/* XiaoYu management console. Same tokens as the website (xaoyu.top). */
:root{--bg:#fff;--surface:#f5f5f7;--soft:#edf3fa;--ink:#1d1d1f;--muted:#65656b;--line:#d9dce2;--blue:#006acb;--blue-soft:#e5f1ff;--green:#1c7c3a;--green-soft:#e3f4e8;--amber:#9a5b00;--amber-soft:#fff3dc;--red:#c0281b;--red-soft:#fdeceb;--shadow:0 20px 50px -30px rgba(36,53,83,.35);--radius:14px;color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-synthesis:none}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#08090b;--surface:#14161b;--soft:#141c28;--ink:#f5f5f7;--muted:#aaaeb7;--line:#363b44;--blue:#72b8ff;--blue-soft:#18304b;--green:#6fd391;--green-soft:#123222;--amber:#f2b860;--amber-soft:#33260f;--red:#ff8a80;--red-soft:#3a1714;--shadow:0 20px 50px -30px #000;color-scheme:dark}}
:root[data-theme=dark]{--bg:#08090b;--surface:#14161b;--soft:#141c28;--ink:#f5f5f7;--muted:#aaaeb7;--line:#363b44;--blue:#72b8ff;--blue-soft:#18304b;--green:#6fd391;--green-soft:#123222;--amber:#f2b860;--amber-soft:#33260f;--red:#ff8a80;--red-soft:#3a1714;color-scheme:dark}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink)}
body{font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:0;letter-spacing:-.01em;line-height:1.25}
h1{font-size:26px}h2{font-size:19px}h3{font-size:16px}
p{margin:0}
.noscript{padding:24px}
.muted{color:var(--muted)}
.small{font-size:13px}
.mono{font-family:"SF Mono",Menlo,Consolas,monospace;font-size:13px;overflow-wrap:anywhere}
.stack{display:grid;gap:16px}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.spread{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.grow{flex:1 1 auto;min-width:0}

/* ---------------------------------------------------------- auth pages */
.auth{min-height:100vh;display:grid;place-items:center;padding:32px 16px;background:linear-gradient(180deg,var(--soft),var(--bg) 60%)}
.auth-card{width:min(440px,100%);background:var(--bg);border:1px solid var(--line);border-radius:22px;padding:32px 28px;box-shadow:var(--shadow);display:grid;gap:18px}
.brand{display:flex;gap:12px;align-items:center}
.brand img{width:40px;height:40px;border-radius:10px}
.brand b{display:block;font-size:17px}
.brand span{display:block;font-size:13px;color:var(--muted)}
.qr{display:grid;place-items:center;padding:12px;background:#fff;border-radius:12px;border:1px solid var(--line)}
.qr svg{max-width:100%;height:auto}
.codes{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;padding:14px;background:var(--surface);border-radius:12px}
.codes span{font-family:"SF Mono",Menlo,monospace;font-size:15px;letter-spacing:.06em;text-align:center}
.divider{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.tabs{display:flex;gap:4px;background:var(--surface);padding:4px;border-radius:12px}
.tabs button{flex:1;border:0;background:transparent;padding:8px 6px;border-radius:9px;color:var(--muted);font:inherit;font-size:14px;cursor:pointer;min-height:36px}
.row>select{width:auto;min-width:130px}
.tabs button{white-space:nowrap}
.tabs button[aria-selected=true]{background:var(--bg);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}

/* ---------------------------------------------------------- forms */
label{display:grid;gap:6px;font-size:14px;color:var(--muted)}
label.check{display:flex;gap:8px;align-items:center;color:var(--ink)}
input,select,textarea{font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:9px 12px;min-height:40px;width:100%}
input[type=checkbox],input[type=radio]{width:18px;min-height:18px;height:18px;accent-color:var(--blue)}
textarea{min-height:110px;resize:vertical}
input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid color-mix(in srgb,var(--blue) 45%,transparent);outline-offset:1px}
.code-input{font-family:"SF Mono",Menlo,monospace;font-size:22px;letter-spacing:.3em;text-align:center}
.form-grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.form-grid .full{grid-column:1/-1}
fieldset{border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin:0;display:grid;gap:10px}
legend{padding:0 6px;color:var(--muted);font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:10px;padding:8px 16px;min-height:40px;font:inherit;font-size:14px;font-weight:600;cursor:pointer;background:var(--blue);color:#fff;text-decoration:none;white-space:nowrap}
.btn:hover{filter:brightness(1.06);text-decoration:none}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.secondary{background:var(--surface);color:var(--ink);border-color:var(--line)}
.btn.danger{background:var(--red);color:#fff}
.btn.ghost{background:transparent;color:var(--blue)}
.btn.small{min-height:32px;padding:4px 10px;font-size:13px}
.btn.block{width:100%}
.msg{padding:10px 12px;border-radius:10px;font-size:14px;background:var(--surface)}
.msg.error{background:var(--red-soft);color:var(--red)}
.msg.ok{background:var(--green-soft);color:var(--green)}
.msg.warn{background:var(--amber-soft);color:var(--amber)}

