/* ==========================================================================
   Suadela Engine — /v2/ Direct-response letter
   A self-demonstrating long-form page in the Halbert/Schwartz/Kennedy idiom.
   ========================================================================== */

:root {
  --paper: #fafafa;
  --paper-soft: #f4f4f4;
  --ink: #1a1410;
  --ink-muted: #4a4238;
  --ink-subtle: #7a7265;
  --rule: rgba(26, 20, 16, 0.14);
  --accent: #5b3ccf;
  --accent-soft: #7c5cf0;
  --highlighter: #f7e67a;
  --button-dark: #141019;
  --button-dark-hover: #2b2138;

  --serif-display: "Instrument Serif", Georgia, "Times New Roman", serif;
  --serif-body: "Crimson Pro", "Iowan Old Style", Georgia, serif;
  --hand: "Caveat", "Brush Script MT", cursive;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif-body);
  font-size: 20px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --------------------------------------------------------------------------
   Header — minimal, just wordmark + CTA
   -------------------------------------------------------------------------- */

.letter-header {
  padding: 22px 0 0;
  border-bottom: 1px solid var(--rule);
}

.letter-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif-display);
  font-size: 22px;
  line-height: 1;
  color: var(--ink);
  text-decoration: none;
}
.brand-mark img {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  display: block;
}
.brand-mark em {
  font-style: italic;
  font-size: 15px;
  color: var(--ink-subtle);
  letter-spacing: 0.04em;
}

.header-lang {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-subtle);
}
.header-lang a { color: var(--ink-subtle); }
.header-lang a[aria-current="page"] { color: var(--ink); }

/* --------------------------------------------------------------------------
   Dateline (newspaper style)
   -------------------------------------------------------------------------- */

.dateline {
  padding: 28px 0 8px;
  text-align: center;
}
.dateline-inner {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-subtle);
}
.dateline-inner::before,
.dateline-inner::after {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--rule);
}

/* --------------------------------------------------------------------------
   Hero letter opener
   -------------------------------------------------------------------------- */

.hero-letter {
  padding: 20px 0 60px;
  text-align: center;
}

.hero-eyebrow {
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}

.hero-letter h1 {
  font-family: var(--serif-display);
  font-weight: 400;
  font-size: clamp(42px, 6vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.012em;
  margin: 0 0 32px;
  color: var(--ink);
}
.hero-letter h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-dek {
  font-family: var(--serif-body);
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--ink-muted);
  margin: 0 auto;
  max-width: 560px;
}

/* --------------------------------------------------------------------------
   Body prose
   -------------------------------------------------------------------------- */

.prose { padding: 20px 0; }

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 22px;
}

.prose ul, .prose ol { padding-left: 24px; }
.prose li { margin-bottom: 6px; }

.prose strong { font-weight: 700; color: var(--ink); }

.prose > p:first-child::first-letter,
.prose .leading p:first-child::first-letter {
  font-family: var(--serif-display);
  font-size: 78px;
  line-height: 0.85;
  float: left;
  padding: 8px 10px 0 0;
  color: var(--ink);
}

.prose a {
  color: var(--accent);
  border-bottom: 1px solid rgba(91, 60, 207, 0.3);
  transition: border-color 0.15s ease;
}
.prose a:hover { border-color: var(--accent); }

.prose mark {
  background: linear-gradient(180deg, transparent 40%, var(--highlighter) 40%, var(--highlighter) 90%, transparent 90%);
  color: var(--ink);
  padding: 0 2px;
}

/* Pull quotes */
.pullquote {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1.2;
  text-align: center;
  color: var(--ink);
  margin: 40px auto;
  max-width: 560px;
  padding: 32px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.pullquote-attr {
  display: block;
  font-family: var(--sans);
  font-size: 12px;
  font-style: normal;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin-top: 14px;
}

/* Typographic divider */
.divider {
  text-align: center;
  color: var(--ink-subtle);
  font-family: var(--serif-display);
  font-size: 18px;
  letter-spacing: 1em;
  margin: 48px 0 32px;
}
.divider::before { content: "\2731 \2731 \2731"; }

/* Section heading (small caps) */
.prose h2 {
  font-family: var(--serif-display);
  font-weight: 400;
  font-size: clamp(28px, 3.2vw, 38px);
  line-height: 1.14;
  margin: 48px 0 18px;
  color: var(--ink);
}
.prose h2 em { font-style: italic; color: var(--accent); }

