@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;650;700;750;800&display=swap');
:root {
  --bg: #d5dbdc;
  --surface: #ecebe5;
  color-scheme: light;
  --text: #303a43;
  --muted: #58636a;
  --line: #b6c0c1;
  --blue: #526b78;
  --blue-soft: #d8e1e2;
  --purple-soft: #e2ddea;
  --green-soft: #dce6dd;
  --orange-soft: #ece0d2;
  --radius: 18px;
  --surface-muted: #e1e3dc;
  --text-secondary: #4d5c64;
  --topbar-surface: rgba(236, 235, 229, 0.97);
  --blue-ink: #405f6e;
  --green-ink: #26704c;
  --orange-ink: #87501e;
  --purple-ink: #7150a0;
  --danger-ink: #ad3838;
  --danger-soft: #fcebea;
}
:root[data-theme='dark'] {
  color-scheme: dark;
  --bg: #10151f;
  --surface: #191f2d;
  --surface-muted: #222b3b;
  --topbar-surface: rgba(25, 31, 45, 0.96);
  --text: #e9edf5;
  --muted: #a7b3c7;
  --text-secondary: #b6c2d6;
  --line: #303b4e;
  --accent-border: #7599f2;
  --blue: #829dff;
  --blue-soft: #263454;
  --blue-ink: #b0c5ff;
  --purple-soft: #352b49;
  --purple-ink: #c9b2ef;
  --green-soft: #203c35;
  --green-ink: #94d8b7;
  --orange-soft: #423326;
  --orange-ink: #edbf8c;
  --danger-soft: #442b31;
  --danger-ink: #f1a2a2;
}
:root[data-theme='dark'] .button.primary,
:root[data-theme='dark'] .brand-mark {
  background: #506bdd;
  color: #fff;
}
:root[data-theme='dark'] .button.primary:hover {
  background: var(--accent-start);
}
.theme-toggle {
  flex-shrink: 0;
}
* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  min-height: 100%;
  font-family: 'Nunito', Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 14px;
}
button,
input,
textarea,
select {
  font: inherit;
}
button,
a,
input,
textarea,
select {
  -webkit-tap-highlight-color: transparent;
}
button {
  cursor: pointer;
}
button:disabled {
  cursor: wait;
  opacity: 0.6;
}
button {
  color: inherit;
}
a {
  color: var(--blue);
  text-decoration: none;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1 {
  font-size: 30px;
  letter-spacing: -1.1px;
  font-weight: 800;
  line-height: 1.35;
}
h2 {
  font-size: 16px;
  font-weight: 750;
  letter-spacing: -0.3px;
}
h3 {
  font-size: 15px;
  font-weight: 750;
}
p {
  line-height: 1.7;
}
svg {
  flex-shrink: 0;
}
button {
  border: 0;
  background: none;
}
small {
  font-size: 12px;
}
.subtle {
  color: var(--muted);
  font-size: 12px;
}
.block {
  display: block;
}
.blue {
  background: var(--blue-soft);
  color: var(--blue-ink, #4563d3);
}
.purple,
.lavender {
  background: var(--purple-soft);
  color: var(--purple-ink, #8c67c5);
}
.green {
  background: var(--green-soft);
  color: var(--green-ink, #348566);
}
.orange {
  background: var(--orange-soft);
  color: var(--orange-ink, #b87136);
}
.late-text,
.danger-text {
  color: var(--danger-ink, #bc4b49) !important;
}
.success-text {
  color: var(--green-ink, #28775a) !important;
}
.eyebrow {
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 1.7px;
  color: var(--muted);
  text-transform: uppercase;
}
.app-shell {
  display: flex;
  min-height: 100vh;
}
.sidebar {
  position: fixed;
  width: 246px;
  top: 0;
  bottom: 0;
  background: var(--surface, #fff);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 29px 18px 18px;
  z-index: 20;
}
.brand {
  display: flex;
  align-items: center;
  font-size: 23px;
  font-weight: 800;
  letter-spacing: -0.9px;
  color: var(--blue-ink, #222d41);
  white-space: nowrap;
}
.brand > span:last-child {
  color: var(--blue);
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: white !important;
  font-weight: 800;
  font-size: 24px;
  width: 36px;
  height: 36px;
  border-radius: 11px;
  margin-right: 10px;
  position: relative;
  overflow: hidden;
}
.brand-mark:after {
  content: '';
  position: absolute;
  width: 16px;
  height: 6px;
  background: #9dafef;
  bottom: 7px;
  right: -2px;
  transform: rotate(-25deg);
  border-radius: 2px;
}
.workspace-switch {
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  margin: 34px 0 26px;
  padding: 10px 8px;
  gap: 8px;
}
.workspace-icon {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  background: var(--surface-muted, #f2f4f9);
  color: var(--text-secondary, #6a7792);
  border-radius: 7px;
}
.workspace-switch select {
  min-width: 0;
  width: 100%;
  appearance: none;
  border: 0;
  background: transparent;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary, #465169);
  padding: 0;
  cursor: pointer;
}
.sidebar-label {
  font-size: 9px;
  color: var(--text-secondary, #99a1b0);
  letter-spacing: 1.2px;
  margin: 0 13px 12px;
  font-weight: 750;
}
.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 13px;
  width: 100%;
  padding: 13px;
  border-radius: 9px;
  color: var(--text-secondary, #6d778b);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  min-height: 44px;
}
.nav-item:hover {
  background: var(--surface-muted, #f6f8fc);
}
.nav-item.selected {
  background: var(--blue-soft);
  color: var(--blue);
  font-weight: 750;
}
.nav-item.selected:before {
  content: '';
  width: 3px;
  height: 23px;
  background: var(--blue);
  position: absolute;
  left: 0;
  border-radius: 0 3px 3px 0;
}
.nav-item small {
  margin-left: auto;
  color: var(--blue);
  background: var(--surface-muted, #dfe6ff);
  padding: 2px 7px;
  border-radius: 5px;
  font-weight: 700;
}
.nav-secondary {
  margin-top: 22px;
}
.sidebar-bottom {
  margin-top: auto;
  padding-top: 24px;
}
.sidebar-tip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 16px;
  border-radius: 12px;
  background: var(--surface-muted, #f7f8fd);
  font-size: 11px;
  color: var(--text-secondary, #8791a3);
  line-height: 1.8;
}
.sidebar-tip strong {
  font-weight: 650;
  color: var(--text-secondary, #56637b);
}
.tip-star {
  font-size: 39px;
  color: var(--blue-ink, #91a3dd);
}
.new-workspace {
  display: flex;
  gap: 7px;
  color: var(--text-secondary, #8590a3);
  font-size: 11px;
  padding: 17px 7px;
  width: 100%;
}
.profile {
  display: flex;
  gap: 9px;
  align-items: center;
  border-top: 1px solid var(--line);
  padding-top: 17px;
}
.profile > span:nth-child(2) {
  flex: 1;
  min-width: 0;
}
.profile strong {
  display: block;
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}
.profile small {
  display: block;
  color: var(--text-secondary, #94a0b1);
  font-size: 10px;
  margin-top: 3px;
}
.profile a {
  color: var(--text-secondary, #91a0b4);
  display: grid;
  place-items: center;
  width: 25px;
  height: 35px;
}
.avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 750;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: var(--surface-muted, #edf1ff);
  color: var(--blue-ink, #5272c8);
}
.avatar.small {
  width: 32px;
  height: 32px;
  font-size: 10px;
}
.main-area {
  margin-left: 246px;
  flex: 1;
  min-width: 0;
}
.topbar {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 38px;
  background: var(--topbar-surface, rgba(255, 255, 255, 0.9));
  border-bottom: 1px solid var(--line);
  gap: 20px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 11px;
  color: var(--text-secondary, #9aa3b2);
}
.breadcrumb strong {
  font-weight: 600;
  color: var(--text-secondary, #6f7d94);
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 22px;
}
.demo-switch {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  background: var(--surface-muted, #f4f6fb);
  border-radius: 7px;
}
.demo-switch > span {
  font-size: 9px;
  color: var(--text-secondary, #8b95a6);
  text-transform: uppercase;
  letter-spacing: 0.7px;
}
.demo-switch select {
  border: 0;
  font-size: 11px;
  background: transparent;
  padding: 5px;
  max-width: 145px;
}
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  border-radius: 8px;
  color: var(--text-secondary, #7b869b);
  min-width: 36px;
  min-height: 36px;
}
.icon-button:hover {
  background: var(--surface-muted, #f0f3fa);
}
.notification-button {
  position: relative;
}
.notification-button i {
  position: absolute;
  width: 6px;
  height: 6px;
  background: #ed967e;
  border: 2px solid white;
  box-sizing: content-box;
  border-radius: 50%;
  top: 4px;
  right: 6px;
}
.mobile-menu {
  display: none;
}
.main-content {
  padding: 35px 38px 48px;
  max-width: 1570px;
  margin: auto;
  min-height: calc(100vh - 76px);
}
.page-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 28px;
}
.page-heading p {
  color: var(--muted);
  font-size: 12px;
  margin-top: 8px;
  max-width: 760px;
}
.page-heading .eyebrow {
  margin-bottom: 10px;
  font-size: 9px;
}
.greeting-dot {
  color: var(--blue-ink, #c2cee9);
  font-size: 29px;
  vertical-align: middle;
  margin-left: 7px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 17px;
  min-height: 44px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid transparent;
  transition:
    background 0.15s,
    transform 0.15s;
  white-space: nowrap;
}
.button:active {
  transform: translateY(1px);
}
.button.primary {
  background: var(--blue);
  color: white;
  box-shadow: 0 3px 6px #4263dd12;
}
.button.primary:hover {
  background: #3453c6;
}
.button.ghost {
  border-color: var(--line, #dfe5ef);
  background: var(--surface);
  color: var(--text-secondary, #5f6d83);
}
.button.ghost:hover {
  background: var(--surface-muted, #f7f9fd);
}
.button.white {
  background: var(--surface, #fff);
  color: var(--text-secondary, #56716a);
}
.button.danger {
  background: #c65a55;
  color: #fff;
}
.small-button {
  padding: 8px 12px;
  min-height: 35px;
  font-size: 11px;
}
.text-button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--blue);
  font-weight: 650;
  padding: 7px 0;
  min-height: 32px;
}
.text-button:hover {
  text-decoration: underline;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 17px;
  margin-bottom: 29px;
}
.stats-grid.three {
  grid-template-columns: repeat(3, 1fr);
}
.stat-card {
  background: var(--surface, #fff);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 19px 17px;
}
.stat-card > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.stat-card > div > span:first-child {
  font-size: 11px;
  color: var(--text-secondary, #7d889c);
  font-weight: 600;
}
.mini-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.stat-card > strong {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -1.3px;
  display: block;
  margin: 6px 0 5px;
}
.stat-card > small {
  font-size: 9px;
  color: var(--text-secondary, #98a1b0);
}
.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 295px;
  gap: 24px;
}
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}
.panel-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 22px 23px 18px;
}
.panel-heading h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.5;
}
.panel-heading p {
  font-size: 10px;
  color: var(--text-secondary, #98a1b0);
  margin-top: 4px;
}
.panel-heading > .subtle {
  font-size: 9px;
}
.next-panel {
  margin-top: 23px;
}
.lesson-list {
  padding-bottom: 8px;
}
.lesson-row {
  display: flex;
  align-items: center;
  gap: 17px;
  width: 100%;
  padding: 21px 23px;
  border-top: 1px solid var(--line, #f0f2f7);
  text-align: left;
}
.lesson-row:hover {
  background: var(--surface-muted, #fbfcff);
}
.lesson-time {
  display: flex;
  flex-direction: column;
  width: 46px;
  flex-shrink: 0;
  gap: 5px;
}
.lesson-time strong {
  font-size: 14px;
  letter-spacing: -0.4px;
}
.lesson-time span {
  font-size: 10px;
  color: var(--text-secondary, #9aa4b6);
}
.lesson-line {
  width: 3px;
  align-self: stretch;
  min-height: 34px;
  border-radius: 3px;
  flex-shrink: 0;
  background: #8ea4ea;
}
.lesson-line.purple {
  background: #c2a5e2;
}
.lesson-line.green {
  background: #83ba9e;
}
.lesson-line.orange {
  background: #e8b385;
}
.lesson-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.lesson-info strong {
  font-size: 12px;
  font-weight: 700;
