/*
 * ezpds marketing site — "The Sealed Credential" (Obsign) with a Brass Console
 * (Custos) register scope.
 *
 * Tokens are forked from the two live app token layers:
 *   apps/identity-wallet/src/lib/styles/tokens.css   (Obsign — the default register)
 *   apps/admin-companion/src/lib/styles/tokens.css   (Brass Console — .register-custos)
 * Values must not drift from those files; when a brief changes, re-fork.
 *
 * Web-scale derivation: the app scales are mobile-restrained (display 1.75rem).
 * The web extends the same ~1.2 modular scale upward two steps for hero/section
 * moments (2.1rem, 2.5rem) — fixed rem steps behind a media query, never fluid
 * clamp() (the briefs' fixed-rem doctrine).
 *
 * Accessibility bar: WCAG 2.2 AAA targets; status never color alone; visible
 * focus ring on every interactive element; prefers-reduced-motion honored.
 */

/* ── Self-hosted brand fonts (no runtime CDN) ─────────────────────────── */
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/PublicSans-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/PublicSans-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/PublicSans-SemiBold.woff2') format('woff2');
}
@font-face {
  font-family: 'Public Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/PublicSans-Bold.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-Regular.woff2') format('woff2');
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-Medium.woff2') format('woff2');
}
@font-face {
  font-family: 'Libre Caslon Display';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/LibreCaslonDisplay-Regular.ttf') format('truetype');
}

/* ── Tokens: Obsign, "The Sealed Credential" (default register) ───────── */
:root {
  /* The wax seal is a physical object; its gold keeps its color at night — the
     Same-Seal Rule, so `primary` / `primary-deep` / `on-color` are appearance-
     invariant. Every other color is a light-dark() pair forked verbatim from
     apps/identity-wallet/src/lib/styles/tokens.css; the Obsign pages follow the
     system appearance (see `color-scheme` in Base). Raised surfaces step DARKER
     than the page in light and LIGHTER in dark (the Inverted-Elevation Rule),
     aubergine lifts to lavender, status pairs invert. AAA holds in both — the
     dark pairings are verified, never eyeballed. */
  --color-primary: oklch(0.46 0.105 62);
  --color-primary-deep: oklch(0.38 0.09 60);
  --color-accent: light-dark(oklch(0.34 0.1 330), oklch(0.76 0.07 330));
  --color-accent-deep: light-dark(oklch(0.28 0.09 330), oklch(0.68 0.08 330));
  --color-seal-pale: light-dark(oklch(0.92 0.055 80), oklch(0.32 0.07 65));
  --color-on-color: oklch(0.99 0.005 80);

  --color-bg: light-dark(oklch(1 0 0), oklch(0.18 0.012 60));
  --color-surface: light-dark(oklch(0.975 0.004 75), oklch(0.23 0.012 60));
  --color-surface-sunk: light-dark(oklch(0.955 0.005 75), oklch(0.205 0.012 60));
  --color-ink: light-dark(oklch(0.23 0.012 60), oklch(0.96 0.004 75));
  --color-ink-soft: light-dark(oklch(0.31 0.012 60), oklch(0.85 0.006 70));
  --color-muted: light-dark(oklch(0.42 0.012 60), oklch(0.7 0.008 65));
  --color-line: light-dark(oklch(0.9 0.004 75), oklch(0.32 0.012 60));

  --color-safe: light-dark(oklch(0.4 0.1 150), oklch(0.82 0.1 150));
  --color-safe-surface: light-dark(oklch(0.95 0.045 150), oklch(0.27 0.05 150));
  --color-warning: light-dark(oklch(0.42 0.1 60), oklch(0.84 0.095 65));
  --color-warning-surface: light-dark(oklch(0.95 0.055 75), oklch(0.28 0.05 60));
  --color-critical: light-dark(oklch(0.44 0.16 25), oklch(0.82 0.095 25));
  --color-critical-surface: light-dark(oklch(0.95 0.045 25), oklch(0.26 0.055 25));
  --color-expired: light-dark(oklch(0.42 0.02 25), oklch(0.78 0.012 25));
  --color-expired-surface: light-dark(oklch(0.95 0.004 25), oklch(0.25 0.004 25));

  --color-focus-ring: var(--color-accent);

