/* ==========================================================================
   Eridyne, design tokens and site stylesheet
   Palette: Ink + Oxide (locked, Phase A)
   Type: Instrument Serif (display) · Inter (text) · JetBrains Mono (labels)
   This file is the single source of truth; the static export uses it verbatim.
   ========================================================================== */

/* ---- Self-hosted faces (SIL OFL 1.1, embedding permitted) ------------------
   Replaces the Google Fonts <link>: no third-party request, no undisclosed
   sub-processor, and the CSP in _headers stays restricted to 'self'.
   Sources: brand/03-type/fonts/. Licences alongside the woff2 in site/fonts/. */
@font-face{font-family:"Inter";src:url("./fonts/Inter-Variable.woff2")format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
@font-face{font-family:"Inter";src:url("./fonts/Inter-Italic-Variable.woff2")format("woff2");font-weight:100 900;font-style:italic;font-display:swap}
@font-face{font-family:"Instrument Serif";src:url("./fonts/InstrumentSerif-Regular.woff2")format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Instrument Serif";src:url("./fonts/InstrumentSerif-Italic.woff2")format("woff2");font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("./fonts/JetBrainsMono-Variable.woff2")format("woff2");font-weight:100 800;font-style:normal;font-display:swap}

:root {
  /* ---- Color tokens ---------------------------------------------------- */
  --ink: #10141a;
  --ink-2: #20242b;
  --paper: #f8f6f2;
  --oxide: #9f452f;
  --oxide-deep: #6d2b1c;
  --oxide-tint: #f6e3dd;
  --neutral-1: #e6e3df;
  --neutral-2: #96918c;
  --neutral-3: #413c38;
  --rule: #d3d1cd;

  /* semantic */
  --bg: var(--paper);
  --fg: var(--ink);
  --fg-muted: var(--neutral-3);
  --fg-quiet: #6f6a65; /* AA on paper: 4.9:1 */
  --accent: var(--oxide);
  --accent-strong: var(--oxide-deep);
  --border: var(--rule);
  --border-quiet: var(--neutral-1);

  /* ---- Type ------------------------------------------------------------ */
  --font-display: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-text: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  /* modular scale, 1.25 on a 17px text base */
  --t-label: 0.75rem;   /* 12px  mono labels, uppercase, tracked */
  --t-small: 0.8125rem; /* 13px  captions, legal */
  --t-body: 1.0625rem;  /* 17px  body */
  --t-lead: 1.1875rem;  /* 19px  lead paragraphs */
  --t-h4: 1.125rem;     /* 18px */
  --t-h3: clamp(1.25rem, 0.6vw + 1.1rem, 1.4375rem);
  --t-h2: clamp(1.625rem, 1.4vw + 1.25rem, 2.125rem);
  --t-h1: clamp(2.125rem, 4.2vw + 1rem, 3.75rem);

  --lh-tight: 1.08;
  --lh-snug: 1.28;
  --lh-body: 1.62;

  /* ---- Spacing (4px base) ---------------------------------------------- */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-6: 1.5rem;
  --s-8: 2rem;
  --s-12: 3rem;
  --s-16: 4rem;
  --s-24: 6rem;
  --s-32: 8rem;

  /* ---- Measure / layout ------------------------------------------------ */
  --wrap: 76rem;
  --measure: 34rem;
  --measure-wide: 44rem;
  --radius: 2px;
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */

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

html {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-text);
  font-size: var(--t-body);
  line-height: var(--lh-body);
  font-feature-settings: "ss01", "cv11";
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-weight: 400;
}

p {
  margin: 0;
}

ul {
  margin: 0;
  padding: 0;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

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

.skip-link {
  position: absolute;
  left: var(--s-4);
  top: var(--s-4);
  transform: translateY(-200%);
  background: var(--ink);
  color: var(--paper);
  padding: var(--s-2) var(--s-4);
  font-size: var(--t-small);
  z-index: 50;
}

.skip-link:focus {
  transform: none;
}

/* --------------------------------------------------------------------------
   Layout primitives
   -------------------------------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--s-6);
}

@media (min-width: 60rem) {
  .wrap {
    padding-inline: var(--s-8);
  }
}

.section {
  padding-block: var(--s-16);
  border-top: 1px solid var(--border-quiet);
}

.section--flush {
  border-top: 0;
}

.section--tight {
  padding-block: var(--s-12);
}

@media (min-width: 60rem) {
  .section {
    padding-block: var(--s-24);
  }
  .section--tight {
    padding-block: var(--s-16);
  }
}

.section--ink {
  background: var(--ink);
  color: var(--paper);
  border-top: 0;
}