}
.lesson-info span {
  font-size: 10px;
  color: var(--text-secondary, #96a0b0);
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.lesson-format {
  font-size: 10px;
  color: var(--text-secondary, #7e8da7);
  display: flex;
  gap: 6px;
  align-items: center;
  background: var(--surface-muted, #f8f9fc);
  border-radius: 5px;
  padding: 6px 8px;
}
.lesson-row > svg:last-child {
  color: var(--text-secondary, #a6afbf);
}
.muted {
  opacity: 0.65;
}
.upcoming-line {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 0 23px 17px;
}
.date-tile {
  width: 43px;
  background: var(--surface-muted, #f5f7fd);
  border-radius: 8px;
  text-align: center;
  padding: 7px 4px;
  color: var(--blue-ink, #7184ad);
  flex-shrink: 0;
}
.date-tile strong {
  display: block;
  font-size: 14px;
  color: var(--blue-ink, #526b9b);
}
.date-tile span {
  display: block;
  font-size: 9px;
}
.upcoming-line button {
  flex: 1;
  text-align: left;
  min-height: 44px;
}
.upcoming-line button strong {
  display: block;
  font-size: 11px;
  font-weight: 700;
}
.upcoming-line button span {
  display: block;
  font-size: 10px;
  color: var(--text-secondary, #94a0b1);
  margin-top: 5px;
}
.upcoming-line > svg {
  color: var(--text-secondary, #a5afc1);
}
.focus-card {
  background: var(--green-soft, #edf5f0);
  border: 1px solid var(--line, #e3eee8);
  border-radius: var(--radius);
  padding: 23px 25px;
  position: relative;
  overflow: hidden;
}
.focus-card > .eyebrow {
  color: var(--text-secondary, #7c9c8a);
  letter-spacing: 1.7px;
  font-size: 8px;
}
.focus-symbol {
  color: var(--green-ink, #85b89c);
  font-size: 76px;
  text-align: center;
  line-height: 1;
  margin: 10px 0 20px;
  position: relative;
}
.focus-symbol:before,
.focus-symbol:after {
  content: '✦';
  font-size: 18px;
  position: absolute;
  color: var(--text-secondary, #bad4c3);
  left: 45px;
  top: 5px;
}
.focus-symbol:after {
  left: auto;
  right: 35px;
  top: 42px;
  font-size: 13px;
}
.focus-card h2 {
  font-size: 18px;
  line-height: 1.5;
  color: var(--text-secondary, #416752);
  letter-spacing: -0.6px;
  margin-bottom: 10px;
}
.focus-card p {
  font-size: 10px;
  line-height: 1.9;
  color: var(--text-secondary, #7c9789);
  margin-bottom: 19px;
}
.focus-card .button {
  width: 100%;
  font-size: 10px;
  justify-content: space-between;
  border: 1px solid var(--line, #e7ede8);
  box-shadow: 0 2px 5px #41675206;
}
.attention-panel {
  margin-top: 22px;
}
.count-pill {
  font-size: 10px;
  background: var(--surface-muted, #f0f3fa);
  color: var(--blue-ink, #7f91b3);
  border-radius: 6px;
  min-width: 24px;
  text-align: center;
  padding: 4px;
}
.compact-assignment {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 16px 23px;
  border-top: 1px solid var(--line, #f1f3f8);
}
.compact-assignment:hover {
  background: var(--surface-muted, #fafbfe);
}
.compact-assignment > span:not(.mini-icon):not(.badge) {
  flex: 1;
  min-width: 0;
}
.compact-assignment strong {
  font-size: 11px;
  display: block;
  font-weight: 700;
}
.compact-assignment small {
  display: block;
  color: var(--text-secondary, #96a0b2);
  font-size: 9px;
  margin-top: 6px;
}
.compact-assignment > svg:last-child {
  color: var(--text-secondary, #a0aaba);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 23px;
  flex-wrap: wrap;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--line, #e3e8f2);
  border-radius: 9px;
  padding: 10px 13px;
  color: var(--text-secondary, #9aa5b8);
  width: 290px;
  min-height: 43px;
}
.search-box input {
  border: 0;
  background: transparent;
  outline: none;
  width: 100%;
  font-size: 11px;
  color: var(--text-secondary, #50607d);
}
.search-box input::placeholder {
  color: var(--text-secondary, #9da8bb);
}
.tabs {
  display: flex;
  background: var(--surface-muted, #eef1f7);
  padding: 4px;
  border-radius: 8px;
  gap: 2px;
}
.tabs button {
  font-size: 11px;
  font-weight: 600;
  padding: 9px 13px;
  color: var(--text-secondary, #8993a5);
  border-radius: 5px;
}
.tabs button.active {
  background: var(--surface);
  color: var(--text-secondary, #526683);
  box-shadow: 0 1px 4px #24365506;
}
.toolbar select,
.attendance-row select {
  border: 1px solid var(--line, #e1e6f0);
  background: var(--surface);
  border-radius: 8px;
  padding: 10px 12px;
  color: var(--text-secondary, #68788f);
  font-size: 11px;
  min-height: 40px;
}
.table-head,
.table-row {
  display: grid;
  gap: 20px;
  align-items: center;
  padding: 18px 23px;
}
.table-head {
  font-size: 10px;
  font-weight: 650;
  color: var(--text-secondary, #98a3b4);
  background: var(--surface-muted, #fbfcff);
  border-bottom: 1px solid var(--line);
}
.table-row {
  width: 100%;
  text-align: left;
  border-bottom: 1px solid var(--line, #f0f3f8);
  font-size: 11px;
  min-height: 80px;
}
.table-row:last-child {
  border-bottom: 0;
}
button.table-row:hover {
  background: var(--surface-muted, #fbfcff);
}
.student-table {
  grid-template-columns: minmax(210px, 1.7fr) minmax(140px, 1.5fr) 110px 85px 15px;
}
.person-cell {
  display: flex;
  align-items: center;
  gap: 12px;
}
.person-cell strong {
  font-size: 11px;
  font-weight: 700;
}
.person-cell small {
  display: block;
  font-size: 9px;
  color: var(--text-secondary, #98a4b6);
  margin-top: 5px;
}
.cell-groups {
  font-size: 10px;
  color: var(--text-secondary, #8391a5);
  line-height: 1.7;
}
.badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  font-size: 9px;
  font-weight: 650;
  padding: 5px 8px;
  border-radius: 5px;
  background: var(--surface-muted, #f2f4f8);
  color: var(--text-secondary, #91a0b3);
  white-space: nowrap;
}
.badge.scheduled,
.badge.draft,
.badge.submitted {
  background: var(--surface-muted, #edf1fd);
  color: var(--blue-ink, #6c86c2);
}
.badge.completed,
.badge.published,
.badge.reviewed,
.badge.active {
  background: var(--green-soft, #ebf6f0);
  color: var(--green-ink, #539775);
}
.badge.returned {
  background: var(--orange-soft, #fff1e8);
  color: var(--orange-ink, #b78556);
}
.badge.cancelled,
.badge.inactive {
  background: var(--danger-soft, #fbefef);
  color: var(--danger-ink, #ba7c7c);
}
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.group-card {
  padding: 23px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface, #fff);
  text-align: left;
  transition:
    transform 0.15s,
    border-color 0.15s;
  color: var(--text);
}
.group-card:hover,
.course-card:hover,
.assignment-card:hover {
  transform: translateY(-2px);
  border-color: var(--line, #cdd6ee);
}
.group-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.group-card-top > svg {
  color: var(--text-secondary, #a5adbd);
  margin-left: auto;
}
.group-card-top .subtle {
  font-size: 9px;
}
.group-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 47px;
  height: 47px;
  border-radius: 13px;
}
.group-card h2 {
  font-size: 17px;
  line-height: 1.5;
  margin-bottom: 8px;
}
.group-card p {
  font-size: 10px;
  color: var(--text-secondary, #8b98ac);
  min-height: 34px;
}
.group-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 19px 0;
  border-bottom: 1px solid var(--line, #f0f3f8);
}
.group-card-footer > span:first-child {
  display: flex;
  gap: 7px;
  align-items: center;
  font-size: 10px;
  color: var(--text-secondary, #9ba6b8);
}
.teacher-line {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 16px;
  font-size: 10px;
  color: var(--text-secondary, #7f8ea5);
}
.course-card {
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: left;
  transition:
    transform 0.15s,
    border-color 0.15s;
}
.course-cover {
  height: 144px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.course-cover:before,
.course-cover:after {
  content: '';
  width: 100px;
  height: 100px;
  border: 1px solid currentColor;
  opacity: 0.12;
  position: absolute;
  border-radius: 50%;
  right: -12px;
  bottom: -18px;
}
.course-cover:after {
  width: 160px;
  height: 160px;
  right: -36px;
  bottom: -47px;
}
.course-cover > svg {
  opacity: 0.65;
  stroke-width: 1.2;
}
.course-cover > span {
  position: absolute;
  bottom: 14px;
  left: 20px;
  font-size: 7px;
  font-weight: 700;
  letter-spacing: 1.5px;
  opacity: 0.6;
}
.course-body {
  padding: 23px;
}
.course-body h2 {
  margin: 14px 0 10px;
  font-size: 17px;
}
.course-body p {
  font-size: 11px;
  color: var(--text-secondary, #8a98ae);
  min-height: 58px;
}
.course-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line, #f0f3f8);
  padding-top: 18px;
  margin-top: 18px;
  font-size: 10px;
  color: var(--text-secondary, #8e9bb0);
}
.assignment-card {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: left;
  transition:
    transform 0.15s,
    border-color 0.15s;
}
.assignment-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}
.assignment-card-top .subtle {
  font-size: 9px;
  flex: 1;
}
.assignment-card-top > svg {
  color: var(--text-secondary, #a1abc0);
}
.assignment-card h3 {
  font-size: 16px;
  margin-bottom: 10px;
}
.assignment-excerpt {
  font-size: 10px;
  color: var(--text-secondary, #8e99ac);
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 54px;
}
.assignment-card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 22px;
  font-size: 10px;
  color: var(--text-secondary, #8a97ac);
}
.assignment-card-bottom > span:first-child {
  display: flex;
  gap: 5px;
  align-items: center;
  font-size: 9px;
}
.progress-track {
  height: 4px;
  background: var(--surface-muted, #eff2f9);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 12px;
  min-width: 60px;
}
.progress-track span {
  display: block;
  height: 100%;
  background: #8ca5e8;
  border-radius: 4px;
}
.week-control {
  display: flex;
  align-items: center;
  gap: 14px;
}
.week-control > button {
  display: flex;
  align-items: center;
  min-height: 35px;
  color: var(--text-secondary, #8191a9);
}
.week-control > strong {
  font-size: 14px;
}
.week-strip {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
}
.week-strip > div {
  text-align: center;
  border-right: 1px solid var(--line);
  padding: 16px 5px;
}
.week-strip > div:last-child {
  border: 0;
}
.week-strip span {
  display: block;
  color: var(--text-secondary, #9aa6b8);
  font-size: 10px;
  text-transform: capitalize;
}
.week-strip strong {
  font-size: 21px;
  display: block;
  margin: 9px 0 5px;
  font-weight: 750;
}
.week-strip small {
  display: block;
  font-size: 9px;
  color: var(--text-secondary, #a2adc0);
}
.week-strip .current {
  background: var(--blue-soft);
}
.week-strip .current strong {
  color: var(--blue);
}
.schedule-agenda {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.agenda-day {
  padding: 17px 23px;
  font-size: 12px;
  font-weight: 700;
  text-transform: capitalize;
  display: flex;
  align-items: center;
  gap: 10px;
}
.empty {
  text-align: center;
  padding: 50px 25px;
  max-width: 100%;
  color: var(--text-secondary, #95a1b4);
  grid-column: 1/-1;
}
.empty-icon {
  display: inline-flex;
  width: 55px;
  height: 55px;
  align-items: center;
  justify-content: center;
  background: var(--surface-muted, #f3f5fb);
  border-radius: 16px;
  color: var(--blue-ink, #a5b2ce);
  margin-bottom: 16px;
}
.empty h3 {
  font-size: 14px;
  color: var(--text-secondary, #7b8da8);
  margin-bottom: 9px;
}
.empty p {
  font-size: 11px;
}
.quiet-placeholder {
  padding: 14px 23px 25px;
  color: var(--text-secondary, #9aa6b8);
  font-size: 11px;
}
.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-bottom: 23px;
}
.settings-content {
  padding: 3px 23px 23px;
}
.settings-content h3 {
  margin: 0 0 8px;
}
.settings-content > p {
  font-size: 11px;
  color: var(--text-secondary, #8a98ac);
  margin-bottom: 15px;
}
.notice {
  padding: 14px 16px;
