/* ExxerCube Prisma — companion page
   Direction: Mexican administrative paperwork. Paper, ink, rules — and one loud element,
   the violet "sello" (receipt stamp) used as the reconciliation mark. */

:root {
  --paper: #F6F7F5;
  --sheet: #FFFFFF;
  --ink: #1C2433;
  --ink-soft: #4A5466;
  --sello: #5B3D8F;
  --carbon: #2E5B96;
  --conflict: #A86A12;
  --ok: #2F6B4F;
  --rule: #CDD2D8;
  --band: #E9ECEF;

  --font: "Libre Franklin", "Helvetica Neue", Arial, sans-serif;
  /* Modular scale, ratio 1.25 from 18px body */
  --fs-small: 0.889rem;
  --fs-body: 1.125rem;
  --fs-h3: 1.25rem;
  --fs-h2: 2rem;
  --fs-h1: clamp(2.25rem, 1.4rem + 3.2vw, 3.6rem);

  --wrap: 72rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { line-height: 1.12; margin: 0 0 0.6em; font-weight: 800; letter-spacing: -0.015em; }
h1 { font-size: var(--fs-h1); letter-spacing: -0.025em; max-width: 16ch; }
h1, h2 { text-wrap: balance; }
/* Spanish runs ~20% longer; give it a wider measure and a step smaller display size */
html[lang^="es"] h1 { max-width: 19ch; font-size: clamp(2.1rem, 1.3rem + 2.6vw, 3.2rem); }
h2 { font-size: var(--fs-h2); max-width: 22ch; }
h3 { font-size: var(--fs-h3); font-weight: 600; letter-spacing: 0; }
p { margin: 0 0 1em; max-width: 68ch; }
code { font-size: 0.92em; background: var(--band); padding: 0.05em 0.3em; border-radius: 3px; }

a { color: var(--carbon); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--sello); outline-offset: 3px; border-radius: 2px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }

.skip { position: absolute; left: -999px; top: 0.5rem; background: var(--ink); color: #fff; padding: 0.5rem 1rem; z-index: 10; }
.skip:focus { left: 0.5rem; }

/* Header */
.top { border-bottom: 1px solid var(--rule); background: var(--paper); }
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: 4rem; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: -0.01em; }
.brand-mark { width: 1.6rem; height: 1.6rem; color: var(--sello); }
.top-nav { display: flex; gap: 1.4rem; flex-wrap: wrap; font-size: var(--fs-small); }
.top-nav a { color: var(--ink-soft); text-decoration: none; }
.top-nav a:hover { color: var(--ink); text-decoration: underline; }
.top-nav .nav-repo { color: var(--ink); font-weight: 600; }
.top-nav .nav-lang { color: var(--sello); font-weight: 600; padding-left: 1.4rem; border-left: 1px solid var(--rule); }

/* Buttons */
.actions, .cta-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }
.btn { display: inline-block; padding: 0.8rem 1.35rem; font-weight: 600; font-size: 1rem; text-decoration: none; border-radius: 4px; border: 2px solid var(--ink); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: #2c3850; border-color: #2c3850; }
.btn-quiet { background: transparent; color: var(--ink); }
.btn-quiet:hover { background: var(--sheet); }

/* Hero */
.hero { padding: clamp(3rem, 6vw, 5.5rem) 0 clamp(3rem, 6vw, 5rem); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.lede { font-size: 1.2rem; color: var(--ink-soft); line-height: 1.6; }

.case { margin: 0; position: relative; display: grid; gap: 0; }
.paper {
  background: var(--sheet);
  border: 1px solid var(--rule);
  padding: 1.4rem 1.5rem 1.1rem;
  font-size: 0.86rem;
  line-height: 1.55;
  color: #333a45;
  box-shadow: 0 1px 0 var(--rule), 0 14px 30px -22px rgba(28, 36, 51, 0.45);
  transform: rotate(-0.6deg);
  transform-origin: top left;
}
.paper-head { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; border-bottom: 1px solid var(--rule); padding-bottom: 0.6rem; margin-bottom: 0.8rem; color: var(--ink-soft); }
.paper-folio { border: 1px solid var(--ink-soft); padding: 0 0.4rem; color: var(--ink); }
.paper-line { margin: 0 0 0.25rem; }
.paper-body { margin: 0.6rem 0 0; }
.paper-body.faint { color: #6b7380; }
.paper mark { background: rgba(91, 61, 143, 0.12); color: var(--ink); padding: 0 0.15em; border-bottom: 1.5px solid var(--sello); }

