/* ===========================================================
   Concordex marketing surface — federal base theme
   ===========================================================
   Mirrors the federal :root tokens from
   dashboard/src/styles.workspace.css so the public site
   inherits the same design language as the product.

   Marketing pages use the federal BASE (palette, fonts,
   square corners, tabular nums). The heavier .federal-shell
   Treasury treatment (full banner + ruled tables) is reserved
   for billing / compliance / audit surfaces inside the
   product. See feedback_content_standards.md and
   project_federal_design_language.md.

   Loaded from each marketing page via
       <link rel="stylesheet" href="/federal.css">
   =========================================================== */

:root {
  /* paper + ink */
  --fed-paper:        #ffffff;
  --fed-paper-soft:   #f6f7f9;
  --fed-ink:          #14181f;
  --fed-ink-soft:     #3a4250;
  --fed-muted:        #6b7280;

  /* rules */
  --fed-rule:         #d4d8de;
  --fed-rule-strong:  #14181f;

  /* banner palette */
  --fed-banner:       #0a2540;   /* federal navy */
  --fed-banner-fg:    #ffffff;
  --fed-banner-rule:  #c8102e;   /* treasury red hairline */

  /* accent + state colors */
  --fed-accent:       #1a3a8c;
  --fed-positive:     #1a6e3a;
  --fed-negative:     #9b1c1c;
  --fed-focus:        #ffbf00;

  /* type stack — "System A": Public Sans + JetBrains Mono, no serif */
  --font-sans:        'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:        'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-serif:       var(--font-sans);  /* serif token aliased to sans; legacy references resolve cleanly */

  /* USWDS-derived 8px spacing scale */
  --space-1:          0.25rem;
  --space-2:          0.5rem;
  --space-3:          0.75rem;
  --space-4:          1rem;
  --space-5:          1.25rem;
  --space-6:          1.5rem;
  --space-8:          2rem;
  --space-10:         2.5rem;
  --space-12:         3rem;
  --space-16:         4rem;
  --space-20:         5rem;

  /* layout */
  --gutter:           max(1.25rem, 4vw);
  --maxw:             1140px;
  --content-w:        680px;
}

/* ─────────────────────────────────────────────────────────────────────
 * BR.4 (#77) — Tier-1 vs Tier-2 layout grammar
 * ─────────────────────────────────────────────────────────────────────
 * This stylesheet is THE Tier-1 reference. Every page under marketing/
 * (landing, /pricing, /docs, /trial, /security, /customers, /changelog,
 * /legal/*) inherits its grammar from these tokens. Tier-1 surfaces:
 *
 *   - run with --maxw 1140px (hero) and --content-w 680px (prose)
 *   - pace heroes with --space-16 / --space-20 vertical rhythm
 *   - use --gutter (responsive max(1.25rem, 4vw)) for page side padding
 *   - lean on whitespace; reading speed matters more than density
 *
 * Tier-2 (dashboard/, product surfaces) lives in
 * dashboard/src/styles.workspace.css and applies the same tokens with
 * tighter scaling — see that file's mirrored BR.4 block for the
 * authenticated-surface variant of this grammar.
 * ───────────────────────────────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--fed-paper);
  color: var(--fed-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-variant-numeric: tabular-nums;
}

::selection { background: var(--fed-banner); color: var(--fed-banner-fg); }

a {
  color: inherit;
  text-decoration: none;
}
a.inline {
  color: var(--fed-accent);
  border-bottom: 1px solid currentColor;
}
a.inline:hover { color: var(--fed-banner); }

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

/* ============================================================
   Skip link — WCAG 2.4.1 Bypass Blocks (A)
   ============================================================
   Visually hidden until focused. First Tab from the top of the
   page reveals it; activating jumps the user past the header
   and nav directly to the page's main content. USWDS-pattern
   styling: full-bleed federal navy bar that slides into view.
   Each marketing page should render
       <a href="#main" class="skip-link">Skip to main content</a>
   as the first child of <body>, and the page's main content
   container should carry id="main" (typically on <main>).
   ============================================================ */
.skip-link {
  position: absolute;
  left: 0;
  top: -100px;
  z-index: 9999;
  padding: var(--space-3) var(--space-4);
  background: var(--fed-banner);
  color: var(--fed-banner-fg);
  font-family: var(--font-sans);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--fed-banner-rule);
}
.skip-link:focus,
.skip-link:focus-visible {
  top: 0;
  outline: 3px solid var(--fed-focus);
  outline-offset: -3px;
}

