/* ============================================================
   layout.css — header / footer / grid / page shell
   ============================================================ */

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

.container--narrow {
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

main {
  padding-block: var(--space-8) var(--space-9);
}

section { padding-block: var(--space-8); }
section + section { border-top: 1px solid var(--rule); }
section.is-drench + section:not(.is-drench),
section:not(.is-drench) + section.is-drench { border-top-color: transparent; }

.section-head {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

.section-head__num {
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: var(--tracking-loose);
  text-transform: uppercase;
  color: var(--muted);
}

.section-head__title {
  font-family: var(--font-display);
  font-size: var(--step-5);
  font-weight: 500;
  letter-spacing: var(--tracking-tight);
  line-height: var(--lh-display);
  text-wrap: balance;
  max-width: 22ch;
}

/* Sección drench (cuero) */
.is-drench {
  background: var(--drench);
  color: var(--drench-ink);
  position: relative;
}
.is-drench h1,
.is-drench h2,
.is-drench h3,
.is-drench h4 { color: var(--drench-ink); }
.is-drench .eyebrow,
.is-drench .meta { color: oklch(0.78 0.010 70); }
.is-drench .rule,
.is-drench .rule-strong { border-top-color: oklch(0.40 0.020 50); }
.is-drench a { color: var(--drench-ink); }

/* Surface alterna (pergamino) */
.is-pergamino { background: var(--surface); }

/* ============================ HEADER / NAV ============================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: oklch(from var(--bg) l c h / 0.86);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-2) var(--ease-out), background var(--dur-2) var(--ease-out);
}
.site-header.is-scrolled {
  border-bottom-color: var(--rule);
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-5);
  height: 72px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--ink);
}
.site-brand__mark {
  width: 28px; height: 28px;
  display: inline-grid; place-items: center;
  color: var(--accent);
  font-size: 1.4rem;
  line-height: 1;
}
.site-brand__name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: var(--tracking-flat);
  font-weight: 500;
  white-space: nowrap;
  display: inline-flex;
  align-items: baseline;
  gap: 0.25rem;
}
.site-brand__ampersand {
  font-style: italic;
  color: var(--primary);
  font-weight: 500;
}

/* "Precerutti" se muestra solo cuando hay espacio. */
.brand-full { display: inline; }
@media (max-width: 720px) {
  .brand-full { display: none; }
}

.site-nav { justify-self: center; }
.site-nav__list {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav__link {
  position: relative;
  display: inline-block;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.95rem;
  font-weight: 500;
  padding-block: 0.4rem;
  transition: color var(--dur-2) var(--ease-out);
}
.site-nav__link::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur-2) var(--ease-out);
}
.site-nav__link:hover::after,
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--primary); }

.site-header__contact {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-mono);
}
.site-header__contact i { font-size: 0.95rem; }
.site-header__contact:hover { color: var(--primary); }

.nav-toggle i { font-size: 1.15rem; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}

@media (max-width: 960px) {
  .site-header__inner {
    grid-template-columns: auto 1fr;
    height: 64px;
  }
  /* En mobile anulamos el centrado de la nav desktop para que,
     al abrir el menú, ocupe todo el ancho. La nav sigue siendo
     un grid item aunque esté position: fixed. */
  .site-nav { justify-self: stretch; }
  .site-nav,
  .site-header__contact { display: none; }
  .nav-toggle { display: inline-flex; justify-self: end; }

  .site-nav.is-open {
    display: block;
    position: fixed;
    /* Explicit top + height (no inset) para escapar del containing
       block que crea backdrop-filter en .site-header y para que
       el padding del nav no expanda la caja a 0 alto. */
    top: 64px;
    left: 0;
    right: 0;
    height: calc(100vh - 64px);
    height: calc(100dvh - 64px);
    background: var(--bg);
    padding: var(--space-7) var(--gutter);
    z-index: var(--z-overlay);
    overflow: auto;
    border-top: 1px solid var(--rule);
  }
  .site-nav.is-open .site-nav__list {
    flex-direction: column;
    gap: var(--space-5);
  }
  .site-nav.is-open .site-nav__link {
    font-family: var(--font-display);
    font-size: var(--step-3);
    font-weight: 400;
  }
}

