/* 各游戏页共用壳层：顶栏、面板、按钮观感一致 */

.game-page .shell,
.game-page .app {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 2rem;
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
  padding-bottom: calc(2rem + env(safe-area-inset-bottom));
}

.game-page .topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.game-page .brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--cream);
  text-shadow: 0 2px 0 rgba(0, 0, 0, 0.25);
  line-height: 1;
}

.game-page .brand p,
.game-page .topbar-sub {
  margin: 0.25rem 0 0;
  color: rgba(248, 236, 214, 0.78);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.game-page .panel,
.game-page .card {
  background: var(--panel);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  border: 1px solid var(--panel-border);
  box-shadow: 0 10px 28px rgba(20, 12, 8, 0.18);
}

.game-page .card {
  padding: 1rem 1.1rem;
}

.game-page .card h2 {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.game-page button:not(.ui-button):not(.ui-dialog-titlebar-close),
.game-page .btn {
  appearance: none;
  border: none;
  border-radius: 12px;
  padding: 0.7rem 0.95rem;
  background: var(--accent);
  color: #f7fff9;
  font-family: var(--font-body);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 160ms ease, background 160ms ease;
}

.game-page button:hover:not(:disabled):not(.ui-button),
.game-page .btn:hover {
  background: var(--accent-soft);
  transform: translateY(-1px);
}

.game-page button.secondary,
.game-page .btn.secondary {
  background: transparent;
  color: var(--cream);
  border: 1px solid rgba(248, 236, 214, 0.35);
}

.game-page .panel button.secondary,
.game-page .card button.secondary,
.game-page .bn_box button.secondary,
.game-page .menu-link.secondary {
  color: var(--ink-soft);
  border: 1px solid rgba(61, 47, 38, 0.28);
}

.game-page button.danger {
  background: var(--danger);
}

.game-page select,
.game-page input[type="text"],
.game-page textarea {
  font-family: var(--font-body);
  border-radius: 10px;
  border: 1px solid rgba(61, 47, 38, 0.25);
  background: rgba(255, 255, 255, 0.55);
  color: var(--ink);
}

.game-page .footer-note {
  margin-top: 1.25rem;
  color: rgba(248, 236, 214, 0.65);
  font-size: 0.82rem;
  text-align: center;
  letter-spacing: 0.04em;
}

/* 棋类左右分栏：平板及以下改为单列，棋盘在上 */
.game-page .layout {
  width: 100%;
}

@media (max-width: 900px) {
  .game-page .shell,
  .game-page .app {
    width: min(100% - 1rem, 720px);
    padding-top: 0.85rem;
    padding-bottom: calc(1.35rem + env(safe-area-inset-bottom));
  }

  .game-page .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.9rem;
  }

  .game-page .topbar-actions {
    width: 100%;
  }

  .game-page .topbar-actions .btn {
    flex: 1;
    min-height: 44px;
  }

  .game-page .brand h1 {
    font-size: clamp(1.65rem, 8.5vw, 2.35rem);
    letter-spacing: 0.1em;
  }

  .game-page .brand p,
  .game-page .topbar-sub {
    font-size: 0.84rem;
    line-height: 1.4;
  }

  .game-page .layout {
    grid-template-columns: 1fr !important;
    gap: 0.85rem !important;
  }

  .game-page .board-wrap {
    padding: 0.55rem !important;
    border-radius: 14px;
  }

  .game-page .board-wrap canvas,
  .game-page #board,
  .game-page #chess {
    max-width: 100%;
    width: 100%;
    height: auto;
    touch-action: none;
  }

  .game-page .panel {
    gap: 0.7rem;
  }

  .game-page .card {
    padding: 0.85rem 0.95rem;
    border-radius: 14px;
  }

  .game-page .card h2 {
    font-size: 1.1rem;
  }

  .game-page .controls {
    gap: 0.45rem;
  }

  .game-page button:not(.ui-button):not(.ui-dialog-titlebar-close),
  .game-page .btn,
  .game-page .menu-link {
    min-height: 44px;
    padding: 0.72rem 0.85rem;
  }

  /* 避免 iOS 聚焦放大 */
  .game-page select,
  .game-page input[type="text"],
  .game-page textarea {
    font-size: 16px;
    min-height: 44px;
  }

  .game-page .footer-note {
    font-size: 0.75rem;
    margin-top: 0.85rem;
  }
}

@media (max-width: 480px) {
  .game-page .shell,
  .game-page .app {
    width: calc(100% - 0.75rem);
  }

  .game-page .controls {
    grid-template-columns: 1fr 1fr;
  }

  .game-page .help {
    font-size: 0.84rem;
  }
}