:root {
  --canvas: #f3f6fa;
  --surface: #fff;
  --surface-soft: #f8faff;
  --line: #e5eaf1;
  --text: #182334;
  --muted: #768397;
  --blue: #2e5bff;
  --blue-dark: #2346d4;
  --blue-soft: #edf2ff;
  --green: #198754;
  --green-soft: #e8f7ef;
  --orange: #c77811;
  --orange-soft: #fff5e5;
  --shadow: 0 8px 24px rgba(35, 54, 86, .07);
  --radius: 10px;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--canvas);
}

* { box-sizing: border-box; }
body { margin: 0; min-width: 768px; background: var(--canvas); }
.auth-pending { visibility: hidden; }
[data-role="teacher"] .nav-item[data-page="students"],
[data-role="teacher"] .nav-item[data-page="teachers"],
[data-role="teacher"] .nav-item[data-page="classes"],
[data-role="teacher"] .nav-item[data-page="school"] { display: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }

.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: 232px; flex: 0 0 232px; display: flex; flex-direction: column; background: #fff; border-right: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; padding: 21px 20px 18px; border-bottom: 1px solid var(--line); }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 9px; color: #fff; font-size: 18px; font-weight: 700; background: linear-gradient(135deg, #4d72ff, #2748d6); box-shadow: 0 4px 9px rgba(46, 91, 255, .25); }
.brand strong { display: block; font-size: 15px; letter-spacing: .02em; }
.brand span { display: block; margin-top: 2px; color: var(--muted); font-size: 11px; }
.workspace-switcher { display: flex; align-items: center; gap: 8px; margin: 16px 14px 9px; padding: 10px 11px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface-soft); color: #40516c; font-size: 12px; }
.workspace-switcher .school-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 4px var(--blue-soft); }
.workspace-switcher .chevron { margin-left: auto; color: #9ba6b6; }
.nav { padding: 4px 12px; }
.nav-label { margin: 14px 10px 7px; color: #a3adba; font-size: 11px; font-weight: 600; letter-spacing: .08em; }
.nav-label.secondary { margin-top: 23px; }
.nav-item { display: flex; align-items: center; gap: 11px; min-height: 40px; padding: 0 12px; margin: 3px 0; border-radius: 7px; color: #5a687c; font-size: 13px; text-decoration: none; transition: .15s ease; }
.nav-item:hover { color: var(--blue); background: var(--blue-soft); }
.nav-item.active { color: var(--blue); background: var(--blue-soft); font-weight: 600; }
.nav-icon { width: 18px; color: currentColor; font-size: 17px; text-align: center; }
.muted-nav { color: #91a0b2; }
.nav-lock { margin-left: auto; color: #b4becc; }
.sidebar-footer { display: flex; align-items: center; gap: 9px; margin-top: auto; padding: 15px 16px; border-top: 1px solid var(--line); }
.sidebar-footer strong { display: block; font-size: 12px; }
.sidebar-footer span { display: block; margin-top: 2px; color: var(--muted); font-size: 11px; }
.admin-avatar { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: #e5ebff; color: var(--blue); font-size: 12px; font-weight: 700; }
.admin-avatar.small { width: 25px; height: 25px; font-size: 11px; }
.logout-button { margin-left: auto; border: 0; background: transparent; color: #a0aabc; font-size: 18px; }
.main-area { min-width: 0; flex: 1; }
.topbar { height: 64px; display: flex; align-items: center; justify-content: space-between; padding: 0 34px; border-bottom: 1px solid var(--line); background: #fff; }
.breadcrumb { color: #9aa5b4; font-size: 12px; }
.breadcrumb b { margin: 0 9px; color: #c4cbd5; font-weight: 400; }
.breadcrumb strong { color: #425067; font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 11px; }
.topbar-icon { position: relative; width: 29px; height: 29px; border: 1px solid var(--line); border-radius: 7px; background: #fff; color: #718096; font-weight: 600; }
.topbar-icon i { position: absolute; top: 4px; right: 4px; width: 5px; height: 5px; border-radius: 50%; background: #ff5c63; }
.topbar-user { display: flex; align-items: center; gap: 7px; padding-left: 10px; border-left: 1px solid var(--line); color: #536177; font-size: 12px; }
