/* ==========================================================================
   Layout — Containers, section spacing, grid primitives
   Depends on: tokens.css

   Load order: 3 of 5 (tokens → base → layout → components → utilities)
   ========================================================================== */

/* -----------------------------------------------------------------------
   Container
   ----------------------------------------------------------------------- */

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

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

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

/* -----------------------------------------------------------------------
   Section spacing
   ----------------------------------------------------------------------- */

.section {
  padding-block: var(--space-16);
}

.section--sm {
  padding-block: var(--space-8);
}

.section--lg {
  padding-block: var(--space-24);
}

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

.section--dark {
  background-color: var(--section-bg-dark);
  color: var(--text-on-dark);
}

/* -----------------------------------------------------------------------
   Grid primitives (mobile-first)
   ----------------------------------------------------------------------- */

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 {
  grid-template-columns: 1fr;
}

.grid--3 {
  grid-template-columns: 1fr;
}

.grid--4 {
  grid-template-columns: 1fr;
}

/* Tablet: 768px */
@media (min-width: 48rem) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop: 1024px */
@media (min-width: 64rem) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* -----------------------------------------------------------------------
   Flex helpers
   ----------------------------------------------------------------------- */

.flex {
  display: flex;
}

.flex--center {
  align-items: center;
  justify-content: center;
}

.flex--between {
  align-items: center;
  justify-content: space-between;
}

.flex--col {
  flex-direction: column;
}

.flex--wrap {
  flex-wrap: wrap;
}

.flex--gap-2 {
  gap: var(--space-2);
}

.flex--gap-4 {
  gap: var(--space-4);
}

.flex--gap-6 {
  gap: var(--space-6);
}

/* -----------------------------------------------------------------------
   Stack (vertical rhythm helper)
   ----------------------------------------------------------------------- */

.stack > * + * {
  margin-top: var(--space-6);
}

.stack--sm > * + * {
  margin-top: var(--space-3);
}

.stack--lg > * + * {
  margin-top: var(--space-12);
}

/* -----------------------------------------------------------------------
   Two-column content layout (hero, feature sections)
   ----------------------------------------------------------------------- */

.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 64rem) {
  .split {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }
}