/* site/articles/articles.css: the articles section (/articles/ and each
   article under it).

   Loaded after /assets/craton-ui.css and built only from its --ui-* tokens,
   so light and dark come for free. Nothing here fetches anything. Parts
   marked PROMOTE are general enough to move into craton-ui.css. */

.ar main { display: block; }

/* ======================================================================
   The index: one lead story, then a quiet list.
   ====================================================================== */

.ar-head { padding: var(--ui-space-11) 0 var(--ui-space-8); }
.ar-head .ui-lede { max-width: 52ch; }

.ar-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--ui-space-5); }
.ar-card {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 15rem); gap: var(--ui-space-6);
  align-items: center; padding: var(--ui-space-7); border-radius: var(--ui-radius-lg);
  background: var(--ui-surface); border: 1px solid var(--ui-line); color: inherit; text-decoration: none;
  transition: border-color var(--ui-dur) var(--ui-ease), transform var(--ui-dur) var(--ui-ease);
}
.ar-card:hover { border-color: var(--ui-line-strong); transform: translateY(-1px); }
.ar-card:focus-visible { outline: 2px solid var(--ui-accent); outline-offset: 3px; }
.ar-card .ui-kicker { margin-bottom: var(--ui-space-2); }
.ar-card-title {
  margin: 0; font: var(--ui-weight-bold) var(--ui-type-h3) / var(--ui-leading-snug) var(--ui-font-display);
  letter-spacing: -0.02em; color: var(--ui-ink); text-wrap: balance;
}
.ar-card-text { margin: var(--ui-space-2) 0 0; max-width: 56ch; color: var(--ui-ink-2); }
.ar-card-figure { margin: 0; text-align: right; }
.ar-card-num {
  display: block; font: var(--ui-weight-bold) var(--ui-type-stat-sm) / 1 var(--ui-font-display);
  letter-spacing: -0.03em; color: var(--ui-ink);
}
.ar-card-cap { display: block; margin-top: 6px; font-size: 14px; color: var(--ui-muted); }
@media (max-width: 720px) {
  .ar-card { grid-template-columns: minmax(0, 1fr); padding: var(--ui-space-6); }
  .ar-card-figure { text-align: left; }
}
@media (prefers-reduced-motion: reduce) {
  .ar-card, .ar-card:hover { transition: none; transform: none; }
}

/* ======================================================================
   An article: a reading column, one big number up top, figures inline.
   ====================================================================== */

.ar-article { padding: var(--ui-space-10) 0 var(--ui-space-11); }
.ar-meta { margin: var(--ui-space-4) 0 0; font-size: 14.5px; color: var(--ui-muted); }
.ar-meta a { color: inherit; }

/* PROMOTE: long-form prose at reading measure. */
.ar-prose { max-width: var(--ui-measure); font-size: 18px; line-height: 1.62; color: var(--ui-ink-2); }
.ar-prose > * + * { margin-top: 1.05em; }
.ar-prose p, .ar-prose ul, .ar-prose ol { margin-bottom: 0; }
.ar-prose h2 {
  margin: var(--ui-space-9) 0 0; font: var(--ui-weight-bold) 28px / 1.2 var(--ui-font-display);
  letter-spacing: -0.025em; color: var(--ui-ink); text-wrap: balance;
}
.ar-prose h3 { margin: var(--ui-space-7) 0 0; font: 650 20px/1.3 var(--ui-font-display); color: var(--ui-ink); }
.ar-prose strong { color: var(--ui-ink); font-weight: var(--ui-weight-semibold); }
.ar-prose a { color: var(--ui-accent); text-underline-offset: 3px; }
.ar-prose ul, .ar-prose ol { padding-left: 1.2em; }
.ar-prose li + li { margin-top: 0.45em; }
.ar-prose code {
  font: 0.86em var(--ui-font-mono); padding: 1px 5px; border-radius: 5px;
  background: var(--ui-surface-2); color: var(--ui-ink); overflow-wrap: anywhere;
}
.ar-prose blockquote {
  margin-left: 0; padding: 2px 0 2px var(--ui-space-5); border-left: 3px solid var(--ui-line-strong);
  color: var(--ui-ink-2);
}
.ar-prose .ui-code, .ar-prose .ui-table-wrap, .ar-prose .ar-figure, .ar-prose .ui-stats, .ar-prose .ui-callout { margin-top: var(--ui-space-7); }
.ar-prose .ui-code pre { font-size: 13.5px; line-height: 1.55; }
.ar-prose pre code { padding: 0; border-radius: 0; background: none; font-size: inherit; overflow-wrap: normal; }
.ar-prose .ui-callout p { margin: 0; font-size: 16px; }

