:root {
  --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Segoe UI Variable", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;
  --text-xs: 11px;
  --text-sm: 12px;
  --text-base: 13px;
  --text-md: 14px;
  --text-lg: 16px;
  --text-xl: 20px;
  --text-2xl: 26px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-pill: 999px;
  --sidebar-w: 280px;
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-2: #f0f1ee;
  --surface-3: #e7e9e5;
  --border: rgba(16, 24, 40, 0.09);
  --border-strong: rgba(16, 24, 40, 0.16);
  --text: #101414;
  --text-secondary: #565f5f;
  --text-tertiary: #899191;
  --text-on-accent: #ffffff;
  --accent: #236b63;
  --accent-hover: #1b554f;
  --accent-soft: rgba(35, 107, 99, 0.12);
  --accent-line: rgba(35, 107, 99, 0.24);
  --indigo: #404b8f;
  --indigo-soft: rgba(64, 75, 143, 0.12);
  --success: #15803d;
  --success-soft: rgba(21, 128, 61, 0.12);
  --warning: #b45309;
  --warning-soft: rgba(180, 83, 9, 0.12);
  --danger: #b42318;
  --danger-soft: rgba(180, 35, 24, 0.11);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-system);
  font-size: var(--text-base);
  line-height: 1.5;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select,
textarea {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  min-width: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3);
  overflow-y: auto;
  background: var(--surface);
  border-right: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.brand-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: var(--text-on-accent);
  font-size: var(--text-xs);
  font-weight: 700;
}

.brand-title,
.brand-subtitle {
  display: block;
}

.brand-title {
  font-size: var(--text-base);
  font-weight: 700;
}

.brand-subtitle,
.muted-text,
.panel-header p,
.module-hero p,
.stat-note,
.table td span,
.queue-item small,
.mini-card span,
.progress-row span,
.sidebar-footer span {
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}

.nav {
  display: grid;
  gap: var(--space-1);
  flex: 1 1 auto;
}

.nav a {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  color: var(--text-secondary);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  background: var(--accent-soft);
  border-color: rgba(35, 107, 99, 0.18);
}

.nav-icon {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 700;
}

.sidebar-footer {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.sidebar-schedule {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.sidebar-schedule-head,
.sidebar-lesson {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.sidebar-schedule-head a {
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 800;
}

.sidebar-lesson {
  min-height: 34px;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 48px;
}

.sidebar-lesson span,
.sidebar-lesson small {
  color: var(--text-secondary);
  font-size: var(--text-xs);
}

.sidebar-lesson strong {
  overflow: hidden;
  font-size: var(--text-sm);
  white-space: nowrap;
  text-overflow: ellipsis;
}

.main {
  min-width: 0;
  width: 100%;
  padding: var(--space-5);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 62px;
  margin: calc(var(--space-5) * -1) calc(var(--space-5) * -1) var(--space-4);
  padding: 0 var(--space-5);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 var(--space-1);
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: var(--text-2xl);
  line-height: 1.1;
}

h2 {
  margin-bottom: var(--space-1);
  font-size: var(--text-lg);
}

h3 {
  margin-bottom: var(--space-2);
  font-size: var(--text-md);
}

.topbar-actions,
.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.topbar-left {
  flex: 1 1 auto;
}

.icon-button {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: transparent;
  cursor: pointer;
  position: relative;
}

.icon-button::before,
.icon-button::after {
  content: "";
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  box-shadow: 0 6px 0 var(--text);
  position: absolute;
}

.icon-button::after {
  box-shadow: none;
  transform: translateY(-6px);
}

.date-chip {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-3);
  color: var(--text-secondary);
}

.date-chip span {
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
}

.date-chip strong {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.notification-dot {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--danger);
  color: var(--text-on-accent);
  font-size: var(--text-xs);
  font-weight: 800;
}