  border-radius: 8px;
  background: var(--surface-muted, #f7f9fd);
  color: var(--text-secondary, #8490a6);
  font-size: 11px;
  line-height: 1.8;
  margin: 17px 0;
}
.member-row {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 17px 23px;
  border-top: 1px solid var(--line, #f0f3f8);
  font-size: 11px;
}
.member-row > div {
  flex: 1;
}
.member-row small {
  display: block;
  font-size: 9px;
  color: var(--text-secondary, #94a2b7);
  margin-top: 4px;
}
.member-row > .badge {
  margin: 0 20px;
}
.member-row > .text-button {
  width: 115px;
  justify-content: end;
}
.invite-result {
  background: var(--surface-muted, #f6f8ff);
  border-radius: 9px;
  padding: 15px;
  margin-bottom: 15px;
  font-size: 11px;
}
.invite-result input {
  width: 100%;
  margin: 12px 0 5px;
  border: 1px solid var(--line, #e1e6f1);
  border-radius: 5px;
  padding: 8px;
  background: var(--surface);
  font-size: 10px;
}
.invite-item {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-top: 1px solid var(--line, #edf1f8);
  font-size: 11px;
}
.invite-item small {
  display: block;
  font-size: 9px;
  color: var(--text-secondary, #92a0b5);
  margin-top: 5px;
}
.link-row,
.audit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  padding: 15px 23px;
  border-top: 1px solid var(--line, #f0f3f8);
  font-size: 11px;
}
.audit-row .subtle {
  font-size: 10px;
}
.report-table {
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
}
.report-note {
  font-size: 10px;
  color: var(--text-secondary, #929db0);
  margin-top: 20px;
  display: flex;
  gap: 8px;
  line-height: 1.9;
}
.notification-row {
  display: flex;
  align-items: center;
  gap: 17px;
  width: 100%;
  text-align: left;
  padding: 21px 23px;
  border-bottom: 1px solid var(--line, #f0f3f8);
}
.notification-row > span:nth-child(2) {
  flex: 1;
}
.notification-row strong {
  font-size: 12px;
}
.notification-row p {
  font-size: 10px;
  color: var(--text-secondary, #90a0b7);
  margin-top: 5px;
}
.notification-row small {
  font-size: 9px;
  color: var(--text-secondary, #a5b0c1);
  margin-top: 5px;
  display: block;
}
.notification-row.unread {
  background: var(--surface-muted, #fcfdff);
}
.unread-dot {
  width: 6px;
  height: 6px;
  background: var(--blue);
  border-radius: 50%;
}
.notification-row > svg {
  color: var(--text-secondary, #a5afbf);
}
.back-button {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--text-secondary, #96a2b7);
  padding: 0 0 22px;
  min-height: 32px;
}
.detail-tags {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin: 0 0 23px;
  font-size: 11px;
  color: var(--text-secondary, #91a0b5);
}
.detail-tags > span:not(.badge) {
  display: flex;
  align-items: center;
  gap: 7px;
}
.lesson-detail-meta {
  display: flex;
  align-items: center;
  gap: 23px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.lesson-detail-meta > span:not(.badge) {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-secondary, #8b9ab1);
}
.lesson-detail-meta > .button {
  margin-left: auto;
}
.attendance-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 23px;
  border-top: 1px solid var(--line, #f0f3f8);
}
.attendance-row strong {
  font-size: 11px;
  flex: 1;
}
.attendance-row > span:last-child {
  font-size: 10px;
  color: var(--text-secondary, #8796ae);
}
.attendance-row select {
  max-width: 190px;
  font-size: 10px;
  padding: 7px;
}
.prose {
  white-space: pre-wrap;
  padding: 10px 23px 25px;
  font-size: 13px;
  line-height: 1.95;
  color: var(--text-secondary, #64748e);
  word-break: break-word;
}
.private-note {
  background: var(--orange-soft, #fffbf2);
  padding: 17px 23px;
  color: var(--text-secondary, #a29571);
  font-size: 11px;
}
.private-note p {
  white-space: pre-wrap;
  margin-top: 7px;
}
.bottom-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 23px;
  flex-wrap: wrap;
}
.roster-row {
  display: flex;
  align-items: center;
  gap: 13px;
  border-top: 1px solid var(--line, #f0f3f8);
  padding: 15px 23px;
}
.roster-row > button:not(.text-button) {
  font-size: 11px;
  font-weight: 650;
  text-align: left;
  flex: 1;
}
.roster-row > .text-button {
  font-size: 9px;
}
.module-panel {
  margin-bottom: 22px;
}
.module-number {
  display: inline-block;
  font-size: 13px;
  color: var(--blue-ink, #9bb0d8);
  font-weight: 600;
  margin-right: 6px;
}
.material-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 17px 23px;
  border-top: 1px solid var(--line, #f0f3f8);
}
.material-row > button:not(.icon-button) {
  flex: 1;
  text-align: left;
}
.material-row strong {
  font-size: 12px;
  display: block;
}
.material-row button > span {
  display: block;
  font-size: 9px;
  color: var(--text-secondary, #99a6bb);
  margin-top: 5px;
}
.material-row > svg {
  color: var(--text-secondary, #a1adbf);
}
.material-content {
  padding: 25px;
}
.material-content > .prose {
  padding: 0;
}
.result-row {
  display: flex;
  gap: 15px;
  align-items: center;
  width: 100%;
  padding: 18px 23px;
  border-top: 1px solid var(--line, #f0f3f8);
  text-align: left;
  font-size: 12px;
}
.result-row > span:first-child {
  flex: 1;
}
.result-row small {
  font-size: 10px;
  color: var(--text-secondary, #8e9cb2);
  display: block;
  margin-top: 7px;
}
.result-row > strong {
  font-size: 11px;
  min-width: 50px;
  text-align: right;
}
.submission-row {
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 19px 23px;
  border-top: 1px solid var(--line, #f0f3f8);
  font-size: 11px;
}
.submission-row > .person-cell {
  flex: 1;
}
.submission-row > span:not(.badge) {
  min-width: 50px;
  text-align: center;
}
.submission-editor {
  padding: 0 23px 23px;
}
.feedback-box {
  border: 1px solid var(--line, #e6edf8);
  background: var(--surface-muted, #f8faff);
  padding: 17px;
  border-radius: 10px;
  margin-bottom: 23px;
  font-size: 12px;
}
.feedback-box.returned {
  background: var(--orange-soft, #fffbf6);
  border-color: var(--line, #f4e9d8);
}
.feedback-box.reviewed {
  background: var(--green-soft, #f6fbf8);
  border-color: var(--line, #e5f0e9);
}
.feedback-box > strong {
  margin-left: 15px;
  color: var(--text-secondary, #678672);
  font-size: 12px;
}
.feedback-box p {
  white-space: pre-wrap;
  margin-top: 14px;
  color: var(--text-secondary, #7d8ba0);
  font-size: 12px;
}
.feedback-box small {
  font-size: 10px;
  color: var(--text-secondary, #a29682);
  display: block;
  margin-top: 10px;
}
.upload-area {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px dashed var(--line, #dbe3f0);
  background: var(--surface-muted, #fafbfe);
  padding: 17px;
  border-radius: 9px;
  color: var(--blue-ink, #97a8c4);
}
.upload-area label {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
  cursor: pointer;
}
.upload-area strong {
  font-size: 11px;
  color: var(--blue-ink, #758bad);
}
.upload-area span {
  font-size: 9px;
  color: var(--text-secondary, #9dacc4);
}
.upload-area input {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 100%;
  cursor: pointer;
}
.attached-file {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 10px;
  color: var(--text-secondary, #8798b6);
}
.attached-file button {
  margin-left: auto;
  color: var(--text-secondary, #a0acc0);
}
.attempt-history {
  border: 1px solid var(--line, #e9edf5);
  border-radius: 10px;
  margin-top: 18px;
}
.attempt-history summary {
  padding: 14px 17px;
  cursor: pointer;
  font-size: 11px;
  color: var(--text-secondary, #8193b0);
}
.attempt-history summary > .badge {
  float: right;
}
.attempt-history .prose {
  padding: 4px 17px 17px;
  font-size: 12px;
}
.attachment-link {
  display: flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 10px 23px 20px;
  font-size: 11px;
}
.review-form {
  padding: 0 23px 23px;
}
.score-field {
  max-width: 190px;
}
.modal-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #1c2b4c55;
  z-index: 100;
  padding: 25px;
  backdrop-filter: blur(3px);
}
.modal {
  background: var(--surface);
  border-radius: 18px;
  width: 560px;
  max-width: 100%;
  max-height: calc(100dvh - 50px);
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 80px #18274333;
}
.modal-header {
  padding: 25px 27px 21px;
  display: flex;
  align-items: flex-start;
  gap: 15px;
  border-bottom: 1px solid var(--line);
}
.modal-header > div {
  flex: 1;
}
.modal-header h2 {
  font-size: 20px;
  letter-spacing: -0.6px;
}
.modal-header p {
  font-size: 11px;
  color: var(--text-secondary, #929fb3);
  margin-top: 8px;
}
.modal-header .icon-button {
  padding: 3px;
  min-height: 30px;
  min-width: 30px;
}
.modal-body {
  overflow: auto;
  padding: 24px 27px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 20px;
  font-size: 12px;
}
.field > span:first-child {
  font-size: 11px;
  font-weight: 650;
  color: var(--text-secondary, #71829c);
}
.field > span i {
  font-style: normal;
  color: var(--text-secondary, #a797b8);
}
.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid var(--line, #dfe6f1);
  border-radius: 8px;
  padding: 11px 12px;
  background: var(--surface, #fff);
  color: var(--text-secondary, #526582);
  font-size: 12px;
  min-height: 43px;
}
.field textarea {
  resize: vertical;
  line-height: 1.8;
  min-height: 100px;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--line, #91a7eb);
}
.field small {
  font-size: 10px;
  color: var(--text-secondary, #9aa8bd);
  line-height: 1.6;
  font-weight: 400;
}
.multi-list {
  max-height: 200px;
  overflow: auto;
  border: 1px solid var(--line, #e1e7f1);
  border-radius: 8px;
  padding: 5px 12px;
}
.multi-list label {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 0;
  font-size: 11px;
  color: var(--text-secondary, #8593ac);
}
.multi-list input {
  width: 15px;
  min-height: 15px;
  margin: 0;
  accent-color: var(--blue);
}
.multi-list > small {
  display: block;
  padding: 10px;
}
.modal-footer {
  border-top: 1px solid var(--line);
  padding: 18px 27px;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}
.form-error {
  background: var(--danger-soft, #fff1f0);
  border: 1px solid var(--line, #f6dfdc);
  color: var(--danger-ink, #bc6863);
  border-radius: 8px;
  padding: 12px 15px;
  font-size: 11px;
  line-height: 1.7;
  margin-top: 15px;
}
.toast {
  position: fixed;
  bottom: 25px;
  left: calc(50% + 90px);
  transform: translateX(-50%);
  z-index: 150;
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface, #fff);
  border: 1px solid var(--line, #e1e8f1);
  box-shadow: 0 8px 35px #29395c18;
  border-radius: 11px;
  padding: 15px 20px;
  font-size: 12px;
  color: var(--text-secondary, #647b94);
  max-width: calc(100% - 30px);
}
.toast > svg {
  color: var(--text-secondary, #81a993);
}
.toast button {
  display: flex;
  margin-left: 10px;
  color: var(--text-secondary, #a1adbd);
}
.error-banner {
  background: var(--danger-soft, #fff1f0);
  color: var(--danger-ink, #b56765);
  padding: 16px;
  border-radius: 9px;
  margin-bottom: 20px;
  font-size: 12px;
  display: flex;
  justify-content: space-between;
  gap: 15px;
}
.error-banner button {
  color: var(--danger-ink, #b56765);
  text-decoration: underline;
}
.loading-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 23px;
  color: var(--text-secondary, #9aa8bf);
  font-size: 12px;
}
.loading-screen .brand {
  margin-bottom: 25px;
}
.spin {
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.onboarding {
  max-width: 860px;
  margin: 65px auto;
}
.onboarding h1 {
  font-size: 46px;
  margin: 20px 0;
  letter-spacing: -2px;
  line-height: 1.3;
}
.onboarding > p {
  font-size: 13px;
  color: var(--text-secondary, #8a99b0);
  max-width: 600px;
}
.onboarding-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
  margin-top: 38px;
}
