/* ============================================================
   CiCC Theme 4.0 — Layout: Container, Grid, Section
   Layer: base/layout
   ============================================================ */

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

  .container--narrow {
    max-width: 800px;
  }

  /* ── Full-width override (remove all inline max-width:800px) ── */
  .container,
  .entry-content,
  .course-tab-content,
  [style*="max-width:800"] {
    max-width: none !important;
  }

  .site-main {
    max-width: var(--container-max, 1320px) !important;
  }

  .container--wide {
    max-width: 1400px;
  }

  @media (max-width: 768px) {
    :root { --container-padding: 16px; }
  }

  /* ── Section ── */
  .section {
    padding: var(--space-20) 0;
  }

  .section--sm  { padding: var(--space-12) 0; }
  .section--lg  { padding: var(--space-28) 0; }
  .section--xl  { padding: var(--space-32) 0; }

  .section--alt {
    background: var(--gray-50);
  }

  .section--dark {
    background: var(--gray-900);
    color: var(--cicc-white);
  }

  .section--dark .section-title { color: var(--cicc-white); }

  @media (max-width: 768px) {
    .section { padding: var(--space-14) 0; }
    .section--lg { padding: var(--space-20) 0; }
  }

  /* ── Section Header ── */
  .section-header {
    text-align: center;
    margin-bottom: var(--space-14);
  }

  .section-header--left {
    text-align: left;
  }

  @media (max-width: 768px) {
    .section-header { margin-bottom: var(--space-10); }
  }

  /* ── Grid ── */
  .grid {
    display: grid;
    gap: var(--space-6);
  }

  .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--5 { grid-template-columns: repeat(5, 1fr); }

  @media (max-width: 1024px) {
    .grid--5 { grid-template-columns: repeat(3, 1fr); }
    .grid--4 { grid-template-columns: repeat(2, 1fr); }
    .grid--3 { grid-template-columns: repeat(2, 1fr); }
  }

  @media (max-width: 768px) {
    .grid--2,
    .grid--3,
    .grid--4,
    .grid--5 { grid-template-columns: 1fr; }
  }

  /* ── Two-column ── */
  .two-col {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-10);
    align-items: start;
  }

  @media (max-width: 1024px) {
    .two-col { grid-template-columns: 1fr; }
  }
}