/* The number the article leads with. */
.ar-lead { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 12rem), 1fr)); gap: var(--ui-space-6); margin: var(--ui-space-8) 0 var(--ui-space-8); max-width: 820px; }
.ar-lead .ui-stat-num { font-size: var(--ui-type-stat-md); }

/* A figure: a small chart card with a caption that names its source. */
.ar-figure { margin: 0; max-width: 820px; }
.ar-figure .ui-chart-card { padding: 20px 20px 14px; }
.ar-figure figcaption { margin: 10px 2px 0; font-size: 14px; line-height: 1.5; color: var(--ui-muted); }
.ar-figure figcaption a { color: inherit; }

/* Horizontal bars as HTML, not SVG, so labels wrap on phones. PROMOTE. */
.ar-bars { list-style: none; margin: 8px 0 4px; padding: 0; display: grid; gap: 14px; }
.ar-bar { display: grid; grid-template-columns: minmax(0, 12rem) minmax(0, 1fr) 4.2rem; gap: 12px; align-items: center; }
.ar-bar-name { font-size: 15px; color: var(--ui-ink); }
.ar-bar-name small { display: block; font-size: 13px; color: var(--ui-muted); }
.ar-bar-track { position: relative; height: 12px; border-radius: 0 4px 4px 0; background: var(--ui-surface-2); }
.ar-bar-fill {
  position: absolute; inset: 0 auto 0 0; width: var(--ar-value, 0%); border-radius: 0 4px 4px 0;
  background: var(--ar-tint, var(--ui-accent));
}
.ar-bar-value { text-align: right; font: 650 15px var(--ui-font-text); font-variant-numeric: tabular-nums; color: var(--ui-ink); }
.ar-bar[data-kind="baseline"] { --ar-tint: var(--ui-muted); }
.ar-bar[data-kind="good"] { --ar-tint: var(--ui-good); }
.ar-bar[data-kind="warn"] { --ar-tint: var(--ui-bad); }
.ar-group + .ar-group { margin-top: var(--ui-space-6); }
.ar-group-title { margin: 0 0 4px; font-size: 14px; font-weight: var(--ui-weight-semibold); color: var(--ui-ink); }
.ar-key { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 12px 0 0; padding: 0; list-style: none; font-size: 13.5px; color: var(--ui-muted); }
.ar-key li { display: inline-flex; align-items: center; gap: 6px; }
.ar-key i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; background: var(--ar-tint, var(--ui-accent)); }
.ar-key [data-kind="baseline"] i { --ar-tint: var(--ui-muted); }
@media (max-width: 560px) {
  .ar-bar { grid-template-columns: minmax(0, 1fr) 3.8rem; }
  .ar-bar-name { grid-column: 1 / -1; }
}

/* A small SVG line chart sits in .ui-chart; its axes use the system classes. */
.ar-chart svg { max-height: 300px; }

/* The next reads at the foot of an article. */
.ar-next { margin-top: var(--ui-space-10); padding-top: var(--ui-space-7); border-top: 1px solid var(--ui-line); max-width: var(--ui-measure); }
.ar-next .ui-label { margin-bottom: var(--ui-space-3); }
.ar-next ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ar-next a { font-weight: var(--ui-weight-semibold); color: var(--ui-ink); text-underline-offset: 3px; }
.ar-next small { display: block; color: var(--ui-muted); font-size: 14px; }

/* The trade-off tables, one per field, side by side where they fit. */
.ar-prose .ar-tables { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); gap: var(--ui-space-5); margin-top: var(--ui-space-7); }
.ar-prose .ar-tables .ui-table-wrap { margin-top: 0; }
.ar-table-note { font-size: 14px; line-height: 1.5; color: var(--ui-muted); }
.ar-table-note a { color: inherit; }
.ui-table tr.ar-chosen td { background: var(--ui-accent-soft); font-weight: var(--ui-weight-semibold); }

/* A chart title and the first group under it. */
.ui-chart-title + .ar-group { margin-top: var(--ui-space-4); }