/* "How this number is made" card (T-017). Popover on desktop, bottom sheet on phones. Settle in, no bounce (MOTION.md). */
.metric-card {
  position: fixed; left: 0; top: 0; z-index: 95;
  width: min(360px, calc(100vw - 24px)); max-height: min(560px, calc(100vh - 24px)); overflow: auto;
  padding: 14px 16px 14px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-2);
  color: var(--ink-2); font-size: var(--t-sm); line-height: 1.5;
  opacity: 0; transform: translate3d(0, 4px, 0) scale(0.98);
  transition: opacity var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
  overscroll-behavior: contain;
}
.metric-card.show { opacity: 1; transform: none; }
.metric-card:focus { outline: none; }
.metric-card:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.metric-card .mc-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 2px; }
.metric-card .mc-head .micro { color: var(--ink-3); }
.metric-card .mc-x { display: inline-grid; place-items: center; width: 28px; height: 28px; margin: -6px -8px -6px 0; border-radius: 50%; color: var(--ink-3); }
.metric-card .mc-x:focus-visible, .metric-card .mc-x:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 6%, transparent); }
.metric-card h3 { margin: 0 0 4px; font-size: var(--t-md); font-weight: 600; color: var(--ink); }
.metric-card .mc-what { margin: 0 0 10px; color: var(--ink); }
.metric-card .mc-rows { margin: 0; display: grid; gap: 6px; }
.metric-card .mc-rows > div { display: grid; grid-template-columns: 76px 1fr; gap: 8px; }
.metric-card dt { color: var(--ink-3); font-size: var(--t-xs); padding-top: 1px; }
.metric-card dd { margin: 0; }
.metric-card .mc-src { display: inline-block; margin-left: 2px; padding: 0 6px; border-radius: var(--r-pill); background: var(--surface-3); color: var(--ink-2); font-size: var(--t-micro); white-space: nowrap; }
.metric-card .mc-margin, .metric-card .mc-eval { margin: 10px 0 0; padding-top: 8px; border-top: 1px solid var(--line); font-size: var(--t-xs); }
.metric-card .mc-eval + .mc-eval, .metric-card .mc-margin + .mc-eval { margin-top: 6px; padding-top: 0; border-top: 0; }
.metric-card .mc-eval b { color: var(--ink); font-weight: 600; }
.metric-card .mc-eval.warn { color: var(--warn-text); }
.metric-card .mc-sample { padding: 0 5px; border-radius: var(--r-pill); background: var(--warn-soft); color: var(--warn-text); font-size: var(--t-micro); }
.metric-card .mc-open { margin: 10px 0 0; padding: 8px 10px; border-radius: var(--r-xs); background: var(--surface-2); border: 1px dashed var(--line-2); font-size: var(--t-xs); }
.metric-card .mc-open b { color: var(--ink); font-weight: 600; }
.metric-card .mc-open summary { cursor: pointer; }
.metric-card .mc-open ul { margin: 4px 0 0; padding-left: 18px; }
.metric-card .mc-foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; margin-top: 12px; }
.metric-card .mc-note { margin: 0; font-size: var(--t-xs); color: var(--ink-3); flex: 1 1 100%; }
.metric-card .mc-about { font-size: var(--t-xs); margin: 0; }

/* Phone: a bottom sheet with a light scrim */
.metric-card.sheet {
  left: 0 !important; right: 0; top: auto !important; bottom: 0;
  width: 100%; max-height: 82vh; border-radius: var(--r-lg) var(--r-lg) 0 0;
  padding: 18px 18px calc(18px + env(safe-area-inset-bottom));
  transform: translate3d(0, 24px, 0);
  transition: opacity var(--t-panel) var(--settle), transform var(--t-panel) var(--settle);
}
.metric-card.sheet.show { transform: none; }
.metric-card.sheet .mc-foot .btn { flex: 1 1 auto; min-height: 44px; }
.metric-card.sheet .mc-x { width: 44px; height: 44px; margin: -12px -12px -12px 0; }
.metric-scrim { position: fixed; inset: 0; z-index: 94; background: rgba(10, 46, 33, 0.22); opacity: 0; transition: opacity var(--t-med) var(--ease-std); }
.metric-scrim.show { opacity: 1; }
@media (prefers-reduced-motion: reduce) { .metric-card, .metric-card.sheet, .metric-scrim { transition: none; } }

/* The ⓘ next to a number keeps the look of the other hints */
.stat .k .metric-hint, .lt-top .metric-hint, .lg .metric-hint, .digest-stats .k .metric-hint, th .metric-hint { margin-left: 2px; }
.lt-top .metric-hint { margin-left: auto; }
.lt-top .metric-hint + .ico { margin-left: 0; }
th .metric-hint { width: 16px; height: 16px; }

/* Settings → About this app */
.about-app .about-purpose { margin: 0 0 4px; color: var(--ink); font-size: var(--t-sm); }
.about-app .about-p { margin: 0 0 6px; font-size: var(--t-xs); color: var(--ink-2); }
.about-app .about-roles .kv-row > span:last-child { white-space: normal; font-weight: 400; text-align: right; flex: 1 1 60%; color: var(--ink-2); }
.about-app .about-roles .kv-row > span:first-child { flex: none; }
.about-app .about-roles b { color: var(--ink); font-weight: 600; }
.about-app .about-sources { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 4px 16px; font-size: var(--t-xs); }
.about-app .about-sources li { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 3px 0; border-bottom: 1px solid var(--line); }
.about-app .about-list { margin: 0; padding-left: 18px; font-size: var(--t-sm); color: var(--ink-2); }
.about-app .about-list li + li { margin-top: 2px; }
.about-app .about-metrics { display: flex; flex-wrap: wrap; gap: 6px; }
.about-app .about-metric { display: inline-flex; align-items: center; gap: 2px; padding: 2px 4px 2px 10px; border-radius: var(--r-pill); background: var(--surface-2); border: 1px solid var(--line); font-size: var(--t-xs); color: var(--ink-2); }
.about-app .about-note { margin: 14px 0 0; font-size: var(--t-xs); }
@media (max-width: 767px) { .about-app .about-metric .metric-hint { width: 32px; height: 32px; } }