/* ============================================================
   Typography
   ============================================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--fed-ink);
  letter-spacing: -0.005em;
  margin: 0;
  font-weight: 600;
}

/* Global scale — matches the product:
   h1 28 / h2 22 / h3 18 / h4 16, all 600. */
h1 { font-size: 1.75rem;  line-height: 1.2;  font-weight: 700; }
h2 { font-size: 1.375rem; line-height: 1.25; }
h3 { font-size: 1.125rem; line-height: 1.3;  }
h4 { font-size: 1rem;     line-height: 1.35; }

p {
  margin: 0;
  color: var(--fed-ink-soft);
}

strong, b { font-weight: 600; color: var(--fed-ink); }

code, kbd, samp {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--fed-paper-soft);
  padding: 1px 5px;
  border-radius: 0;
  color: var(--fed-ink);
  border: 1px solid var(--fed-rule);
}

/* ============================================================
   Layout
   ============================================================ */

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.col {
  max-width: var(--content-w);
  margin: 0 auto;
}

/* ============================================================
   Federal banner — navy header band with treasury-red hairline
   ============================================================ */

.federal-banner {
  background: var(--fed-banner);
  color: var(--fed-banner-fg);
  border-top: 3px solid var(--fed-banner-rule);   /* treasury red hairline */
  padding: var(--space-6) 0 var(--space-5);
}
.federal-banner .row {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-6);
  flex-wrap: wrap;
}
.federal-banner .mark {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.federal-banner .mark .sub {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: rgba(255,255,255,.7);
  margin-left: var(--space-3);
  text-transform: uppercase;
}
.federal-banner nav { display: flex; gap: var(--space-5); align-items: center; flex-wrap: wrap; }
.federal-banner nav a {
  color: rgba(255,255,255,.85);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}
.federal-banner nav a:hover { color: var(--fed-banner-fg); }
.federal-banner nav a.active { color: var(--fed-banner-fg); text-decoration: underline; text-underline-offset: 4px; }

/* ============================================================
   Federal document header — for any page that wants the
   small-caps mono kicker + larger title under the banner.
   ============================================================ */

.federal-header {
  border-bottom: 1px solid var(--fed-rule);
  padding: var(--space-10) 0 var(--space-8);
}
.federal-header .doc-no {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--fed-muted);
  margin-bottom: var(--space-3);
}
.federal-header h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-4);
}
.federal-header .lede {
  font-size: 1.0625rem;
  color: var(--fed-ink-soft);
  max-width: 48rem;
  line-height: 1.55;
}
.federal-header .meta {
  margin-top: var(--space-6);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fed-muted);
  letter-spacing: 0.04em;
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.federal-header .meta b { color: var(--fed-ink-soft); font-weight: 600; }

/* ============================================================
   Federal section — small-caps mono kicker over 2px ink rule
   ============================================================ */

.federal-section {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--fed-rule);
}
.federal-section:last-of-type { border-bottom: none; }
.federal-section-head {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--fed-ink);
  font-weight: 600;
  border-bottom: 2px solid var(--fed-ink);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-6);
}
.federal-section h2 {
  margin: 0 0 var(--space-3);
  font-size: 1.5rem;
  line-height: 1.2;
}
.federal-section h2 + p.deck {
  font-size: 1rem;
  color: var(--fed-ink-soft);
  max-width: 48rem;
  margin: 0 0 var(--space-6);
}
.federal-section p { max-width: 48rem; margin: var(--space-4) 0; }

/* ============================================================
   Federal pill — status / version chip
   ============================================================ */

.federal-pill {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  padding: 0.18rem 0.55rem;
  border: 1px solid var(--fed-rule);
  background: var(--fed-paper);
  color: var(--fed-ink-soft);
}
.federal-pill.accent   { background: var(--fed-banner); color: var(--fed-banner-fg); border-color: var(--fed-banner); }
.federal-pill.positive { color: var(--fed-positive); border-color: var(--fed-positive); }
.federal-pill.negative { color: var(--fed-negative); border-color: var(--fed-negative); }

/* ============================================================
   Federal buttons — square corners, no shadows
   ============================================================ */

.federal-btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.65rem 1.05rem;
  border: 1px solid var(--fed-ink);
  background: var(--fed-paper);
  color: var(--fed-ink);
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
  white-space: nowrap;
}
.federal-btn:hover { background: var(--fed-paper-soft); }
.federal-btn.primary {
  background: var(--fed-banner);
  color: var(--fed-banner-fg);
  border-color: var(--fed-banner);
}
.federal-btn.primary:hover { background: var(--fed-ink); border-color: var(--fed-ink); }
.federal-btn:disabled { background: var(--fed-rule); border-color: var(--fed-rule); color: var(--fed-muted); cursor: wait; }
.federal-btn .arrow { transition: transform .12s; }
.federal-btn:hover .arrow { transform: translateX(2px); }

