:root {
  --sky1: #fff3bf;
  --sky2: #fff9db;
  --ink: #23395b;
  --accent: #e67700;
  --good: #2bb673;
  --card: rgba(255, 255, 255, 0.94);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: 'Baloo 2', system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(var(--sky1), var(--sky2));
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
}
button { font: inherit; color: inherit; cursor: pointer; border: 0; }
button:disabled { cursor: default; }
.hidden { display: none !important; }

.panel {
  background: var(--card); border-radius: 28px; padding: 28px 24px; width: min(560px, 100%);
  text-align: center; box-shadow: 0 12px 0 rgba(35, 57, 91, .12), 0 20px 40px rgba(35, 57, 91, .15);
}
h1 { font-size: clamp(1.8rem, 6vw, 2.5rem); line-height: 1.15; }
.sub { opacity: .75; margin-top: 4px; }
.row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 18px; }

.btn {
  font-size: 1.2rem; font-weight: 800; padding: 10px 24px; border-radius: 999px;
  transition: transform .1s, box-shadow .1s;
}
.btn.go { background: var(--good); color: #fff; box-shadow: 0 5px 0 #1e8c57; }
.btn.ghost { background: #eef3ff; box-shadow: 0 5px 0 #c9d4f2; }
.btn:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 2px 0 rgba(0, 0, 0, .2); }
.btn:disabled { opacity: .5; }

/* ---------- Chọn màn ---------- */
#levels { min-height: 100%; display: grid; place-items: center; padding: 16px; }
.level-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 20px; }
.level-grid button {
  aspect-ratio: 1; border-radius: 18px; background: #eef3ff; font-size: 1.8rem; font-weight: 800;
  display: flex; flex-direction: column; align-items: center; justify-content: center; line-height: 1;
  box-shadow: 0 5px 0 #c9d4f2; transition: transform .12s;
}
.level-grid button:hover:not(:disabled) { transform: translateY(-3px); }
.level-grid button small { font-size: .8rem; margin-top: 6px; letter-spacing: 1px; }
.level-grid button.done { background: #e6fcf0; box-shadow: 0 5px 0 #a9e5c4; }
.level-grid button:disabled { opacity: .45; }

/* ---------- Màn chơi ---------- */
#play { min-height: 100%; display: flex; flex-direction: column; gap: 10px; padding: 10px 16px 16px; max-width: 760px; margin: 0 auto; }
.hud { display: flex; align-items: center; gap: 10px; }
.hud h2 { flex: 1; text-align: center; font-size: 1.4rem; }
.icon {
  background: var(--card); width: 44px; height: 44px; border-radius: 14px; font-size: 1.3rem;
  box-shadow: 0 3px 0 rgba(35, 57, 91, .15); flex-shrink: 0;
}
.icon.off { opacity: .4; }

/* Khủng long đứng cạnh lời gợi ý thay vì nổi trên sân chơi */
.guide { display: flex; align-items: center; gap: 4px; min-height: 76px; }
.guide .mascot { width: 76px; height: 76px; }
.guide .bubble { margin: 0; white-space: normal; font-size: 1.05rem; border-radius: 18px 18px 18px 4px; flex: 1; }
/* ---------- Bảng thắng ---------- */
.modal { position: fixed; inset: 0; background: rgba(35, 57, 91, .45); display: grid; place-items: center; padding: 16px; z-index: 10; }
.modal .panel { animation: pop .3s; }
@keyframes pop { from { transform: scale(.7); opacity: 0; } }
.stars { font-size: 3.4rem; margin: 8px 0; letter-spacing: 6px; }
.stars span { display: inline-block; filter: grayscale(1); opacity: .3; }
.stars span.on { filter: none; opacity: 1; animation: starIn .5s backwards; }
.stars span:nth-child(2) { animation-delay: .2s; }
.stars span:nth-child(3) { animation-delay: .4s; }
@keyframes starIn { from { transform: scale(0) rotate(-90deg); } 70% { transform: scale(1.3); } }

/* ---------- Manh mối ---------- */
.clue {
  background: var(--card); border-radius: 20px; padding: 10px 16px; display: flex; align-items: center;
  gap: 4px 12px; flex-wrap: wrap; box-shadow: 0 4px 0 rgba(35, 57, 91, .1); border: 3px dashed #ffc078;
}
.clue-tag { font-weight: 800; color: var(--accent); }
.clue strong { flex: 1 1 260px; font-size: 1.3rem; line-height: 1.25; }
.found-info { font-weight: 800; background: #fff4e6; border-radius: 999px; padding: 0 12px; }

/* ---------- Hiện trường ---------- */
.scene {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); gap: 12px;
  background: repeating-linear-gradient(45deg, #fffdf5 0 14px, #fff8e6 14px 28px);
  border-radius: 20px; padding: 14px; box-shadow: 0 6px 0 #ffd8a8, 0 10px 24px rgba(35, 57, 91, .12);
}
.shape {
  aspect-ratio: 1; background: transparent; border-radius: 18px; position: relative; padding: 6px;
  transition: transform .15s, background .15s;
}
.shape svg { width: 100%; height: 100%; overflow: visible; transform: scale(var(--s, 1)); }
.shape:hover { background: rgba(255, 192, 120, .2); }
.shape.found { background: #d3f9d8; cursor: default; }
.shape.found::after {
  content: '✔'; position: absolute; top: -6px; right: -4px; width: 30px; height: 30px; border-radius: 50%;
  background: var(--good); color: #fff; font-size: 1.1rem; display: grid; place-items: center; animation: stamp .3s;
}
.shape.wrong { animation: shake .45s; }
@keyframes shake { 20%, 60% { transform: translateX(-6px) rotate(-4deg); } 40%, 80% { transform: translateX(6px) rotate(4deg); } }
@keyframes stamp { from { transform: scale(2.4); opacity: 0; } }

@media (max-width: 520px) {
  .scene { grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); gap: 8px; padding: 10px; }
  .clue strong { font-size: 1.15rem; }
}