/*
THESIS: A precise English-learning operations ledger, not a generic cheerful school dashboard.
OWN-WORLD: White canvas, Trust Blue navigation, Growth Green signals, rectangular data rails, Lexend English.
STORY: Sign in securely, then operate cooperation points, teachers, and classes through one truthful governance hierarchy.
FIRST VIEWPORT: A narrow blue identity rail frames a dense cooperation-point ledger; status rails make service interruption visible before any action.
FORM: Operate-mode split ledger, extending the established Agora world; no replacement visual system or concept seed.
*/

@font-face {
  font-family: "Lexend";
  src: url("./assets/Lexend-VariableFont_wght.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --trust-blue: #124159;
  --thought-night: #294855;
  --growth-green: #69c3c0;
  --mature-green: #56aea8;
  --clear-blue: #457eb8;
  --spark-yellow: #f6cd5d;
  --spark-red: #e9625b;
  --sunlight: #f5e2d5;
  --mist: #efeded;
  --silver: #bcbcbc;
  --graphite: #686a69;
  --white: #ffffff;
  --ink: #173746;
  --line: #dfe5e7;
  --soft-blue: #edf5f7;
  --focus: #457eb8;
  --radius: 14px;
  --sidebar: 248px;
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--ink);
  background: var(--white);
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--white);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--white);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 55%, white);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: var(--white);
  background: var(--trust-blue);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.english,
.brand-word,
.code-value,
.data-code,
.eyebrow,
.dialog-kicker {
  font-family: "Lexend", system-ui, sans-serif;
}

.auth-layout {
  display: grid;
  grid-template-columns: minmax(310px, 38vw) minmax(0, 1fr);
  min-height: 100vh;
}

.auth-brand {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
  min-height: 100vh;
  padding: clamp(28px, 5vw, 72px);
  color: var(--white);
  background: var(--trust-blue);
}

.auth-brand::after {
  content: "";
  position: absolute;
  right: -82px;
  bottom: 12%;
  width: 250px;
  height: 250px;
  border: 42px solid var(--growth-green);
  border-radius: 50%;
  opacity: 0.92;
}

.brand-logo {
  position: relative;
  z-index: 1;
  width: 154px;
  height: auto;
}

.brand-statement {
  position: relative;
  z-index: 1;
  max-width: 420px;
  margin: 80px 0;
}

.eyebrow,
.dialog-kicker {
  margin: 0 0 14px;
  color: var(--mature-green);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.auth-brand .eyebrow {
  color: #aee4e1;
}

.brand-statement h1 {
  max-width: 10ch;
  margin: 0;
  font-family: "Lexend", system-ui, sans-serif;
  font-size: clamp(2.5rem, 5vw, 5.4rem);
  font-weight: 620;
  line-height: 0.95;
  letter-spacing: -0.035em;
}

.brand-statement p {
  max-width: 32ch;
  margin: 28px 0 0;
  color: #d7e5e9;
  font-size: 1rem;
  line-height: 1.75;
}

.signal-legend {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: #d7e5e9;
  font-size: 0.82rem;
}

.signal-legend li,
.service-state,
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.signal-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--growth-green);
}

.signal-dot.yellow {
  background: var(--spark-yellow);
}

.signal-dot.red {
  background: var(--spark-red);
}

.auth-main {
  display: grid;
  place-items: center;
  padding: 40px clamp(24px, 8vw, 120px);
}

.auth-panel {
  width: min(100%, 460px);
}

.auth-panel h2 {
  margin: 0;
  color: var(--trust-blue);
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 690;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.auth-intro {
  max-width: 40ch;
  margin: 16px 0 34px;
  color: var(--graphite);
  line-height: 1.7;
}

.form-stack {
  display: grid;
  gap: 20px;
}

.field {
  display: grid;
  gap: 8px;
}

.field label {
  color: var(--thought-night);
  font-size: 0.9rem;
  font-weight: 650;
}

.field-hint {
  margin: 0;
  color: var(--graphite);
  font-size: 0.8rem;
  line-height: 1.55;
}

.login-limit-hint {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 2px 0 0;
  border: 1px solid color-mix(in srgb, var(--spark-yellow) 62%, white);
  border-radius: 10px;
  padding: 9px 11px;
  color: var(--thought-night);
  background: color-mix(in srgb, var(--spark-yellow) 18%, white);
  font-size: 0.8rem;
  line-height: 1.45;
}

