/* ============================================================
   site.css — landing page for Your Software Mess Manual.
   Implements design-system.md for the WEB (its native medium), so unlike
   shared/css/theme.css there are no PRINT: adaptations here. Component
   measurements follow the live pilotweststudios.com stylesheet, which is the
   reference implementation (design-system.md, "How to use this document").
   Mobile-first (§1.3): base rules are the 380–390px layout.
   Fonts are copied from shared/fonts by scripts/site.mjs.
   ============================================================ */

@font-face {
  font-family: "Libre Caslon Display";
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/LibreCaslonDisplay-400.woff2") format("woff2");
}
@font-face {
  font-family: "Lora";
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/Lora-400.woff2") format("woff2");
}
@font-face {
  font-family: "Lora";
  font-weight: 700;
  font-display: swap;
  src: url("/fonts/Lora-700.woff2") format("woff2");
}
@font-face {
  font-family: "Lora";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/Lora-400italic.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-weight: 400;
  font-display: swap;
  src: url("/fonts/IBMPlexMono-400.woff2") format("woff2");
}

:root {
  /* Palette (§2.1). Red is accent only: CTAs, item tags, item rules,
     mini-rules. Blue carries all structure. */
  --ground: #f7f6f0;
  --ink: #141414;
  --red: #e50001;
  --blue: #0076c1;
  --muted: #6b665b;
  --rule-soft: rgba(0, 0, 0, 0.12);
  /* Display surface behind product images. The book's pages share the
     site's parchment, so they need a darker ground to read as objects. */
  --surface: #e3ddcd;
  --page-shadow: 0 1px 2px rgba(0, 0, 0, 0.12), 0 10px 28px rgba(20, 20, 20, 0.18);

  --display-font: "Libre Caslon Display", Georgia, serif;
  --body-font: "Lora", Georgia, serif;
  --ui-font: Arial, "Helvetica Neue", sans-serif;
  --mono-font: "IBM Plex Mono", "SF Mono", Menlo, monospace;
}

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

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

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--body-font);
  font-size: 15px;
  line-height: 1.6;
}

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

/* Launch/list price swaps rely on [hidden] beating display: flex. */
[hidden] { display: none !important; }

a { color: var(--blue); }

/* §2.2a: every heading is 700. Caslon headings get the browser's
   synthesized bold from this rule. Never set a Caslon heading to 400. */
h1, h2, h3, h4 { font-weight: 700; margin: 0; }

.wrap {
  max-width: 1280px;
  margin: 0 auto;
}

/* ---- Nav + masthead strip (§4.1, §4.2) ----------------------- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}
.lockup {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}
.lockup img { height: 22px; width: auto; }
.lockup-studios {
  border-left: 1px solid rgba(0, 0, 0, 0.18);
  padding-left: 10px;
  font-family: var(--display-font);
  font-size: 13px;
  font-style: italic;
  line-height: 1;
}
.nav-links {
  display: flex;
  gap: 20px;
  font-family: var(--ui-font);
  font-size: 12px;
}
.nav-links a { color: var(--ink); text-decoration: none; }

.masthead {
  display: flex;
  justify-content: space-between;
  padding: 8px 22px;
  border-bottom: 1px solid var(--blue);
  color: var(--blue);
  font-family: var(--ui-font);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.masthead .right { opacity: 0.65; }

/* ---- Sections (§3.2, §4.4) ----------------------------------- */
.section { padding: 48px 22px 56px; }

.section-eyebrow {
  display: block;
  border-top: 1px solid var(--blue);
  padding-top: 10px;
  margin-bottom: 20px;
  color: var(--blue);
  font-family: var(--ui-font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.h2 {
  max-width: 900px;
  margin-bottom: 28px;
  font-family: var(--display-font);
  font-size: 36px;
  line-height: 1.02;
  letter-spacing: -0.012em;
}

.section-intro {
  max-width: 620px;
  margin: 0;
  font-size: 16px;
}

/* Item tags: red Arial bold caps (§2.3, §4.7). */
.item-tag {
  color: var(--red);
  font-family: var(--ui-font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Caslon item title shared by problem items and steps (§7.13). */
.item-title {
  font-family: var(--display-font);
  font-size: 23px;
  line-height: 1.1;
  letter-spacing: -0.012em;
}

