/* Heredium Labs · herediumlabs.com
   «Obra que sigue en pie»: la página como registro de una obra de ingeniería que aún carga peso.
   Láminas generadas con IA y su alcance: docs/architecture/ADR-004-web-obra-en-pie.md */

:root {
  --hl-azul-legado: #1A2B4A;
  --hl-dorado: #C9A961;
  --hl-negro-tinta: #0F1724;
  --hl-gris-piedra: #5B6B82;
  --hl-pergamino: #F4F1EA;

  /* Intermedios por opacidad del Pergamino: Gris Piedra no alcanza 4.5:1 sobre fondo oscuro. */
  --soft: rgb(244 241 234 / 0.72);
  --rule: rgb(244 241 234 / 0.16);
  --rule-strong: rgb(244 241 234 / 0.55);
  /* Velo plano sobre las láminas para sostener el contraste del texto; nunca degradado. */
  --veil: rgb(15 23 36 / 0.42);

  --font-display: "Fjalla One", "Arial Narrow", sans-serif;
  --font-body: "Public Sans", system-ui, sans-serif;

  --gutter: clamp(1.25rem, 4vw, 3rem);
  --max: 80rem;
  --section-y: clamp(4.5rem, 9vw, 8rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  color-scheme: dark;
  accent-color: var(--hl-pergamino);
  scrollbar-color: var(--hl-gris-piedra) var(--hl-negro-tinta);
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 1rem; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--hl-negro-tinta);
  color: var(--hl-pergamino);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; text-underline-offset: 0.3em; text-decoration-thickness: 1px; }
figure { margin: 0; }

::selection { background: var(--hl-pergamino); color: var(--hl-negro-tinta); }
:focus-visible { outline: 2px solid var(--hl-pergamino); outline-offset: 3px; }

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

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

.skip {
  position: absolute; left: var(--gutter); top: -4rem; z-index: 20;
  background: var(--hl-pergamino); color: var(--hl-negro-tinta);
  padding: 0.6rem 1rem; text-decoration: none;
}
.skip:focus { top: 0.75rem; }

/* ---------- Tipografía ---------- */
h1, h2, h3 {
  font-family: var(--font-display); font-weight: 400;
  text-transform: uppercase; text-wrap: balance;
}
h2 { font-size: clamp(1.75rem, 1.2rem + 1.8vw, 2.25rem); line-height: 1.12; letter-spacing: 0.06em; }
h3 { font-size: clamp(1.375rem, 1.2rem + 0.6vw, 1.625rem); line-height: 1.2; letter-spacing: 0.03em; }
p { text-wrap: pretty; }

.label {
  display: block;
  font: 500 0.75rem/1.5 var(--font-body);
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--soft);
}

.gloss { font-weight: 300; font-style: italic; color: var(--soft); }

/* Código de lámina: numeración al margen, como el canto de un plano o de una película. */
.code {
  font: 500 0.6875rem/1.4 var(--font-body);
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--soft);
  font-variant-numeric: tabular-nums;
}

.icon {
  width: 1.125rem; height: 1.125rem; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.5;
  stroke-linecap: round; stroke-linejoin: round;
}

/* ---------- Acciones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  min-height: 3rem; padding: 0.75rem 1.4rem;
  font: 500 0.9375rem/1 var(--font-body); letter-spacing: 0.01em;
  text-decoration: none;
  background: var(--hl-pergamino); color: var(--hl-negro-tinta);
  border: 1px solid transparent; border-radius: 0;
  transition: background-color 0.25s var(--ease-out);
}
.btn:hover { background: #FFFFFF; }
.btn .icon:last-child { transition: transform 0.3s var(--ease-out); }
.btn:hover .icon:last-child { transform: translateX(3px); }
.btn--compact { min-height: 2.75rem; padding-inline: 1.1rem; }

.link {
  display: inline-block; padding-block: 0.5rem;
  font-size: 0.9375rem; font-weight: 500;
  text-decoration: underline; text-decoration-color: var(--rule-strong);
  transition: text-decoration-color 0.25s var(--ease-out);
}
.link .icon { display: inline-block; width: 1rem; height: 1rem; margin-left: 0.3rem; vertical-align: -0.15em; transition: transform 0.3s var(--ease-out); }
.link:hover { text-decoration-color: currentColor; }
.link:hover .icon { transform: translateX(3px); }

/* ---------- Encabezado (sobre la lámina del hero) ---------- */
.site-header { position: absolute; inset: 0 0 auto; z-index: 10; }
.site-header--page { position: static; background: var(--hl-azul-legado); }
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
  min-height: 5.5rem;
  border-bottom: 1px solid var(--rule);
}
.brand img { height: 3.25rem; width: auto; }

