/* Classroom Reports - analytics dashboard */

.classroom-reports-page {
  --cr-accent: var(--color-primary);
  --cr-accent-soft: rgba(124, 115, 255, 0.12);
  --cr-accent-glow: rgba(124, 115, 255, 0.28);
  --cr-card-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
  --cr-radius: 14px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  overflow: hidden;
  padding: 1rem 1.25rem 1.5rem;
  background:
    radial-gradient(ellipse 80% 50% at 100% -10%, var(--cr-accent-soft), transparent 55%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(255, 107, 107, 0.06), transparent 50%),
    var(--color-page-bg);
  color: var(--color-text);
}

#app.classroom-view .classroom-reports-page {
  height: 100%;
}

/* Hero */
.classroom-reports-hero {
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--cr-accent-soft) 0%, transparent 55%),
    var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--cr-radius) + 4px);
  padding: 1rem 1.15rem 1.1rem;
  margin-bottom: 0.85rem;
  box-shadow: var(--cr-card-shadow);
}

.classroom-reports-hero-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-bottom: 0.9rem;
}

.classroom-reports-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--color-border);
  background: var(--color-background);
  color: var(--color-text);
  border-radius: 10px;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.classroom-reports-back:hover {
  background: var(--cr-accent-soft);
  border-color: rgba(124, 115, 255, 0.35);
  color: var(--color-primary);
}

.classroom-reports-heading {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex: 1;
  min-width: 0;
}

.classroom-reports-hero-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  font-size: 1.25rem;
  box-shadow: 0 8px 20px var(--cr-accent-glow);
  flex-shrink: 0;
}

.classroom-reports-heading-text {
  min-width: 0;
}

.classroom-reports-heading h1 {
  margin: 0;
  font-family: Cinzel, Georgia, serif;
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  letter-spacing: 0.02em;
  color: var(--color-text);
  line-height: 1.2;
}

.classroom-reports-sub {
  margin: 0.2rem 0 0;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.classroom-reports-range-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--cr-accent-soft);
  color: var(--color-primary-text);
  border: 1px solid rgba(124, 115, 255, 0.22);
  white-space: nowrap;
}

.classroom-reports-range-badge--muted {
  opacity: 0.45;
}

/* Date toolbar */
.classroom-reports-range {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.75rem 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--color-border);
}

.classroom-reports-range--hidden {
  display: none;
}

.classroom-reports-preset-group {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.3rem;
  padding: 0.3rem;
  background: var(--color-background-alt);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.classroom-reports-preset-group::-webkit-scrollbar {
  display: none;
}

.classroom-reports-preset-btn {
  flex-shrink: 0;
  padding: 0.45rem 0.8rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}

.classroom-reports-preset-btn:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.classroom-reports-preset-btn.active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
}

.classroom-reports-toolbar-dates {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.55rem 0.65rem;
  flex: 1;
  min-width: 0;
}

.classroom-reports-date-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  min-width: 0;
}

.classroom-reports-date-input {
  min-width: 0;
  width: 100%;
  max-width: 160px;
  padding: 0.5rem 0.65rem;
  border-radius: 10px;
  border: 1px solid var(--color-input-border);
  background: var(--color-input-bg);
  color: var(--color-input-text);
  font-size: 0.875rem;
  font-weight: 500;
}

.classroom-reports-date-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--cr-accent-soft);
}

.classroom-reports-apply-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  border: none;
  border-radius: 10px;
  background: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  cursor: pointer;
  box-shadow: 0 4px 14px var(--cr-accent-glow);
  transition: transform 0.12s, box-shadow 0.12s;
  white-space: nowrap;
}

.classroom-reports-apply-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px var(--cr-accent-glow);
}

.classroom-reports-apply-btn:active {
  transform: translateY(0);
}

/* Tabs */
.classroom-reports-tabs {
  flex-shrink: 0;
  display: flex;
  flex-wrap: nowrap;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  padding-bottom: 0.2rem;
  scroll-snap-type: x proximity;
}

.classroom-reports-tab {
  flex-shrink: 0;
  scroll-snap-align: start;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border-radius: 999px;
  padding: 0.5rem 0.95rem;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.classroom-reports-tab:hover {
  color: var(--color-text);
  border-color: rgba(124, 115, 255, 0.35);
}

.classroom-reports-tab.active {
  background: linear-gradient(145deg, var(--color-primary), var(--color-primary-dark));
  border-color: transparent;
  color: var(--color-on-primary);
  box-shadow: 0 4px 12px var(--cr-accent-glow);
}

/* Loading & content */
.classroom-reports-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex: 1;
  min-height: 12rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.classroom-reports-spinner {
  width: 22px;
  height: 22px;
  border: 3px solid var(--cr-accent-soft);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: classroom-reports-spin 0.7s linear infinite;
}

@keyframes classroom-reports-spin {
  to { transform: rotate(360deg); }
}

.classroom-reports-loading--hidden,
.classroom-reports-content--hidden {
  display: none !important;
}

.classroom-reports-content {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 1.5rem;
}

/* Sections & panels */
.classroom-reports-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--cr-radius);
  padding: 1.15rem 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--cr-card-shadow);
}

