/* ============================================================
   SHIPYARD — a launch kit for developer tools
   v1.0.0 · MIT (free tier) / Shipyard License (pro tier)
   No build step. No dependencies. Two themes.
   ============================================================ */

/* ---- 1. Tokens ------------------------------------------- */

:root {
  /* Draft (light) — warm paper, oxide ink */
  --paper:        #f4f1ea;
  --paper-sunk:   #eae6dc;
  --paper-raised: #fbf9f4;
  --ink:          #16150f;
  --ink-soft:     #4c4940;
  --ink-faint:    #8a8578;
  --rule:         #d8d2c4;
  --rule-strong:  #b9b2a1;
  --accent:       #c9401a;
  --accent-ink:   #fbf9f4;
  --accent-wash:  #f6e2da;
  --marine:       #0f4d46;
  --grid:         rgba(22, 21, 15, 0.055);
  --grain:        0.028;
  --shadow:       0 1px 0 var(--rule-strong);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:        #0b0e12;
    --paper-sunk:   #070a0d;
    --paper-raised: #12171d;
    --ink:          #e9e5da;
    --ink-soft:     #a0a89b;
    --ink-faint:    #656f68;
    --rule:         #1f272f;
    --rule-strong:  #2f3a45;
    --accent:       #ff5a1f;
    --accent-ink:   #0b0e12;
    --accent-wash:  #24160f;
    --marine:       #4fd6c1;
    --grid:         rgba(233, 229, 218, 0.045);
    --grain:        0.05;
    --shadow:       0 1px 0 var(--rule-strong);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --paper:        #0b0e12;
  --paper-sunk:   #070a0d;
  --paper-raised: #12171d;
  --ink:          #e9e5da;
  --ink-soft:     #a0a89b;
  --ink-faint:    #656f68;
  --rule:         #1f272f;
  --rule-strong:  #2f3a45;
  --accent:       #ff5a1f;
  --accent-ink:   #0b0e12;
  --accent-wash:  #24160f;
  --marine:       #4fd6c1;
  --grid:         rgba(233, 229, 218, 0.045);
  --grain:        0.05;
  --shadow:       0 1px 0 var(--rule-strong);
  color-scheme: dark;
}

:root {
  --display: "Archivo", "Helvetica Neue", sans-serif;
  --prose:   "Newsreader", Georgia, serif;
  --mono:    "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --gut: clamp(1.25rem, 4vw, 3.5rem);
  --measure: 34rem;
  --rail: 15rem;
  --tick: 0.5rem;
}

/* ---- 2. Reset -------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--prose);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.68;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }

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

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

/* ---- 3. Atmosphere: drafting grid + grain ---------------- */

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 120% 80% at 50% 0%, #000 20%, transparent 78%);
}

body::after {
  content: "";
  position: fixed;
  inset: -50%;
  pointer-events: none;
  z-index: 1;
  opacity: var(--grain);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- 4. Typography --------------------------------------- */

h1, h2, h3, h4, .display {
  font-family: var(--display);
  font-weight: 800;
  font-stretch: 125%;
  line-height: 0.94;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  text-wrap: balance;
}

h1, .h1 { font-size: clamp(2.75rem, 1.4rem + 6.4vw, 7rem); }
h2, .h2 { font-size: clamp(2rem, 1.2rem + 3.6vw, 4rem); }
h3, .h3 { font-size: clamp(1.15rem, 1rem + 0.7vw, 1.6rem); font-stretch: 112%; letter-spacing: -0.01em; }
h4, .h4 { font-size: 0.9rem; font-stretch: 105%; letter-spacing: 0.06em; font-weight: 700; }

p { text-wrap: pretty; }
p + p { margin-top: 0.9em; }

.lede {
  font-size: clamp(1.15rem, 1.02rem + 0.65vw, 1.55rem);
  line-height: 1.5;
  color: var(--ink-soft);
  max-width: 30ch;
}

.prose { max-width: var(--measure); }
.prose p + h2, .prose p + h3 { margin-top: 2.4em; }
.prose h3 + p, .prose h2 + p { margin-top: 0.9em; }
.prose ul, .prose ol { margin: 1em 0; padding-left: 1.2em; }
.prose li + li { margin-top: 0.35em; }
.prose a { color: var(--accent); text-underline-offset: 0.22em; text-decoration-thickness: 1px; }

