:root {
  color-scheme: light;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --color-bg: #f5f7fb;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-text: #1f2937;
  --color-muted: #6b7280;
  --color-primary: #139b8f;
  --color-secondary: #f37135;
  --color-accent: #8ccb4c;
  --color-info: #0f8f7b;
  --color-danger: #dc2626;
  --shadow-lg: 0 24px 48px rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.08);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
}

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

body {
  margin: 0;
  background: linear-gradient(180deg, #f8fbff 0%, #eef5fb 100%);
  color: var(--color-text);
}

/* Login overlay */
.login-screen {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.08);
  backdrop-filter: blur(2px);
  align-items: center;
  justify-content: center;
  z-index: 999;
  padding: 24px;
}
.login-screen.is-visible {
  display: flex;
}
.login-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  max-width: 420px;
  width: 100%;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}
.login-card h1 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 20px;
}
.login-card form {
  display: grid;
  gap: 12px;
}
.login-card input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 14px;
}
.login-card button {
  width: 100%;
}
.login-card .muted {
  margin: 0;
  font-size: 13px;
}

.help-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-left: 4px;
  border-radius: 50%;
  background: rgba(15, 143, 123, 0.1);
  color: #0f8f7b;
  font-weight: 700;
  font-size: 12px;
  cursor: help;
}

.app-shell {
  display: grid;
  min-height: 100vh;
  grid-template-columns: 280px 1fr;
}

.sidebar {
  display: flex;
  flex-direction: column;
  padding: 32px 24px;
  background: radial-gradient(circle at top, #17324d 0%, #0c1726 100%);
  color: #fff;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 32px;
}

.brand-mark {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.08);
  display: grid;
  place-items: center;
}

.brand-mark svg {
  width: 42px;
  height: 42px;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-weight: 700;
  font-size: 1.2rem;
}

.brand-subtitle {
  font-size: 0.85rem;
  opacity: 0.76;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: auto;
}

.nav-link {
  appearance: none;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  background: transparent;
  color: inherit;
  text-align: left;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  outline: none;
}

.nav-link.is-active {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.15), transparent);
  box-shadow: inset 2px 0 0 0 var(--color-accent);
}

.sidebar-footer {
  display: grid;
  gap: 8px;
  margin-top: 32px;
}

.status-chip {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
}

.status-chip .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
}

.status-chip.is-ok .dot {
  background: #34d399;
}

.status-chip.is-warn .dot {
  background: #fbbf24;
}

.status-chip.is-error .dot {
  background: #f87171;
}

.content {
  background: transparent;
  padding: 32px 36px 48px;
  position: relative;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}

.topbar h1 {
  margin: 0;
  font-size: 1.9rem;
  font-weight: 700;
}

.topbar p {
  margin: 6px 0 0;
  color: var(--color-muted);
}

.persona-switcher {
  display: none;
}

.persona-btn {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 8px 16px;
  background: transparent;
  color: var(--color-info);
  font-weight: 600;
  cursor: pointer;
}

.persona-btn.is-active {
  background: var(--color-info);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.mode-toggle {
  display: grid;
  gap: 6px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: #fff;
  box-shadow: var(--shadow-sm);
  min-width: 260px;
}

.mode-toggle label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--color-text);
}

.mode-toggle input[type="radio"] {
  accent-color: var(--color-info);
}

.mode-toggle__label {
  font-size: 0.85rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.dashboard-secondary {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.analytics-followups {
  margin-top: 20px;
}

.explainability-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  gap: 16px;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-list li {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.feature-list li:last-child {
  border-bottom: none;
}

.feature-list .feature-name {
  font-weight: 600;
}

.feature-list .feature-value {
  color: var(--color-muted);
}

.variance-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.variance-table th,
.variance-table td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
}

.variance-table tbody tr:last-child td {
  border-bottom: none;
}

.small-print {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 12px;
}

.message.explainability {
  color: var(--color-info);
  font-size: 0.9rem;
}

.sparkline-container {
  margin-top: 16px;
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sparkline-container svg {
  width: 100%;
  height: 80px;
}