.classroom-reports-section-head {
  margin-bottom: 1rem;
}

.classroom-reports-section-head h2 {
  margin: 0 0 0.35rem;
}

.classroom-reports-section-head .classroom-reports-hint {
  margin: 0;
}

.classroom-reports-section h2 {
  margin: 0 0 1rem;
  font-size: 1.15rem;
  color: var(--color-text);
  font-weight: 700;
}

.classroom-reports-section h3 {
  margin: 0 0 0.75rem;
  font-size: 0.92rem;
  color: var(--color-text);
  font-weight: 700;
}

.classroom-reports-section > h3 {
  margin-top: 1.25rem;
}

/* Stat cards */
.classroom-reports-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.classroom-reports-stat-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--color-background-alt);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  text-align: left;
  transition: transform 0.15s, box-shadow 0.15s;
}

.classroom-reports-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--cr-card-shadow);
}

.classroom-reports-stat-icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  font-size: 1rem;
  background: var(--cr-accent-soft);
  color: var(--color-primary);
}

.classroom-reports-stat-card--primary .classroom-reports-stat-icon {
  background: var(--cr-accent-soft);
  color: var(--color-primary);
}

.classroom-reports-stat-card--danger .classroom-reports-stat-icon {
  background: rgba(239, 68, 68, 0.12);
  color: var(--color-danger);
}

.classroom-reports-stat-card--warning .classroom-reports-stat-icon {
  background: rgba(249, 115, 22, 0.12);
  color: var(--color-warning);
}

.classroom-reports-stat-card--info .classroom-reports-stat-icon {
  background: rgba(14, 165, 233, 0.12);
  color: var(--color-info);
}

.classroom-reports-stat-card--success .classroom-reports-stat-icon {
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-success);
}

.classroom-reports-stat-card--muted .classroom-reports-stat-icon {
  background: var(--color-background-secondary);
  color: var(--color-text-secondary);
}

.classroom-reports-stat-body {
  min-width: 0;
}

.classroom-reports-stat-value {
  display: block;
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--color-primary-light);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.classroom-reports-stat-label {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  font-weight: 600;
  line-height: 1.25;
}

/* Grid & charts */
.classroom-reports-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1rem;
}

.classroom-reports-panel {
  background: var(--color-background-alt);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1rem;
  color: var(--color-text);
}

.classroom-reports-chart-wrap {
  position: relative;
  height: 280px;
}

.classroom-reports-panel--chart .classroom-reports-chart-wrap {
  height: 260px;
}

.classroom-reports-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 8px;
}

.classroom-reports-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  min-width: 420px;
}

.classroom-reports-table th,
.classroom-reports-table td {
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  color: var(--color-text);
}

.classroom-reports-table tbody tr:hover td {
  background: var(--cr-accent-soft);
}

.classroom-reports-table th {
  color: var(--color-text-secondary);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
  white-space: nowrap;
}

.classroom-reports-empty,
.classroom-reports-note,
.classroom-reports-hint,
.classroom-reports-error {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.45;
}

.classroom-reports-note {
  background: var(--color-background-alt);
  border: 1px dashed var(--color-border);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  margin-bottom: 1rem;
}

.classroom-reports-error {
  color: #b91c1c;
  padding: 1.5rem;
  text-align: center;
}

.header-reports-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.btn-reports {
  position: relative;
  gap: 0;
  font-size: 1.25rem;
  line-height: 1;
}

.btn-reports i {
  font-size: 1.25rem;
  line-height: 1;
}

.classroom-reports-panel--full {
  grid-column: 1 / -1;
  margin-top: 1rem;
}

.classroom-reports-run-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.classroom-reports-run {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  overflow: hidden;
}

.classroom-reports-run > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.85rem;
  padding: 0.75rem 1rem;
  cursor: pointer;
  list-style: none;
  font-size: 0.9rem;
  transition: background 0.12s;
}

.classroom-reports-run > summary:hover {
  background: var(--cr-accent-soft);
}

.classroom-reports-run > summary::-webkit-details-marker {
  display: none;
}

.classroom-reports-run > summary::before {
  content: '▸';
  color: var(--color-primary);
  font-size: 0.75rem;
  transition: transform 0.15s ease;
}

.classroom-reports-run[open] > summary::before {
  transform: rotate(90deg);
}

.classroom-reports-run-title {
  font-weight: 700;
  color: var(--color-text);
}

.classroom-reports-run-meta {
  color: var(--color-text-secondary);
  font-size: 0.82rem;
}

.classroom-reports-status {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: capitalize;
}

.classroom-reports-status--victory {
  background: #dcfce7;
  color: #166534;
}

.classroom-reports-status--failed,
.classroom-reports-status--exhausted {
  background: #fee2e2;
  color: #991b1b;
}

.classroom-reports-status--abandoned {
  background: #fef3c7;
  color: #92400e;
}

.classroom-reports-status--active,
.classroom-reports-status--in_progress {
  background: #e0e7ff;
  color: #3730a3;
}

.classroom-reports-status--completed {
  background: #dcfce7;
  color: #166534;
}