.topbar-user .chevron { margin-left: 3px; color: #98a3b3; }
.content { max-width: 1480px; margin: 0 auto; padding: 30px 34px 48px; }
.page-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 25px; margin-bottom: 22px; }
.eyebrow { margin: 0 0 7px; color: #9aa7b7; font-size: 11px; letter-spacing: .04em; }
.page-header h1 { margin: 0; font-size: 25px; letter-spacing: -.02em; }
.page-description { max-width: 540px; margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.header-actions { display: flex; gap: 8px; }
.button { min-height: 34px; padding: 0 15px; border: 1px solid #d9e0ea; border-radius: 6px; background: #fff; color: #536177; font-size: 12px; transition: .15s ease; }
.button:hover { border-color: #9db2f9; color: var(--blue); background: var(--surface-soft); }
.button:disabled { cursor: not-allowed; border-color: #e5eaf1; color: #b3bdca; background: #f4f6f9; box-shadow: none; }
.button.primary { border-color: var(--blue); color: #fff; background: var(--blue); box-shadow: 0 4px 10px rgba(46, 91, 255, .18); }
.button.primary:hover { border-color: var(--blue-dark); background: var(--blue-dark); }
.button.primary-soft { border-color: #d7e0ff; color: var(--blue); background: var(--blue-soft); }
.link-button { padding: 0; border: 0; color: var(--blue); background: transparent; font-size: 12px; }
.stats-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 15px; margin-bottom: 19px; }
.stat-card { display: flex; flex-direction: column; gap: 8px; padding: 17px 19px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.stat-card span { color: var(--muted); font-size: 12px; }
.stat-card strong { color: #243452; font-size: 26px; line-height: 1; }
.stat-card small { color: #a1abb9; font-size: 11px; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.profile-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 16px; }
.profile-card { padding: 22px 24px; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 15px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.panel-heading h2 { margin: 0; font-size: 19px; }
.status-chip { display: inline-flex; align-items: center; min-height: 23px; padding: 0 8px; border-radius: 100px; font-size: 11px; white-space: nowrap; }
.status-chip.success { color: var(--green); background: var(--green-soft); }
.status-chip.warning { color: var(--orange); background: var(--orange-soft); }
.profile-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 32px; padding-top: 20px; }
.profile-grid div, .detail-grid div { display: flex; flex-direction: column; gap: 6px; }
.profile-grid span, .detail-grid span, .class-meta span { color: var(--muted); font-size: 11px; }
.profile-grid strong, .detail-grid strong, .class-meta strong { color: #34435b; font-size: 13px; font-weight: 600; }
.profile-grid .wide { grid-column: 1 / -1; }
.profile-aside { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 270px; padding: 22px; text-align: center; }
.school-mark { width: 78px; height: 78px; display: grid; place-items: center; margin-bottom: 16px; border-radius: 18px; color: #fff; background: linear-gradient(135deg, #486bff, #2e4de2); font-size: 28px; font-weight: 700; box-shadow: 0 12px 25px rgba(46, 91, 255, .2); }
.profile-aside h3 { margin: 0; font-size: 15px; }
.profile-aside p { margin: 7px 0 16px; color: var(--muted); font-size: 12px; }
.filter-bar { display: flex; align-items: center; gap: 9px; padding: 17px 19px; border-bottom: 1px solid var(--line); }
.search-box { position: relative; display: flex; align-items: center; min-width: 290px; flex: 1; max-width: 450px; }
.search-box span { position: absolute; left: 11px; color: #9da8b8; font-size: 18px; line-height: 1; }
.search-box input { width: 100%; height: 34px; padding: 0 11px 0 33px; border: 1px solid #d8e0ea; border-radius: 6px; outline: none; color: var(--text); font-size: 12px; }
.search-box input:focus, .field input:focus, .field select:focus { border-color: #9bb0ff; box-shadow: 0 0 0 3px rgba(46, 91, 255, .1); }