.onboarding-card {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 29px;
  border-radius: 18px;
  text-align: left;
  transition: border-color 0.2s;
}
.onboarding-card:hover {
  border-color: var(--line, #b6c7ec);
}
.onboarding-card h2 {
  margin: 22px 0 12px;
  font-size: 18px;
}
.onboarding-card p {
  font-size: 11px;
  color: var(--text-secondary, #98a5ba);
  margin-bottom: 18px;
}
.welcome {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 80px;
  padding: 60px;
  background: var(--surface-muted, #f7f9fd);
}
.welcome-card {
  max-width: 590px;
}
.welcome-card .brand {
  margin-bottom: 65px;
}
.welcome-card h1 {
  font-size: 58px;
  letter-spacing: -2.8px;
  line-height: 1.25;
  margin: 25px 0;
}
.welcome-card h1 em {
  font-style: normal;
  color: var(--blue);
}
.welcome-card > p {
  font-size: 14px;
  color: var(--text-secondary, #8594ad);
  max-width: 490px;
  line-height: 1.95;
}
.welcome-card > .button {
  margin-top: 30px;
  padding: 15px 24px;
  font-size: 13px;
}
.welcome-features {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 43px;
  font-size: 10px;
  color: var(--text-secondary, #899ab5);
}
.welcome-art {
  position: relative;
  width: 330px;
  height: 400px;
  flex-shrink: 0;
  border-radius: 48% 48% 38% 38%;
  background: var(--surface-muted, #e9eefb);
}
.art-note {
  position: absolute;
  top: 60px;
  left: -20px;
  width: 310px;
  background: var(--surface, #fff);
  border: 1px solid var(--line, #dde5f4);
  border-radius: 18px;
  padding: 28px;
  box-shadow: 0 18px 45px #4b67a90c;
  transform: rotate(-4deg);
}
.art-note > span {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--blue-ink, #98a8c4);
}
.art-note h3 {
  font-size: 23px;
  margin: 18px 0 10px;
}
.art-note p {
  font-size: 12px;
  color: var(--blue-ink, #8ca0c1);
}
.art-avatars {
  margin-top: 22px;
  color: var(--blue-ink, #7e91ba);
  font-size: 13px;
  font-weight: 750;
}
.art-small {
  position: absolute;
  bottom: 65px;
  right: -35px;
  background: var(--green-soft, #edf5ef);
  padding: 23px;
  border-radius: 14px;
  border: 1px solid var(--line, #dcebe1);
  transform: rotate(5deg);
  font-size: 12px;
  color: var(--text-secondary, #6a987e);
  box-shadow: 0 15px 40px #2e5b4009;
}
.art-small strong {
  display: block;
  color: var(--text-secondary, #8fab98);
  font-size: 10px;
  font-weight: 500;
  margin: 8px 0 0 17px;
}
.art-circle {
  position: absolute;
  right: 13px;
  top: 12px;
  font-size: 75px;
  color: var(--blue-ink, #a9b8df);
}
@media (min-width: 1600px) {
  .main-content {
    padding-top: 42px;
  }
  .dashboard-grid {
    grid-template-columns: minmax(0, 1fr) 330px;
  }
  .focus-card {
    padding: 27px;
  }
  .focus-card h2 {
    font-size: 20px;
  }
  .focus-card p {
    font-size: 12px;
  }
  .stat-card > div > span:first-child {
    font-size: 12px;
  }
  .lesson-info strong {
    font-size: 14px;
  }
  .lesson-info span {
    font-size: 11px;
  }
}
@media (max-width: 1250px) {
  .sidebar {
    width: 224px;
    padding-left: 15px;
    padding-right: 15px;
  }
  .main-area {
    margin-left: 224px;
  }
  .topbar {
    padding: 0 26px;
  }
  .main-content {
    padding: 30px 26px;
  }
  .dashboard-grid {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 19px;
  }
  .panel-heading {
    padding: 19px;
  }
  .lesson-row {
    padding: 19px;
    gap: 12px;
  }
  .lesson-format span {
    display: none;
  }
  .stats-grid {
    gap: 13px;
  }
  .stat-card {
    padding: 15px;
  }
  .stat-card > div > span:first-child {
    font-size: 10px;
  }
  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .student-table {
    grid-template-columns: minmax(170px, 1.5fr) 1fr 85px 65px 14px;
    gap: 10px;
  }
  .table-row,
  .table-head {
    padding: 18px;
  }
  .member-row > .badge {
    margin: 0 5px;
  }
  .panel-heading .text-button {
    font-size: 10px;
  }
  .topbar-right {
    gap: 13px;
  }
  .welcome {
    gap: 50px;
  }
  .welcome-card h1 {
    font-size: 50px;
  }
}
@media (max-width: 1050px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  .dashboard-grid > aside {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .attention-panel {
    margin-top: 0;
  }
  .focus-symbol {
    display: none;
  }
  .focus-card h2 {
    margin-top: 17px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .settings-grid {
    grid-template-columns: 1fr;
  }
  .profile strong {
    max-width: 120px;
  }
  .greeting-dot {
    display: none;
  }
  .page-heading h1 {
    font-size: 25px;
  }
  .page-heading .button {
    font-size: 10px;
  }
  .welcome-art {
    width: 260px;
    height: 330px;
  }
  .art-note {
    width: 260px;
  }
  .art-note h3 {
    font-size: 20px;
  }
  .welcome {
    padding: 40px;
  }
  .welcome-card h1 {
    font-size: 44px;
  }
  .welcome-features {
    gap: 12px;
  }
  .member-row {
    gap: 10px;
  }
  .member-row > .text-button {
    width: 100px;
    font-size: 10px;
  }
}
@media (max-width: 800px) {
  .sidebar {
    transform: translateX(-100%);
    width: 246px;
    transition: transform 0.2s;
    box-shadow: 15px 0 45px #19284715;
  }
  .menu-open .sidebar {
    transform: translateX(0);
  }
  .menu-open:after {
    content: '';
    position: fixed;
    inset: 0;
    left: 246px;
    background: #23345322;
    z-index: 19;
    pointer-events: none;
  }
  .main-area {
    margin-left: 0;
  }
  .mobile-menu {
    display: flex;
  }
  .topbar {
    height: 66px;
    padding: 0 20px;
    gap: 10px;
  }
  .breadcrumb {
    font-size: 10px;
    gap: 7px;
  }
  .breadcrumb > strong {
    font-size: 10px;
  }
  .topbar-right {
    margin-left: auto;
    gap: 8px;
  }
  .topbar-right > .avatar {
    display: none;
  }
  .main-content {
    padding: 27px 20px 36px;
  }
  .page-heading h1 {
    font-size: 25px;
  }
  .toast {
    left: 50%;
  }

  .onboarding {
    margin: 30px auto;
  }
  .welcome-art {
    display: none;
  }
  .welcome {
    justify-content: flex-start;
    padding: 40px;
    min-height: 100dvh;
  }
  .welcome-card h1 {
    font-size: 55px;
  }
  .welcome-card .brand {
    margin-bottom: 60px;
  }
  .demo-switch select {
    font-size: 10px;
    max-width: 110px;
  }
  .demo-switch > span {
    display: none;
  }
  .member-row {
    flex-wrap: wrap;
  }
  .member-row > div {
    min-width: 140px;
  }
  .report-table {
    grid-template-columns: 1.3fr 1fr 1fr 1fr;
    gap: 10px;
  }
}
@media (max-width: 560px) {
  .topbar {
    padding: 0 13px;
  }
  .breadcrumb {
    display: none;
  }
  .main-content {
    padding: 24px 15px 32px;
  }
  .page-heading {
    align-items: flex-start;
    flex-wrap: wrap;
    margin-bottom: 23px;
    gap: 15px;
  }
  .page-heading h1 {
    font-size: 25px;
    letter-spacing: -0.8px;
  }
  .page-heading p {
    font-size: 11px;
  }
  .page-heading .button {
    font-size: 11px;
    padding: 10px 13px;
    min-height: 40px;
  }
  .stats-grid {
    gap: 11px;
    margin-bottom: 22px;
  }
  .stats-grid.three {
    grid-template-columns: 1fr;
  }
  .stat-card {
    border-radius: 12px;
    padding: 14px;
  }
  .stat-card > strong {
    font-size: 28px;
    margin-top: 10px;
  }
  .stat-card > small {
    font-size: 8px;
  }
  .stat-card .mini-icon {
    width: 27px;
    height: 27px;
    border-radius: 7px;
  }
  .stat-card .mini-icon svg {
    width: 16px;
    height: 16px;
  }
  .dashboard-grid {
    gap: 20px;
  }
  .dashboard-grid > aside {
    grid-template-columns: 1fr;
  }
  .panel {
    border-radius: 12px;
  }
  .panel-heading {
    padding: 17px;
  }
  .panel-heading h2 {
    font-size: 14px;
  }
  .panel-heading .text-button {
    font-size: 9px;
  }
  .panel-heading > .subtle {
    display: none;
  }
  .lesson-row {
    padding: 18px 15px;
    gap: 12px;
  }
  .lesson-info strong {
    font-size: 11px;
  }
  .lesson-time {
    width: 41px;
  }
  .lesson-time strong {
    font-size: 12px;
  }
  .lesson-time span {
    font-size: 9px;
  }
  .lesson-info span {
    font-size: 9px;
  }
  .lesson-format {
    display: none;
  }
  .lesson-row > .badge {
    font-size: 8px;
    padding: 4px 5px;
  }
  .lesson-row > svg:last-child {
    width: 14px;
  }
  .focus-card {
    padding: 22px;
  }
  .focus-card h2 {
    font-size: 20px;
  }
  .focus-card p {
    font-size: 11px;
  }
  .attention-panel {
    margin-top: 0;
  }
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 17px;
  }
  .toolbar {
    gap: 13px;
  }
  .search-box {
    width: 100%;
  }
  .tabs {
    width: 100%;
    justify-content: center;
  }
  .tabs button {
    flex: 1;
    font-size: 10px;
  }
  .table-panel {
    background: transparent;
    border: 0;
    overflow: visible;
  }
  .table-head.student-table {
    display: none;
  }
  .table-row.student-table {
    display: grid;
    grid-template-columns: 1fr 75px;
    gap: 10px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 12px;
    margin-bottom: 12px;
    padding: 16px;
    min-height: auto;
  }
  .student-table .person-cell {
    grid-column: 1/-1;
  }
  .student-table .cell-groups {
    grid-column: 1;
    font-size: 10px;
    padding-left: 50px;
  }
  .student-table > span:nth-child(3) {
    grid-column: 1;
    font-size: 10px;
    color: var(--text-secondary, #8b9bb3);
    padding-left: 50px;
  }
  .student-table > .badge {
    grid-column: 2;
    grid-row: 2;
  }
  .student-table > svg {
    grid-column: 2;
    grid-row: 3;
    margin-left: auto;
    color: var(--text-secondary, #9facc0);
  }
  .week-strip > div {
    padding: 13px 3px;
  }
  .week-strip strong {
    font-size: 18px;
  }
  .week-strip span {
    font-size: 9px;
  }
  .week-control {
    gap: 10px;
    width: 100%;
    justify-content: space-between;
  }
  .week-control > strong {
    font-size: 12px;
  }
  .week-control .button {
    font-size: 9px;
    padding: 7px;
    min-height: 30px;
  }
  .toolbar > select {
    width: 100%;
  }
  .agenda-day {
    padding: 14px 16px;
    font-size: 11px;
  }
  .report-table {
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 10px;
    padding: 16px 10px;
    font-size: 10px;
  }
  .report-table > :last-child {
    display: none;
  }
  .report-table .person-cell {
    gap: 8px;
  }
  .report-table .avatar {
    width: 25px;
    height: 25px;
    font-size: 8px;
  }
  .report-table .person-cell strong {
    font-size: 9px;
  }
  .report-table .block {
    font-size: 8px;
  }
  .report-table.table-head {
    font-size: 8px;
    border-radius: 8px 8px 0 0;
  }
  .report-table.table-row {
    background: var(--surface);
  }
  .settings-grid {
    gap: 17px;
  }
  .settings-content {
    padding: 0 17px 20px;
  }
  .member-row {
    padding: 16px;
  }
  .member-row .text-button {
    width: auto;
    font-size: 10px;
    min-height: 32px;
  }
  .member-row > span:not(.avatar):not(.badge) {
    font-size: 10px;
  }
  .link-row,
  .audit-row {
    padding: 14px 17px;
    font-size: 10px;
    flex-wrap: wrap;
  }
  .audit-row .subtle {
    font-size: 9px;
  }
  .notification-row {
    padding: 19px 17px;
    gap: 12px;
  }
  .notification-row p {
    font-size: 10px;
  }
  .notification-row strong {
    font-size: 11px;
  }
  .lesson-detail-meta {
    gap: 15px;
  }
  .lesson-detail-meta > .button {
    margin-left: 0;
  }
  .attendance-row {
    padding: 14px 15px;
    gap: 8px;
  }
  .attendance-row strong {
    font-size: 10px;
  }
  .attendance-row .avatar {
    width: 24px;
    height: 24px;
    font-size: 8px;
  }
  .attendance-row select {
    max-width: 145px;
    font-size: 9px;
  }
  .roster-row {
    padding: 15px;
  }
  .submission-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 13px;
    padding: 17px;
  }
  .submission-row > .person-cell {
    grid-column: 1/-1;
  }
  .submission-row > .button {