.classroom-reports-status--adventure-win {
  background: #dcfce7;
  color: #166534;
}

.classroom-reports-status--adventure-timeout {
  background: #fef3c7;
  color: #92400e;
}

.classroom-reports-status--adventure-failed {
  background: #ffedd5;
  color: #c2410c;
}

.classroom-reports-status--adventure-abandon {
  background: #f1f5f9;
  color: var(--color-text-secondary);
}

.classroom-reports-run-body {
  padding: 0 1rem 1rem;
  border-top: 1px solid var(--color-border);
}

.classroom-reports-run-body h4 {
  margin: 0.75rem 0 0.35rem;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
}

.classroom-reports-run-body h4:first-child {
  margin-top: 0.65rem;
}

.classroom-reports-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.classroom-reports-tag {
  background: var(--color-brand-hover-bg);
  color: var(--color-primary-light);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.8rem;
}

.classroom-reports-nested-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.35rem;
  min-width: 360px;
}

.classroom-reports-nested-table th,
.classroom-reports-nested-table td {
  padding: 0.4rem 0.5rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  color: var(--color-text);
}

.classroom-reports-nested-table th {
  color: var(--color-text-secondary);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.classroom-reports-side-block {
  font-size: 0.85rem;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.classroom-reports-section--activity-log {
  padding-bottom: 0;
}

.classroom-reports-audit-log {
  margin-top: 0.5rem;
}

.audit-log-panel--inline {
  width: 100%;
  max-height: none;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
}

.audit-log-header--inline {
  padding: 12px 18px 0;
  border-bottom: none;
  background: transparent;
}

.audit-log-header--inline .audit-log-header-sub {
  margin: 0;
}

.audit-log-panel--inline .audit-log-body {
  max-height: min(62vh, 720px);
  overflow-y: auto;
}

/* Tablet */
@media (max-width: 900px) {
  .classroom-reports-hero-top {
    align-items: flex-start;
  }

  .classroom-reports-range {
    flex-direction: column;
    align-items: stretch;
  }

  .classroom-reports-toolbar-dates {
    width: 100%;
  }

  .classroom-reports-date-field {
    flex: 1 1 calc(50% - 0.4rem);
  }

  .classroom-reports-date-input {
    max-width: none;
  }

  .classroom-reports-apply-btn {
    flex: 1 1 100%;
    margin-top: 0.15rem;
  }
}

/* Mobile */
@media (max-width: 720px) {
  .classroom-reports-page {
    padding: 0.75rem 0.75rem 1rem;
  }

  .classroom-reports-hero {
    padding: 0.85rem 0.9rem;
    border-radius: 14px;
  }

  .classroom-reports-hero-icon {
    width: 40px;
    height: 40px;
    border-radius: 11px;
    font-size: 1.05rem;
  }

  .classroom-reports-heading h1 {
    font-size: 1.2rem;
  }

  .classroom-reports-range-badge {
    width: 100%;
    justify-content: center;
    order: 3;
  }

  .classroom-reports-preset-group {
    width: 100%;
  }

  .classroom-reports-preset-btn {
    flex: 1;
    text-align: center;
    padding: 0.55rem 0.5rem;
    font-size: 0.78rem;
  }

  .classroom-reports-toolbar-dates {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.55rem;
  }

  .classroom-reports-date-field {
    flex: none;
  }

  .classroom-reports-apply-btn {
    grid-column: 1 / -1;
    width: 100%;
    padding: 0.7rem 1rem;
  }

  .classroom-reports-tab {
    padding: 0.55rem 0.85rem;
    font-size: 0.8rem;
  }

  .classroom-reports-section {
    padding: 1rem;
    border-radius: 12px;
  }

  .classroom-reports-stats {
    grid-template-columns: 1fr 1fr;
    gap: 0.55rem;
  }

  .classroom-reports-stat-card {
    padding: 0.75rem;
    gap: 0.55rem;
  }

  .classroom-reports-stat-icon {
    width: 34px;
    height: 34px;
    border-radius: 9px;
    font-size: 0.85rem;
  }

  .classroom-reports-stat-value {
    font-size: 1.3rem;
  }

  .classroom-reports-chart-wrap,
  .classroom-reports-panel--chart .classroom-reports-chart-wrap {
    height: 220px;
  }

  .classroom-reports-run > summary {
    padding: 0.7rem 0.8rem;
  }

  .audit-log-panel--inline .audit-log-body {
    max-height: min(55vh, 520px);
  }
}

@media (max-width: 420px) {
  .classroom-reports-stats {
    grid-template-columns: 1fr;
  }

  .classroom-reports-back span {
    display: none;
  }

  .classroom-reports-chart-wrap,
  .classroom-reports-panel--chart .classroom-reports-chart-wrap {
    height: 200px;
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  .classroom-reports-spinner {
    animation: none;
    border-top-color: transparent;
    border-color: var(--color-primary);
  }

  .classroom-reports-stat-card,
  .classroom-reports-apply-btn,
  .classroom-reports-tab,
  .classroom-reports-back {
    transition: none;
  }

  .classroom-reports-stat-card:hover,
  .classroom-reports-apply-btn:hover {
    transform: none;
  }
}