/**
 * Ahura "Quiet Proof" — marketing site stylesheet.
 *
 * Plain CSS port of the design system that lives in the product apps
 * (credstudio/apps/web/packages/ui/src/tokens.css). Token VALUES are copied
 * verbatim so the marketing site and the applications are visually identical.
 *
 * No build step, no framework: these pages are served straight off disk by
 * nginx. Marketing is static; the products are Next.js. That boundary is
 * deliberate -- see infra/docs/gtm/01-website-relaunch.md.
 *
 * The one rule that carries the whole brand: anything a stranger could verify
 * -- an ID, a hash, a timecode, a count -- renders in tabular mono (.mono).
 * That is the visual argument for a credentialing company.
 */

/* ---------------------------------------------------------------- tokens */
:root,
[data-theme="light"] {
  --bg: #FCFCFA;
  --surface: #FFFFFF;
  --elevated: #F6F7F5;

  --ink: #15171A;
  --ink-2: #5B6168;
  --hairline: #E6E8E4;

  --trust: #0E6E4E;
  --trust-bg: #E7F2EC;

  --evidence: #9A5B12;
  --evidence-bg: #F6EEDF;

  --danger: #B4232A;
  --warn: #B5790A;

  --shadow-sheet: 0 8px 32px rgba(0, 0, 0, 0.08);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);

  --radius-control: 12px;
  --radius-card: 18px;
  --radius-hero: 24px;

  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: Newsreader, ui-serif, Georgia, "Times New Roman", serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --maxw: 1180px;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0C0F14;
  --surface: #11151C;
  --elevated: #171C25;
  --ink: #F2F4F1;
  --ink-2: #9AA1A8;
  --hairline: #252B34;
  --trust: #3FBE8A;
  --trust-bg: #10271E;
  --evidence: #D9A35B;
  --evidence-bg: #2A2113;
  --danger: #F0888C;
  --warn: #E2B45A;
  --shadow-sheet: 0 8px 32px rgba(0, 0, 0, 0.45);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0C0F14;
    --surface: #11151C;
    --elevated: #171C25;
    --ink: #F2F4F1;
    --ink-2: #9AA1A8;
    --hairline: #252B34;
    --trust: #3FBE8A;
    --trust-bg: #10271E;
    --evidence: #D9A35B;
    --evidence-bg: #2A2113;
    --danger: #F0888C;
    --warn: #E2B45A;
    --shadow-sheet: 0 8px 32px rgba(0, 0, 0, 0.45);
    color-scheme: dark;
  }
}

/* ----------------------------------------------------------------- base */
*, *::before, *::after { box-sizing: border-box; }
* { border-color: var(--hairline); }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
}

p { margin: 0; }
img { max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* Verifiable values: tabular mono, everywhere, always. */
.mono, code, kbd, samp, pre {
  font-family: var(--font-mono);
  font-feature-settings: "tnum", "ss01";
  font-variant-numeric: tabular-nums;
}

:focus-visible {
  outline: 2px solid var(--trust);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.skip {
  position: absolute; left: -9999px;
  background: var(--surface); color: var(--ink);
  padding: 12px 18px; border-radius: var(--radius-control); z-index: 200;
}
.skip:focus { left: 16px; top: 16px; }

/* ------------------------------------------------------------------- nav */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--hairline);
}
.nav-in {
  max-width: var(--maxw); margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; gap: 28px;
}
.brand {
  font-family: var(--font-serif); font-size: 21px; font-weight: 500;
  letter-spacing: -0.02em; white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 26px; margin-left: auto; }
.nav-links a, .navbtn {
  font-size: 15px; color: var(--ink-2);
  background: none; border: 0; padding: 0; cursor: pointer;
  font-family: inherit;
}
.nav-links a:hover, .navbtn:hover { color: var(--ink); }

/* dropdown */
.menu { position: relative; }
.menu-panel {
  position: absolute; top: calc(100% + 12px); left: 50%; transform: translateX(-50%);
  min-width: 250px; background: var(--surface);
  border: 1px solid var(--hairline); border-radius: var(--radius-card);
  box-shadow: var(--shadow-sheet); padding: 8px;
  opacity: 0; visibility: hidden; transition: opacity 160ms var(--ease);
}
/* Invisible hover bridge across the 12px gap between the button and the panel.
   Without it the pointer crosses unhovered space on the way down, mouseleave
   fires on .menu, and the menu closes before you can reach an item. */
.menu-panel::before {
  content: ""; position: absolute; left: 0; right: 0;
  top: -14px; height: 14px;
}
.menu[data-open="true"] .menu-panel { opacity: 1; visibility: visible; }
.menu-panel a {
  display: block; padding: 11px 13px; border-radius: 10px;
  color: var(--ink); font-size: 15px;
}
.menu-panel a:hover { background: var(--elevated); text-decoration: none; }
.menu-panel .sub {
  display: block; font-size: 13px; color: var(--ink-2); margin-top: 2px;
}

/* ---------------------------------------------------------------- button */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius-control);
  font-size: 16px; font-weight: 500; font-family: inherit;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 160ms var(--ease), background 160ms var(--ease);
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--trust); color: #fff; }
[data-theme="dark"] .btn-primary { color: #06130E; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .btn-primary { color: #06130E; }
}
.btn-secondary { background: var(--surface); color: var(--ink); border-color: var(--hairline); }
.btn-secondary:hover { background: var(--elevated); }
.btn-sm { padding: 9px 16px; font-size: 15px; }

