/* ============================================================
   Comprador: shared design system
   Used by the landing page and the guide pages so the aesthetic
   is one source of truth. Page-specific layout lives in each
   page's own <style> block.
   ============================================================ */

/* ---- self-hosted fonts (SIL OFL): no CDN, nothing leaves the visitor's machine ---- */
@font-face { font-family: "Bona Nova"; font-style: normal; font-weight: 400; font-display: swap;
             src: url("fonts/bona-nova-400.woff2") format("woff2"); }
@font-face { font-family: "Bona Nova"; font-style: italic; font-weight: 400; font-display: swap;
             src: url("fonts/bona-nova-400italic.woff2") format("woff2"); }
@font-face { font-family: "Bona Nova"; font-style: normal; font-weight: 700; font-display: swap;
             src: url("fonts/bona-nova-700.woff2") format("woff2"); }
@font-face { font-family: "Fasthand"; font-style: normal; font-weight: 400; font-display: swap;
             src: url("fonts/fasthand-400.woff2") format("woff2"); }
@font-face { font-family: "IM Fell Double Pica SC"; font-style: normal; font-weight: 400; font-display: swap;
             src: url("fonts/im-fell-double-pica-sc-400.woff2") format("woff2"); }

:root {
  /* ---- type ---- */
  --font-body:    "Bona Nova", Georgia, "Times New Roman", serif;
  --font-brand:   "IM Fell Double Pica SC", "Bona Nova", Georgia, serif;
  --font-ui:      -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  /* ---- anchor: cream #f4ebe1; everything offset from --base-h ---- */
  --base:   #f4ebe1;
  --base-h: 21;

  --page-bg:    var(--base);
  --bg:         hsl(calc(var(--base-h) + 9), 45%, 92%);   /* parchment sheet */
  --dot:        hsl(var(--base-h), 50%, 76%);
  --sheet-edge: hsl(var(--base-h), 38%, 90%);
  --card:       hsl(var(--base-h), 48%, 93%);
  --rule:       hsl(var(--base-h), 32%, 86%);

  --text:      hsl(var(--base-h), 22%, 13%);
  --muted:     hsl(var(--base-h), 12%, 38%);
  --faint:     hsl(var(--base-h), 10%, 55%);
  --on-accent: hsl(var(--base-h), 60%, 98%);

  --accent:       hsl(calc(var(--base-h) - 11), 64%, 44%);   /* pomegranate bloom */
  --accent-hover: hsl(calc(var(--base-h) - 11), 66%, 36%);

  --link:       hsl(calc(var(--base-h) + 171), 34%, 36%);    /* museum teal complement */
  --link-hover: hsl(calc(var(--base-h) + 171), 40%, 28%);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
  margin: 0; padding: 0;
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background-color: var(--page-bg);
}

/* fixed engraving backdrop, cover-fit to a box 15% larger than the viewport
   on both axes (aspect-ratio-safe, iOS-safe). --backdrop is set by script.js. */
body::before {
  content: "";
  position: fixed;
  top: -7.5%; left: -7.5%;
  width: 115%; height: 115%;
  z-index: -1;
  background-image: var(--backdrop, url("images/backdrops/pdia-c81e576a-9cba-43b1-90cf-836d27e06730.jpg"));
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }
img { max-width: 100%; height: auto; }

/* the sheet: content floats above the backdrop */
main {
  max-width: 920px;
  margin: 48px auto;
  padding: 0 48px;
  background: var(--bg);
  border: 1px solid var(--sheet-edge);
  border-radius: 18px;
  box-shadow: 0 30px 80px -32px rgba(120,60,30,0.45),
              0 2px 10px rgba(120,60,30,0.10);
  overflow: hidden;
}

/* framed screenshot */
.shot img { width: 100%; border-radius: 12px; display: block; }

/* download button */
.cta { display: flex; gap: 14px; justify-content: center; align-items: center;
       flex-wrap: wrap; margin: 8px 0 6px; }
.btn {
  display: inline-block; padding: 13px 30px; border-radius: 980px;
  font-size: 1.05rem; font-weight: 600;
  background: var(--accent); color: var(--on-accent);
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--link); padding: 13px 18px; }
.btn.ghost:hover { background: transparent; text-decoration: underline; }

/* footer */
footer { text-align: center; padding: 40px 0 80px; color: var(--faint);
         font-size: 0.9rem; max-width: 40em; margin: 0 auto; }
footer .platform { color: var(--muted); margin-bottom: 1.8em; }
footer .privacy { font-size: 0.78rem; color: var(--faint); letter-spacing: 0.02em; }
footer .links { margin: 0 0 1.6em; }
footer .links a { margin: 0 10px; color: var(--muted); }
footer .links a.nav { color: var(--link); }
footer .links span.nav { margin: 0 10px; color: var(--faint); }

/* Fun Mode: swaps the whole page to Fasthand; the brand wordmark holds via --font-brand */
html.fun { --font-body: "Fasthand", "Bona Nova", cursive; }
.funlinks {
  font: inherit; color: var(--muted); background: none; border: 0;
  padding: 0; margin: 0 10px; cursor: pointer; -webkit-appearance: none; appearance: none;
}
.funlinks:hover { color: var(--link-hover); text-decoration: underline; }

.brand { font-family: var(--font-brand); font-style: normal; }   /* "Comprador" wordmark in running text */

@media (max-width: 600px) {
  main { margin: 14px; padding: 0 22px; border-radius: 14px; }
}