/* ============================================================
   27. Modern Dashboard Widgets
============================================================ */

.dashboard-widgets,
.quick-actions,
.recent-modules,
.favorite-modules,
.progress-summary,
.leaderboard-panel,
.settings-panel,
.data-status-panel,
.system-info-panel,
.help-panel {
  display: grid;
  gap: var(--space-6);
}

.dashboard-widgets__header,
.quick-actions__header,
.recent-modules__header,
.favorite-modules__header,
.progress-summary__header,
.leaderboard-panel__header,
.settings-panel__header,
.data-status-panel__header,
.system-info-panel__header,
.help-panel__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-5);
}

.dashboard-widgets__title,
.quick-actions__title,
.recent-modules__title,
.favorite-modules__title,
.progress-summary__title,
.leaderboard-panel__title,
.settings-panel__title,
.data-status-panel__title,
.system-info-panel__title,
.help-panel__title {
  font-size: var(--text-3xl);
  line-height: var(--leading-tight);
  color: var(--color-text-strong);
}

.dashboard-widgets__description,
.quick-actions__description,
.recent-modules__description,
.favorite-modules__description,
.progress-summary__description,
.leaderboard-panel__description,
.settings-panel__description,
.data-status-panel__description,
.system-info-panel__description,
.help-panel__description {
  max-width: 72ch;
  margin-top: var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
}

.dashboard-widgets__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: var(--space-5);
}

.dashboard-widget {
  position: relative;
  display: grid;
  gap: var(--space-4);
  min-height: 210px;
  padding: var(--space-5);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  color: var(--color-text);
  background: var(--card-bg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition:
    transform var(--transition-normal),
    border-color var(--transition-normal),
    background-color var(--transition-normal),
    box-shadow var(--transition-normal);
}

.dashboard-widget::before {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.16), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.22), transparent 45%);
  opacity: 0.8;
}

.dashboard-widget > * {
  position: relative;
  z-index: 1;
}

.dashboard-widget:hover {
  border-color: var(--card-border-hover);
  background: var(--card-bg-hover);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.dashboard-widget--primary {
  border-color: var(--color-brand-300);
}

.dashboard-widget--success {
  border-color: var(--badge-success-border);
}

.dashboard-widget--warning {
  border-color: var(--badge-warning-border);
}

.dashboard-widget--muted {
  opacity: 0.9;
}

.dashboard-widget__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.dashboard-widget__icon {
  display: grid;
  flex: 0 0 auto;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  font-size: 1.65rem;
  background: var(--gradient-glass);
  box-shadow: var(--shadow-sm);
}

.dashboard-widget__heading {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

.dashboard-widget__title {
  font-size: var(--text-xl);
  color: var(--color-text-strong);
}

.dashboard-widget__description,
.dashboard-widget__note {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
}

.dashboard-widget__body {
  display: grid;
  gap: var(--space-4);
}

.dashboard-widget__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: auto;
}

.dashboard-widget__metrics,
.dashboard-welcome__stats,
.system-info-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 110px), 1fr));
  gap: var(--space-3);
}

.dashboard-metric,
.system-info-metric {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  background: var(--color-surface-muted);
}

.dashboard-metric__icon,
.system-info-metric__icon {
  font-size: var(--text-xl);
}

.dashboard-metric__value,
.system-info-metric__value {
  overflow-wrap: anywhere;
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  line-height: 1.1;
  color: var(--color-text-strong);
}

.dashboard-metric__label,
.system-info-metric__label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-soft);
}

.dashboard-progress-widget__value,
.dashboard-system-health__score {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: var(--font-extrabold);
  line-height: 1;
  color: var(--color-text-brand);
}

.dashboard-mini-progress,
.progress-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
}

.dashboard-mini-progress__track,
.progress-line__track {
  position: relative;
  overflow: hidden;
  height: 10px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
}

.dashboard-mini-progress__bar,
.progress-line__bar {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--gradient-brand);
  transition: width var(--duration-slow) var(--ease-standard);
}

.dashboard-mini-progress__value,
.progress-line__value {
  font-size: var(--text-xs);
  font-weight: var(--font-extrabold);
  color: var(--color-text-muted);
}

.dashboard-simple-list,
.dashboard-check-list {
  display: grid;
  gap: var(--space-2);
  padding: 0;
  margin: 0;
  list-style: none;
}