.filter-bar select { width: 105px; height: 34px; padding: 0 9px; border: 1px solid #d8e0ea; border-radius: 6px; background: #fff; color: #536177; font-size: 12px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 950px; }
th { padding: 12px 19px; border-bottom: 1px solid var(--line); background: #fbfcfe; color: #8c99ab; font-size: 11px; font-weight: 600; text-align: left; white-space: nowrap; }
td { padding: 13px 19px; border-bottom: 1px solid #edf0f5; color: #48566b; font-size: 12px; white-space: nowrap; }
tbody tr:hover { background: #fafbff; }
tbody tr:last-child td { border-bottom: 0; }
.muted { color: #a1adbb; }
.person-cell { display: flex; align-items: center; gap: 9px; }
.person-cell strong { display: block; color: #283750; font-size: 12px; font-weight: 600; }
.person-cell small { display: block; margin-top: 3px; color: #9da8b7; font-size: 10px; }
.avatar { width: 29px; height: 29px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; color: #4261ce; background: #e5ebff; font-size: 12px; font-weight: 700; }
.avatar.pink { color: #bf5685; background: #fde8f0; }
.avatar.green { color: #23856d; background: #e1f5ef; }
.row-actions { display: flex; gap: 5px; }
.audit-panel .filter-bar { flex-wrap: wrap; }
.audit-result-count { margin-left: auto; color: var(--muted); font-size: 12px; }
.audit-subline { display: block; margin-top: 3px; color: var(--muted); font-size: 10px; }
.audit-metadata { display: block; max-width: 360px; overflow: hidden; color: #65748b; font-family: Consolas, monospace; font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.audit-detail-json { max-height: 280px; margin: 8px 0 0; padding: 12px; overflow: auto; border: 1px solid var(--line); border-radius: 6px; background: #f8faff; color: #4c5e79; font: 12px/1.5 Consolas, monospace; white-space: pre-wrap; }
.icon-button { min-height: 26px; padding: 0 8px; border: 1px solid transparent; border-radius: 5px; background: transparent; color: #718097; font-size: 11px; }
.icon-button:hover { border-color: #d6e0ff; color: var(--blue); background: var(--blue-soft); }
.icon-button.accent { color: var(--blue); }
.table-footer { display: flex; justify-content: space-between; padding: 12px 19px; border-top: 1px solid var(--line); color: #98a4b5; font-size: 11px; }
.empty-state { padding: 32px; color: #a2adbb; text-align: center; }
.class-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 15px; }
.class-card { padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.class-card-top { display: flex; align-items: center; justify-content: space-between; }
.class-badge { display: inline-flex; align-items: center; min-height: 23px; padding: 0 8px; border-radius: 5px; color: var(--blue); background: var(--blue-soft); font-size: 11px; }
.class-card h3 { margin: 13px 0 5px; font-size: 18px; }
.class-card > p { margin: 0; color: var(--muted); font-size: 12px; }
.class-meta { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 11px; margin-top: 20px; padding-top: 17px; border-top: 1px solid var(--line); }
.class-meta div { display: flex; flex-direction: column; gap: 5px; }
.class-actions { display: flex; gap: 8px; margin-top: 18px; }
.class-actions .button { flex: 1; }

#modal-root, [data-modal-root] { position: relative; }
.modal-backdrop { position: fixed; z-index: 20; inset: 0; display: grid; place-items: center; padding: 24px; background: rgba(17, 29, 49, .44); backdrop-filter: blur(2px); }
.modal { width: min(620px, 100%); max-height: calc(100vh - 48px); overflow-y: auto; border-radius: 12px; background: #fff; box-shadow: 0 24px 70px rgba(24, 39, 68, .22); }
.modal-wide { width: min(940px, 100%); }
.modal-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; padding: 22px 26px 17px; border-bottom: 1px solid var(--line); }
.modal-header h2 { margin: 0; font-size: 18px; }
.close-button { width: 28px; height: 28px; border: 0; border-radius: 5px; background: transparent; color: #94a0af; font-size: 22px; line-height: 1; }
.close-button:hover { color: var(--text); background: #f1f4f8; }
.modal form { padding: 0 26px 22px; }
.form-section { padding: 21px 0 3px; }