    grid-column: 2;
    grid-row: 2/4;
  }
  .submission-row > span:not(.badge) {
    text-align: left;
    font-size: 10px;
  }
  .result-row {
    padding: 17px;
    gap: 8px;
  }
  .result-row .badge {
    font-size: 8px;
  }
  .result-row strong {
    font-size: 10px;
  }
  .result-row small {
    font-size: 9px;
  }
  .modal-overlay {
    padding: 12px;
  }
  .modal {
    max-height: calc(100dvh - 24px);
    border-radius: 14px;
  }
  .modal-header {
    padding: 20px;
  }
  .modal-header h2 {
    font-size: 18px;
  }
  .modal-body {
    padding: 20px;
  }
  .modal-footer {
    padding: 15px 20px;
    gap: 10px;
  }
  .modal-footer .button {
    font-size: 11px;
    padding: 11px 14px;
  }
  .prose {
    font-size: 12px;
    padding: 7px 17px 22px;
  }
  .submission-editor,
  .review-form {
    padding: 0 17px 20px;
  }
  .bottom-actions > .button {
    font-size: 10px;
    padding: 10px 13px;
  }
  .onboarding h1 {
    font-size: 36px;
    letter-spacing: -1.5px;
  }
  .onboarding-options {
    grid-template-columns: 1fr;
    gap: 17px;
    margin-top: 25px;
  }
  .onboarding-card {
    padding: 23px;
  }
  .onboarding-card h2 {
    font-size: 17px;
    margin: 19px 0 10px;
  }
  .welcome {
    padding: 30px;
  }
  .welcome-card .brand {
    font-size: 23px;
    margin-bottom: 55px;
  }
  .welcome-card h1 {
    font-size: 43px;
    letter-spacing: -2px;
  }
  .welcome-card > p {
    font-size: 13px;
  }
  .welcome-features {
    gap: 15px;
    flex-direction: column;
    margin-top: 30px;
  }
  .toast {
    font-size: 11px;
    padding: 14px 15px;
    min-width: 240px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

.auth-form {
  display: grid;
  gap: 16px;
  margin: 24px 0;
}
.auth-form label {
  display: grid;
  gap: 8px;
  text-align: left;
}
.auth-form input,
.auth-form select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
}
.profile-open {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 1;
  min-width: 0;
  text-align: left;
  padding: 6px;
  border-radius: 10px;
}
.profile-open:hover {
  background: var(--blue-soft);
}
.profile-open > span:last-child {
  min-width: 0;
  flex: 1;
}
.account-profile-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  overflow-wrap: anywhere;
}
.account-profile dl {
  margin: 0 0 20px;
}
.account-profile dl > div {
  display: grid;
  grid-template-columns: minmax(110px, 1fr) minmax(0, 1.5fr);
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.account-profile dt {
  color: var(--muted);
}
.account-profile dd {
  margin: 0;
  overflow-wrap: anywhere;
}
@media (max-width: 480px) {
  .account-profile dl > div {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

.owner-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}
.platform-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 24px;
}
.platform-stats .panel {
  padding: 20px;
  display: grid;
  gap: 8px;
}
.platform-stats strong {
  font-size: 28px;
}
.platform-stats span,
.platform-course span {
  color: var(--muted);
}
.platform-course {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  overflow-wrap: anywhere;
}
.owner-cabinet .topbar {
  position: sticky;
  top: 0;
}
@media (max-width: 600px) {
  .owner-content {
    padding: 20px 12px;
  }
  .owner-cabinet .brand {
    font-size: 16px;
  }
  .owner-cabinet .topbar {
    gap: 8px;
    padding: 12px;
  }
  .owner-cabinet .profile-open small {
    font-size: 10px;
  }
}
:root {
  --canvas-glow: #ccd5d8;
  --card-shadow: 0 4px 20px #25375406;
  --accent-start: #526b78;
  --accent-end: #546a6c;
}
:root[data-theme='dark'] {
  --canvas-glow: #202945;
  --card-shadow: 0 4px 20px #00000012;
  --accent-start: #5064ce;
  --accent-end: #6654c8;
}
.main-area,
.owner-cabinet {
  background:
    radial-gradient(ellipse 900px 460px at 100% 0%, var(--canvas-glow), transparent 80%), var(--bg);
}
:is(.panel, .stat-card, .group-card, .course-card, .assignment-card, .onboarding-card) {
  box-shadow: var(--card-shadow);
}
.nav-item {
  position: relative;
  border-radius: 12px;
}
.nav-item.selected {
  background: linear-gradient(110deg, var(--blue-soft), var(--surface-muted));
  color: var(--blue-ink);
}
.nav-item.selected:before {
  left: 0;
  height: 18px;
  width: 3px;
  border-radius: 3px;
}
.workspace-switch {
  background: var(--surface-muted);
  border-radius: 14px;
}
.button {
  border-radius: 12px;
}
:root .button.primary {
  background: linear-gradient(115deg, var(--accent-start), var(--accent-end));
  box-shadow: 0 4px 12px #5266cd20;
}
:root .button.primary:hover {
  background: var(--accent-start);
}
.stat-card {
  background: linear-gradient(135deg, var(--surface), var(--surface-muted));
}
.page-heading h1 {
  letter-spacing: -0.8px;
}
.group-icon,
.mini-icon {
  border-radius: 12px;
}
:root:not([data-theme='dark']) .welcome {
  background: radial-gradient(ellipse at 12% 8%, var(--canvas-glow), transparent 60%), var(--bg);
}
:root:not([data-theme='dark']) .welcome-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 36px;
  box-shadow:
    0 20px 65px #3039510a,
    0 2px 8px #30395104;
}
:root:not([data-theme='dark'])
  :is(.panel, .stat-card, .group-card, .course-card, .assignment-card, .onboarding-card) {
  border-color: var(--line);
  box-shadow: 0 3px 16px #30395104;
}
:root:not([data-theme='dark']) .sidebar {
  background: var(--surface);
}
:root:not([data-theme='dark']) .topbar {
  background: var(--surface);
}
:root:not([data-theme='dark']) :is(.auth-form input, .field input, .field select, .field textarea) {
  background: var(--surface-muted);
  color: var(--text);
  border-color: var(--line);
}
:root:not([data-theme='dark'])
  :is(.auth-form input, .field input, .field select, .field textarea):focus {
  background: var(--surface);
  border-color: var(--blue);
  box-shadow: 0 0 0 3px #526b781c;
}
:root:not([data-theme='dark']) .modal {
  border: 1px solid var(--line);
  box-shadow: 0 24px 80px #26314e26;
}
:root:not([data-theme='dark']) .modal-footer {
  background: var(--surface-muted);
  border-radius: 0 0 18px 18px;
}
@media (max-width: 600px) {
  :root:not([data-theme='dark']) .welcome-card {
    padding: 24px 18px;
    border-radius: 22px;
  }
}
@keyframes window-enter {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
@keyframes veil-enter {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes window-exit {
  to {
    opacity: 0;
    transform: translateY(8px) scale(0.985);
  }
}
@keyframes veil-exit {
  to {
    opacity: 0;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .modal-overlay {
    animation: veil-enter 180ms ease-out both;
  }
  .modal {
    animation: window-enter 220ms cubic-bezier(0.2, 0.75, 0.25, 1) both;
  }
  .modal-overlay.is-closing {
    animation: veil-exit 160ms ease-in both;
    pointer-events: none;
  }
  .modal-overlay.is-closing .modal {
    animation: window-exit 160ms ease-in both;
  }
  .toast,
  .account-profile {
    animation: window-enter 180ms ease-out both;
  }
  .welcome-card {
    animation: window-enter 280ms ease-out both;
  }
  .button,
  .icon-button {
    transition:
      background-color 140ms ease,
      box-shadow 140ms ease,
      transform 140ms ease;
  }
  .button:active:not(:disabled),
  .icon-button:active:not(:disabled) {
    transform: scale(0.98);
  }
  input,
  select,
  textarea {
    transition:
      border-color 140ms ease,
      box-shadow 140ms ease,
      background-color 140ms ease;
  }
}

.teaching-upgrade {
  margin: 20px 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-muted);
}
.teaching-upgrade h3 {
  margin: 0 0 8px;
}
.teaching-upgrade p {
  line-height: 1.6;
  color: var(--muted);
}

.support-launcher {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 80;
  box-shadow: 0 6px 24px #18274322;
}
.support-messages {
  max-height: 280px;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 16px 0;
}
.support-message {
  padding: 12px;
  border-radius: 14px;
  background: var(--surface-muted);
  max-width: 92%;
  overflow-wrap: anywhere;
}
.support-message.staff {
  background: var(--blue-soft);
  align-self: flex-end;
}
.support-message p {
  white-space: pre-wrap;
  margin: 6px 0;
}
.support-message small {
  color: var(--muted);
}
@media (max-width: 600px) {
  .support-launcher {
    right: 12px;
    bottom: 12px;
  }
  .support-messages {
    max-height: 30dvh;
  }
}

[hidden] {
  display: none !important;
}

/* User directory */
.users-panel {
  padding: 24px;
  margin-top: 24px;
  min-width: 0;
}
.users-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.users-heading h2 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
}
.users-heading p {
  margin: 8px 0 0;
}
.users-heading > svg {
  color: var(--muted);
}
.users-count,
.user-badge {
  background: var(--surface-muted);
  color: var(--text-secondary);
  border-radius: 7px;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 600;
}
.users-toolbar {
  display: flex;
  gap: 12px;
  align-items: end;
  margin-bottom: 24px;
}
.users-search {
  position: relative;
  flex: 1;
  min-width: 150px;
}
.users-search svg {
  position: absolute;
  left: 14px;
  top: 15px;
  color: var(--muted);
}
.users-search input,
.users-filter select {
  width: 100%;
  height: 46px;
  border: 1px solid var(--line);
  background: var(--surface-muted);
  color: var(--text);
  border-radius: 11px;
  font-size: 13px;
}
.users-search input {
  padding: 12px 14px 12px 42px;
}
.users-filter {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  min-width: 150px;
}
.users-filter select {
  padding: 0 12px;
}
.users-columns,
.user-row {
  display: grid;
  grid-template-columns: minmax(220px, 1.7fr) minmax(150px, 1fr) 145px 125px;
  gap: 18px;
  align-items: center;
}
.users-columns {
  font-size: 11px;
  color: var(--muted);
  padding: 0 12px 12px;
}
.user-row {
  padding: 18px 12px;
  border-top: 1px solid var(--line);
}
.user-row:hover {
  background: var(--surface-muted);
  border-radius: 10px;
}
.user-identity {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.user-identity > div {
  min-width: 0;
}
.user-identity strong {
  font-size: 14px;
  display: block;
  overflow-wrap: anywhere;
}
.user-identity span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 5px;
  overflow-wrap: anywhere;
}
.user-roles {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.user-badge.accent {
  background: var(--blue-soft);
  color: var(--blue-ink);
}
.user-status {
  display: flex;
  gap: 7px;
  align-items: center;
  font-size: 12px;
  color: var(--green-ink);
}
.user-status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}
.user-status.blocked {
  color: var(--danger-ink);
}
.user-protected {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
}
.user-manage {
  font-size: 12px;
  min-height: 38px;
  padding: 8px 10px;
}
.users-footer {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  color: var(--muted);
  font-size: 12px;
}
.users-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 32px;
  text-align: center;
  color: var(--muted);
}
.users-empty p {
  margin: 0;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.modal {
  width: 620px;
  max-width: 100%;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.modal-header {
  padding: 24px 26px;
  flex-shrink: 0;
  align-items: center;
  background: var(--surface);
}
.modal-header h2 {
  font-size: 21px;
  letter-spacing: -0.5px;
  line-height: 1.35;
  margin: 0;
}
.modal-header p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
  margin: 7px 0 0;
  overflow-wrap: anywhere;
}
.modal-header .icon-button {
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-muted);
  flex-shrink: 0;
}
.modal-body {
  padding: 24px 26px;
