:root {
  --sky: #dff5ff;
  --shell: #edf7ff;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --surface-soft: #f5fbff;
  --border: rgba(20, 48, 107, 0.12);
  --border-strong: rgba(20, 48, 107, 0.18);
  --shadow: 0 12px 24px rgba(20, 48, 107, 0.08);
  --toy-blue: #14306b;
  --toy-cyan: #22c3e6;
  --toy-yellow: #ffd23f;
  --toy-red: #e2483a;
  --toy-green: #24a46d;
  --toy-wood: #f3c678;
  --teacher-warn: #fff2b8;
  --teacher-warn-ink: #664c00;
  --teacher-danger: #fee4de;
  --teacher-danger-ink: #9f2f22;
  --teacher-progress: #ddf7ef;
  --teacher-progress-ink: #0f6f59;
  --parent-hero: linear-gradient(135deg, #14306b 0%, #0f8eb0 100%);
  --parent-mint: #e8fbf3;
  --parent-mint-ink: #0c5d48;
  --chart-grid: rgba(148, 163, 184, 0.22);
  --code-bg: linear-gradient(180deg, #0f172a 0%, #131d37 100%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(140deg, rgba(34, 195, 230, 0.05) 0 9%, transparent 9% 100%),
    linear-gradient(222deg, rgba(255, 210, 63, 0.07) 0 7%, transparent 7% 100%),
    linear-gradient(180deg, #f9fdff 0%, #f1faff 58%, #fffaf0 100%);
  color: var(--ink);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: auto 0 0;
  height: 72px;
  pointer-events: none;
  background:
    linear-gradient(
      90deg,
      transparent 0 8%,
      rgba(20, 48, 107, 0.025) 8% 15%,
      transparent 15% 28%,
      rgba(226, 72, 58, 0.03) 28% 35%,
      transparent 35% 55%,
      rgba(255, 210, 63, 0.05) 55% 63%,
      transparent 63% 80%,
      rgba(36, 164, 109, 0.03) 80% 88%,
      transparent 88% 100%
    ),
    linear-gradient(
      180deg,
      transparent 0%,
      rgba(243, 198, 120, 0.08) 58%,
      rgba(243, 198, 120, 0.12) 100%
    );
  z-index: -1;
}

button,
input {
  font: inherit;
}

.page {
  max-width: 1480px;
  margin: 0 auto;
  padding: 28px;
  position: relative;
}

.page-header {
  display: grid;
  gap: 18px;
  margin-bottom: 22px;
}

.header-top {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.header-copy {
  max-width: 860px;
  display: grid;
  gap: 10px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 210, 63, 0.42);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-header h1 {
  margin: 0;
  color: var(--primary);
  font-size: 3rem;
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.page-header p {
  margin: 0;
  color: #425066;
  font-size: 1.06rem;
  line-height: 1.6;
  max-width: 72ch;
  text-wrap: pretty;
}

.header-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.header-stat {
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  min-width: 160px;
}

.header-stat:nth-child(1) {
  border-top: 4px solid var(--toy-cyan);
}

.header-stat:nth-child(2) {
  border-top: 4px solid var(--toy-yellow);
}

.header-stat:nth-child(3) {
  border-top: 4px solid var(--toy-red);
}

.header-stat-label {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.header-stat-value {
  margin-top: 6px;
  color: var(--primary);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.05;
}

.header-stat-note {
  margin-top: 4px;
  color: #556277;
  font-size: 0.88rem;
}

.hero-banner {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 14px;
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background:
    linear-gradient(90deg, rgba(255, 210, 63, 0.16), transparent 34%),
    rgba(255, 255, 255, 0.78);
}

.hero-banner-card {
  position: relative;
  overflow: hidden;
  padding: 18px;
  border-radius: 14px;
  background: linear-gradient(
    135deg,
    rgba(20, 48, 107, 0.98),
    rgba(15, 142, 176, 0.96)
  );
  color: #eff6ff;
}

.hero-banner-card::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: -18px;
  width: 112px;
  height: 72px;
  background: linear-gradient(
    90deg,
    var(--toy-red) 0 32%,
    var(--toy-yellow) 32% 66%,
    var(--toy-green) 66% 100%
  );
  border-radius: 12px 12px 0 0;
  opacity: 0.26;
  transform: rotate(-3deg);
}

.hero-banner-card strong {
  display: block;
  font-size: 1.04rem;
  margin-bottom: 6px;
}

.hero-banner-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.hero-mini {
  padding: 16px;
  border-radius: 14px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
}

.hero-mini-title {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-mini-value {
  margin-top: 6px;
  color: var(--primary);
  font-size: 1.36rem;
  font-weight: 800;
}

.main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(380px, 0.92fr);
  gap: 18px;
  align-items: start;
}

.panel {
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.replay-panel {
  padding: 18px;
  display: grid;
  gap: 16px;
  align-content: flex-start;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.panel-head h2,
.right-panel h2 {
  margin: 0;
  font-size: 1.36rem;
  color: var(--primary);
}

