/* matching.css — join-the-two-columns practice (paired with matching.js).
 * With no JS the two columns and the answer line are the printed exercise. */

.match {
  margin: var(--s-3) 0;
  padding: var(--s-3);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.match > * { min-width: 0; }
.match .task { margin: 0 0 var(--s-2); font-weight: 700; }

/* the two columns sit as on the paper: numbered items on the right, lettered on the left */
.match-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-2);
  direction: rtl;
}
.match-cols > * { min-width: 0; }

.match ol { list-style: none; margin: 0; padding: 0; counter-reset: mi; }
.match li {
  position: relative;
  margin: 0 0 var(--s-1);
  padding: 2px 10px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--panel);
  text-align: right;
  overflow-wrap: break-word;
}
.match .from > li::before { counter-increment: mi; content: counter(mi, arabic-indic) "- "; color: var(--muted); }
.match .to > li::before { content: attr(data-key) "- "; color: var(--muted); }

.match-js li { cursor: pointer; }
.match-js li:hover { border-color: var(--accent); }
.match-js li:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.match li.sel { background: var(--blue-bg); border-color: var(--accent); box-shadow: 0 0 0 2px var(--blue-edge); }
.match li.ok  { background: var(--green-bg); border-color: var(--green-edge); cursor: default; }
.match li.bad { background: var(--amber-bg); border-color: var(--amber-edge); }

/* a joined partner wears the number of the item it was joined to */
.match .to > li.ok { padding-left: 2.6em; }
.match .to > li.ok::after {
  content: attr(data-pair);
  position: absolute;
  left: 8px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--arabic);
  font-size: .8em; line-height: 1.6;
  padding: 0 7px;
  border-radius: 999px;
  background: var(--panel);
  border: 1px solid var(--green-edge);
  color: var(--green);
}

.match .answer { margin: var(--s-2) 0 0; }
.match-status { margin: var(--s-1) 0 0; min-height: 1.4em; font: 500 12px/1.5 var(--mono); color: var(--accent-ink); }
.match.done .match-status { color: var(--green); font-weight: 700; }
#match-score { font: 600 12px/1.6 var(--mono); color: var(--muted); }

@media print {
  .match-status { display: none; }
  .match .answer { display: block !important; }
}