  min-height: 0;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}
.modal .field {
  gap: 8px;
  margin-bottom: 20px;
}
.modal .field > span:first-child {
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
}
.modal .field :is(input, select, textarea) {
  border-radius: 11px;
  font-size: 14px;
  min-height: 46px;
  color: var(--text);
  background: var(--surface-muted);
  padding: 12px 14px;
}
.modal .field textarea {
  min-height: 112px;
  line-height: 1.6;
}
.modal .field small {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}
.modal .field :is(input, select, textarea):focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}
.modal .multi-list {
  background: var(--surface-muted);
  border-radius: 12px;
}
.modal .multi-list label {
  font-size: 13px;
}
.modal .multi-list input {
  width: 17px;
  min-height: 17px;
  padding: 0;
}
.modal-footer {
  padding: 16px 26px;
  flex-shrink: 0;
  background: var(--surface-muted);
  gap: 10px;
}
.modal-footer .button {
  min-height: 42px;
  border-radius: 10px;
  font-size: 13px;
}
.modal .account-profile-heading {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-muted);
}
.modal .account-profile dl > div {
  padding: 14px 0;
  gap: 12px;
}
.modal .account-profile dt {
  font-size: 12px;
}
.modal .account-profile dd {
  font-size: 14px;
  overflow-wrap: anywhere;
}
.account-control-section {
  padding: 0 0 20px;
  margin: 0 0 20px;
  border-bottom: 1px solid var(--line);
}
.account-control-section h3 {
  font-size: 14px;
  margin: 0 0 7px;
}
.account-control-section p {
  font-size: 12px;
  line-height: 1.6;
  margin: 0 0 12px;
}
.account-role-edit {
  display: flex;
  gap: 12px;
  align-items: end;
}
.account-role-edit .field {
  flex: 1;
  margin: 0;
}
.account-role-edit .button {
  min-height: 46px;
}
.permission-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}
.permission-row + .permission-row {
  margin-top: 18px;
}
.permission-row > div {
  flex: 1;
}
.permission-row strong {
  font-size: 13px;
}
.permission-row p {
  color: var(--muted);
  margin: 5px 0 0;
}
.permission-row .button {
  flex-shrink: 0;
  font-size: 12px;
}
.account-danger {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}
.account-danger summary {
  color: var(--danger-ink);
  cursor: pointer;
  font-size: 13px;
}
.account-danger p {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}
@media (max-width: 1050px) {
  .users-columns {
    display: none;
  }
  .user-row {
    grid-template-columns: minmax(180px, 1fr) minmax(130px, 1fr);
    gap: 12px;
  }
  .user-manage,
  .user-protected {
    justify-self: end;
  }
  .users-toolbar {
    flex-wrap: wrap;
  }
  .users-search {
    flex-basis: 100%;
  }
  .users-filter {
    flex: 1;
  }
}
@media (max-width: 600px) {
  .users-panel {
    padding: 16px;
  }
  .user-row {
    padding: 16px 0;
  }
  .user-identity {
    grid-column: 1/-1;
  }
  .user-roles {
    grid-column: 1/-1;
  }
  .users-filter {
    min-width: 0;
  }
  .modal-overlay {
    padding: 12px;
    align-items: center;
  }
  .modal {
    border-radius: 18px;
    max-height: calc(100dvh - 24px);
  }
  .modal-header {
    padding: 18px;
  }
  .modal-header h2 {
    font-size: 19px;
  }
  .modal-body {
    padding: 18px;
  }
  .modal-footer {
    padding: 14px 18px;
  }
  .account-role-edit {
    align-items: stretch;
    flex-direction: column;
  }
  .permission-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
  .modal .field :is(input, select, textarea) {
    font-size: 16px;
  }
}
.lf-select {
  display: inline-flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
  vertical-align: middle;
}
.lf-select-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-muted);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}
.lf-select-trigger > span:first-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.lf-select-trigger > span:last-child {
  display: flex;
  flex-shrink: 0;
  color: var(--muted);
}
.lf-select-trigger:hover {
  border-color: var(--muted);
}
.lf-select-trigger:focus-visible,
.lf-select-trigger[data-state='open'] {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}
.lf-select-trigger:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.lf-select-popup {
  z-index: 300;
  min-width: var(--radix-select-trigger-width);
  max-width: calc(100vw - 24px);
  max-height: min(320px, var(--radix-select-content-available-height));
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
  color: var(--text);
  padding: 5px;
  box-shadow: 0 12px 40px #0b102833;
  overflow: hidden;
  transform-origin: var(--radix-select-content-transform-origin);
}
.lf-select-options {
  padding: 2px;
}
.lf-select-option {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 39px;
  padding: 10px 35px 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  line-height: 1.4;
  cursor: pointer;
  outline: none;
  user-select: none;
  overflow-wrap: anywhere;
}
.lf-select-option[data-state='checked'] {
  color: var(--blue-ink);
  background: var(--blue-soft);
  font-weight: 600;
}
.lf-select-option[data-highlighted] {
  background: var(--surface-muted);
  box-shadow: inset 0 0 0 1px var(--line);
}
.lf-select-option[data-disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}
.lf-select-check {
  position: absolute;
  right: 11px;
  display: flex;
  color: var(--blue-ink);
}
.lf-select-scroll {
  display: flex;
  justify-content: center;
  padding: 4px;
  color: var(--muted);
}
select.lf-select-native {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  min-height: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  clip-path: inset(50%);
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}
.field .lf-select,
.auth-form .lf-select,
.users-filter .lf-select {
  width: 100%;
}
.modal .lf-select-trigger {
  min-height: 46px;
  font-size: 14px;
}
.workspace-switch .lf-select {
  flex: 1;
  min-width: 0;
}
.workspace-switch .lf-select-trigger {
  border: 0;
  background: transparent;
  padding: 4px;
  font-size: 12px;
  font-weight: 600;
  min-height: 32px;
}
.workspace-switch > svg:last-child {
  display: none;
}
@media (prefers-reduced-motion: no-preference) {
  .lf-select-popup[data-state='open'] {
    animation: window-enter 140ms ease-out;
  }
  .lf-select-trigger {
    transition:
      border-color 140ms ease,
      background-color 140ms ease;
  }
}
@media (max-width: 600px) {
  .lf-select-trigger,
  .modal .lf-select-trigger {
    font-size: 16px;
  }
  .lf-select-option {
    min-height: 44px;
    font-size: 14px;
  }
}
.mobile-close,
.mobile-backdrop {
  display: none;
}
@media (max-width: 800px) {
  .sidebar {
    width: min(300px, 88vw);
    height: 100dvh;
    overflow-y: auto;
    padding-bottom: calc(22px + env(safe-area-inset-bottom));
    z-index: 95;
    visibility: hidden;
  }
  .menu-open .sidebar {
    visibility: visible;
  }
  .menu-open:after {
    display: none;
  }
  .mobile-close {
    display: flex;
    margin-left: auto;
    margin-bottom: 8px;
    min-height: 44px;
    min-width: 44px;
  }
  .mobile-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 90;
    border: 0;
    border-radius: 0;
    background: #080e2288;
    cursor: default;
  }
  .main-area,
  .main-content,
  .owner-content {
    min-width: 0;
    max-width: 100%;
  }
  .topbar {
    padding-top: env(safe-area-inset-top);
    height: auto;
    min-height: 64px;
    flex-wrap: wrap;
  }
  .nav-item {
    min-height: 46px;
    font-size: 14px;
  }
  .sidebar .brand {
    font-size: 23px;
  }
  .support-launcher {
    bottom: calc(14px + env(safe-area-inset-bottom));
    min-height: 46px;
  }
  .main-content,
  .owner-content {
    padding-bottom: calc(96px + env(safe-area-inset-bottom));
  }
  .toolbar > .lf-select {
    flex: 1;
    min-width: 160px;
  }
  .attendance-row .lf-select {
    min-width: 0;
    max-width: 100%;
  }
}
@media (max-width: 600px) {
  body {
    font-size: 14px;
  }
  .button,
  .icon-button,
  .text-button {
    min-height: 44px;
  }
  .icon-button {
    min-width: 44px;
  }
  .main-content,
  .owner-content {
    padding-left: 14px;
    padding-right: 14px;
  }
  .topbar-right {
    min-width: 0;
    gap: 4px;
  }
  .demo-switch {
    max-width: 140px;
  }
  .demo-switch .lf-select-trigger {
    font-size: 12px;
    padding: 8px;
  }
  .owner-cabinet .topbar {
    gap: 6px;
    padding: 10px 12px;
  }
  .owner-cabinet .brand {
    font-size: 19px;
    margin-right: auto;
  }
  .owner-cabinet .profile-open > span:not(.avatar) {
    display: none;
  }
  .owner-cabinet .profile-open {
    padding: 4px;
    min-width: 44px;
    min-height: 44px;
  }
  .platform-admin h1,
  .page-heading h1 {
    font-size: 25px;
    line-height: 1.25;
    overflow-wrap: anywhere;
  }
  .platform-admin > p,
  .page-heading p {
    font-size: 13px;
    line-height: 1.6;
  }
  .platform-stats,
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .platform-stats .panel,
  .stat-card {
    padding: 14px;
    min-width: 0;
  }
  .platform-stats strong,
  .stat-card > strong {
    font-size: 26px;
  }
  .platform-stats span,
  .stat-card > small,
  .stat-card > div > span:first-child {
    font-size: 12px;
    line-height: 1.4;
  }
  .users-panel {
    padding: 14px;
    margin-top: 16px;
  }
  .users-toolbar {
    gap: 10px;
  }
  .users-search {
    min-width: 0;
  }
  .users-filter {
    min-width: 0;
    width: calc(50% - 5px);
  }
  .user-row {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
  }
  .user-identity strong {
    font-size: 15px;
  }
  .user-identity span {
    font-size: 13px;
  }
  .user-manage {
    min-height: 44px;
  }
  .user-status {
    font-size: 12px;
  }
  .users-footer {
    line-height: 1.6;
    font-size: 12px;
  }
  .users-heading p {
    font-size: 13px;
    line-height: 1.5;
  }
  .welcome {
    padding: 16px;
    align-items: center;
  }
  .welcome-card {
    width: 100%;
    min-width: 0;
    max-width: 480px;
  }
  .welcome-card .brand {
    margin-bottom: 30px;
  }
  .welcome-card h1 {
    font-size: clamp(30px, 8vw, 40px);
    letter-spacing: -1px;
    line-height: 1.15;
    overflow-wrap: anywhere;
  }
  .auth-form {
    min-width: 0;
  }
  .auth-form input,
  .auth-form textarea {
    font-size: 16px;
    min-height: 48px;
  }
  .auth-form small {
    font-size: 12px;
    line-height: 1.6;
  }
  .auth-form label:has(input[type='checkbox']) {
    min-height: 44px;
  }
  .auth-form input[type='checkbox'] {
    min-height: 20px;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
  }
  .toolbar {
    flex-wrap: wrap;
  }
  .toolbar > .lf-select {
    width: 100%;
    flex-basis: 100%;
  }
  .search-box input {
    font-size: 16px;
  }
  .tabs {
    overflow: auto;
    justify-content: flex-start;
    max-width: 100%;
    padding-bottom: 3px;
  }
  .tabs button {
    flex: 0 0 auto;
    font-size: 13px;
    min-height: 44px;
    white-space: nowrap;
  }
  .week-control {
    flex-wrap: wrap;
    gap: 8px;
  }
  .week-control .button {
    min-height: 44px;
    font-size: 12px;
  }
  .week-control > strong {
    font-size: 13px;
  }
  .week-strip {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
  .week-strip span {
    font-size: 11px;
  }
  .week-strip strong {
    font-size: 20px;
  }
  .lesson-row {
    flex-wrap: wrap;
  }
  .lesson-info {
    min-width: 0;
    flex: 1;
  }
  .lesson-info strong {
    font-size: 14px;
    overflow-wrap: anywhere;
  }
  .lesson-info span {
    font-size: 12px;
    line-height: 1.5;
  }
  .lesson-time strong {
    font-size: 14px;
  }
  .lesson-time span {
    font-size: 11px;
  }
  .lesson-row > .badge {
    font-size: 11px;
  }
  .panel-heading h2 {
    font-size: 16px;
  }