.panel-kicker {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.panel-subtitle {
  margin-top: 4px;
  color: #556277;
  font-size: 0.95rem;
}

.head-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(34, 195, 230, 0.14);
  color: var(--primary);
  font-size: 0.86rem;
  font-weight: 700;
}

.button-primary,
.tab-button,
.event-chip,
.story-item,
.evidence-item {
  transition:
    background-color 160ms ease,
    border-color 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.button-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  background: linear-gradient(180deg, #ffe070, var(--toy-yellow));
  color: var(--primary);
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 3px 0 rgba(20, 48, 107, 0.18);
  text-decoration: none;
}

.button-primary svg {
  width: 1.05rem;
  height: 1.05rem;
  flex: none;
  fill: currentColor;
}

.button-primary:hover,
.tab-button:hover,
.event-chip:hover,
.story-item:hover,
.evidence-item:hover {
  transform: translateY(-1px);
}

.code-stage {
  display: grid;
  gap: 14px;
}

.timeline {
  width: 100%;
  accent-color: var(--accent-cyan);
}

.event-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.event-chip {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 999px;
  padding: 8px 12px;
  color: #455366;
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.event-chip[data-tone="warning"] {
  background: var(--teacher-warn);
  color: var(--teacher-warn-ink);
  border-color: rgba(255, 210, 63, 0.46);
}

.event-chip[data-tone="danger"] {
  background: var(--teacher-danger);
  color: var(--teacher-danger-ink);
  border-color: rgba(226, 72, 58, 0.28);
}

.event-chip[data-tone="progress"] {
  background: var(--teacher-progress);
  color: var(--teacher-progress-ink);
  border-color: rgba(24, 150, 116, 0.25);
}

.event-chip.is-active {
  box-shadow: inset 0 0 0 1px rgba(20, 48, 107, 0.18);
}

.code-shell {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid rgba(130, 154, 191, 0.22);
  background: var(--code-bg);
  max-height: 490px;
}

.code-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      135deg,
      transparent 0 72%,
      rgba(255, 210, 63, 0.12) 72% 84%,
      transparent 84% 100%
    ),
    linear-gradient(225deg, rgba(34, 195, 230, 0.16), transparent 34%);
  pointer-events: none;
  z-index: 1;
}

.code-shell .CodeMirror {
  position: relative;
  z-index: 2;
  min-height: 58vh;
  height: 58vh;
  background: transparent;
  color: #e5edf9;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.94rem;
  line-height: 1.7;
}

.code-shell .CodeMirror-scroll {
  min-height: 58vh;
}

.code-shell .CodeMirror-lines {
  padding: 18px 0;
}

.code-shell .CodeMirror pre.CodeMirror-line,
.code-shell .CodeMirror pre.CodeMirror-line-like {
  padding: 0 18px;
}

.code-shell .CodeMirror-gutters {
  border-right: 1px solid rgba(130, 154, 191, 0.18);
  background: rgba(15, 23, 42, 0.32);
}

.code-shell .CodeMirror-linenumber {
  color: rgba(203, 213, 225, 0.7);
  padding: 0 12px 0 10px;
}

.code-shell .CodeMirror-cursor {
  border-left-color: #e5edf9;
}

.code-shell .cm-keyword {
  color: #7dd3fc;
}

.code-shell .cm-def,
.code-shell .cm-variable {
  color: #e5edf9;
}

.code-shell .cm-number,
.code-shell .cm-builtin {
  color: #fde68a;
}

.code-shell .cm-current-line {
  background: rgba(34, 195, 230, 0.16);
  box-shadow: inset 0 0 0 1px rgba(34, 195, 230, 0.26);
}

.code-shell .cm-preview-line {
  background: rgba(255, 210, 63, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 210, 63, 0.24);
}

.code-shell .cm-current-line.cm-preview-line {
  background: linear-gradient(
    90deg,
    rgba(255, 210, 63, 0.16),
    rgba(34, 195, 230, 0.18)
  );
}

.code-shell .cm-current-preview-line {
  background: linear-gradient(
    90deg,
    rgba(255, 210, 63, 0.16),
    rgba(34, 195, 230, 0.18)
  );
}

.replay-footer {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.footer-card {
  padding: 14px;
  border-radius: 14px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
}

.footer-card-label {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-card strong {
  display: block;
  margin-top: 6px;
  color: var(--primary);
  font-size: 1rem;
}

.footer-card p {
  margin: 6px 0 0;
  color: #5a687d;
  font-size: 0.88rem;
  line-height: 1.5;
}

.right-panel {
  padding: 16px;
  height: 78vh;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: 14px;
  overflow: hidden;
}

.tab-row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.tab-button {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 14px;
  background: #fff;
  color: var(--primary);
  font-weight: 800;
  cursor: pointer;
}

.tab-button[aria-selected="true"] {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 3px 0 rgba(34, 195, 230, 0.28);
}

.insight-grid {
  display: grid;
  gap: 12px;
  grid-auto-rows: max-content;
  align-content: start;
  min-height: 0;
  overflow-y: auto;
  padding-right: 4px;
}