.login-limit-count {
  display: inline-grid;
  flex: 0 0 28px;
  place-items: center;
  min-width: 28px;
  min-height: 28px;
  border-radius: 8px;
  color: var(--trust-blue);
  background: var(--spark-yellow);
  font-family: "Lexend", sans-serif;
  font-weight: 720;
  line-height: 1;
}

.input,
.select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--silver);
  border-radius: 10px;
  padding: 0 14px;
  color: var(--ink);
  background: var(--white);
  transition:
    border-color 160ms ease-out,
    box-shadow 160ms ease-out;
}

.input:hover,
.select:hover {
  border-color: var(--clear-blue);
}

.input:focus,
.select:focus {
  border-color: var(--clear-blue);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--clear-blue) 16%, transparent);
  outline: none;
}

.input[aria-invalid="true"] {
  border-color: var(--spark-red);
}

.form-error {
  min-height: 22px;
  margin: 0;
  color: #a33732;
  font-size: 0.84rem;
  line-height: 1.5;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0 18px;
  font-weight: 680;
  transition:
    transform 120ms ease-out,
    background 160ms ease-out,
    border-color 160ms ease-out;
}

.button:active:not(:disabled) {
  transform: translateY(1px);
}

.button-primary {
  color: var(--white);
  background: var(--trust-blue);
}

.button-primary:hover:not(:disabled) {
  background: var(--thought-night);
}

.button-secondary {
  border-color: var(--silver);
  color: var(--trust-blue);
  background: var(--white);
}

.button-secondary:hover:not(:disabled) {
  border-color: var(--trust-blue);
  background: var(--soft-blue);
}

.button-danger {
  color: var(--white);
  background: #b7453f;
}

.button-danger:hover:not(:disabled) {
  background: #96342f;
}

.button-quiet {
  min-height: 36px;
  padding: 0 10px;
  color: var(--clear-blue);
  background: transparent;
}

.button-quiet:hover:not(:disabled) {
  background: var(--soft-blue);
}

.button-quiet.danger {
  color: #a33732;
}

.auth-submit {
  width: 100%;
  min-height: 50px;
  margin-top: 4px;
}

.security-note {
  display: flex;
  gap: 12px;
  margin: 26px 0 0;
  padding: 15px 0 0;
  border-top: 1px solid var(--line);
  color: var(--graphite);
  font-size: 0.8rem;
  line-height: 1.55;
}

.admin-shell {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 28px 22px 22px;
  color: var(--white);
  background: var(--trust-blue);
}

.sidebar .brand-logo {
  width: 132px;
  margin: 2px 10px 38px;
}

.nav-label {
  margin: 0 10px 10px;
  color: #9fc2ce;
  font-size: 0.72rem;
}

.nav-list {
  display: grid;
  gap: 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  border: 0;
  border-radius: 10px;
  padding: 0 12px;
  color: #d8e6ea;
  text-align: left;
  background: transparent;
}

.nav-item.active {
  color: var(--trust-blue);
  background: var(--growth-green);
}

.nav-item:disabled {
  color: #83a6b2;
  opacity: 1;
}

.nav-mark {
  width: 10px;
  height: 10px;
  border: 2px solid currentColor;
  border-radius: 50%;
}

.sidebar-foot {
  display: grid;
  gap: 18px;
  margin-top: auto;
  padding-top: 28px;
}

.admin-identity {
  display: grid;
  gap: 4px;
  padding: 14px 12px;
  border-top: 1px solid #356075;
  border-bottom: 1px solid #356075;
}

.admin-identity strong {
  font-family: "Lexend", system-ui, sans-serif;
  font-size: 0.9rem;
}

.admin-identity span {
  color: #a9c4cd;
  font-size: 0.76rem;
}

.sidebar-logout {
  justify-content: flex-start;
  color: var(--white);
}

.workspace {
  min-width: 0;
  background: var(--white);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  border-bottom: 1px solid var(--line);
  padding: 0 clamp(22px, 4vw, 56px);
}