.dashboard-simple-list li,
.dashboard-check-list li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-xl);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
}

.dashboard-empty-hint {
  padding: var(--space-4);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-2xl);
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
}

.dashboard-quick-start {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* ============================================================
   28. Quick Actions
============================================================ */

.quick-actions__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
  gap: var(--space-4);
}

.quick-action {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  min-height: 92px;
  padding: var(--space-4);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  color: var(--color-text);
  text-align: left;
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition:
    transform var(--transition-normal),
    border-color var(--transition-normal),
    background-color var(--transition-normal),
    box-shadow var(--transition-normal),
    opacity var(--transition-normal);
}

.quick-action:hover {
  border-color: var(--card-border-hover);
  background: var(--card-bg-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.quick-action:focus-visible {
  outline: 3px solid var(--color-border-focus);
  outline-offset: 3px;
}

.quick-action.is-unavailable {
  opacity: 0.55;
  cursor: not-allowed;
}

.quick-action__icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  font-size: 1.45rem;
  background: var(--gradient-glass);
}

.quick-action__content {
  display: grid;
  gap: var(--space-1);
  min-width: 0;
}

.quick-action__label {
  color: var(--color-text-strong);
}

.quick-action__description {
  font-size: var(--text-xs);
  line-height: var(--leading-snug);
  color: var(--color-text-muted);
}

.quick-action__badge {
  align-self: start;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-full);
  font-size: 0.68rem;
  font-weight: var(--font-extrabold);
  color: var(--badge-text);
  background: var(--badge-bg);
}

/* ============================================================
   29. Recent Modules and Favorites
============================================================ */

.recent-modules__list,
.favorite-modules__list {
  display: grid;
  gap: var(--space-4);
}

.recent-modules__item,
.favorite-modules__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--transition-normal),
    border-color var(--transition-normal),
    box-shadow var(--transition-normal);
}

.recent-modules__item:hover,
.favorite-modules__item:hover {
  border-color: var(--card-border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.recent-modules__item-icon,
.favorite-modules__item-icon {
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  font-size: 1.7rem;
  background: var(--gradient-glass);
}

.recent-modules__item-content,
.favorite-modules__item-content {
  display: grid;
  gap: var(--space-2);
  min-width: 0;
}

.recent-modules__item-header,
.favorite-modules__item-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.recent-modules__item-title,
.favorite-modules__item-title {
  font-size: var(--text-lg);
  color: var(--color-text-strong);
}

.recent-modules__item-description,
.favorite-modules__item-description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.recent-modules__meta,
.favorite-modules__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-soft);
}

.recent-modules__meta span,
.favorite-modules__meta span {
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
}

.recent-modules__item-actions,
.favorite-modules__item-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-2);
}

.recent-modules__badge,
.favorite-modules__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  width: fit-content;
  padding: 0.28rem 0.55rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--badge-text);
  background: var(--badge-bg);
}

.favorite-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-width: 42px;
  min-height: 42px;
  padding: 0.55rem 0.78rem;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    color var(--transition-fast),
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.favorite-button:hover {
  color: var(--color-warning-strong);
  background: var(--badge-warning-bg);
  transform: translateY(-1px);
}

.favorite-button.is-favorited {
  color: var(--badge-warning-text);
  border-color: var(--badge-warning-border);
  background: var(--badge-warning-bg);
}

.favorite-button__icon {
  font-size: 1.1rem;
}

/* ============================================================
   30. Search Box
============================================================ */

.search-box {
  display: grid;
  gap: var(--space-5);
}

.search-box__form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-2xl);
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
}

.search-box__input {
  min-height: 50px;
  padding-inline: var(--space-4);
  border-radius: var(--radius-xl);
}

.search-box__results {
  display: grid;
  gap: var(--space-4);
}

.search-result {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2xl);
  background: var(--color-surface);
}

.search-result__title {
  color: var(--color-text-strong);
}

.search-result__description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.search-result__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================================
   31. Settings, Data Status, System Info
============================================================ */

.settings-panel__grid,
.data-status-panel__grid,
.system-info-panel__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 290px), 1fr));
  gap: var(--space-5);
}

.settings-section,
.data-status-section,
.system-info-section {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
}

.settings-section__header,
.data-status-section__header,
.system-info-section__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.settings-section__icon,
.data-status-section__icon,
.system-info-section__icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  font-size: 1.35rem;
  background: var(--gradient-glass);
}