/* ---------------------------------------------------------- shell */
.shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;overflow:auto;border-right:1px solid var(--line);background:var(--surface);padding:18px 12px;display:flex;flex-direction:column;gap:14px}
.side nav{display:grid;gap:2px}
.side nav a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;color:var(--ink);font-size:14px;min-height:40px}
.side nav a:hover{background:var(--soft);text-decoration:none}
.side nav a[aria-current=page]{background:var(--blue-soft);color:var(--blue);font-weight:600}
.side nav .group{margin:10px 12px 2px;font-size:12px;color:var(--muted)}
.side .badge{margin-left:auto}
.main{min-width:0;display:flex;flex-direction:column}
.top{position:sticky;top:0;z-index:5;display:flex;gap:12px;align-items:center;justify-content:space-between;padding:12px 24px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.6) blur(14px)}
.menu-btn{display:none}
.content{padding:24px;display:grid;gap:20px;max-width:1280px;width:100%}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;display:grid;gap:12px;min-width:0}
.kpis{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}
.kpi{border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;display:grid;gap:4px}
.kpi b{font-size:26px;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.kpi span{color:var(--muted);font-size:13px}
.grid2{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(340px,1fr))}
.badge{display:inline-flex;align-items:center;padding:1px 8px;border-radius:999px;font-size:12px;font-weight:600;background:var(--surface);color:var(--muted);white-space:nowrap}
.badge.ok{background:var(--green-soft);color:var(--green)}
.badge.warn{background:var(--amber-soft);color:var(--amber)}
.badge.bad{background:var(--red-soft);color:var(--red)}
.badge.info{background:var(--blue-soft);color:var(--blue)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:600;color:var(--muted);font-size:12px;background:var(--surface);white-space:nowrap}
tr:last-child td{border-bottom:0}
tbody tr.clickable{cursor:pointer}
tbody tr.clickable:hover{background:var(--soft)}
.empty{padding:24px;text-align:center;color:var(--muted)}
.pager{display:flex;gap:8px;align-items:center;justify-content:flex-end;font-size:13px;color:var(--muted)}
.chart{width:100%;height:auto;display:block}
.chart text{fill:var(--muted);font-size:11px}
.legend{display:flex;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.bar{height:8px;border-radius:999px;background:var(--surface);overflow:hidden}
.bar i{display:block;height:100%;background:var(--blue)}
.kv{display:grid;grid-template-columns:max-content 1fr;gap:6px 18px;font-size:14px}
.kv dt{color:var(--muted)}
.kv dd{margin:0;min-width:0;overflow-wrap:anywhere}
.timeline{display:grid;gap:8px;font-size:14px;max-height:420px;overflow:auto}
.timeline div{display:grid;grid-template-columns:150px 1fr;gap:10px;padding-bottom:8px;border-bottom:1px dashed var(--line)}
.thread{display:grid;gap:10px}
.bubble{padding:10px 14px;border-radius:12px;background:var(--surface);white-space:pre-wrap;overflow-wrap:anywhere}
.bubble.admin{background:var(--blue-soft)}
.toast{position:fixed;right:20px;bottom:20px;z-index:50;max-width:min(420px,calc(100vw - 40px));padding:12px 16px;border-radius:12px;background:var(--ink);color:var(--bg);box-shadow:var(--shadow);font-size:14px}
dialog{border:1px solid var(--line);border-radius:18px;padding:0;background:var(--bg);color:var(--ink);width:min(460px,calc(100vw - 32px));box-shadow:var(--shadow)}
dialog::backdrop{background:rgba(0,0,0,.4)}
dialog .dlg{padding:22px;display:grid;gap:14px}
.preview{white-space:pre-wrap;background:var(--surface);padding:12px;border-radius:10px;font-size:14px}

@media(max-width:900px){
  .shell{grid-template-columns:1fr}
  .side{position:fixed;inset:0 auto 0 0;width:260px;z-index:20;transform:translateX(-100%);transition:transform .2s ease}
  .shell.nav-open .side{transform:none;box-shadow:var(--shadow)}
  .menu-btn{display:inline-flex}
  .top{padding:10px 16px}
  .content{padding:16px}
  .timeline div{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}