/* ============================================================
   PlayVault — 共享样式表 (mobile-first, compact)
   小游戏平台，紧凑布局，PC 与移动端自适应
   ============================================================ */

/* ---------- Design tokens ---------- */
:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --ink:#1e2433;
  --muted:#697386;
  --primary:#4f46e5;
  --primary-weak:#eef0ff;
  --accent:#ff5a5f;          /* featured / hot */
  --gold:#f6b93b;            /* rating stars */
  --ok:#23a55a;
  --line:#e6e9f0;
  --radius:10px;
  --shadow:0 1px 3px rgba(20,25,45,.06);
  --shadow-lg:0 6px 20px rgba(20,25,45,.10);
  --nav-h:54px;
}

/* ---------- Reset / base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:15px;            /* 正文 ≥14px */
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
img,svg{vertical-align:middle}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font:inherit;color:var(--ink)}
.wrap{max-width:1100px;margin:0 auto;padding:0 14px}

/* ---------- Top navigation ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  height:var(--nav-h);
}
.nav .wrap{height:100%;display:flex;align-items:center;gap:14px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;color:var(--ink);white-space:nowrap}
.brand svg{color:var(--primary)}
.brand:hover{text-decoration:none}
.brand b{color:var(--primary)}
.nav-search{flex:1;min-width:0;display:flex;align-items:center;gap:6px;
  background:var(--bg);border:1px solid var(--line);border-radius:999px;padding:6px 12px}
.nav-search svg{color:var(--muted);flex:none}
.nav-search input{flex:1;min-width:0;border:none;background:none;outline:none;font-size:16px}
.nav-menu{display:none;flex-direction:column;position:absolute;top:var(--nav-h);left:0;right:0;
  background:var(--surface);border-bottom:1px solid var(--line);padding:6px 0;box-shadow:var(--shadow-lg)}
.nav-menu.open{display:flex}
.nav-menu a{padding:11px 16px;font-weight:500}
.nav-menu a:hover{background:var(--bg);text-decoration:none}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}

/* ---------- Language switcher (multi-language versions) ---------- */
.lang{appearance:none;-webkit-appearance:none;background:var(--surface);border:1px solid var(--line);
  border-radius:8px;padding:6px 24px 6px 10px;font-size:13px;font-weight:600;color:var(--ink);cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23697386'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 10px center}
.lang:focus{outline:2px solid var(--primary);outline-offset:1px}

/* ---------- Share popup ---------- */
.share-pop{position:fixed;inset:0;z-index:80;display:none;align-items:center;justify-content:center;
  background:rgba(15,19,32,.55);padding:16px}
.share-pop.show{display:flex}
.share-card{position:relative;background:var(--surface);border-radius:14px;padding:20px;width:100%;max-width:430px;
  box-shadow:var(--shadow-lg)}
.share-card .close-x{position:absolute;top:10px;right:12px;width:30px;height:30px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;color:var(--muted);font-size:18px}
.share-card .close-x:hover{background:var(--bg);color:var(--ink)}
.share-card h3{margin:0;font-size:18px}
.share-card .share-url{font-size:12px;color:var(--muted);background:var(--bg);border:1px solid var(--line);
  border-radius:8px;padding:8px 10px;margin:12px 0 14px;word-break:break-all}
.share-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.share-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:11px 6px;border-radius:9px;
  font-size:13px;font-weight:600;color:#fff;text-align:center}
.share-btn:hover{opacity:.88;text-decoration:none}
.share-card .copy-row{display:flex;gap:8px;margin-top:12px}
.copy-row .btn{flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:8px 16px;border-radius:8px;font-weight:600;font-size:14px;white-space:nowrap;
  transition:background .15s,color .15s}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:#4338ca;text-decoration:none}
.btn-ghost{background:var(--primary-weak);color:var(--primary)}
.btn-ghost:hover{background:#e2e5ff;text-decoration:none}
.btn-outline{border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.btn-outline:hover{background:var(--bg)}
.btn-sm{padding:5px 11px;font-size:13px}
.nav-burger{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:8px;color:var(--ink)}
.nav-burger:hover{background:var(--bg)}
.nav-user{display:none;align-items:center;gap:8px;font-size:14px;font-weight:600}
.nav-user .avatar{width:30px;height:30px;border-radius:50%;background:var(--primary);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:13px}