/* Monospace chrome: every label, nav item, button, and datum */
.mono, nav a, .btn, .label, .kicker, .tag, th, .spec, .meta {
  font-family: var(--mono);
  font-feature-settings: "ss01";
}

.kicker, .label {
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
  font-weight: 500;
}

.kicker--accent { color: var(--accent); }

.num {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--accent);
}

/* ---- 5. Layout ------------------------------------------- */

.shell {
  position: relative;
  z-index: 2;
  max-width: 82rem;
  margin-inline: auto;
  padding-inline: var(--gut);
}

section { position: relative; z-index: 2; }

.band {
  border-top: 1px solid var(--rule);
  padding-block: clamp(3.5rem, 8vw, 7rem);
}

.band--sunk { background: var(--paper-sunk); }

/* Section head: number in a left rail, title beside it */
.sec-head {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: var(--gut);
  align-items: start;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}
.sec-head__rail { padding-top: 0.55rem; }
@media (max-width: 52rem) {
  .sec-head { grid-template-columns: 1fr; gap: 0.75rem; }
  .sec-head__rail { padding-top: 0; }
}

.cols {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: var(--gut);
}
@media (max-width: 52rem) { .cols { grid-template-columns: 1fr; } }

/* ---- 6. Spec strip (datasheet header) -------------------- */

.strip {
  position: relative;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.5rem;
  align-items: center;
  border-bottom: 1px solid var(--rule);
  padding: 0.5rem var(--gut);
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-faint);
  background: var(--paper);
}
.strip b { color: var(--ink); font-weight: 500; }
.strip .sep { color: var(--rule-strong); }
@media (max-width: 40rem) { .strip > *:nth-child(n+5) { display: none; } }

/* ---- 7. Masthead ----------------------------------------- */

.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--rule);
}
.masthead__in {
  max-width: 82rem;
  margin-inline: auto;
  padding: 0.85rem var(--gut);
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.wordmark {
  font-family: var(--display);
  font-weight: 800;
  font-stretch: 125%;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.wordmark::before {
  content: "";
  width: 0.7rem; height: 0.7rem;
  background: var(--accent);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.masthead nav { margin-left: auto; display: flex; gap: 1.35rem; align-items: center; }
.masthead nav a {
  font-size: 0.6875rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.18s, border-color 0.18s;
}
.masthead nav a:hover { color: var(--ink); border-bottom-color: var(--accent); }
.masthead nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
@media (max-width: 46rem) { .masthead nav a.opt { display: none; } }
@media (max-width: 30rem) {
  .masthead__in { gap: 0.75rem; }
  .masthead nav { gap: 0.75rem; }
  .masthead nav .btn { padding: 0.6rem 0.7rem; letter-spacing: 0.08em; }
  .masthead nav .btn .btn__arrow { display: none; }
}

/* ---- 8. Buttons ------------------------------------------ */

.btn {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.15rem;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bg);
  border-radius: 0;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  white-space: nowrap;
  transition: transform 0.14s cubic-bezier(.2,.8,.3,1), box-shadow 0.14s;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 3px 3px 0 var(--accent); }
.btn:active { transform: translate(0, 0); box-shadow: 0 0 0 var(--accent); }

.btn--accent { --btn-bg: var(--accent); --btn-fg: var(--accent-ink); }
.btn--accent:hover { box-shadow: 3px 3px 0 var(--ink); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  border-color: var(--rule-strong);
}
.btn--ghost:hover { box-shadow: 3px 3px 0 var(--rule-strong); }

.btn__arrow { transition: transform 0.18s; }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* ---- 9. Registration-mark card --------------------------- */

.card {
  position: relative;
  border: 1px solid var(--rule);
  background: var(--paper-raised);
  padding: clamp(1.25rem, 2.4vw, 1.9rem);
}
.card--flat { background: transparent; }

/* corner ticks, like crop marks on a press sheet */
.card::before, .card::after {
  content: "";
  position: absolute;
  width: var(--tick); height: var(--tick);
  border: 1px solid var(--accent);
  opacity: 0;
  transition: opacity 0.22s;
}
.card::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.card::after  { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }
.card:hover::before, .card:hover::after { opacity: 1; }

.card__n {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.9rem;
}
.card h3 { margin-bottom: 0.55rem; }
.card p { color: var(--ink-soft); font-size: 0.95rem; line-height: 1.6; }