.notification-dot.secondary {
  background: var(--indigo);
}

.profile-chip {
  min-width: 188px;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: var(--space-2);
  align-items: center;
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.profile-chip > span {
  grid-row: 1 / 3;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--accent);
  color: var(--text-on-accent);
  font-weight: 800;
}

.profile-chip strong,
.profile-chip small {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.profile-chip small {
  color: var(--text-tertiary);
}

.page-title-row {
  margin-bottom: var(--space-4);
}

.page-title-row h1 {
  font-size: var(--text-xl);
}

.command-search {
  width: min(320px, 24vw);
  min-width: 220px;
  height: 36px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.command-search span,
.next-class span {
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
}

.command-search input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: var(--text-sm);
}

.next-class {
  height: 36px;
  display: grid;
  align-content: center;
  gap: 1px;
  padding: 0 var(--space-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.next-class strong {
  font-size: var(--text-sm);
  line-height: 1;
}

.role-switcher select,
.feedback-demo textarea {
  height: 34px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text);
  padding: 0 var(--space-3);
}

.role-switcher {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.role-switcher span {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 700;
}

.role-switcher select {
  border: 0;
  background: var(--surface-2);
}

.btn {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-3);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--accent);
  color: var(--text-on-accent);
  cursor: pointer;
  font-weight: 700;
}

.btn:hover {
  background: var(--accent-hover);
}

.btn.muted,
.btn.ghost {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border);
}

.btn.compact {
  min-height: 28px;
  padding: 0 var(--space-2);
  font-size: var(--text-sm);
}

.btn.success {
  background: var(--success);
}

.dashboard-grid,
.command-dashboard,
.module-shell {
  display: grid;
  gap: var(--space-4);
}

.command-dashboard {
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.72fr);
  align-items: start;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.stat-card,
.panel,
.lesson-cockpit,
.timer-panel,
.assessment-workbench,
.progress-intelligence,
.platform-strip,
.module-hero,
.mini-card,
.queue-item,
.strip-card,
.assessment-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.stat-card {
  display: grid;
  gap: var(--space-1);
  min-height: 116px;
  padding: var(--space-4);
}

.stat-label {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 700;
}

.stat-value {
  font-size: 30px;
  line-height: 1;
}

.stat-value.blue {
  color: var(--indigo);
}

.stat-value.green {
  color: var(--success);
}

.stat-value.orange {
  color: var(--warning);
}

.stat-value.red {
  color: var(--danger);
}

.simple-dashboard {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--space-4);
}

.dash-panel {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.span-3 {
  grid-column: span 3;
}

.span-4 {
  grid-column: span 4;
}

.span-6 {
  grid-column: span 6;
}

.panel-title {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--border);
}

.panel-title h2 {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: 800;
}

.panel-title a {
  color: var(--accent);
  font-size: var(--text-sm);
  font-weight: 800;
}

.lesson-list {
  display: grid;
}

.lesson-row {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 66px 56px;
  align-items: center;
  gap: var(--space-3);
  min-height: 80px;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
}

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

.lesson-time {
  min-height: 50px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(35, 107, 99, 0.16);
  border-radius: var(--radius-md);
  background: rgba(35, 107, 99, 0.06);
  text-align: center;
}

.lesson-time strong {
  color: var(--accent);
}

.lesson-time span,
.lesson-main span,
.lesson-main small,
.lesson-count span {
  color: var(--text-tertiary);
  font-size: var(--text-xs);
}

.lesson-main {
  display: grid;
  gap: 1px;
}

.lesson-main strong,
.lesson-main span,
.lesson-main small {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.lesson-count {
  display: grid;
  justify-items: end;
}

.lesson-count .joined {
  color: var(--success);
}

.lesson-count .upcoming {
  color: var(--warning);
}

.compact-table .table th,
.compact-table .table td {
  padding: 10px var(--space-3);
  font-size: var(--text-sm);
}

.compact-table .table th {
  background: var(--surface);
  color: var(--text-secondary);
  text-transform: none;
}