.breadcrumb {
  color: var(--graphite);
  font-size: 0.82rem;
}

.service-state {
  color: var(--graphite);
  font-size: 0.8rem;
}

.content {
  width: min(100%, 1480px);
  margin: 0 auto;
  padding: 42px clamp(22px, 4vw, 56px) 72px;
}

.page-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 34px;
}

.page-heading h1 {
  margin: 0;
  color: var(--trust-blue);
  font-size: clamp(2rem, 3vw, 3.35rem);
  line-height: 1;
  letter-spacing: -0.035em;
}

.page-heading p {
  max-width: 62ch;
  margin: 12px 0 0;
  color: var(--graphite);
  line-height: 1.65;
}

.recovery-heading {
  align-items: center;
}

.recovery-rule {
  display: grid;
  grid-template-columns: 72px auto;
  gap: 5px 14px;
  align-items: center;
  min-width: 250px;
  color: var(--graphite);
}

.recovery-rule-line {
  grid-row: 1 / 3;
  width: 72px;
  height: 8px;
  border-right: 48px solid var(--spark-yellow);
  border-radius: 4px;
  background: var(--growth-green);
}

.recovery-rule strong {
  color: var(--trust-blue);
  font-size: 1.25rem;
  line-height: 1;
}

.recovery-rule span:last-child {
  font-size: 0.76rem;
}

.recovery-table {
  min-width: 900px;
}

.recovery-table-wrap {
  border-top: 1px solid var(--line);
}

.recovery-days {
  display: inline-block;
  min-width: 2.2ch;
  color: var(--trust-blue);
  font-size: 1.05rem;
  font-weight: 740;
  text-align: right;
}

.recovery-ledgers {
  display: grid;
  gap: 26px;
}

.rebind-ledger {
  border: 1px solid rgba(18, 65, 89, 0.12);
  border-radius: 22px;
  padding: 22px;
  background: linear-gradient(135deg, rgba(105, 195, 192, 0.1), rgba(255, 255, 255, 0.96) 44%);
}

.ledger-section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 18px;
}

.ledger-section-head h2 {
  margin: 4px 0 6px;
  color: var(--trust-blue);
  font-size: 1.35rem;
}

.ledger-section-head p:not(.eyebrow) {
  margin: 0;
  color: var(--quiet-graphite);
  line-height: 1.55;
}

.ledger-section-head > strong {
  display: grid;
  min-width: 54px;
  min-height: 54px;
  place-items: center;
  border-radius: 18px;
  color: var(--trust-blue);
  background: rgba(105, 195, 192, 0.2);
  font-size: 1.45rem;
}

.ledger-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--quiet-graphite);
  font-size: 0.82rem;
}

.ledger-divider::after {
  height: 1px;
  flex: 1;
  content: "";
  background: rgba(18, 65, 89, 0.12);
}

.empty-state.compact {
  min-height: 140px;
}

.audit-request-id {
  font-family: Lexend, ui-monospace, monospace;
  font-size: 0.76rem;
  overflow-wrap: anywhere;
}

.one-time-code-card {
  display: grid;
  gap: 14px;
  justify-items: center;
  margin: 12px 0 20px;
  border-radius: 22px;
  padding: 28px 18px;
  color: var(--trust-blue);
  background: rgba(105, 195, 192, 0.16);
}

.one-time-code-card > span {
  color: var(--quiet-graphite);
}

.one-time-code-card > strong {
  letter-spacing: 0.24em;
  font-size: clamp(2.4rem, 5vw, 3.8rem);
}

.rebind-code-guidance,
.guardian-rebind-empty {
  border-left: 4px solid var(--growth-green);
  border-radius: 0 14px 14px 0;
  padding: 16px 18px;
  background: rgba(248, 236, 195, 0.48);
}

.rebind-code-guidance p,
.guardian-rebind-empty p {
  margin-bottom: 0;
  color: var(--quiet-graphite);
  line-height: 1.65;
}

.guardian-rebind-empty h3 {
  margin: 16px 0 6px;
  color: var(--trust-blue);
}

.guardian-rebind-empty .button {
  width: 100%;
  margin-top: 18px;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(160px, 240px) minmax(160px, 240px) auto;
  gap: 12px;
  align-items: end;
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.toolbar-compact {
  grid-template-columns: minmax(180px, 240px) auto;
}

