app/src/styles/_layout.css

/* ============================================================================ */
/* Layout – 3-column grid (TOC / Article / Aside) */
/* ============================================================================ */
:root {
  --content-padding-x: 16px;
}

.content-grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--content-padding-x);
  margin-top: 40px;
  display: grid;
  grid-template-columns: 220px minmax(0, 680px) 260px;
  gap: 32px;
  align-items: start;
}

.content-grid > main { max-width: 100%;
  margin: 0;
  padding: 0;
}

@media (max-width: 1100px) {
  .content-grid { overflow: hidden; }
}

/* TOC (left column) */
.toc { position: sticky; top: 24px; }
.toc nav { border-left: 1px solid var(--border-color); padding-left: 16px; font-size: 13px; }
.toc .title { font-weight: 600; font-size: 14px; margin-bottom: 8px; }

/* Hide in-article TOC (duplicated by sticky aside) */
main > nav:first-of-type { display: none; }

/* TOC look & feel */
.toc nav ul { margin: 0 0 6px; padding-left: 1em; }
.toc nav li { list-style: none; margin: .25em 0; }
.toc nav a { color: var(--text-color); text-decoration: none; border-bottom: none; }
.toc nav > ul > li > a { font-weight: 700; }
.toc nav a:hover { text-decoration: underline solid var(--muted-color); }
.toc nav a.active { text-decoration: underline; }

/* Mobile TOC accordion */
.toc-mobile { display: none; margin: 8px 0 16px; }
.toc-mobile > summary { cursor: pointer; list-style: none; padding: 8px 12px; border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-color); font-weight: 600; }
.toc-mobile[open] > summary { border-bottom-left-radius: 0; border-bottom-right-radius: 0; }
.toc-mobile nav { border-left: none; padding: 10px 12px; font-size: 14px; border: 1px solid var(--border-color); border-top: none; border-bottom-left-radius: 8px; border-bottom-right-radius: 8px; }
.toc-mobile nav ul { margin: 0 0 6px; padding-left: 1em; }
.toc-mobile nav li { list-style: none; margin: .25em 0; }
.toc-mobile nav a { color: var(--text-color); text-decoration: none; border-bottom: none; }
.toc-mobile nav > ul > li > a { font-weight: 700; }
.toc-mobile nav a:hover { text-decoration: underline solid var(--muted-color); }
.toc-mobile nav a.active { text-decoration: underline; }

/* Right aside (notes) */
.right-aside { position: sticky; top: 24px; }
.right-aside .aside-card { background: var(--surface-bg); border: 1px solid var(--border-color); border-radius: 8px; padding: 10px; margin-bottom: 10px; font-size: 0.9rem; color: var(--text-color); }

/* Responsive – collapse to single column */
@media (max-width: 1100px) {
  .content-grid { grid-template-columns: 1fr; }
  .toc { position: static; display: none; }
  .toc-mobile { display: block; }
  .right-aside { display: none; }
  main > nav:first-of-type { display: block; }
}



.margin-aside { position: relative; margin: 12px 0; }

.margin-aside__aside {
  position: absolute;
  top: 0;
  right: -260px; /* push into the right grid column (width 260 + gap 32) */
  width: 260px;
  border-radius: 8px;
  padding: 0 30px;
  font-size: 0.9rem;
  color: var(--muted-color);
}
@media (max-width: 1100px) {
  .margin-aside__aside {
    position: static;
    width: auto;
    margin-top: 8px;
  }
}


/* ============================================================================ */
/* Width helpers – slightly wider than main column, and full-width to viewport */
/* ---------------------------------------------------------------------------- */
/* Usage in MDX: */
/* <div className="wide"> ... </div> */
/* <div className="full-width"> ... </div> */
/* These center the content relative to the viewport while keeping it responsive. */
/* */
/* Notes: */
/* - These helpers work inside the main article column; they break out visually */
/*   to be wider or fully span the viewport. On small screens, they fall back to 100%. */
/* - Adjust the target width in .wide if desired. */
.wide,
.full-width { box-sizing: border-box; position: relative; z-index: var(--z-elevated); }

.wide {
  /* Target up to ~1100px while staying within viewport minus page gutters */
  width: min(1100px, 100vw - 32px);
  margin-left: 50%;
  transform: translateX(-50%);
}

.full-width {
  /* Span the full viewport width and center relative to viewport */
  width: 100vw;
  margin-left: calc(50% - 50vw + var(--content-padding-x) * 2);
  margin-right: calc(50% - 50vw);
}

@media (max-width: 1100px) {
  .wide,
  .full-width {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
    transform: none;
  }
}