/* =========================================================
   LAYOUT.CSS — Structural primitives (no color, no shadow)
========================================================= */

.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

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

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

.section--tight { padding-block: var(--space-16); }
.section--hero { padding-top: calc(var(--header-height) + var(--space-6)); padding-bottom: var(--space-12); }

.section-head {
  max-width: 720px;
  margin-bottom: var(--space-12);
}

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

/* ---------- FLEX / GRID UTILITIES ---------- */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

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

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

@media (max-width: 960px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .section { padding-block: var(--space-16); }
  .section--hero { padding-bottom: var(--space-2); padding-top: var(--space-6);}

}

/* ---------- SITE SHELL ---------- */
main { display: block; overflow-x: hidden; }

#site-header { position: sticky; top: 0; z-index: var(--z-header); }

/* ---------- RESPONSIVE VISIBILITY ---------- */
.hide-mobile { display: initial; }
.show-mobile { display: none; }

@media (max-width: 860px) {
  .hide-mobile { display: none !important; }
  .show-mobile { display: initial !important; }
}

/* ---------- TWO-COLUMN SPLIT (hero, feature rows) ---------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: var(--space-16);
}

.split--reverse { direction: rtl; }
.split--reverse > * { direction: ltr; }

@media (max-width: 900px) {
  .split, .split--reverse { grid-template-columns: 1fr; direction: ltr; }
}