/* =====================================================================
   sealed-env · landing page
   Plain CSS, no framework, no JS dependencies. Brand palette is the same
   one used by the sigillum logo: cream paper, deep ink, sealing-wax red.
   ===================================================================== */

:root {
  /* Palette */
  --cream:       #f1ebe0;
  --cream-deep:  #e8dfce;
  --ink:         #1a1612;
  --ink-soft:    #3a3530;
  --wax:         #a8201a;
  --wax-dark:    #7a1411;
  --rule:        rgba(26, 22, 18, 0.12);
  --rule-strong: rgba(26, 22, 18, 0.28);

  /* Typography */
  --font-display: 'Cinzel', 'Trajan Pro', 'IM Fell English SC', serif;
  --font-body:    'Fraunces', 'Instrument Serif', Georgia, serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Consolas, 'Courier New', monospace;

  /* Layout */
  --maxw:    72rem;
  --gutter:  clamp(1rem, 4vw, 2.5rem);
  --section-y: clamp(3.5rem, 8vw, 6.5rem);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--wax);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1.5px;
  transition: color 120ms ease, background 120ms ease;
}
a:hover { color: var(--wax); }

/* Inline code only — never inside <pre>. The :not(pre code) selector
   prevents the cream chip from leaking into every <span> of a snippet. */
:not(pre) > code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--cream-deep);
  padding: 0.08em 0.35em;
  border-radius: 3px;
}
pre code {
  font-family: var(--font-mono);
  background: transparent;
  padding: 0;
  border-radius: 0;
}

em { font-style: italic; }
strong { font-weight: 600; color: var(--ink); }

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.75rem var(--gutter);
  background: rgba(241, 235, 224, 0.92);
  backdrop-filter: saturate(140%) blur(6px);
  -webkit-backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--rule);
}
.topbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--ink);
}
.topbar__brand img { width: 28px; height: 28px; }

.topbar__links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.topbar__links a {
  text-decoration: none;
  color: var(--ink-soft);
}
.topbar__links a:hover { color: var(--wax); }
.topbar__lang {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}
.topbar__lang a {
  color: var(--ink-soft);
  text-decoration: none;
  padding: 0.15rem 0.25rem;
  border-radius: 2px;
}
.topbar__lang a[aria-current="page"] {
  color: var(--wax);
  font-weight: 500;
}
.topbar__lang a:hover { color: var(--ink); }
.topbar__lang span { color: var(--rule-strong); }

.topbar__cta {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
}
.topbar__cta:hover {
  background: var(--ink);
  color: var(--cream) !important;
  border-color: var(--ink);
}

@media (max-width: 768px) {
  .topbar__links a:not(.topbar__cta) { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: 3px;
  transition: transform 120ms ease, background 120ms ease, color 120ms ease;
}
.btn--primary {
  background: var(--wax);
  color: var(--cream);
  border: 1px solid var(--wax);
}
.btn--primary:hover {
  background: var(--wax-dark);
  border-color: var(--wax-dark);
  color: var(--cream);
}
.btn--ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-strong);
}
.btn--ghost:hover {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}

/* ---------- Hero ---------- */
.hero {
  padding: clamp(2.5rem, 8vw, 5rem) var(--gutter) clamp(3rem, 9vw, 6rem);
}
.hero__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
}
.hero__lockup {
  display: block;
  margin: 0 auto 2rem;
  width: min(640px, 88%);
  border-radius: 6px;
}
.hero__tagline {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.2vw, 2.5rem);
  letter-spacing: 0.02em;
  margin: 1rem auto 1.5rem;
  line-height: 1.25;
}
.hero__tagline em {
  color: var(--wax);
  font-style: italic;
  font-family: var(--font-body);
  font-weight: 400;
}
.hero__tagline code {
  background: transparent;
  font-size: 0.9em;
  padding: 0;
}

.hero__lede {
  max-width: 38rem;
  margin: 0 auto 2.5rem;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  color: var(--ink-soft);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 3rem;
}

.hero__badges {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}
.hero__badges li,
.hero__badges a {
  display: inline-flex;
  align-items: stretch;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-decoration: none;
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--rule);
}
.hero__badges a:hover .badge__value { background: var(--ink); color: var(--cream); }
.badge__label {
  background: var(--wax);
  color: var(--cream);
  padding: 0.35rem 0.7rem;
  letter-spacing: 0.04em;
}
.badge__value {
  background: var(--cream-deep);
  color: var(--ink);
  padding: 0.35rem 0.7rem;
  transition: background 120ms ease;
}

