/* ============================================================
   styles/main.css — 全局样式
   设计变量集中在这里，后期换主题只改这一块
   ============================================================ */

:root {
  /* 主题色 */
  --bg-deep:      #0f0d16;
  --bg-mid:       #16131f;
  --bg-soft:      #2b2740;
  --panel:        #241f36;
  --panel-2:      #2e2a42;
  --text:         #f2ece0;
  --text-dim:     rgba(242, 236, 224, .6);
  --accent:       #ffd66b;
  --accent-deep:  #f0a500;
  --border:       rgba(255, 255, 255, .12);

  /* 棋盘色（经典木质） */
  --sq-light:     #f0dcb8;
  --sq-dark:      #b17f52;

  /* 棋子 */
  --piece-cell:   40px;   /* 由 JS 动态更新为实际格子边长 */
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  background:
    radial-gradient(circle at 50% -10%, #2b2740 0%, #16131f 55%, #0f0d16 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

#app {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

/* ---------------- 屏幕切换 ---------------- */

.screen {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.screen--active { display: flex; }

.screen--game {
  justify-content: flex-start;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

/* ---------------- 主菜单 ---------------- */

.menu-card {
  width: min(90vw, 360px);
  text-align: center;
  padding: 24px 8px 32px;
}

.menu-logo {
  display: block;
  width: 64px;
  height: 64px;
  margin: 0 auto 6px;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(255, 214, 107, .45));
}

.title {
  margin: 0 0 6px;
  font-size: clamp(38px, 12vw, 56px);
  font-weight: 800;
  letter-spacing: .14em;
  text-indent: .14em;
  background: linear-gradient(180deg, #fff0bd 0%, var(--accent) 45%, #d98f00 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  margin: 0 0 34px;
  font-size: 14px;
  letter-spacing: .18em;
  color: var(--text-dim);
}

.menu-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hint {
  margin: 28px 0 0;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--text-dim);
}

/* ---------------- 按钮 ---------------- */

.btn {
  appearance: none;
  width: 100%;
  padding: 14px 20px;
  font-family: inherit;
  font-size: 17px;
  color: var(--text);
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  border-radius: 14px;
  cursor: pointer;
  touch-action: manipulation;
  transition: transform .12s ease, background .2s ease, border-color .2s ease;
}

.btn:active { transform: scale(.97); }

.btn--primary {
  color: #3a2500;
  font-weight: 700;
  background: linear-gradient(180deg, #ffdc7d 0%, var(--accent) 40%, var(--accent-deep) 100%);
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(240, 165, 0, .32);
}

.icon-btn {
  flex: none;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  font-family: inherit;
  font-size: 20px;
  line-height: 1;
  color: var(--text);
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  touch-action: manipulation;
  transition: transform .12s ease;
}

.icon-btn:active { transform: scale(.92); }

/* 文字版 icon-btn（如“返回”），宽度自适应 */
.icon-btn--text {
  width: auto;
  min-width: 54px;
  padding: 0 12px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .05em;
}

/* ---------------- 顶部信息栏 ---------------- */

.hud {
  flex: none;
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px 10px;
}

.hud__mid {
  flex: 1;
  min-width: 0;
}

.hud__level {
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hud__score {
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-dim);
}

.hud__score b {
  font-size: 14px;
  color: var(--accent);
}

.hud__pawns {
  flex: none;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 13px;
  font-size: 15px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
}

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

.hud__pawn-icon {
  display: block;
  width: 18px;
  height: 18px;
  object-fit: contain;
}

/* ---------------- 棋盘 ---------------- */

.board-wrap {
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px 18px;
}

.board {
  --cell: 40px;

  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 1fr);

  width: min(92vw, 460px, calc(100vh - 175px));
  aspect-ratio: 1 / 1;

  border-radius: 8px;
  
  touch-action: manipulation;
  box-shadow:
    0 0 0 6px #3b2c1f,
    0 0 0 8px #221810,
    0 18px 46px rgba(0, 0, 0, .58);
}