/* ============================ HERO ============================ */

.hero {
  position: relative;
  padding-block: var(--space-9) var(--space-9);
  border-top: 0;
}
.hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-7);
}
.hero__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-5);
  align-items: end;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--step-7);
  letter-spacing: -0.03em;
  line-height: 0.98;
  max-width: 18ch;
  text-wrap: balance;
}
.hero__title em {
  font-style: italic;
  color: var(--primary);
  font-weight: 400;
}
.hero__meta {
  display: grid;
  gap: var(--space-2);
  text-align: right;
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: var(--tracking-loose);
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.hero__bottom {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-7);
  padding-top: var(--space-7);
  border-top: 1px solid var(--rule);
  align-items: end;
}
.hero__lede {
  font-family: var(--font-display);
  font-size: var(--step-3);
  line-height: 1.25;
  letter-spacing: var(--tracking-flat);
  color: var(--ink);
  max-width: 32ch;
  text-wrap: pretty;
}
.hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
}

.hero__marquee {
  margin-top: var(--space-8);
  padding-block: var(--space-4);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 6%, black 94%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 6%, black 94%, transparent);
}

@media (max-width: 720px) {
  .hero__bottom { grid-template-columns: 1fr; }
  .hero__actions { justify-content: flex-start; }
  .hero__meta { text-align: left; }
  .hero__top { grid-template-columns: 1fr; }
  .hero__title { font-size: clamp(2.6rem, 1.4rem + 8vw, 4.6rem); }
}

/* ============================ FOOTER ============================ */

.site-footer {
  background: var(--drench);
  color: var(--drench-ink);
  padding-block: var(--space-9) var(--space-6);
  position: relative;
}
.site-footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-7);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid oklch(0.40 0.020 50);
}
.site-footer__col h4 {
  font-family: var(--font-mono);
  font-size: var(--step--2);
  text-transform: uppercase;
  letter-spacing: var(--tracking-loose);
  color: oklch(0.80 0.012 70);
  font-weight: 500;
  margin-bottom: var(--space-4);
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-3); }
.site-footer__col a {
  color: var(--drench-ink);
  text-decoration: none;
  font-size: 0.95rem;
  position: relative;
  display: inline-block;
}
.site-footer__col a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-2) var(--ease-out);
}
.site-footer__col a:hover::after { transform: scaleX(1); }

.site-footer__brand {
  font-family: var(--font-display);
  font-size: var(--step-4);
  letter-spacing: var(--tracking-tight);
  line-height: 1.1;
  max-width: 24ch;
}
.site-footer__brand em {
  font-style: italic;
  color: oklch(0.78 0.040 45);
}

.site-footer__bottom {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-5);
  padding-top: var(--space-5);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: var(--tracking-loose);
  color: oklch(0.70 0.010 70);
}
.site-footer__bottom a {
  color: oklch(0.85 0.012 70);
  text-decoration: none;
  position: relative;
  display: inline-block;
  transition: color var(--dur-2) var(--ease-out);
}
.site-footer__bottom a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-2) var(--ease-out);
}
.site-footer__bottom a:hover { color: oklch(0.94 0.012 75); }
.site-footer__bottom a:hover::after { transform: scaleX(1); }

@media (max-width: 960px) {
  .site-footer__top { grid-template-columns: 1fr 1fr; gap: var(--space-5); }
  .site-footer__bottom { grid-template-columns: 1fr; gap: var(--space-3); }
}
@media (max-width: 560px) {
  .site-footer__top { grid-template-columns: 1fr; }
}

/* ============================ PAGE HEADER ============================ */

.page-header {
  padding-block: var(--space-9) var(--space-7);
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
  position: relative;
}
.page-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-7);
  align-items: end;
}
.page-header__num {
  font-family: var(--font-display);
  font-size: clamp(4rem, 1rem + 10vw, 8rem);
  line-height: 0.9;
  color: oklch(0.940 0.008 70);
  letter-spacing: -0.04em;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.page-header__num i {
  font-size: 0.35em;
  color: var(--primary);
  -webkit-text-stroke: 0;
}
.page-header__title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 1rem + 5vw, 4.2rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-wrap: balance;
  max-width: 16ch;
}
.page-header__title em { font-style: italic; color: var(--primary); }
.page-header__meta {
  font-family: var(--font-mono);
  font-size: var(--step--2);
  letter-spacing: var(--tracking-loose);
  text-transform: uppercase;
  color: var(--muted);
  text-align: right;
  white-space: nowrap;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.4rem;
}
.page-header__meta i {
  color: var(--accent);
  font-size: 1.5rem;
  text-transform: none;
  letter-spacing: 0;
}
.page-header__meta br { display: none; }
.page-header__meta span.muted { color: var(--ink-soft); letter-spacing: var(--tracking-mono); }
@media (max-width: 720px) {
  .page-header__inner { grid-template-columns: 1fr; gap: var(--space-4); }
  .page-header__meta { text-align: left; }
  .page-header__num { font-size: 5rem; }
}