/* ---------- Section primitives ---------- */
.section {
  padding: var(--section-y) var(--gutter);
}
.section--alt {
  background: var(--cream-deep);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.section__inner {
  max-width: var(--maxw);
  margin: 0 auto;
}
.section__inner--narrow { max-width: 48rem; }

.section__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--wax);
  margin: 0 0 0.5rem;
}
.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: 0.01em;
  margin: 0 0 1.5rem;
}
.section__title code {
  font-size: 0.78em;
  background: var(--cream);
  border: 1px solid var(--rule);
}
.section__title em {
  color: var(--wax);
  font-family: var(--font-body);
  font-weight: 400;
}
.section__lede {
  max-width: 44rem;
  font-size: 1.05rem;
  color: var(--ink-soft);
  margin-bottom: 2.5rem;
}
.section__quote {
  margin: 2.5rem 0 0;
  padding: 1.4rem 1.6rem;
  background: var(--cream);
  border-left: 4px solid var(--wax);
  font-size: 1.05rem;
  line-height: 1.55;
}

/* ---------- Grids ---------- */
.grid {
  display: grid;
  gap: 1.4rem;
}
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(28rem, 100%), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(18rem, 100%), 1fr)); }

/* ---------- Cards ---------- */
.card {
  background: var(--cream);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1.4rem 1.5rem 1.5rem;
}
.card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  margin: 0 0 0.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.card__date {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--wax);
}
.card p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

/* Mode cards */
.card--mode { display: flex; flex-direction: column; gap: 0.9rem; }
.card--mode h3 {
  display: block;
  font-size: 1.5rem;
  text-transform: lowercase;
  letter-spacing: 0;
  font-style: italic;
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--wax);
}
.card--mode .card__sub {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: -0.6rem 0 0;
}
.card--mode ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.95rem;
}
.card--mode li {
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--rule);
}
.card--mode li:last-child { border-bottom: none; }
.card--mode .card__verdict {
  margin-top: auto;
  font-size: 0.92rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--rule);
}
.card--mode-emph {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}
.card--mode-emph h3 { color: var(--cream); }
.card--mode-emph .card__sub { color: rgba(241, 235, 224, 0.7); }
.card--mode-emph li { border-color: rgba(241, 235, 224, 0.18); }
.card--mode-emph .card__verdict { border-color: rgba(241, 235, 224, 0.18); }
.card--mode-emph code { background: rgba(241, 235, 224, 0.12); color: inherit; }
.card--mode-emph strong { color: var(--cream); }

/* ---------- Diagram ---------- */
.diagram-wrap {
  margin-top: 3rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--cream);
}
.diagram-wrap > summary {
  cursor: pointer;
  padding: 0.9rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
}
.diagram-wrap > summary:hover { color: var(--wax); }
.diagram-wrap[open] > summary { border-bottom: 1px solid var(--rule); }
.diagram {
  margin: 0;
  padding: 1.4rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--ink);
  overflow-x: auto;
  white-space: pre;
}

/* ---------- Snippets ---------- */
.snippet {
  background: var(--ink);
  color: var(--cream);
  border-radius: 5px;
  overflow: hidden;
  font-size: 0.85rem;
}
.snippet__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 1.1rem;
  background: rgba(241, 235, 224, 0.06);
  border-bottom: 1px solid rgba(241, 235, 224, 0.12);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.snippet__lang {
  color: var(--cream);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.snippet__file {
  color: rgba(241, 235, 224, 0.55);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 60%;
}
.snippet__code {
  margin: 0;
  padding: 1.2rem 1.3rem 1.4rem;
  font-family: var(--font-mono);
  line-height: 1.65;
  overflow-x: auto;
  color: var(--cream);
}
/* Reset any inheritance — the snippet body should never look chipped. */
.snippet__code code,
.snippet__code span {
  background: transparent !important;
  padding: 0 !important;
  border-radius: 0 !important;
  color: inherit;
  font-size: inherit;
}
.snippet__code .c { color: rgba(241, 235, 224, 0.5); font-style: italic; }
.snippet__code .k { color: #f4a574; }
.snippet__code .s { color: #c9d99c; }