.section--ink .eyebrow,
.section--ink .quiet {
  color: #a9a49e;
}

.measure {
  max-width: var(--measure);
}

.measure-wide {
  max-width: var(--measure-wide);
}

.stack > * + * {
  margin-top: var(--s-4);
}

.stack-6 > * + * {
  margin-top: var(--s-6);
}

.stack-8 > * + * {
  margin-top: var(--s-8);
}

/* two-column editorial split: label rail + content */
.split {
  display: grid;
  gap: var(--s-6);
}

@media (min-width: 60rem) {
  .split {
    grid-template-columns: 12rem minmax(0, 1fr);
    gap: var(--s-16);
  }
}

.cols-3 {
  display: grid;
  gap: var(--s-8);
}

@media (min-width: 48rem) {
  .cols-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--s-12);
  }
}

@media (min-width: 72rem) {
  .cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.cols-2 {
  display: grid;
  gap: var(--s-8);
}

@media (min-width: 60rem) {
  .cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--s-16);
  }
}

/* --------------------------------------------------------------------------
   Type components
   -------------------------------------------------------------------------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-quiet);
  line-height: 1.4;
  display: block;
}

.display {
  font-family: var(--font-display);
  font-size: var(--t-h1);
  line-height: var(--lh-tight);
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.h2 {
  font-family: var(--font-display);
  font-size: var(--t-h2);
  line-height: var(--lh-snug);
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.h3 {
  font-family: var(--font-text);
  font-size: var(--t-h3);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.h4 {
  font-family: var(--font-text);
  font-size: var(--t-h4);
  font-weight: 600;
  line-height: 1.4;
}

.lead {
  font-size: var(--t-lead);
  line-height: 1.55;
  color: var(--fg);
}

.quiet {
  color: var(--fg-quiet);
}

.small {
  font-size: var(--t-small);
  line-height: 1.55;
}

.prose p + p {
  margin-top: var(--s-4);
}

.numbered {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  color: var(--accent-strong);
  letter-spacing: 0.1em;
}

/* accent hairline: accent is never the only carrier of meaning */
.accent-rule {
  width: 2.5rem;
  height: 2px;
  background: var(--accent);
  display: block;
}

.hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Links and buttons
   -------------------------------------------------------------------------- */

.link {
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

.link:hover {
  text-decoration-thickness: 2px;
}

.section--ink .link {
  color: var(--paper);
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-text);
  font-size: var(--t-body);
  font-weight: 500;
  text-decoration: none;
  padding: var(--s-3) var(--s-6);
  min-height: 2.75rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  transition: background 120ms ease, color 120ms ease;
}

.cta:hover {
  background: var(--oxide-deep);
  border-color: var(--oxide-deep);
}

.cta--ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}

.cta--ghost:hover {
  background: transparent;
  border-color: var(--ink);
  color: var(--fg);
}

.section--ink .cta {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

.section--ink .cta:hover {
  background: var(--oxide);
  border-color: var(--oxide);
  color: var(--paper);
}

.cta .arrow {
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */

.site-header {
  border-bottom: 1px solid var(--border-quiet);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 30;
}

.site-header__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--s-4);
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  text-decoration: none;
  min-width: 0;
}

.brand__mark {
  flex: none;
  width: 26px;
  height: 26px;
  color: var(--ink);
}

.brand__word {
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1;
  letter-spacing: 0.005em;
}

.nav {
  display: none;
  align-items: center;
  gap: var(--s-6);
}

@media (min-width: 60rem) {
  .nav {
    display: flex;
  }
}

.nav a {
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--fg-muted);
  padding-block: var(--s-2);
  border-bottom: 2px solid transparent;
}

.nav a:hover {
  color: var(--fg);
}

.nav a[aria-current="page"]:not(.nav__cta) {
  color: var(--fg);
  border-bottom-color: var(--accent);
  font-weight: 500;
}

.nav a.nav__cta {
  color: var(--paper);
}

.nav a.nav__cta[aria-current="page"] {
  background: var(--oxide-deep);
  border-color: var(--oxide-deep);
}

.nav__cta {
  margin-left: var(--s-2);
  padding: var(--s-2) var(--s-4);
  min-height: 2.25rem;
  font-size: 0.9375rem;
}

/* mobile nav: a plain disclosure, no scripts required in export */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
  min-height: 2.75rem;
  padding-inline: var(--s-4);
  cursor: pointer;
}

@media (min-width: 60rem) {
  .nav-toggle {
    display: none;
  }
}

.nav-mobile {
  border-top: 1px solid var(--border-quiet);
  padding-block: var(--s-4);
  display: grid;
}

@media (min-width: 60rem) {
  .nav-mobile {
    display: none;
  }
}

.nav-mobile a {
  text-decoration: none;
  padding-block: var(--s-3);
  border-bottom: 1px solid var(--border-quiet);
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 2.75rem;
}