.insight-card {
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  overflow: hidden;
}

.hero-card {
  padding: 18px;
  display: grid;
  gap: 12px;
}

.hero-card.teacher {
  background: linear-gradient(
    135deg,
    rgba(255, 210, 63, 0.38) 0%,
    rgba(255, 255, 255, 0.9) 54%,
    rgba(34, 195, 230, 0.12) 100%
  );
}

.hero-card.parent {
  background: var(--parent-hero);
  color: #f8fbff;
}

.hero-card-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-badge.warning {
  background: rgba(255, 210, 63, 0.18);
  color: #7d5d00;
}

.status-badge.progress {
  background: rgba(214, 250, 240, 0.24);
  color: inherit;
}

.hero-title {
  margin: 0;
  margin-top: 16px;
  font-size: 1.34rem;
  line-height: 1.16;
  text-wrap: balance;
}

.hero-copy {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.55;
  color: inherit;
  opacity: 0.92;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.hero-meta-card {
  padding: 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(20, 48, 107, 0.1);
  color: var(--primary);
}

.hero-card.parent .hero-meta-card {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.12);
  color: #f8fbff;
}

.hero-meta-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.72;
}

.hero-meta-value {
  margin-top: 5px;
  font-size: 1.14rem;
  font-weight: 800;
}

.block-head {
  padding: 14px 16px 0;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.block-title {
  color: var(--primary);
  font-size: 1rem;
  font-weight: 800;
}

.block-note {
  color: #556277;
  font-size: 0.86rem;
}

.story-list {
  padding: 14px 16px 16px;
  display: grid;
  gap: 10px;
}

.story-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
  cursor: pointer;
  text-align: left;
}

.story-item.is-highlighted,
.evidence-item.is-highlighted {
  border-color: rgba(34, 195, 230, 0.38);
  background: linear-gradient(90deg, #f3fbff, #fff9df);
}

.story-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
}

.story-copy strong {
  display: block;
  font-size: 0.94rem;
  color: var(--primary);
}

.story-copy span {
  display: block;
  margin-top: 4px;
  color: #57657a;
  font-size: 0.84rem;
  line-height: 1.45;
}

.story-time {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.chart-card {
  padding: 16px;
  display: grid;
  gap: 14px;
}

.chart-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 14px;
  align-items: stretch;
}

.chart-pane,
.score-pane {
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface-soft);
  padding: 14px;
}

.chart-bars {
  display: flex;
  align-items: end;
  gap: 10px;
  min-height: 128px;
  margin-top: 14px;
}

.chart-bar-group {
  flex: 1;
  display: grid;
  gap: 8px;
  justify-items: center;
}

.chart-bar-track {
  width: 100%;
  min-height: 110px;
  border-radius: 12px 12px 0 0;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.56),
    rgba(207, 220, 237, 0.42)
  );
  display: flex;
  align-items: end;
  padding: 0 6px;
}

.chart-bar {
  width: 100%;
  border-radius: 10px 10px 0 0;
}

.chart-label {
  color: #556277;
  font-size: 0.78rem;
  font-weight: 700;
}

.score-pane {
  display: grid;
  gap: 12px;
  align-content: start;
}

.score-value {
  color: var(--primary);
  font-size: 2.7rem;
  font-weight: 900;
  line-height: 1;
}

.score-note {
  color: #536074;
  font-size: 0.9rem;
  line-height: 1.5;
}

.score-trend {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(34, 195, 230, 0.12);
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 800;
}

.metric-grid {
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metric-card {
  border-radius: 14px;
  padding: 14px;
  border: 1px solid var(--border);
  background: #fff;
}

.metric-label {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.metric-value {
  margin-top: 6px;
  color: var(--primary);
  font-size: 1.52rem;
  font-weight: 850;
  line-height: 1.05;
}

.metric-note {
  margin-top: 6px;
  color: #566478;
  font-size: 0.84rem;
  line-height: 1.45;
}

.evidence-list {
  padding: 0 16px 16px;
  display: grid;
  gap: 10px;
}

.evidence-item {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
  cursor: pointer;
}

.evidence-item strong {
  display: block;
  color: var(--primary);
  font-size: 0.92rem;
}

.evidence-item span {
  display: block;
  margin-top: 5px;
  color: #57657a;
  font-size: 0.84rem;
  line-height: 1.46;
}

@media (max-width: 1180px) {
  .hero-banner,
  .main-grid,
  .chart-layout {
    grid-template-columns: 1fr;
  }

  .right-panel {
    height: auto;
    overflow: visible;
  }

  .insight-grid {
    overflow: visible;
    padding-right: 0;
  }

  .replay-footer,
  .hero-meta,
  .header-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .page {
    padding: 18px;
  }

  .page-header h1 {
    font-size: 2.3rem;
  }

  .header-metrics,
  .hero-banner-grid,
  .replay-footer,
  .hero-meta,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .story-item {
    grid-template-columns: auto 1fr;
  }

  .story-time {
    grid-column: 2;
  }

  .code-shell .CodeMirror {
    font-size: 0.86rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}