:root {
  --col-dark: #1a1423;
  --col-cream: #f4e4bc;
  --col-panda: #c8511e;
  --col-panda-dark: #8a3712;
  --col-brown: #5d2e0c;
  --col-grass: #7ab547;
  --col-grass-dark: #4a7c2a;
  --col-sky: #6ec6e8;
  --col-gold: #f2c94c;
  --font-pixel: 'Press Start 2P', monospace;
  --font-body: 'Nunito', system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  font-family: var(--font-body);
  font-size: 16px;
  background: var(--col-dark);
  color: var(--col-cream);
}
img, svg { image-rendering: pixelated; }

#game {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px 20px 160px;
}

button {
  font-family: var(--font-pixel);
  font-size: 10px;
  background: var(--col-panda);
  color: var(--col-cream);
  border: 4px solid var(--col-dark);
  padding: 10px 14px;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--col-dark);
  line-height: 1.4;
}
button:hover:not(:disabled) {
  background: var(--col-panda-dark);
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 var(--col-dark);
}
button:active:not(:disabled) {
  transform: translate(4px, 4px);
  box-shadow: 0 0 0 var(--col-dark);
}
button:disabled { opacity: 0.4; cursor: not-allowed; }

input[type=number], input[type=text] {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 18px;
  background: var(--col-cream);
  color: var(--col-dark);
  border: 4px solid var(--col-dark);
  padding: 8px;
  outline: none;
  width: 110px;
}

/* Pokémon-style dialog box */
.dialog-box {
  position: fixed;
  left: 20px;
  right: 20px;
  bottom: 20px;
  max-width: 920px;
  margin: 0 auto;
  background: var(--col-cream);
  color: var(--col-dark);
  border: 6px solid var(--col-dark);
  padding: 20px 24px;
  box-shadow: 0 0 0 3px var(--col-cream), 0 0 0 9px var(--col-dark);
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
  min-height: 110px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  z-index: 1000;
  cursor: pointer;
}
.dialog-box .portrait {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: var(--col-grass);
  border: 3px solid var(--col-dark);
  padding: 4px;
}
.dialog-box .text {
  flex: 1;
  white-space: pre-wrap;
  min-height: 70px;
  padding-right: 20px;
}
.dialog-box .next-arrow {
  position: absolute;
  right: 28px;
  bottom: 16px;
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 12px solid var(--col-dark);
  animation: blink 0.7s steps(2, end) infinite;
}
@keyframes blink { 0%,50% { opacity: 1; } 50.01%,100% { opacity: 0; } }

/* Title screen */
.title-screen {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.title-screen h1 {
  font-family: var(--font-pixel);
  font-size: 34px;
  color: var(--col-panda);
  text-shadow: 4px 4px 0 var(--col-dark), 8px 8px 0 var(--col-gold);
  letter-spacing: 3px;
}
.title-screen .subtitle { font-family: var(--font-pixel); font-size: 11px; }
.title-screen .press {
  font-family: var(--font-pixel);
  font-size: 10px;
  color: var(--col-gold);
  animation: blink 1s steps(2, end) infinite;
}

/* World map */
.map {
  width: 100%;
  max-width: 920px;
  background: var(--col-grass);
  border: 6px solid var(--col-dark);
  padding: 24px;
  box-shadow: 0 0 0 3px var(--col-grass), 0 0 0 9px var(--col-dark);
}
.map-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  font-family: var(--font-pixel);
  font-size: 10px;
  gap: 10px;
  flex-wrap: wrap;
}
.map-header .title-text {
  color: var(--col-dark);
  background: var(--col-cream);
  padding: 8px 12px;
  border: 3px solid var(--col-dark);
}
.map-header .xp {
  background: var(--col-dark);
  color: var(--col-gold);
  padding: 8px 12px;
  border: 3px solid var(--col-cream);
}
.map-header .reset {
  font-size: 8px;
  padding: 6px 8px;
}
.map-header .admin-toggle {
  font-size: 8px;
  padding: 6px 8px;
  background: var(--col-dark);
  color: var(--col-cream);
  border-color: var(--col-cream);
}
.map-header .admin-toggle.active {
  background: var(--col-gold);
  color: var(--col-dark);
  border-color: var(--col-dark);
}
.map-nodes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
@media (max-width: 720px) {
  .map-nodes { grid-template-columns: repeat(2, 1fr); }
}
.node {
  background: var(--col-cream);
  color: var(--col-dark);
  border: 4px solid var(--col-dark);
  padding: 14px 10px;
  font-family: var(--font-pixel);
  font-size: 9px;
  text-align: center;
  cursor: pointer;
  position: relative;
  min-height: 130px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  line-height: 1.5;
}
.node:hover:not(.locked) { background: var(--col-gold); }
.node.locked {
  background: #2a2440;
  color: #6a6280;
  cursor: not-allowed;
}
.node.completed::after {
  content: "★";
  position: absolute;
  top: 2px;
  right: 6px;
  color: var(--col-gold);
  font-size: 20px;
  text-shadow: 2px 2px 0 var(--col-dark);
}
.node .num {
  background: var(--col-panda);
  color: var(--col-cream);
  padding: 4px 8px;
  border: 2px solid var(--col-dark);
  font-size: 9px;
}
.node.locked .num { background: var(--col-brown); }
.node .title-text { font-size: 9px; }