.form-section + .form-section { border-top: 1px solid var(--line); }
.section-title { position: relative; margin-bottom: 16px; padding-left: 12px; color: #33425b; font-size: 13px; font-weight: 600; }
.section-title::before { position: absolute; top: -2px; bottom: -2px; left: 0; width: 3px; border-radius: 3px; background: var(--blue); content: ""; }
.inline-title { display: flex; align-items: center; justify-content: space-between; }
.form-grid { display: grid; gap: 14px 18px; }
.form-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.field { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.field > span { color: #5a687d; font-size: 11px; }
.field i { margin-right: 3px; color: #e14a54; font-style: normal; }
.field input, .field select { width: 100%; height: 35px; padding: 0 10px; border: 1px solid #d5dde8; border-radius: 6px; outline: none; background: #fff; color: #34435b; font-size: 12px; }
.field select { padding-right: 26px; }
.field select[multiple] { height: auto; min-height: 120px; padding: 7px 10px; }
.form-hint { margin: 10px 0 0; color: var(--muted); font-size: 11px; line-height: 1.6; }
.subsection-label { margin: 16px 0 9px; color: #8390a3; font-size: 11px; font-weight: 600; }
.form-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.profile-upload-row { display: flex; justify-content: flex-end; margin-top: 16px; }
.avatar-field { display: flex; align-items: center; gap: 12px; }
.field-caption { color: #5a687d; font-size: 11px; }
.upload-box { position: relative; display: flex; align-items: center; gap: 7px; min-width: 170px; min-height: 45px; padding: 7px 11px; border: 1px dashed #c9d4e3; border-radius: 7px; background: #fbfcff; color: #5a687d; cursor: pointer; }
.upload-box:hover { border-color: #91a8ff; background: #f5f7ff; }
.upload-box strong { color: #42516a; font-size: 11px; font-weight: 600; }
.upload-box small { color: #a0acbb; font-size: 9px; }
.upload-box input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }
.upload-plus { color: var(--blue); font-size: 21px; line-height: 1; }
.form-error { min-height: 18px; margin: 13px 0 0; color: #d54f58; font-size: 11px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 9px; margin-top: 13px; padding-top: 17px; border-top: 1px solid var(--line); }
.position-row { position: relative; display: grid; grid-template-columns: 1.1fr 1fr 1fr 1fr auto; align-items: end; gap: 10px; margin-bottom: 12px; padding: 12px; border: 1px solid #e7ebf2; border-radius: 7px; background: #fafbfe; }
.position-row .field > span { font-size: 10px; }
.remove-position { height: 30px; padding: 0 7px; border: 0; color: #b5505a; background: transparent; font-size: 11px; }
.assignment-list { margin-top: 15px; }
.assignment-row { display: grid; grid-template-columns: 1fr 1.35fr auto; align-items: end; gap: 10px; margin-bottom: 9px; padding: 11px 12px; border: 1px solid #e7ebf2; border-radius: 7px; background: #fafbfe; }
.remove-assignment { height: 30px; border: 0; color: #b5505a; background: transparent; font-size: 11px; }
.add-assignment-button { margin-top: 1px; }
.assignment-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 15px; }
.assignment-tags span { padding: 5px 8px; border-radius: 5px; color: var(--blue); background: var(--blue-soft); font-size: 10px; }
.roster-actions { display: flex; align-items: center; gap: 9px; }
.transfer-target-teacher { display: inline-flex; align-items: center; min-height: 35px; color: #34435b; font-size: 12px; font-weight: 600; }
.roster-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }
.roster-item { display: flex; align-items: center; gap: 8px; padding: 9px 10px; border: 1px solid #e8ecf2; border-radius: 6px; background: #fbfcff; }
.roster-item span { color: #33425b; font-size: 12px; }
.roster-item small { color: #99a5b4; font-size: 10px; }
.remove-student { margin-left: auto; border: 0; color: #b1bbc8; background: transparent; font-size: 18px; line-height: 1; }
.remove-student:hover { color: #d54f58; }
