/* ============================================================
   管理后台 · 设计系统「现场控制台」
   墨色底 + 细网格纹理 / 青色单主色 / 等宽编号与状态 / 呼吸灯
   JS 契约保持：#atabs .atab .atab-page .card .msg.ok/.err/.info
   button.primary .bp.active .status-dot .on/.off .thumbs
   ============================================================ */
:root{
  --bg:#070B14;
  --panel:#0C1322;
  --panel2:#0F1A2E;
  --line:#1B2537;
  --line2:#26334D;
  --txt:#E6ECF8;
  --mut:#8B96B0;
  --dim:#566179;
  --acc:#39C6D6;
  --acc-deep:#1E8CA0;
  --green:#3DDC97;
  --amber:#FFC857;
  --red:#FB7185;
  --sans:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --r:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
::selection{background:rgba(57,198,214,.28)}
html{color-scheme:dark}

body{
  background:
    radial-gradient(1000px 560px at 88% -12%,rgba(57,198,214,.09),transparent 62%),
    radial-gradient(760px 460px at -8% 108%,rgba(30,140,160,.07),transparent 60%),
    linear-gradient(rgba(148,170,210,.03) 1px,transparent 1px),
    linear-gradient(90deg,rgba(148,170,210,.03) 1px,transparent 1px),
    var(--bg);
  background-size:auto,auto,44px 44px,44px 44px,auto;
  color:var(--txt);min-height:100vh;
  font:14px/1.65 var(--sans);
  -webkit-font-smoothing:antialiased;
}

/* ---------- 登录（未登录时居中的启动面板） ---------- */
#loginBox{max-width:392px;margin:15vh auto 0;position:relative;overflow:hidden}
#loginBox::before{content:"";position:absolute;inset:0 0 auto;height:2px;
  background:linear-gradient(90deg,var(--acc),transparent 70%)}
#loginBox::after{content:"SIGN IN";position:absolute;top:18px;right:20px;
  font:10px/1 var(--mono);letter-spacing:3px;color:var(--dim)}

/* ---------- 主框架：左侧导航 + 右侧内容 ---------- */
.shell{display:flex;min-height:100vh}
.side{width:234px;flex:none;border-right:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,19,34,.92),rgba(9,14,26,.92));
  padding:26px 16px 20px;display:flex;flex-direction:column;gap:6px;
  position:sticky;top:0;height:100vh}
.side-brand{padding:2px 10px 22px;display:flex;gap:12px;align-items:flex-start}
.side-brand .mark{width:10px;height:10px;border-radius:3px;margin-top:5px;flex:none;
  background:var(--acc);box-shadow:0 0 0 0 rgba(57,198,214,.5);animation:beacon 2.6s infinite}
@keyframes beacon{0%{box-shadow:0 0 0 0 rgba(57,198,214,.45)}70%{box-shadow:0 0 0 9px rgba(57,198,214,0)}100%{box-shadow:0 0 0 0 rgba(57,198,214,0)}}
.side-brand b{display:block;font-size:15.5px;font-weight:800;letter-spacing:.04em}
.side-brand span{display:block;margin-top:3px;font:10px/1 var(--mono);letter-spacing:3px;color:var(--dim)}

#atabs{display:flex;flex-direction:column;gap:3px}
.nav-cap{font:10px/1 var(--mono);letter-spacing:2.5px;color:var(--dim);padding:14px 12px 7px}
.atab{display:flex;align-items:center;gap:11px;width:100%;text-align:left;
  padding:10px 12px;font-size:13.5px;font-weight:600;letter-spacing:.02em;
  border-radius:10px;cursor:pointer;border:1px solid transparent;background:none;
  color:var(--mut);transition:color .15s,background .15s,border-color .15s;position:relative}
.atab .no{font:10.5px/1 var(--mono);color:var(--dim);letter-spacing:.5px;width:20px;flex:none;transition:color .15s}
.atab svg{width:15px;height:15px;flex:none;opacity:.75;transition:.15s}
.atab:hover{color:var(--txt);background:rgba(148,170,210,.06)}
.atab:hover .no{color:var(--mut)}
.atab.active{background:linear-gradient(100deg,rgba(57,198,214,.16),rgba(57,198,214,.05) 62%);
  border-color:rgba(57,198,214,.28);color:#fff}
.atab.active::before{content:"";position:absolute;left:-16px;top:8px;bottom:8px;width:2px;
  border-radius:2px;background:var(--acc);box-shadow:0 0 10px rgba(57,198,214,.8)}
.atab.active .no{color:var(--acc)}
.atab.active svg{opacity:1}