.progress-distribution {
  display: grid;
  padding: var(--space-3);
  gap: var(--space-2);
}

.distribution-head,
.distribution-row {
  display: grid;
  grid-template-columns: 64px repeat(5, minmax(0, 1fr));
  align-items: center;
  gap: var(--space-2);
}

.distribution-head {
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 800;
}

.distribution-row {
  min-height: 34px;
}

.mini-meter {
  display: grid;
  gap: 3px;
  color: var(--text-secondary);
  font-size: var(--text-xs);
}

.mini-meter b {
  display: block;
  order: 2;
  max-width: 100%;
  height: 4px;
  border-radius: var(--radius-pill);
  background: var(--success);
}

.mini-meter.amber b {
  background: var(--warning);
}

.mini-meter.red b {
  background: var(--danger);
}

.timer-focus {
  padding-bottom: var(--space-4);
}

.dual-timer {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
}

.dual-timer div {
  display: grid;
  gap: var(--space-2);
}

.dual-timer span {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.dual-timer strong {
  color: var(--accent);
  font-size: 42px;
  line-height: 0.95;
  font-family: var(--font-mono);
}

.meter-fill {
  height: 5px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--surface-3);
}

.meter-fill span {
  display: block;
  height: 100%;
  background: var(--accent);
}

.timer-actions {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: var(--space-2);
  padding: 0 var(--space-4);
}

.timer-actions .btn:first-child:nth-last-child(2) {
  grid-column: span 2;
}

.mini-action {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  padding: 0 var(--space-2);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 800;
}

.score-pill {
  display: inline-flex;
  min-width: 34px;
  justify-content: center;
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--success-soft);
  color: var(--success);
  font-weight: 800;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-strip article {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-4);
  border-right: 1px solid var(--border);
}

.metric-strip article:last-child {
  border-right: 0;
}

.metric-strip span {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.metric-strip strong {
  color: var(--text);
  font-size: 28px;
  line-height: 1;
}

.student-list,
.student-card-grid,
.student-progress-list {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
}

.student-row,
.student-feedback-card,
.student-progress-row {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.student-row {
  min-height: 58px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
}

.student-row strong,
.student-row span,
.student-feedback-card strong,
.student-feedback-card small,
.student-progress-row strong,
.student-progress-row span {
  display: block;
}

.student-row strong,
.student-row span {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.student-row span,
.student-feedback-card p,
.student-feedback-card small,
.student-progress-row span {
  color: var(--text-secondary);
}

.student-feedback-card {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
}

.student-feedback-card p,
.student-feedback-card blockquote {
  margin: 0;
}

.student-feedback-card blockquote {
  padding: var(--space-3);
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--text-secondary);
}

.feedback-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.feedback-tags span {
  min-height: 24px;
  display: inline-flex;
  align-items: center;
  padding: 0 var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 700;
}

.student-progress-row {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(140px, 240px) 70px;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
}

.panel,
.lesson-cockpit,
.timer-panel,
.assessment-workbench,
.progress-intelligence {
  min-width: 0;
  padding: var(--space-4);
}

.lesson-cockpit,
.assessment-workbench,
.platform-strip,
.legacy-table,
.module-hero {
  grid-column: 1 / -1;
}

.stat-grid {
  grid-column: 1 / -1;
}

.timer-panel {
  grid-column: 2;
  grid-row: 2;
}

.progress-intelligence {
  grid-column: 2;
  grid-row: 3;
}

.panel-header,
.module-hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.cockpit-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.cockpit-layout {
  display: grid;
  grid-template-columns: minmax(340px, 0.78fr) minmax(0, 1fr);
  gap: var(--space-4);
}

.current-lesson {
  min-height: 280px;
  display: grid;
  align-content: start;
  gap: var(--space-3);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(35, 107, 99, 0.12), rgba(64, 75, 143, 0.08)),
    var(--surface-2);
  border: 1px solid var(--accent-line);
}