/* ---------- Threat table ---------- */
.threat-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.96rem;
  background: var(--cream);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
}
.threat-table th,
.threat-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
.threat-table th {
  background: var(--cream-deep);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 500;
}
.threat-table tbody tr:last-child td { border-bottom: none; }
.threat-table__not td {
  color: var(--ink-soft);
  background: rgba(168, 32, 26, 0.05);
}
.threat-table__not td:first-child::before { content: '— '; color: var(--wax); }

/* ---------- CTA section ---------- */
.section--cta { background: var(--ink); color: var(--cream); }
.section--cta .section__title { color: var(--cream); }
.section--cta .section__title em { color: var(--wax); }
.section--cta .section__eyebrow { color: var(--wax); }
.section--cta a { color: var(--cream); text-decoration-color: var(--wax); }
.section--cta a:hover { color: var(--wax); }
.section--cta code {
  background: rgba(241, 235, 224, 0.14);
  color: var(--cream);
}
.section--cta strong { color: var(--cream); }

.help-list {
  margin: 2rem 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.help-list li {
  padding-left: 1.4rem;
  position: relative;
}
.help-list li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--wax);
  font-size: 1.6rem;
  line-height: 1;
}

.help-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 2rem 0 2.5rem;
}
.section--cta .btn--ghost {
  border-color: rgba(241, 235, 224, 0.3);
  color: var(--cream);
}
.section--cta .btn--ghost:hover {
  background: var(--cream);
  color: var(--ink);
  border-color: var(--cream);
}

.help-spanish {
  border-top: 1px solid rgba(241, 235, 224, 0.18);
  padding-top: 2rem;
  margin-top: 2rem;
  font-size: 1rem;
  font-style: italic;
}

/* ---------- Sponsor section ---------- */
.section--sponsor {
  background: var(--cream);
  border-top: 1px solid var(--rule);
}
.sponsor-list {
  margin: 1.5rem 0 2.5rem;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.sponsor-list li {
  padding-left: 1.4rem;
  position: relative;
  color: var(--ink-soft);
}
.sponsor-list li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--wax);
  font-size: 1.6rem;
  line-height: 1;
}
.sponsor-list strong { color: var(--ink); }

.sponsor-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(15rem, 100%), 1fr));
  gap: 1rem;
  margin: 2.5rem 0 1.5rem;
}
.tier {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.4rem 1.3rem 1.5rem;
  background: var(--cream);
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  text-decoration: none;
  color: var(--ink);
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}
.tier:hover {
  transform: translateY(-2px);
  border-color: var(--wax);
  color: var(--ink);
}
.tier__amount {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2rem;
  line-height: 1;
  color: var(--wax);
  letter-spacing: 0.01em;
}
.tier__period {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--ink-soft);
  letter-spacing: 0.04em;
  margin-left: 0.2rem;
}
.tier__label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 0.4rem;
}
.tier__desc {
  font-size: 0.93rem;
  color: var(--ink-soft);
  line-height: 1.5;
  margin-top: 0.4rem;
}
.tier--featured {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--cream);
}
.tier--featured .tier__amount { color: var(--cream); }
.tier--featured .tier__label,
.tier--featured .tier__period,
.tier--featured .tier__desc { color: rgba(241, 235, 224, 0.7); }
.tier--featured:hover {
  border-color: var(--wax);
  color: var(--cream);
  background: var(--wax-dark);
}
.tier--featured:hover .tier__amount,
.tier--featured:hover .tier__label,
.tier--featured:hover .tier__period,
.tier--featured:hover .tier__desc { color: var(--cream); }

.sponsor-alt {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--rule);
  text-align: center;
}
.sponsor-alt__lead {
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  margin: 0 0 1rem;
}
.sponsor-alt__btn {
  display: inline-block;
  margin-bottom: 0.8rem;
}

.sponsor-note {
  font-style: italic;
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--cream-deep);
  border-top: 1px solid var(--rule);
  padding: 3rem var(--gutter) 2rem;
}
.footer__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  text-align: center;
}
.footer__motto {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.7;
}
.footer__motto em {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--wax);
  font-size: 1rem;
}
.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.4rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.footer__copy {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  width: 100%;
  max-width: 28rem;
}

/* ---------- Reduced motion / focus ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}
:focus-visible {
  outline: 2px solid var(--wax);
  outline-offset: 3px;
  border-radius: 2px;
}