/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--wide {
  max-width: var(--container-wide);
}

/* ── Section wrappers ── */
.section {
  padding-block: var(--section-pad);
}
.section--dark {
  background: var(--bg-industry-card);
  color: var(--c-white);
}
.section--alt {
  background: var(--c-section-alt);
}
.section--olive {
  background: var(--c-olive);
  color: var(--c-white);
}
.section--royal {
  background: var(--c-royal);
  color: var(--c-white);
}
/* Closes the gap above a section without touching the rhythm below it. */
.section--tight-top {
  padding-top: calc(var(--section-pad) * 0.5);
}
/* Hairline between two sections that share a background and would otherwise
   read as one block. */
.section--divider-top {
  border-top: 1px solid var(--c-outline-variant);
}

/* ── Grid ── */
.grid {
  display: grid;
  gap: var(--sp-8);
}
.grid > * { min-width: 0; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid--4,
  .grid--3,
  .grid--2 { grid-template-columns: 1fr; }
}

/* ── Flex utilities ── */
.flex       { display: flex; }
.flex-wrap  { flex-wrap: wrap; }
.flex-col   { flex-direction: column; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-4  { gap: var(--sp-4); }
.gap-6  { gap: var(--sp-6); }
.gap-8  { gap: var(--sp-8); }

/* ── Stack (vertical spacing) ── */
.stack > * + * { margin-top: var(--sp-6); }
.stack--sm > * + * { margin-top: var(--sp-3); }
.stack--lg > * + * { margin-top: var(--sp-10); }

/* ── Two-column sidebar layout ── */
.layout-sidebar {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--sp-12);
  align-items: start;
}
@media (max-width: 900px) {
  .layout-sidebar { grid-template-columns: 1fr; }
}

/* ── Text alignment ── */
.text-center { text-align: center; }
.text-left   { text-align: left; }
/* `p` carries a 68ch measure, so a centred paragraph needs auto side margins —
   without them the text is centred inside a box that still sits flush left. */
.text-center p { margin-inline: auto; }

/* ── Spacing helpers ── */
.mt-4  { margin-top: var(--sp-4); }
.mt-8  { margin-top: var(--sp-8); }
.mt-12 { margin-top: var(--sp-12); }
.mb-4  { margin-bottom: var(--sp-4); }
.mb-8  { margin-bottom: var(--sp-8); }