.nav-mobile a[aria-current="page"] {
  font-weight: 600;
}

.nav-mobile a[aria-current="page"]::after {
  content: "current";
  font-family: var(--font-mono);
  font-size: var(--t-label);
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.hero {
  padding-block: var(--s-16) var(--s-16);
}

@media (min-width: 60rem) {
  .hero {
    padding-block: var(--s-24) var(--s-24);
  }
}

.hero__headline {
  max-width: 20ch;
}

.hero__sub {
  max-width: 46ch;
}

/* --------------------------------------------------------------------------
   Cards / lists
   -------------------------------------------------------------------------- */

.point {
  border-top: 1px solid var(--border);
  padding-top: var(--s-4);
}

.point__index {
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: 0.12em;
  color: var(--accent-strong);
  display: block;
  margin-bottom: var(--s-4);
}

.list {
  list-style: none;
}

.list > li {
  border-top: 1px solid var(--border-quiet);
  padding-block: var(--s-4);
  display: grid;
  grid-template-columns: 1.25rem minmax(0, 1fr);
  gap: var(--s-3);
}

.list > li::before {
  content: "\00B7";   /* middle dot. Never an em-dash: this is rendered content. */
  font-family: var(--font-mono);
  color: var(--accent);
  line-height: var(--lh-body);
}

.list > li:last-child {
  border-bottom: 1px solid var(--border-quiet);
}

.pullquote {
  border-left: 2px solid var(--accent);
  padding: var(--s-2) 0 var(--s-2) var(--s-6);
  font-family: var(--font-display);
  font-size: var(--t-h3);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */

.form {
  max-width: 36rem;
}

.field + .field {
  margin-top: var(--s-6);
}

.field label,
.legend {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--t-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: var(--s-2);
}

.req {
  color: var(--accent-strong);
  font-family: var(--font-mono);
}

.input,
.textarea {
  width: 100%;
  font-family: inherit;
  font-size: var(--t-body);
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--s-3) var(--s-4);
  min-height: 2.875rem;
}

.textarea {
  min-height: 9rem;
  resize: vertical;
  line-height: 1.5;
}

.input::placeholder,
.textarea::placeholder {
  color: var(--fg-quiet);
}

.input:hover,
.textarea:hover {
  border-color: var(--neutral-2);
}

.checkbox-row {
  display: grid;
  grid-template-columns: 1.125rem minmax(0, 1fr);
  gap: var(--s-3);
  align-items: start;
}

.checkbox-row input {
  width: 1.125rem;
  height: 1.125rem;
  margin-top: 0.28rem;
  accent-color: var(--oxide);
}

.checkbox-row label {
  font-family: var(--font-text);
  font-size: var(--t-small);
  text-transform: none;
  letter-spacing: 0;
  color: var(--fg);
  margin: 0;
  line-height: 1.55;
}

.turnstile {
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: #f2efea;
  padding: var(--s-4);
  display: flex;
  align-items: center;
  gap: var(--s-3);
  color: var(--fg-muted);
  font-size: var(--t-small);
  min-height: 4.125rem;
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.note {
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  background: var(--oxide-tint);
  padding: var(--s-4) var(--s-6);
  border-radius: var(--radius);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: var(--s-12);
  margin-top: var(--s-8);
}

.footer-grid {
  display: grid;
  gap: var(--s-8);
}

@media (min-width: 60rem) {
  .footer-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: var(--s-16);
  }
}

.footer-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3) var(--s-6);
}

.footer-links a {
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--fg-muted);
}

.footer-links a:hover {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */

.vh {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition-duration: 0.01ms !important;
  }
}

/* ---- Legal pages ----------------------------------------------------------
   Long-form policy text. Rules, not boxes; no oxide except the page hairline. */
.prose.legal h2{font-family:var(--font-display);font-size:var(--t-h2);margin:var(--s-10) 0 var(--s-3);line-height:1.2}
.prose.legal h2:first-child{margin-top:0}
.prose.legal h3{font-size:var(--t-h3);font-weight:600;margin:var(--s-8) 0 var(--s-2)}
.prose.legal p{margin:0 0 var(--s-4);max-width:var(--measure)}
.prose.legal ul{margin:0 0 var(--s-4) 0;padding:0;list-style:none;max-width:var(--measure)}
.prose.legal li{position:relative;padding-left:var(--s-5);margin-bottom:var(--s-2)}
.prose.legal li::before{content:"\00B7";position:absolute;left:0;color:var(--accent);font-family:var(--font-mono)}
.prose.legal strong{font-weight:600}
.prose.legal a{color:var(--accent-strong)}
.prose.legal hr{border:0;border-top:1px solid var(--border);margin:var(--s-8) 0}