/* The info control — see js/info.js for the behaviour contract.
 *
 * THE BUTTON is the one round thing in a square-edged system, deliberately: a
 * hairline circle holding an italic Delight "i" reads as a glyph, not as one
 * more box competing with the .est-block and .dep-tag borders around it. At
 * rest it is --muted (a secondary mark beside a heading, not a call to
 * action); hover, focus and open bring it to --text with an accent ring, the
 * same rest/active pair the rail and .dash-link use.
 *
 * THE POPOVER is a flat panel on --surface with the app's 1px border and, on
 * top, the 2px accent rule the divergence block and the rail's active item
 * already use to mean "read this". No radius, a deep soft shadow because it
 * floats over tables, and a notch under the button so it's clear which "i"
 * it belongs to. Caption at the .sum-label scale, body at 12px/1.65 in --text
 * — this is prose people act on, so it isn't dimmed.
 */

.info {
  display: inline-block;
  vertical-align: middle;
  line-height: 0;
  /* Headings and captions around it are uppercase and tracked; none of that
     should reach the popover's sentences. */
  text-transform: none;
  letter-spacing: normal;
  font-weight: 400;
}

.info-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-left: 8px;
  padding: 0;
  border: 1px solid var(--muted2);
  border-radius: 50%;
  background: none;
  color: var(--muted);
  font-family: 'Delight', 'Georgia', serif;
  font-style: italic;
  font-weight: 600;
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
/* 44px to a thumb without making the mark itself bigger: an invisible hit
   area centred on the circle. -14px, not -13: an absolute child's inset is
   measured from inside the 1px border, so the box it grows from is 16px, not
   18 — -13 made it 42px (caught by the responsive pass, 2026-09-28). */
.info-btn::after {
  content: '';
  position: absolute;
  inset: -14px;
}
.info-btn:hover,
.info-btn:focus-visible,
.info-btn[aria-expanded='true'] {
  color: var(--text);
  border-color: var(--accent);
}

.info-pop {
  position: fixed;
  z-index: 60;
  display: block;
  box-sizing: border-box;
  padding: 14px 16px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45);
  line-height: 1.65;
  text-align: left;
  white-space: normal;
  animation: info-in 0.12s ease-out;
}
.info-pop[hidden] {
  display: none;
}
.info-pop:focus-visible {
  outline: 2px solid transparent;
  outline-offset: 2px;
  box-shadow: var(--shadow-focus);
}
/* The notch: a square turned 45°, carrying the panel's own border on the two
   sides that face the button. Above the panel it sits in the accent rule;
   when the panel is flipped above the button it moves to the bottom edge. */
.info-pop::before {
  content: '';
  position: absolute;
  top: -6px;
  left: calc(var(--info-nub-x, 20px) - 5px);
  width: 8px;
  height: 8px;
  background: var(--surface);
  border-left: 2px solid var(--accent);
  border-top: 2px solid var(--accent);
  transform: rotate(45deg);
}
.info-pop.info-pop-above::before {
  top: auto;
  bottom: -5px;
  border: none;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.info-pop-t {
  display: block;
  margin-bottom: 8px;
  font-size: var(--font-size-sm);
  letter-spacing: var(--letter-spacing-normal);
  color: var(--muted);
}
.info-pop-p {
  display: block;
  font-family: var(--font-family-body);
  font-size: 12px;
  color: var(--text);
}
.info-pop-p + .info-pop-p {
  margin-top: 8px;
}
.info-pop-p strong {
  font-weight: 600;
}

@keyframes info-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@media (prefers-reduced-motion: reduce) {
  .info-pop {
    animation: none;
  }
  .info-btn {
    transition: none;
  }
}