/* ============================================================
   department.css — "The Department" flagship authority page
   ------------------------------------------------------------
   ADDITIVE · PAGE-SCOPED (body.page-department) · loaded AFTER style.css.
   Reuses V2 tokens, typography, spacing, motion and component feel.
   Edits nothing frozen (style.css / main.js untouched). The focused
   overlay mirrors the study-panel pattern (scrim → focus → scroll-lock →
   Esc/backdrop close) in a centred, zero-layout-shift form.
   ============================================================ */

/* ---------------- HERO ---------------- */
.page-department .dept-hero {
  padding-block: var(--s-7) var(--s-6);
  border-bottom: 1px solid var(--border);
}
.page-department .dept-hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--s-5);
  align-items: center;
}
.page-department .dept-hero__title { margin: .35rem 0 0; }
.page-department .dept-hero__sub {
  margin: .6rem 0 0;
  font-size: var(--fs-300);
  letter-spacing: .01em;
  color: var(--accent);
  font-weight: 600;
}
.page-department .dept-hero__lead { margin-top: 1.4rem; max-width: 46ch; }
.page-department .dept-hero__place {
  margin-top: 1.6rem;
  display: flex; align-items: center; gap: .8rem;
  font-size: var(--fs-100);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-faint, #8A857E);
}
.page-department .dept-hero__place-rule { width: 34px; height: 1px; background: var(--accent); display: inline-block; }

.page-department .dept-hero__media { margin: 0; }
.page-department .dept-hero__media img {
  width: 100%; height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
  display: block;
}

/* ---------------- INDEX / CARD GRID ---------------- */
.page-department .dept-grid {
  list-style: none; margin: var(--s-4) 0 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-3);
}
.page-department .dept-grid > li { display: flex; }

.page-department .dept-card {
  flex: 1 1 auto;
  display: flex; flex-direction: column;
  width: 100%;
  text-align: left;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--s-3);
  cursor: pointer;
  font-family: var(--font-sans);
  color: var(--text);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-department .dept-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: var(--border-strong);
}
.page-department .dept-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.page-department .dept-card__num {
  font-size: var(--fs-500);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--accent-soft);
  font-variant-numeric: tabular-nums;
}
.page-department .dept-card__title {
  margin-top: .8rem;
  font-size: var(--fs-300);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text);
}
.page-department .dept-card__stand {
  margin-top: .55rem;
  flex: 1 1 auto;
  font-size: var(--fs-200);
  line-height: 1.5;
  color: var(--text-muted);
}
.page-department .dept-card__open {
  margin-top: 1.1rem;
  font-size: var(--fs-100);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
}
.page-department .dept-card__open .btn__arrow { transition: transform var(--dur) var(--ease); display: inline-block; }
.page-department .dept-card:hover .dept-card__open .btn__arrow { transform: translateX(3px); }

/* Signature area (III) — restrained emphasis only: accent rule + accent numeral. */
.page-department .dept-card--signature {
  border-top: 2px solid var(--accent);
}
.page-department .dept-card--signature .dept-card__num { color: var(--accent); }

/* ---------------- FOCUSED OVERLAY ---------------- */
.page-department .dept-scrim {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(24, 24, 27, .55);
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility 0s linear var(--dur);
}
.page-department .dept-scrim.is-open {
  opacity: 1; visibility: visible;
  transition: opacity var(--dur) var(--ease);
}

.page-department .dept-overlay {
  position: fixed; inset: 0; z-index: 210;
  display: grid; place-items: center;
  padding: var(--s-3);
  opacity: 0; visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility 0s linear var(--dur);
}
.page-department .dept-overlay.is-open {
  opacity: 1; visibility: visible;
  transition: opacity var(--dur) var(--ease);
}

.page-department .dept-overlay__panel {
  position: relative;
  width: min(680px, 100%);
  max-height: min(86vh, 880px);
  overflow: auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-2);
  padding: clamp(1.5rem, 4vw, 3rem);
  transform: translateY(10px);
  transition: transform var(--dur) var(--ease);
}
.page-department .dept-overlay.is-open .dept-overlay__panel { transform: none; }

.page-department .dept-overlay__close {
  position: absolute; top: .9rem; right: .9rem;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background: #fff; color: var(--text);
  font-size: 1.4rem; line-height: 1;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-department .dept-overlay__close:hover { color: var(--accent); border-color: var(--accent); }
.page-department .dept-overlay__close:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.page-department .dept-overlay__body { outline: none; }
.page-department .dept-overlay__body .kicker {
  display: inline-flex; color: var(--accent); font-weight: 700;
}
.page-department .dept-overlay__body .kicker::before { background: var(--accent); }
.page-department .dept-overlay__body h2 {
  margin: .5rem 0 0;
  font-size: var(--fs-500);
  line-height: 1.15;
  color: var(--text);
  max-width: 22ch;
}
.page-department .dept-overlay__body .lead {
  margin-top: 1rem;
  color: var(--accent);
  font-size: var(--fs-300);
}
.page-department .dept-overlay__body p { margin-top: 1rem; color: var(--text-muted); line-height: 1.65; }
.page-department .dept-overlay__body p:first-of-type { margin-top: 0; }
.page-department .dept-overlay__body em { color: var(--text); font-style: italic; }

/* Body scroll-lock (JS adds .dept-lock + a padding-right compensation inline) */
body.dept-lock { overflow: hidden; }

/* ---------------- RESPONSIVE ---------------- */
@media (max-width: 920px) {
  .page-department .dept-hero__grid { grid-template-columns: 1fr; gap: var(--s-4); }
  .page-department .dept-hero__media { order: -1; }
  .page-department .dept-hero__media img { aspect-ratio: 16 / 10; }
  .page-department .dept-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .page-department .dept-hero { padding-block: var(--s-6) var(--s-5); }
  .page-department .dept-grid { grid-template-columns: 1fr; gap: var(--s-2); }
  .page-department .dept-card { padding: var(--s-3) var(--s-2); }
  .page-department .dept-overlay { padding: 0; place-items: stretch; }
  .page-department .dept-overlay__panel {
    width: 100%; max-height: 100dvh; border-radius: 0; border: 0;
    padding: calc(var(--s-5) + .5rem) var(--s-3) var(--s-4);
  }
}

/* ---------------- REDUCED MOTION ---------------- */
@media (prefers-reduced-motion: reduce) {
  .page-department .dept-card,
  .page-department .dept-scrim,
  .page-department .dept-overlay,
  .page-department .dept-overlay__panel,
  .page-department .dept-card__open .btn__arrow {
    transition: none !important;
  }
  .page-department .dept-overlay__panel { transform: none !important; }
}