/* ----------------------------------------------------------------- hero */
.hero { position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.55;
  background:
    radial-gradient(900px 480px at 18% 12%, color-mix(in oklab, var(--trust) 14%, transparent), transparent 60%),
    radial-gradient(700px 420px at 88% 88%, color-mix(in oklab, var(--evidence) 14%, transparent), transparent 65%);
}
.hero-in { position: relative; padding: 84px 0 72px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--hairline); background: var(--surface);
  border-radius: 999px; padding: 5px 13px;
  font-family: var(--font-mono); font-size: 12.5px; color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--trust); }
h1.display { font-size: clamp(42px, 6.4vw, 70px); max-width: 17ch; margin-top: 26px; }
.lede {
  margin-top: 22px; max-width: 56ch;
  font-size: clamp(18px, 2.1vw, 21px); line-height: 1.5; color: var(--ink-2);
}
.cta-row { margin-top: 34px; display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.tertiary { font-size: 15.5px; color: var(--trust); }

/* --------------------------------------------------------------- section */
section { scroll-margin-top: 76px; }
.band { padding: 76px 0; }
.band-alt { background: var(--elevated); border-block: 1px solid var(--hairline); }
.kicker {
  font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-2); font-weight: 500;
}
h2.section-title { font-size: clamp(30px, 3.6vw, 40px); margin-top: 12px; max-width: 22ch; }
.section-lede { margin-top: 16px; max-width: 62ch; color: var(--ink-2); font-size: 17.5px; }

/* ----------------------------------------------------------------- grids */
.grid { display: grid; gap: 20px; margin-top: 40px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--surface); border: 1px solid var(--hairline);
  border-radius: var(--radius-card); padding: 26px;
  display: flex; flex-direction: column;
  transition: transform 200ms var(--ease), box-shadow 200ms var(--ease);
}
.card-link:hover { transform: translateY(-3px); box-shadow: var(--shadow-sheet); text-decoration: none; }
.card h3 { font-size: 22px; }
.card p { margin-top: 12px; color: var(--ink-2); font-size: 16px; }
.card .go { margin-top: auto; padding-top: 20px; color: var(--trust); font-size: 15.5px; font-weight: 500; }

/* chips */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  border-radius: 999px; padding: 4px 11px;
  font-family: var(--font-mono); font-size: 11.5px;
  letter-spacing: 0.04em; text-transform: uppercase;
}
.chip-trust { background: var(--trust-bg); color: var(--trust); }
.chip-evidence { background: var(--evidence-bg); color: var(--evidence); }
.chip-quiet { background: var(--elevated); color: var(--ink-2); border: 1px solid var(--hairline); }

/* ------------------------------------------------------------- lifecycle */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin-top: 42px; }
.step { position: relative; padding: 26px 24px 26px 0; }
.step + .step { padding-left: 24px; border-left: 1px solid var(--hairline); }
.step-n {
  font-family: var(--font-mono); font-size: 12px; color: var(--trust);
  font-variant-numeric: tabular-nums;
}
.step h3 { font-size: 18.5px; margin-top: 10px; font-family: var(--font-sans); font-weight: 600; letter-spacing: 0; }
.step p { margin-top: 8px; font-size: 15px; color: var(--ink-2); }

/* --------------------------------------------------------------- pricing */
.price-card { padding: 24px; }
.price-name { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-2); }
.price-amt {
  font-family: var(--font-serif); font-size: 36px; margin-top: 12px;
  font-variant-numeric: tabular-nums; letter-spacing: -0.02em;
}
.price-cad { font-size: 13.5px; color: var(--ink-2); }
.price-blurb { margin-top: 14px; font-size: 14.5px; color: var(--ink-2); }

/* ---------------------------------------------------------------- honest */
.honest {
  border: 1px solid var(--hairline); border-left: 3px solid var(--evidence);
  border-radius: var(--radius-card); background: var(--surface);
  padding: 26px 28px;
}
.honest h3 { font-size: 19px; font-family: var(--font-sans); font-weight: 600; letter-spacing: 0; }
.honest ul { margin: 14px 0 0; padding-left: 20px; color: var(--ink-2); font-size: 15.5px; }
.honest li { margin-top: 7px; }

/* ---------------------------------------------------------------- footer */
.footer { border-top: 1px solid var(--hairline); padding: 56px 0 40px; background: var(--elevated); }
.foot-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 32px; }
.foot-h { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-2); margin-bottom: 14px; }
.foot-col a { display: block; font-size: 15px; color: var(--ink-2); margin-bottom: 10px; }
.foot-col a:hover { color: var(--ink); }
.foot-bottom {
  margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--hairline);
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between;
  font-size: 14px; color: var(--ink-2);
}

/* --------------------------------------------------------------- responsive */
@media (max-width: 980px) {
  .g3, .g4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step + .step { border-left: 0; padding-left: 0; }
  .foot-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .hero-in { padding: 56px 0 48px; }
  .band { padding: 56px 0; }
  .g2, .g3, .g4, .steps { grid-template-columns: 1fr; }
  .nav-desktop { display: none; }
  .foot-grid { grid-template-columns: 1fr; }
  .cta-row .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .card-link:hover, .btn:hover { transform: none; }
}