/* Students list page — filters, tabs, course chips, table, pagination */

.page { padding: 24px 32px 80px; max-width: none; }

/* Breadcrumb */
.crumb { font-size: 12.5px; color: var(--fg-secondary); margin-bottom: 10px; display: flex; gap: 6px; align-items: center; }
.crumb .sep { color: var(--slate-300); font-size: 11px; }
.crumb .cur { color: var(--fg-primary); font-weight: 500; }

/* Page header */
.page-hd { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; min-height: 44px; }
.page-hd-l { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; min-height: 32px; }
.page-hd h1 { margin: 0; font-size: 22px; font-weight: 700; letter-spacing: -0.02em; color: var(--fg-primary); }
.page-hd-count { font-size: 13px; color: var(--fg-secondary); }
.page-hd-count b { color: var(--fg-primary); font-weight: 700; font-variant-numeric: tabular-nums; }
.page-hd-r { display: flex; gap: 8px; align-items: center; }

.btn-excel { display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 12px; border-radius: 6px; border: 1px solid var(--border); background: #fff; font-size: 12.5px; font-weight: 500; color: var(--fg-primary); cursor: pointer; font-family: inherit; }
.btn-excel:hover { background: var(--color-bg-sunken); }
.btn-excel i { width: 14px; height: 14px; color: var(--success); }

/* Filters card */
.filters {
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  padding: 14px 16px; margin-bottom: 12px;
}
.filter-row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.filter-row + .filter-row { margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border); }

.f-label { font-size: 12px; color: var(--fg-secondary); font-weight: 500; padding-right: 4px; }
.f-select, .f-input, .f-date {
  height: 34px; padding: 0 10px; border: 1px solid var(--border); border-radius: 6px;
  font-family: inherit; font-size: 13px; color: var(--fg-primary); background: #fff;
}
.f-select { padding-right: 28px; appearance: none; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>"); background-repeat: no-repeat; background-position: right 8px center; }
.f-input { width: 200px; }
.f-date { width: 140px; font-variant-numeric: tabular-nums; }
.f-input:focus, .f-select:focus, .f-date:focus { outline: none; border-color: var(--accent); box-shadow: var(--shadow-focus); }
.f-dash { color: var(--fg-muted); font-size: 12px; }

.chk { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--fg-primary); cursor: pointer; user-select: none; }
.chk input { width: 14px; height: 14px; accent-color: var(--accent); margin: 0; }

.f-actions { margin-left: auto; display: flex; gap: 8px; }
.btn-search { height: 34px; padding: 0 18px; border-radius: 6px; background: var(--accent); color: #fff; border: 0; font-size: 13px; font-weight: 600; cursor: pointer; font-family: inherit; display: inline-flex; align-items: center; gap: 6px; }
.btn-search:hover { background: var(--accent-hover); }
.btn-search i { width: 14px; height: 14px; }

.btn-reset { height: 34px; padding: 0 12px; border-radius: 6px; background: #fff; border: 1px solid var(--border); color: var(--fg-secondary); font-size: 12.5px; cursor: pointer; font-family: inherit; display: inline-flex; align-items: center; gap: 4px; }
.btn-reset:hover { background: var(--color-bg-sunken); color: var(--fg-primary); }
.btn-reset i { width: 13px; height: 13px; }

/* Course chips (checkboxes) */
.course-chips {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 12px 14px;
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  margin-bottom: 12px;
}
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 28px; padding: 0 10px;
  border: 1px solid var(--border); border-radius: 999px;
  background: #fff; color: var(--fg-primary);
  font-size: 12px; font-weight: 500; cursor: pointer;
  font-family: inherit;
  transition: all var(--dur-base) var(--ease-out);
  white-space: nowrap;
}
.chip:hover { border-color: var(--color-text-disabled); background: var(--color-bg-sunken); }
.chip.on { background: var(--accent-soft); color: var(--color-text-link); border-color: var(--color-border-default); }
.chip.all { font-weight: 600; }
.chip.all.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.chip .count-mini { font-size: 10.5px; color: var(--fg-muted); font-variant-numeric: tabular-nums; }
.chip.on .count-mini { color: var(--color-text-link); }
.chip.all.on .count-mini { color: rgba(255,255,255,0.85); }