.record {
  background: var(--sheet);
  border: 1px solid var(--ink);
  margin: -1.4rem 0 0 clamp(1rem, 6vw, 3.5rem);
  padding: 1rem 1.25rem 0.5rem;
  position: relative;
  z-index: 1;
}
.record-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 0.4rem; font-weight: 600; }
.record dl { margin: 0; }
.record dl > div { display: grid; grid-template-columns: 6.5rem 1fr; gap: 1rem; padding: 0.45rem 0; border-top: 1px solid var(--band); font-size: 0.95rem; }
.record dt { color: var(--ink-soft); }
.record dd { margin: 0; font-weight: 500; }
.record .due dd { font-weight: 800; }

/* The one loud element: the sello */
.sello {
  display: inline-block;
  flex: none;
  color: var(--sello);
  border: 3px double var(--sello);
  border-radius: 6px;
  padding: 0.35rem 0.7rem;
  font-weight: 800;
  font-size: 0.82rem;
  line-height: 1.25;
  text-align: center;
  transform: rotate(-7deg);
  opacity: 0.92;
  mix-blend-mode: multiply;
  animation: stamp 520ms cubic-bezier(.2, 1.4, .4, 1) 700ms both;
}
@keyframes stamp {
  from { transform: rotate(-7deg) scale(1.9); opacity: 0; }
  60% { opacity: 0.95; }
  to { transform: rotate(-7deg) scale(1); opacity: 0.92; }
}

.case figcaption { margin-top: 0.9rem; font-size: var(--fs-small); color: var(--ink-soft); padding-left: clamp(1rem, 6vw, 3.5rem); }

/* Sections */
.section { padding: clamp(3.5rem, 7vw, 6rem) 0; border-top: 1px solid var(--rule); }
.section.alt { background: var(--sheet); }
.section-intro { color: var(--ink-soft); margin-bottom: 2.5rem; }
.band { background: var(--ink); color: #E8EBF0; padding: clamp(3rem, 6vw, 4.5rem) 0; }
.band h2 { color: #fff; }
.band p { font-size: 1.2rem; line-height: 1.65; color: #D4D9E1; max-width: 62ch; }

/* Demo: a screen on a sheet, the sello as the play button, and a numbered playlist (the videos are a sequence) */
.demo { background: var(--sheet); }
.demo-grid { display: grid; grid-template-columns: minmax(0, 1.8fr) minmax(0, 1fr); gap: clamp(1.75rem, 4vw, 3rem); align-items: start; }
.stage { margin: 0; }
.screen {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--ink);
  border: 1px solid var(--ink);
  overflow: hidden;
  box-shadow: 0 1px 0 var(--rule), 0 18px 36px -24px rgba(28, 36, 51, 0.55);
}
.screen img { display: block; width: 100%; height: 100%; object-fit: cover; }
.screen iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border: 0;
  padding: 0;
  cursor: pointer;
  background: linear-gradient(rgba(28, 36, 51, 0.05), rgba(28, 36, 51, 0.32));
  font: inherit;
}
.play:focus-visible { outline: none; }
.play-stamp {
  display: grid;
  justify-items: center;
  gap: 0.1rem;
  min-width: 8.5rem;
  padding: 0.7rem 1.5rem 0.6rem;
  background: var(--sheet);
  color: var(--sello);
  border: 4px double var(--sello);
  border-radius: 8px;
  font-weight: 800;
  font-size: 1.6rem;
  line-height: 1.1;
  transform: rotate(-7deg);
  box-shadow: 0 10px 24px -12px rgba(28, 36, 51, 0.7);
  transition: transform 160ms ease;
}
.play-stamp small { font-size: 0.85rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.play:hover .play-stamp { transform: rotate(-4deg) scale(1.05); }
.play:focus-visible .play-stamp { outline: 3px solid var(--sheet); outline-offset: 4px; }
.stage figcaption { margin-top: 1.25rem; }
.stage figcaption h3 { margin-bottom: 0.3rem; }
.stage figcaption p { color: var(--ink-soft); font-size: 1rem; margin: 0; }
.stage .demo-status:not(:empty) { margin-top: 0.6rem; color: var(--sello); font-weight: 600; }

