/* =====================================================
   Digital AI — Grid System
   4/8/12 column grid with fluid containers
   ===================================================== */

/* ── Container ── */
.container {
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--spacing-4x);
}

@media (min-width: 640px) {
  .container { max-width: 640px; padding-inline: var(--spacing-6x); }
}
@media (min-width: 768px) {
  .container { max-width: 768px; }
}
@media (min-width: 1024px) {
  .container { max-width: 1024px; padding-inline: var(--spacing-8x); }
}
@media (min-width: 1280px) {
  .container { max-width: 1280px; }
}
@media (min-width: 1536px) {
  .container { max-width: 1536px; }
}

.container-sm { max-width: 640px; margin-inline: auto; padding-inline: var(--spacing-4x); }
.container-md { max-width: 768px; margin-inline: auto; padding-inline: var(--spacing-4x); }
.container-lg { max-width: 1024px; margin-inline: auto; padding-inline: var(--spacing-4x); }
.container-xl { max-width: 1280px; margin-inline: auto; padding-inline: var(--spacing-4x); }
.container-full { width: 100%; padding-inline: var(--spacing-4x); }

/* ── Grid ── */
.grid { display: grid; gap: var(--spacing-4x); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-8 { grid-template-columns: repeat(8, 1fr); }
.grid-12 { grid-template-columns: repeat(12, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-auto-sm { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-auto-lg { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

/* Gap variants */
.gap-1 { gap: var(--spacing-1x); }
.gap-2 { gap: var(--spacing-2x); }
.gap-3 { gap: var(--spacing-3x); }
.gap-4 { gap: var(--spacing-4x); }
.gap-6 { gap: var(--spacing-6x); }
.gap-8 { gap: var(--spacing-8x); }
.gap-10 { gap: var(--spacing-10x); }
.gap-12 { gap: var(--spacing-12x); }

/* Span helpers */
.col-span-1 { grid-column: span 1; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-full { grid-column: 1 / -1; }

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

/* ── Responsive Breakpoints ── */
@media (max-width: 639px) {
  .grid-4, .grid-8, .grid-12 { grid-template-columns: 1fr; }
  .col-span-2, .col-span-3, .col-span-4, .col-span-5, .col-span-6 { grid-column: span 1; }
  .hide-mobile { display: none !important; }
}
@media (min-width: 640px) and (max-width: 767px) {
  .grid-8, .grid-12 { grid-template-columns: repeat(4, 1fr); }
  .hide-sm { display: none !important; }
}
@media (min-width: 768px) and (max-width: 1023px) {
  .grid-12 { grid-template-columns: repeat(8, 1fr); }
  .hide-md { display: none !important; }
}
@media (min-width: 1024px) {
  .hide-desktop { display: none !important; }
}