.site-nav ul { display: flex; gap: clamp(1.25rem, 3vw, 2.5rem); }
.site-nav a, .mobile-nav a {
  display: block; padding-block: 0.5rem;
  font-size: 0.9375rem; text-decoration: none; color: var(--soft);
  transition: color 0.25s var(--ease-out);
}
.site-nav a:hover, .mobile-nav a:hover { color: var(--hl-pergamino); text-decoration: underline; }

.mobile-nav { display: none; background: var(--hl-negro-tinta); border-bottom: 1px solid var(--rule); }
.mobile-nav ul { display: flex; gap: 1.5rem; overflow-x: auto; scrollbar-width: none; }
.mobile-nav a { white-space: nowrap; padding-block: 0.9rem; }

/* ---------- Hero: lámina 01 a sangre ---------- */
.hero {
  position: relative; isolation: isolate;
  display: flex; flex-direction: column; justify-content: flex-end;
  min-height: min(100svh, 60rem);
  padding-top: 8rem;
  overflow: hidden;
}
.hero__plate { position: absolute; inset: 0; z-index: -1; }
.hero__plate img { width: 100%; height: 100%; object-fit: cover; object-position: 68% 40%; }
.hero__plate::after { content: ""; position: absolute; inset: 0; background: var(--veil); }
.hero__plate .code {
  position: absolute; z-index: 1; right: var(--gutter); top: 50%;
  writing-mode: vertical-rl; transform: translateY(-50%);
}

.hero__body { padding-bottom: clamp(2.5rem, 5vw, 4rem); }
.hero__title {
  font-size: clamp(2.75rem, 1.4rem + 6vw, 5rem);
  line-height: 0.98; letter-spacing: 0.12em;
  margin-right: -0.12em;
}
.hero__title > span { display: block; }
.hero__point { color: var(--hl-dorado); }
.hero__lede {
  max-width: 34rem; margin-top: 1.75rem;
  font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.1875rem);
  color: var(--hl-pergamino);
}
.hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.75rem; margin-top: 2rem; }

.figures {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule-strong);
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}
.figures > div {
  display: grid; align-content: start; gap: 0.25rem;
  padding: 1.1rem 1.25rem 0;
  border-left: 1px solid var(--rule);
}
.figures > div:first-child { border-left: 0; padding-left: 0; }
.figures dd {
  order: -1;
  font: 400 clamp(1.75rem, 1.5rem + 1vw, 2.25rem)/1 var(--font-display);
  letter-spacing: 0.04em; font-variant-numeric: tabular-nums;
}
.figures dt { font: 500 0.75rem/1.4 var(--font-body); letter-spacing: 0.12em; text-transform: uppercase; color: var(--soft); }

/* ---------- Secciones ---------- */
.section { padding-block: var(--section-y); }
.section--azul { background: var(--hl-azul-legado); }

.section__head {
  display: grid; grid-template-columns: 5fr 6fr; gap: 1.5rem 4rem; align-items: end;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section__head p { color: var(--soft); max-width: 36rem; }

/* Láminas */
.plate { position: relative; }
.plate img { width: 100%; height: auto; background: var(--hl-azul-legado); }
.plate .code {
  position: absolute; left: 0; bottom: 0;
  padding: 0.45rem 0.75rem;
  background: var(--hl-negro-tinta); color: var(--hl-pergamino);
}

/* Tríptico a sangre y tres miembros de la estructura */
.lines { padding-block: var(--section-y); }
.triptych {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--rule);
  border-block: 1px solid var(--rule);
}
.triptych img { aspect-ratio: 1; object-fit: cover; }
.members { display: grid; grid-template-columns: repeat(3, 1fr); }
/* Mismas tercias a sangre que el tríptico: cada filete cae bajo una junta. */
.member {
  display: flex; flex-direction: column;
  padding: 2.5rem var(--gutter) 0;
  border-left: 1px solid var(--rule);
}
.member:first-child { border-left: 0; padding-left: max(var(--gutter), calc((100vw - var(--max)) / 2 + var(--gutter))); }
.member__name {
  font-size: clamp(2.25rem, 1.6rem + 2vw, 3rem);
  line-height: 1; letter-spacing: 0.15em;
}
.member__gloss { margin-top: 0.6rem; font-size: 0.9375rem; color: var(--soft); }
.member__gloss em { font-weight: 300; }
.member__text { margin-top: 1rem; margin-bottom: 1.25rem; max-width: 26rem; }
.member .link { margin-top: auto; align-self: flex-start; }