.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.side-state{padding:10px 12px;border:1px solid var(--line);border-radius:10px;
  font:11px/1.5 var(--mono);color:var(--dim);letter-spacing:.5px}
.side-state i{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:8px;
  background:var(--green);box-shadow:0 0 8px rgba(61,220,151,.7);animation:beacon 2.2s infinite}
.side-foot a{display:block;text-align:center;text-decoration:none;color:var(--mut);
  font-size:12.5px;font-weight:700;padding:9px;border-radius:9px;border:1px solid var(--line2);transition:.15s}
.side-foot a:hover{color:var(--txt);border-color:var(--acc);background:rgba(57,198,214,.06)}

.main{flex:1;min-width:0;padding:34px 38px 96px}
.main-head{max-width:1100px;margin:0 auto 24px;display:flex;align-items:flex-end;
  justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding-bottom:18px}
.main-head h1{font-size:21px;font-weight:800;letter-spacing:.03em;display:flex;align-items:center;gap:12px}
.main-head h1 .badge{font:10px/1 var(--mono);letter-spacing:2.5px;color:var(--dim);
  border:1px solid var(--line2);padding:5px 10px;border-radius:20px;font-weight:600}
.main-head .sub{color:var(--mut);font-size:12.5px;margin-top:6px}
.main-head .clock{font:12px/1 var(--mono);color:var(--dim);letter-spacing:1px;text-align:right;flex:none}
.main-head .clock b{display:block;font-size:19px;color:var(--mut);font-weight:600;letter-spacing:2px;margin-bottom:5px}

.pages{max-width:1100px;margin:0 auto}
.atab-page{display:none}
.atab-page.active{display:grid;grid-template-columns:repeat(auto-fit,minmax(344px,1fr));gap:18px;align-items:start}
.p-head{grid-column:1/-1;display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.p-head h2{font-size:17px;font-weight:800;letter-spacing:.04em}
.p-head p{color:var(--mut);font-size:12.5px;margin-top:4px}
.p-head .pg{font:11px/1 var(--mono);color:var(--dim);letter-spacing:2px;flex:none}

/* ---------- 卡片：编号 + 细边 + 悬浮抬升 ---------- */
.card{background:linear-gradient(180deg,var(--panel2),var(--panel) 42%);
  border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;
  transition:border-color .2s,transform .2s,box-shadow .2s;
  animation:cardIn .45s cubic-bezier(.2,.7,.3,1) both}
.atab-page.active .card:nth-of-type(2){animation-delay:.05s}
.atab-page.active .card:nth-of-type(3){animation-delay:.1s}
.atab-page.active .card:nth-of-type(4){animation-delay:.15s}
@keyframes cardIn{from{opacity:0;transform:translateY(10px)}}
.card:hover{border-color:var(--line2);transform:translateY(-1px);
  box-shadow:0 14px 34px -18px rgba(0,0,0,.65)}
.card.wide{grid-column:1/-1}
.card h2{font-size:14.5px;font-weight:800;letter-spacing:.04em;margin-bottom:5px;
  display:flex;align-items:center;gap:10px}
.card h2 .no{font:11px/1 var(--mono);color:var(--acc);letter-spacing:1px;
  border:1px solid rgba(57,198,214,.35);border-radius:6px;padding:3px 6px;flex:none}
.card .desc{color:var(--mut);font-size:12.5px;margin-bottom:16px}

/* ---------- 表单 ---------- */
label{display:block;font-size:12px;font-weight:700;color:var(--mut);letter-spacing:.04em;margin:15px 0 7px}
input,textarea,select{width:100%;padding:11px 13px;font-size:13.5px;border-radius:10px;
  background:rgba(7,11,20,.55);border:1px solid var(--line2);color:var(--txt);outline:none;transition:.15s}
input::placeholder,textarea::placeholder{color:var(--dim)}
input:focus,textarea:focus{border-color:var(--acc);background:rgba(57,198,214,.05);
  box-shadow:0 0 0 3px rgba(57,198,214,.10)}
textarea{min-height:110px;resize:vertical;font:12.5px/1.7 var(--mono)}
.row{display:flex;gap:14px}.row>div{flex:1}

/* ---------- 按钮 ---------- */
button{padding:10px 20px;font-size:13px;font-weight:700;letter-spacing:.03em;border-radius:10px;
  cursor:pointer;border:1px solid var(--line2);background:rgba(148,170,210,.07);color:var(--txt);transition:.18s}
button:hover{filter:brightness(1.25)}
button:active{transform:translateY(1px)}
button.primary{background:linear-gradient(115deg,#2AA5BC,#39C6D6);border:none;color:#04121C;
  box-shadow:0 8px 22px -10px rgba(57,198,214,.55)}
button.danger{color:var(--red);border-color:rgba(251,113,133,.38);background:rgba(251,113,133,.06)}