.panel {
  display: none;
}

.panel.is-active {
  display: block;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.grid {
  display: grid;
  gap: 24px;
  margin-bottom: 24px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.layout-columns {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.column-lg {
  min-width: 340px;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 8px 0;
  font-size: 1.1rem;
}

.muted {
  color: var(--color-muted);
  font-size: 0.9rem;
  margin: 0 0 16px 0;
}

.metric {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.monospace {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, "Liberation Mono",
    Menlo, Courier, monospace;
  font-size: 0.85rem;
  background: #f1f5f9;
  color: #0f172a;
  padding: 12px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
}

.ghost {
  appearance: none;
  border: 1px solid rgba(19, 155, 143, 0.25);
  background: transparent;
  color: var(--color-info);
  border-radius: 999px;
  padding: 8px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}

.ghost.small {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.ghost:hover,
.ghost:focus-visible {
  background: rgba(19, 155, 143, 0.1);
  outline: none;
}

.primary {
  appearance: none;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-info), #1cb5b2);
  color: #fff;
  padding: 10px 20px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.primary:hover,
.primary:focus-visible {
  filter: brightness(1.05);
  outline: none;
}

.metric-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
}

.metric-card {
  background: #f8fafc;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  border: 1px solid rgba(15, 143, 123, 0.1);
}

.metric-card .label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.metric-card .value {
  font-size: 1.2rem;
  font-weight: 600;
}

.sample-banner {
  background: rgba(243, 113, 53, 0.12);
  border: 1px dashed rgba(243, 113, 53, 0.4);
  color: var(--color-secondary);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  grid-column: 1 / -1;
  list-style: none;
  margin: 0 0 8px;
}

.sample-banner code {
  color: inherit;
  font-weight: 600;
}

.activity-feed {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.activity-feed li {
  padding: 12px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 0.95rem;
}

form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.95rem;
}

input,
select,
textarea {
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #f8fafc;
  color: var(--color-text);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(19, 155, 143, 0.35);
  outline-offset: 2px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.form-helper {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
}

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.timeline-entry {
  background: #f8fafc;
  border-radius: var(--radius-md);
  padding: 16px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  position: relative;
}

.timeline-entry::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 24px;
  width: 4px;
  height: calc(100% - 32px);
  background: linear-gradient(180deg, var(--color-info), transparent);
  border-radius: 999px;
  opacity: 0.3;
}

.timeline-entry h3 {
  margin: 0 0 8px 0;
  font-size: 1rem;
}

.timeline-entry .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  background: rgba(19, 155, 143, 0.12);
  color: var(--color-info);
  font-weight: 600;
}

.badge.error {
  background: rgba(220, 38, 38, 0.1);
  color: var(--color-danger);
}

.badge.neutral {
  background: rgba(99, 102, 241, 0.12);
  color: #4338ca;
}

.timeline-entry .message {
  margin: 6px 0;
  color: var(--color-text);
}

.timeline-entry .constraints {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.definition-list {
  display: grid;
  gap: 12px;
}

.definition-list div {
  display: grid;
  gap: 4px;
}

.definition-list dt {
  font-weight: 600;
  color: var(--color-muted);
}

.definition-list dd {
  margin: 0;
}

.session-view {
  display: none;
}

.session-view.is-active {
  display: block;
}

.session-view--learner {
  width: 100%;
  max-width: 960px;
}

.session-view--learner.is-active {
  display: block;
}

.answer-options {
  display: grid;
  gap: 12px;
  margin: 0 0 12px;
  padding: 0;
  border: none;
}

.answer-options label {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(148, 163, 184, 0.4);
  cursor: pointer;
  background: rgba(248, 250, 252, 0.6);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.answer-options input[type="radio"] {
  margin: 0;
  accent-color: var(--color-info);
}

.answer-options label:hover,
.answer-options label:focus-within {
  border-color: var(--color-info);
  background: rgba(19, 155, 143, 0.08);
}