/* Status tabs (전체/수강중/미납/휴원/퇴원) */
.stat-tabs { display: flex; align-items: stretch; border-bottom: 1px solid var(--border); background: #fff; border-radius: 8px 8px 0 0; border: 1px solid var(--border); border-bottom: 0; padding: 0 4px; }
.stat-tab {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 18px; background: transparent; border: 0;
  font-size: 13.5px; font-weight: 500; color: var(--fg-secondary);
  cursor: pointer; font-family: inherit;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  position: relative;
}
.stat-tab:hover { color: var(--fg-primary); }
.stat-tab.on { color: var(--fg-primary); border-bottom-color: var(--accent); font-weight: 600; }
.stat-tab .pill {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 20px; height: 18px; padding: 0 6px;
  background: var(--color-border-subtle); color: var(--slate-600);
  border-radius: 999px; font-size: 11px; font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.stat-tab.on .pill { background: var(--accent-soft); color: var(--color-text-link); }
.stat-tab.on.danger .pill { background: var(--danger-50); color: var(--danger-700); }
.stat-tab.on.warn .pill { background: var(--warning-50); color: var(--warning-700); }
.stat-tab.on.neutral .pill { background: var(--color-border-default); color: var(--color-text-secondary); }

/* hotfix15 + Part C.2.5 TASK 6-D: 미배정 탭 (count>0 일 때만 노출, 빨강 강조) */
.stat-tab.unassigned-tab {
  color: #B91C1C;
  position: relative;
}
.stat-tab.unassigned-tab.on {
  color: #991B1B;
  border-bottom-color: #DC2626;
}
.stat-tab.unassigned-tab .pill.unassigned-pill {
  background: #FEE2E2;
  color: #DC2626;
  font-weight: 700;
}
.stat-tab.unassigned-tab.on .pill.unassigned-pill {
  background: #FCA5A5;
  color: #fff;
}

/* 학생 행 미배정 배지 — 학생 이름 옆 작은 빨강 칩 */
.tbl .name-cell .unassigned-badge {
  display: inline-block;
  background: #FEE2E2;
  color: #B91C1C;
  font-size: 10.5px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
  cursor: pointer;
  border: 1px solid #FCA5A5;
  transition: background 0.12s ease, border-color 0.12s ease;
  vertical-align: middle;
}
.tbl .name-cell .unassigned-badge:hover {
  background: #FCA5A5;
  color: #fff;
  border-color: #DC2626;
}

/* Table actions bar (selected count, bulk) */
.tbl-toolbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; background: #fff;
  border-left: 1px solid var(--border); border-right: 1px solid var(--border);
  font-size: 12.5px; color: var(--fg-secondary);
}
.tbl-toolbar .selected { color: var(--accent); font-weight: 600; }
.tbl-toolbar .bulk { display: inline-flex; gap: 6px; margin-left: auto; }
.bulk-btn { height: 28px; padding: 0 10px; border-radius: 4px; border: 1px solid var(--border); background: #fff; font-size: 12px; color: var(--fg-primary); cursor: pointer; font-family: inherit; display: inline-flex; align-items: center; gap: 4px; }
.bulk-btn:hover { background: var(--color-border-subtle); }
.bulk-btn i { width: 12px; height: 12px; color: var(--fg-secondary); }
.bulk-btn.danger { color: var(--danger); border-color: var(--danger-100); }
.bulk-btn.danger:hover { background: var(--danger-50); }

/* Table wrapper */
.tbl-wrap {
  background: #fff; border: 1px solid var(--border);
  border-radius: 0 0 8px 8px;
  overflow: hidden;
}
.tbl-scroll {
  width: 100%;
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
}
.tbl-scroll::-webkit-scrollbar { height: 8px; }
.tbl-scroll::-webkit-scrollbar-track { background: var(--color-border-subtle); }
.tbl-scroll::-webkit-scrollbar-thumb { background: var(--slate-300); border-radius: 4px; }
.tbl-scroll::-webkit-scrollbar-thumb:hover { background: var(--color-text-disabled); }
.tbl {
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13px;
  width: 100%;
  min-width: 1400px;
  table-layout: fixed;
}
.tbl thead th {
  background: var(--color-bg-sunken);
  color: var(--fg-secondary); font-weight: 600;
  font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.04em;
  padding: 10px 12px; text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  position: sticky; top: 0; z-index: 3;
}

/* Sticky columns */
.tbl .sticky-l, .tbl .sticky-r { position: sticky; background: #fff; z-index: 2; }
.tbl thead th.sticky-l, .tbl thead th.sticky-r { background: var(--color-bg-sunken); z-index: 4; }

