/* 後台頁面 */

body.admin {
  min-height: 100dvh;
  padding: 24px clamp(16px, 4vw, 48px) 48px;
  overflow-y: auto;
  background: var(--paper);
}
.admin-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto 16px;
}
.admin-header h1 { margin: 0; font-family: var(--serif); font-weight: 900; color: var(--green); font-size: 28px; }
.muted { color: var(--muted); margin: 4px 0 0; }
.back-link { color: var(--green); font-weight: 700; text-decoration: none; }

.admin-tabs { display: flex; gap: 6px; max-width: 1100px; margin: 0 auto 16px; }
.admin-tabs[hidden] { display: none; }
.admin-tabs button {
  padding: 8px 20px;
  border: 0;
  border-radius: 999px;
  background: var(--mint);
  font-weight: 700;
  color: var(--green);
}
.admin-tabs button[aria-selected="true"] { background: var(--green); color: #FFFDF8; }

main { max-width: 1100px; margin: 0 auto; }
.tab-panel[hidden], .panel[hidden] { display: none; }
.panel {
  margin: 0 0 16px;
  padding: 20px;
  border-radius: 16px;
  background: var(--card);
  box-shadow: 0 2px 10px rgba(27, 77, 70, 0.06);
}
.panel h2 { margin: 0 0 12px; font-family: var(--serif); font-size: 18px; color: var(--green); }

.inline-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; margin: 0 0 12px; }
.inline-form label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; font-size: 13px; }
.inline-form input, .inline-form select {
  min-height: 40px;
  min-width: 180px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--paper);
}
.inline-form[hidden], .inline-form label[hidden] { display: none; }

.btn {
  min-height: 40px;
  padding: 0 16px;
  border: 0;
  border-radius: 10px;
  background: var(--orange);
  color: #FFFDF8;
  font-weight: 700;
}
.btn.small { min-height: 30px; padding: 0 10px; font-size: 12px; }
.btn.ghost { background: var(--mint); color: var(--green); }
.btn.danger { background: #FBE4DC; color: var(--orange-text); }
.btn[hidden] { display: none; }

.invite-box { margin-top: 8px; padding: 12px 16px; border-radius: 12px; background: var(--mint); }
.invite-box p { margin: 0 0 8px; }
.copy-row { display: flex; gap: 8px; }
.copy-row input { flex: 1; min-height: 40px; padding: 0 10px; border: 1px solid var(--line); border-radius: 10px; font-size: 13px; }

.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th { text-align: left; color: var(--muted); font-weight: 600; padding: 8px; border-bottom: 1px solid var(--line); }
.data-table td { padding: 10px 8px; border-bottom: 1px solid var(--line); }
.data-table td:last-child { white-space: nowrap; text-align: right; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; background: var(--mint); font-size: 12px; font-weight: 700; color: var(--green); }
.badge.wait { background: #FFF0E3; color: var(--orange-text); }

.lot-map { position: relative; width: 100%; border-radius: 12px; background: #EEDFC6; overflow: hidden; }
.lot {
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 4px;
  border: 2px solid #FFFDF8;
  border-radius: 6px;
  background: #F6F2EA;
  font-size: 12px;
  line-height: 1.3;
  text-align: center;
  overflow: hidden;
}
.lot small { color: var(--muted); }
.lot.office { background: #F3E3D3; }
.lot.meeting { background: #DCE8E4; }
.lot.lounge { background: #FBE4D6; }
.lot.empty { background: transparent; border-style: dashed; border-color: rgba(27, 77, 70, 0.4); color: var(--green); font-weight: 700; }
.lot[aria-pressed="true"] { outline: 3px solid var(--orange); outline-offset: -3px; }

.kind-row { display: flex; gap: 16px; margin-bottom: 12px; font-weight: 600; }
.design-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-bottom: 16px; }
.design {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  border: 2px solid transparent;
  border-radius: 14px;
  background: var(--paper);
  text-align: left;
}
.design canvas { width: 100%; height: auto; border-radius: 8px; background: var(--mint); }
.design strong { font-family: var(--serif); color: var(--green); }
.design small { color: var(--muted); }
.design[aria-pressed="true"] { border-color: var(--orange); background: #FFF3EC; }