.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr));
  gap: 0;
  border: 1px solid var(--rule);
}
.grid-cards > .card {
  border: 0;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin: -1px 0 0 -1px;
  background: transparent;
}
.grid-cards > .card:hover { background: var(--paper-raised); }

/* ---- 10. Terminal / code --------------------------------- */

.term {
  border: 1px solid var(--rule-strong);
  background: var(--paper-sunk);
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.85;
  position: relative;
}
.term__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border-bottom: 1px solid var(--rule);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.term__bar i {
  width: 0.45rem; height: 0.45rem; border-radius: 50%;
  background: var(--rule-strong); display: inline-block;
}
.term__bar i:first-child { background: var(--accent); }
.term__body { padding: 1rem 1.1rem; overflow-x: auto; }
.term__body .pr { color: var(--accent); user-select: none; }
.term__body .cm { color: var(--ink-faint); }
.term__body .ok { color: var(--marine); }
.term pre { margin: 0; font: inherit; }

code:not(pre code) {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--paper-sunk);
  border: 1px solid var(--rule);
  padding: 0.05em 0.35em;
}

/* ---- 11. Tables (changelog / pricing / docs) ------------- */

table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
th {
  font-size: 0.625rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-faint); font-weight: 500; border-bottom-color: var(--rule-strong);
}
tbody tr:hover { background: var(--paper-raised); }

.tag {
  display: inline-block;
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.15rem 0.4rem;
  border: 1px solid currentColor;
  color: var(--ink-faint);
}
.tag--add { color: var(--marine); }
.tag--fix { color: var(--accent); }
.tag--brk { color: var(--ink); background: var(--accent-wash); }

/* ---- 12. Reveal on scroll -------------------------------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s cubic-bezier(.2,.7,.3,1), transform 0.6s cubic-bezier(.2,.7,.3,1);
  transition-delay: var(--d, 0ms);
}
[data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---- 13. Theme toggle ------------------------------------ */

.theme {
  width: 2rem; height: 2rem;
  display: grid; place-items: center;
  border: 1px solid var(--rule-strong);
  background: transparent;
  cursor: pointer;
  transition: border-color 0.18s, color 0.18s;
}
.theme:hover { border-color: var(--accent); color: var(--accent); }
.theme svg { width: 0.95rem; height: 0.95rem; }
.theme .moon { display: none; }
:root[data-theme="dark"] .theme .moon { display: block; }
:root[data-theme="dark"] .theme .sun { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme .moon { display: block; }
  :root:not([data-theme="light"]) .theme .sun { display: none; }
}

/* ---- 14. Footer ------------------------------------------ */

.foot {
  border-top: 1px solid var(--rule);
  padding-block: 3rem 2rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
}
.foot__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}
.foot ul { list-style: none; padding: 0; }
.foot li { margin-top: 0.4rem; }
.foot a { text-decoration: none; color: var(--ink-soft); }
.foot a:hover { color: var(--accent); }
.foot__base {
  display: flex; flex-wrap: wrap; gap: 1rem;
  justify-content: space-between; align-items: center;
  border-top: 1px solid var(--rule); padding-top: 1.25rem;
  font-family: var(--mono); font-size: 0.625rem;
  letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-faint);
}

/* ---- 15. Utilities --------------------------------------- */

.stack > * + * { margin-top: var(--s, 1rem); }
.row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
.hr { border: 0; border-top: 1px solid var(--rule); }
.center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---- 16. Docs layout (pro) ------------------------------- */

.docs {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
  padding-block: clamp(2.5rem, 5vw, 4rem);
}
@media (max-width: 58rem) { .docs { grid-template-columns: 1fr; } }

.docs__side {
  position: sticky;
  top: 4.75rem;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  padding-right: 0.5rem;
}
@media (max-width: 58rem) {
  .docs__side {
    position: static; max-height: none;
    border-bottom: 1px solid var(--rule); padding-bottom: 1.5rem;
  }
}
.docs__side ul { list-style: none; padding: 0; margin: 0 0 1.75rem; }
.docs__side li { margin: 0; }
.docs__side a {
  display: block;
  font-family: var(--mono);
  font-size: 0.75rem;
  text-decoration: none;
  color: var(--ink-soft);
  padding: 0.28rem 0 0.28rem 0.75rem;
  border-left: 1px solid var(--rule);
  transition: color 0.16s, border-color 0.16s;
}
.docs__side a:hover { color: var(--ink); border-left-color: var(--rule-strong); }
.docs__side a[aria-current="true"] { color: var(--accent); border-left-color: var(--accent); }

