@layer layout {
  .wrap {
    width: 100%;
    padding-inline: var(--gutter);
  }

  /* Retícula de 12 columnas; en móvil todo ocupa el ancho completo. */
  .grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    column-gap: var(--col-gap);
  }

  @media (min-width: 60rem) {
    .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  }

  .section-y { padding-block: var(--section-y); }

  /* Header fijo */
  .site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 50;
    height: var(--header-h);
    color: var(--blanco);
    background: var(--petroleo-hondo);
    transition: background-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
  }
  :where(.js) .site-header:not([data-scrolled]):not([data-open]) {
    background: transparent;
  }
  .site-header[data-scrolled] { box-shadow: 0 1px 0 rgb(255 255 255 / .1); }

  .site-header__bar {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    padding-inline: var(--gutter);
  }
  .site-header__brand { display: block; line-height: 0; position: relative; z-index: 2; }
  .site-header__logo { height: 3.25rem; width: auto; }

  .site-nav__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem clamp(1.25rem, 2.6vw, 2.75rem);
    padding: 0;
    margin: 0;
    list-style: none;
  }

  .site-nav__link {
    position: relative;
    display: inline-block;
    padding-block: 0.5rem;
    font-size: var(--fs-small);
    font-weight: 500;
    letter-spacing: 0.01em;
    text-decoration: none;
  }
  .site-nav__link::after {
    content: "";
    position: absolute;
    inset: auto 0 0.1rem 0;
    height: 2px;
    background: var(--senal);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-base) var(--ease);
  }
  .site-nav__link:hover::after,
  .site-nav__link[aria-current="page"]::after { transform: scaleX(1); }

  .menu-toggle { display: none; }

  @media (max-width: 59.99rem) {
    :where(.js) .site-header .menu-toggle {
      position: relative;
      z-index: 2;
      display: inline-flex;
      align-items: center;
      gap: 0.75rem;
      padding: 0.6rem 0;
      font-size: var(--fs-small);
      font-weight: 600;
    }
    .menu-toggle__icon {
      position: relative;
      width: 1.5rem;
      height: 0.75rem;
    }
    .menu-toggle__icon span {
      position: absolute;
      left: 0;
      width: 100%;
      height: 2px;
      background: currentColor;
      transition: transform var(--t-base) var(--ease), top var(--t-base) var(--ease);
    }
    .menu-toggle__icon span:first-child { top: 0; }
    .menu-toggle__icon span:last-child { top: calc(100% - 2px); }
    .site-header[data-open] .menu-toggle__icon span:first-child { top: calc(50% - 1px); transform: rotate(45deg); }
    .site-header[data-open] .menu-toggle__icon span:last-child { top: calc(50% - 1px); transform: rotate(-45deg); }

    /* Sin JS el menú queda visible, en fila, bajo la marca; el header no se
       fija para no tapar media pantalla. */
    :where(:root:not(.js)) .site-header { position: relative; height: auto; }
    :where(:root:not(.js)) .site-header__bar { flex-wrap: wrap; row-gap: 0.25rem; padding-block: 0.75rem; }
    :root:not(.js) main { padding-top: 0; }

    /* Menú a pantalla completa (lo único centrado del sitio). */
    :where(.js) .site-header .site-nav {
      position: fixed;
      inset: 0;
      display: grid;
      place-items: center;
      padding: calc(var(--header-h) + 1rem) var(--gutter) 3rem;
      background: var(--petroleo-hondo);
      text-align: center;
      clip-path: inset(0 0 100% 0);
      visibility: hidden;
      transition: clip-path var(--t-base) var(--ease), visibility 0s linear var(--t-base);
    }
    .site-header[data-open] .site-nav {
      clip-path: inset(0);
      visibility: visible;
      transition-delay: 0s;
    }
    :where(.js) .site-header .site-nav__list {
      flex-direction: column;
      align-items: center;
      gap: 0.5rem;
    }
    :where(.js) .site-header .site-nav__link {
      font-size: clamp(1.75rem, 8vw, 2.5rem);
      font-weight: 650;
      font-stretch: 100%;
      letter-spacing: -0.02em;
    }
    .site-header[data-open] .site-nav__list li {
      animation: menu-in var(--t-base) var(--ease) backwards;
    }
    .site-header[data-open] .site-nav__list li:nth-child(2) { animation-delay: .06s; }
    .site-header[data-open] .site-nav__list li:nth-child(3) { animation-delay: .12s; }
    .site-header[data-open] .site-nav__list li:nth-child(4) { animation-delay: .18s; }
    .site-header[data-open] .site-nav__list li:nth-child(5) { animation-delay: .24s; }
  }

  @keyframes menu-in { from { opacity: 0; translate: 0 1.25rem; } }

  main { padding-top: 0; }
  body:not(:has(.hero)) main { padding-top: var(--header-h); }

  /* Barra de progreso de lectura (solo con scroll-driven animations). */
  .progress { display: none; }

  /* Footer */
  .site-footer {
    background: var(--petroleo-hondo);
    color: var(--blanco);
    padding-block: clamp(3rem, 6vw, 5rem) 2rem;
  }
  .site-footer__grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2.5rem var(--col-gap);
  }
  .site-footer__logo { height: 5rem; width: auto; margin-bottom: 1.5rem; }
  .site-footer__legal { color: var(--acero-claro); font-size: var(--fs-small); margin-bottom: 0.75rem; }
  .site-footer__mail { font-weight: 600; text-underline-offset: 0.25em; text-decoration-color: var(--senal); }
  .site-footer__nav ul { display: grid; gap: 0.5rem; list-style: none; padding: 0; }
  .site-footer__nav a { text-decoration: none; font-weight: 500; }
  .site-footer__nav a:hover { text-decoration: underline; text-decoration-color: var(--senal); text-underline-offset: 0.3em; }
  .site-footer__copy {
    grid-column: 1 / -1;
    padding-top: 1.5rem;
    border-top: 1px solid rgb(125 139 146 / .45);
    color: var(--acero-claro);
    font-size: var(--fs-small);
    max-width: none;
  }

  @media (min-width: 60rem) {
    .site-footer__grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
    .site-footer__brand { grid-column: 1 / span 6; }
    .site-footer__nav { grid-column: 9 / span 4; }
  }

  /* Cada imagen en un marco recortado, con paralaje y apertura al entrar. */
  .media {
    position: relative;
    overflow: hidden;
    margin: 0;
    background: var(--concreto);
  }
  .media img { width: 100%; height: 100%; object-fit: cover; }
}