.room-detail { display: grid; grid-template-columns: minmax(200px, 340px) 1fr; gap: 20px; align-items: start; }
.room-preview { width: 100%; height: auto; border-radius: 12px; background: var(--mint); }
@media (max-width: 760px) {
  .room-detail { grid-template-columns: 1fr; }
  .data-table th:nth-child(2), .data-table td:nth-child(2) { display: none; }
}
.sub-title { margin: 16px 0 8px; font-family: var(--serif); font-size: 15px; color: var(--green); }
.design-list.compact { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
.divider { margin: 16px 0; border: 0; border-top: 1px solid var(--line); }

.recurrence { display: flex; gap: 12px; align-items: center; border: 0; padding: 0; margin: 0; font-weight: 600; }
.recurrence legend { font-size: 13px; margin-bottom: 4px; }
.weekly-fields { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.weekly-fields[hidden] { display: none; }
.weekdays { display: flex; flex-wrap: wrap; gap: 6px; }
.weekday { display: flex; align-items: center; gap: 4px; padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; font-weight: 600; font-size: 13px; }
.class-list { display: grid; gap: 12px; }
.class-card { padding: 16px; border-radius: 14px; background: var(--paper); }
.class-card header { display: flex; align-items: center; gap: 10px; }
.class-card h3 { margin: 0; font-family: var(--serif); color: var(--green); }
.student-list { list-style: none; margin: 10px 0; padding: 0; display: grid; gap: 6px; }
.student-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.student-row > span { min-width: 72px; font-weight: 700; }
.link-box { flex: 1; min-width: 200px; min-height: 30px; padding: 0 8px; border: 1px solid var(--line); border-radius: 8px; font-size: 12px; }
.inline-form.compact input { min-width: 140px; min-height: 32px; }
.card-actions { display: flex; gap: 8px; justify-content: flex-end; }
.blackout-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.blackout-list li { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 8px 12px; border-radius: 10px; background: var(--paper); }
.inline-form input[type="radio"], .inline-form input[type="checkbox"] { min-width: 0; min-height: 0; width: auto; padding: 0; }
.recurrence label { flex-direction: row; align-items: center; gap: 6px; font-size: 14px; }

/* ---------- 總體課表 ---------- */
.week-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.week-head h2 { margin: 0; }
.week-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.week-filter select { min-height: 30px; padding: 0 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.week-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; }
.day { display: flex; flex-direction: column; gap: 6px; min-height: 140px; padding: 8px; border-radius: 12px; background: var(--paper); }
.day.today { background: var(--mint); box-shadow: inset 0 0 0 2px var(--green); }
.day h3 { margin: 0 0 4px; font-size: 13px; color: var(--green); }
.day .empty { margin: 0; color: var(--muted); font-size: 12px; }
.chip {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-left: 4px solid #B8B2AC;
  border-radius: 8px;
  background: var(--card);
  text-align: left;
  font-size: 12px;
  line-height: 1.35;
  transition: transform 150ms, box-shadow 150ms;
}
.chip:hover { transform: translateY(-1px); box-shadow: 0 3px 8px rgba(27, 77, 70, 0.12); }
.chip strong { color: var(--ink); }
.chip span { font-weight: 700; color: var(--green); }
.chip small { color: var(--muted); }
.chip.mine { border-left-color: var(--orange); background: #FFF6F0; }
.chip.cancelled span, .chip.cancelled strong { text-decoration: line-through; opacity: 0.6; }
.chip[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--orange); }
.legend { display: flex; align-items: center; gap: 6px; margin-top: 12px; font-size: 12px; }
.chip-dot { display: inline-block; width: 10px; height: 10px; border-radius: 3px; background: #B8B2AC; }
.chip-dot.mine { background: var(--orange); }
.link-row .link-box { flex: 1; }
@media (max-width: 860px) {
  .week-grid { grid-template-columns: 1fr; }
  .day { min-height: 0; }
}

/* ---------- 時區 ---------- */
.admin-header-tools { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 12px; }
.tz-picker { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--muted); }
.tz-picker select { max-width: 260px; min-height: 34px; padding: 0 8px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); color: var(--ink); }
#class-time-preview:empty { display: none; }
#class-time-preview { color: var(--green); font-weight: 600; }