/* Principios */
.principles__grid { display: grid; grid-template-columns: 4fr 8fr; gap: 3rem clamp(3rem, 6vw, 6rem); }
.principles__head .gloss { margin-top: 1.25rem; padding-top: 1.25rem; border-top: 1px solid var(--rule); max-width: 20rem; }
.principles__list { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem clamp(2rem, 4vw, 3.5rem); }
.principles__list li { border-top: 1px solid var(--rule-strong); padding-top: 1.5rem; }
.principles__list p { margin-top: 0.75rem; color: var(--soft); max-width: 30rem; }

/* Ficha técnica de productos */
.spec { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.spec thead th {
  padding: 0 1.25rem 0.9rem 0; text-align: left;
  font: 500 0.75rem/1.5 var(--font-body); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--soft);
  border-bottom: 1px solid var(--rule-strong);
}
.spec tbody th, .spec td {
  padding: 1.75rem 1.25rem 1.75rem 0;
  text-align: left; vertical-align: top;
  border-bottom: 1px solid var(--rule);
}
.spec tbody th {
  width: 24%;
  font: 400 clamp(1.375rem, 1.2rem + 0.6vw, 1.625rem)/1.2 var(--font-display);
  letter-spacing: 0.03em; text-transform: uppercase;
}
.spec td:nth-of-type(1) { width: 18%; color: var(--soft); }
.spec td:nth-of-type(2) { width: 36%; }
.spec__tech { font-size: 0.8125rem; font-weight: 500; letter-spacing: 0.02em; color: var(--soft); }
.spec__tech em { font-weight: 400; }

/* Testimonio */
.voice__inner { max-width: 60rem; }
.voice__quote p {
  font-size: clamp(1.375rem, 1rem + 1.4vw, 2rem); font-weight: 300; line-height: 1.45;
}
.voice__quote p::before { content: "«"; }
.voice__quote p::after { content: "»"; }
.voice__who {
  margin-top: 2rem; padding-top: 1.25rem; border-top: 1px solid var(--rule);
  font-size: 0.875rem; color: var(--soft);
}
.voice__name { font-weight: 500; color: var(--hl-pergamino); margin-right: 0.75rem; }

/* Estudio: placa de obra */
.studio__grid { display: grid; grid-template-columns: 7fr 5fr; gap: 3rem clamp(3rem, 6vw, 5.5rem); align-items: center; }
.studio__body h2 { margin-bottom: 1.75rem; }
.studio__body p + p { margin-top: 1rem; }
.studio__body > p { color: var(--soft); max-width: 34rem; }
/* Cartela de la obra: firma, oficio y taller en celdas filetadas */
.titleblock {
  display: grid; grid-template-columns: 1fr 1fr;
  margin-top: 2.25rem;
  border: 1px solid var(--rule-strong);
}
.titleblock > div { padding: 0.85rem 1rem; border-top: 1px solid var(--rule); }
.titleblock > div + div + div { border-left: 1px solid var(--rule); }
.titleblock > .titleblock__sign { grid-column: 1 / -1; border-top: 0; }
.titleblock dt { font: 500 0.6875rem/1.5 var(--font-body); letter-spacing: 0.12em; text-transform: uppercase; color: var(--soft); }
.titleblock dd { margin: 0.2rem 0 0; font-size: 0.9375rem; }
.titleblock__sign dd {
  font: 400 clamp(1.5rem, 1.2rem + 1vw, 2rem)/1.1 var(--font-display);
  letter-spacing: 0.15em; text-transform: uppercase;
}

/* Contacto */
.contact {
  display: grid; grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--rule);
}
.contact__body {
  align-self: center;
  padding: var(--section-y) clamp(2rem, 5vw, 5rem) var(--section-y) max(var(--gutter), calc((100vw - var(--max)) / 2 + var(--gutter)));
}
.contact__body h2 { font-size: clamp(2rem, 1.3rem + 2.4vw, 3rem); line-height: 1.05; letter-spacing: 0.08em; }
.contact__body p { margin-block: 1.5rem 2rem; color: var(--soft); max-width: 28rem; }
.contact__plate { display: flex; flex-direction: column; }
.contact__plate img { flex: 1; height: 100%; min-height: 22rem; object-fit: cover; object-position: 75% 50%; }

/* ---------- Pie ---------- */
.site-footer { background: var(--hl-azul-legado); padding-block: 3.5rem; border-top: 1px solid var(--rule); }
.site-footer__grid { display: grid; grid-template-columns: 1.4fr 2fr 1fr; gap: 2rem 3rem; align-items: start; }
.foot-sign__mark { font: 400 1.375rem/1 var(--font-display); letter-spacing: 0.15em; text-transform: uppercase; }
.foot-sign__tag { margin-block: 0.6rem 0.9rem; font-size: 0.9375rem; font-weight: 300; font-style: italic; color: var(--soft); }
.foot-nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.75rem; }
.foot-nav a { display: block; padding-block: 0.4rem; font-size: 0.9375rem; color: var(--soft); text-decoration: none; }
.foot-nav a:hover { color: var(--hl-pergamino); text-decoration: underline; }
.foot-meta { font-size: 0.8125rem; line-height: 1.8; color: var(--soft); text-align: right; }
.foot-meta span { font-style: italic; font-weight: 300; }