.toolbar .field {
  gap: 5px;
}

.toolbar .input,
.toolbar .select {
  min-height: 42px;
}

.toolbar-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.work-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.work-grid.with-panel {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 390px);
}

.table-wrap {
  min-width: 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
}

.class-table {
  min-width: 920px;
}

.teacher-class-group {
  border-top: 1px solid var(--line);
  background: #fff;
}

.point-ledger {
  position: relative;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.point-ledger + .point-ledger {
  margin-top: 18px;
}

.point-ledger > summary {
  position: relative;
  display: grid;
  grid-template-columns: 6px 18px minmax(180px, 1fr) auto auto;
  gap: 14px;
  align-items: center;
  min-height: 78px;
  padding: 0 18px 0 0;
  color: var(--thought-night);
  cursor: pointer;
  list-style: none;
}

.point-ledger > summary::-webkit-details-marker {
  display: none;
}

.point-ledger > summary:focus-visible {
  outline: 3px solid rgba(105, 195, 192, 0.38);
  outline-offset: -3px;
}

.point-status-rail {
  align-self: stretch;
  width: 6px;
  background: var(--growth-green);
}

.point-status-rail.suspended {
  background: var(--spark-yellow);
}

.point-status-rail.deleted {
  background: var(--spark-red);
}

.point-name {
  color: var(--trust-blue);
  font-size: 1.05rem;
  font-weight: 740;
}

.point-counts {
  color: var(--graphite);
  font-size: 0.78rem;
  white-space: nowrap;
}

.point-body {
  padding: 0 20px 22px 38px;
}

.point-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(140px, 1fr));
  gap: 1px;
  margin-bottom: 16px;
  background: var(--line);
}

.point-facts > div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
  min-height: 62px;
  padding: 12px 14px;
  background: #f8fafb;
}

.point-facts span {
  color: var(--graphite);
  font-size: 0.74rem;
}

.point-facts strong {
  color: var(--thought-night);
  font-size: 0.86rem;
}

.point-facts .fact-code {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.class-point > summary .point-counts {
  grid-column: 4 / 6;
  justify-self: end;
}

.point-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
}

.point-warning {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-radius: 10px;
  color: #684f13;
  background: #fff5d6;
  line-height: 1.55;
}

.read-only-note,
.read-only-label {
  color: var(--graphite);
  font-size: 0.78rem;
}

.read-only-note {
  margin: 0 0 16px;
}

.point-teacher-table {
  min-width: 760px;
}

.muted-row {
  color: var(--graphite);
  text-align: center !important;
}

.panel-context {
  margin: -10px 0 22px;
  color: var(--graphite);
}

.class-tree {
  padding-left: 28px;
}

.teacher-class-group + .teacher-class-group {
  margin-top: 14px;
}

.teacher-class-group > summary {
  min-height: 68px;
  padding: 0 18px;
  display: grid;
  grid-template-columns: 18px minmax(140px, auto) minmax(120px, 1fr) auto;
  gap: 12px;
  align-items: center;
  color: var(--thought-night);
  cursor: pointer;
  list-style: none;
}

.teacher-class-group > summary::-webkit-details-marker {
  display: none;
}

.teacher-class-group > summary:focus-visible {
  outline: 3px solid rgba(105, 195, 192, 0.38);
  outline-offset: -3px;
}

.group-chevron {
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--trust-blue);
  border-bottom: 2px solid var(--trust-blue);
  transform: rotate(45deg) translateY(-2px);
  transition: transform 160ms ease-out;
}

.teacher-class-group:not([open]) .group-chevron {
  transform: rotate(-45deg);
}

.point-ledger:not([open]) > summary .group-chevron {
  transform: rotate(-45deg);
}

.teacher-group-name {
  font-weight: 720;
}

.teacher-group-campus,
.teacher-group-count {
  color: var(--graphite);
  font-size: 0.78rem;
}

.teacher-group-count {
  white-space: nowrap;
}

.new-teacher-fields {
  display: grid;
  gap: 18px;
  padding: 18px;
  border-radius: 12px;
  background: var(--soft-blue);
}

.new-teacher-fields[hidden] {
  display: none;
}

.capacity-value {
  color: var(--trust-blue);
  font-weight: 720;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.course-pending {
  color: var(--graphite);
  font-size: 0.78rem;
  white-space: nowrap;
}

