/* UUTV 直播平台 · 管理后台样式 */
:root{
  --bg:#0b0f19; --surface:#121a2c; --surface2:#16203a; --line:#1f2a44; --line2:#26314d;
  --text:#e9edf6; --muted:#8a94b0; --dim:#5d6a8c;
  --acc:#ff4d5e; --acc2:#ff7a45; --ok:#2dd4a7; --blue:#5b8cff;
  --radius:12px;
  --grad-live:linear-gradient(135deg,#ff4d5e,#ff7a45);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
code{background:#0a0f1d;border:1px solid var(--line);padding:2px 8px;border-radius:6px;font-size:12px;color:#ffd9a0;word-break:break-all}

/* ---------- 登录页 ---------- */
.login-body{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;background:radial-gradient(800px 400px at 70% -10%,#241a30 0%,var(--bg) 60%)}
.login-card{width:380px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:36px}
.login-logo{text-align:center;margin-bottom:26px}
.login-logo .logo-mark{background:var(--grad-live);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:34px;font-weight:800}
.login-logo h1{font-size:19px;margin-top:8px}
.login-logo p{color:var(--muted);font-size:13px;margin-top:2px}
.login-form label{display:block;font-size:13px;color:var(--muted);margin:14px 0 7px}
.login-form input{width:100%;background:#0e1424;border:1px solid var(--line);border-radius:10px;color:var(--text);padding:12px 14px;font-size:14px;outline:none}
.login-form input:focus{border-color:var(--acc)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 22px;border-radius:10px;font-size:14px;font-weight:600;border:0;cursor:pointer;transition:.15s;white-space:nowrap}
.btn-block{width:100%;margin-top:22px}
.btn-primary{background:var(--grad-live);color:#fff;box-shadow:0 6px 18px rgba(255,77,94,.25)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-danger{background:rgba(255,77,94,.14);color:#ff7584;border:1px solid rgba(255,77,94,.35)}
.btn-xs{padding:4px 11px;font-size:12px;border-radius:7px}
.back-home{display:block;text-align:center;color:var(--dim);font-size:12px;margin-top:20px}
.back-home:hover{color:var(--muted)}
.alert{border-radius:10px;padding:11px 16px;font-size:13px;margin-bottom:18px;border:1px solid}
.alert-err{background:rgba(255,77,94,.1);border-color:rgba(255,77,94,.35);color:#ff8b96}
.alert-ok{background:rgba(45,212,167,.1);border-color:rgba(45,212,167,.35);color:#5fe6bf}
.alert b{color:#fff}

/* ---------- 后台布局 ---------- */
.admin-body{display:flex;min-height:100vh}
.sidebar{width:210px;background:#0d1220;border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;flex:none}
.side-logo{display:flex;align-items:center;gap:10px;padding:20px 20px 16px;border-bottom:1px solid var(--line)}
.side-logo .logo-mark{background:var(--grad-live);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:22px;font-weight:800}
.side-logo b{font-size:14px}
.side-nav{flex:1;padding:14px 10px;display:flex;flex-direction:column;gap:4px}
.side-nav a{padding:11px 14px;border-radius:9px;color:var(--muted);font-size:14px;transition:.15s}
.side-nav a:hover{color:#fff;background:var(--surface)}
.side-nav a.on{background:var(--grad-live);color:#fff;font-weight:600}
.side-foot{padding:16px 20px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:8px;font-size:13px}
.side-foot a{color:var(--muted)}
.side-foot a:hover{color:#fff}
.admin-main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 26px;border-bottom:1px solid var(--line);background:rgba(13,18,32,.7);backdrop-filter:blur(10px);position:sticky;top:0;z-index:20}
.topbar h2{font-size:18px}
.topbar-user{display:flex;align-items:center;gap:10px}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--grad-live);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.topbar-user b{font-size:13px;display:block}
.topbar-user small{color:var(--dim);font-size:11px}
.content{padding:24px 26px;flex:1}
.admin-foot{padding:16px 26px;color:var(--dim);font-size:12px;border-top:1px solid var(--line)}

/* ---------- 卡片 ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px;margin-bottom:20px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.card-head h3{font-size:15px;font-weight:600}
.card-head span{color:var(--dim);font-size:12px}
.head-actions{display:flex;gap:8px;align-items:center}
.link{color:var(--blue);font-size:13px}

/* ---------- KPI ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}
.kpi-grid-6{grid-template-columns:repeat(6,1fr)}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.kpi small{color:var(--muted);font-size:12px;display:block}
.kpi b{display:block;font-size:26px;font-weight:800;margin-top:6px}
.kpi-live{border-color:rgba(255,77,94,.4);background:linear-gradient(160deg,rgba(255,77,94,.09),transparent)}
.bar{height:5px;background:#0a0f1d;border-radius:3px;margin-top:9px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--grad-live);border-radius:3px;width:0;transition:width .5s}
.bar-lg{height:9px;margin-top:7px}

