/* ==========================================================================
   NTPU AI4X | AI faculty directory
   Add-on stylesheet for the JSON-driven NTPU AI 教師群 section on the members
   pages. Loaded after assets/styles.css; every selector is namespaced under
   `faculty-` so the shared design system is left untouched, and the cards
   themselves keep reusing .member-grid / .member-card.
   ========================================================================== */

/* ---- Toolbar: search + filters ------------------------------------------ */
.faculty-toolbar {
  display: grid;
  gap: 0.95rem;
  padding: 1.15rem 1.3rem;
  margin: 1.4rem 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.faculty-search { display: grid; gap: 0.35rem; }
.faculty-search__label,
.faculty-chips__label {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}
.faculty-search__input {
  width: 100%;
  min-height: 44px;
  padding: 0.45rem 0.75rem;
  color: var(--ink);
  font: inherit;
  font-size: 0.98rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.faculty-search__input::placeholder { color: rgba(74, 93, 110, 0.75); }
.faculty-search__input:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* Every filter is a row of chips — research domain, college, rank — so they
   read the same way and are one click apart. Real buttons, so keyboard focus
   and activation are the browser's own. */
.faculty-chips-block { display: grid; gap: 0.45rem; }
.faculty-chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.faculty-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.42rem 0.95rem;
  min-height: 40px;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.92rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  text-align: left;
}
.faculty-chip:hover { color: var(--blue); border-color: rgba(13, 74, 158, 0.4); }
.faculty-chip:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.faculty-chip__count {
  padding: 0 0.45rem;
  border-radius: 999px;
  background: rgba(13, 74, 158, 0.1);
  color: var(--blue);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.faculty-chip[aria-pressed="true"] {
  color: #fff;
  font-weight: 700;
  background: var(--blue);
  border-color: var(--blue);
}
.faculty-chip[aria-pressed="true"] .faculty-chip__count {
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
}

/* College and rank are secondary to the domains: same shape, quieter weight,
   so the eye still lands on the research domains first. */
.faculty-chips--sub .faculty-chip {
  min-height: 34px;
  padding: 0.3rem 0.8rem;
  font-size: 0.88rem;
}
.faculty-chips--sub .faculty-chip__count { font-size: 0.78rem; }

/* Any / all switch. Hidden until at least two domains are selected, because
   with one domain the two modes are the same query. */
.faculty-mode {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}
.faculty-mode[hidden] { display: none; }
.faculty-mode__btn {
  padding: 0.32rem 0.85rem;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.9rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}
.faculty-mode__btn:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.faculty-mode__btn[aria-pressed="true"] {
  color: var(--blue);
  font-weight: 700;
  background: rgba(13, 74, 158, 0.1);
  border-color: rgba(13, 74, 158, 0.4);
}

.faculty-switches {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.4rem;
}
.faculty-check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
  cursor: pointer;
}
.faculty-check input { width: 18px; height: 18px; accent-color: var(--blue); }

.faculty-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}
.faculty-count {
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}
.faculty-clear {
  padding: 0.35rem 0.9rem;
  color: var(--blue);
  font: inherit;
  font-size: 0.92rem;
  background: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}
.faculty-clear:hover { background: rgba(13, 74, 158, 0.07); }
.faculty-clear[hidden] { display: none; }

/* ---- Results ------------------------------------------------------------ */

/* Rank chip and college sit on one line at the top of a card. The college is a
   button: it filters, and it repeats what the College select offers. */
.faculty-card__labels {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}
.faculty-college {
  padding: 0.22rem 0.72rem;
  color: var(--ink-soft);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.5;
  background: rgba(12, 26, 42, 0.05);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
}
.faculty-college::before {
  content: "";
  display: inline-block;
  width: 0.44rem;
  height: 0.44rem;
  margin-inline-end: 0.42rem;
  border-radius: 50%;
  background: currentColor;
  vertical-align: 0.08em;
  opacity: 0.55;
}
.faculty-college:hover { color: var(--blue); border-color: rgba(13, 74, 158, 0.4); }
.faculty-college:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.member-card.a2 .faculty-college:hover { color: var(--cyan); border-color: rgba(17, 168, 160, 0.45); }
.member-card.a3 .faculty-college:hover { color: var(--violet); border-color: rgba(109, 74, 217, 0.45); }
.member-card.a4 .faculty-college:hover { color: var(--clay); border-color: rgba(184, 92, 58, 0.45); }

/* Domain chips inside a card double as filters, so they are buttons styled to
   sit alongside the plain .member-tags pills above them. */
.faculty-domains {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.faculty-domain {
  padding: 0.22rem 0.7rem;
  color: var(--blue);
  font: inherit;
  font-size: 0.95rem;
  line-height: 1.5;
  background: rgba(13, 74, 158, 0.08);
  border: 1px dashed rgba(13, 74, 158, 0.35);
  border-radius: 999px;
  cursor: pointer;
}
.faculty-domain:hover { background: rgba(13, 74, 158, 0.16); }
.faculty-domain:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.member-card.a2 .faculty-domain { color: var(--cyan); background: rgba(17, 168, 160, 0.12); border-color: rgba(17, 168, 160, 0.4); }
.member-card.a3 .faculty-domain { color: var(--violet); background: rgba(109, 74, 217, 0.1); border-color: rgba(109, 74, 217, 0.4); }
.member-card.a4 .faculty-domain { color: var(--clay); background: rgba(184, 92, 58, 0.1); border-color: rgba(184, 92, 58, 0.4); }

/* Both live inside the results grid, so they span every column instead of
   sitting in a single card-width cell. */
.faculty-empty,
.faculty-message {
  grid-column: 1 / -1;
  padding: 1.6rem 1.3rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink-soft);
  text-align: center;
}
.faculty-empty__title { margin: 0 0 0.3rem; color: var(--ink); font-weight: 700; }
.faculty-empty__hint { margin: 0; font-size: 0.95rem; }
.faculty-message--error { color: var(--clay); }

@media (max-width: 700px) {
  .faculty-toolbar { padding: 1rem; }
  .faculty-status { justify-content: flex-start; }
}