:root {
  --glossary-w: clamp(340px, 38vw, 560px);
}

/* ── scrim (click to dismiss; sits above the PDF pane) ─────── */
.glossary-scrim {
  position: fixed;
  inset: 0;
  z-index: 55;
  background: rgba(26, 24, 20, 0.28);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0s linear 0.4s;
}
.glossary-scrim[data-open='true'] {
  opacity: 1;
  visibility: visible;
  transition: opacity 0.4s ease, visibility 0s linear 0s;
}

/* ── pane ─────────────────────────────────────────────────── */
.glossary-pane {
  position: fixed;
  top: 0;
  right: 0;
  width: var(--glossary-w);
  height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border-left: 1px solid var(--rule);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.1);
  z-index: 60;
  transform: translateX(100%);
  transition:
    transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s linear 0.5s;
  visibility: hidden;
  outline: none;
}
.glossary-pane[data-open='true'] {
  transform: translateX(0);
  visibility: visible;
  transition:
    transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
    visibility 0s linear 0s;
}

/* ── header ───────────────────────────────────────────────── */
.glossary-pane-header {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.7rem 0.95rem;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(6px);
  flex-shrink: 0;
}
.glossary-pane-kicker {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  flex-shrink: 0;
}
.glossary-pane-title {
  font-family: var(--serif-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.glossary-close {
  background: none;
  border: 1px solid var(--rule);
  border-radius: 4px;
  font-size: 1rem;
  line-height: 1;
  padding: 0.15rem 0.45rem;
  color: var(--ink-soft);
  cursor: pointer;
  flex-shrink: 0;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.glossary-close:hover {
  color: var(--ink);
  border-color: var(--ink-soft);
}

/* ── scroll area ──────────────────────────────────────────── */
.glossary-pane-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1.25rem 1.1rem 2rem;
}
.glossary-image {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: #fff;
}
.glossary-blurb {
  margin-top: 1rem;
  font-family: var(--serif-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ── mobile: full-width bottom sheet ──────────────────────── */
@media (max-width: 1024px) {
  .glossary-pane {
    width: 100vw;
    height: 88dvh;
    top: auto;
    bottom: 0;
    right: 0;
    border-left: none;
    border-top: 1px solid var(--rule);
    border-radius: 12px 12px 0 0;
    transform: translateY(100%);
    transition:
      transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0.5s;
  }
  .glossary-pane[data-open='true'] {
    transform: translateY(0);
    transition:
      transform 0.5s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0s;
  }
}

/* ── reduced motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .glossary-pane,
  .glossary-pane[data-open='true'] {
    transition: visibility 0s linear 0s;
  }
  .glossary-scrim,
  .glossary-scrim[data-open='true'] {
    transition: visibility 0s linear 0s;
  }
}