  .panel-heading .text-button {
    font-size: 12px;
  }
  .person-cell {
    min-width: 0;
  }
  .person-cell strong {
    overflow-wrap: anywhere;
  }
  .student-table .cell-groups,
  .student-table > span:nth-child(3) {
    font-size: 12px;
    padding-left: 0;
  }
  .report-table.table-head {
    display: none;
  }
  .report-table.table-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 16px;
    margin-bottom: 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
  }
  .report-table .person-cell {
    grid-column: 1/-1;
  }
  .report-table .person-cell strong {
    font-size: 14px;
  }
  .report-table .avatar {
    width: 34px;
    height: 34px;
    font-size: 12px;
  }
  .report-table > span {
    font-size: 14px;
  }
  .report-table > span[data-label]:before {
    content: attr(data-label);
    display: block;
    font-size: 11px;
    color: var(--muted);
    margin-bottom: 6px;
  }
  .report-table .block {
    font-size: 12px;
  }
  .report-table > :last-child {
    display: block;
  }
  .attendance-row {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }
  .attendance-row strong {
    font-size: 14px;
  }
  .attendance-row .lf-select {
    grid-column: 1/-1;
    width: 100%;
  }
  .member-row,
  .result-row,
  .roster-row {
    flex-wrap: wrap;
    gap: 12px;
  }
  .member-row > .text-button {
    font-size: 12px;
    min-height: 44px;
  }
  .member-row > div {
    min-width: 0;
  }
  .notification-row strong,
  .result-row strong {
    font-size: 14px;
  }
  .notification-row p,
  .result-row small {
    font-size: 12px;
    line-height: 1.6;
  }
  .prose {
    font-size: 14px;
    overflow-wrap: anywhere;
  }
  .prose img {
    max-width: 100%;
    height: auto;
  }
  .prose pre {
    overflow: auto;
    max-width: 100%;
  }
  .bottom-actions {
    flex-wrap: wrap;
  }
  .bottom-actions > .button {
    font-size: 13px;
    min-height: 44px;
  }
  .modal-overlay {
    padding: 0;
    align-items: flex-end;
  }
  .modal {
    width: 100%;
    max-height: 94dvh;
    border-radius: 20px 20px 0 0;
    margin: 0;
  }
  .modal-header {
    padding: 18px 16px;
  }
  .modal-body {
    padding: 18px 16px;
  }
  .modal-footer {
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  }
  .modal-footer .button {
    min-height: 46px;
    flex: 1;
  }
  .modal-header .icon-button {
    min-height: 44px;
    min-width: 44px;
  }
  .modal .lf-select-trigger {
    min-height: 48px;
  }
  .support-messages {
    max-height: 34dvh;
  }
  .support-message {
    max-width: 96%;
    font-size: 14px;
  }
  .account-role-edit .button,
  .permission-row > .button {
    width: 100%;
    min-height: 44px;
  }
  .permission-row p,
  .account-control-section p {
    font-size: 13px;
  }
  .toast {
    left: 12px;
    right: 12px;
    bottom: calc(76px + env(safe-area-inset-bottom));
    transform: none;
    min-width: 0;
    width: auto;
    font-size: 13px;
  }
  .onboarding h1 {
    font-size: 32px;
    line-height: 1.2;
  }
  .onboarding-card p {
    font-size: 13px;
  }
  .onboarding-card {
    min-width: 0;
  }
}
@media (max-width: 360px) {
  .users-filter {
    width: 100%;
    flex-basis: 100%;
  }
  .user-row {
    grid-template-columns: 1fr;
  }
  .user-manage,
  .user-protected {
    justify-self: start;
  }
  .user-identity,
  .user-roles {
    grid-column: auto;
  }
  .owner-cabinet .brand {
    font-size: 17px;
  }
}

/* Authentication: an introductory panel and clearly separated account actions. */
:root .welcome.auth-page {
  background: radial-gradient(ellipse at 10% 20%, var(--canvas-glow), transparent 60%), var(--bg);
  gap: clamp(32px, 6vw, 100px);
  padding: 48px 32px;
}
.auth-intro {
  max-width: 430px;
  flex: 1;
}
.auth-kicker {
  color: var(--blue-ink);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 1.6px;
}
.auth-intro h2 {
  font-size: clamp(36px, 4vw, 54px);
  line-height: 1.15;
  letter-spacing: -1.8px;
  margin: 24px 0;
}
.auth-intro h2 span {
  color: var(--blue-ink);
}
.auth-intro > p {
  color: var(--muted);
  max-width: 340px;
  font-size: 15px;
}
.auth-preview {
  margin-top: 40px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--card-shadow);
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 18px;
}
.auth-preview-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--blue-soft);
  color: var(--blue-ink);
  border-radius: 15px;
}
.auth-preview strong,
.auth-preview span {
  display: block;
}
.auth-preview strong {
  font-size: 14px;
  margin: 3px 0 7px;
}
.auth-preview span,
.auth-preview-caption {
  color: var(--muted);
  font-size: 12px;
}
.auth-preview-progress {
  display: flex;
  grid-column: 1 / -1;
  gap: 7px;
}
.auth-preview-progress i {
  height: 6px;
  flex: 1;
  border-radius: 6px;
  background: var(--blue);
}
.auth-preview-progress i:last-child {
  background: var(--blue-soft);
}
.auth-preview-caption {
  grid-column: 1 / -1;
  display: flex;
  gap: 8px;
  align-items: center;
}
:root .welcome-card.auth-card {
  width: 100%;
  max-width: 490px;
  min-width: 0;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 16px 60px #10182b12;
}
.auth-card .brand {
  margin-bottom: 30px;
  font-size: 22px;
}
.auth-card .brand .icon-button {
  margin-left: auto;
}
.auth-card h1 {
  font-size: 34px;
  letter-spacing: -1.2px;
  margin: 0 0 12px;
  line-height: 1.2;
}
.auth-card > p {
  font-size: 13px;
  line-height: 1.7;
}
.auth-card .auth-form {
  margin: 24px 0 0;
}
.auth-card .auth-form small {
  color: var(--muted);
  line-height: 1.6;
}
.auth-alternatives {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.auth-alternative {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-muted);
  color: var(--blue-ink);
  text-align: left;
}
.auth-alternative span {
  flex: 1;
}
.auth-alternative small,
.auth-alternative strong {
  display: block;
}
.auth-alternative small {
  color: var(--muted);
  font-weight: 500;
  margin-bottom: 5px;
}
.auth-alternative strong {
  font-size: 13px;
}
.auth-alternative:hover {
  border-color: var(--blue);
}
.auth-recovery {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
  color: var(--muted);
}
.auth-recovery .text-button {
  font-size: 12px;
  min-height: 40px;
  white-space: normal;
  text-align: left;
}
.auth-card > .text-button {
  display: flex;
  margin-top: 16px;
}
@media (max-width: 900px) {
  .auth-intro {
    display: none;
  }
}
@media (max-width: 600px) {
  :root .welcome.auth-page {
    padding: 24px 14px;
  }
  :root .welcome-card.auth-card {
    padding: 24px 20px;
    border-radius: 22px;
  }
  .auth-card h1 {
    font-size: 30px;
  }
  .auth-card .brand {
    margin-bottom: 26px;
  }
}
:root:not([data-theme='dark'])
  :is(
    .auth-form input:not([type='checkbox']),
    .field input:not([type='checkbox']),
    .field textarea,
    .field select,
    .lf-select-trigger,
    .search-box
  ) {
  background: #dce2e2;
  border: 1px solid #9aaeb3;
  box-shadow: inset 0 1px 2px #30454e0a;
}
:root:not([data-theme='dark'])
  :is(
    .auth-form input:not([type='checkbox']),
    .field input:not([type='checkbox']),
    .field textarea,
    .field select,
    .lf-select-trigger
  ):focus-visible {
  background: #e6ebea;
  border-color: #526b78;
  outline: 2px solid #526b7840;
  outline-offset: 2px;
}
:root:not([data-theme='dark'])
  :is(.auth-card, .auth-preview, .panel, .stat-card, .group-card, .course-card) {
  border-color: #b6c0c1;
  box-shadow: 0 4px 16px #344b5310;
}
@media (prefers-reduced-motion: no-preference) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 360ms;
    animation-timing-function: ease-in-out;
  }
  ::view-transition-group(root) {
    animation-duration: 360ms;
  }
  .auth-form {
    animation: veil-enter 240ms ease-out both;
  }
  .modal {
    animation-duration: 280ms;
  }
  .lf-select-popup[data-state='open'] {
    transform-origin: var(--radix-select-content-transform-origin, top center);
    animation: window-enter 200ms cubic-bezier(0.2, 0.75, 0.25, 1);
  }
  .lf-select-popup[data-state='closed'] {
    animation: veil-exit 120ms ease-in;
  }
  .nav-item,
  .auth-alternative,
  .lf-select-option,
  .text-button {
    transition:
      background-color 180ms ease,
      color 180ms ease,
      border-color 180ms ease,
      box-shadow 180ms ease;
  }
  .group-card,
  .course-card,
  .assignment-card,
  .onboarding-card {
    transition:
      transform 220ms ease,
      border-color 220ms ease,
      box-shadow 220ms ease;
  }
  .theme-toggle svg {
    animation: theme-icon-enter 280ms ease-out;
  }
  .sidebar {
    transition: transform 280ms cubic-bezier(0.2, 0.75, 0.25, 1);
  }
}
@keyframes theme-icon-enter {
  from {
    opacity: 0;
    transform: rotate(-35deg) scale(0.8);
  }
  to {
    opacity: 1;
    transform: rotate(0) scale(1);
  }
}
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root),
  ::view-transition-group(root) {
    animation: none !important;
  }
}
:root {
  --field-bg: #dce2e2;
  --field-border: #9aaeb3;
}
:root[data-theme='dark'] {
  --field-bg: #222b3b;
  --field-border: #46556d;
}
:root[data-palette='dusk'] {
  --bg: #202833;
  --canvas-glow: #627781;
  --surface: #26303f;
  --surface-muted: #323f4d;
  --text: #edf1f5;
  --muted: #becbd3;
  --text-secondary: #cad5dc;
  --line: #566677;
  --topbar-surface: #26303f;
  --blue: #acc8e2;
  --blue-ink: #bfd8f0;
  --blue-soft: #3a5066;
  --accent-start: #476b8b;
  --accent-end: #566f8c;
  --field-bg: #354453;
  --field-border: #788b9c;
}
:root[data-palette='forest'] {
  --bg: #1d2b2a;
  --canvas-glow: #607c70;
  --surface: #263a35;
  --surface-muted: #344b43;
  --text: #edf3eb;
  --muted: #bacfc3;
  --text-secondary: #c8d9ce;
  --line: #506e61;
  --topbar-surface: #263a35;
  --blue: #add7bd;
  --blue-ink: #c0e5cb;
  --blue-soft: #3b584a;
  --accent-start: #456e59;
  --accent-end: #526c59;
  --field-bg: #354d43;
  --field-border: #769584;
}
:root[data-theme]
  :is(
    .auth-form input:not([type='checkbox']),
    .field input:not([type='checkbox']),
    .field textarea,
    .field select,
    .lf-select-trigger,
    .search-box
  ) {
  background: var(--field-bg);
  color: var(--text);
  border-color: var(--field-border);
}
:root[data-theme] :is(.auth-form input, .field input, .field textarea, .field select):focus {
  background: var(--field-bg);
  border-color: var(--blue);
}
:root[data-theme]
  :is(
    .sidebar,
    .welcome-card,
    .auth-card,
    .auth-preview,
    .panel,
    .stat-card,
    .group-card,
    .course-card,
    .modal
  ) {
  border-color: var(--line);
}
:root[data-theme] .sidebar,
:root[data-theme] .welcome-card {
  background: var(--surface);
}
:root[data-theme] .topbar {
  background: var(--topbar-surface);
}
:root[data-theme] .modal-footer {
  background: var(--surface-muted);
}
:root[data-theme] .button.primary,
:root[data-theme] .brand-mark {
  background: linear-gradient(115deg, var(--accent-start), var(--accent-end));
  color: white;
}
:root.theme-changing,
:root.theme-changing *,
:root.theme-changing *::before,
:root.theme-changing *::after {
  transition: none !important;
}
.theme-picker {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
  color: var(--muted);
}
.theme-picker .lf-select {
  width: 112px;
}
.theme-picker .lf-select-trigger {
  min-height: 36px;
  padding: 7px 9px;
  font-size: 11px;
  border-radius: 10px;
}
.auth-card .brand {
  flex-wrap: wrap;
  gap: 8px;
}
.auth-card .brand .theme-picker {
  margin-left: auto;
}
@media (max-width: 420px) {
  .auth-card .brand .theme-picker {
    flex-basis: 100%;
    margin-left: 0;
  }
  .theme-picker > svg {
    display: none;
  }
}
:root[data-theme] .button.primary:hover:not(:disabled),
:root[data-theme] .button.primary:focus-visible {