.course-heading {
  align-items: end;
}

.course-summary {
  display: grid;
  grid-template-columns: repeat(5, minmax(72px, 1fr));
  min-width: min(100%, 540px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
}

.course-summary span {
  display: grid;
  gap: 2px;
  padding: 14px 16px;
  color: var(--graphite);
  font-size: 0.72rem;
}

.course-summary span + span {
  border-left: 1px solid var(--line);
}

.course-summary strong {
  color: var(--trust-blue);
  font-size: 1.35rem;
}

.course-truth-note {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  margin-bottom: 24px;
  padding: 18px 20px;
  border-left: 5px solid var(--spark-yellow);
  background: #fff9e8;
}

.course-truth-mark {
  color: var(--trust-blue);
  font-size: 1.2rem;
  font-weight: 760;
}

.course-truth-note strong {
  color: var(--thought-night);
}

.course-truth-note p {
  margin: 4px 0 0;
  color: var(--graphite);
  font-size: 0.82rem;
}

.course-level-list {
  display: grid;
  gap: 16px;
}

.course-level {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: clip;
  background: var(--white);
}

.course-level > summary {
  display: grid;
  grid-template-columns: 18px auto 1fr;
  gap: 14px;
  align-items: center;
  min-height: 66px;
  padding: 0 20px;
  cursor: pointer;
  list-style: none;
}

.course-level > summary::-webkit-details-marker {
  display: none;
}

.course-level > summary strong {
  color: var(--trust-blue);
  font-size: 1.08rem;
}

.course-level > summary span:last-child {
  color: var(--graphite);
  font-size: 0.78rem;
}

.course-level:not([open]) > summary .group-chevron {
  transform: rotate(-45deg);
}

.course-level-body {
  display: grid;
  gap: 24px;
  padding: 24px;
  border-top: 1px solid var(--line);
  background: #fbfcfc;
}

.course-series {
  min-width: 0;
}

.course-series > header {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: end;
  margin-bottom: 12px;
}

.course-series h2,
.course-series p {
  margin: 0;
}

.course-series h2 {
  color: var(--thought-night);
  font-size: 1.05rem;
}

.course-series header > span,
.course-series header div > p:last-child {
  color: var(--graphite);
  font-size: 0.76rem;
}

.course-book-list {
  display: grid;
  gap: 8px;
  overflow-x: auto;
}

.course-book {
  display: grid;
  grid-template-columns:
    42px minmax(220px, 1.2fr) 180px 66px 112px minmax(180px, 1fr)
    92px;
  gap: 16px;
  align-items: center;
  min-height: 82px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--spark-yellow);
  background: var(--white);
}

.course-book.complete {
  border-left-color: var(--growth-green);
}

.course-book-index {
  color: var(--silver);
  font-weight: 720;
}

.course-book-title,
.course-book-words,
.course-release-state {
  display: grid;
  gap: 4px;
}

.course-book-title strong,
.course-release-state strong {
  color: var(--thought-night);
}

.course-book-title span,
.course-book-words span,
.course-release-state span,
.course-missing-copy,
.course-material-progress span {
  color: var(--graphite);
  font-size: 0.72rem;
}

.course-material-progress {
  display: grid;
  gap: 9px;
}

.course-material-progress > div:first-child {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.material-rail {
  display: grid;
  grid-template-columns: repeat(11, 1fr);
  gap: 3px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.material-rail li {
  height: 6px;
  border-radius: 999px;
  background: #e1e5e6;
}

.material-rail li.ready {
  background: var(--growth-green);
}

.course-book-words strong {
  color: var(--trust-blue);
  font-size: 1.1rem;
}

.course-missing-copy {
  line-height: 1.5;
}

.course-edit-button {
  justify-self: end;
}

.course-empty-level {
  padding: 28px;
  text-align: center;
  color: var(--graphite);
}

.course-empty-level span {
  color: var(--silver);
  font-size: 1.4rem;
  font-weight: 720;
}

.course-empty-level p {
  margin: 8px 0 0;
}

.course-loading {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.course-load-state {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: center;
  margin-bottom: 18px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: var(--white);
}