/* ---------- Movimiento: un solo momento. La lámina se revela, las cifras se fijan sin interpolar y el punto llega al final ---------- */
@media (prefers-reduced-motion: no-preference) {
  .hero__plate img { animation: develop 1.8s var(--ease-out) both; }
  .hero__point { animation: land 0.01s steps(1) 1.5s both; }
  .figures dd { animation: strike 0.01s steps(1) both; }
  .figures > div:nth-child(1) dd { animation-delay: 0.9s; }
  .figures > div:nth-child(2) dd { animation-delay: 1.05s; }
  .figures > div:nth-child(3) dd { animation-delay: 1.2s; }

}
@keyframes develop { from { opacity: 0; transform: scale(1.04); } }
@keyframes land { from { opacity: 0; } }
@keyframes strike { from { opacity: 0; } }

/* ---------- Páginas legales ---------- */
.legal { max-width: 46rem; }
.legal__head { padding-bottom: 2rem; border-bottom: 1px solid var(--rule); }
.legal h1 { font-size: clamp(2.25rem, 1.6rem + 2.4vw, 3rem); line-height: 1.05; letter-spacing: 0.08em; }
.legal__meta { margin-top: 0.75rem; font-size: 0.875rem; color: var(--soft); }
.legal__body { display: grid; gap: 1rem; margin-top: 2.5rem; }
.legal__body h2 { margin-top: 2rem; font-size: clamp(1.375rem, 1.2rem + 0.6vw, 1.625rem); scroll-margin-top: 2rem; }
.legal__body h3 { margin-top: 0.75rem; font-size: 1.25rem; }
.legal__body p, .legal__body li { color: var(--soft); }
.legal__body strong { font-weight: 600; color: var(--hl-pergamino); }
.legal__body ul, .legal__body ol { display: grid; gap: 0.5rem; padding-left: 1.25rem; }
.legal__body ul { list-style: disc; }
.legal__body ol { list-style: decimal; }
.legal__body a { color: var(--hl-pergamino); }

/* ---------- Responsive ---------- */
@media (max-width: 68rem) {
  .site-nav { display: none; }
  .mobile-nav { display: block; }
}

@media (max-width: 56rem) {
  .section__head, .principles__grid, .studio__grid { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; }
  .members { grid-template-columns: 1fr; }
  .member, .member:first-child { padding: 2rem var(--gutter) 0; border-left: 0; }
  .member + .member { margin-top: 2rem; border-top: 1px solid var(--rule); }
  .contact__body { padding: var(--section-y) var(--gutter); }
  .contact__plate img { min-height: 16rem; aspect-ratio: 3 / 2; }
  .site-footer__grid { grid-template-columns: 1fr; }
  .foot-meta { text-align: left; }
  .hero__plate .code { writing-mode: horizontal-tb; transform: none; top: 6.5rem; }

  .spec thead { display: none; }
  .spec, .spec tbody, .spec tr, .spec th, .spec td { display: block; width: auto !important; }
  .spec tbody tr { padding-block: 1.5rem; border-bottom: 1px solid var(--rule); }
  .spec tbody tr:first-child { border-top: 1px solid var(--rule-strong); }
  .spec tbody th, .spec td { padding: 0; border: 0; }
  .spec td { margin-top: 0.75rem; }
  .spec td::before {
    content: attr(data-label); display: block;
    font: 500 0.6875rem/1.5 var(--font-body); letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--soft);
  }
}

@media (max-width: 40rem) {
  body { font-size: 1rem; }
  .site-header__inner { min-height: 4.5rem; }
  .brand img { height: 2.75rem; }
  .hero { min-height: 100svh; }
  .hero__plate img { object-position: 74% 40%; }
  :root { --veil: rgb(15 23 36 / 0.55); }
  .triptych { grid-template-columns: 1fr; }
  .triptych img { aspect-ratio: 4 / 3; }
  .principles__list { grid-template-columns: 1fr; }
  .figures > div { padding-inline: 0.75rem; }
  .figures dt { font-size: 0.6875rem; letter-spacing: 0.08em; }
}

@media (max-width: 26rem) {
  .btn--compact .btn__label { display: none; }
  .btn--compact { padding-inline: 0.85rem; }
}