@supports (height: 100dvh) {
  .board {
    width: min(92vw, 460px, calc(100dvh - 175px));
  }
}

.cell {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;

  margin: 0;
  padding: 0;
  border: 0;
  font-family: inherit;
  background-clip: padding-box;
  touch-action: manipulation;
  cursor: default;
}

/* 四个角的格子单独圆角，替代原来的 overflow: hidden */
.board .cell:nth-child(1)  { border-top-left-radius: 8px; }
.board .cell:nth-child(8)  { border-top-right-radius: 8px; }
.board .cell:nth-child(57) { border-bottom-left-radius: 8px; }
.board .cell:nth-child(64) { border-bottom-right-radius: 8px; }

.cell--light { background: var(--sq-light); }
.cell--dark  { background: var(--sq-dark); }

/* ---------------- 棋子 ---------------- */

.piece {
  width: 82%;
  height: 82%;
  object-fit: contain;
  display: block;

  /* 放大锚点 = 图片盒子的「底边中点」，放大时底部几乎不动，只往上长 */
  transform-origin: 50% 100%;

  /* 用独立的 scale 属性，不占用 transform，
     这样不会和马的 translate(移动) / transform(抖动) 打架 */
  scale: var(--piece-scale, 1);

  user-select: none;
  pointer-events: none;
  -webkit-user-drag: none;

  transition: transform .15s ease;
}

/* ↓↓ 以后只改这两个数就能调大小，1 = 原来的大小 ↓↓ */
.piece--knight { --piece-scale: 1.4; }
.piece--pawn   { --piece-scale: 1.4; }


/* 可吃目标：只保留指针样式，不显示光圈 */
.cell--target { cursor: pointer; }

/* ---------------- 弹窗 ---------------- */

.modal-root { position: relative; z-index: 100; }

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;

  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;

  background: rgba(8, 6, 14, .74);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);

  opacity: 0;
  transition: opacity .2s ease;
}

.modal-overlay.is-open { opacity: 1; }

.modal {
  width: min(92vw, 340px);
  padding: 24px 20px 18px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, .1);
  background: linear-gradient(180deg, var(--panel-2) 0%, var(--panel) 100%);
  box-shadow: 0 26px 64px rgba(0, 0, 0, .62);

  transform: translateY(14px) scale(.95);
  transition: transform .26s cubic-bezier(.2, .9, .3, 1.25);
}

.modal-overlay.is-open .modal { transform: none; }

.modal__title {
  margin: 0 0 6px;
  font-size: 21px;
  font-weight: 700;
  text-align: center;
  color: var(--accent);
}

.modal__subtitle {
  margin: 0 0 18px;
  font-size: 13px;
  text-align: center;
  color: var(--text-dim);
}

.modal__rows {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 20px;
}

.modal__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  font-size: 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, .05);
}

.modal__row-label { color: var(--text-dim); }

.modal__row-value {
  font-weight: 700;
  color: var(--text);
  text-align: right;
}

.modal__actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---------------- Toast ---------------- */

.toast-root {
  position: fixed;
  left: 0;
  right: 0;
  top: 16%;
  z-index: 200;

  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}

.toast {
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 700;
  color: #3a2500;
  background: rgba(255, 214, 107, .96);
  border-radius: 999px;
  box-shadow: 0 10px 26px rgba(0, 0, 0, .42);

  opacity: 0;
  transform: translateY(-10px) scale(.9);
  transition: all .26s cubic-bezier(.2, .9, .3, 1.3);
}

.toast.is-open {
  opacity: 1;
  transform: none;
}

/* ---------------- 棋盘下方 · 生成状态 / 调试面板 ---------------- */

.gen-status-root {
  flex: none;
  width: 100%;
  max-width: 520px;
  margin: 0 auto 10px;
  padding: 0 14px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-dim);
  min-height: 48px;
}

.gen-status {
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .08);
  margin-top: 6px;
  word-break: break-all;
}

.gen-status--ok    { border-color: rgba(78, 201, 176, .35); }
.gen-status--wait  { color: rgba(255, 214, 107, .9); border-color: rgba(255, 214, 107, .28); }
.gen-status--error { color: #ff9a8a; border-color: rgba(255, 100, 100, .4); background: rgba(255, 60, 60, .08); }