.course-load-state.error {
  border-color: color-mix(in srgb, var(--spark-red) 55%, var(--line));
  background: color-mix(in srgb, var(--spark-red) 7%, var(--white));
}

.course-load-state.stale {
  border-color: color-mix(in srgb, var(--spark-yellow) 65%, var(--line));
  background: #fff9e8;
}

.course-load-state strong {
  color: var(--thought-night);
}

.course-load-state p {
  margin: 4px 0 0;
  color: var(--graphite);
  font-size: 0.82rem;
}

.course-refreshing {
  margin: -8px 0 18px;
  color: var(--graphite);
  font-size: 0.8rem;
}

.course-editor-panel {
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.course-panel-readiness {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  margin-bottom: 22px;
  padding: 12px 14px;
  background: var(--soft-blue);
}

.course-panel-readiness strong {
  color: var(--trust-blue);
  font-size: 1.2rem;
}

.course-panel-readiness span {
  color: var(--graphite);
  font-size: 0.76rem;
  line-height: 1.45;
}

.course-video-stack {
  display: grid;
  gap: 14px;
}

.course-video-fieldset {
  display: grid;
  gap: 12px;
  min-width: 0;
  margin: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.course-video-fieldset legend {
  padding: 0 6px;
  color: var(--thought-night);
  font-weight: 700;
}

.course-video-ids {
  display: grid;
  gap: 12px;
}

.course-placeholder-check {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--graphite);
  font-size: 0.8rem;
}

.course-panel-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.course-release-ledger {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.course-release-ledger h3 {
  margin: 0 0 10px;
  color: var(--thought-night);
  font-size: 0.92rem;
}

.course-release-ledger ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.course-release-ledger li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  min-height: 46px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}

.course-release-ledger li div {
  display: grid;
  gap: 2px;
}

.course-release-ledger li span,
.course-release-empty {
  color: var(--graphite);
  font-size: 0.75rem;
}

.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;
}

@media (max-width: 1180px) {
  .course-heading {
    align-items: stretch;
  }

  .course-summary {
    min-width: 0;
  }

  .course-book {
    grid-template-columns: 36px minmax(220px, 1fr) 170px 58px 104px 92px;
  }

  .course-missing-copy,
  .course-edit-button {
    grid-column: 2 / -1;
  }
}

@media (max-width: 760px) {
  .course-summary {
    grid-template-columns: repeat(2, 1fr);
  }

  .course-summary span + span {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .course-truth-note {
    grid-template-columns: 1fr;
  }

  .course-load-state {
    grid-template-columns: 1fr;
  }

  .course-book {
    grid-template-columns: 32px 1fr;
  }

  .course-material-progress,
  .course-book-words,
  .course-release-state,
  .course-missing-copy {
    grid-column: 2;
  }

  .course-edit-button {
    grid-column: 2;
    justify-self: start;
  }

  .course-panel-actions {
    grid-template-columns: 1fr;
  }
}

.data-table {
  width: 100%;
  min-width: 1100px;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.data-table th,
.data-table td {
  padding: 16px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.data-table th {
  color: var(--graphite);
  background: #f8fafb;
  font-size: 0.75rem;
  font-weight: 690;
  white-space: nowrap;
}

.data-table tbody tr:hover {
  background: #f8fbfb;
}

.table-primary {
  display: grid;
  gap: 4px;
}

.table-primary strong {
  color: var(--thought-night);
  font-weight: 700;
}

.table-primary span {
  color: var(--graphite);
  font-size: 0.76rem;
}

.inline-code-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.inline-code {
  color: var(--trust-blue);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.copy-code-button {
  min-height: 30px;
  border: 0;
  border-radius: 7px;
  padding: 0 8px;
  color: var(--trust-blue);
  background: var(--soft-blue);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 650;
}

.copy-code-button:hover {
  background: #dceff1;
}

.copy-code-button:focus-visible {
  outline: 3px solid rgba(105, 195, 192, 0.38);
  outline-offset: 2px;
}

.binding-summary {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 10px;
  color: var(--graphite);
  font-size: 0.75rem;
  white-space: nowrap;
}

.binding-summary strong {
  margin-left: 2px;
  color: var(--thought-night);
  font-weight: 700;
}