/* ---------- Search toggle（移动端图标，点开才出现搜索框） ---------- */
.search-toggle{display:none;align-items:center;justify-content:center;width:38px;height:38px;
  border-radius:8px;color:var(--ink)}
.search-toggle:hover{background:var(--bg)}

/* ---------- Back to top（第1屏隐藏，滚动后出现） ---------- */
.back-top{position:fixed;right:16px;bottom:18px;z-index:70;width:42px;height:42px;border-radius:10px;
  background:var(--surface);border:1px solid var(--line);color:var(--ink);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-lg);
  opacity:0;pointer-events:none;transform:translateY(8px);transition:opacity .2s,transform .2s}
.back-top.show{opacity:1;pointer-events:auto;transform:none}
.back-top:hover{background:var(--bg);text-decoration:none}

/* ---------- Responsive header ---------- */
@media (max-width:900px){
  .nav-search{display:none}
  .search-toggle{display:inline-flex}
  .nav-search.open{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;margin:0;
    background:var(--surface);border:none;border-bottom:1px solid var(--line);border-radius:0;
    padding:10px 14px;box-shadow:var(--shadow-lg)}
  .nav-search.open input{font-size:16px}
  .nav-user,.nav-user-login{display:none} /* 登录/注册移入汉堡菜单 */
  .nav-burger{display:inline-flex}
  .nav-menu .btn{width:auto;justify-content:center;margin:8px 12px}
}
@media (min-width:901px){
  .nav-burger{display:none}
  .search-toggle{display:none}
  .nav-user,.nav-user-login{display:inline-flex}
}

/* ---------- Hero (home) ---------- */
.hero{margin:16px 0;padding:22px;border-radius:14px;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(120deg,#4f46e5,#7c5ce0 55%,#ff5a5f)}
.hero h1{font-size:26px;line-height:1.2;margin-bottom:6px}
.hero p{font-size:15px;opacity:.92;max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.hero-tags a{color:#fff;border:1px solid rgba(255,255,255,.55);padding:4px 12px;border-radius:999px;font-size:13px}
.hero-tags a:hover{background:rgba(255,255,255,.18);text-decoration:none}

/* ---------- Section headers ---------- */
.sec-head{display:flex;align-items:center;justify-content:space-between;margin:18px 0 12px}
.sec-head h2{font-size:18px}
.sec-head .more{font-size:13px;color:var(--muted)}
.chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:thin}
.chip{flex:none;padding:6px 14px;border-radius:999px;background:var(--surface);border:1px solid var(--line);
  color:var(--ink);font-size:14px;font-weight:500}
.chip:hover{text-decoration:none;border-color:var(--primary);color:var(--primary)}
.chip.on{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ---------- Game grid / cards ---------- */
.grid{display:grid;gap:12px;grid-template-columns:repeat(2,1fr)}
@media (min-width:520px){.grid{grid-template-columns:repeat(3,1fr)}}
@media (min-width:768px){.grid{grid-template-columns:repeat(4,1fr)}}
@media (min-width:1024px){.grid{grid-template-columns:repeat(5,1fr)}}
.game-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .12s,box-shadow .12s}
.game-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.game-thumb{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;position:relative;color:#fff}
.game-thumb svg{width:38px;height:38px;opacity:.9}
.game-thumb .hot{position:absolute;top:8px;left:8px;background:var(--accent);color:#fff;
  font-size:11px;font-weight:700;padding:2px 8px;border-radius:6px}
.game-meta{padding:9px 11px;display:flex;flex-direction:column;gap:3px}
.game-meta .name{font-size:14px;font-weight:600;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.game-meta .row{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px}
.rating{color:var(--gold);display:inline-flex;align-items:center;gap:3px;font-weight:600}
.rating svg{width:12px;height:12px}
.cat{font-size:11px;background:var(--bg);color:var(--muted);padding:1px 7px;border-radius:6px}
.plays::before{content:"";display:inline-block;width:10px;height:10px;margin-right:4px}

