/* 24点专属样式（公共组件、变量见 ../../style.css）
   复用护眼童趣主题：暖色底、降饱和柔和配色、大圆角 */

#app {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px;
  align-items: start;
  width: 100%;
  max-width: 760px;   /* 限宽：侧栏 240 + 间距 20 + 玩法区 500 */
}

#sidebar {
  background: var(--panel);
  border-radius: 18px;
  padding: 22px 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.actions { display: flex; flex-direction: column; gap: 8px; }
.btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.btn-row .btn { padding: 10px 8px; }

/* 进度圆点 */
.progress-dots { display: flex; flex-wrap: wrap; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); transition: background .15s; }
.dot.current { background: var(--primary); opacity: 0.45; }
.dot.done { background: var(--primary); }

/* 已辅助时最佳栏灰显 */
.stat-value.muted { color: var(--primary); opacity: 0.4; }

/* 主区 */
#play-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  padding: 32px 24px;
  min-height: 380px;
  background: var(--panel);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

/* 牌 */
.cards { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; }
.card {
  flex: 0 0 88px; height: 112px;
  font-size: 34px; font-weight: 700;
  border: 1px solid var(--border); border-radius: 16px;
  background: var(--panel); color: var(--primary);
  cursor: pointer;
  box-shadow: 0 4px 12px -4px rgba(140, 100, 40, 0.18);
  transition: transform .12s, box-shadow .12s, background .12s, color .12s;
}
@media (hover: hover) {
  .card:hover:not(:disabled) { transform: translateY(-4px); box-shadow: 0 10px 20px -6px rgba(140, 100, 40, 0.28); }
}
.card.selected { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-4px); }
.card:active:not(:disabled) { transform: translateY(-1px); }
.card:disabled { opacity: 0.6; cursor: default; }

/* 运算符 */
.ops { display: flex; gap: 24px; margin-top: 10px;}
.op-btn {
  width: 58px; height: 58px; font-size: 26px; font-weight: 700;
  border: 1px solid var(--border); border-radius: 14px;
  background: var(--panel); color: var(--text); cursor: pointer;
  transition: background .12s, transform .08s;
}
@media (hover: hover) {
  .op-btn:hover:not(:disabled) { background: #efe6cf; }
}
.op-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.op-btn:active:not(:disabled) { transform: translateY(1px); }
.op-btn:disabled { opacity: 0.5; cursor: default; }

/* 合并信息 */
.merge-info { font-size: 18px; color: var(--text); min-height: 1.6em; font-variant-numeric: tabular-nums; }

/* 本题完成面板 */
.puzzle-done {
  display: flex; flex-direction: column; align-items: center; gap: 14px;
  padding: 22px 30px; background: #f0e9d6; border-radius: 16px;
}
.puzzle-done.hidden { display: none; }
.done-text { font-size: 16px; color: var(--text); text-align: center; line-height: 1.6; }
.sol-steps { font-size: 15px; color: var(--primary); font-variant-numeric: tabular-nums; }

/* 胜利弹窗记录行 */
.modal-content .win-record { color: var(--primary); font-size: 15px; min-height: 1.2em; }

/* 响应式 */
@media (max-width: 640px) {
  #app { grid-template-columns: 1fr; }
  .card { flex: 0 0 66px; height: 86px; font-size: 26px; }
  .op-btn { width: 48px; height: 48px; font-size: 22px; }
  #play-area { padding: 22px 16px; min-height: 300px; }
}