/* ============================================================
   glossary.css
   Part 1 — the .gloss tag and its popover. Load this on any page
            that tags words, alongside glossary-tip.js.
   Part 2 — the glossary page itself.
   Tokens come from style.css / curriculum.css / themes.css.
   ============================================================ */

/* ── 1. TAGGED WORDS ─────────────────────────────────────── */

.gloss {
  border-bottom: 2px dotted var(--accent);
  cursor: help;
  transition: background var(--transition), border-color var(--transition);
}
.gloss:hover,
.gloss:focus-visible,
.gloss.is-open {
  background: var(--accent-bg);
  border-bottom-color: var(--accent);
  border-bottom-style: solid;
  outline: none;
}
.gloss[data-gloss="missing"] {
  border-bottom: 1px dashed var(--amber);
}

.gloss-pop {
  position: absolute;
  z-index: 900;
  width: min(22rem, calc(100vw - 1.5rem));
  padding: 0.75rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  font-family: var(--font-body);
  line-height: 1.5;
}
.gloss-pop-term {
  display: block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
}
.gloss-pop-def {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.85rem;
  color: var(--muted);
}
.gloss-pop-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.55rem;
}
.gloss-pop-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.03em;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-pill);
  background: var(--accent-bg);
  color: var(--accent);
  text-decoration: none;
}
.gloss-pop-chip:hover { text-decoration: underline; }

/* ── 2. GLOSSARY PAGE ────────────────────────────────────── */

.gl-main {
  max-width: var(--curr-max-w, 1200px);
  margin: 0 auto;
  padding: 1.75rem 1.25rem 3rem;
}

.gl-head { margin-bottom: 1.25rem; }
.gl-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.5vw, 2.3rem);
  line-height: 1.15;
}
.gl-sub {
  margin-top: 0.4rem;
  max-width: 62ch;
  color: var(--muted);
  font-size: 0.95rem;
}

/* controls */
.gl-controls {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 0.75rem 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.gl-search-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}
.gl-search {
  flex: 1 1 16rem;
  padding: 0.55rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
}
.gl-search:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.gl-count {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}
.gl-btn {
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.gl-btn:hover { background: var(--surface-2); }

.gl-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.6rem;
}
.gl-topic {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.22rem 0.5rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  cursor: pointer;
}
.gl-topic:hover { border-color: var(--border-strong); color: var(--text); }
.gl-topic.is-on {
  color: var(--accent);
  background: var(--accent-bg);
  border-color: var(--accent);
  font-weight: 700;
}

.gl-alpha {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  margin-top: 0.6rem;
}
.gl-alpha a, .gl-alpha span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  min-width: 1.4rem;
  padding: 0.15rem 0.25rem;
  text-align: center;
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.gl-alpha a { color: var(--accent); }
.gl-alpha a:hover { background: var(--accent-bg); text-decoration: none; }
.gl-alpha span { color: var(--border-strong); }

/* entries */
.gl-letter {
  margin: 1.75rem 0 0.6rem;
  padding-bottom: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}
.gl-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(21rem, 1fr));
  gap: 0.75rem;
}
.gl-entry {
  padding: 0.85rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 9rem;
}
.gl-entry:target {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}
.gl-term {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
}
.gl-def {
  margin-top: 0.35rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.gl-note {
  margin-top: 0.45rem;
  padding-left: 0.6rem;
  border-left: 2px solid var(--border);
  font-size: 0.82rem;
  color: var(--muted);
  white-space: pre-line;
}
.gl-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.6rem;
}
.gl-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.03em;
  padding: 0.12rem 0.45rem;
  border-radius: var(--radius-pill);
  background: var(--accent-bg);
  color: var(--accent);
  text-decoration: none;
}
.gl-chip:hover { text-decoration: underline; }
.gl-hit { background: var(--amber-bg); color: var(--text); border-radius: 2px; }

.gl-empty {
  padding: 2.5rem 0;
  text-align: center;
  color: var(--muted);
}

@media (max-width: 640px) {
  .gl-controls { position: static; }
  .gl-list { grid-template-columns: 1fr; }
}