/* ============================================================
   Moléculas — docs/02-inventario-componentes.md §2
   ============================================================ */

@layer molecules {
  /* --- Encabezado de sección: eyebrow + título + intro ----------- */
  .section-head {
    display: grid;
    gap: var(--s-md);
    max-width: 52rem;
    margin-bottom: var(--s-xl);
  }
  .section-head h2 {
    font-size: var(--fs-h2);
  }
  .section-head p {
    color: var(--c-ink-2);
    font-size: var(--fs-body-lg);
    max-width: var(--measure);
  }
  .section-head--center {
    margin-inline: auto;
    text-align: center;
    justify-items: center;
  }

  /* --- Ítem de navegación --------------------------------------- */
  .nav-item {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0;
    color: var(--c-ink-2);
    font-family: var(--f-sans);
    font-size: var(--fs-meta);
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-decoration: none;
    transition: color var(--dur-fast) var(--ease-out);
  }
  .nav-item::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 1px;
    background: var(--c-red-line);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--dur-fast) var(--ease-out);
  }
  .nav-item:hover,
  .nav-item[aria-current="page"] {
    color: var(--c-ink);
  }
  .nav-item:hover::after,
  .nav-item[aria-current="page"]::after {
    transform: scaleX(1);
  }

  /* --- Stat ------------------------------------------------------ */
  .stat {
    display: grid;
    gap: 0.25rem;
  }
  .stat__value {
    font-family: var(--f-display);
    font-stretch: var(--display-stretch);
    font-weight: 900;
    font-size: clamp(2rem, 1.6rem + 1.6vw, 3rem);
    line-height: 1;
    letter-spacing: var(--tracking-tight);
  }
  .stat__value em {
    font-style: normal;
    color: var(--c-red-line);
  }
  .stat__label {
    color: var(--c-ink-2);
    font-family: var(--f-mono);
    font-size: var(--fs-meta);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  /* --- Cita editorial (serif itálica: solo para citas) ----------- */
  .quote {
    margin: 0;
    display: grid;
    gap: var(--s-md);
  }
  .quote blockquote {
    margin: 0;
    font-family: var(--f-serif);
    font-style: italic;
    font-weight: 400;
    font-size: var(--fs-quote);
    line-height: 1.5;
    color: var(--c-ink);
  }
  .quote figcaption {
    color: var(--c-ink-2);
    font-family: var(--f-mono);
    font-size: var(--fs-meta);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .quote--rule {
    padding-left: var(--s-lg);
    border-left: 2px solid var(--c-red-line);
  }

  /* --- Campo de formulario completo ------------------------------ */
  .field {
    display: grid;
    gap: 0.45rem;
  }
  .field__label {
    font-size: var(--fs-small);
    font-weight: 600;
    color: var(--c-ink);
  }
  .field__label small {
    color: var(--c-gray);
    font-weight: 400;
  }
  .field__help {
    color: var(--c-gray);
    font-size: var(--fs-meta);
  }
  .field__error {
    color: var(--c-ink);
    font-size: var(--fs-small);
    display: flex;
    gap: 0.4rem;
    align-items: baseline;
  }
  .field__error::before {
    content: "";
    flex: none;
    width: 6px;
    height: 6px;
    background: var(--c-red);
    transform: translateY(-1px);
  }

  /* --- Acordeón (<details> nativo) ------------------------------- */
  .accordion-item {
    border-bottom: 1px solid var(--c-line);
  }
  .accordion-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--s-md);
    padding: var(--s-lg) 0;
    cursor: pointer;
    list-style: none;
    font-family: var(--f-display);
    font-stretch: var(--display-stretch);
    font-weight: 700;
    font-size: var(--fs-h4);
    letter-spacing: -0.01em;
  }
  .accordion-item summary::-webkit-details-marker {
    display: none;
  }
  .accordion-item summary::after {
    content: "+";
    flex: none;
    font-family: var(--f-mono);
    font-weight: 400;
    font-size: 1.5rem;
    color: var(--c-red-line);
    transition: transform var(--dur-fast) var(--ease-out);
  }
  .accordion-item[open] summary::after {
    transform: rotate(45deg);
  }
  .accordion-item__body {
    padding-bottom: var(--s-lg);
    color: var(--c-ink-2);
    max-width: var(--measure);
  }

  /* --- Canal de contacto ----------------------------------------- */
  .channel {
    display: grid;
    gap: 0.2rem;
    padding: var(--s-lg);
    border: 1px solid var(--c-line);
    background: var(--c-surface-1);
    text-decoration: none;
    transition: border-color var(--dur-fast) var(--ease-out);
  }
  a.channel:hover {
    border-color: var(--c-red-line);
  }
  .channel__label {
    color: var(--c-gray);
    font-family: var(--f-mono);
    font-size: var(--fs-meta);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .channel__value {
    font-weight: 600;
    font-size: var(--fs-body-lg);
    word-break: break-word;
  }

  /* --- Nodo de línea de tiempo ----------------------------------- */
  .timeline-node {
    position: relative;
    display: grid;
    gap: var(--s-sm);
    padding-left: var(--s-xl);
  }
  .timeline-node::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.45rem;
    width: 11px;
    height: 11px;
    background: var(--c-red);
  }

  /* --- Lista con marcador cuadrado (en lugar del ✓ de Stitch) ---- */
  .list-square {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.6rem;
  }
  .list-square li {
    position: relative;
    padding-left: 1.3rem;
    color: var(--c-ink-2);
  }
  .list-square li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.62em;
    width: 6px;
    height: 6px;
    background: var(--c-red);
  }
  .list-square--muted li::before {
    background: transparent;
    border: 1px solid var(--c-gray);
  }

  /* --- Migas ----------------------------------------------------- */
  .breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0;
    padding: 0;
    list-style: none;
    font-family: var(--f-mono);
    font-size: var(--fs-meta);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--c-gray);
  }
  .breadcrumb li + li::before {
    content: "/";
    margin-right: 0.4rem;
    color: var(--c-line-strong);
  }
  .breadcrumb a {
    text-decoration: none;
    color: var(--c-ink-2);
  }
  .breadcrumb a:hover {
    color: var(--c-ink);
  }
}