.tbl .sticky-l-1 { left: 0; }
.tbl .sticky-l-2 { left: 44px; }
.tbl .sticky-l-3 { left: 100px; }
.tbl .sticky-l-4 { left: 208px; }
.tbl .sticky-r-first { right: 80px; }
.tbl .sticky-r-last  { right: 0; }

/* Scroll shadows — only when center is actually scrollable */
.tbl .sticky-l-last::after {
  content: ''; position: absolute; top: 0; right: -8px; bottom: 0;
  width: 8px; pointer-events: none;
  background: linear-gradient(to right, rgba(15,23,42,0.08), transparent);
  opacity: 0; transition: opacity var(--dur-base);
}
.tbl .sticky-r-first::before {
  content: ''; position: absolute; top: 0; left: -8px; bottom: 0;
  width: 8px; pointer-events: none;
  background: linear-gradient(to left, rgba(15,23,42,0.08), transparent);
  opacity: 0; transition: opacity var(--dur-base);
}
.tbl-scroll.scroll-left  .sticky-l-last::after { opacity: 1; }
.tbl-scroll.scroll-right .sticky-r-first::before { opacity: 1; }

/* Row hover / selected must propagate to sticky cells too */
.tbl tbody tr:hover td.sticky-l,
.tbl tbody tr:hover td.sticky-r { background: var(--color-bg-sunken); }
.tbl tbody tr.is-selected td.sticky-l,
.tbl tbody tr.is-selected td.sticky-r { background: var(--accent-soft); }
.tbl tbody tr.is-selected:hover td.sticky-l,
.tbl tbody tr.is-selected:hover td.sticky-r { background: var(--color-brand-primary-subtle); }
.tbl thead th.num-col { text-align: right; }
.tbl thead th.center { text-align: center; }
.tbl tbody td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--divider);
  color: var(--fg-primary); vertical-align: middle;
  white-space: nowrap;
}
.tbl tbody tr { cursor: pointer; transition: background var(--dur-base); }
.tbl tbody tr:hover td { background: var(--color-bg-sunken); }
.tbl tbody tr.is-selected td { background: var(--accent-soft); }
.tbl tbody tr.is-selected:hover td { background: var(--color-brand-primary-subtle); }
.tbl tbody tr:last-child td { border-bottom: 0; }

/* Teacher cell (2-line) */
.t-cell { display: flex; flex-direction: column; line-height: 1.35; }
.t-cell.is-retired { opacity: 0.55; }
.t-name { font-weight: 600; color: var(--fg-primary); font-size: 13px; }
.t-id { font-family: var(--font-mono); color: var(--color-text-muted); font-size: 11.5px; margin-top: 1px; }

/* hotfix17.1: 담당강사 retired chip — 학생목록(.t-cell) + 학생상세(.ctx-cell) 공용. modals_v1_0426 rg-retired-tag 톤 정합 */
.t-retired-tag {
  display: inline-block;
  background: #F3F4F6;
  color: #6B7280;
  font-size: 10px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 3px;
  margin-left: 6px;
  vertical-align: middle;
}

/* PII toggle */
.pii-toggle { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; padding: 0 6px; height: 34px; }
.pii-toggle input { display: none; }
.pii-toggle .track { width: 30px; height: 18px; background: var(--slate-300); border-radius: 999px; position: relative; transition: background var(--dur-base); flex-shrink: 0; }
.pii-toggle .thumb { position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; background: #fff; border-radius: 50%; transition: left var(--dur-base); box-shadow: 0 1px 2px rgba(0,0,0,0.15); }
.pii-toggle input:checked + .track { background: var(--accent); }
.pii-toggle input:checked + .track .thumb { left: 14px; }
.pii-toggle .lbl { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--fg-primary); font-weight: 500; }
.pii-toggle .lbl i { width: 14px; height: 14px; color: var(--fg-secondary); }
.tbl td.num-col, .tbl th.num-col { text-align: right; }
.tbl td.center, .tbl th.center { text-align: center; }
.tbl .code { font-family: var(--font-mono); font-variant-numeric: tabular-nums; color: var(--fg-primary); font-size: 12.5px; }
.tbl .muted-code { font-family: var(--font-mono); color: var(--fg-secondary); font-size: 12.5px; }
.tbl .num { font-variant-numeric: tabular-nums; }
.tbl input[type=checkbox] { width: 14px; height: 14px; accent-color: var(--accent); margin: 0; vertical-align: middle; }
.tbl .name-cell { font-weight: 500; color: var(--fg-primary); }
.tbl .sub-inline { color: var(--fg-secondary); font-size: 12px; margin-left: 4px; }

