/* ============================================================
   小游戏 · 共享外壳样式（2048 / 贪吃蛇 / 扫雷 统一视觉）
   ============================================================ */
:root{
  --bg:#05060f;
  --ink:#eef2ff;
  --muted:#9aa4c7;
  --cyan:#6fe6ff;
  --violet:#b78cff;
  --pink:#ff8fd8;
  --line:rgba(255,255,255,.12);
  --glass:rgba(255,255,255,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overscroll-behavior:none}
body{
  background:radial-gradient(1200px 820px at 50% -12%,#111a33 0%,#05060f 62%) fixed,#05060f;
  color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
  user-select:none;-webkit-user-select:none;
  display:flex;flex-direction:column;min-height:100%;
}
a{color:inherit;text-decoration:none}

/* 顶栏 */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px}
.back{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--muted);
  padding:8px 16px;border-radius:999px;border:1px solid rgba(255,255,255,.2);
  background:linear-gradient(180deg,rgba(255,255,255,.11),rgba(255,255,255,.04));
  backdrop-filter:blur(20px) saturate(170%);-webkit-backdrop-filter:blur(20px) saturate(170%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4);transition:.25s}
.back:hover{color:var(--ink);border-color:rgba(255,255,255,.42)}
.title{font-size:15px;font-weight:800;letter-spacing:.06em;opacity:.9}
.topspacer{width:82px}

/* 主体 */
.wrap{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  padding:6px 16px 30px}

/* 状态栏 */
.hud{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.stat{display:flex;flex-direction:column;align-items:center;gap:3px;min-width:92px;
  padding:10px 16px;border-radius:14px;background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.stat .k{font-size:11px;color:var(--muted);letter-spacing:.14em}
.stat .v{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums}

/* 面板 / 按钮 / 提示 */
.panel{padding:14px;border-radius:22px;
  background:linear-gradient(180deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 24px 60px -28px #000}
.row{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.btn{border:1px solid rgba(255,255,255,.2);cursor:pointer;font:inherit;font-size:14px;font-weight:700;color:var(--ink);
  padding:11px 22px;border-radius:999px;
  background:linear-gradient(180deg,rgba(255,255,255,.11),rgba(255,255,255,.04));
  backdrop-filter:blur(20px) saturate(170%);-webkit-backdrop-filter:blur(20px) saturate(170%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4);
  transition:border-color .2s,background .2s,transform .15s}
.btn:hover{border-color:rgba(255,255,255,.42);background:rgba(255,255,255,.14)}
.btn:active{transform:scale(.97)}
.btn.primary{background:linear-gradient(180deg,rgba(255,255,255,.19),rgba(255,255,255,.07));border-color:rgba(255,255,255,.32)}
.btn.on{border-color:rgba(111,230,255,.6);background:rgba(111,230,255,.14)}
.hint{color:var(--muted);font-size:12.5px;text-align:center;line-height:1.75;max-width:540px}

/* toast：灰底白字 */
.toast{position:fixed;left:50%;bottom:36px;transform:translateX(-50%);z-index:99;pointer-events:none;
  padding:12px 22px;border-radius:999px;font-size:14px;font-weight:700;color:#fff;
  background:rgba(74,78,94,.94);border:1px solid rgba(255,255,255,.16);
  backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:0 14px 40px -12px rgba(0,0,0,.7);opacity:0;transition:.3s}

/* ============================================================
   2048
   ============================================================ */
.g2048{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);
  gap:11px;width:min(84vw,400px);aspect-ratio:1/1;
  background:rgba(0,0,0,.28);padding:11px;border-radius:18px;border:1px solid var(--line);
  touch-action:none}
.g2048 .cell{display:grid;place-items:center;border-radius:12px;
  background:rgba(255,255,255,.045);
  font-weight:800;font-size:clamp(17px,5.4vw,32px);font-variant-numeric:tabular-nums;
  transition:background .12s ease,color .12s ease,transform .08s ease}
.g2048 .cell.pop{transform:scale(1.06)}

/* ============================================================
   贪吃蛇
   ============================================================ */
#snakeCv{display:block;width:min(84vw,400px);height:min(84vw,400px);border-radius:16px;
  background:rgba(0,0,0,.28);border:1px solid var(--line);touch-action:none}
.dpad{display:grid;grid-template-columns:repeat(3,64px);grid-template-rows:repeat(2,64px);gap:10px;justify-content:center}
.dpad button{border:1px solid rgba(255,255,255,.2);color:var(--ink);border-radius:16px;
  font-size:20px;cursor:pointer;
  background:linear-gradient(180deg,rgba(255,255,255,.11),rgba(255,255,255,.04));
  backdrop-filter:blur(20px) saturate(170%);-webkit-backdrop-filter:blur(20px) saturate(170%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4);
  transition:border-color .15s,background .15s}
.dpad button:hover{border-color:rgba(255,255,255,.42);background:rgba(255,255,255,.14)}
.dpad .sp{visibility:hidden}
@media (hover:hover) and (pointer:fine){.dpad{display:none}}   /* 桌面用键盘，不显示方向键 */

/* ============================================================
   扫雷
   ============================================================ */
.ms-grid{display:grid;gap:6px;justify-content:center}
.ms-cell{width:var(--cs,34px);height:var(--cs,34px);border-radius:8px;cursor:pointer;
  display:grid;place-items:center;font-weight:800;font-size:calc(var(--cs,34px) * .46);
  background:linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,.05));
  border:1px solid var(--line);color:var(--ink);font-variant-numeric:tabular-nums;
  transition:background .12s,transform .06s}
.ms-cell:hover{background:rgba(255,255,255,.16)}
.ms-cell:active{transform:scale(.95)}
.ms-cell.open{background:rgba(0,0,0,.3);cursor:default;border-color:rgba(255,255,255,.06)}
.ms-cell.open:hover{background:rgba(0,0,0,.3)}
.ms-panel{max-width:min(96vw,980px);overflow:auto}
.ms-cell.flag{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ff8fd8' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 22V3'/%3E%3Cpath d='M6 4h12l-2.5 4.5L18 13H6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;background-size:60%;
  background-color:rgba(255,143,216,.12)}
.ms-cell.mine{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ff8fd8' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='12' cy='12' r='5.5'/%3E%3Cpath d='M12 2v3M12 19v3M2 12h3M19 12h3M5.6 5.6l2.1 2.1M16.3 16.3l2.1 2.1M18.4 5.6l-2.1 2.1M7.7 16.3l-2.1 2.1'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:center;background-size:64%;
  background-color:rgba(255,143,216,.20)}
.ms-cell.boom{background-color:rgba(255,90,90,.5)}
.ms-cell.n1{color:#6fe6ff}.ms-cell.n2{color:#7df0b0}.ms-cell.n3{color:#ffd479}
.ms-cell.n4{color:#b78cff}.ms-cell.n5{color:#ff9d6b}.ms-cell.n6{color:#6bffd6}
.ms-cell.n7{color:#e6e6ff}.ms-cell.n8{color:#9aa4c7}

@media (max-width:640px){
  .stat{min-width:76px;padding:8px 12px}
  .stat .v{font-size:17px}
  .hint{font-size:12px}
  /* 手机分辨率：扫雷只保留初级，隐藏中级/高级 */
  [data-level="mid"],[data-level="hard"]{display:none}
}