.selector-toolbar { display: flex; align-items: center; gap: 14px; padding: 17px 26px; border-bottom: 1px solid var(--line); }
.selector-toolbar .search-box { max-width: 350px; }
.selector-count { color: #7d8a9c; font-size: 11px; }
.selector-table { max-height: 390px; }
.selector-table table { min-width: 700px; }
.selector-table th, .selector-table td { padding-left: 15px; padding-right: 15px; }
.selector-table input[type="checkbox"] { accent-color: var(--blue); }
.transfer-summary { padding: 20px 26px 0; }
.transfer-person { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid #e3e8f1; border-radius: 8px; background: var(--surface-soft); }
.transfer-person strong, .transfer-person span { display: block; }
.transfer-person strong { color: #2d3e5c; font-size: 14px; }
.transfer-person span { margin-top: 4px; color: #7d8a9c; font-size: 11px; }
.detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 19px 30px; padding: 24px 26px 27px; }
.toast { position: fixed; z-index: 40; right: 25px; bottom: 25px; min-width: 210px; padding: 12px 16px; border-radius: 7px; color: #fff; box-shadow: 0 10px 25px rgba(25, 43, 75, .2); font-size: 12px; }
.toast.success { background: #278d68; }
.toast.warning { background: #bc7718; }

@media (max-width: 1050px) {
  .sidebar { width: 204px; flex-basis: 204px; }
  .content { padding-left: 23px; padding-right: 23px; }
  .topbar { padding: 0 23px; }
  .profile-layout { grid-template-columns: minmax(0, 1fr); }
  .profile-aside { min-height: 160px; flex-direction: row; gap: 16px; justify-content: flex-start; text-align: left; }
  .profile-aside .school-mark { width: 58px; height: 58px; margin: 0; font-size: 20px; }
  .profile-aside .link-button { margin-left: auto; }
}

@media (max-width: 860px) {
  .sidebar { width: 68px; flex-basis: 68px; }
  .brand { justify-content: center; padding-left: 10px; padding-right: 10px; }
  .brand > div:not(.brand-mark), .workspace-switcher span:not(.school-dot), .workspace-switcher .chevron, .nav-label, .nav-item > span:not(.nav-icon), .nav-lock, .sidebar-footer > div:not(.admin-avatar), .logout-button { display: none; }
  .workspace-switcher { justify-content: center; margin: 14px 10px 8px; padding: 10px; }
  .nav { padding: 4px 9px; }
  .nav-item { justify-content: center; padding: 0; }
  .sidebar-footer { justify-content: center; padding: 13px 8px; }
  .topbar { padding: 0 16px; }
  .content { padding: 23px 16px 38px; }
  .page-header { align-items: flex-start; flex-direction: column; gap: 13px; }
  .header-actions { width: 100%; }
  .header-actions .button { width: 100%; }
  .stats-grid { gap: 9px; }
  .stat-card { padding: 13px; }
  .stat-card strong { font-size: 21px; }
  .class-grid { grid-template-columns: 1fr; }
  .form-grid-3, .form-grid-4, .form-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .position-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .assignment-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .position-row .remove-position { justify-self: start; }
  .roster-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  body { min-width: 0; }
  .topbar-user > span:not(.admin-avatar) { display: none; }
  .stats-grid { grid-template-columns: 1fr; }
  .filter-bar { align-items: stretch; flex-wrap: wrap; }
  .search-box { min-width: 100%; max-width: none; }
  .filter-bar select { flex: 1; }
  .form-grid-3, .form-grid-4, .form-grid-2 { grid-template-columns: 1fr; }
  .modal-backdrop { padding: 10px; }
  .modal { max-height: calc(100vh - 20px); }
  .modal-header, .modal form, .selector-toolbar { padding-left: 17px; padding-right: 17px; }
  .selector-toolbar { align-items: stretch; flex-direction: column; }
  .selector-toolbar .search-box { max-width: none; }
  .detail-grid { grid-template-columns: 1fr; padding-left: 17px; padding-right: 17px; }
  .roster-grid { grid-template-columns: 1fr; }
  .roster-actions { align-items: flex-start; flex-wrap: wrap; }
}

.module-panel { overflow: hidden; }
.module-filter-bar { display: grid; align-items: end; gap: 12px; padding: 16px 19px; }
.prep-filter-bar { grid-template-columns: 1.25fr 1.25fr 1fr 1fr auto auto; }
