/* ==========================================================================
   Layout — State3 Depend
   ========================================================================== */

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

/* ---- Sections ---- */
.section {
  padding-block: var(--section-py);
}

.section--dark,
.section--dark-alt {
  background-color: var(--section-bg);
  color: var(--section-text);
}

.section--light,
.section--light-alt {
  background-color: var(--section-bg);
  color: var(--section-text);
}

/* ---- Grid systems ---- */
.grid-2col,
.grid-3col,
.grid-4col {
  display: grid;
  gap: var(--space-8);
}

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

/* ---- Flex utilities ---- */
.flex        { display: flex; }
.flex-col    { flex-direction: column; }
.flex-wrap   { flex-wrap: wrap; }
.items-center{ align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center  { justify-content: center; }
.gap-4       { gap: var(--space-4); }
.gap-6       { gap: var(--space-6); }
.gap-8       { gap: var(--space-8); }

/* ---- Text alignment ---- */
.text-center { text-align: center; }
.text-left   { text-align: left; }

/* ---- Max-width for readable text ---- */
.max-w-prose {
  max-width: 65ch;
}

.max-w-narrow {
  max-width: 540px;
}

.mx-auto {
  margin-inline: auto;
}

/* ==========================================================================
   Responsive breakpoints — mobile-first
   ========================================================================== */

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

/* md: 768px */
@media (min-width: 768px) {
  .section {
    padding-block: var(--section-py-lg);
  }

  .grid-3col { grid-template-columns: repeat(2, 1fr); }
  .grid-4col { grid-template-columns: repeat(2, 1fr); }
}

/* lg: 1024px */
@media (min-width: 1024px) {
  :root {
    --container-padding: var(--space-8);
  }

  .grid-3col { grid-template-columns: repeat(3, 1fr); }
  .grid-4col { grid-template-columns: repeat(3, 1fr); }
}

/* xl: 1280px */
@media (min-width: 1280px) {
  .grid-4col { grid-template-columns: repeat(4, 1fr); }
}