/* ============================================================
   Federal note — left-bar inline notice (info / warn / ok)
   ============================================================ */

.federal-note {
  background: var(--fed-paper-soft);
  border: 1px solid var(--fed-rule);
  border-left: 3px solid var(--fed-ink);
  padding: var(--space-4) var(--space-5);
  margin: var(--space-5) 0;
  color: var(--fed-ink-soft);
  font-size: 0.9375rem;
  line-height: 1.55;
}
.federal-note strong { color: var(--fed-ink); font-weight: 600; }
.federal-note.warn { border-left-color: var(--fed-negative); }
.federal-note.ok   { border-left-color: var(--fed-positive); }

/* ============================================================
   Federal table — ruled rows, right-aligned numerics
   ============================================================ */

.federal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  margin: var(--space-5) 0;
}
.federal-table th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--fed-muted);
  padding: var(--space-3) var(--space-4);
  border-bottom: 2px solid var(--fed-ink);
}
.federal-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--fed-rule);
  color: var(--fed-ink-soft);
  vertical-align: top;
}
.federal-table td.num,
.federal-table th.num { text-align: right; font-family: var(--font-mono); }
.federal-table tr:last-child td { border-bottom: none; }
.federal-table tr.subtotal-row td {
  border-top: 2px solid var(--fed-ink);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--fed-ink);
}

/* ============================================================
   Federal card grid — for module / use-case cards
   ============================================================ */

.federal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-4);
  margin: var(--space-6) 0;
}
.federal-card {
  background: var(--fed-paper);
  border: 1px solid var(--fed-rule);
  padding: var(--space-5);
}
.federal-card .kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 600;
  color: var(--fed-muted);
  margin-bottom: var(--space-3);
  display: flex; gap: var(--space-3); align-items: center; justify-content: space-between;
}
.federal-card h3 {
  font-size: 1.0625rem;
  margin: 0 0 var(--space-2);
}
.federal-card p {
  font-size: 0.9375rem;
  margin: 0;
}
.federal-card .meta-list {
  margin: var(--space-4) 0 0;
  padding: var(--space-3) 0 0;
  list-style: none;
  border-top: 1px solid var(--fed-rule);
}
.federal-card .meta-list li {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--fed-ink-soft);
  padding: 0.18rem 0;
  display: flex; gap: var(--space-2); align-items: baseline;
}
.federal-card .meta-list li::before { content: '·'; color: var(--fed-banner); font-weight: 700; }

/* ============================================================
   Federal footer
   ============================================================ */

.federal-foot {
  border-top: 1px solid var(--fed-rule);
  background: var(--fed-paper-soft);
  padding: var(--space-10) 0 var(--space-8);
  font-size: 0.85rem;
  color: var(--fed-muted);
}
.federal-foot .row {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-8);
}
@media (max-width: 760px) {
  .federal-foot .row { grid-template-columns: 1fr 1fr; }
}
.federal-foot .mark {
  font-weight: 700;
  color: var(--fed-ink);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.federal-foot h5 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--fed-muted);
  font-weight: 600;
  margin: 0 0 var(--space-3);
}
.federal-foot a {
  display: block;
  color: var(--fed-ink-soft);
  padding: 0.2rem 0;
  font-size: 0.875rem;
}
.federal-foot a:hover { color: var(--fed-ink); }
.federal-foot .legal {
  max-width: var(--maxw);
  margin: var(--space-8) auto 0;
  padding: var(--space-5) var(--gutter) 0;
  border-top: 1px solid var(--fed-rule);
  display: flex; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--fed-muted);
  letter-spacing: 0.04em;
}

/* ============================================================
   Federal empty / centered statement
   ============================================================ */

.federal-empty {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fed-muted);
  padding: var(--space-8) 0;
}

/* ============================================================
   Print niceties — the dashboard convention says native
   window.print() should produce a clean PDF.
   ============================================================ */

@media print {
  .federal-banner { background: #fff; color: var(--fed-ink); border-top-color: var(--fed-ink); }
  .federal-banner nav, .federal-btn, .copy-btn { display: none !important; }
  a[href]:after { content: ' (' attr(href) ')'; font-family: var(--font-mono); font-size: 0.75em; color: var(--fed-muted); }
}