@charset "UTF-8";
/* ==========================================================================
   2. 擬真 3D 積木樣式與分組結構 (BLOCKS & VISUAL SCAFFOLDING)
   ========================================================================== */
/* ---------- legend / bundling strip ---------- */
.legend{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 30px 0 8px;
}
.legend-card{
  background: var(--card);
  border: 2px solid var(--ink);
  border-radius: 18px;
  padding: 14px 12px;
  text-align:center;
  box-shadow: 4px 4px 0 var(--shadow-ink);
}
.legend-card .shape{ margin: 0 auto 8px; }
.legend-card b{ display:block; font-size:15px; margin-bottom:2px;}
.legend-card span{ font-size:12.5px; color: var(--ink-soft); }

.bundle-strip{
  background: var(--card);
  border: 2px dashed var(--ink);
  border-radius: 18px;
  padding: 14px 18px;
  margin: 18px 0 40px;
  display:flex;
  flex-wrap:wrap;
  gap: 18px;
  align-items:center;
  justify-content: center;
  font-size: 14.5px;
}
.bundle-row{ display:flex; align-items:center; gap:8px; flex-wrap:wrap; justify-content:center;}
.bundle-row .arrow{ font-size:18px; color: var(--ink-soft); }

/* ---------- block glyphs & SVG 向量渲染 ---------- */
.blk{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  vertical-align: middle;
  position: relative;
}
.svg-blk{
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  overflow: visible;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.18));
}
/* 向量填色降級與跨分頁防護 */
.svg-blk-o circle{ fill: url(#svg-grad-o); }
.svg-blk-o polygon:nth-of-type(1){ fill: url(#svg-grad-o-top); }
.svg-blk-o polygon:nth-of-type(2){ fill: url(#svg-grad-o-side); }
.svg-blk-o polygon:nth-of-type(3){ fill: url(#svg-grad-o-front); }

.svg-blk-t polygon:nth-of-type(1){ fill: url(#svg-grad-t-top); }
.svg-blk-t polygon:nth-of-type(2){ fill: url(#svg-grad-t-side); }
.svg-blk-t polygon:nth-of-type(3){ fill: url(#svg-grad-t-front); }
.svg-blk-t rect:first-of-type{ fill: url(#svg-grad-t-front); }

.svg-blk-h polygon:nth-of-type(1){ fill: url(#svg-grad-h-top); }
.svg-blk-h polygon:nth-of-type(2){ fill: url(#svg-grad-h-side); }
.svg-blk-h polygon:nth-of-type(3){ fill: url(#svg-grad-h-front); }
.svg-blk-h rect:first-of-type{ fill: url(#svg-grad-h-front); }

.svg-blk-th polygon:nth-of-type(1){ fill: url(#svg-grad-th-top); }
.svg-blk-th polygon:nth-of-type(2){ fill: url(#svg-grad-th-left); }
.svg-blk-th polygon:nth-of-type(3){ fill: url(#svg-grad-th-right); }

.blk-th{
  width: 34px; height: 34px;
}
.blk-h{
  width: 33px; height: 34px;
}
.blk-t{
  width: 54px; height: 14px;
}
.blk-o{
  width: 16px; height: 16px;
}

/* 圖例大卡片中的放大尺寸 */
.legend-card .blk-th{ width: 46px; height: 46px; }
.legend-card .blk-h{ width: 44px; height: 46px; }
.legend-card .blk-t{ width: 68px; height: 17px; }
.legend-card .blk-o{ width: 20px; height: 20px; }

/* 5 個一組積木群組容器 (5-Grouping Layout) */
.blk-group-5{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 4px 6px;
  background: rgba(51,43,34,.03);
  border-radius: 10px;
  border: 1.5px dashed rgba(51,43,34,.16);
  margin: 2px 4px;
  flex-wrap: wrap;
  transition: all .2s ease;
}

.quiz-blocks .grp .row{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  max-width: 280px;
}


/* 進位提示強化：攀升脈衝圓圈（多色三層波紋） */
.carry-burst{
  position: fixed;
  border-radius: 50%;
  border: 3px solid #2b6ef2;
  pointer-events: none;
  z-index: 9997;
  transform-origin: center;
  animation: carryBurstAnim .65s cubic-bezier(.2,.8,.4,1) forwards;
}
@keyframes carryBurstAnim{
  0%  { transform: translate(-50%,-50%) scale(.2); opacity: 1; }
  60% { opacity: .7; }
  100%{ transform: translate(-50%,-50%) scale(3.2); opacity: 0; }
}

/* 落地閃光：積木抵達目標欄的光暈爆破 */
.land-burst{
  position: fixed;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%) scale(0);
  animation: landBurstAnim .45s ease-out forwards;
}
@keyframes landBurstAnim{
  0%  { transform: translate(-50%,-50%) scale(0);   opacity: 1; }
  50% { transform: translate(-50%,-50%) scale(2.8); opacity: .7; }
  100%{ transform: translate(-50%,-50%) scale(4.5); opacity: 0; }
}

/* 粒子噴射：四方向小圓點 */
.carry-particle{
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #f59e0b;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
}

/* 欄位震動：來源欄在進位時短暫搖動 */
.col-shake{
  animation: colShakeAnim .32s ease;
}
@keyframes colShakeAnim{
  0%   { transform: translateX(0); }
  20%  { transform: translateX(-4px) rotate(-1.5deg); }
  50%  { transform: translateX(3px) rotate(1deg); }
  80%  { transform: translateX(-2px); }
  100% { transform: translateX(0); }
}