/* ============================================================
   LAYOUT — Container, Grid, Flex Helpers
   ============================================================ */

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-sm { max-width: 800px; }
.container-lg { max-width: 1440px; }

/* ---- Grid Utilities ---- */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* ---- Flex Utilities ---- */
.flex      { display: flex; }
.flex-col  { flex-direction: column; }
.items-center  { align-items: center; }
.items-start   { align-items: flex-start; }
.justify-center  { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end     { justify-content: flex-end; }
.flex-wrap { flex-wrap: wrap; }
.flex-1    { flex: 1; }

/* ---- Gap ---- */
.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); }
.gap-12 { gap: var(--space-12); }

/* ---- Sections ---- */
.section {
  padding: var(--space-24) 0;
}

.section-sm {
  padding: var(--space-16) 0;
}

.section-lg {
  padding: var(--space-32) 0;
}

/* ---- Utilities ---- */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-primary { color: var(--color-primary); }
.text-muted   { color: var(--color-text-muted); }
.text-white   { color: #fff; }
.text-sm      { font-size: var(--text-sm); }
.text-lg      { font-size: var(--text-lg); }
.text-xl      { font-size: var(--text-xl); }
.font-bold    { font-weight: 700; }
.font-semibold { font-weight: 600; }

.w-full   { width: 100%; }
.h-full   { height: 100%; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }

.mt-4  { margin-top: var(--space-4); }
.mb-4  { margin-bottom: var(--space-4); }
.mt-8  { margin-top: var(--space-8); }
.mb-8  { margin-bottom: var(--space-8); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ---- Aspect Ratios ---- */
.aspect-square { aspect-ratio: 1; }
.aspect-video  { aspect-ratio: 16/9; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .hide-tablet { display: none; }
}

@media (max-width: 640px) {
  .container { padding: 0 var(--space-4); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: var(--space-16) 0; }
  .section-lg { padding: var(--space-24) 0; }
  .hide-mobile { display: none; }
}