  --font-display: 'Libre Caslon Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Public Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* App scale + two web extension steps (~1.2 ratio, fixed rem). */
  --text-hero: 2.5rem;
  --leading-hero: 1.12;
  --text-display: 2.1rem;
  --leading-display: 1.15;
  --text-headline: 1.375rem;
  --leading-headline: 1.25;
  --text-title: 1.125rem;
  --leading-title: 1.3;
  --text-body: 1rem;
  --leading-body: 1.6;
  --text-label: 0.8125rem;
  --leading-label: 1.3;
  --text-data: 0.875rem;
  --leading-data: 1.55;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 80px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-base: 180ms;
}

/* ── Tokens: Custos, "The Brass Console" (scoped register) ────────────── */
.register-custos {
  --color-primary: oklch(0.72 0.12 80);
  --color-primary-hover: oklch(0.78 0.13 82);
  --color-primary-deep: oklch(0.7 0.13 78);
  --color-on-primary: oklch(0.16 0.012 250);
  --color-on-color: oklch(0.96 0.006 250);

  --color-bg: oklch(0.18 0.012 250);
  --color-surface: oklch(0.22 0.014 250);
  --color-surface-sunk: oklch(0.26 0.015 250);
  --color-ink: oklch(0.95 0.006 250);
  --color-ink-soft: oklch(0.82 0.008 250);
  --color-muted: oklch(0.73 0.01 250);
  --color-line: oklch(0.34 0.012 250);

  --color-safe: oklch(0.82 0.1 150);
  --color-safe-surface: oklch(0.26 0.04 150);
  --color-warning: oklch(0.82 0.1 50);
  --color-warning-surface: oklch(0.26 0.04 50);
  --color-critical: oklch(0.82 0.1 25);
  --color-critical-surface: oklch(0.26 0.04 25);

  /* Gold focus ring on the dark ground (the admin app's convention). */
  --color-focus-ring: var(--color-primary);

  /* Brass Console radii run a step tighter — a precision instrument. */
  --radius-md: 6px;
  --radius-lg: 10px;

  /* Fixed dark register: resolve any inherited light-dark() token to its dark
     side locally, so the Custos band stays slate even on a light Obsign page. */
  color-scheme: dark;
  background: var(--color-bg);
  color: var(--color-ink);
}

/* ── Base ─────────────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Appearance. The Obsign pages follow the system (light-dark() tokens resolve
   against this); the Brass Console is a fixed dark register that never follows
   the system. The :has() is keyed to the class on <body> so the nested Custos
   CTA band on the Obsign page doesn't force the whole light page dark; UA chrome
   (scrollbar, overscroll gutter) tracks the same value. */
:root {
  color-scheme: light dark;
}
:root:has(body.register-custos) {
  color-scheme: dark;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* The visible focus ring is a security feature, never removed. */
:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover {
  color: var(--color-accent-deep);
}
.register-custos a {
  color: var(--color-primary);
}
.register-custos a:hover {
  color: var(--color-primary-hover);
}

code,
.mono {
  font-family: var(--font-mono);
  font-size: var(--text-data);
  line-height: var(--leading-data);
  /* Break at natural boundaries first; force a break only when a literal truly
     can't fit (never truncate a key silently, never split short identifiers). */
  overflow-wrap: break-word;
}

.container {
  max-width: 66rem;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.prose {
  max-width: 68ch;
}

section {
  padding: var(--space-3xl) 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  padding: var(--space-sm) var(--space-md);
  z-index: 10;
}
.skip-link:focus-visible {
  left: var(--space-md);
  top: var(--space-md);
}

/* ── Header / nav ─────────────────────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--color-line);
  background: var(--color-bg);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-ink);
  font-weight: 600;
  font-size: var(--text-title);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--color-ink-soft);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--space-sm) var(--space-xs);
  white-space: nowrap;
}
.site-nav a:hover {
  color: var(--color-ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}
/* Phone widths: the nav wraps onto its own full-width row under the brand —
   links stay whole (nowrap above) and none can be pushed off-viewport. */
@media (max-width: 640px) {
  .site-header .container {
    flex-wrap: wrap;
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
  }
  .site-nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: var(--space-xs) var(--space-md);
  }
}

/* ── The seal mark (the wax seal from app-icon.svg, stamped via <use>) ─── */
.seal-sprite {
  position: absolute;
  width: 0;
  height: 0;
}
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.seal svg {
  display: block;
  width: 100%;
  height: 100%;
}
.seal-sm {
  width: 32px;
  height: 32px;
}
.seal-lg {
  width: 72px;
  height: 72px;
}