/* ---- Product hero: cover + buy box ----------------------------
   Owner-approved exception to §4.3 (text-only hero): this page sells a
   product, so the cover leads. Stacks on mobile, two columns on desktop. */
.product {
  display: grid;
  gap: 32px;
  padding-top: 24px;
}
.product-media {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 32px 24px 20px;
  background: var(--surface);
}
.product-media img {
  width: 72%;
  max-width: 380px;
  box-shadow: var(--page-shadow);
}
.product-peek {
  color: var(--blue);
  font-family: var(--ui-font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
}
.product-kicker {
  margin: 0 0 12px;
  color: var(--blue);
  font-family: var(--ui-font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.product h1 {
  margin-bottom: 20px;
  font-family: var(--display-font);
  font-size: 38px;
  line-height: 1.02;
  letter-spacing: -0.012em;
}
.hero-intro {
  max-width: 560px;
  margin: 0 0 24px;
  color: #222;
  font-size: 16px;
}
.product .trust-strip {
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--rule-soft);
}
.trust-strip {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  color: #1f1f1f;
  font-family: var(--ui-font);
  font-size: 12px;
}
.trust-strip li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.trust-strip li::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
}

/* ---- Price + CTA --------------------------------------------- */
.price {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}
.price-now {
  font-family: var(--display-font);
  font-size: 40px;
  line-height: 1;
}
.price-was {
  color: var(--muted);
  font-family: var(--display-font);
  font-size: 24px;
  text-decoration: line-through;
}
.price-label {
  color: var(--muted);
  font-family: var(--ui-font);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.cta {
  display: block;
  width: 100%;
  border: 0;
  border-radius: 3px;
  background: var(--red);
  color: var(--ground);
  padding: 16px 20px;
  font-family: var(--ui-font);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}
.cta:hover,
.cta:focus-visible { background: #c40000; }

.micro {
  margin: 10px 0 0;
  color: var(--muted);
  font-family: var(--ui-font);
  font-size: 11px;
  line-height: 1.5;
  text-align: center;
}

/* Mono checkmark pills under a CTA (cta-footnote on the homepage). */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--rule-soft);
  color: var(--muted);
  font-family: var(--mono-font);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.pills span::before {
  content: "✓";
  margin-right: 6px;
  color: var(--blue);
  font-weight: 700;
}

/* ---- Problem grid (§4.5) ------------------------------------- */
.problems {
  display: grid;
  gap: 28px;
  margin-top: 36px;
}
.problem {
  border-left: 3px solid var(--red);
  padding-left: 18px;
}
.problem p { margin: 8px 0 0; }

.mini-rule {
  width: 40px;
  height: 2px;
  margin: 40px 0 16px;
  background: var(--red);
}
.relief {
  max-width: 820px;
  margin: 0;
  font-family: var(--display-font);
  font-style: italic;
  font-size: 23px;
  line-height: 1.3;
}

/* ---- Steps (process pattern, §4.8) --------------------------- */
.steps { margin-top: 36px; }
.step {
  display: grid;
  gap: 8px;
  padding: 28px 0;
  border-top: 1px solid var(--rule-soft);
}
.step:last-child { border-bottom: 1px solid var(--rule-soft); }
.step-numeral {
  color: var(--blue);
  font-family: var(--display-font);
  font-size: 50px;
  line-height: 1;
}
.step p { margin: 4px 0 0; }
.step .pills { margin-top: 14px; padding-top: 12px; color: var(--ink); }

/* ---- Look inside --------------------------------------------- */
.pages {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 28px 22px;
  background: var(--surface);
}
.pages figure { margin: 0 auto; max-width: 340px; }
.pages img { box-shadow: var(--page-shadow); }
.pages figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-family: var(--ui-font);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.section-buy { margin-top: 40px; }

/* ---- Who wrote it -------------------------------------------- */
.letter { max-width: 620px; }
.letter p { margin: 0 0 18px; font-size: 16px; }

/* ---- Details (ticket-style metadata, §2.2) ------------------- */
.details {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 10px 20px;
  max-width: 620px;
  margin: 0;
}
.details dt {
  padding-top: 3px;
  color: var(--blue);
  font-family: var(--mono-font);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.details dd { margin: 0; }

/* ---- FAQ (§4.13): native <details>, no JS ---------------------- */
.faq { max-width: 820px; }
.faq details {
  padding: 18px 0;
  border-top: 1px solid var(--rule-soft);
}
.faq details:last-child { border-bottom: 1px solid var(--rule-soft); }
.faq summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--display-font);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.25;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex-shrink: 0;
  color: var(--blue);
  font-family: var(--mono-font);
  font-size: 14px;
  line-height: 1.2;
}
.faq details[open] summary::after { content: "−"; font-size: 18px; line-height: 0.9; }
.faq details p {
  max-width: 720px;
  margin: 0;
  padding: 14px 0 4px;
  color: #333;
  font-size: 15px;
  line-height: 1.65;
}

