/* ==========================================================================
   Layout primitives — container, section, grid helpers
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-width-container);
  margin-inline: auto;
  padding-inline: var(--spacing-24);
}

@media (min-width: 768px) {
  .container { padding-inline: var(--spacing-32); }
}

.container--narrow {
  max-width: calc(var(--max-width-text) + var(--spacing-64));
}

/* Section — enforces brand-compliant vertical rhythm */
.section {
  padding-block: var(--section-py);
}

.section--lg { padding-block: var(--section-py-lg); }
.section--sm { padding-block: var(--section-py-sm); }

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

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

.section--light-grey {
  background: var(--color-light-grey);
}

/* Section header — the top block of a section (eyebrow + heading + intro) */
.section-header {
  max-width: var(--max-width-text);
  margin-bottom: var(--spacing-48);
}

/* Tighter heading-to-body gap on mobile, matching the compacted section padding */
@media (max-width: 720px) {
  .section-header { margin-bottom: var(--spacing-24); }
}

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

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: var(--label-weight);
  letter-spacing: var(--label-tracking);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--spacing-16);
}

.section--inverse .eyebrow { color: var(--color-mid-grey); }

.lead {
  font-size: 1.125rem;
  max-width: var(--max-width-text);
  margin-top: var(--spacing-24);
  color: var(--text-muted);
}

.section--inverse .lead { color: var(--color-light-grey); }

/* Grid helpers */
.grid {
  display: grid;
  gap: var(--spacing-24);
}

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 900px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

.grid--gap-lg { gap: var(--spacing-32); }
.grid--gap-sm { gap: var(--spacing-16); }

/* Flex utilities */
.stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-24);
}

.stack--sm { gap: var(--spacing-16); }
.stack--lg { gap: var(--spacing-32); }

.row {
  display: flex;
  gap: var(--spacing-16);
  align-items: center;
  flex-wrap: wrap;
}

/* Alternating two-column row (feature blocks) */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-48);
  align-items: center;
}

.split > * { min-width: 0; }

.split--reverse > :first-child { order: 2; }

@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; gap: var(--spacing-32); }
  .split--reverse > :first-child { order: 0; }
}

/* Visibility helpers */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.hide-mobile { display: initial; }
.show-mobile { display: none; }

@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
  .show-mobile { display: initial !important; }
}

/* Text helpers */
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }
.text-max    { max-width: var(--max-width-text); }

/* Spacers */
.mt-2 { margin-top: var(--spacing-16); }
.mt-3 { margin-top: var(--spacing-24); }
.mt-4 { margin-top: var(--spacing-32); }
.mt-5 { margin-top: var(--spacing-48); }
.mt-6 { margin-top: var(--spacing-64); }