/* Public website styles. Brand colours come from brand.css (generated from site/brand.json).
   Plain CSS: no framework, no web fonts, no images except the small SVG mark. */

:root {
  /* Derived from the brand palette for accessible contrast. See docs/website/DESIGN.md. */
  --color-text: var(--color-navy);
  --color-muted: var(--color-slate);
  --color-link: var(--color-teal-ink);
  --color-surface: var(--color-white);
  --color-bg: var(--color-ivory);
  --color-line: #DEDAD0;
  --color-line-strong: #C9C4B7;
  --color-on-dark: var(--color-ivory);
  --color-on-dark-muted: #C8CDD6;
  --color-error: #A3271F;
  --color-error-bg: #FBEDEB;
  --color-success: #0E6F64;
  --color-success-bg: #E5F3F0;
  --color-focus: var(--color-teal-ink);

  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --radius: 6px;
  --radius-small: 4px;
  --max-width: 1120px;
  --gutter: 16px;
}

* {
  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(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  overflow-wrap: break-word;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-link);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-navy);
}

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

h1,
h2,
h3 {
  margin: 0 0 0.5em;
  line-height: 1.15;
  letter-spacing: -0.015em;
  font-weight: 750;
}

h1 {
  font-size: clamp(2.3rem, 6.2vw, 4rem);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h2 {
  font-size: clamp(1.65rem, 3.6vw, 2.4rem);
  letter-spacing: -0.025em;
}

h3 {
  font-size: 1.1rem;
}

p {
  margin: 0 0 1em;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  padding: 0.05em 0.35em;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.narrow {
  max-width: 800px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 20;
  background: var(--color-navy);
  color: var(--color-on-dark);
  padding: 8px 14px;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 12px;
  color: var(--color-on-dark);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-navy);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand:hover {
  color: var(--color-navy);
}

.brand-mark {
  display: block;
  flex: 0 0 auto;
}

.brand-name {
  font-size: 1rem;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 20px;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--color-navy);
  text-decoration: none;
  padding: 6px 0;
}

.site-nav a:hover {
  text-decoration: underline;
}

.site-nav .nav-cta {
  background: var(--color-navy);
  color: var(--color-on-dark);
  padding: 7px 14px;
  border-radius: var(--radius);
  font-weight: 600;
}

.site-nav .nav-cta:hover {
  background: #0B1428;
  color: var(--color-on-dark);
  text-decoration: none;
}

/* ---------- buttons ---------- */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 650;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease;
}

.button-primary {
  background: var(--color-navy);
  color: var(--color-on-dark);
}

.button-primary:hover {
  background: #0B1428;
  color: var(--color-on-dark);
}

.button-secondary {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.button-secondary:hover {
  background: var(--color-surface);
  color: var(--color-navy);
}

.button-block {
  width: 100%;
}

.button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* ---------- chips ---------- */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1;
  padding: 5px 8px;
  border-radius: var(--radius-small);
  border: 1px solid var(--color-line-strong);
  background: var(--color-surface);
  color: var(--color-navy);
  white-space: nowrap;
}

.chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.chip-working-in-development {
  color: var(--color-teal-ink);
  border-color: var(--color-teal);
}

.chip-working-in-development::before {
  background: var(--color-teal);
}

.chip-planned {
  background: var(--color-amber);
  border-color: var(--color-amber);
  color: var(--color-navy);
}

.chip-exploring {
  color: var(--color-slate);
  background: transparent;
}

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

.hero {
  padding: 56px 0 64px;
  border-bottom: 1px solid var(--color-line);
}

.hero-grid {
  display: grid;
  gap: 40px;
  grid-template-columns: 1fr;
  align-items: start;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-navy);
  border: 1px solid var(--color-line-strong);
  background: var(--color-surface);
  border-radius: var(--radius-small);
  padding: 6px 10px;
  margin-bottom: 22px;
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-amber);
}

.tagline {
  font-size: clamp(1.2rem, 2.6vw, 1.5rem);
  font-weight: 650;
  color: var(--color-teal-ink);
  letter-spacing: -0.01em;
  margin-bottom: 18px;
}