/* ---- Final CTA (homepage .final-cta) -------------------------- */
.final { padding-top: 56px; padding-bottom: 64px; }
.final .h2 { margin-bottom: 24px; }
.final-lede {
  max-width: 620px;
  margin: 0;
  font-size: 16px;
}
.walk {
  display: grid;
  gap: 12px;
  margin: 32px 0 0;
}
.walk-label {
  padding-top: 14px;
  border-top: 1px solid var(--rule-soft);
  color: var(--red);
  font-family: var(--mono-font);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.walk ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.walk li {
  position: relative;
  padding: 6px 0 6px 28px;
  font-size: 16px;
}
.walk li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--red);
  font-family: var(--mono-font);
  font-size: 12px;
  line-height: 2.2;
}

/* ---- Footer (§4.15) ------------------------------------------ */
.footer {
  background: var(--ink);
  color: var(--ground);
  padding: 40px 22px 24px;
}
.footer .lockup { color: var(--ground); }
.footer .lockup-studios { border-color: rgba(247, 246, 240, 0.3); font-size: 14px; }
.footer-tag {
  margin: 8px 0 0;
  color: rgba(247, 246, 240, 0.65);
  font-size: 14px;
  font-style: italic;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--ui-font);
  font-size: 13px;
}
.footer-links a { color: var(--ground); text-decoration: none; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(247, 246, 240, 0.15);
  color: rgba(247, 246, 240, 0.5);
  font-family: var(--ui-font);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.footer-bottom a { color: inherit; text-decoration: none; }

/* ---- Plain pages (thanks, terms, privacy) -------------------- */
.prose { max-width: 680px; }
.prose h1 {
  margin-bottom: 20px;
  font-family: var(--display-font);
  font-size: 36px;
  line-height: 1.02;
  letter-spacing: -0.012em;
}
/* §2.2a: long-form body subheads use real Lora bold, not Caslon. */
.prose h2 {
  margin-top: 32px;
  font-family: var(--body-font);
  font-size: 19px;
}
.prose p,
.prose li { font-size: 16px; }
.prose .cta { display: inline-block; width: auto; }
.prose .meta {
  color: var(--muted);
  font-family: var(--ui-font);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ---- Tablet --------------------------------------------------- */
@media (min-width: 640px) {
  body { font-size: 16px; }
  .nav { padding: 18px 32px; }
  .lockup img { height: 24px; }
  .lockup-studios { font-size: 14px; }
  .masthead { padding: 10px 32px; font-size: 10px; }
  .section { padding: 64px 32px 72px; }
  .section-eyebrow { font-size: 13px; }
  .h2 { font-size: 44px; }
  .product h1 { font-size: 48px; }
  .hero-intro { font-size: 17px; }
  .pages { grid-template-columns: repeat(3, 1fr); padding: 36px 32px; }
  .section-intro,
  .final-lede { font-size: 17px; }
  .item-title { font-size: 26px; }
  .problems { grid-template-columns: 1fr 1fr; gap: 36px 40px; }
  .relief { font-size: 28px; }
  .step-numeral { font-size: 64px; }
  .cta { display: inline-block; width: auto; font-size: 13px; }
  .micro { text-align: left; }
  .walk { grid-template-columns: 140px 1fr; column-gap: 16px; }
  .walk ul { border-top: 1px solid var(--rule-soft); padding-top: 8px; }
  .walk li { font-size: 18px; }
  .footer { padding: 64px 32px 28px; }
}

/* ---- Desktop -------------------------------------------------- */
@media (min-width: 1024px) {
  .nav,
  .masthead { position: relative; margin: 0 48px; padding-left: 0; padding-right: 0; }
  .nav { padding-top: 22px; padding-bottom: 22px; }
  .section { padding: 96px 48px; }
  .product {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 56px;
    align-items: center;
    padding-top: 48px;
    padding-bottom: 72px;
  }
  .product-media { padding: 56px 40px 28px; }
  .product-media img { width: 78%; }
  .h2 { margin-bottom: 32px; font-size: 54px; }
  .product h1 { font-size: 60px; }
  .hero-intro { max-width: 620px; font-size: 18px; }
  .pages { gap: 40px; padding: 48px; }
  .trust-strip { flex-flow: row wrap; gap: 16px; font-size: 13px; }
  .item-tag { font-size: 12px; }
  .item-title { font-size: 30px; }
  .step {
    grid-template-columns: 120px 1fr 1fr;
    column-gap: 40px;
    align-items: start;
  }
  .step-numeral { font-size: 80px; grid-row: span 3; }
  .step .item-tag,
  .step .item-title { grid-column: 2; }
  .step-body { grid-column: 3; grid-row: 1 / span 3; }
  .faq summary { font-size: 20px; }
  .final { padding-top: 104px; padding-bottom: 112px; }
  .final .h2 { max-width: 760px; margin-bottom: 36px; font-size: 64px; }
  .walk { grid-template-columns: 172px 1fr; column-gap: 16px; }
  .footer { padding: 64px 48px 28px; }
}