.docs__body h2 { margin-top: 3.25rem; scroll-margin-top: 5.5rem; }
.docs__body h2:first-child { margin-top: 0; }
.docs__body h3 { margin-top: 2rem; scroll-margin-top: 5.5rem; }
.docs__body .term { margin: 1.25rem 0; }

.callout {
  border-left: 2px solid var(--accent);
  background: var(--accent-wash);
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0;
  font-size: 0.925rem;
}
.callout .label { color: var(--accent); margin-bottom: 0.3rem; }

.pager {
  display: flex; justify-content: space-between; gap: 1rem;
  border-top: 1px solid var(--rule); margin-top: 3.5rem; padding-top: 1.5rem;
}
.pager a { text-decoration: none; font-family: var(--mono); font-size: 0.75rem; color: var(--ink-soft); }
.pager a:hover { color: var(--accent); }

/* ---- 17. Changelog spine (pro) --------------------------- */

.release { scroll-margin-top: 5.5rem; }
.release + .release { margin-top: 0; }
.release__head {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  gap: var(--gut);
  border-top: 1px solid var(--rule);
  padding-top: 1.5rem;
}
@media (max-width: 52rem) { .release__head { grid-template-columns: 1fr; gap: 0.5rem; } }
.release__meta { font-family: var(--mono); font-size: 0.6875rem; letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-faint); }
.release__body { padding-bottom: 2.75rem; }
.release ul { list-style: none; padding: 0; margin: 1rem 0 0; }
.release li {
  display: grid; grid-template-columns: 5.25rem minmax(0, 1fr);
  gap: 0.9rem; align-items: baseline;
  padding: 0.45rem 0; border-bottom: 1px solid var(--rule);
  font-size: 0.925rem;
}
@media (max-width: 34rem) { .release li { grid-template-columns: 1fr; gap: 0.3rem; } }

/* ---- 18. Pricing tiers (pro) ----------------------------- */

.tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  border: 1px solid var(--rule-strong);
}
.tier {
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border-right: 1px solid var(--rule);
  display: flex; flex-direction: column;
}
.tier:last-child { border-right: 0; }
@media (max-width: 52rem) { .tier { border-right: 0; border-bottom: 1px solid var(--rule); } }
.tier--featured { background: var(--paper-raised); position: relative; }
.tier--featured::before {
  content: "Most chosen";
  position: absolute; top: 0; right: 0;
  background: var(--accent); color: var(--accent-ink);
  font-family: var(--mono); font-size: 0.5625rem;
  letter-spacing: 0.13em; text-transform: uppercase;
  padding: 0.22rem 0.55rem;
}
.tier__price {
  font-family: var(--display); font-weight: 800; font-stretch: 125%;
  font-size: clamp(2.5rem, 6vw, 3.5rem); line-height: 1;
  margin: 1rem 0 0.25rem;
}
.tier__price small { font-family: var(--mono); font-size: 0.6875rem; font-weight: 400; letter-spacing: 0.1em; color: var(--ink-faint); }
.tier ul { list-style: none; padding: 0; margin: 1.5rem 0 2rem; font-size: 0.9rem; }
.tier li { padding: 0.4rem 0; border-bottom: 1px solid var(--rule); color: var(--ink-soft); }
.tier li::before { content: "—"; color: var(--accent); margin-right: 0.55rem; }
.tier .btn { margin-top: auto; justify-content: center; }

.compare { overflow-x: auto; }
.compare table { min-width: 34rem; }
.compare td:not(:first-child), .compare th:not(:first-child) { text-align: center; }
.compare .yes { color: var(--marine); font-family: var(--mono); }
.compare .no { color: var(--ink-faint); font-family: var(--mono); }

/* Docs headings read, they do not shout — override the poster scale */
.docs__body h1 { font-size: clamp(2rem, 1.5rem + 1.7vw, 2.85rem); }
.docs__body h2 { font-size: clamp(1.3rem, 1.1rem + 0.8vw, 1.7rem); font-stretch: 112%; margin-top: 2.75rem; }
.docs__body h3 { font-size: 1.05rem; font-stretch: 105%; }
.docs__body .lede { font-size: clamp(1.05rem, 1rem + 0.35vw, 1.25rem); max-width: 38ch; }