/* ---------- Game detail ---------- */
.page-title{margin:16px 0 4px;font-size:20px}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:10px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.game-stage{background:#0f1320;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg)}
.game-stage iframe{display:block;width:100%;height:58vh;min-height:360px;border:0;background:#fff}
@media (min-width:900px){.game-stage iframe{height:640px}}
.game-toolbar{display:flex;align-items:center;flex-wrap:wrap;gap:6px;background:var(--surface);
  border-top:1px solid var(--line);padding:8px 10px}
.game-toolbar .grow{flex:1;min-width:0;color:var(--muted);font-size:13px}
.tb-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:8px;font-size:13px;font-weight:600;
  color:var(--ink);background:var(--bg);border:1px solid var(--line)}
.tb-btn:hover{background:var(--primary-weak);color:var(--primary);text-decoration:none}
.tb-btn svg{width:15px;height:15px}
.game-info{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;margin-top:14px;box-shadow:var(--shadow)}
.game-info h2{font-size:17px;margin-bottom:8px}
.game-info p{color:var(--muted);font-size:14px}
.stat-row{display:flex;gap:16px;margin:10px 0;flex-wrap:wrap;color:var(--muted);font-size:13px}
.stat-row b{color:var(--ink)}

/* ---------- Rating ---------- */
.rate-box{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:12px 14px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin-top:14px;box-shadow:var(--shadow)}
.rate-avg{display:inline-flex;align-items:baseline;gap:5px;font-size:22px;font-weight:700;color:var(--ink);line-height:1}
.rate-avg small{font-size:12px;color:var(--muted);font-weight:400}
.stars{display:inline-flex;align-items:center;gap:2px}
.stars button{width:30px;height:30px;font-size:24px;line-height:1;color:#d9dde7;transition:color .1s;cursor:pointer}
.stars button.on{color:var(--gold)}
/* 鼠标移到星组时整组变亮，移过当前星后面的恢复灰色 */
.stars:hover button{color:var(--gold)}
.stars button:hover ~ button{color:#d9dde7}
.rate-note{font-size:13px;color:var(--muted);margin-right:6px}
.game-info .rich{line-height:1.7;color:var(--ink);font-size:15px}
.game-info .rich p{margin:0 0 12px}
.game-info .rich h2,.game-info .rich h3,.game-info .rich h4{margin:16px 0 8px}
.game-info .rich ul,.game-info .rich ol{margin:0 0 12px;padding-left:20px}
.game-info .rich a{color:var(--primary)}
.game-info .rich img{max-width:100%;height:auto}

/* ---------- Comments ---------- */
.comments{margin-top:14px}
.cm-form{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:12px;display:flex;flex-direction:column;gap:8px;box-shadow:var(--shadow)}
.cm-form textarea{width:100%;min-height:72px;border:1px solid var(--line);border-radius:8px;
  padding:9px 11px;font-size:16px;resize:vertical;outline:none;background:#fff}
.cm-form textarea:focus{border-color:var(--primary)}
.cm-row{display:flex;gap:8px;align-items:center}
.cm-row input{flex:1;min-width:0;border:1px solid var(--line);border-radius:8px;padding:8px 11px;font-size:16px;outline:none}
.cm-row input:focus{border-color:var(--primary)}
.cm-list{list-style:none;margin-top:10px;display:flex;flex-direction:column;gap:8px}
.cm-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px}
.cm-item .cm-head{display:flex;gap:8px;align-items:center;margin-bottom:3px}
.cm-item .cm-name{font-weight:600;font-size:14px}
.cm-item .cm-time{font-size:12px;color:var(--muted);margin-left:auto}
.cm-item p{font-size:14px;color:var(--ink);word-break:break-word}
.cm-empty{color:var(--muted);font-size:14px;padding:14px 0}

/* ---------- Forms (login / register) ---------- */
.auth{max-width:400px;margin:26px auto;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:24px;box-shadow:var(--shadow)}
.auth h1{font-size:20px;margin-bottom:4px}
.auth .sub{color:var(--muted);font-size:14px;margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:5px}
.field input{width:100%;border:1px solid var(--line);border-radius:8px;padding:9px 11px;font-size:16px;outline:none;background:#fff}
.field input:focus{border-color:var(--primary)}
.hint{font-size:12px;color:var(--muted);margin-top:4px}
.form-note{font-size:13px;color:var(--muted);margin-top:12px;text-align:center}
.form-note a{font-weight:600}
.msg{display:none;font-size:13px;padding:8px 10px;border-radius:8px;margin-bottom:12px}
.msg.show{display:block}
.msg.ok{background:#e7f7ee;color:#166a3f}
.msg.err{background:#fdecec;color:#b3261e}