/* Chapter screen */
.chapter {
  width: 100%;
  max-width: 920px;
  background: var(--col-cream);
  color: var(--col-dark);
  border: 6px solid var(--col-dark);
  padding: 24px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.65;
  box-shadow: 0 0 0 3px var(--col-cream), 0 0 0 9px var(--col-dark);
}
.chapter h2 {
  font-family: var(--font-pixel);
  font-size: 16px;
  color: var(--col-panda);
  border-bottom: 4px solid var(--col-dark);
  padding-bottom: 12px;
  line-height: 1.5;
}
.chapter .content { flex: 1; }
.chapter .content p { margin-bottom: 12px; }
.chapter .content b { color: var(--col-panda-dark); }
.chapter .content .formula {
  display: inline-block;
  background: var(--col-dark);
  color: var(--col-gold);
  padding: 8px 14px;
  margin: 4px 2px;
  border: 3px solid var(--col-panda);
  font-family: 'VT323', var(--font-pixel);
  font-size: 24px;
  letter-spacing: 1px;
}
.chapter .content .highlight { color: var(--col-panda); }
.chapter .actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.chapter .exercise-box {
  background: #fff;
  border: 4px solid var(--col-dark);
  padding: 16px;
  margin: 12px 0;
}
.feedback {
  margin-top: 12px;
  padding: 14px;
  border: 3px solid var(--col-dark);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}
.feedback.ok { background: var(--col-grass); color: var(--col-cream); }
.feedback.ko { background: var(--col-panda); color: var(--col-cream); }

.quiz-option {
  display: block;
  width: 100%;
  text-align: left;
  margin: 8px 0;
  background: var(--col-cream);
  color: var(--col-dark);
  border: 3px solid var(--col-dark);
  padding: 14px 16px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 17px;
  cursor: pointer;
  line-height: 1.4;
  box-shadow: 3px 3px 0 var(--col-dark);
}
.quiz-option:hover:not(:disabled) { background: var(--col-gold); }
.quiz-option.correct { background: var(--col-grass); color: var(--col-cream); }
.quiz-option.wrong { background: var(--col-panda); color: var(--col-cream); }

/* Interactive graph */
.graph-wrap { text-align: center; margin: 14px 0; }
.graph-wrap svg {
  background: #fff;
  border: 4px solid var(--col-dark);
  max-width: 100%;
  height: auto;
}
.slider-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 10px 0;
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 700;
}
.slider-row label { min-width: 80px; text-align: right; }
.slider-row input[type=range] { width: 220px; }

/* ============================================================
   Mascotte — animations
   ============================================================ */
.mascot { display: inline-block; line-height: 0; }
.mascot svg { display: block; }

.mascot-bounce { animation: mascot-bounce 0.7s cubic-bezier(.36,.07,.19,.97); }
@keyframes mascot-bounce {
  0%, 100% { transform: translateY(0) rotate(0); }
  20%      { transform: translateY(-18px) rotate(-4deg); }
  40%      { transform: translateY(0) rotate(2deg); }
  60%      { transform: translateY(-8px) rotate(-2deg); }
  80%      { transform: translateY(0) rotate(0); }
}

.mascot-shake { animation: mascot-shake 0.45s; }
@keyframes mascot-shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-7px) rotate(-3deg); }
  40%, 80% { transform: translateX(7px) rotate(3deg); }
}

/* ============================================================
   Sparkle (confetti pixels)
   ============================================================ */
.sparkle {
  position: fixed;
  width: 8px;
  height: 8px;
  background: var(--col-gold);
  border: 2px solid var(--col-dark);
  pointer-events: none;
  z-index: 2000;
  animation: sparkle-fly 0.7s ease-out forwards;
}
@keyframes sparkle-fly {
  0%   { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  100% { transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(0); opacity: 0; }
}