.current-lesson h3 {
  margin: 0;
  font-size: var(--text-xl);
}

.current-lesson p {
  color: var(--text-secondary);
}

.surface-label {
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.tool-chip {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border);
  font-weight: 700;
}

.tool-chip b {
  color: var(--text-tertiary);
  font-size: var(--text-xs);
}

.tool-chip.check {
  border-color: rgba(180, 83, 9, 0.28);
  background: var(--warning-soft);
}

.lesson-plan {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.plan-step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: start;
  gap: var(--space-3);
  min-height: 82px;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

.plan-step > span {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--surface-2);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 800;
}

.plan-step strong,
.plan-step small {
  display: block;
}

.plan-step small {
  color: var(--text-tertiary);
}

.plan-step.active {
  border-color: var(--accent-line);
  background: var(--accent-soft);
}

.plan-step.active > span {
  background: var(--accent);
  color: var(--text-on-accent);
}

.module-hero {
  align-items: center;
  padding: var(--space-5);
}

.module-hero h2 {
  font-size: var(--text-xl);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.table th,
.table td {
  padding: var(--space-3);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  white-space: normal;
  word-break: normal;
  overflow-wrap: break-word;
}

.table th {
  color: var(--text-secondary);
  background: var(--surface-2);
  font-size: var(--text-xs);
  font-weight: 700;
  text-align: left;
  text-transform: uppercase;
}

.table td strong,
.table td span {
  display: block;
}

.badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 22px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 700;
}

.badge.scheduled,
.badge.ready,
.badge.open {
  background: var(--accent-soft);
  color: var(--accent);
}

.badge.completed,
.badge.checked,
.badge.closed,
.badge.solved,
.badge.course {
  background: var(--success-soft);
  color: var(--success);
}

.badge.submitted,
.badge.in_progress,
.badge.processing,
.badge.waiting_for_user,
.badge.draft {
  background: var(--warning-soft);
  color: var(--warning);
}

.badge.not_started,
.badge.needs_review,
.badge.locked,
.badge.priority-urgent {
  background: var(--danger-soft);
  color: var(--danger);
}

.badge.priority-high {
  background: var(--danger-soft);
  color: var(--danger);
}

.badge.priority-medium {
  background: var(--warning-soft);
  color: var(--warning);
}

.badge.priority-low {
  background: var(--success-soft);
  color: var(--success);
}

.badge.priority-normal {
  background: var(--indigo-soft);
  color: var(--indigo);
}

.timer-list,
.queue-list,
.progress-list {
  display: grid;
  gap: var(--space-3);
}

.timer-card {
  width: 100%;
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
  padding: var(--space-3);
  color: var(--text);
  cursor: pointer;
  text-align: left;
}

.timer-card strong {
  font-family: var(--font-mono);
  font-size: var(--text-xl);
}

.assessment-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.assessment-lane {
  display: grid;
  gap: var(--space-2);
}

.assessment-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 128px;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3);
}

.assessment-row strong,
.assessment-row small {
  display: block;
}

.assessment-row small {
  color: var(--text-tertiary);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.band-pair {
  display: grid;
  gap: var(--space-1);
  text-align: right;
  font-size: var(--text-sm);
}

.band-pair span {
  color: var(--text-tertiary);
}

.band-pair b {
  color: var(--accent);
}

.progress-row {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(120px, 220px) 42px;
  align-items: center;
  gap: var(--space-3);
}

.progress-row.large {
  grid-template-columns: minmax(200px, 1fr) minmax(180px, 360px) 80px;
  min-height: 58px;
}

.progress-row strong,
.progress-row span {
  display: block;
}

.band-meter {
  height: 9px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
}

.band-meter span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--indigo));
}

.queue-item,
.mini-card {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
}

.queue-item p {
  margin-bottom: 0;
  color: var(--text-secondary);
}

.mini-grid,
.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: var(--space-3);
}

