/* The lesson list: search, subject filters and one compact row per lesson. */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.tools { margin: 1.25rem 0 0.6rem; }
.search { display: block; }
.search input {
  width: 100%;
  height: 48px;
  padding: 0.4rem 0.9rem;
  background: var(--card);
  border: 2px solid var(--line);
  border-radius: 12px;
  color: var(--ink);
  font: inherit;
  font-size: 1.05rem;
}
.search input:focus-visible { outline: 3px solid var(--accent); outline-offset: 1px; }
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 0.4rem;
}
.chip {
  min-height: 40px;
  padding: 0.2rem 0.85rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.95rem;
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
}
.chip .n { margin-left: 0.35em; font-size: 0.85em; opacity: 0.75; }
.status {
  min-height: 1.5rem;
  margin: 0.25rem 0 0.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}
table.lessons {
  width: 100%;
  border-collapse: collapse;
}
.lessons th {
  padding: 0;
  border-bottom: 2px solid var(--line);
  text-align: left;
}
.lessons .sort {
  width: 100%;
  min-height: 40px;
  padding: 0.3rem 0.5rem;
  background: none;
  border: 0;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}
.lessons th[aria-sort] .sort { color: var(--ink); }
.lessons .sort:hover { color: var(--accent); }
.lessons td {
  padding: 0 0.5rem;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}
.lessons tbody tr:hover { background: var(--card); }
.col-title a {
  display: block;
  padding: 0.7rem 0;
  color: var(--ink);
  font-weight: 700;
  line-height: 1.3;
  text-decoration: none;
}
.col-title a:hover { color: var(--accent); text-decoration: underline; }
/* Subject and date take only the room they need. */
.col-subject, .col-added { width: 1%; white-space: nowrap; }
td.col-subject, td.col-added { font-size: 0.9rem; color: var(--muted); }
td.col-subject a { color: var(--muted); }
.empty {
  padding: 1.5rem 0;
  text-align: center;
  color: var(--muted);
}
.empty p { margin: 0 0 0.75rem; font-size: 1.1rem; }
@media (max-width: 30rem) {
  .year { display: none; }
}