/* ===========================================================
   layout.css — Container, secciones, grids
   =========================================================== */

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

.container--narrow {
  max-width: var(--container-narrow);
}

.container--wide {
  max-width: var(--container-wide);
}

/* Secciones con espaciado consistente */
.section {
  padding-block: var(--space-8);
  position: relative;
}

.section--tight {
  padding-block: var(--space-7);
}

.section--loose {
  padding-block: var(--space-9);
}

.section--alt {
  background-color: var(--bg-alt);
}

/* Header de sección */
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-7);
  max-width: 720px;
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
  align-items: center;
}

.section-head--row {
  flex-direction: row;
  align-items: flex-end;
  justify-content: space-between;
  max-width: none;
  gap: var(--space-5);
  flex-wrap: wrap;
}

.section-head__title {
  margin-top: var(--space-1);
}

/* Grids genéricos */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

@media (min-width: 720px) {
  .grid-3-fixed {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3-fixed {
    grid-template-columns: repeat(3, 1fr);
  }
}

.stack {
  display: flex;
  flex-direction: column;
}

.stack > * + * {
  margin-top: var(--space-4);
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: var(--z-nav);
  padding: 0.65rem 1rem;
  background: var(--ink);
  color: var(--bg);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
}

.skip-link:focus {
  top: 1rem;
}