.date-cell {
  white-space: nowrap;
}

.status-badge {
  min-height: 26px;
  border-radius: 999px;
  padding: 0 10px;
  color: var(--thought-night);
  background: var(--soft-blue);
  font-size: 0.75rem;
  white-space: nowrap;
}

.status-badge.active {
  color: #1d625e;
  background: #e3f5f3;
}

.status-badge.expired,
.status-badge.replaced,
.status-badge.full {
  color: #655424;
  background: #fff6d9;
}

.status-badge.disabled {
  color: #8f3732;
  background: #fde9e7;
}

.status-badge.suspended,
.status-badge.suspended_pending_transfer,
.status-badge.recovery_pending,
.status-badge.archived,
.status-badge.expired,
.status-badge.replaced,
.status-badge.full {
  color: #655424;
  background: #fff6d9;
}

.status-badge.deleted,
.status-badge.invalidated,
.status-badge.inactive {
  color: #8f3732;
  background: #fde9e7;
}

.status-badge.no_login_identity {
  color: #315f88;
  background: #e9f1fb;
}

.action-row {
  display: flex;
  gap: 2px;
  white-space: nowrap;
}

.side-panel {
  position: sticky;
  top: 24px;
  align-self: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  background: var(--white);
  box-shadow: 8px 12px 28px rgba(18, 65, 89, 0.1);
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.panel-head h2 {
  margin: 0;
  color: var(--trust-blue);
  font-size: 1.35rem;
}

.panel-close {
  min-width: 40px;
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  color: var(--graphite);
  background: transparent;
  font-size: 1.4rem;
}

.panel-close:hover {
  background: var(--mist);
}

.student-picker {
  min-width: 0;
  margin: 0;
  border: 0;
  padding: 0;
}

.student-picker legend {
  margin-bottom: 10px;
  color: var(--thought-night);
  font-size: 0.86rem;
  font-weight: 690;
}

.student-select-all,
.student-select-row {
  display: flex;
  align-items: center;
  gap: 11px;
  cursor: pointer;
}

.student-select-all {
  min-height: 42px;
  border-bottom: 1px solid var(--line);
  color: var(--trust-blue);
  font-size: 0.82rem;
  font-weight: 680;
}

.student-select-list {
  max-height: 310px;
  overflow-y: auto;
  border-bottom: 1px solid var(--line);
}

.student-select-row {
  min-height: 58px;
  border-bottom: 1px solid var(--line);
  padding: 7px 2px;
}

.student-select-row:last-child {
  border-bottom: 0;
}

.student-select-row > span {
  display: grid;
  gap: 3px;
}

.student-select-row strong {
  color: var(--thought-night);
  font-size: 0.86rem;
}

.student-select-row small {
  color: var(--graphite);
  font-size: 0.72rem;
}

.student-select-row input,
.student-select-all input {
  width: 18px;
  height: 18px;
  accent-color: var(--trust-blue);
}

.student-list-state {
  min-height: 92px;
  padding: 26px 0;
  color: var(--graphite);
  line-height: 1.55;
}

.student-list-state.error {
  color: var(--spark-red);
}

.guardian-student-list,
.guardian-relationship-list {
  border-top: 1px solid var(--line);
}

.guardian-student-row,
.guardian-relationship-row {
  min-width: 0;
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding: 10px 0;
}

.guardian-student-row > span,
.guardian-relationship-row > span {
  min-width: 0;
  flex: 1;
  display: grid;
  gap: 4px;
}

.guardian-student-row strong,
.guardian-relationship-row strong {
  overflow-wrap: anywhere;
  color: var(--thought-night);
  font-size: 0.9rem;
}

.guardian-student-row small,
.guardian-relationship-row small {
  color: var(--graphite);
  font-size: 0.74rem;
}

.guardian-rule {
  margin: 20px 0 0;
  color: var(--graphite);
  font-size: 0.82rem;
  line-height: 1.65;
}

.panel-back {
  min-height: 44px;
  margin: -6px 0 8px;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--trust-blue);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 680;
  cursor: pointer;
}

.panel-back:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--growth-green), transparent 35%);
  outline-offset: 3px;
}

.transfer-summary {
  border-left: 4px solid var(--growth-green);
  padding: 10px 12px;
  color: var(--trust-blue);
  background: var(--soft-blue);
  font-size: 0.8rem;
  font-weight: 660;
}

