/* ============================================================
   LAYOUT — container, sections, grid
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--section-y); }
.section--tight { padding-block: clamp(2.5rem, 6vw, 4rem); }
.section--light { background: var(--color-surface-light); }
.section--dark  { background: var(--color-surface-dark); color: #fff; }
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }
.section--dark p { color: var(--color-text-on-dark); }
.section--dark .eyebrow { color: var(--color-brand); }

/* Section header block */
.section-header { max-width: 640px; margin-bottom: var(--space-12); }
.section-header--center { margin-inline: auto; text-align: center; }
.section-header__title { margin-top: var(--space-3); }
.section-header__intro { margin-top: var(--space-4); }
.section-header--center .eyebrow { justify-content: center; }

/* Grids */
.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)); }

/* Split (text + media) */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }

@media (max-width: 900px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}