.action-btn {
  height: 26px; padding: 0 10px;
  border-radius: 4px; border: 1px solid var(--color-border-default);
  background: var(--accent-soft); color: var(--color-text-link);
  font-size: 11.5px; font-weight: 600; cursor: pointer;
  font-family: inherit;
}
.action-btn:hover { background: var(--color-brand-primary-subtle); border-color: var(--color-brand-primary); }
.action-btn.edit {
  background: #fff; color: var(--fg-primary); border-color: var(--border);
}
.action-btn.edit:hover { background: var(--color-border-subtle); border-color: var(--slate-300); }

/* hotfix6 #7: 상세 버튼 중앙 정렬 — inline-flex 로 vertical centering */
.action-btn.btn-detail,
a.action-btn.btn-detail {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 28px;
  padding: 0 12px;
  line-height: 1;
  text-decoration: none;
}

/* hotfix6 #5: row 전체 클릭 → 상세 이동. 호버 cursor·배경은 기존 유지 */
.tbl tbody tr.student-row { cursor: pointer; }
.tbl tbody tr.student-row:hover td {
  background: var(--color-bg-subtle);
}
/* sticky cells 의 배경은 tr 의 background 가 안 먹히므로 개별 지정 */
.tbl tbody tr.student-row:hover .sticky-l,
.tbl tbody tr.student-row:hover .sticky-r {
  background: var(--color-bg-subtle);
}
.tbl tbody tr.student-row:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

/* hotfix6 #6: 체크박스 cell — 패딩 확대로 터치 target 확보 + 호버 구분 */
.tbl tbody td.checkbox-cell {
  padding: 12px 12px;
  cursor: pointer;
}
.tbl tbody td.checkbox-cell input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}
.tbl tbody tr.student-row:hover td.checkbox-cell {
  background: var(--color-border-subtle);   /* row 호버보다 약간 더 강조 */
}

/* Pagination */
.tbl-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: #fff;
  border: 1px solid var(--border); border-top: 0;
  border-radius: 0 0 8px 8px;
  font-size: 12.5px; color: var(--fg-secondary);
  flex-wrap: wrap; gap: 10px;
}
.per-page { display: inline-flex; align-items: center; gap: 8px; }
.per-page .f-select { height: 28px; font-size: 12px; padding: 0 26px 0 10px; }

.pager { display: inline-flex; gap: 4px; }
.pg {
  min-width: 30px; height: 30px; padding: 0 8px;
  border: 1px solid var(--border); background: #fff;
  border-radius: 6px; font-size: 12.5px;
  color: var(--fg-primary); cursor: pointer;
  font-variant-numeric: tabular-nums;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: inherit;
}
.pg:hover:not(:disabled) { background: var(--color-bg-sunken); border-color: var(--slate-300); }
.pg.on { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }
.pg:disabled { opacity: 0.4; cursor: not-allowed; }
.pg i { width: 14px; height: 14px; }

.pager-info { color: var(--fg-secondary); font-size: 12px; }

/* Masked text */
.masked { letter-spacing: 0.02em; }

/* Student code → student portal link (StudentsList.jsx 학생코드 셀) */
.student-code-link {
  color: var(--color-brand-primary-hover);
  text-decoration: none;
  font-family: inherit;
  cursor: pointer;
  transition: color var(--dur-base) var(--ease-out);
}
.student-code-link:hover { color: var(--color-text-link); text-decoration: underline; }

/* Part 1.5 + hotfix v5 §5.9: 학생 상태 pill (영문 enum 그대로 CSS class).
   클래스 suffix = students.status 값 (active / unpaid / on_leave / left). */
.status-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.5;
  white-space: nowrap;
}
.status-pill.pill-active   { background: var(--color-bg-brand-subtle, #e3f3f3); color: var(--color-brand-primary, #0E9594); }
.status-pill.pill-unpaid   { background: var(--color-bg-danger-subtle, #fee2e2); color: var(--color-action-danger, #dc2626); }
.status-pill.pill-on_leave { background: var(--color-bg-warn-subtle, #fef3c7); color: var(--color-action-warn, #d97706); }
.status-pill.pill-left     { background: var(--color-bg-sunken, #f1f5f9); color: var(--color-text-muted, #64748b); }