:root{
  --bg:#070a11; --bg2:#0b1019; --card:#0e1422; --card2:#121a2b;
  --line:#1d2740; --txt:#e7ecf6; --muted:#8a98b5; --accent:#00e0c6;
  --accent2:#3b82f6; --live:#16d984; --off:#f0556b; --warn:#f3b14b;
  --shadow:0 10px 40px rgba(0,0,0,.45);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--txt);
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
.bg-grid{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(0,224,198,.10), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(59,130,246,.12), transparent 55%),
    linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px) 0 0/40px 40px,
    linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px) 0 0/40px 40px;
}
.hidden{display:none!important}

/* ---- topbar ---- */
.topbar{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:24px;
  padding:14px 26px;background:rgba(8,11,18,.78);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:14px;min-width:240px}
.brand-mark{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,#0f1b2e,#0a1320);border:1px solid var(--line);
  box-shadow:inset 0 0 18px rgba(0,224,198,.12);
}
.brand-mark span{
  width:20px;height:20px;border-radius:50%;border:3px solid var(--accent);position:relative;
  box-shadow:0 0 14px rgba(0,224,198,.7);
}
.brand-mark span::after{content:"";position:absolute;inset:4px;border-radius:50%;background:var(--accent)}
.brand-text h1{font-size:18px;font-weight:800;letter-spacing:.3px;line-height:1}
.brand-text h1 em{color:var(--accent);font-style:normal;font-weight:700}
.brand-text p{font-size:11.5px;color:var(--muted);margin-top:3px;letter-spacing:.4px}
.stats{display:flex;gap:10px;margin-left:auto}
.stat{
  display:flex;align-items:center;gap:7px;background:var(--card);border:1px solid var(--line);
  padding:8px 14px;border-radius:12px;
}
.stat b{font-size:17px;font-weight:800}
.stat small{font-size:11px;color:var(--muted)}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block}
.dot.live{background:var(--live);box-shadow:0 0 10px var(--live);animation:pulse 1.8s infinite}
.dot.off{background:var(--off)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.actions{display:flex;align-items:center;gap:10px}
.btn{
  background:var(--card);color:var(--txt);border:1px solid var(--line);border-radius:11px;
  padding:9px 15px;font-size:13px;font-weight:600;cursor:pointer;font-family:inherit;
  transition:.15s;
}
.btn:hover{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 1px rgba(0,224,198,.2)}
.select{padding:9px 8px}
.clock{font-variant-numeric:tabular-nums;color:var(--muted);font-size:13px;min-width:74px;text-align:center}

/* ---- grid ---- */
.grid{
  position:relative;z-index:1;display:grid;gap:16px;padding:20px 26px 40px;
  grid-template-columns:repeat(auto-fill,minmax(340px,1fr));
}
.grid.cols-1{grid-template-columns:1fr}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-4{grid-template-columns:repeat(4,1fr)}

/* ---- card ---- */
.cam-card{
  background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--line);
  border-radius:18px;overflow:hidden;box-shadow:var(--shadow);transition:.2s;
}
.cam-card:hover{border-color:rgba(0,224,198,.4);transform:translateY(-2px)}
.cam-video-wrap{position:relative;aspect-ratio:16/9;background:#05080e;overflow:hidden}
.cam-video{width:100%;height:100%;object-fit:cover;display:block;background:#05080e}
.cam-badge{
  position:absolute;top:10px;left:10px;display:flex;align-items:center;gap:6px;
  background:rgba(5,8,14,.7);border:1px solid var(--line);padding:4px 9px;border-radius:8px;
  font-size:11px;font-weight:700;letter-spacing:.5px;backdrop-filter:blur(6px);
}
.cam-badge .dot{background:var(--live);box-shadow:0 0 8px var(--live)}
.cam-card.offline .cam-badge .dot{background:var(--off);box-shadow:none;animation:none}
.cam-card.offline .badge-text{color:var(--off)}
.cam-overlay{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;background:rgba(5,8,14,.55);color:var(--muted);font-size:13px;backdrop-filter:blur(2px);
  transition:.3s;
}
.cam-overlay.gone{opacity:0;pointer-events:none}
.spinner{width:34px;height:34px;border:3px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.cam-overlay.error .spinner{display:none}
.cam-overlay.error{color:var(--off)}

