@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@400;500;600;700;900&display=swap');

:root {
  --cream: #FDF6E9;
  --cream-light: #FFF8ED;
  --cream-deep: #F5E9D3;
  --accent: #E8985E;
  --accent-dark: #C97B3D;
  --accent-soft: #F2C078;
  --text: #5C4033;
  --text-light: #8a6a52;
  --green: #8DA46E;
  --green-soft: #E4EBD8;
  --shadow: rgba(92, 64, 51, 0.18);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: var(--cream);
  background-image:
    radial-gradient(circle at 8% 12%, rgba(232,152,94,0.10) 0, transparent 40%),
    radial-gradient(circle at 92% 88%, rgba(141,164,110,0.12) 0, transparent 40%);
  font-family: 'Noto Serif TC', serif;
  color: var(--text);
}

#app { max-width: 980px; margin: 0 auto; padding: 20px 18px 60px; }

/* ───────── Header ───────── */
.game-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: var(--cream-light);
  border: 2.5px dashed var(--accent-dark);
  border-radius: 26px 8px 26px 8px;
  padding: 16px 22px;
  margin-bottom: 22px;
  box-shadow: 0 6px 0 var(--shadow);
}

.game-title {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--accent-dark);
  margin: 0;
  line-height: 1.3;
}
.game-title small {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-light);
  margin-top: 2px;
}

.growth-box { display: flex; align-items: center; gap: 10px; }
.growth-icon { font-size: 2.1rem; filter: drop-shadow(0 3px 0 var(--shadow)); }
.growth-label { font-size: 0.85rem; color: var(--text-light); }
.growth-label b { color: var(--accent-dark); font-size: 0.95rem; }

.badge-shelf { display: flex; gap: 8px; }
.badge {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  background: var(--cream-deep);
  border: 2px solid #e3d3b3;
  opacity: 0.4;
  filter: grayscale(1);
  transition: all .3s ease;
}
.badge.unlocked {
  opacity: 1;
  filter: none;
  background: var(--accent-soft);
  border-color: var(--accent-dark);
  transform: scale(1.05);
  box-shadow: 0 3px 0 var(--shadow);
}

/* ───────── Map view ───────── */
.act-card {
  background: var(--cream-light);
  border: 2.5px solid var(--cream-deep);
  border-radius: 30px 10px 30px 10px;
  padding: 20px 22px 26px;
  margin-bottom: 22px;
  position: relative;
}
.act-card::before {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1.5px dashed rgba(201,123,61,0.35);
  border-radius: 24px 8px 24px 8px;
  pointer-events: none;
}
.act-head { display: flex; align-items: center; gap: 12px; margin-bottom: 4px; }
.act-icon { font-size: 1.8rem; }
.act-title { font-size: 1.2rem; font-weight: 700; color: var(--accent-dark); margin: 0; }
.act-desc { font-size: 0.85rem; color: var(--text-light); margin: 2px 0 16px 46px; }

.level-track {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding: 6px 4px;
}

.level-node-wrap { display: flex; align-items: center; gap: 4px; }

.level-node {
  width: 78px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  padding: 4px;
}
.level-circle {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--cream);
  border: 3px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.05rem;
  color: var(--accent-dark);
  transition: transform .15s ease, box-shadow .15s ease;
  box-shadow: 0 4px 0 var(--shadow);
  position: relative;
}
.level-node:hover .level-circle { transform: translateY(-3px) rotate(-3deg); box-shadow: 0 7px 0 var(--shadow); }
.level-node.done .level-circle {
  background: var(--green-soft);
  border-color: var(--green);
  color: #4d6339;
}
.level-node.done .level-circle::after {
  content: '🌱';
  position: absolute;
  bottom: -8px; right: -8px;
  font-size: 1.1rem;
}
.level-label { font-size: 0.72rem; text-align: center; line-height: 1.25; color: var(--text); }

.connector { font-size: 1.1rem; color: var(--accent-soft); flex: 0 0 auto; margin: 0 -2px; }

/* ───────── Level view ───────── */
.level-view {
  background: var(--cream-light);
  border: 2.5px dashed var(--accent-dark);
  border-radius: 30px 8px 30px 8px;
  padding: 26px 26px 30px;
  box-shadow: 0 6px 0 var(--shadow);
}

.back-btn {
  background: none; border: none; cursor: pointer;
  font-family: inherit; font-size: 0.9rem; color: var(--accent-dark);
  margin-bottom: 10px; padding: 4px 0;
}
.back-btn:hover { text-decoration: underline; }

.level-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 6px; }
.type-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--text);
  border-radius: 20px;
  padding: 3px 14px;
  font-size: 0.78rem;
  font-weight: 600;
}
.level-view h2 { margin: 4px 0 16px; color: var(--accent-dark); font-size: 1.4rem; }

