:root {
  --sky-top: #b8e8ff;
  --sky-mid: #f0d4ff;
  --sky-bot: #ffe8f4;
  --grass: #b8e8c8;
  --grass-dark: #8ecfaa;
  --mint: #c8f2dc;
  --mint-bright: #a8e6c4;
  --sage: #9fd4b8;
  --panel: #fff8fc;
  --panel-border: #5c3d5e;
  --panel-shadow: #3a2540;
  --pink: #ff8fc7;
  --pink-dark: #d45f9a;
  --lavender: #c9a8ff;
  --gold: #ffd56b;
  --text: #3d2a45;
  --console-bg: #1a1224;
  --font-pixel: "Press Start 2P", monospace;
  --font-body: "VT323", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1.35rem;
  line-height: 1.35;
  color: var(--text);
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-mid) 45%, var(--sky-bot) 100%);
  image-rendering: pixelated;
}

.flower-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.flower {
  position: absolute;
  width: 72px;
  height: 72px;
  opacity: 0.85;
  animation: sway 4s ease-in-out infinite;
}

.flower.f1 { top: 8%; left: 4%; }
.flower.f2 { top: 12%; right: 6%; width: 56px; height: 56px; animation-delay: 1s; }
.flower.f3 { bottom: 18%; left: 8%; width: 64px; height: 64px; animation-delay: 0.5s; }
.flower.f4 { bottom: 10%; right: 4%; animation-delay: 1.5s; }

@keyframes sway {
  0%, 100% { transform: rotate(-4deg) scale(1); }
  50% { transform: rotate(4deg) scale(1.05); }
}

.game-shell {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
}

.game-header {
  text-align: center;
  padding: 1rem 0 0.5rem;
}

.eyebrow {
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  color: var(--pink-dark);
  margin: 0 0 0.75rem;
}

.game-header h1 {
  font-family: var(--font-pixel);
  font-size: clamp(0.85rem, 3.5vw, 1.1rem);
  line-height: 1.6;
  margin: 0;
  color: var(--panel-border);
  text-shadow: 3px 3px 0 var(--pink);
}

.subtitle {
  margin: 0.75rem 0 0;
  font-size: 1.4rem;
}

.dialog-box {
  display: flex;
  gap: 0.75rem;
  background: var(--panel);
  border: 4px solid var(--panel-border);
  border-radius: 4px;
  box-shadow: 6px 6px 0 var(--panel-shadow);
  padding: 1rem;
  margin: 1.25rem 0;
}

.dialog-portrait {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--lavender), var(--pink));
  border: 3px solid var(--panel-border);
  border-radius: 4px;
}

.dialog-portrait::after {
  content: "";
  display: block;
  width: 12px;
  height: 12px;
  background: var(--panel-border);
  margin: 14px auto 0;
  box-shadow: -10px 0 0 var(--panel-border), 10px 0 0 var(--panel-border);
}

.dialog-text strong {
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--pink-dark);
  display: block;
  margin-bottom: 0.5rem;
}

.dialog-text p {
  margin: 0;
  font-size: 1.25rem;
}

.hud {
  background: var(--grass-dark);
  border: 4px solid var(--panel-border);
  padding: 0.65rem 1rem;
  box-shadow: 4px 4px 0 var(--panel-shadow);
  margin-bottom: 1rem;
}

.hud-label {
  font-family: var(--font-pixel);
  font-size: 0.45rem;
  color: var(--gold);
  margin: 0 0 0.4rem;
}

.xp-bar {
  height: 18px;
  background: #2d4a2a;
  border: 3px solid var(--panel-border);
  padding: 2px;
}

.xp-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--pink), var(--gold));
  transition: width 0.5s steps(8);
}

.xp-text {
  margin: 0.35rem 0 0;
  font-size: 1.2rem;
  color: #e8ffe8;
}

.game-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.nav-btn {
  font-family: var(--font-pixel);
  font-size: 0.42rem;
  padding: 0.65rem 0.75rem;
  border: 3px solid var(--panel-border);
  background: var(--panel);
  color: var(--panel-border);
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--panel-shadow);
  transition: transform 0.1s, box-shadow 0.1s;
}

.nav-btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--panel-shadow);
}

.nav-btn.active {
  background: var(--pink);
  color: var(--panel);
  box-shadow: 4px 4px 0 var(--pink-dark);
}

.panel {
  display: none;
}

.panel.active {
  display: block;
  animation: panelIn 0.25s steps(4);
}

@keyframes panelIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-hint {
  font-size: 1.25rem;
  margin: 0 0 1rem;
  padding: 0.5rem 0.65rem;
  background: rgba(255, 255, 255, 0.45);
  border: 2px dashed var(--lavender);
}

.quest-panel {
  background: var(--panel);
  border: 4px solid var(--panel-border);
  box-shadow: 6px 6px 0 var(--panel-shadow);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}

.quest-panel h2 {
  font-family: var(--font-pixel);
  font-size: 0.52rem;
  line-height: 1.55;
  margin: 0 0 0.65rem;
  color: var(--panel-border);
}

.lesson-summary {
  font-size: 1.3rem;
  margin: 0.5rem 0 1rem;
}

.subhead {
  font-family: var(--font-pixel);
  font-size: 0.45rem;
  margin: 1.25rem 0 0.5rem;
  color: var(--pink-dark);
}

.pipeline-quest {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin: 1rem 0;
}