.lead {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  color: var(--color-muted);
  max-width: 40em;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 14px;
}

.hero-note {
  font-size: 0.92rem;
  color: var(--color-muted);
  margin: 0;
}

.status-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-line-strong);
  border-top: 4px solid var(--color-teal);
  border-radius: var(--radius);
  padding: 20px;
}

.status-panel-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 12px;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 12px;
  margin-bottom: 4px;
}

.status-panel-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 700;
  margin: 0;
}

.status-panel-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-muted);
  margin: 0;
}

.status-rows {
  list-style: none;
  margin: 0;
  padding: 0;
}

.status-rows li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.97rem;
}

.status-panel-foot {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 14px 0 0;
}

/* ---------- sections ---------- */

.section {
  padding: 72px 0;
}

.section-tight {
  padding: 8px 0 24px;
}

.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.section-dark {
  background: var(--color-navy);
  color: var(--color-on-dark);
}

.section-dark .section-kicker {
  color: var(--color-amber);
}

.section-dark .section-intro,
.section-dark p {
  color: var(--color-on-dark-muted);
}

.section-dark h2,
.section-dark h3 {
  color: var(--color-on-dark);
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-teal-ink);
  margin-bottom: 10px;
}

.section-intro {
  color: var(--color-muted);
  max-width: 44em;
  margin-bottom: 32px;
}

.callout {
  margin: 28px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--color-amber);
  background: var(--color-bg);
  max-width: 44em;
}

/* Grids share one quiet card treatment: hairline borders, small radius. */
.problem-grid,
.capability-grid,
.principle-grid,
.step-grid {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.problem-grid li,
.capability,
.principle,
.audience-card,
.status-column {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  padding: 22px;
}

.section-alt .capability,
.section-alt .status-column {
  background: var(--color-bg);
}

.problem-grid p,
.capability p,
.principle p,
.audience-card p,
.status-column p {
  color: var(--color-muted);
  margin: 0;
}

.capability-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 8px;
}

.capability-head h3 {
  margin: 0;
}

.step {
  border-top: 1px solid rgba(246, 244, 239, 0.25);
  padding-top: 18px;
}

.step-number {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-teal);
  margin-bottom: 10px;
}

.step p {
  margin: 0;
}

.status-columns,
.audience-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin-top: 28px;
}

.status-column h3 {
  margin-bottom: 12px;
}

/* ---------- waitlist ---------- */

.waitlist-grid {
  display: grid;
  gap: 32px;
  grid-template-columns: 1fr;
  align-items: start;
}

.why-box {
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-bg);
  padding: 18px 20px;
}

.why-box p {
  color: var(--color-muted);
  margin-bottom: 0.6em;
}

.why-box p:last-child {
  margin-bottom: 0;
}

.waitlist-form {
  background: var(--color-surface);
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius);
  padding: 24px;
}

.field {
  margin: 0 0 20px;
  padding: 0;
  border: 0;
  min-width: 0;
}

.field label,
.field legend {
  display: block;
  font-weight: 650;
  margin-bottom: 6px;
  padding: 0;
}

.field-hint {
  font-weight: 400;
  font-size: 0.88rem;
  color: var(--color-muted);
}

.help {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 6px 0 0;
}

input[type="email"],
input[type="text"],
select,
textarea {
  width: 100%;
  min-height: 46px;
  font: inherit;
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius);
  padding: 10px 12px;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-teal-ink);
}

[aria-invalid="true"] {
  border-color: var(--color-error);
}

.field-error {
  color: var(--color-error);
  font-size: 0.9rem;
  font-weight: 600;
  margin: 6px 0 0;
}

.checkbox-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: 1fr;
  margin-top: 10px;
}

.checkbox-grid label,
.consent label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-weight: 400;
  cursor: pointer;
}

.checkbox-grid input,
.consent input {
  width: 18px;
  height: 18px;
  margin-top: 4px;
  flex: 0 0 auto;
  accent-color: var(--color-navy);
}

.honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  margin: 16px 0 0;
  font-weight: 600;
  min-height: 1.6em;
}

.form-status.is-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  padding: 12px 14px;
  border-radius: var(--radius);
}