.answer-options input[type="radio"]:checked + span {
  color: var(--color-info);
  font-weight: 600;
}

.answer-confidence {
  display: grid;
  gap: 6px;
  font-weight: 500;
  color: var(--color-muted);
}

.answer-confidence input {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 8px 12px;
  font-size: 1rem;
}

.answer-open {
  display: grid;
  gap: 6px;
  font-weight: 500;
  color: var(--color-muted);
}

.answer-open textarea {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 8px 12px;
  font: inherit;
  min-height: 96px;
  resize: vertical;
}

.learner-conversation {
  display: grid;
  gap: 16px;
}

.chat-log {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.learner-compose {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
}

.chat-item {
  display: grid;
  gap: 6px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.hint-callout {
  border-radius: var(--radius-sm);
  background: rgba(19, 155, 143, 0.08);
  border: 1px solid rgba(19, 155, 143, 0.2);
  padding: 8px 12px;
  color: #0f172a;
  font-size: 0.95rem;
}

.chat-item.tutor {
  border-color: rgba(19, 155, 143, 0.25);
  background: rgba(19, 155, 143, 0.08);
}

.chat-item.user {
  border-color: rgba(15, 23, 42, 0.15);
  background: #fff;
  justify-self: end;
}

.chat-author {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--color-muted);
}

.chat-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chat-actions .badge {
  background: rgba(15, 23, 42, 0.08);
}

.session-view--learner .form-helper.small {
  font-size: 0.8rem;
}

.chat-meta {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.instrumentation-log {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.instrumentation-log li {
  font-size: 0.9rem;
  color: var(--color-muted);
}

.file-input {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(19, 155, 143, 0.3);
  color: var(--color-info);
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}

.file-input:hover {
  background: rgba(19, 155, 143, 0.08);
}

.file-input input {
  display: none;
}

.trace-timeline {
  display: grid;
  gap: 12px;
}

.trace-card {
  border-radius: var(--radius-sm);
  background: #f8fafc;
  padding: 12px 16px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 0.92rem;
}

.matrix {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
}

.matrix caption {
  text-align: left;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-muted);
}

.matrix th,
.matrix td {
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: 10px;
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

thead {
  background: rgba(15, 143, 123, 0.08);
}

th,
td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.summary-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.summary-list li {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 0.95rem;
}

.summary-card {
  background: #f8fafc;
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(148, 163, 184, 0.2);
  display: grid;
  gap: 8px;
}

.summary-card h3 {
  margin: 0;
  font-size: 1rem;
}

.summary-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.notebook-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.notebook-card {
  background: #f8fafc;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.25);
  display: grid;
  gap: 12px;
}

.notebook-card h3 {
  margin: 0;
  font-size: 1.05rem;
}

.notebook-card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.notebook-card .actions {
  display: flex;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(19, 155, 143, 0.12);
  color: var(--color-info);
  font-weight: 600;
}

.chip.neutral {
  background: rgba(15, 23, 42, 0.08);
  color: var(--color-text);
}

.chip.success {
  background: rgba(52, 211, 153, 0.18);
  color: #047857;
}

.chip.warn {
  background: rgba(243, 113, 53, 0.16);
  color: var(--color-secondary);
}

.trace-meta {
  background: #f8fafc;
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 0.9rem;
  margin-top: 12px;
}

.confidence-chips {
  margin-top: 8px;
}
.confidence-chips .muted {
  margin-bottom: 4px;
}
.chip-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.chip.confidence-chip {
  border: 1px solid #cbd5e1;
  border-radius: 999px;
  padding: 6px 10px;
  background: #f8fafc;
  color: #0f172a;
  cursor: pointer;
  font-weight: 600;
  transition: all 120ms ease;
}
.chip.confidence-chip:hover {
  border-color: #0ea5e9;
  color: #0ea5e9;
}
.chip.confidence-chip.selected {
  border-color: #0ea5e9;
  background: #0ea5e9;
  color: #fff;
  box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.15);
}