.playlist { list-style: none; counter-reset: clip; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.playlist li { counter-increment: clip; }
.playlist a {
  display: grid;
  grid-template-columns: 1.75rem minmax(0, 1fr) auto;
  gap: 0.5rem;
  align-items: baseline;
  padding: 0.95rem 0.75rem;
  border-bottom: 1px solid var(--rule);
  position: relative;
  color: var(--ink);
  text-decoration: none;
  font-size: 1rem;
}
.playlist a::before { content: counter(clip); font-weight: 800; color: var(--sello); }
.playlist a:hover { background: var(--paper); }
.playlist a[aria-current="true"] { background: var(--paper); box-shadow: inset 3px 0 0 var(--sello); font-weight: 700; }
.pl-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.pl-time { color: var(--ink-soft); font-size: var(--fs-small); font-weight: 400; font-variant-numeric: tabular-nums; }

/* Pipeline: a real sequence, so it is numbered */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2.5rem 2.5rem; }
.steps li { counter-increment: step; position: relative; padding-top: 3rem; border-top: 2px solid var(--ink); }
.steps li::before { content: counter(step); position: absolute; top: 0.6rem; left: 0; font-weight: 800; font-size: 1.5rem; color: var(--sello); }
.steps p { color: var(--ink-soft); font-size: 1rem; }

/* Reconciliation table */
.recon-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.recon { border: 1px solid var(--ink); background: var(--paper); font-size: 0.95rem; }
.recon-row { display: grid; grid-template-columns: 6.5rem 1fr 7.5rem; gap: 0.75rem; padding: 0.7rem 1rem; border-top: 1px solid var(--rule); align-items: baseline; }
.recon-head { border-top: 0; color: var(--ink-soft); font-size: var(--fs-small); }
.recon .val { font-variant-numeric: tabular-nums; letter-spacing: 0.02em; overflow-wrap: anywhere; }
.recon .val em { font-style: normal; color: var(--conflict); font-weight: 800; border-bottom: 2px solid var(--conflict); }
.recon .ok { color: var(--ok); font-weight: 600; }
.recon .warn { color: var(--conflict); font-weight: 600; }
.recon-out { background: var(--sheet); border-top: 2px solid var(--ink); font-weight: 600; }
.recon-out span:last-child { color: var(--sello); }

/* Trust */
.trust-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2.5rem 4rem; margin-top: 2rem; }
.trust-grid p { color: var(--ink-soft); font-size: 1rem; }
.trust-grid h3 { padding-left: 0.9rem; border-left: 3px solid var(--sello); }

/* Engineering facts */
.eng-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.facts { margin: 0; border-top: 2px solid var(--ink); }
.facts > div { display: grid; grid-template-columns: 8rem 1fr; gap: 1rem; align-items: baseline; padding: 1rem 0; border-bottom: 1px solid var(--rule); }
.facts dt { font-weight: 800; font-size: 1.75rem; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.facts dd { margin: 0; color: var(--ink-soft); font-size: 1rem; }

/* CTA */
.cta { background: var(--sheet); border-top: 2px solid var(--ink); }
.cta-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 2rem 4rem; align-items: center; }
.cta-actions { flex-direction: column; align-items: flex-start; margin-top: 0; }

/* Footer */
.foot { border-top: 1px solid var(--rule); padding: 2.5rem 0 3rem; font-size: var(--fs-small); color: var(--ink-soft); }
.foot-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 1rem 3rem; }
.foot p { margin: 0; }

/* Responsive */
@media (max-width: 900px) {
  .hero-grid, .recon-grid, .eng-grid, .cta-grid, .foot-grid, .demo-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-actions { flex-direction: row; }
}
@media (max-width: 600px) {
  :root { --fs-h2: 1.6rem; }
  .steps, .trust-grid { grid-template-columns: 1fr; }
  .top-nav a:not(.nav-repo):not(.nav-lang) { display: none; }
  .top-nav .nav-lang { padding-left: 1rem; }
  .record { margin: 0.75rem 0 0 0.5rem; }
  .record dl > div { grid-template-columns: 5.2rem 1fr; }
  .recon-row { grid-template-columns: 4.6rem 1fr; }
  .recon-row > span:last-child { grid-column: 2; }
  .facts > div { grid-template-columns: 6.2rem 1fr; }
  .paper { transform: none; }
  .play-stamp { min-width: 0; font-size: 1.2rem; padding: 0.5rem 1rem 0.45rem; }
}