.lesson-filter-bar { grid-template-columns: 1.15fr 1.15fr .95fr .85fr .85fr 1fr 1.65fr auto auto; }
.field-inline { display: flex; flex-direction: column; gap: 7px; min-width: 0; }
.field-inline > span:first-child { color: #5a687d; font-size: 11px; white-space: nowrap; }
.field-inline input, .field-inline select { width: 100%; height: 34px; min-width: 0; padding: 0 9px; border: 1px solid #d5dde8; border-radius: 6px; outline: none; background: #fff; color: #34435b; font-size: 12px; }
.field-inline input:focus, .field-inline select:focus { border-color: #9bb0ff; box-shadow: 0 0 0 3px rgba(46, 91, 255, .1); }
.date-range-inputs { display: flex; align-items: center; gap: 5px; }
.date-range-inputs input { min-width: 0; }
.date-range-inputs em { color: #a0abb9; font-size: 11px; font-style: normal; }
.module-table table { min-width: 1080px; }
.lesson-prep-table table { min-width: 1100px; }
.module-table th, .module-table td { padding-left: 15px; padding-right: 15px; }
.lesson-prep-table th, .lesson-prep-table td { padding-left: 8px; padding-right: 8px; }
.module-table td strong { color: #2f405b; font-size: 12px; font-weight: 600; }
.table-link { padding: 0 2px; border: 0; color: var(--blue); background: transparent; font-size: 11px; }
.table-link:hover { color: var(--blue-dark); text-decoration: underline; }
.checkbox-cell { width: 36px; text-align: center; }
.checkbox-cell input, [data-lesson-prep-id], [data-prep-member] { accent-color: var(--blue); }
.batch-toolbar { display: flex; align-items: center; justify-content: space-between; min-height: 42px; padding: 0 19px; border-bottom: 1px solid var(--line); color: #8d99aa; font-size: 11px; }
.batch-toolbar strong { color: var(--blue); }
.quality-badge { display: inline-flex; min-width: 28px; justify-content: center; color: #8995a6; font-size: 11px; }
.quality-badge.excellent { color: var(--green); font-weight: 600; }
.module-pagination { align-items: center; }
.pagination-controls { display: inline-flex; align-items: center; gap: 5px; }
.page-button { min-width: 26px; height: 26px; padding: 0 7px; border: 1px solid #dce2ea; border-radius: 4px; background: #fff; color: #67758a; font-size: 11px; }
.page-button:hover, .page-button.active { border-color: var(--blue); color: var(--blue); background: var(--blue-soft); }
.page-button:disabled { cursor: not-allowed; color: #b5beca; background: #f8f9fb; }
.field-hint { margin: 11px 0 0; color: #9aa6b5; font-size: 11px; }
.textarea-field { margin-top: 15px; }
.field textarea { width: 100%; padding: 10px; border: 1px solid #d5dde8; border-radius: 6px; outline: none; resize: vertical; color: #34435b; font-size: 12px; line-height: 1.6; }
.field textarea:focus { border-color: #9bb0ff; box-shadow: 0 0 0 3px rgba(46, 91, 255, .1); }
.member-check-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; padding: 20px 0; }
.member-check { display: flex; align-items: center; gap: 8px; min-height: 35px; padding: 0 10px; border: 1px solid #e4e9f1; border-radius: 6px; color: #506078; font-size: 12px; }
.member-check:has(input:checked) { border-color: #b7c6ff; background: var(--blue-soft); color: var(--blue); }
.detail-grid .wide { grid-column: 1 / -1; }
.detail-content { white-space: pre-wrap; line-height: 1.7; }
.courseware-field { margin-top: 17px; padding-top: 16px; border-top: 1px solid var(--line); }
.courseware-field-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 9px; }
.courseware-field-heading > span { color: #5a687d; font-size: 11px; }
.courseware-field-heading small { color: #9aa6b5; font-size: 10px; }
.courseware-upload-row { display: flex; align-items: center; gap: 10px; }
.courseware-upload-box { flex: 1; min-height: 54px; border-style: solid; }
.courseware-upload-box > span:not(.upload-plus) { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.courseware-upload-box strong, .courseware-upload-box small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.courseware-upload-box small { color: #9aa6b5; font-size: 10px; }