.gen-line + .gen-line { margin-top: 2px; }

.gen-line b { color: var(--text); }

.gen-answer {
  color: #8fd4ff;
  margin-top: 4px;
}

/* ---------------- HUD · 计时器 ---------------- */

.hud__timer {
  flex: none;
  min-width: 68px;
  padding: 8px 12px;
  font-size: 15px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  text-align: center;
  color: var(--accent);
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  border-radius: 999px;
}

/* ---------------- 个人记录 · 双列 ---------------- */

.records {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.records__col {
  padding: 10px 8px;
  min-height: 148px;
}

.records__col-title {
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: .08em;
  text-align: center;
  color: var(--text-dim);
}

.records__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.records__empty {
  padding: 28px 0;
  font-size: 12px;
  text-align: center;
  color: rgba(242, 236, 224, .28);
}

.records__item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
}

.records__medal {
  flex: none;
  width: 18px;
  font-size: 14px;
  line-height: 1;
  text-align: center;
}

.records__info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.records__level {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
}

.records__time {
  font-size: 11px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
/* ---------------- 主菜单 · 模式选择 ---------------- */

.mode-select {
  display: flex;
  margin: 0 0 30px;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, .04);
}

.mode-btn {
  flex: 1;
  padding: 11px 14px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  background: transparent;
  border: 0;
  cursor: pointer;
  touch-action: manipulation;
  transition: all .2s ease;
}

.mode-btn--active {
  color: #3a2500;
  background: linear-gradient(180deg, #ffdc7d 0%, var(--accent) 100%);
}

.mode-btn:not(.mode-btn--active):active {
  background: rgba(255, 255, 255, .06);
}

/* ---------------- HUD · 剩余步数（大师模式） ---------------- */

.hud__steps {
  display: none;
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-dim);
}

.hud__steps.is-visible { display: block; }

.hud__steps b {
  font-size: 14px;
  color: var(--accent);
}

/* ============================================================
   记录弹窗：本地 / 世界 tab
   ============================================================ */

.records-with-tabs {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.records-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.records-tab {
  flex: 1;
  max-width: 120px;
  padding: 8px 16px;
  font-family: inherit;
  font-size: 14px;
  color: var(--text-dim);
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  touch-action: manipulation;
  transition: background .15s, border-color .15s, color .15s;
}

.records-tab--active {
  color: #3a2500;
  font-weight: 600;
  background: linear-gradient(180deg, #ffdc7d 0%, var(--accent) 100%);
  border-color: transparent;
}

/* 世界 tab：两列整体滚动（不是每列各自滚） */
.records--world {
  max-height: 46vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* 加载中 / 失败：强制单列信息态，覆盖 .records 的 grid */
.records--message {
  display: block !important;
  overflow: visible;
}

/* ============================================================
   进前20弹窗：输入框（上下布局：输入框在上，提交按钮在下）
   ============================================================ */

.world-rank-stage {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0 16px;
}

.world-rank-input {
  width: 100%;
  padding: 11px 12px;
  font-family: inherit;
  font-size: 16px;        /* 16px 防止 iOS 聚焦时页面缩放 */
  text-align: center;
  letter-spacing: 1px;
  color: var(--text);
  background: rgba(0, 0, 0, .25);
  border: 1px solid var(--border);
  border-radius: 12px;
  outline: none;
}

.world-rank-input:focus { border-color: var(--accent); }

/* 提交上榜：默认金色 primary；禁用时真的变灰（覆盖 .btn--primary 的渐变和阴影） */
.world-rank-submit:disabled,
.world-rank-submit:disabled:active {
  color: var(--text-dim);
  background: rgba(255, 255, 255, .06);
  border-color: var(--border);
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.world-rank-error {
  margin-top: 2px;
  font-size: 13px;
  text-align: center;
  color: #ff6b6b;
}

.world-rank-success {
  padding: 14px 0;
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  color: var(--accent);
}