.settings-section__title,
.data-status-section__title,
.system-info-section__title {
  font-size: var(--text-lg);
  color: var(--color-text-strong);
}

.settings-section__description,
.data-status-section__description,
.system-info-section__description,
.system-info-note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.system-info-kv-list {
  display: grid;
  gap: var(--space-2);
  margin: 0;
}

.system-info-kv {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-xl);
  background: var(--color-surface-muted);
}

.system-info-kv dt {
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-text-soft);
}

.system-info-kv dd {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-text-strong);
  text-align: right;
  overflow-wrap: anywhere;
}

.system-info-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.36rem 0.68rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
}

.system-info-badge.is-success {
  color: var(--badge-success-text);
  background: var(--badge-success-bg);
}

.system-info-badge.is-muted {
  color: var(--color-text-soft);
  background: var(--color-surface-muted);
}

.system-info-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.system-info-chip {
  padding: 0.32rem 0.58rem;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
}

.system-info-panel__actions,
.data-status-panel__actions,
.settings-panel__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ============================================================
   32. Help Panel
============================================================ */

.help-panel__hint {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--badge-border);
  border-radius: var(--radius-2xl);
  color: var(--badge-text);
  background: var(--badge-bg);
}

.help-quick-start {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.help-panel__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: var(--space-2);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2xl);
  background: var(--glass-bg);
}

.help-panel__nav-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 38px;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-text-muted);
}

.help-panel__nav-item:hover {
  color: var(--color-text-brand);
  background: var(--button-ghost-bg-hover);
}

.help-panel__sections {
  display: grid;
  gap: var(--space-5);
}

.help-section {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  background: var(--card-bg);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: 110px;
}

.help-section__header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.help-section__icon {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  font-size: 1.45rem;
  background: var(--gradient-glass);
}

.help-section__title {
  font-size: var(--text-xl);
  color: var(--color-text-strong);
}

.help-section__description,
.help-section__content,
.help-item__text,
.help-faq__answer {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
}

.help-steps {
  display: grid;
  gap: var(--space-3);
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: help-step;
}

.help-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: var(--space-3);
  counter-increment: help-step;
}

.help-step__marker {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border-radius: var(--radius-full);
  color: var(--button-primary-text);
  background: var(--button-primary-bg);
}

.help-step__marker::before {
  content: counter(help-step);
  font-size: var(--text-xs);
  font-weight: var(--font-extrabold);
}

.help-item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
  gap: var(--space-4);
}

.help-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2xl);
  background: var(--color-surface-muted);
}

.help-item__icon {
  font-size: 1.4rem;
}

.help-item__title {
  color: var(--color-text-strong);
}

.help-faq-list {
  display: grid;
  gap: var(--space-3);
}

.help-faq {
  padding: var(--space-4);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2xl);
  background: var(--color-surface-muted);
}

.help-faq__question {
  cursor: pointer;
  font-weight: var(--font-bold);
  color: var(--color-text-strong);
}

.help-faq__answer {
  margin-top: var(--space-3);
}

/* ============================================================
   33. Loading Screen
============================================================ */

.has-loading-screen {
  overflow: hidden;
}

.loading-screen {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: var(--space-5);
}

.loading-screen__backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.22), transparent 38%),
    radial-gradient(circle at bottom right, rgba(124, 58, 237, 0.22), transparent 36%),
    var(--color-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.loading-screen__card {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(100%, 520px);
  gap: var(--space-5);
  padding: var(--space-8);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-modal);
  text-align: center;
  background: var(--glass-bg-strong);
  box-shadow: var(--shadow-xl);
}

.loading-screen__logo,
.loading-screen__logo-mark {
  display: grid;
  place-items: center;
}

.loading-screen__logo-mark {
  width: 82px;
  height: 82px;
  margin-inline: auto;
  border-radius: var(--radius-2xl);
  font-size: 2.8rem;
  background: var(--gradient-brand);
  box-shadow: var(--shadow-lg);
}

.loading-screen__spinner {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
}

.loading-screen__spinner span {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--color-brand-600);
  animation: edulab-loading-dot 0.9s ease-in-out infinite alternate;
}