.pipe-node {
  font-family: var(--font-pixel);
  font-size: 0.4rem;
  background: var(--lavender);
  border: 3px solid var(--panel-border);
  padding: 0.55rem 0.7rem;
  box-shadow: 3px 3px 0 var(--panel-shadow);
  text-align: center;
  min-width: 76px;
}

.step-card,
.compare-card,
.glossary-card,
.output-card {
  background: #fff0f8;
  border: 3px solid var(--panel-border);
  box-shadow: 4px 4px 0 var(--panel-shadow);
  padding: 0.85rem 1rem;
  margin-bottom: 0.75rem;
  position: relative;
}

.step-card::before,
.glossary-card::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 12px;
  width: 10px;
  height: 10px;
  background: var(--pink);
  border: 2px solid var(--panel-border);
  border-radius: 50%;
}

.step-card h3,
.compare-card h3,
.output-card h3 {
  font-family: var(--font-pixel);
  font-size: 0.42rem;
  margin: 0 0 0.5rem;
  line-height: 1.5;
}

.callout {
  font-size: 1.15rem;
  color: var(--pink-dark);
  margin: 0.35rem 0 0;
}

.formula {
  font-family: ui-monospace, monospace;
  background: var(--lavender);
  padding: 0.4rem 0.55rem;
  border: 2px dashed var(--panel-border);
  display: inline-block;
  margin: 0.25rem 0;
}

.learn-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5rem 0 1rem;
  background: #fff;
  border: 3px solid var(--panel-border);
  box-shadow: 4px 4px 0 var(--lavender);
}

.learn-table th {
  background: var(--lavender);
  font-family: var(--font-pixel);
  font-size: 0.35rem;
  padding: 0.5rem;
}

.learn-table td {
  border: 1px solid #d4c4dc;
  padding: 0.45rem 0.55rem;
  font-size: 1.15rem;
}

.code-sample,
.expected-console {
  background: var(--console-bg);
  color: var(--mint);
  padding: 0.85rem;
  overflow-x: auto;
  border: 3px solid var(--panel-border);
  font-size: 1.1rem;
  white-space: pre-wrap;
  box-shadow: inset 0 0 0 2px var(--sage);
}

.cmd {
  background: var(--console-bg);
  color: var(--gold);
  padding: 0.5rem 0.75rem;
  border: 3px solid var(--panel-border);
  font-size: 1.1rem;
  margin: 0.35rem 0;
}

.try-it {
  background: linear-gradient(90deg, #fff0f8, #ffe8f4);
  border: 2px dashed var(--pink);
  padding: 0.75rem;
  font-size: 1.2rem;
  box-shadow: 3px 3px 0 var(--pink-dark);
}

.compare-grid {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 600px) {
  .compare-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.compare-card {
  background: linear-gradient(180deg, #fff8fc, #f0e8ff);
}

.note-box {
  background: #e8fff0;
  border: 3px solid var(--grass-dark);
  padding: 0.75rem;
  font-size: 1.2rem;
  box-shadow: 4px 4px 0 var(--sage);
}

.glossary-grid {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 600px) {
  .glossary-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.glossary-card h3 {
  font-family: var(--font-pixel);
  font-size: 0.4rem;
  color: var(--pink-dark);
  line-height: 1.5;
}

.output-card {
  background: var(--panel);
  border-width: 4px;
}

.output-card h4 {
  font-family: var(--font-pixel);
  font-size: 0.38rem;
  margin: 0.75rem 0 0.35rem;
  color: var(--pink-dark);
}

.muted {
  opacity: 0.85;
  font-style: italic;
}

.trading-embed iframe {
  width: 100%;
  min-height: 520px;
  border: 4px solid var(--panel-border);
  border-radius: 4px;
  box-shadow: 6px 6px 0 var(--panel-shadow);
  background: #0d1520;
}

.github-line {
  text-align: center;
  margin-top: 1.5rem;
}

.github-line .action-btn {
  display: inline-block;
  text-decoration: none;
  font-family: var(--font-pixel);
  font-size: 0.45rem;
  padding: 0.85rem 1.1rem;
  border: 3px solid var(--panel-border);
  background: var(--pink);
  color: #fff;
  box-shadow: 4px 4px 0 var(--pink-dark);
}

.github-line .action-btn:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--pink-dark);
}

.game-footer {
  text-align: center;
  margin-top: 2rem;
  font-size: 1.1rem;
  opacity: 0.9;
}

/* charts.html */
body.charts-only {
  padding: 0.5rem;
  background: linear-gradient(180deg, #1a2838, #0d1520);
  font-family: var(--font-body);
}

body.charts-only .chart-panel {
  background: #121a28;
  border: 3px solid var(--panel-border);
  box-shadow: 3px 3px 0 var(--panel-shadow);
}

body.charts-only .chart-label {
  font-family: var(--font-pixel);
  font-size: 0.35rem;
  color: var(--gold);
  background: var(--panel-border);
  padding: 0.35rem 0.5rem;
}

body.charts-only .status-tag {
  font-family: var(--font-pixel);
  font-size: 0.35rem;
  background: var(--pink-dark);
  color: #fff;
  padding: 0.25rem 0.45rem;
  border: 2px solid var(--panel-border);
}

body.charts-only .action-btn {
  font-family: var(--font-pixel);
  font-size: 0.38rem;
  border: 3px solid var(--panel-border);
  background: var(--pink);
  color: #fff;
  padding: 0.5rem 0.65rem;
  cursor: pointer;
}

body.charts-only .chart-panel.main-chart .chart-canvas {
  min-height: 180px;
  height: 180px;
}