/* ============================================================
   CourserTech — Layout Utilities
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}

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

.section { padding-block: var(--section-pad); }
.section-tight { padding-block: calc(var(--section-pad) * 0.7); }
.section-soft { background: var(--c-bg-soft); }
.section-dark { background: var(--c-primary-deep); }

.grid { display: grid; gap: 24px; }
.grid-1 { grid-template-columns: 1fr; }
.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-6 { grid-template-columns: repeat(6, 1fr); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.flex-gap-sm { gap: 12px; }
.flex-gap { gap: 20px; }

.text-center { text-align: center; }
.text-muted { color: var(--c-muted); }
.text-sm { font-size: var(--fs-sm); }
.text-xs { font-size: var(--fs-xs); }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: 8px; }
.mb-1 { margin-bottom: 8px; }
.mt-2 { margin-top: 16px; }
.mb-2 { margin-bottom: 16px; }
.mt-3 { margin-top: 24px; }
.mb-3 { margin-bottom: 24px; }
.mt-4 { margin-top: 40px; }
.mb-4 { margin-bottom: 40px; }

.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;
}

[hidden] { display: none !important; }