/* ============================================================
   街机游戏大厅 · 简洁风格（仿 4399 小游戏门户）
   设计原则：浅色、密集网格、零装饰动画、低功耗
   ============================================================ */
:root{
  --bg:#f2f3f5;
  --card:#ffffff;
  --line:#e3e6ea;
  --text:#22262e;
  --text-2:#8a909c;
  --accent:#3a8ee6;          /* 门户蓝 */
  --accent-dark:#2b7ccc;
  --hot:#ff5b35;             /* 热度橙红 */
  --star:#f5a623;
  --radius:6px;
  --shadow:0 1px 3px rgba(20,24,32,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--text);
  font:14px/1.5 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
  min-height:100vh;
}
img{display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
kbd{
  display:inline-block;padding:1px 6px;border:1px solid var(--line);border-bottom-width:2px;
  border-radius:4px;background:#f7f8fa;font-size:12px;font-family:inherit;
}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  background:#fff;border-bottom:1px solid var(--line);
}
.topbar-inner{
  max-width:1200px;margin:0 auto;padding:0 16px;height:52px;
  display:flex;align-items:center;gap:16px;
}
.logo{display:flex;align-items:center;gap:8px;font-size:17px;font-weight:700;white-space:nowrap}
.logo-icon{font-size:22px}
.search-wrap{flex:1;max-width:420px;position:relative}
.search{
  width:100%;height:34px;padding:0 30px 0 12px;
  border:1px solid var(--line);border-radius:17px;background:#f5f6f8;
  font-size:13px;outline:none;transition:border-color .15s, background .15s;
}
.search:focus{border-color:var(--accent);background:#fff}
.search::-webkit-search-cancel-button{display:none}
.search-clear{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:20px;height:20px;border-radius:50%;background:#d4d8de;color:#fff;
  font-size:13px;line-height:19px;text-align:center;
}
.search-clear:hover{background:#b6bcc4}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.device-badge{
  font-size:12px;color:var(--text-2);
  border:1px solid var(--line);border-radius:4px;padding:2px 8px;background:#f7f8fa;
}
.btn-keys{
  font-size:13px;color:var(--accent);padding:5px 10px;border-radius:4px;
}
.btn-keys:hover{background:#eef5fd}
.btn-online-nav{
  background:var(--accent);color:#fff;font-weight:600;padding:5px 12px;border-radius:999px;
  text-decoration:none;white-space:nowrap;
}
.btn-online-nav:hover{background:var(--accent-dark);color:#fff}

/* ---------- 主体 ---------- */
.container{max-width:1200px;margin:0 auto;padding:12px 16px 32px}

/* 分类标签 */
.filters{
  display:flex;flex-wrap:wrap;gap:6px;
  padding:8px 0 12px;border-bottom:1px solid var(--line);margin-bottom:12px;
}
.chip{
  padding:4px 14px;border-radius:15px;font-size:13px;
  background:#fff;border:1px solid var(--line);color:var(--text-2);
  transition:color .15s, border-color .15s, background .15s;
}
.chip:hover{color:var(--accent);border-color:var(--accent)}
.chip.active{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}

/* 统计行 */
.stats{font-size:12px;color:var(--text-2);margin-bottom:10px}
.stats b{color:var(--text)}

/* ---------- 游戏网格（密集排布） ---------- */
.game-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(150px,1fr));
  gap:10px;
}
@media (min-width:900px){ .game-grid{grid-template-columns:repeat(auto-fill,minmax(168px,1fr))} }

.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;cursor:pointer;position:relative;
  content-visibility:auto;
  contain-intrinsic-size:auto 178px;
  transition:border-color .15s, box-shadow .15s;
}
.card:hover{border-color:var(--accent);box-shadow:0 2px 8px rgba(58,142,230,.18)}
.card:active{transform:scale(.985)}

.thumb-wrap{
  position:relative;width:100%;aspect-ratio:4/3;background:#eef0f3;overflow:hidden;
}
.thumb-img{width:100%;height:100%;object-fit:cover}
.thumb{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:40px;background:linear-gradient(135deg,#e8ecf2,#f6f7f9);
}

