;
  transform: rotate(180deg);
}
.receipt__paper::after {
  bottom: -9px;
}

.receipt__head {
  text-align: center;
}
.receipt__brand {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.16em;
  line-height: 1.2;
}
.receipt__sub {
  margin: 0.15rem 0 0;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--paper-muted);
}

.receipt__rule {
  border: 0;
  border-top: 1px dashed rgba(38, 34, 30, 0.42);
  margin: 0.9rem 0;
}
.receipt__rule--double {
  border-top: 3px double rgba(38, 34, 30, 0.6);
}

.receipt__meta {
  margin: 0;
}
.receipt__meta > div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}
.receipt__meta dt {
  color: var(--paper-muted);
  letter-spacing: 0.08em;
  font-size: 0.72rem;
}
.receipt__meta dd {
  margin: 0;
}

.receipt__items {
  list-style: none;
  margin: 0;
  padding: 0;
}
/* The dotted leader is the page's structural device: label … value, which is
   exactly what the product does to an agent run. */
.receipt__items li {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
}
.receipt__items li::before {
  content: "";
  order: 2;
  flex: 1;
  border-bottom: 1px dotted rgba(38, 34, 30, 0.45);
  transform: translateY(-0.22em);
}
.receipt__items li span {
  order: 1;
}
.receipt__items li b {
  order: 3;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.receipt__items--eco b {
  color: #4d6b39;
}

.receipt__total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.receipt__total span {
  font-size: 0.8rem;
  letter-spacing: 0.16em;
}
.receipt__total b {
  font-variant-numeric: tabular-nums;
}

.receipt__note {
  margin: 0;
  text-align: right;
  font-size: 0.72rem;
  color: var(--paper-muted);
}
.receipt__note--eco {
  color: #4d6b39;
}

.receipt__section {
  margin: 0;
  text-align: center;
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: #4d6b39;
}

.receipt__thanks {
  margin: 0;
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  color: var(--paper-muted);
}

.receipt__caption {
  margin: 2.2rem auto 0;
  max-width: 30ch;
  text-align: center;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--muted);
}
.receipt__caption a {
  color: var(--muted);
  text-underline-offset: 3px;
}
.receipt__caption a:hover {
  color: var(--fg);
}

/* Lines print in sequence on load, the way a thermal printer feeds paper. */
@media (prefers-reduced-motion: no-preference) {
  .js [data-line] {
    opacity: 0;
    transform: translateY(-4px);
  }
  .js .receipt--printing [data-line] {
    animation: print-line 0.34s ease-out forwards;
    animation-delay: calc(var(--i, 0) * 55ms + 200ms);
  }
}

@keyframes print-line {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ── Archive strip ───────────────────────────────────────────────────── */

.strip {
  padding: clamp(2rem, 5vw, 3.2rem) var(--gutter);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: var(--ink-2);
}

.strip__intro {
  margin: 0 0 1.6rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.strip__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 1.8rem 2.5rem;
  margin: 0;
}
.strip__stats dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  order: 2;
}
.strip__stats dd {
  margin: 0;
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2rem, 4.5vw, 2.9rem);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  order: 1;
}
.strip__stats dd span {
  color: var(--ember);
}
.strip__stats > div {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

/* ── Generic section ─────────────────────────────────────────────────── */

.section {
  padding: clamp(3.5rem, 9vw, 6.5rem) var(--gutter);
  border-bottom: 1px solid var(--rule);
}

.section__title {
  margin: 0 0 clamp(2rem, 4vw, 3rem);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}
.section__title::after {
  content: "";
  display: block;
  height: 1px;
  margin-top: 0.9rem;
  background: linear-gradient(
    to right,
    var(--rule) 0%,
    var(--rule) 92%,
    transparent 100%
  );
}

/* ── What it does: ledger lines ──────────────────────────────────────── */

.lines {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.line {
  display: grid;
  grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
  gap: 1rem clamp(1.5rem, 5vw, 4rem);
  padding: 1.6rem 0;
  border-top: 1px solid var(--rule);
}
.line:last-child {
  border-bottom: 1px solid var(--rule);
}

.line__label {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.line__label span {
  border-bottom: 2px solid var(--ember);
  padding-bottom: 0.15rem;
}

.line__body p {
  margin: 0;
  max-width: var(--measure);
  color: #c6bfb6;
}

/* ── Screens ─────────────────────────────────────────────────────────── */

.shot {
  margin: 0;
}
.shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  background: var(--ink-2);
}
.shot figcaption {
  margin-top: 0.85rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  color: var(--muted);
}

.shot--wide {
  margin-bottom: 2.5rem;
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: 2.5rem;
}

/* ── Pillars ─────────────────────────────────────────────────────────── */

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.pillar {
  background: var(--ink-2);
  padding: clamp(1.6rem, 3vw, 2.2rem);
}
.pillar h3 {
  margin: 0 0 0.9rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}
.pillar p {
  margin: 0;
  color: #c6bfb6;
  font-size: 0.96em;
}
.pillar--eco {
  border-top: 2px solid var(--matcha);
}
.pillar--eco h3 {
  color: var(--matcha);
}

/* ── Run it ──────────────────────────────────────────────────────────── */

.run {
  max-width: 52rem;
}

.run__code {
  margin: 0;
  padding: 1.5rem;
  background: var(--ink-2);
  border: 1px solid var(--rule);
  border-left: 2px solid var(--ember);
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.9;
  color: var(--fg);
}
.run__code code {
  color: inherit;
  font-size: inherit;
}
.run__comment {
  color: var(--matcha);
}

.run__note {
  margin: 1.3rem 0 0;
  max-width: var(--measure);
  color: #c6bfb6;
  font-size: 0.95em;
}

/* The build caveat is set apart rather than buried: it is the one thing a
   reader would otherwise discover the hard way. */
.run__caveat {
  margin: 1.3rem 0 0;
  max-width: var(--measure);
  padding-left: 1rem;
  border-left: 2px solid var(--matcha);
  font-size: 0.9em;
  color: var(--muted);
}
.run__caveat b {
  color: var(--matcha);
  font-weight: 600;
}
.run__caveat a {
  color: #c6bfb6;
  text-underline-offset: 3px;
}
.run__caveat a:hover {
  color: var(--fg);
}

.section--run .cta {
  margin-top: 1.8rem;
}

/* ── Footer ──────────────────────────────────────────────────────────── */

.foot {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.9rem 2rem;
  padding: clamp(2.5rem, 6vw, 4rem) var(--gutter);
}

.foot__mark {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.foot__mark span {
  color: var(--muted);
}

.foot__etym {
  margin: 0;
  flex: 1;
  min-width: 16rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.foot__etym i {
  color: #c6bfb6;
}

.foot__nav {
  display: flex;
  gap: 1.5rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}
.foot__nav a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s, border-color 0.18s;
}
.foot__nav a:hover {
  color: var(--fg);
  border-bottom-color: var(--ember);
}

/* ── Narrow screens ──────────────────────────────────────────────────── */

@media (max-width: 60rem) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
    gap: 3.5rem;
  }
  .receipt {
    justify-self: start;
  }
  .line {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.7rem;
  }
}

@media (max-width: 30rem) {
  .receipt__paper {
    transform: none;
    width: 100%;
  }
  .bar__nav {
    gap: 1rem;
  }
}