.prose h3 {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin: 36px 0 12px;
}

/* --------------------------------------------------------------------------
   Diagnostic memo block (self-demonstrating)
   -------------------------------------------------------------------------- */

.memo {
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 28px 32px;
  margin: 36px 0;
  font-family: "SF Mono", ui-monospace, Menlo, monospace;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-muted);
  box-shadow: 2px 3px 0 rgba(26, 20, 16, 0.04);
}
.memo-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px dashed var(--rule);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-subtle);
}
.memo-line {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
}
.memo-line .label {
  color: var(--ink-subtle);
  margin-right: 8px;
}
.memo-verdict {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--rule);
  color: var(--accent);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Inline CTA
   -------------------------------------------------------------------------- */

.inline-cta {
  text-align: center;
  margin: 48px 0;
}
.inline-cta .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--button-dark);
  color: #fff;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  padding: 16px 28px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.inline-cta .btn-primary:hover {
  background: var(--button-dark-hover);
  transform: translateY(-1px);
}
.inline-cta .fine {
  display: block;
  margin-top: 14px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-subtle);
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   Offer box (Kennedy-style risk reversal)
   -------------------------------------------------------------------------- */

.offer {
  margin: 48px 0;
  padding: 36px 36px 40px;
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 6px;
  box-shadow: 4px 5px 0 rgba(26, 20, 16, 0.05);
}
.offer h2 {
  margin-top: 0;
  text-align: center;
}
.offer-plans {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin: 28px 0 24px;
  padding: 24px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.offer-plan {
  text-align: center;
}
.offer-plan .name {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-subtle);
  margin-bottom: 8px;
}
.offer-plan .price {
  font-family: var(--serif-display);
  font-size: 44px;
  line-height: 1;
  color: var(--ink);
}
.offer-plan .price-sub {
  font-size: 14px;
  color: var(--ink-muted);
  font-family: var(--sans);
}

.guarantee-block {
  text-align: center;
  padding: 18px 0 0;
  font-style: italic;
  font-size: 18px;
  color: var(--ink-muted);
}

/* --------------------------------------------------------------------------
   Signature block
   -------------------------------------------------------------------------- */

.signoff {
  margin: 64px 0 32px;
}
.signoff p {
  margin: 0 0 8px;
}
.sig {
  display: block;
  font-family: var(--hand);
  font-size: 44px;
  line-height: 1;
  color: var(--accent);
  margin: 24px 0 6px;
}
.sig-title {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-subtle);
}

/* --------------------------------------------------------------------------
   P.S. and P.P.S.
   -------------------------------------------------------------------------- */

.ps, .pps {
  margin: 40px 0 0;
  padding-top: 28px;
  border-top: 1px solid var(--rule);
}
.ps-label, .pps-label {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 28px;
  color: var(--accent);
  margin-right: 10px;
}

/* --------------------------------------------------------------------------
   Margin note (demonstrating the methodology)
   -------------------------------------------------------------------------- */

.margin-note {
  display: block;
  margin: 28px 0;
  padding: 16px 20px;
  background: transparent;
  border-left: 3px solid var(--accent);
  font-family: var(--hand);
  font-size: 22px;
  line-height: 1.35;
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.letter-footer {
  margin-top: 80px;
  padding: 32px 0 40px;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-subtle);
  text-align: center;
}
.letter-footer a {
  color: var(--ink-subtle);
  border-bottom: 1px solid transparent;
}
.letter-footer a:hover { color: var(--ink); border-color: var(--ink); }
.letter-footer .links {
  display: flex;
  gap: 22px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.letter-footer .legal {
  margin: 0;
  color: var(--ink-subtle);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

.btn-label-short { display: none; }

@media (max-width: 680px) {
  html, body { font-size: 18px; }
  .container { padding: 0 20px; }
  .btn-label-full { display: none; }
  .btn-label-short { display: inline; }
  .hero-letter h1 { font-size: 40px; }
  .hero-dek { font-size: 19px; }
  .offer { padding: 28px 22px 32px; }
  .offer-plans { grid-template-columns: 1fr; gap: 20px; padding: 20px 0; }
  .memo { padding: 22px 22px; font-size: 13px; }
  .sig { font-size: 38px; }
  .prose > p:first-child::first-letter { font-size: 64px; }
}