/* controls */
.cam-controls{
  position:absolute;inset:0;display:flex;align-items:flex-end;justify-content:space-between;
  padding:14px;opacity:0;transition:.2s;pointer-events:none;
  background:linear-gradient(to top,rgba(5,8,14,.75),transparent 45%);
}
.cam-video-wrap:hover .cam-controls{opacity:1;pointer-events:auto}
.ptz-pad{
  display:grid;grid-template-columns:repeat(3,30px);grid-template-rows:repeat(3,30px);gap:4px;
}
.ptz-pad.big{grid-template-columns:repeat(3,56px);grid-template-rows:repeat(3,56px);gap:7px;position:absolute;bottom:30px;right:30px}
.ptz-btn{
  background:rgba(14,20,34,.85);border:1px solid var(--line);border-radius:8px;color:var(--txt);
  font-size:15px;cursor:pointer;display:grid;place-items:center;transition:.12s;user-select:none;
}
.ptz-btn:hover{background:var(--accent);color:#04201c;border-color:var(--accent)}
.ptz-btn:active{transform:scale(.9)}
.ptz-btn.center{background:transparent;border-color:transparent;cursor:default}
.ptz-btn.center:hover{background:transparent}
.cam-tools{display:flex;flex-direction:column;gap:6px}
.tool{
  width:34px;height:34px;border-radius:9px;background:rgba(14,20,34,.85);border:1px solid var(--line);
  color:var(--txt);font-size:15px;cursor:pointer;transition:.12s;display:grid;place-items:center;
}
.tool:hover{background:var(--accent2);border-color:var(--accent2)}
.cam-foot{display:flex;align-items:center;justify-content:space-between;padding:11px 15px}
.cam-name{font-size:13.5px;font-weight:600}
.cam-id{font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums}
.cam-card.offline .cam-video{filter:grayscale(1) brightness(.4)}

/* empty */
.empty{position:relative;z-index:1;display:grid;place-items:center;min-height:70vh;padding:30px}
.empty-card{
  max-width:520px;text-align:center;background:var(--card);border:1px solid var(--line);
  border-radius:20px;padding:42px 36px;box-shadow:var(--shadow);
}
.empty-icon{font-size:54px;margin-bottom:14px}
.empty-card h2{font-size:20px;margin-bottom:10px}
.empty-card p{color:var(--muted);font-size:14px;line-height:1.6;margin-bottom:18px}
.empty-card code{display:block;background:#05080e;border:1px solid var(--line);border-radius:10px;padding:14px;font-size:12.5px;color:var(--accent);white-space:pre-wrap;text-align:left}

/* viewer */
.viewer{position:fixed;inset:0;z-index:50;background:rgba(3,5,9,.94);backdrop-filter:blur(8px);display:grid;place-items:center}
.viewer-inner{position:relative;width:min(94vw,1500px);aspect-ratio:16/9;background:#05080e;border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.viewer-inner video{width:100%;height:100%;object-fit:contain;background:#05080e}
.viewer-close{position:absolute;top:16px;right:16px;width:42px;height:42px;border-radius:11px;background:rgba(14,20,34,.85);border:1px solid var(--line);color:#fff;font-size:18px;cursor:pointer}
.viewer-close:hover{background:var(--off);border-color:var(--off)}
.viewer-name{position:absolute;top:18px;left:20px;font-size:16px;font-weight:700;background:rgba(5,8,14,.6);padding:7px 14px;border-radius:10px}

@media(max-width:680px){
  .topbar{flex-wrap:wrap;gap:12px;padding:12px 16px}
  .brand{min-width:0}
  .stats{order:3;width:100%;margin-left:0}
  .grid{grid-template-columns:1fr;padding:14px}
  .clock{display:none}
}