/* 角标（纯文字小标签，无毛玻璃） */
.card .tag{
  position:absolute;top:6px;right:6px;z-index:2;
  font-size:11px;padding:1px 7px;border-radius:3px;font-weight:700;letter-spacing:0;
  background:rgba(255,255,255,.92);color:var(--text-2);border:1px solid rgba(0,0,0,.06);
}
.tag.t3d{right:auto;left:6px;background:var(--hot);color:#fff;border:0}
.tag.treal{background:rgba(76,175,80,.92);color:#fff;border:0}
.tag.tonline{background:var(--accent);color:#fff;border:0}
.tag.temu{background:rgba(156,39,176,.92);color:#fff;border:0}
.tag.p2{top:auto;bottom:6px;left:6px;background:rgba(58,142,230,.92);color:#fff;border:0}
.tag.rom{background:rgba(245,166,35,.95);color:#fff;border:0}

.card .info{padding:7px 9px 9px}
.card .name{
  font-size:13px;font-weight:600;line-height:1.3;
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}
.card .meta{
  margin-top:2px;font-size:11px;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;
}

/* 收藏星标 */
.fav-star{
  position:absolute;top:6px;right:6px;z-index:3;
  width:24px;height:24px;border-radius:50%;
  background:rgba(255,255,255,.9);border:1px solid rgba(0,0,0,.06);
  color:#c4c9d1;font-size:13px;line-height:22px;text-align:center;
  transition:color .15s, transform .15s;
}
.fav-star:hover{color:var(--star);transform:scale(1.12)}
.fav-star.on{color:var(--star)}

/* 空状态 */
.empty-state{padding:60px 0;text-align:center;color:var(--text-2)}

/* ---------- 页脚 ---------- */
.footer{
  border-top:1px solid var(--line);background:#fff;
  padding:16px;text-align:center;font-size:12px;color:var(--text-2);
}

/* ---------- 弹窗 ---------- */
.modal{display:none}
.modal.open{
  position:fixed;inset:0;z-index:100;
  background:rgba(15,18,24,.45);
  display:flex;align-items:center;justify-content:center;padding:16px;
}
.modal-box{
  width:min(480px,100%);background:#fff;border-radius:8px;
  padding:20px 22px;box-shadow:0 8px 32px rgba(0,0,0,.18);
}
.modal-box h3{font-size:16px;margin-bottom:12px}
.keys-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}
.keys-grid h4{font-size:13px;color:var(--accent);margin-bottom:6px}
.keys-grid p{font-size:13px;color:var(--text-2);line-height:2}
.hint{font-size:12px;color:var(--text-2);margin-bottom:14px}
.btn-primary{
  display:block;width:100%;padding:9px 0;border-radius:5px;
  background:var(--accent);color:#fff;font-size:14px;font-weight:600;text-align:center;
}
.btn-primary:hover{background:var(--accent-dark)}

/* 尊重系统减少动画偏好（同时也是低功耗设备兜底） */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
}

/* ---------- 移动端适配（顶栏紧凑，防止联机按钮与键位按钮重叠） ---------- */
@media (max-width: 720px){
  .topbar-inner{height:48px;padding:0 10px;gap:8px}
  .logo-text{font-size:14px}
  .logo-icon{font-size:18px}
  .search-wrap{max-width:none}
  .device-badge{display:none}
  .btn-online-nav{font-size:12px;padding:4px 9px}
  .btn-keys{padding:4px 8px;font-size:12px}
}
@media (max-width: 420px){
  .topbar-inner{flex-wrap:wrap;height:auto;padding:6px 10px;row-gap:6px}
  .search-wrap{order:3;flex-basis:100%;max-width:none}
  .topbar-right{margin-left:0}
}

/* ---------- 游戏盒子客户端下载按钮 ---------- */
.btn-box{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;white-space:nowrap;
  background:linear-gradient(96deg,#2ecf7f,#1fa9f0);
  color:#fff;font-size:13px;font-weight:700;
  box-shadow:0 3px 10px rgba(31,169,240,.28);
  transition:transform .12s, box-shadow .12s;
}
.btn-box:hover{color:#fff;transform:translateY(-1px);box-shadow:0 5px 14px rgba(31,169,240,.36)}
.btn-box:active{transform:translateY(0)}
.btn-box-ic{display:flex;align-items:center;line-height:1}
.btn-box-ic svg{width:15px;height:15px}
.btn-box-tx em{font-style:normal;opacity:.86;font-weight:600}
@media (max-width:640px){
  .btn-box{padding:5px 10px;font-size:12px}
  .btn-box-ic{font-size:13px}
}
@media (max-width:420px){
  .btn-box-tx em{display:none}
}