:root{
  --bg:#0f172a; --panel:#111827; --muted:#94a3b8; --text:#e5e7eb;
  --accent:#22d3ee; --accent2:#60a5fa; --good:#34d399; --bad:#f87171;
  --card:#1f2937; --card2:#0b1222; --shadow:0 12px 28px rgba(0,0,0,.35)
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 600px at 15% -10%, #14213d 0%, #0a0f1f 40%, #070b17 100%), var(--bg);
}

.wrap{max-width:1100px; margin:22px auto 8px; padding:0 16px}
h1{margin:0 0 6px; font-size:clamp(20px,3.5vw,30px); font-weight:900; letter-spacing:.2px;
  background-image: linear-gradient(90deg,var(--accent),var(--accent2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}

.muted{color:var(--muted); margin:0}

/* 工具栏 */
.toolbar{max-width:1100px; margin:14px auto; padding:12px 16px; display:grid; gap:10px;
  grid-template-columns: 1.1fr 0.9fr 0.9fr 0.9fr auto;
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(0,0,0,.18));
  border:1px solid rgba(255,255,255,.08); border-radius:16px; box-shadow:var(--shadow)
}
.ctrl{display:flex; flex-direction:column; gap:6px; min-width:0}
.ctrl label{font-size:12px; color:var(--muted)}
input[type="number"], select, button{
  padding:10px 12px; border-radius:10px; color:var(--text);
  border:1px solid rgba(255,255,255,.12); background:var(--card); outline:none
}
.btn{align-self:end; padding:10px 14px; border:none; border-radius:12px; font-weight:800; color:#071220; cursor:pointer;
  background-image: linear-gradient(135deg,var(--accent),var(--good)); transition:transform .12s ease; white-space:nowrap
}
.btn:hover{transform:translateY(-1px)}

/* 多选下拉 */
.ms{position:relative}
.ms>button{width:100%; padding:10px 12px; border:1px solid rgba(255,255,255,.12); border-radius:10px; background:var(--card); color:var(--text);
  display:flex; align-items:center; justify-content:space-between; cursor:pointer}
.ms .panel{position:absolute; left:0; right:0; top:calc(100% + 6px); z-index:50; background:var(--card);
  border:1px solid rgba(255,255,255,.15); border-radius:12px; box-shadow:var(--shadow); max-height:260px; overflow:auto; display:none; padding:8px}
.ms.open .panel{display:block}
.ms .row{display:flex; align-items:center; gap:10px; padding:6px 8px; border-radius:8px}
.ms .row:hover{background:rgba(255,255,255,.06)}
.ms .hint{font-size:12px; color:var(--muted); margin-top:6px}

/* 统计 */
.stats{max-width:1100px; margin:6px auto 14px; padding:0 16px; display:flex; gap:10px; flex-wrap:wrap}
.chip{padding:8px 12px; border-radius:999px; background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.08); font-size:13px}

/* 棋盘 */
.board-wrap{max-width:1100px; margin:0 auto 80px; padding:0 16px}
.board{display:grid; gap:12px; grid-template-columns: repeat(6, minmax(120px,1fr))}
@media (max-width:1000px){ .board{grid-template-columns: repeat(5, 1fr);} }
@media (max-width:800px){ .board{grid-template-columns: repeat(4, 1fr);} }
@media (max-width:560px){ .board{grid-template-columns: repeat(3, 1fr);} }

.card{position:relative; height:150px; perspective:800px}
.flip{position:absolute; inset:0; transition: transform .5s; transform-style:preserve-3d}
.face{position:absolute; inset:0; display:flex; align-items:center; justify-content:center; gap:6px; flex-direction:column;
  padding:10px; text-align:center; border-radius:14px; backface-visibility:hidden; border:1px solid rgba(255,255,255,.08);
  background: var(--card); box-shadow:var(--shadow); color:var(--text)
}
.front{
  font-size:26px;
  background: radial-gradient(600px 300px at 20% 0%, rgba(96,165,250,.12), rgba(0,0,0,.10)), var(--card2);
}
.back{background: radial-gradient(600px 300px at 20% 0%, rgba(34,211,238,.08), rgba(0,0,0,.1)), var(--card2);
  transform:rotateY(180deg)}
.card.revealed .flip{transform:rotateY(180deg)}
.card.matched{pointer-events:none; opacity:.92; outline:2px solid var(--good)}
.card.wrong{outline:2px solid var(--bad)}

.badge{position:absolute; top:8px; left:8px; font-size:11px; color:#031321;
  background-image:linear-gradient(135deg,#60a5fa,#22d3ee);
  border-radius:999px; padding:3px 8px; font-weight:700; border:1px solid rgba(255,255,255,.2)
}
.photo{width:100%; height:84px; object-fit:cover; border-radius:10px}
.label{font-weight:800; font-size: clamp(15px, 2.1vw, 22px)}
.sub{font-size:12px; color:var(--muted)}

/* 折叠说明 */
.legend{max-width:1100px; margin:16px auto; padding:12px 16px; color:var(--muted); font-size:13px}
details{border:1px solid rgba(255,255,255,.08); border-radius:12px; padding:10px 12px; background:rgba(255,255,255,.03)}
details[open] summary{margin-bottom:8px}
details summary{cursor:pointer; font-weight:800; color:var(--text)}
.vlist{display:grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap:8px; margin-top:4px}
.vitem{background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.08); padding:6px 8px; border-radius:10px; color:var(--text)}

/* === 强制让“词语文字”显示出来 === */

.board .card .face .label{
  color: var(--text) !important;          /* 保证不是透明 */
  opacity: 1 !important;                  /* 保证不是 0 */
  visibility: visible !important;         /* 保证不是隐藏 */
  white-space: normal;                    /* 避免被压扁 */
  position: relative;                     /* 层级定位 */
  z-index: 2;                             /* 压到图片上面 */
}

/* 如果你给 h1 做过渐变文字（background-clip:text），
   防止这个写法“误伤”到卡片里的 label */
.board .card .face .label{
  -webkit-background-clip: initial !important;
  background-clip: initial !important;
}

/* 确保图片层在文字层下面 */
.board .card .face .photo{
  position: relative;
  z-index: 1;
}

/* 防止有全局的 .label 样式把它变透明或缩成 0 行高 */
.board .card .face .label,
.board .card .face .sub{
  line-height: 1.2;
}