.loading-screen__spinner span:nth-child(2) {
  animation-delay: 0.15s;
}

.loading-screen__spinner span:nth-child(3) {
  animation-delay: 0.3s;
}

.loading-screen__content {
  display: grid;
  gap: var(--space-3);
}

.loading-screen__app-name {
  font-size: var(--text-sm);
  font-weight: var(--font-extrabold);
  color: var(--color-text-brand);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.loading-screen__tagline,
.loading-screen__message,
.loading-screen__step {
  color: var(--color-text-muted);
}

.loading-screen__title {
  font-size: var(--text-3xl);
  color: var(--color-text-strong);
}

.loading-screen__progress {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.loading-screen__progress-track {
  overflow: hidden;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
}

.loading-screen__progress-bar {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--gradient-brand);
}

.loading-screen__progress-value {
  font-size: var(--text-xs);
  font-weight: var(--font-extrabold);
  color: var(--color-text-muted);
}

.loading-screen.is-leaving {
  animation: edulab-fade-out var(--duration-normal) var(--ease-standard) both;
}

/* ============================================================
   34. Onboarding Tour
============================================================ */

.onboarding-tour {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: var(--space-5);
}

.onboarding-tour__backdrop {
  position: absolute;
  inset: 0;
  background: var(--overlay-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.onboarding-tour__card {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(100%, 520px);
  gap: var(--space-5);
  padding: var(--space-6);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-modal);
  background: var(--color-surface-solid);
  box-shadow: var(--shadow-xl);
}

.onboarding-tour__progress {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
}

.onboarding-tour__progress-track {
  overflow: hidden;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-surface-muted);
}

.onboarding-tour__progress-bar {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--gradient-brand);
}

.onboarding-tour__counter {
  font-size: var(--text-xs);
  font-weight: var(--font-extrabold);
  color: var(--color-text-muted);
}

.onboarding-tour__step {
  display: grid;
  gap: var(--space-3);
  text-align: center;
}

.onboarding-tour__icon {
  display: grid;
  width: 72px;
  height: 72px;
  place-items: center;
  margin-inline: auto;
  border-radius: var(--radius-2xl);
  font-size: 2.1rem;
  background: var(--gradient-glass);
  box-shadow: var(--shadow-sm);
}

.onboarding-tour__title {
  font-size: var(--text-3xl);
  color: var(--color-text-strong);
}

.onboarding-tour__description {
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.onboarding-tour__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.onboarding-tour__actions-left,
.onboarding-tour__actions-right {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.is-onboarding-target {
  position: relative;
  z-index: calc(var(--z-modal) + 1);
  outline: 4px solid var(--color-brand-500);
  outline-offset: 5px;
  border-radius: var(--radius-2xl);
}

/* ============================================================
   35. Update Toast and Offline Banner
============================================================ */

.update-toast,
.offline-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  background: var(--color-surface-solid);
  box-shadow: var(--shadow-lg);
}

.update-toast__icon,
.offline-banner__icon {
  display: grid;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: var(--radius-full);
  background: var(--badge-bg);
}

.update-toast__content,
.offline-banner__content {
  display: grid;
  gap: var(--space-2);
  min-width: 0;
}

.update-toast__title,
.offline-banner__title {
  font-size: var(--text-base);
  color: var(--color-text-strong);
}

.update-toast__message,
.offline-banner__message {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.update-toast__actions,
.offline-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.update-toast__close {
  display: grid;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
}

.offline-banner {
  position: fixed;
  left: 50%;
  bottom: var(--space-5);
  z-index: var(--z-toast);
  width: min(calc(100% - var(--space-8)), 720px);
  transform: translateX(-50%);
}

.offline-banner--online {
  border-color: var(--badge-success-border);
}

.offline-banner--offline {
  border-color: var(--badge-warning-border);
}

/* ============================================================
   36. App Error Boundary
============================================================ */

.app-error-boundary {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: var(--space-6);
  background:
    radial-gradient(circle at top left, rgba(239, 68, 68, 0.14), transparent 34%),
    var(--color-bg);
}

.app-error-boundary__card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-5);
  width: min(100%, 760px);
  padding: var(--space-7);
  border: 1px solid var(--badge-danger-border);
  border-radius: var(--radius-modal);
  background: var(--color-surface-solid);
  box-shadow: var(--shadow-xl);
}

.app-error-boundary__icon {
  display: grid;
  width: 70px;
  height: 70px;
  place-items: center;
  border-radius: var(--radius-2xl);
  font-size: 2rem;
  background: var(--badge-danger-bg);
}