.split-toggle {
  margin-top: 12px;
}

.split-toggle label {
  font-weight: 500;
  color: var(--color-muted);
  gap: 8px;
  display: inline-flex;
  align-items: center;
}

.chart-summary {
  margin-top: 12px;
  color: var(--color-muted);
  font-size: 0.88rem;
}

.demo-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.demo-checklist label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

@media (max-width: 960px) {
  .app-shell {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: sticky;
    top: 0;
    z-index: 10;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    box-shadow: 0 10px 30px rgba(12, 23, 38, 0.18);
  }
  .nav {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
    max-width: 70%;
  }
  .nav-link {
    font-size: 0.85rem;
    padding: 8px 12px;
  }
  .sidebar-footer {
    display: none;
  }
  .content {
    padding: 24px;
  }
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .layout-columns {
    grid-template-columns: 1fr;
  }
  .session-view--learner {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

.learner-header {
  align-items: flex-start;
}

.muted.small {
  font-size: 0.85rem;
  margin-top: 4px;
}

.learner-toolbar {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
}

.learner-toolbar label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 600;
  color: var(--color-muted);
}

.learner-toolbar select {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 8px 12px;
  background: #fff;
  color: var(--color-text);
  font: inherit;
  cursor: pointer;
}

.domain-summary-banner {
  font-size: 0.9rem;
  color: var(--color-muted);
}


.learner-compose {
  border: 1px dashed rgba(148, 163, 184, 0.7);
  border-radius: var(--radius-md);
  padding: 16px;
  background: rgba(248, 250, 252, 0.8);
}

.learner-compose[data-awaiting="true"] {
  border-color: rgba(19, 155, 143, 0.6);
  background: rgba(19, 155, 143, 0.06);
}

.ready-actions {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid rgba(19, 155, 143, 0.3);
  border-radius: var(--radius-md);
  background: rgba(248, 250, 252, 0.8);
}

.ready-actions.is-idle {
  opacity: 0.7;
}

.ready-actions.is-idle button,
.ready-actions.is-idle input {
  pointer-events: none;
}

.ready-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.ready-controls form {
  display: flex;
  gap: 8px;
  align-items: center;
}

.ready-controls form.is-disabled {
  pointer-events: none;
  opacity: 0.6;
}

.ready-controls input {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  padding: 8px 12px;
  min-width: 200px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.chat-item.question {
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.15);
}

.chat-item.question.is-active {
  border-color: rgba(19, 155, 143, 0.5);
  box-shadow: 0 0 0 1px rgba(19, 155, 143, 0.1);
}

.question-header {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.question-header .chip {
  background: rgba(15, 23, 42, 0.08);
}

.question-progress {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.chat-question-body {
  display: grid;
  gap: 8px;
}

.chat-question-diagram {
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: var(--radius-sm);
  padding: 12px;
}

.chat-question-diagram figure {
  margin: 0;
  display: grid;
  gap: 8px;
}

.chat-question-form {
  display: grid;
  gap: 12px;
  margin-top: 8px;
}

.chat-question-summary {
  display: grid;
  gap: 8px;
  margin-top: 12px;
  border-top: 1px solid rgba(148, 163, 184, 0.25);
  padding-top: 12px;
}

.question-choices {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.question-choices li {
  border: 1px solid rgba(148, 163, 184, 0.4);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  background: rgba(248, 250, 252, 0.7);
}

.question-choices li.is-selected {
  border-color: var(--color-info);
  background: rgba(19, 155, 143, 0.08);
}

.question-choices li.is-correct {
  border-color: rgba(16, 185, 129, 0.5);
}

.chat-transcript {
  min-height: 200px;
  max-height: 420px;
  padding: 12px;
  border: 1px solid #d8e3e5;
  border-radius: 8px;
  background: #f8fbfb;
  overflow-y: auto;
  margin-bottom: 12px;
}

.chat-message {
  margin-bottom: 10px;
  line-height: 1.4;
}

.chat-message .role {
  font-weight: 600;
  color: #0f172a;
  margin-right: 6px;
}

.chat-message.user {
  text-align: right;
}

.chat-form .input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}