.form-status.is-error {
  background: var(--color-error-bg);
  color: var(--color-error);
  padding: 12px 14px;
  border-radius: var(--radius);
}

/* ---------- FAQ ---------- */

.faq-preview-list {
  border-top: 1px solid var(--color-line-strong);
}

.faq-preview {
  border-bottom: 1px solid var(--color-line-strong);
  padding: 4px 0;
}

.faq-preview summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
}

.faq-preview summary::-webkit-details-marker {
  display: none;
}

.faq-preview summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--color-teal-ink);
}

.faq-preview[open] summary::after {
  content: "\2212";
}

.faq-preview summary h3 {
  margin: 0;
  font-size: 1.12rem;
}

.faq-preview p {
  color: var(--color-muted);
}

.faq-short {
  color: var(--color-text) !important;
  font-weight: 600;
}

.more-link {
  margin-top: 24px;
  font-weight: 600;
}

.page-hero {
  padding: 56px 0 32px;
}

.page-hero .meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-muted);
}

.toc-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.faq-toc {
  margin: 0;
  padding-left: 1.4em;
  columns: 1;
  font-size: 0.98rem;
}

.faq-toc li {
  margin-bottom: 6px;
  break-inside: avoid;
}

.faq-list {
  padding-bottom: 24px;
}

.faq-item {
  border-top: 1px solid var(--color-line-strong);
  padding: 32px 0;
  scroll-margin-top: 90px;
}

.faq-item h2 {
  font-size: clamp(1.3rem, 2.8vw, 1.65rem);
}

.faq-item p {
  color: var(--color-muted);
}

.faq-links {
  border-left: 3px solid var(--color-teal);
  padding-left: 14px;
  margin-top: 8px;
}

.faq-links-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 4px;
  color: var(--color-text) !important;
}

.faq-links ul {
  margin: 0;
  padding-left: 1.1em;
}

.cta-band {
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: 28px;
}

/* ---------- long-form pages ---------- */

.prose {
  padding-bottom: 72px;
}

.prose section {
  border-top: 1px solid var(--color-line-strong);
  padding: 28px 0 8px;
}

.prose h2 {
  font-size: clamp(1.3rem, 2.8vw, 1.6rem);
}

.prose p,
.prose li {
  color: var(--color-muted);
}

.prose strong {
  color: var(--color-text);
}

.principle-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 12px;
}

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

.site-footer {
  background: var(--color-navy);
  color: var(--color-on-dark);
  padding: 48px 0;
}

.footer-inner {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
}

.site-footer .brand,
.site-footer .brand:hover {
  color: var(--color-on-dark);
}

.footer-tagline {
  color: var(--color-on-dark-muted);
  margin: 10px 0 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-nav a {
  color: var(--color-on-dark);
}

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

.footer-note {
  font-size: 0.88rem;
  color: var(--color-on-dark-muted);
  margin-bottom: 0.5em;
}

/* ---------- larger screens ---------- */

@media (min-width: 640px) {
  .problem-grid,
  .principle-grid,
  .capability-grid,
  .status-columns,
  .audience-grid,
  .checkbox-grid {
    grid-template-columns: 1fr 1fr;
  }

  .waitlist-form {
    padding: 32px;
  }

  .faq-toc {
    columns: 2;
    column-gap: 32px;
  }
}

@media (min-width: 900px) {
  .hero {
    padding: 88px 0 96px;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 56px;
  }

  .problem-grid,
  .step-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .status-columns {
    grid-template-columns: repeat(3, 1fr);
  }

  .waitlist-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 56px;
  }

  .footer-inner {
    grid-template-columns: 1.4fr 1fr;
  }

  .footer-notes {
    grid-column: 1 / -1;
    border-top: 1px solid rgba(246, 244, 239, 0.2);
    padding-top: 20px;
  }
}

@media (max-width: 520px) {
  /* The wrapped header is tall on phones, so it scrolls away instead of covering the page. */
  .site-header {
    position: static;
  }

  .site-nav {
    width: 100%;
    gap: 2px 16px;
  }

  .site-nav .nav-cta {
    margin-left: auto;
  }

  .status-rows li {
    align-items: flex-start;
  }
}