/* ---------- 图表 ---------- */
.chart-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.chart-wide{grid-column:span 2}
.chart{width:100%}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:13px}
.table th{text-align:left;color:var(--muted);font-weight:500;font-size:12px;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
.table td{padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.table tr:hover td{background:rgba(255,255,255,.015)}
.td-empty{text-align:center;color:var(--dim);padding:36px !important}
.muted{color:var(--muted)}
.room-cell{display:flex;align-items:center;gap:11px;min-width:190px}
.room-cell b{display:block;font-size:13px;max-width:230px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.room-cell small{color:var(--muted);font-size:11px}
.mini-cover{width:52px;height:34px;border-radius:7px;overflow:hidden;flex:none;background:#0a0f1d}
.mini-cover img{width:100%;height:100%;object-fit:cover}
.key{font-weight:600}
.tag{display:inline-block;font-size:11px;padding:2px 9px;border-radius:12px;background:var(--surface2);border:1px solid var(--line2);color:var(--muted);margin-left:5px;vertical-align:middle}
.tag-sec{color:#ffb3a6;border-color:rgba(255,122,69,.4)}
.tag-admin{color:#ffd9a0;border-color:rgba(255,122,69,.4)}
.tag-broadcaster{color:#9db9ff;border-color:rgba(91,140,255,.4)}
.tag-editor{color:#5fe6bf;border-color:rgba(45,212,167,.35)}
.ok-text{color:var(--ok)}
.err-text{color:#ff8b96}
.row-actions{display:flex;gap:6px;flex-wrap:wrap}
.inline-form{display:inline-flex;gap:6px;align-items:center}
.mini-input{width:90px;background:#0e1424;border:1px solid var(--line);border-radius:7px;color:var(--text);padding:5px 8px;font-size:12px}
.mini-select{background:#0e1424;border:1px solid var(--line);border-radius:7px;color:var(--text);padding:5px 6px;font-size:12px}
.inline-check{display:inline-flex;align-items:center;gap:4px;font-size:12px;color:var(--muted);margin:0 4px}

/* ---------- 表单 ---------- */
.form{display:flex;flex-direction:column;gap:16px}
.form-card .form{max-width:900px}
.form-row{display:flex;gap:16px;flex-wrap:wrap;align-items:center}
.form-field{display:flex;flex-direction:column;gap:7px}
.form-field.grow{flex:1;min-width:200px}
.form-field label{font-size:13px;color:var(--muted)}
.form-field input[type=text],.form-field input[type=password],.form-field select,.form-field textarea,.filter-bar input,.filter-bar select{
  background:#0e1424;border:1px solid var(--line);border-radius:9px;color:var(--text);padding:10px 13px;font-size:14px;outline:none;width:100%
}
.form-field input:focus,.form-field select:focus,.form-field textarea:focus,.filter-bar input:focus,.filter-bar select:focus{border-color:var(--acc)}
.form-tip{font-size:12px;color:var(--dim)}
.check{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);cursor:pointer}
.check input{accent-color:var(--acc);width:15px;height:15px}
.form-actions{display:flex;gap:10px;margin-top:6px}
.form-inline-row{display:flex;gap:14px;align-items:flex-end}
.filter-bar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.filter-bar select{width:130px}
.filter-bar input{width:210px}
.filter-bar .btn{padding:9px 18px}

/* ---------- 推流码 ---------- */
.code-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.code-block{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:13px 15px}
.code-block.wide{grid-column:span 2}
.code-block label{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}
.copy-row{display:flex;gap:8px;align-items:center}
.copy-row code{flex:1;padding:9px 11px;font-size:12.5px;display:block}
.code-foot{display:flex;gap:22px;margin-top:18px;align-items:flex-start;flex-wrap:wrap}
.qr-box{text-align:center;flex:none}
.qr{width:128px;height:128px;background:#fff;border-radius:10px;padding:8px;display:flex;align-items:center;justify-content:center}
.qr img{width:112px;height:112px}
.qr-box small{display:block;color:var(--dim);font-size:11px;margin-top:7px}
.obs-tip{flex:1;min-width:280px}
.obs-tip b{font-size:13px;display:block;margin-bottom:8px}
.obs-tip ul{list-style:none;display:flex;flex-direction:column;gap:6px;font-size:12.5px;color:var(--muted)}
.obs-tip b{color:var(--text)}
.tips-list{list-style:none;display:flex;flex-direction:column;gap:9px;font-size:13px;color:var(--muted)}
.tips-list b{color:var(--text)}

/* ---------- 图片管理 ---------- */
.photo-admin-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.photo-admin{background:var(--bg2);border:1px solid var(--line);border-radius:10px;overflow:hidden}
.pa-img{position:relative;aspect-ratio:1/1;overflow:hidden}
.pa-img img{width:100%;height:100%;object-fit:cover}
.pa-hidden{position:absolute;inset:0;background:rgba(0,0,0,.62);display:flex;align-items:center;justify-content:center;color:#ffb3a6;font-size:12px}
.pa-meta{display:flex;align-items:center;justify-content:space-between;padding:7px 9px;font-size:11px}
.pa-check{accent-color:var(--acc)}
.pa-actions{display:flex;gap:5px;padding:0 9px 9px;flex-wrap:wrap}
.pa-actions .btn-xs{font-size:11px;padding:3px 8px}
.dz-admin{margin-bottom:16px}
.band-box{display:flex;flex-direction:column;gap:18px}
.band-item label{display:flex;justify-content:space-between;font-size:13px;color:var(--muted);margin-bottom:8px}
.band-item b{color:#fff}
.band-item small{color:var(--dim);font-size:12px}

@media (max-width:1000px){
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-grid-6{grid-template-columns:repeat(3,1fr)}
  .chart-grid{grid-template-columns:1fr}
  .chart-wide{grid-column:span 1}
  .code-grid{grid-template-columns:1fr}
  .code-block.wide{grid-column:span 1}
}
@media (max-width:720px){
  .admin-body{flex-direction:column}
  .sidebar{width:100%;height:auto;position:static;flex-direction:row;align-items:center;border-right:0;border-bottom:1px solid var(--line)}
  .side-logo{border:0;padding:12px 16px}
  .side-nav{flex-direction:row;overflow-x:auto;padding:8px}
  .side-foot{display:none}
  .content{padding:16px}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
}