.app-error-boundary__content {
  display: grid;
  gap: var(--space-4);
}

.app-error-boundary__title {
  font-size: var(--text-3xl);
  color: var(--color-text-strong);
}

.app-error-boundary__message,
.app-error-boundary__error-message {
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.app-error-boundary__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.app-error-boundary__details {
  padding: var(--space-4);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-2xl);
  background: var(--color-surface-muted);
}

.app-error-boundary__details-summary {
  cursor: pointer;
  font-weight: var(--font-bold);
  color: var(--color-text-strong);
}

.app-error-boundary__stack {
  overflow: auto;
  max-height: 260px;
  margin-top: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-xl);
  font-size: var(--text-xs);
  background: var(--color-slate-900);
  color: #ffffff;
}

/* ============================================================
   37. Modal Size Enhancements
============================================================ */

.modal--sm {
  width: min(100%, 420px);
}

.modal--lg {
  width: min(100%, 760px);
}

.modal--xl {
  width: min(100%, 980px);
}

.modal--full {
  width: min(100%, 1180px);
}

.diagnostics-report-modal pre,
.system-info-diagnostics-modal pre {
  overflow: auto;
  max-height: 460px;
  padding: var(--space-4);
  border-radius: var(--radius-xl);
  background: var(--color-surface-muted);
}

/* ============================================================
   38. PWA Install Button
============================================================ */

.pwa-install-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0.7rem 1rem;
  border: 1px solid var(--button-secondary-border);
  border-radius: var(--radius-full);
  font-weight: var(--font-bold);
  color: var(--button-secondary-text);
  background: var(--button-secondary-bg);
  box-shadow: var(--shadow-sm);
}

.pwa-install-button:hover {
  background: var(--button-secondary-bg-hover);
  transform: translateY(-1px);
}

.pwa-install-button[hidden] {
  display: none !important;
}

/* ============================================================
   39. Utility Component States
============================================================ */

.is-hidden,
[hidden] {
  display: none !important;
}

.text-soft {
  color: var(--color-text-soft);
}

.text-muted {
  color: var(--color-text-muted);
}

.text-strong {
  color: var(--color-text-strong);
}

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

.empty-state__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}

/* ============================================================
   40. Additional Animations
============================================================ */

@keyframes edulab-loading-dot {
  from {
    opacity: 0.35;
    transform: translateY(0);
  }

  to {
    opacity: 1;
    transform: translateY(-8px);
  }
}

@keyframes edulab-fade-out {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
    visibility: hidden;
  }
}

/* ============================================================
   41. Responsive Component Upgrade
============================================================ */

@media (max-width: 860px) {
  .dashboard-widgets__header,
  .quick-actions__header,
  .recent-modules__header,
  .favorite-modules__header,
  .system-info-panel__header,
  .help-panel__header {
    display: grid;
  }

  .recent-modules__item,
  .favorite-modules__item {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .recent-modules__item-actions,
  .favorite-modules__item-actions {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .app-error-boundary__card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .app-error-boundary__icon {
    margin-inline: auto;
  }
}

@media (max-width: 640px) {
  .dashboard-widgets__title,
  .quick-actions__title,
  .recent-modules__title,
  .favorite-modules__title,
  .system-info-panel__title,
  .help-panel__title,
  .onboarding-tour__title,
  .loading-screen__title,
  .app-error-boundary__title {
    font-size: var(--text-2xl);
  }

  .quick-action {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .quick-action__badge {
    grid-column: 1 / -1;
    width: fit-content;
  }

  .search-box__form {
    grid-template-columns: 1fr;
  }

  .system-info-kv {
    grid-template-columns: 1fr;
  }

  .system-info-kv dd {
    text-align: left;
  }

  .onboarding-tour,
  .loading-screen {
    padding: var(--space-3);
  }

  .onboarding-tour__card,
  .loading-screen__card {
    padding: var(--space-5);
    border-radius: var(--radius-2xl);
  }

  .onboarding-tour__actions {
    display: grid;
  }

  .onboarding-tour__actions-left,
  .onboarding-tour__actions-right {
    justify-content: stretch;
  }

  .onboarding-tour__actions .button {
    width: 100%;
  }

  .offline-banner {
    bottom: var(--space-3);
    width: calc(100% - var(--space-6));
  }
}