/* ── Hero ─────────────────────────────────────────────────────────────── */
.hero {
  padding: var(--space-3xl) 0;
  text-align: left;
}
.hero h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--text-hero);
  line-height: var(--leading-hero);
  max-width: 22ch;
  margin: var(--space-lg) 0 var(--space-md);
  text-wrap: balance;
}
.hero .lede {
  font-size: var(--text-title);
  line-height: 1.55;
  color: var(--color-ink-soft);
  max-width: 58ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}
.hero-honesty {
  margin-top: var(--space-lg);
  font-size: var(--text-label);
  color: var(--color-muted);
}

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-height: 44px;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--duration-base) var(--ease-standard);
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-on-color);
}
.btn-primary:hover {
  background: var(--color-primary-deep);
  color: var(--color-on-color);
}
.register-custos .btn-primary {
  color: var(--color-on-primary);
}
.register-custos .btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-on-primary);
}
/* The register's brass link color must not leak into a ghost button's label
   (`.register-custos a` outranks `.btn-secondary`). A secondary button stays
   neutral ink — matching the Obsign secondary and the admin Button primitive
   this register is forked from — so the primary/secondary hierarchy holds. */
.register-custos .btn-secondary,
.register-custos .btn-secondary:hover {
  color: var(--color-ink);
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-ink);
  border-color: var(--color-line);
}
.btn-secondary:hover {
  background: var(--color-surface-sunk);
  color: var(--color-ink);
}

/* ── Sections ─────────────────────────────────────────────────────────── */
.section-alt {
  background: var(--color-surface);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}
h2 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: -0.005em;
  max-width: 28ch;
  margin-bottom: var(--space-md);
  text-wrap: balance;
}
h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--text-title);
  line-height: var(--leading-title);
  margin-bottom: var(--space-sm);
  text-wrap: balance;
}
.section-intro {
  color: var(--color-ink-soft);
  max-width: 68ch;
  margin-bottom: var(--space-xl);
}
.section-intro p + p,
.prose p + p {
  margin-top: var(--space-md);
}
/* Long-form copy: let the browser avoid short last-line orphans. */
.hero .lede,
.section-intro,
.prose p,
.answers p,
.card p {
  text-wrap: pretty;
}

/* ── Waitlist form ────────────────────────────────────────────────────── */
.waitlist-form {
  max-width: 620px;
}
.waitlist-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}
@media (max-width: 640px) {
  .waitlist-fields {
    grid-template-columns: 1fr;
  }
}
.waitlist-form .field label {
  display: block;
  font-size: var(--text-label);
  line-height: var(--leading-label);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}
.waitlist-form .field-req {
  font-weight: 400;
  color: var(--color-muted);
}
.waitlist-form input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: var(--text-body);
  color: var(--color-ink);
  background: var(--color-bg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
}
.waitlist-form input::placeholder {
  color: var(--color-muted);
}
.waitlist-form button[disabled] {
  opacity: 0.6;
  cursor: default;
}
/* Status is never color alone: each state pairs its color with a glyph + text. */
.form-status {
  margin-top: var(--space-md);
  font-size: var(--text-data);
  line-height: var(--leading-data);
  min-height: 1.4em;
}
.form-status.is-success {
  color: var(--color-safe);
  font-weight: 600;
}
.form-status.is-error {
  color: var(--color-critical);
  font-weight: 600;
}
.waitlist-privacy {
  margin-top: var(--space-lg);
  max-width: 68ch;
  font-size: var(--text-label);
  line-height: var(--leading-body);
  color: var(--color-muted);
  text-wrap: pretty;
}

/* ── Cards (flat at rest: parchment + hairline, no shadow) ────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr); /* a deliberate 2×2 — no orphan card */
  gap: var(--space-lg);
}
@media (max-width: 720px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.section-alt .card {
  background: var(--color-bg);
}
.card p {
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
}
.card .card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-seal-pale);
  color: var(--color-ink);
  margin-bottom: var(--space-md);
}

/* ── Key-fact panel (mono literal truth) ──────────────────────────────── */
.keyfacts {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-width: 34rem;
}
.keyfacts dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-sm) var(--space-lg);
  align-items: baseline;
}
.keyfacts dt {
  font-family: var(--font-mono);
  font-size: var(--text-data);
  color: var(--color-muted);
  white-space: nowrap;
}
.keyfacts dd {
  font-family: var(--font-mono);
  font-size: var(--text-data);
  color: var(--color-ink);
  overflow-wrap: break-word; /* prose values — break-all is only for literal keys */
}

