:root{
  --bar:#1e5fa3; --bar2:#174d86; --accent:#1e5fa3; --accent-soft:#dbe7f5;
  --bg:#f3f4f6; --card:#ffffff; --text:#1d2430; --muted:#6b7280; --line:#e3e6ea;
  --ok:#2e9e44; --off:#9ca3af; --warn:#ef8a00; --bad:#d32f2f; --violet:#7b3fbf;
  --btn:#eef2f7; --btn-text:#1e5fa3; --shadow:0 1px 3px rgba(0,0,0,.12);
}
:root[data-theme="dark"]{
  --bar:#152a44; --bar2:#0f2035; --accent:#5aa2ef; --accent-soft:#1d3552;
  --bg:#0f141b; --card:#18202a; --text:#e6ebf2; --muted:#93a0b2; --line:#283442;
  --btn:#213042; --btn-text:#9cc8f5; --shadow:0 1px 3px rgba(0,0,0,.5);
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:14px/1.4 "Roboto","Segoe UI",system-ui,sans-serif}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--accent)}
.hidden{display:none!important}
.muted{color:var(--muted)}
.small{font-size:12px}
svg.i{width:20px;height:20px;fill:currentColor;flex:none}

/* top bar */
header.top{position:sticky;top:0;z-index:20;background:var(--bar);color:#fff;display:flex;align-items:center;
  height:56px;padding:0 10px;gap:6px;box-shadow:0 2px 4px rgba(0,0,0,.2)}
header .brand{font-size:21px;font-weight:500;margin-left:6px;white-space:nowrap;letter-spacing:.2px}
header nav{flex:1;display:flex;justify-content:center;gap:4px}
header nav button,.iconbtn{background:none;border:0;color:#fff;cursor:pointer;border-radius:10px;
  padding:8px 16px;display:flex;align-items:center;position:relative}
header nav button.on{background:rgba(255,255,255,.85);color:var(--bar)}
:root[data-theme="dark"] header nav button.on{background:#2c4a6e;color:#fff}
.iconbtn{padding:8px}
.iconbtn:hover,header nav button:hover:not(.on){background:rgba(255,255,255,.12)}
.badge{position:absolute;top:2px;right:6px;background:var(--bad);color:#fff;border-radius:9px;font-size:10px;
  min-width:17px;height:17px;line-height:17px;text-align:center;padding:0 4px;font-weight:700}
.tools{display:flex;gap:2px}

/* layout */
.page{display:none}
.page.on{display:block}
#home{display:none}
#home.on{display:grid;grid-template-columns:300px 1fr;min-height:calc(100vh - 56px)}
aside.panel{background:var(--bg);border-right:1px solid var(--line);padding:12px 12px 80px;overflow:auto;
  position:sticky;top:56px;height:calc(100vh - 56px)}
.sec{display:flex;align-items:center;gap:8px;margin:16px 0 8px;font-weight:500}
.sec::after{content:"";flex:1;height:1px;background:var(--line)}
.chips{display:flex;flex-wrap:wrap;gap:6px;min-height:20px}
.chip{background:var(--card);box-shadow:var(--shadow);border-radius:8px;padding:5px 8px 5px 12px;display:flex;
  align-items:center;gap:6px;font-size:13px}
.chip button{background:none;border:0;color:var(--accent);cursor:pointer;font-weight:700;padding:0 2px}
.btns{display:flex;flex-wrap:wrap;gap:8px}
.btn{background:var(--btn);color:var(--btn-text);border:0;border-radius:20px;padding:8px 16px;cursor:pointer;
  display:inline-flex;align-items:center;gap:8px;box-shadow:var(--shadow);font-weight:500;white-space:nowrap}
.btn:hover{filter:brightness(.96)}
.btn.primary{background:var(--accent);color:#fff}
:root[data-theme="dark"] .btn.primary{color:#0b1724}
.btn.danger{background:#fdecec;color:var(--bad)}
:root[data-theme="dark"] .btn.danger{background:#3a1d1f;color:#ff8a80}
.btn.sm{padding:5px 12px;font-size:13px}
.btn:disabled{opacity:.5;cursor:default}