.prompt-box {
  background: var(--cream);
  border: 2px dashed var(--cream-deep);
  border-radius: 18px;
  padding: 18px 20px;
  margin-bottom: 20px;
  white-space: pre-line;
  line-height: 1.75;
  font-size: 1rem;
}

/* choice options */
.option-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.option-btn {
  text-align: left;
  background: var(--cream);
  border: 2px solid var(--cream-deep);
  border-radius: 16px 6px 16px 6px;
  padding: 13px 18px;
  font-family: inherit;
  font-size: 0.96rem;
  line-height: 1.55;
  color: var(--text);
  cursor: pointer;
  transition: all .15s ease;
}
.option-btn:hover:not(:disabled) { border-color: var(--accent); transform: translateX(3px); }
.option-btn:disabled { cursor: default; }
.option-btn.correct { background: var(--green-soft); border-color: var(--green); }
.option-btn.wrong { background: #F7E3DA; border-color: #D98B6B; opacity: 0.85; }
.option-btn.model-answer { background: var(--green-soft); border-color: var(--green); }
.option-btn.your-pick { border-color: var(--accent-dark); border-width: 2.5px; }
.tag-inline { display: inline-block; font-size: 0.72rem; font-weight: 700; padding: 1px 9px; border-radius: 10px; margin-left: 8px; vertical-align: middle; }
.tag-inline.correct-tag { background: var(--green); color: #fff; }
.tag-inline.pick-tag { background: var(--accent-dark); color: #fff; }
.tag-inline.model-tag { background: var(--green); color: #fff; }

/* matching */
.match-grid { display: flex; gap: 28px; margin-bottom: 20px; flex-wrap: wrap; }
.match-col { flex: 1; min-width: 220px; display: flex; flex-direction: column; gap: 10px; }
.match-item {
  background: var(--cream);
  border: 2px solid var(--cream-deep);
  border-radius: 14px 5px 14px 5px;
  padding: 11px 14px;
  cursor: pointer;
  font-size: 0.92rem;
  line-height: 1.5;
  transition: all .15s ease;
}
.match-item.term { font-weight: 700; color: var(--accent-dark); }
.match-item:hover:not(.matched) { border-color: var(--accent); }
.match-item.selected { border-color: var(--accent-dark); background: var(--accent-soft); }
.match-item.matched { background: var(--green-soft); border-color: var(--green); cursor: default; opacity: 0.85; }
.match-item.shake { animation: shake .35s; }
@keyframes shake { 0%,100%{transform:translateX(0);} 25%{transform:translateX(-6px);} 75%{transform:translateX(6px);} }

/* ordering */
.order-pool, .order-answer {
  display: flex; flex-direction: column; gap: 10px; min-height: 54px;
  margin-bottom: 14px;
  padding: 12px;
  border-radius: 14px;
  border: 2px dashed var(--cream-deep);
}
.order-answer { border-style: solid; background: var(--cream); }
.order-item {
  background: var(--cream-light);
  border: 2px solid var(--accent-soft);
  border-radius: 12px 4px 12px 4px;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 0.92rem;
  line-height: 1.5;
}
.order-item:hover { border-color: var(--accent); }
.order-answer .order-item { display: flex; gap: 8px; align-items: flex-start; }
.order-step-no { font-weight: 700; color: var(--accent-dark); }
.pool-label, .answer-label { font-size: 0.78rem; color: var(--text-light); margin-bottom: 4px; }
.order-feedback { font-size: 0.88rem; margin-bottom: 10px; color: var(--accent-dark); min-height: 1.2em; }

/* buttons */
.primary-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 20px 8px 20px 8px;
  padding: 11px 26px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 0 var(--accent-dark);
  transition: transform .1s ease;
}
.primary-btn:hover { transform: translateY(-2px); }
.primary-btn:active { transform: translateY(1px); box-shadow: 0 2px 0 var(--accent-dark); }
.primary-btn:disabled { background: #d9c9ae; box-shadow: 0 4px 0 #bfae91; cursor: not-allowed; }
.ghost-btn {
  background: none;
  border: 2px solid var(--accent);
  color: var(--accent-dark);
  border-radius: 20px 8px 20px 8px;
  padding: 9px 22px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  margin-left: 10px;
}

.explain-card {
  background: var(--green-soft);
  border: 2.5px dashed var(--green);
  border-radius: 20px 6px 20px 6px;
  padding: 18px 20px;
  margin: 6px 0 22px;
  line-height: 1.75;
  font-size: 0.94rem;
  display: none;
}
.explain-card.show { display: block; animation: fadeUp .35s ease; }
.explain-card .explain-head { font-weight: 700; color: #4d6339; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px);} to { opacity: 1; transform: translateY(0);} }

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

footer.credit { text-align: center; color: var(--text-light); font-size: 0.78rem; margin-top: 30px; }

@media (max-width: 560px) {
  .act-desc { margin-left: 0; }
  .match-grid { flex-direction: column; }
  .level-node { width: 64px; }
  .level-circle { width: 46px; height: 46px; font-size: 0.9rem; }
}