/* ============================================================
   Brilliant-style scenes
   ============================================================ */
.scene-step {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-pixel);
  font-size: 9px;
  color: var(--col-brown);
  margin-bottom: 6px;
}
.scene-step .dots { display: flex; gap: 4px; }
.scene-step .dot {
  width: 10px; height: 10px;
  background: var(--col-cream);
  border: 2px solid var(--col-brown);
}
.scene-step .dot.done { background: var(--col-grass); }
.scene-step .dot.active { background: var(--col-gold); }

.inline-mascot {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 12px 0;
}
.inline-mascot .bubble {
  flex: 1;
  background: #fff;
  border: 4px solid var(--col-dark);
  padding: 14px 18px;
  position: relative;
  font-size: 17px;
  line-height: 1.5;
  min-height: 48px;
}
.inline-mascot .bubble::before {
  content: '';
  position: absolute;
  left: -14px;
  top: 24px;
  width: 0; height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-right: 14px solid var(--col-dark);
}
.inline-mascot .bubble::after {
  content: '';
  position: absolute;
  left: -8px;
  top: 26px;
  width: 0; height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-right: 10px solid #fff;
}

/* Big formula with letters fading in */
.big-formula {
  text-align: center;
  font-family: 'VT323', monospace;
  font-size: 48px;
  background: var(--col-dark);
  color: var(--col-gold);
  padding: 20px;
  border: 4px solid var(--col-panda);
  margin: 18px 0;
  letter-spacing: 4px;
  position: relative;
}
.big-formula .letter {
  display: inline-block;
  opacity: 0;
  transform: translateY(-10px);
  animation: letter-drop 0.4s forwards;
}
@keyframes letter-drop {
  to { opacity: 1; transform: translateY(0); }
}
.big-formula .annot {
  display: block;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  color: var(--col-cream);
  margin-top: 8px;
  opacity: 0;
  animation: fade-in 0.4s 1.4s forwards;
}
@keyframes fade-in { to { opacity: 1; } }

/* Animated bar chart */
.bar-chart {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 16px;
  height: 200px;
  margin: 18px 0;
  padding: 0 20px;
  border-bottom: 4px solid var(--col-dark);
}
.bar-chart .bar {
  width: 50px;
  background: var(--col-panda);
  border: 3px solid var(--col-dark);
  border-bottom: none;
  position: relative;
  transform-origin: bottom;
  transform: scaleY(0);
  animation: bar-grow 0.5s forwards;
}
.bar-chart .bar .label {
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  color: var(--col-dark);
  background: var(--col-cream);
  padding: 2px 6px;
  border: 2px solid var(--col-dark);
  white-space: nowrap;
}
.bar-chart .bar .x {
  position: absolute;
  bottom: -28px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--col-dark);
}
@keyframes bar-grow {
  to { transform: scaleY(1); }
}

/* Drag/click slot system */
.slot-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 22px 0;
  font-family: 'VT323', monospace;
  font-size: 36px;
  color: var(--col-dark);
}
.slot {
  display: inline-block;
  min-width: 56px;
  height: 56px;
  line-height: 50px;
  text-align: center;
  background: #fff;
  border: 4px dashed var(--col-brown);
  color: var(--col-panda);
  font-size: 32px;
  cursor: pointer;
}
.slot.filled { border-style: solid; background: var(--col-gold); border-color: var(--col-dark); }
.slot.correct { background: var(--col-grass); color: var(--col-cream); border-color: var(--col-dark); }
.slot.wrong { background: var(--col-panda); color: var(--col-cream); animation: mascot-shake 0.4s; }

.chips {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}
.chip {
  background: var(--col-cream);
  color: var(--col-dark);
  border: 4px solid var(--col-dark);
  padding: 10px 18px;
  font-family: 'VT323', monospace;
  font-size: 26px;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--col-dark);
  user-select: none;
}
.chip:hover { background: var(--col-gold); }
.chip.selected { background: var(--col-panda); color: var(--col-cream); }
.chip.used { opacity: 0.3; pointer-events: none; }

/* Step-by-step revealer */
.steps-list {
  list-style: none;
  padding: 0;
  margin: 14px 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.steps-list li {
  background: #fff;
  border: 4px solid var(--col-dark);
  padding: 12px 16px;
  font-size: 18px;
  font-weight: 700;
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 0.3s, transform 0.3s;
}
.steps-list li.shown {
  opacity: 1;
  transform: translateX(0);
}
.steps-list li b { color: var(--col-panda); }

/* Animated SVG line draw */
.draw-line {
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  animation: draw 1.2s ease-out forwards;
}
@keyframes draw { to { stroke-dashoffset: 0; } }