/* ---------- 消息条：左侧色签 ---------- */
.msg{margin-top:13px;font-size:13px;padding:11px 14px;border-radius:10px;display:none;
  border:1px solid var(--line);color:var(--mut)}
.msg.ok{display:block;color:var(--green);background:rgba(61,220,151,.07);
  border:1px solid rgba(61,220,151,.3);box-shadow:inset 3px 0 0 var(--green)}
.msg.err{display:block;color:var(--red);background:rgba(251,113,133,.07);
  border:1px solid rgba(251,113,133,.3);box-shadow:inset 3px 0 0 var(--red)}
.msg.info{display:block;color:var(--mut);background:rgba(148,170,210,.05);
  border:1px solid var(--line);box-shadow:inset 3px 0 0 var(--line2)}
.msg pre{white-space:pre-wrap;word-break:break-all;font:11.5px/1.6 var(--mono);margin-top:7px;color:var(--txt)}

/* ---------- 状态 ---------- */
.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:7px}
.on{color:var(--green)}.off{color:var(--amber)}

/* ---------- 表格：mono 表头 + 行悬浮 ---------- */
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
th{color:var(--dim);font:10.5px/1 var(--mono);letter-spacing:1.5px;text-transform:uppercase}
tbody tr, tr:hover td{transition:background .15s}
tr:hover td{background:rgba(148,170,210,.04)}
td .op{color:var(--red);cursor:pointer;font-size:12px}
td .op:hover{text-shadow:0 0 8px rgba(251,113,133,.6)}

/* ---------- 白板照 ---------- */
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.thumb{border:1px solid var(--line);border-radius:12px;padding:8px;background:rgba(7,11,20,.5);transition:.18s}
.thumb:hover{border-color:var(--line2);transform:translateY(-2px)}
.thumb img{width:100%;border-radius:8px;cursor:zoom-in}
.thumb .t{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-size:12px}
.thumb .t span{color:var(--mut)}
.thumb .t b{color:var(--red);cursor:pointer;font-weight:400}

/* ---------- 提示 ---------- */
.hint{font-size:12px;color:var(--dim);margin-top:8px;line-height:1.7}
.hint code{background:rgba(148,170,210,.08);padding:2px 7px;border-radius:5px;font:11.5px var(--mono);color:var(--mut)}

/* ---------- 品牌模板选择 ---------- */
.bp{padding:11px 20px;font-weight:700;border-radius:10px;cursor:pointer;letter-spacing:.02em;
  border:1px solid var(--line2);background:rgba(7,11,20,.5);color:var(--mut);transition:.18s}
.bp:hover{color:var(--txt);border-color:var(--acc)}
.bp.active{background:rgba(57,198,214,.12);border-color:var(--acc);color:var(--acc);
  box-shadow:inset 0 0 18px rgba(57,198,214,.08)}

/* ---------- 品牌 LOGO 上传 ---------- */
.logo-row{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.logo-box{width:176px;height:74px;flex:none;border:1px dashed var(--line2);border-radius:12px;
  display:grid;place-items:center;background:rgba(7,11,20,.5);padding:9px;position:relative}
.logo-box::before,.logo-box::after{content:"";position:absolute;background:var(--line2)}
.logo-box::before{width:9px;height:1px;left:-5px;top:50%}
.logo-box::after{width:1px;height:9px;left:50%;bottom:-5px}
.logo-box img{max-width:100%;max-height:100%;object-fit:contain}
.logo-box .ph{color:var(--dim);font:11px/1.5 var(--mono);letter-spacing:1px;text-align:center}

/* ---------- 投票二维码 ---------- */
#voteQr{border-radius:10px;background:#fff;padding:7px;width:122px;height:122px}
#voteUrl{font-family:var(--mono);font-size:12.5px;color:var(--acc)}

/* ---------- 移动端 ---------- */
@media(max-width:880px){
  .shell{flex-direction:column}
  .side{width:100%;height:auto;position:static;flex-direction:row;align-items:center;
    padding:12px 14px;gap:12px;overflow-x:auto}
  .side-brand{padding:0;gap:9px}
  .side-brand span{display:none}
  #atabs{flex-direction:row;flex:1;gap:6px}
  .nav-cap{display:none}
  .atab{width:auto;white-space:nowrap;padding:9px 12px}
  .atab .no{display:none}
  .atab.active::before{display:none}
  .side-foot{margin:0;display:none}
  .main{padding:22px 16px 70px}
  .row{flex-direction:column}
  .main-head .clock{display:none}
}