/* ---------- Member center ---------- */
.member-wrap{display:grid;gap:14px;margin:18px 0}
@media (min-width:820px){.member-wrap{grid-template-columns:230px 1fr}}
.member-side{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;height:fit-content;box-shadow:var(--shadow)}
.member-side .who{display:flex;align-items:center;gap:10px;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:8px}
.member-side .who .avatar{width:42px;height:42px;border-radius:50%;background:var(--primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;font-size:17px;font-weight:700}
.member-side .who b{display:block}
.member-side .who span{font-size:12px;color:var(--muted)}
.tabs{display:flex;flex-direction:column;gap:2px}
.tab{text-align:left;padding:9px 10px;border-radius:8px;font-size:14px;color:var(--ink);font-weight:500}
.tab:hover{background:var(--bg);text-decoration:none}
.tab.on{background:var(--primary-weak);color:var(--primary);font-weight:600}
.tab-logout{margin-top:14px;border-top:1px solid var(--line);padding-top:12px;color:#e5484d}
.tab-logout:hover{color:#c72a30;background:var(--bg)}
.member-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow)}
.member-panel h2{font-size:17px;margin-bottom:12px}
.panel{display:none}
.panel.on{display:block}
.list-item{display:flex;align-items:center;gap:12px;padding:9px 0;border-bottom:1px solid var(--line)}
.list-item:last-child{border-bottom:none}
.list-item .thumb{width:52px;height:38px;border-radius:6px;flex:none;display:flex;align-items:center;
  justify-content:center;color:#fff}
.list-item .thumb svg{width:20px;height:20px}
.list-item .li-name{font-weight:600;font-size:14px}
.list-item .li-sub{font-size:12px;color:var(--muted)}
.list-item .li-meta{margin-left:auto;text-align:right;flex:none}
.member-empty{color:var(--muted);font-size:14px;padding:18px 0;text-align:center}

/* ---------- Copyright / static pages ---------- */
.static-page{max-width:760px;margin:20px auto;background:var(--surface);border:1px solid var(--line);
  border-radius:14px;padding:22px;box-shadow:var(--shadow)}
.static-page h1{font-size:22px;margin-bottom:14px}
.static-page h2{font-size:16px;margin:18px 0 6px}
.static-page p,.static-page li{color:var(--muted);font-size:14px;margin-bottom:8px}
.static-page ul{padding-left:20px;margin-bottom:8px}

/* ---------- Footer ---------- */
.footer{background:#171b28;color:#b6bcc9;margin-top:30px;padding:26px 0 18px;font-size:13px}
.footer .cols{display:grid;gap:18px;grid-template-columns:repeat(2,1fr)}
@media (min-width:768px){.footer .cols{grid-template-columns:repeat(4,1fr)}}
.footer h4{color:#fff;font-size:14px;margin-bottom:8px}
.footer a{color:#b6bcc9;display:block;padding:3px 0}
.footer a:hover{color:#fff;text-decoration:none}
.footer .bottom{margin-top:18px;padding-top:14px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}
.footer .bottom span{opacity:.7}

/* ---------- Toast ---------- */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);
  background:#1e2433;color:#fff;padding:10px 18px;border-radius:10px;font-size:14px;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:99;max-width:88vw}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.ok{background:var(--ok)}
.toast.err{background:var(--accent)}

/* ---------- Pagination (category) ---------- */
.pager{display:flex;gap:6px;justify-content:center;margin:18px 0;flex-wrap:wrap}
.pager button,.pager span{min-width:34px;height:34px;padding:0 8px;border-radius:8px;background:var(--surface);
  border:1px solid var(--line);color:var(--ink);font-size:14px;display:inline-flex;align-items:center;justify-content:center}
.pager button:hover{border-color:var(--primary);color:var(--primary)}
.pager .on{background:var(--primary);color:#fff;border-color:var(--primary)}
.pager .ell{background:none;border:none}

/* ---------- Misc ---------- */
.toolbar-row{display:flex;align-items:center;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.toolbar-row .spacer{flex:1}
.toolbar-row select{border:1px solid var(--line);border-radius:8px;background:var(--surface);padding:7px 10px;font-size:14px}
.section-title{margin:16px 0 12px;font-size:18px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.content-page{max-width:760px;margin:10px 0 30px}.content-page h1{font-size:22px;margin:0 0 14px}.content-page .rich{line-height:1.7;color:var(--ink);font-size:15px}.content-page .rich h2{font-size:18px;margin:18px 0 8px}.content-page .rich p{margin:0 0 12px}.content-page .rich a{color:var(--primary)}