.platform-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.strip-card {
  display: grid;
  align-content: start;
  gap: var(--space-2);
  min-height: 154px;
  padding: var(--space-3);
}

.strip-card strong,
.strip-card small {
  display: block;
}

.strip-card small {
  color: var(--text-tertiary);
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: var(--space-4);
  align-items: start;
}

.criteria-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-2);
}

.criteria-grid span {
  min-height: 30px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--surface-2);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 700;
  text-align: center;
}

.feedback-demo {
  display: grid;
  gap: var(--space-3);
}

.feedback-demo textarea {
  width: 100%;
  height: auto;
  min-height: 180px;
  padding: var(--space-3);
  resize: vertical;
}

.ai-result {
  min-height: 120px;
  margin: 0;
  padding: var(--space-3);
  white-space: pre-wrap;
  border-radius: var(--radius-md);
  background: #101414;
  color: #e8f3ef;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.transcript-card blockquote {
  margin: 0;
  padding: var(--space-3);
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  color: var(--text-secondary);
}

.login-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-6);
}

.login-shell {
  width: min(920px, 100%);
}

.login-panel {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.login-brand {
  width: fit-content;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.role-card button {
  width: 100%;
  min-height: 142px;
  display: grid;
  gap: var(--space-2);
  align-content: start;
  text-align: left;
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-2);
  color: var(--text);
  cursor: pointer;
}

.role-card button:hover {
  border-color: rgba(35, 107, 99, 0.35);
  background: var(--accent-soft);
}

.role-card-label {
  color: var(--accent);
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
}

.role-card-name {
  font-size: var(--text-lg);
  font-weight: 800;
}

.role-card-subtitle {
  color: var(--text-secondary);
}

@media (max-width: 1280px) {
  :root {
    --sidebar-w: 260px;
  }

  .main {
    padding: var(--space-4);
  }

  .topbar {
    margin: calc(var(--space-4) * -1) calc(var(--space-4) * -1) var(--space-4);
    padding: 0 var(--space-4);
  }

  .simple-dashboard {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .span-3,
  .span-4,
  .span-6 {
    grid-column: span 6;
  }

  .lesson-row {
    grid-template-columns: 58px minmax(0, 1fr) 64px auto;
  }
}

@media (max-width: 860px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .nav {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }

  .sidebar-footer {
    display: none;
  }

  .command-dashboard,
  .dashboard-grid,
  .cockpit-layout,
  .assessment-columns,
  .split-grid {
    grid-template-columns: 1fr;
  }

  .timer-panel,
  .progress-intelligence,
  .panel-wide {
    grid-column: auto;
    grid-row: auto;
  }

  .stat-grid,
  .platform-strip,
  .role-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topbar {
    margin: 0 0 var(--space-4);
    padding: var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
  }

  .profile-chip {
    min-width: 150px;
  }
}

@media (max-width: 640px) {
  .main {
    padding: var(--space-3);
  }

  .topbar,
  .module-hero,
  .panel-header {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-left,
  .topbar-actions {
    align-items: stretch;
    width: 100%;
  }

  .topbar-left .btn,
  .role-switcher,
  .date-chip,
  .profile-chip {
    width: 100%;
  }

  .stat-grid,
  .platform-strip,
  .lesson-plan,
  .tool-grid,
  .role-grid {
    grid-template-columns: 1fr;
  }

  .simple-dashboard {
    grid-template-columns: 1fr;
  }

  .span-3,
  .span-4,
  .span-6 {
    grid-column: 1;
  }

  .lesson-row,
  .distribution-head,
  .distribution-row,
  .timer-actions,
  .metric-strip {
    grid-template-columns: 1fr;
  }

  .lesson-count {
    justify-items: start;
  }

  .progress-row,
  .progress-row.large,
  .assessment-row,
  .student-progress-row,
  .criteria-grid {
    grid-template-columns: 1fr;
  }

  .command-search {
    width: 100%;
  }
}