/* ==========================================================================
   华容道 · 页面样式
   ========================================================================== */

.game-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 22px;
  align-items: start;
}

.board-zone { min-width: 0; }

.status-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 18px;
  margin-bottom: 14px;
  font-size: 14.5px;
  min-height: 50px;
  flex-wrap: wrap;
}

.led {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 5px 12px;
}

.led b { color: var(--accent); }

.status-text { color: var(--text); font-weight: 600; margin-left: auto; }

/* ---------- 棋盘 ---------- */
.board-wrap { display: flex; justify-content: center; }

.klotski-board {
  --cell: 72px;
  --gap: 4px;
  position: relative;
  width: calc(var(--cell) * 4 + var(--gap) * 3 + 12px);
  height: calc(var(--cell) * 5 + var(--gap) * 4 + 12px);
  background: linear-gradient(160deg, #3a2f24, #241c14);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

/* 出口标记 */
.exit-mark {
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: calc(var(--cell) * 2 + var(--gap));
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  color: rgba(245, 176, 74, 0.75);
  background: rgba(245, 176, 74, 0.1);
  border-radius: 8px 8px 0 0;
  pointer-events: none;
}

.kpiece {
  position: absolute;
  display: grid;
  place-items: center;
  border-radius: 10px;
  font-family: "STKaiti", "KaiTi", "BiauKai", serif;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.16s ease-out;
  user-select: none;
  -webkit-user-select: none;
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.35), inset 0 0 0 1.5px rgba(0, 0, 0, 0.2);
}

.kpiece.sel {
  box-shadow: 0 0 0 2.5px var(--accent), 0 3px 0 rgba(0, 0, 0, 0.35);
  z-index: 2;
}

.kpiece.cao {
  background: linear-gradient(160deg, #e8b56b, #c98f45);
  color: #4a2c10;
  font-size: calc(var(--cell) * 0.52);
}

.kpiece.hgen {
  background: linear-gradient(160deg, #6f9bd6, #4a6fa5);
  color: #10233f;
  font-size: calc(var(--cell) * 0.46);
}

.kpiece.guanyu {
  background: linear-gradient(160deg, #d67c6f, #a54a3e);
  color: #fff;
  font-size: calc(var(--cell) * 0.46);
}

.kpiece.soldier {
  background: linear-gradient(160deg, #9aa7b8, #6b7889);
  color: #14181f;
  font-size: calc(var(--cell) * 0.4);
}

.kpiece.hintpiece {
  animation: hintFlash 0.7s ease-in-out 2;
}

@keyframes hintFlash {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.6) saturate(1.4); }
}

/* ---------- 侧栏 ---------- */
.panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: sticky;
  top: 84px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.card.grow { flex: 1; }

.card-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.field-note {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 8px;
  line-height: 1.6;
}

.segmented {
  display: flex;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
  gap: 4px;
}

.segmented button {
  flex: 1;
  font-family: var(--font);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-faint);
  background: transparent;
  border: none;
  border-radius: 9px;
  padding: 8px 4px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}

.segmented button:hover { color: var(--text-dim); }

.segmented button.on {
  color: var(--text);
  background: var(--surface-2);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(245, 176, 74, 0.25) inset;
}

.btn-row { display: flex; gap: 10px; }

.btn-row .btn { flex: 1; padding: 10px 6px; font-size: 13px; }

/* ---------- 弹窗 / Toast ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(6, 8, 12, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.overlay.show { opacity: 1; pointer-events: auto; }

.dialog {
  width: min(420px, calc(100vw - 40px));
  background: linear-gradient(165deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border-strong);
  border-radius: 22px;
  padding: 36px 32px 30px;
  text-align: center;
  box-shadow: 0 40px 90px -20px rgba(0, 0, 0, 0.8);
  transform: translateY(14px) scale(0.96);
  transition: transform 0.3s cubic-bezier(0.2, 0.7, 0.3, 1.2);
}

.overlay.show .dialog { transform: translateY(0) scale(1); }

.dialog-icon { font-size: 52px; line-height: 1; margin-bottom: 14px; }

.dialog h2 { font-size: 24px; font-weight: 800; }

.dialog > p { color: var(--text-dim); font-size: 14.5px; margin-top: 8px; }

.dialog-btns { display: flex; gap: 12px; margin-top: 26px; justify-content: center; }

.dialog-btns .btn { min-width: 110px; }

.rules-body { text-align: left; margin-top: 14px; display: flex; flex-direction: column; gap: 10px; }

.rules-body p { font-size: 13.5px; color: var(--text-dim); line-height: 1.7; }

.rules-body b { color: var(--text); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translate(-50%, 20px);
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: 999px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 400;
}

.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .game-layout { grid-template-columns: 1fr; }
  .panel { position: static; }
  .game-shell { padding: 20px 14px 48px; }
  .klotski-board { --cell: min(21vw, 72px); }
}