.courseware-upload-row > .button { flex: 0 0 auto; }

@media (max-width: 1100px) {
  .prep-filter-bar, .lesson-filter-bar { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .module-filter-bar .button { align-self: end; }
}

@media (max-width: 768px) {
  .prep-filter-bar, .lesson-filter-bar { grid-template-columns: 1fr; }
  .date-range-inputs { width: 100%; }
  .member-check-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .module-pagination { align-items: flex-start; flex-direction: column; gap: 10px; }
  .courseware-field-heading { align-items: flex-start; flex-direction: column; gap: 4px; }
  .courseware-upload-row { align-items: stretch; flex-direction: column; }
}

.status-chip.info { color: var(--blue); background: var(--blue-soft); }
.collaboration-panel { overflow: hidden; }
.collab-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 20px 21px 17px; }
.collab-stats .stat-card { min-height: 112px; justify-content: center; border-radius: 7px; background: #fbfcfe; box-shadow: none; }
.collab-stats .stat-card strong { color: #25769c; }
.collab-toolbar { display: flex; align-items: center; gap: 12px; min-height: 58px; padding: 10px 21px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.collab-toolbar select { min-width: 130px; height: 34px; padding: 0 10px; border: 1px solid #d8e0ea; border-radius: 6px; background: #fff; color: #536177; font-size: 12px; }
.collab-search { position: relative; display: flex; align-items: center; width: min(360px, 100%); }
.collab-search span { position: absolute; left: 10px; color: #9da8b8; font-size: 16px; }
.collab-search input { width: 100%; height: 34px; padding: 0 10px 0 31px; border: 1px solid #d8e0ea; border-radius: 6px; outline: none; color: #40506a; font-size: 12px; }
.collab-search input:focus, .collab-toolbar select:focus { border-color: #9bb0ff; box-shadow: 0 0 0 3px rgba(46, 91, 255, .1); outline: none; }
.collab-card-grid { display: grid; grid-template-columns: repeat(3, minmax(270px, 1fr)); gap: 15px; min-height: 285px; padding: 18px 21px 22px; }
.collab-card { display: flex; flex-direction: column; min-height: 244px; padding: 17px; border: 1px solid #dde4ed; border-radius: 7px; background: #fff; }
.collab-card-top { display: flex; align-items: center; justify-content: space-between; }
.collab-card-top time { color: #738097; font-size: 11px; font-weight: 600; }
.collab-card h3 { margin: 14px 0 6px; color: #26364f; font-size: 16px; }
.collab-card > p { margin: 0; color: #758297; font-size: 12px; }
.activity-progress { margin-top: auto; padding-top: 24px; }
.activity-progress > div:first-child { display: flex; align-items: center; justify-content: space-between; color: #758297; font-size: 11px; }
.activity-progress strong { color: #24344f; font-size: 12px; }
.progress-track { height: 6px; margin-top: 9px; overflow: hidden; border-radius: 6px; background: #e9edf4; }
.progress-track i { display: block; height: 100%; border-radius: inherit; background: #2e9d78; }
.collab-card-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 13px; padding-top: 13px; border-top: 1px solid #edf0f4; color: #7c899c; font-size: 11px; }
.collab-list { display: flex; flex-direction: column; gap: 11px; min-height: 240px; padding: 18px 21px 21px; }
.collab-list-card { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; align-items: center; gap: 13px; min-height: 106px; padding: 14px 16px; border: 1px solid #dde4ed; border-radius: 7px; background: #fff; }
.collab-list-icon { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 7px; color: #536cf0; background: #edf1ff; font-size: 19px; }
.collab-list-icon.green { color: #278f72; background: #eaf6f1; }
.category-tag { display: inline-flex; align-items: center; min-height: 22px; padding: 0 8px; border-radius: 4px; color: var(--blue); background: var(--blue-soft); font-size: 10px; }
.collab-list-main h3 { margin: 7px 0 5px; color: #28384f; font-size: 14px; }
.collab-list-main p { margin: 0; color: #7d899b; font-size: 11px; }
.collab-list-actions { display: flex; align-items: center; gap: 9px; }