.empty-state,
.loading-state {
  display: grid;
  place-items: start;
  min-height: 260px;
  padding: 48px 16px;
  color: var(--graphite);
}

.empty-state strong {
  margin-bottom: 8px;
  color: var(--thought-night);
  font-size: 1.05rem;
}

.skeleton-row {
  width: 100%;
  height: 54px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, #f5f7f8 25%, #eef2f3 42%, #f5f7f8 65%);
  background-size: 300% 100%;
  animation: skeleton 1.2s ease-in-out infinite;
}

@keyframes skeleton {
  from {
    background-position: 100% 0;
  }
  to {
    background-position: 0 0;
  }
}

.confirm-dialog {
  width: min(calc(100% - 32px), 520px);
  border: 0;
  border-radius: var(--radius);
  padding: 34px;
  color: var(--ink);
  background: var(--white);
  box-shadow: 10px 18px 42px rgba(18, 65, 89, 0.2);
}

.confirm-dialog::backdrop {
  background: rgba(12, 43, 57, 0.52);
}

.confirm-dialog h2 {
  margin: 0;
  color: var(--trust-blue);
  font-size: 1.7rem;
}

.dialog-kicker.danger {
  color: var(--spark-red);
}

.dialog-note {
  margin: 12px 0 24px;
  color: var(--graphite);
  line-height: 1.65;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

.toast-region {
  position: fixed;
  z-index: 200;
  right: 22px;
  bottom: 22px;
  display: grid;
  gap: 10px;
  width: min(360px, calc(100vw - 44px));
}

.toast {
  border-radius: 10px;
  padding: 14px 16px;
  color: var(--white);
  background: var(--thought-night);
  box-shadow: 7px 10px 24px rgba(18, 65, 89, 0.18);
  line-height: 1.5;
}

.toast.error {
  background: #96342f;
}

@media (max-width: 1040px) {
  .work-grid.with-panel {
    grid-template-columns: minmax(0, 1fr);
  }

  .side-panel {
    position: static;
    grid-row: 1;
  }

  .point-facts {
    grid-template-columns: repeat(2, minmax(180px, 1fr));
  }
}

@media (max-width: 820px) {
  .auth-layout {
    grid-template-columns: 1fr;
  }

  .auth-brand {
    min-height: 300px;
    padding: 28px;
  }

  .brand-statement {
    margin: 48px 0 20px;
  }

  .brand-statement h1 {
    font-size: 2.8rem;
  }

  .brand-statement p,
  .signal-legend {
    display: none;
  }

  .auth-main {
    place-items: start center;
    padding: 44px 24px 64px;
  }

  .admin-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    min-height: auto;
    padding: 18px 20px;
  }

  .sidebar .brand-logo {
    width: 116px;
    margin: 0 0 18px;
  }

  .nav-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .teacher-class-group > summary {
    grid-template-columns: 18px 1fr auto;
  }

  .point-ledger > summary {
    grid-template-columns: 6px 18px minmax(0, 1fr) auto;
  }

  .point-counts {
    grid-column: 3 / -1;
    padding-bottom: 14px;
  }

  .point-body {
    padding-left: 24px;
  }

  .teacher-group-campus {
    display: none;
  }

  .nav-item {
    justify-content: center;
    padding: 0 8px;
  }

  .nav-mark,
  .nav-label,
  .sidebar-foot {
    display: none;
  }

  .topbar {
    min-height: 58px;
  }

  .content {
    padding-top: 30px;
  }

  .page-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .recovery-rule {
    min-width: 0;
  }

  .toolbar {
    grid-template-columns: 1fr;
  }

  .toolbar-actions {
    justify-content: stretch;
  }

  .toolbar-actions .button {
    flex: 1;
  }
}

@media (max-width: 520px) {
  .auth-brand {
    min-height: 220px;
  }

  .brand-statement {
    margin: 28px 0 0;
  }

  .brand-statement h1 {
    font-size: 2.25rem;
  }

  .page-heading h1 {
    font-size: 2rem;
  }

  .dialog-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .point-facts {
    grid-template-columns: 1fr;
  }

  .point-ledger > summary .status-badge {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}