/* ── Status badges (illustration of the wallet's urgency system) ──────── */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: var(--text-label);
  font-weight: 500;
  line-height: var(--leading-label);
}
.badge .glyph {
  font-family: var(--font-mono);
}
.badge-safe {
  background: var(--color-safe-surface);
  color: var(--color-safe);
}
.badge-warning {
  background: var(--color-warning-surface);
  color: var(--color-warning);
}
.badge-critical {
  background: var(--color-critical-surface);
  color: var(--color-critical);
}
.badge-expired {
  background: var(--color-expired-surface);
  color: var(--color-expired);
}
figure.badge-figure figcaption {
  margin-top: var(--space-md);
  font-size: var(--text-label);
  color: var(--color-muted);
  max-width: 60ch;
}

/* ── Plain-answers list ───────────────────────────────────────────────── */
.answers {
  display: grid;
  gap: var(--space-lg);
  max-width: 68ch;
}
.answers > div {
  border-top: 1px solid var(--color-line);
  padding-top: var(--space-lg);
}
.answers h3 {
  margin-bottom: var(--space-xs);
}
.answers p {
  color: var(--color-ink-soft);
}

/* ── Custos band / Brass Console surfaces ─────────────────────────────── */
.register-custos section {
  padding: var(--space-3xl) 0;
}
/* The Custos CTA on the Obsign page is a band (a <div>, not the page <body>).
   In light the register shift is carried by the lightness jump (white → slate);
   in dark the warm Obsign ground and the cool Custos slate share a lightness, so
   a hairline top edge keeps the "different room" boundary legible in both. */
.register-custos:not(body) {
  border-top: 1px solid var(--color-line);
}
.prompt {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1.625rem;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--color-ink);
}
.prompt-glyph {
  color: var(--color-primary);
}
.brand-mono {
  font-family: var(--font-mono);
  font-weight: 400;
}
/* Grotesk hero heading for the Brass Console register — outranks the default
   register's `.hero h1` signet rule (mono, not serif, is the signet there). */
.hero h1.hero-headline {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: -0.005em;
  max-width: 26ch;
  margin: var(--space-md) 0;
}
.section-tight {
  padding-top: 0;
}
.footnote {
  margin-top: var(--space-lg);
  font-size: var(--text-label);
  line-height: var(--leading-label);
  color: var(--color-muted);
}
.register-custos h2,
.register-custos h3 {
  color: var(--color-ink);
}
.register-custos .section-intro,
.register-custos p {
  color: var(--color-ink-soft);
}

/* ls -l feature rows: dense, aligned, legible */
.feature-rows {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}
.feature-rows > div {
  display: grid;
  grid-template-columns: 11rem 1fr;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  align-items: baseline;
}
.feature-rows > div + div {
  border-top: 1px solid var(--color-line);
}
.feature-rows dt {
  font-family: var(--font-mono);
  font-size: var(--text-data);
  color: var(--color-primary);
}
.feature-rows dd {
  color: var(--color-ink-soft);
  font-size: 0.9375rem;
}

/* CodeOutput-style block */
.code-output {
  background: var(--color-surface-sunk);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-data);
  line-height: 1.7;
  color: var(--color-ink);
  overflow-x: auto;
}
.code-output .out-dim {
  color: var(--color-muted);
}
.code-output .out-glyph {
  color: var(--color-primary);
}

/* ── Footer ───────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-line);
  padding: var(--space-2xl) 0;
  font-size: var(--text-label);
  color: var(--color-muted);
}
.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-2xl);
  justify-content: space-between;
  align-items: baseline;
}
.site-footer a {
  color: var(--color-muted);
}
.site-footer a:hover {
  color: var(--color-ink);
}
.site-footer .foot-brands {
  display: flex;
  gap: var(--space-lg);
}
.site-footer .foot-privacy {
  flex-basis: 100%;
  margin-top: var(--space-sm);
}

/* ── Small screens: step the extended scale down (fixed steps, no clamp) ── */
@media (max-width: 640px) {
  :root {
    --text-hero: 2rem;
    --text-display: 1.75rem;
    --space-3xl: 56px;
  }
  .feature-rows > div {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }
  .keyfacts dl {
    grid-template-columns: 1fr;
    gap: 2px;
  }
  .keyfacts dt {
    margin-top: var(--space-sm);
  }
}

/* ── Motion: state only, and only when the user allows it ─────────────── */
/* In-page nav (How it works / Plain answers / Run it) glides rather than jumps,
   but only for users who haven't asked for reduced motion. */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}