  background: linear-gradient(115deg, var(--accent-end), var(--accent-start));
  box-shadow: 0 3px 12px #00000018;
}
:root[data-theme] input[type='checkbox'],
:root[data-theme] input[type='radio'] {
  accent-color: var(--accent-start);
}

/* Form interaction and browser autofill follow the selected palette. */
:root[data-theme] :is(.auth-form, .field) :is(input, textarea, select):hover:not(:disabled),
:root[data-theme] .lf-select-trigger:hover:not(:disabled) {
  border-color: var(--blue);
}
:root[data-theme] :is(.auth-form, .field) :is(input, textarea, select):focus-visible {
  background: var(--field-bg);
  color: var(--text);
  border-color: var(--blue);
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  box-shadow: none;
}
:root[data-theme] input:autofill {
  background: var(--field-bg) !important;
  color: var(--text) !important;
  box-shadow: inset 0 0 0 1000px var(--field-bg) !important;
  caret-color: var(--text);
}
:root[data-theme] input:-webkit-autofill,
:root[data-theme] input:-webkit-autofill:hover,
:root[data-theme] input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--text) !important;
  -webkit-box-shadow: inset 0 0 0 1000px var(--field-bg) !important;
  caret-color: var(--text);
}
:root[data-palette='coral'] {
  --bg: #2c2020;
  --canvas-glow: #86504b;
  --surface: #392929;
  --surface-muted: #493333;
  --text: #fff1ed;
  --muted: #d9bcb6;
  --text-secondary: #ead0ca;
  --line: #76504a;
  --topbar-surface: #392929;
  --blue: #ff9c88;
  --blue-ink: #ffb5a3;
  --blue-soft: #603c35;
  --accent-start: #b94431;
  --accent-end: #d75b40;
  --field-bg: #503833;
  --field-border: #a2756a;
}
:root[data-theme] .focus-card {
  background: color-mix(in srgb, var(--blue-soft) 60%, var(--surface));
  border: 1px solid var(--line);
  color: var(--text);
}
:root[data-theme] .focus-card :is(h2, p, .eyebrow) {
  color: var(--text);
}
:root[data-theme] .focus-symbol {
  color: var(--blue);
}
:root[data-theme] .focus-card .button {
  background: var(--surface);
  color: var(--blue-ink);
  border-color: var(--line);
}
:root[data-theme] .focus-card .button:hover {
  background: var(--blue-soft);
}
.tabs {
  position: relative;
  isolation: isolate;
}
.tabs button {
  position: relative;
  z-index: 1;
}
.tabs button.active {
  background: transparent;
  box-shadow: none;
  color: var(--blue-ink);
}
.tabs-indicator {
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  border-radius: 5px;
  background: var(--surface);
  pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
  .tabs-indicator {
    transition:
      transform 280ms cubic-bezier(0.2, 0.75, 0.25, 1),
      width 280ms ease;
  }
  .tabs button {
    transition: color 220ms ease;
  }
  .filter-results {
    animation: window-enter 260ms ease-out both;
  }
  .nav-item::before {
    transition:
      opacity 240ms ease,
      transform 240ms ease;
  }
}

/* A single crossfade covers the complete workspace as well as the sign-in screen. */
@media (prefers-reduced-motion: no-preference) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 600ms;
    animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  }
  ::view-transition-group(root) {
    animation-duration: 600ms;
  }
}
@media (prefers-reduced-motion: no-preference) {
  .modal-overlay {
    animation: veil-enter 300ms ease-out both;
  }
  .modal {
    animation: window-enter 360ms cubic-bezier(0.2, 0.75, 0.25, 1) both;
  }
  .modal-overlay.is-closing {
    animation: veil-exit 280ms ease-in-out both;
  }
  .modal-overlay.is-closing .modal {
    animation: window-exit 280ms ease-in-out both;
  }
  .lf-select-popup[data-state='open'] {
    animation-duration: 260ms;
  }
  .lf-select-popup[data-state='closed'] {
    animation-duration: 200ms;
  }
}
.modal-overlay {
  animation: veil-enter 300ms ease-out both !important;
}
.modal {
  animation: window-enter 360ms cubic-bezier(0.2, 0.75, 0.25, 1) both !important;
}
.modal-overlay.is-closing {
  animation: veil-exit 280ms ease-in-out both !important;
}
.modal-overlay.is-closing .modal {
  animation: window-exit 280ms ease-in-out both !important;
}
.lf-select-popup[data-state='open'] {
  animation: veil-enter 260ms ease-out both !important;
}
.lf-select-popup[data-state='closed'] {
  animation: veil-exit 200ms ease-in both !important;
}
.tabs-indicator {
  transition:
    transform 280ms ease,
    width 280ms ease !important;
}
.filter-results {
  animation: veil-enter 300ms ease-out both !important;
}
::selection {
  background-color: var(--blue);
  color: var(--bg);
  text-shadow: none;
}
::-moz-selection {
  background-color: var(--blue);
  color: var(--bg);
  text-shadow: none;
}

.student-next-step {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px;
  margin-bottom: 24px;
  border-radius: var(--radius);
  background: var(--blue-soft);
  border: 1px solid var(--line);
  color: var(--text);
}
.student-next-step h2 {
  margin: 10px 0 6px;
  font-size: 21px;
}
.student-next-step p {
  margin: 0;
  color: var(--text-secondary);
}
.student-next-step .button {
  flex-shrink: 0;
}
.mobile-quick-nav {
  display: none;
}
@media (max-width: 800px) {
  .student-next-step {
    align-items: stretch;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
  }
  .mobile-quick-nav {
    display: flex;
    gap: 8px;
    padding: 10px 16px;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
  }
  .mobile-quick-nav button {
    flex: 1;
    padding: 11px 8px;
    border-radius: 10px;
    font-weight: 700;
    background: var(--surface-muted);
  }
  .mobile-quick-nav button.selected {
    background: var(--blue-soft);
    color: var(--blue-ink);
  }
}

/* Loading indicator */
.brand-loading-screen {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  background: radial-gradient(ellipse at 50% 45%, var(--blue-soft), transparent 65%), var(--bg);
  padding: 24px;
}
.brand-loading {
  --loader-cycle: 2.6s;
  width: min(100%, 380px);
  text-align: center;
  color: var(--text);
}
.raze-scene {
  position: relative;
  overflow: hidden;
  height: 260px;
}
.raze-ground {
  position: absolute;
  inset: 45% 12% 0;
  background: radial-gradient(
    ellipse,
    color-mix(in srgb, var(--blue) 20%, transparent),
    transparent 65%
  );
}
.loader-emblem {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  font-weight: 800;
  color: #fff;
  box-shadow: 0 0 40px color-mix(in srgb, var(--blue) 25%, transparent);
  top: 10px;
  width: 40px;
  height: 40px;
  font-size: 26px;
  border-radius: 12px;
}
.loader-emblem span {
  position: absolute;
  width: 18px;
  height: 9px;
  background: var(--blue);
  right: 8px;
  bottom: 10px;
  border-radius: 2px;
  transform: rotate(-28deg);
}
.raze-burst {
  position: absolute;
  left: 50%;
  width: 150px;
  height: 80px;
  margin-left: -75px;
  color: var(--blue);
  --burst-delay: 0s;
}
.raze-burst i {
  position: absolute;
  left: 10%;
  right: 10%;
  top: 4px;
  height: 34px;
  border: 2px solid currentColor;
  border-radius: 50%;
  box-shadow:
    0 0 14px currentColor,
    inset 0 0 12px color-mix(in srgb, var(--blue) 25%, transparent);
  animation: raze-ring var(--loader-cycle) var(--burst-delay) infinite both !important;
}
.raze-burst b {
  position: absolute;
  left: 35%;
  right: 35%;
  bottom: 42px;
  clip-path: polygon(0 100%, 20% 40%, 40% 75%, 53% 0, 72% 70%, 85% 35%, 100% 100%);
  transform-origin: bottom;
  animation: raze-flare var(--loader-cycle) var(--burst-delay) infinite both !important;
  height: 95px;
  background: linear-gradient(
    to top,
    var(--blue),
    color-mix(in srgb, var(--blue) 65%, transparent),
    transparent
  );
}
.raze-burst span {
  position: absolute;
  left: 49%;
  bottom: 43px;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: currentColor;
  box-shadow:
    -25px -15px currentColor,
    22px -25px currentColor,
    -12px -38px currentColor,
    33px -5px currentColor;
  animation: raze-sparks var(--loader-cycle) var(--burst-delay) infinite both !important;
}
.loader-copy {
  display: grid;
  gap: 9px;
}
.loader-copy strong {
  font-size: 24px;
  letter-spacing: -0.6px;
}
.loader-copy > span {
  font-size: 13px;
  color: var(--muted);
}
@keyframes raze-ring {
  0%,
  8% {
    opacity: 0;
    transform: scale(0.2);
  }
  15% {
    opacity: 0.85;
  }
  40%,
  100% {
    opacity: 0;
    transform: scale(1.25);
  }
}
@keyframes raze-flare {
  0%,
  8% {
    opacity: 0;
    transform: scaleY(0.1);
  }
  17% {
    opacity: 0.7;
    transform: scaleY(1);
  }
  32%,
  100% {
    opacity: 0;
    transform: scaleY(0.3);
  }
}
@keyframes raze-sparks {
  0%,
  10% {
    opacity: 0;
    transform: translateY(0);
  }
  18% {
    opacity: 0.8;
  }
  40%,
  100% {
    opacity: 0;
    transform: translateY(-25px);
  }
}
.brand-loading-compact {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  width: 280px;
  max-width: calc(100vw - 32px);
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: 0 10px 35px #00000025;
  z-index: 90;
  pointer-events: none;
}
.brand-loading-compact .raze-scene {
  flex-shrink: 0;
  height: 65px;
  width: 80px;
}
.brand-loading-compact .loader-emblem {
  width: 24px;
  height: 24px;
  font-size: 17px;
  top: 0;
  border-radius: 7px;
}
.brand-loading-compact .loader-emblem span {
  width: 8px;
  height: 4px;
  right: 3px;
  bottom: 4px;
}
.brand-loading-compact .raze-burst {
  width: 60px;
  height: 30px;
  margin-left: -30px;
}
.brand-loading-compact .raze-burst i {
  height: 12px;
}
.brand-loading-compact .raze-burst b {
  bottom: 17px;
  height: 32px;
}
.brand-loading-compact .raze-burst span {
  bottom: 18px;
}
.brand-loading-compact .loader-copy {
  text-align: left;
  gap: 3px;
}
.brand-loading-compact .loader-copy strong {
  font-size: 15px;
}
.brand-loading-compact .loader-copy > span {
  font-size: 11px;
}
.raze-caster {
  position: absolute;
  width: 94px;
  height: 130px;
  left: 14px;
  top: 102px;
  color: var(--blue);
  filter: drop-shadow(0 0 8px var(--blue));
  overflow: visible;
}
.caster-body {
  transform-origin: 52px 120px;
  animation: caster-recoil var(--loader-cycle) infinite !important;
}
.caster-arm {
  transform-origin: 68px 70px;
  animation: caster-cast var(--loader-cycle) infinite !important;
}
.raze-burst.raze-near {
  left: 43%;
  top: 197px;
  transform: scale(0.75);
  --burst-delay: 0s;
}
.raze-burst.raze-middle {
  left: 63%;
  top: 166px;
  transform: scale(0.9);
  --burst-delay: 0.42s;
}
.raze-burst.raze-far {
  left: 80%;
  top: 133px;
  transform: scale(1);
  --burst-delay: 0.84s;
}
@keyframes caster-cast {
  0%,
  16%,
  32%,
  58%,
  100% {
    transform: rotate(-18deg);
  }
  8%,
  24%,
  40% {
    transform: rotate(48deg) translateY(7px);
  }
  12%,
  28%,
  44% {
    transform: rotate(30deg);
  }
}
@keyframes caster-recoil {
  0%,
  16%,
  32%,
  58%,
  100% {
    transform: rotate(-3deg);
  }
  8%,
  24%,
  40% {
    transform: rotate(7deg) translateY(3px);
  }
}
.brand-loading-compact .raze-caster {
  width: 25px;
  height: 38px;
  left: 0;
  top: 26px;
}
.brand-loading-compact .raze-burst.raze-near {
  left: 40%;
  top: 49px;
  transform: scale(0.45);
}
.brand-loading-compact .raze-burst.raze-middle {
  left: 64%;
  top: 40px;
  transform: scale(0.5);
}
.brand-loading-compact .raze-burst.raze-far {
  left: 85%;
  top: 30px;
  transform: scale(0.55);
}

.password-field {
  display: block;
  position: relative;
}
.auth-form .password-field input {
  padding-right: 48px;
}
.password-toggle {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  color: var(--muted);
}
.password-toggle:hover {
  background: var(--blue-soft);
  color: var(--blue-ink);
}
.support-message.assistant {
  background: var(--blue-soft);
}