/* Cards (oui/non, picks) */
.cards {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin: 18px 0;
}
.card-pick {
  background: var(--col-cream);
  color: var(--col-dark);
  border: 4px solid var(--col-dark);
  padding: 18px 24px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 17px;
  min-width: 140px;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--col-dark);
  text-align: center;
}
.card-pick:hover { background: var(--col-gold); }
.card-pick.correct { background: var(--col-grass); color: var(--col-cream); }
.card-pick.wrong { background: var(--col-panda); color: var(--col-cream); }

/* ============================================================
   Inventaire & Modal
   ============================================================ */
.inv-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 64px;
  height: 64px;
  padding: 0;
  font-size: 28px;
  background: var(--col-gold);
  border: 4px solid var(--col-dark);
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--col-dark);
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
}
.inv-btn:hover { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--col-dark); }
.inv-btn .inv-count {
  position: absolute;
  top: -6px;
  right: -6px;
  background: var(--col-panda);
  color: var(--col-cream);
  border: 3px solid var(--col-dark);
  font-family: var(--font-pixel);
  font-size: 9px;
  padding: 3px 5px;
  min-width: 18px;
  text-align: center;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 20, 35, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  padding: 20px;
}
.modal-box {
  background: var(--col-cream);
  color: var(--col-dark);
  border: 6px solid var(--col-dark);
  padding: 26px 32px;
  max-width: 920px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
  position: relative;
  box-shadow: 0 0 0 3px var(--col-cream), 0 0 0 9px var(--col-dark);
}
.modal-close {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--col-panda);
  color: var(--col-cream);
  border: 3px solid var(--col-dark);
  width: 36px;
  height: 36px;
  padding: 0;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--col-dark);
  z-index: 10;
}
.modal-body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}
.modal-body h2 {
  font-family: var(--font-pixel);
  font-size: 14px;
  color: var(--col-panda);
  margin-bottom: 14px;
}
.modal-body h3 {
  font-family: var(--font-pixel);
  font-size: 11px;
  color: var(--col-panda-dark);
  margin-top: 14px;
  margin-bottom: 8px;
}
.modal-body p { margin: 8px 0; }
.modal-body ul, .modal-body ol { padding-left: 22px; margin: 8px 0; }
.modal-body li { margin: 4px 0; }

.item-formula {
  display: block;
  text-align: center;
  background: var(--col-dark);
  color: var(--col-gold);
  font-family: 'VT323', monospace;
  font-size: 28px;
  padding: 14px;
  margin: 14px 0;
  border: 4px solid var(--col-panda);
}

.item-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
  margin-top: 14px;
}
.item-card {
  background: #fff;
  border: 4px solid var(--col-dark);
  padding: 14px 10px;
  text-align: center;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--col-dark);
}
.item-card:hover {
  background: var(--col-gold);
}
.item-icon { font-size: 36px; margin-bottom: 8px; }
.item-name {
  font-family: var(--font-pixel);
  font-size: 9px;
  color: var(--col-dark);
  line-height: 1.4;
}

/* ---- Reward popup ---- */
.reward-overlay .modal-box { max-width: 480px; }
.item-reward { text-align: center; padding: 10px; }
.reward-label {
  font-family: var(--font-pixel);
  font-size: 14px;
  color: var(--col-panda);
  animation: fade-in 0.4s;
}
.reward-icon {
  font-size: 96px;
  margin: 22px 0;
  display: inline-block;
  animation: mascot-bounce 0.8s 0.3s;
}
.reward-name {
  font-family: var(--font-pixel);
  font-size: 14px;
  color: var(--col-panda-dark);
  margin: 10px 0;
}
.reward-hint {
  font-size: 14px;
  color: var(--col-brown);
  margin-top: 18px;
  line-height: 1.5;
}

/* ---- Z Table ---- */
.z-table-wrap {
  overflow-x: auto;
  max-width: 100%;
  margin: 14px 0;
  border: 4px solid var(--col-dark);
}
.z-table {
  border-collapse: collapse;
  font-family: 'VT323', monospace;
  font-size: 16px;
  background: #fff;
  width: 100%;
}
.z-table th, .z-table td {
  padding: 4px 6px;
  text-align: center;
  border: 1px solid #5d2e0c;
  min-width: 42px;
}
.z-table thead th {
  background: var(--col-panda);
  color: var(--col-cream);
  font-weight: 700;
  position: sticky;
  top: 0;
}
.z-table tbody th {
  background: var(--col-gold);
  color: var(--col-dark);
  font-weight: 700;
}
.z-table td:hover { background: var(--col-gold); cursor: pointer; }
.z-table td.highlight { background: var(--col-grass); color: var(--col-cream); font-weight: 700; }
.z-table td.target-hint { outline: 3px solid var(--col-panda); }