.check-field { display: flex; align-items: center; gap: 8px; margin-top: 17px; color: #58677d; font-size: 12px; }
.check-field input { accent-color: var(--blue); }
.record-summary { display: flex; justify-content: space-between; padding: 15px 26px; border-bottom: 1px solid var(--line); color: #7b889a; font-size: 11px; }
.record-summary strong { color: #32435f; }
.record-table { max-height: 430px; }
.record-table table { min-width: 760px; }
.dimension-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px 17px; margin-top: 17px; }
.dimension-detail-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; padding: 0 26px 20px; }
.dimension-detail-grid > div, .summary-box { padding: 12px 14px; border: 1px solid #e5e9f0; border-radius: 6px; background: #fbfcfe; }
.dimension-detail-grid span, .summary-box span { color: #8793a4; font-size: 10px; font-weight: 600; }
.dimension-detail-grid p, .summary-box p { margin: 7px 0 0; color: #42516a; font-size: 12px; line-height: 1.65; }
.summary-box { margin: 0 26px 13px; }
.consultation-entry-records { margin: 0 26px 13px; padding-top: 4px; }
.detail-section-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 9px; color: #42516a; font-size: 12px; }
.detail-section-heading span { color: #8793a4; font-size: 10px; font-weight: 400; }
.consultation-entry-record { padding: 11px 12px; margin-bottom: 8px; border: 1px solid #e5e9f0; border-radius: 6px; background: #fbfcfe; }
.consultation-entry-record-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.consultation-entry-record-heading strong { color: #32435f; font-size: 12px; }
.consultation-entry-record-heading span, .consultation-entry-record small { color: #8793a4; font-size: 10px; }
.consultation-entry-record p { margin: 7px 0; color: #42516a; font-size: 12px; line-height: 1.6; white-space: pre-wrap; }
.consultation-entry-empty { min-height: 100px; margin: 0 26px 13px; border: 1px dashed #d7dee8; border-radius: 6px; }
.review-warning { margin: 0 26px 13px; padding: 10px 12px; border: 1px solid #f0d9a7; border-radius: 6px; color: #9a6700; background: #fff8e8; font-size: 11px; }
.detail-actions { margin: 17px 26px 24px; }
.content-block-editor { margin-top: 17px; }
.content-block-editor-heading { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 9px; }
.content-block-editor-heading > span { color: #59687d; font-size: 12px; font-weight: 600; }
.content-block-editor-heading small { color: #98a2b1; font-size: 10px; }
.content-block { position: relative; padding: 11px; margin-bottom: 9px; border: 1px solid #e1e6ee; border-radius: 6px; background: #fbfcfe; }
.content-block-label { display: flex; align-items: center; justify-content: space-between; margin-bottom: 7px; color: #6d7b8e; font-size: 11px; font-weight: 600; }
.content-block textarea { width: 100%; min-height: 76px; resize: vertical; }
.content-block-actions { display: flex; gap: 14px; }
.content-image-upload { display: flex; align-items: center; justify-content: center; min-height: 74px; border: 1px dashed #c9d2df; border-radius: 5px; color: #6c7b90; background: #fff; cursor: pointer; }
.content-image-upload input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.content-image-placeholder { max-width: 100%; padding: 0 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 11px; }
.icon-button { width: 24px; height: 24px; padding: 0; border: 0; color: #738197; background: transparent; cursor: pointer; }
.icon-button:hover { color: #3d5bf3; }

@media (max-width: 1100px) {
  .collab-card-grid { grid-template-columns: repeat(2, minmax(250px, 1fr)); }
}

@media (max-width: 768px) {
  .collab-stats, .collab-card-grid, .dimension-grid, .dimension-detail-grid { grid-template-columns: 1fr; }
  .collab-toolbar { align-items: stretch; flex-direction: column; }
  .collab-toolbar select, .collab-search { width: 100%; }
  .collab-list-card { grid-template-columns: 42px minmax(0, 1fr); }
  .collab-list-actions { grid-column: 1 / -1; justify-content: flex-end; }
  .record-summary { flex-direction: column; gap: 5px; }
}