:root{
  --bg:#0f1420; --panel:#161d2e; --panel-2:#1d2740; --border:#2a3552;
  --text:#e7ecf7; --muted:#8d97b3; --accent:#4f8cff; --green:#3ecf8e;
  --amber:#f5b942; --red:#ef5a5a; --gray:#6b7796;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;}
a{color:inherit}
h1,h2,h3{margin:0 0 8px 0;font-weight:600}
.muted{color:var(--muted);font-size:0.85em}

.topnav{display:flex;align-items:center;justify-content:space-between;
  padding:12px 24px;background:var(--panel);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:10;}
.brand{font-weight:700;font-size:1.1em}
.line-tag{color:var(--muted);font-weight:400;font-size:0.8em;margin-left:6px}
.navlinks a{margin-left:18px;text-decoration:none;color:var(--muted);padding:6px 2px;border-bottom:2px solid transparent}
.navlinks a.active{color:var(--text);border-color:var(--accent)}
.navlinks a.logout{color:var(--red)}

main{padding:20px 24px 60px;max-width:1400px;margin:0 auto}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px 18px}
.card.wide{grid-column:1 / -1}
@media (max-width:1000px){.grid{grid-template-columns:1fr}}

.card-head{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px}

.stat-row{grid-column:1 / -1;display:flex;justify-content:space-around;flex-wrap:wrap;gap:16px}

.hero-row{display:flex;gap:24px;align-items:stretch}
.feed-pane{flex:1.5;min-width:0}
.metrics-pane{flex:1;min-width:240px;border-left:1px solid var(--border);padding-left:24px}
@media (max-width:800px){.hero-row{flex-direction:column}.metrics-pane{border-left:none;padding-left:0;border-top:1px solid var(--border);padding-top:16px}}

.split-row{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:900px){.split-row{grid-template-columns:1fr}}

.details-card{cursor:default}
.details-card summary{cursor:pointer;font-size:1.05em;font-weight:600;list-style:none;display:flex;align-items:center;gap:8px}
.details-card summary::-webkit-details-marker{display:none}
.details-card summary::before{content:"▸";color:var(--muted);transition:transform .15s}
.details-card[open] summary::before{transform:rotate(90deg)}
.details-card table{margin-top:12px}
.stat{text-align:center;min-width:150px}
.stat-label{color:var(--muted);font-size:0.8em;text-transform:uppercase;letter-spacing:.04em}
.stat-value{font-size:1.6em;font-weight:700;margin-top:4px}
.stat-sub{color:var(--muted);font-size:0.8em;margin-top:4px}

.pill{display:inline-block;padding:2px 10px;border-radius:999px;font-size:0.75em;font-weight:600;background:var(--panel-2)}
.pill.RUNNING,.pill.NORMAL{background:rgba(62,207,142,.18);color:var(--green)}
.pill.STOPPED,.pill.ALERT{background:rgba(239,90,90,.18);color:var(--red)}
.pill.EMPTY{background:rgba(245,185,66,.18);color:var(--amber)}

.camera-wrap{position:relative;border-radius:8px;overflow:hidden;background:#000;min-height:200px;
  display:flex;align-items:center;justify-content:center}
.camera-wrap img{width:100%;display:block}
.live-fallback{position:absolute;color:var(--muted)}

.metrics-pane .metric{margin-bottom:14px}
.metric-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;font-size:0.9em}
.bar{position:relative;height:10px;background:var(--panel-2);border-radius:6px;overflow:hidden}
.bar-fill{height:100%;background:var(--accent);border-radius:6px;width:0%;transition:width .3s}
.bar-threshold{position:absolute;top:-2px;bottom:-2px;width:2px;background:var(--red);left:0%}
.metric-val{font-size:0.8em;color:var(--muted);margin-top:4px}

.table{width:100%;border-collapse:collapse;font-size:0.88em}
.table th{text-align:left;color:var(--muted);font-weight:600;padding:6px 8px;border-bottom:1px solid var(--border)}
.table td{padding:6px 8px;border-bottom:1px solid var(--border)}
.table tr:last-child td{border-bottom:none}
.badge-yes{color:var(--green)}
.badge-no{color:var(--red)}

.range-buttons button{background:var(--panel-2);border:1px solid var(--border);color:var(--muted);
  padding:4px 12px;border-radius:6px;cursor:pointer;margin-left:6px;font-size:0.85em}
.range-buttons button.active{color:var(--text);border-color:var(--accent);background:rgba(79,140,255,.15)}

.login-wrap{display:flex;justify-content:center;align-items:center;min-height:70vh}
.login-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:32px 36px;
  width:340px;display:flex;flex-direction:column;gap:12px}
.login-logo{font-size:2.4em;text-align:center}
.login-card h1{text-align:center}
.login-card label{display:flex;flex-direction:column;gap:6px;font-size:0.85em;color:var(--muted)}
.login-card input,input,select{background:var(--panel-2);border:1px solid var(--border);color:var(--text);
  padding:9px 10px;border-radius:8px;font-size:1em}
button{cursor:pointer}
.login-card button, .btn-primary{background:var(--accent);color:#fff;border:none;border-radius:8px;
  padding:10px 16px;font-weight:600;font-size:0.95em}
.btn-danger{background:transparent;border:1px solid var(--red);color:var(--red);border-radius:8px;padding:9px 14px;margin-right:8px}
.flash-error{background:rgba(239,90,90,.15);color:var(--red);padding:8px 10px;border-radius:8px;font-size:0.85em}

.tabs{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}
.tab{background:var(--panel-2);border:1px solid var(--border);color:var(--muted);padding:8px 14px;
  border-radius:8px 8px 0 0}
.tab.active{color:var(--text);border-bottom-color:var(--panel);background:var(--panel-2)}
.tab-panel{margin-top:-1px}

.canvas-wrap{position:relative;max-width:900px;min-height:220px;background:#000;border-radius:8px;overflow:hidden;
  display:flex;align-items:center;justify-content:center}
.canvas-wrap img{width:100%;display:block}
.canvas-wrap canvas{position:absolute;top:0;left:0;width:100%;height:100%;cursor:crosshair}
.no-frame{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:6px;text-align:center;padding:20px;color:var(--text);background:#000}

.toolbar{display:flex;align-items:center;gap:14px;margin-top:12px;flex-wrap:wrap}
.toolbar label{display:flex;align-items:center;gap:6px;font-size:0.85em;color:var(--muted)}
.toolbar input[type=number]{width:80px}

.form-row{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.form-row label{display:flex;flex-direction:column;gap:4px;font-size:0.85em;color:var(--muted)}

.result-box{background:var(--panel-2);border:1px solid var(--border);border-radius:8px;padding:12px 14px;margin-top:12px;font-size:0.9em}
.result-box .warn{color:var(--amber)}

.toggle{position:relative;display:inline-block;width:38px;height:20px}
.toggle input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;inset:0;background:var(--panel-2);border:1px solid var(--border);border-radius:999px;cursor:pointer;transition:.2s}
.toggle-slider:before{content:"";position:absolute;height:14px;width:14px;left:2px;top:2px;background:var(--muted);border-radius:50%;transition:.2s}
.toggle input:checked + .toggle-slider{background:rgba(62,207,142,.25);border-color:var(--green)}
.toggle input:checked + .toggle-slider:before{transform:translateX(18px);background:var(--green)}