/* =========================================================================
   layout.css — containers, sections, grids
   Depends on: tokens.css
   ========================================================================= */

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

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

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

/* -------------------------------- Sections ------------------------------ */

.section {
  padding-block: var(--section-py);
  position: relative;
}

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

.section-alt {
  background: linear-gradient(180deg, transparent 0%, var(--primary-bg) 50%, transparent 100%);
}

.section-dark {
  background: var(--surface-dark);
  color: var(--text-invert);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--text-invert);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto clamp(40px, 6vw, 72px);
}

.section-header .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  margin-bottom: 16px;
  background: rgba(30, 143, 232, 0.08);
  border: 1px solid rgba(30, 143, 232, 0.18);
  border-radius: var(--r-pill);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--primary-deep);
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  font-size: var(--text-md);
  color: var(--text-body);
  margin-inline: auto;
  max-width: 620px;
}

/* -------------------------------- Grids --------------------------------- */

.grid {
  display: grid;
  gap: clamp(16px, 2.5vw, 28px);
}

.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

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

.grid-split {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
  grid-template-columns: 1fr;
  align-items: center;
}

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

@media (min-width: 900px) {
  .grid-split {
    grid-template-columns: 1fr 1fr;
  }
  .grid-split-60-40 { grid-template-columns: 1.2fr 1fr; }
  .grid-split-40-60 { grid-template-columns: 1fr 1.2fr; }
}

/* -------------------------------- Stacks -------------------------------- */

.stack { display: flex; flex-direction: column; gap: 16px; }
.stack-sm { gap: 8px; }
.stack-lg { gap: 24px; }
.stack-xl { gap: 40px; }

.row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.row-center {
  justify-content: center;
}

.row-between {
  justify-content: space-between;
}