/* PC grid */
main.grid{padding:12px;display:grid;gap:10px;grid-template-columns:repeat(var(--cols,4),minmax(0,1fr));align-content:start}
.notice{grid-column:1/-1;background:#fff59d;color:#5d4600;padding:6px 10px;border-radius:4px;display:flex;gap:6px;align-items:center;font-size:13px}
:root[data-theme="dark"] .notice{background:#4a4210;color:#ffe98a}
.pc{background:var(--card);border-radius:10px;box-shadow:var(--shadow);overflow:hidden;align-self:start}
.pc .h{display:flex;align-items:center;gap:8px;padding:9px 10px;cursor:pointer;user-select:none}
.pc .h .name{flex:1;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pc .chev{transition:transform .15s;color:var(--text)}
.pc.collapsed .chev{transform:rotate(-90deg)}
.dot{width:13px;height:13px;border-radius:50%;background:var(--off);flex:none}
.dot.on{background:var(--ok)}
.dot.maint{background:var(--warn)}
.dot.lock{background:var(--violet)}
.cb{width:22px;height:22px;accent-color:var(--accent);cursor:pointer;flex:none}
.pc .shot{position:relative;aspect-ratio:16/10;background:#0b0f14;cursor:zoom-in;display:block;width:100%}
.pc .shot img{width:100%;height:100%;object-fit:cover;display:block}
.pc .shot .ph{position:absolute;inset:0;display:grid;place-items:center;color:#7b8794;font-size:12px}
.pc .tags{position:absolute;left:6px;top:6px;display:flex;gap:4px}
.tag{font-size:10px;font-weight:700;padding:2px 6px;border-radius:4px;color:#fff;background:var(--warn)}
.tag.lock{background:var(--violet)}.tag.alert{background:var(--bad)}.tag.nohelper{background:#555}
.pc .st{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:repeat(3,auto);grid-auto-flow:column;gap:2px 10px;padding:7px 10px 9px;font-size:12.5px}
.pc .st span{display:flex;align-items:center;gap:4px;white-space:nowrap}
.pc .st svg{width:15px;height:15px}
.pc.collapsed .body{display:none}
.pc.off .body{display:none}
.pc .meta.tmr{color:#0a8f3c;font-weight:600}
.pc .meta.tmr.zero{color:var(--bad)}
.pc .meta{padding:0 10px 8px;font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* cards & pages */
.wrap{max-width:1200px;margin:0 auto;padding:14px}
.card{background:var(--card);border-radius:10px;box-shadow:var(--shadow);padding:16px;margin-bottom:12px}
.card h3{margin:0 0 12px;font-size:16px;font-weight:600}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.cols2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{display:flex;flex-direction:column;gap:4px;min-width:120px;flex:1}
.field label{font-size:12px;color:var(--muted)}
input[type=text],input[type=number],input[type=password],input[type=date],input[type=time],select,textarea{
  background:var(--card);border:1px solid var(--line);border-radius:6px;padding:9px 10px;width:100%;outline:none}
input:focus,select:focus,textarea:focus{border-color:var(--accent)}
textarea{min-height:90px;resize:vertical;font-family:ui-monospace,Consolas,monospace;font-size:13px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;margin-bottom:12px}
.stat{background:var(--card);border-radius:10px;box-shadow:var(--shadow);padding:12px 14px}
.stat .v{font-size:22px;font-weight:600;margin-top:2px}
.stat .k{font-size:12px;color:var(--muted)}
.pos{color:var(--ok)}.neg{color:var(--bad)}
.chartbox{position:relative;height:300px}
.note{color:var(--bad);font-size:12.5px;margin-top:10px}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:7px 8px;border-bottom:1px solid var(--line)}
th{font-weight:600;color:var(--muted);font-size:12px;cursor:pointer}
.tblwrap{max-height:420px;overflow:auto}
.switch{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line)}
.switch input{width:20px;height:20px;accent-color:var(--accent)}

/* alerts */
.al{display:flex;gap:10px;padding:10px 4px;border-bottom:1px solid var(--line);align-items:flex-start}
.al .ic{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;color:#fff;flex:none;font-size:14px}
.al.unseen{background:var(--accent-soft);border-radius:6px}
.k-tamper .ic,.k-offline .ic{background:var(--bad)}
.k-recording .ic,.k-streaming .ic{background:var(--violet)}
.k-download .ic,.k-disk .ic{background:var(--warn)}
.k-blocked_app .ic{background:#c2185b}
.k-info .ic{background:var(--accent)}

/* modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:50;display:flex;align-items:center;justify-content:center;padding:10px}
.modal .box{background:var(--card);border-radius:12px;max-width:520px;width:100%;max-height:92vh;overflow:auto;padding:18px;box-shadow:0 10px 40px rgba(0,0,0,.35)}
.modal .box.wide{max-width:1150px}
.modal h3{margin:0 0 12px}
.modal .foot{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:10px;overflow-x:auto}
.tabs button{background:none;border:0;padding:9px 14px;cursor:pointer;border-bottom:3px solid transparent;color:var(--muted);white-space:nowrap}
.tabs button.on{color:var(--accent);border-color:var(--accent);font-weight:600}
.live{position:relative;background:#000;border-radius:8px;overflow:hidden;text-align:center}
.live img{max-width:100%;max-height:68vh;display:block;margin:auto;user-select:none;-webkit-user-drag:none}
.live.ctrl img{cursor:crosshair;outline:3px solid var(--warn)}
.keys{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.toast{position:fixed;bottom:18px;left:50%;transform:translateX(-50%);background:#323232;color:#fff;padding:10px 18px;
  border-radius:8px;z-index:60;box-shadow:0 4px 14px rgba(0,0,0,.3);max-width:90vw}
.msgprev{border-radius:10px;padding:16px;color:#fff;text-align:center;font-size:16px}
.msgprev big{font-size:1.5em}

/* login */
.login{min-height:100vh;display:grid;place-items:center;background:linear-gradient(160deg,var(--bar),var(--bar2))}
.login .box{background:var(--card);padding:28px;border-radius:14px;width:min(360px,92vw);box-shadow:0 10px 40px rgba(0,0,0,.3)}
.login h1{margin:0 0 4px;color:var(--accent);font-size:26px}
.login .field{margin-top:12px}
.err{color:var(--bad);font-size:13px;min-height:18px;margin-top:8px}

/* drawer */
.drawer{position:fixed;inset:0;z-index:40;background:rgba(0,0,0,.4)}
.drawer .in{width:300px;max-width:85vw;height:100%;background:var(--card)}
.drawer .hd{background:var(--bar);color:#fff;padding:22px 16px 40px}
.drawer .hd b{font-size:22px;font-weight:500;display:block}
.drawer a{display:flex;align-items:center;gap:16px;padding:14px 18px;color:var(--text);text-decoration:none;cursor:pointer}
.drawer a:hover{background:var(--bg)}
.drawer svg{fill:var(--accent)}

@media (max-width:1300px){main.grid{--cols:3}}
@media (max-width:1000px){
  #home.on{grid-template-columns:1fr}
  aside.panel{position:fixed;left:0;right:0;bottom:0;top:auto;height:auto;max-height:62vh;z-index:30;
    border-top:1px solid var(--line);border-right:0;transform:translateY(calc(100% - 52px));transition:transform .2s;
    background:var(--card);box-shadow:0 -4px 16px rgba(0,0,0,.2);padding-top:0;border-radius:14px 14px 0 0}
  aside.panel.open{transform:none}
  aside .grab{display:flex!important}
  main.grid{--cols:2;padding-bottom:70px}
  .cols2{grid-template-columns:1fr}
  header nav button{padding:8px 10px}
  header .brand{font-size:18px}
}
@media (max-width:600px){
  main.grid{--cols:2;gap:6px;padding:6px 6px 70px}
  header .brand{display:none}
  .tools .opt{display:none}
  .pc .st{grid-template-columns:1fr;grid-template-rows:none;grid-auto-flow:row;font-size:11.5px}
  .pc .h .name{font-size:13px}
}
aside .grab{display:none;position:sticky;top:0;background:var(--card);padding:14px 4px 10px;align-items:center;gap:8px;font-weight:600;cursor:pointer;z-index:2}
aside .grab::before{content:"";position:absolute;top:5px;left:50%;width:40px;height:4px;border-radius:2px;background:var(--line);transform:translateX(-50%)}