:root{--bg: #0f172a;--panel: #1e293b;--panel-2: #334155;--text: #e2e8f0;--muted: #94a3b8;--accent: #3b82f6;--warn: #dc2626;--ok: #16a34a;--border: #334155}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.app{display:flex;height:100vh}.sidebar{width:220px;background:var(--panel);border-right:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column;gap:10px}.brand{font-weight:700;font-size:1.2rem;margin-bottom:12px}.sidebar nav{display:flex;flex-direction:column;gap:4px}.nav-section{margin-top:14px;padding:4px 12px;font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.device-picker{display:flex;flex-direction:column;gap:4px;padding:8px 0;border-bottom:1px solid var(--border);margin-bottom:8px}.device-picker label{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.device-picker select{background:var(--bg);border:1px solid var(--border);color:var(--text);padding:6px 8px;border-radius:6px;font-size:.85rem}.user-info{margin-top:auto;padding:8px 0;border-top:1px solid var(--border);font-size:.85rem}.nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:6px;text-decoration:none;color:var(--text)}.nav-link:hover{background:var(--panel-2)}.nav-link.active{background:var(--accent);color:#fff}.nav-icon{width:18px;height:18px;flex-shrink:0;color:var(--muted)}.nav-link:hover .nav-icon{color:var(--text)}.nav-link.active .nav-icon{color:#fff}.logout{margin-top:auto;background:transparent;color:var(--muted);border:1px solid var(--border);padding:8px;border-radius:6px;cursor:pointer}.logout:hover{color:var(--text)}.main{flex:1;overflow:auto;padding:0 32px 24px}.page{max-width:1200px}.page-head{display:flex;justify-content:space-between;align-items:center;gap:16px;position:sticky;top:0;z-index:10;background:var(--bg);margin:0 -32px 20px;padding:18px 32px;border-bottom:1px solid var(--border)}.page-title{display:flex;align-items:center;gap:10px}.head-controls{display:inline-flex;align-items:center;gap:8px}.page-title-icon{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;color:var(--accent);background:#3b82f61f;border-radius:8px;padding:4px}.page-title-icon svg{width:18px;height:18px}h2,h3{margin:0}h3{font-size:1rem;margin-bottom:12px}.range-selector{display:inline-flex;background:var(--panel);border:1px solid var(--border);border-radius:8px;overflow:hidden}.range-btn{background:transparent;color:var(--text);border:none;padding:8px 14px;cursor:pointer;font-size:.9rem}.range-btn:hover{background:var(--panel-2)}.range-btn.active{background:var(--accent);color:#fff}.auto-refresh{display:inline-flex;align-items:center;gap:4px;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:0 4px 0 8px;height:34px;color:var(--muted)}.auto-refresh svg{width:14px;height:14px}.auto-refresh select{background:transparent;color:var(--text);border:none;outline:none;padding:0 4px;font-size:.85rem;cursor:pointer;height:100%}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:18px;margin-bottom:18px}.chart-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:18px}.chart-grid .card{margin-bottom:0}@media (max-width: 960px){.chart-grid{grid-template-columns:1fr}}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:16px}.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:14px}.stat-card.highlight{border-color:var(--warn)}.stat-label{display:flex;align-items:center;gap:6px}.stat-icon{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;color:var(--muted)}.stat-icon svg{width:16px;height:16px}.stat-card.caution .stat-icon{color:#f59e0b}.stat-card.danger .stat-icon{color:var(--warn)}.stat-card.caution{border-color:#f59e0b;background:linear-gradient(0deg,#f59e0b14,#f59e0b14),var(--panel)}.stat-card.danger{border-color:var(--warn);background:linear-gradient(0deg,#dc26261f,#dc26261f),var(--panel)}.stat-card.caution .stat-value{color:#fbbf24}.stat-card.danger .stat-value{color:#fca5a5}.stat-label{color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}.stat-value{font-size:1.6rem;font-weight:600;margin-top:4px}.stat-unit{font-size:.9rem;color:var(--muted);margin-left:4px}.stat-sub{font-size:.8rem;color:var(--muted);margin-top:4px}.data-table{width:100%;border-collapse:collapse;font-size:.9rem}.data-table th,.data-table td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--border)}.data-table th{color:var(--muted);font-weight:500}.row-warn{background:#dc26261f}.data-table.selectable tbody tr:hover{background:#3b82f614}.data-table tr.row-selected{background:#3b82f62e}.data-table tr.row-selected td:first-child{box-shadow:inset 3px 0 0 var(--accent)}.muted{color:var(--muted);font-size:.85rem}.error{background:#dc262626;color:#fca5a5;padding:10px 14px;border-radius:8px;margin-bottom:12px}.success{background:#16a34a26;color:#86efac;padding:10px 14px;border-radius:8px;margin-bottom:12px}.row-between{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.pill{display:inline-block;background:var(--panel-2);color:var(--muted);padding:2px 8px;border-radius:999px;font-size:.75rem;margin-left:8px}.search{background:var(--bg);border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:6px;min-width:200px}.link-btn{background:transparent;color:var(--accent);border:none;cursor:pointer;padding:0;font-size:.85rem}.link-btn.danger{color:#f87171}.link-btn:hover{text-decoration:underline}.checkbox{display:inline-flex;align-items:center;gap:6px;color:var(--muted)}.login-wrap{min-height:100vh;display:grid;place-items:center}.login-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:28px 32px;width:320px;display:flex;flex-direction:column;gap:14px}.login-card h1{margin:0 0 6px;font-size:1.3rem}.login-card label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--muted)}.login-card input{background:var(--bg);border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:6px}.login-card button{background:var(--accent);color:#fff;border:none;padding:10px;border-radius:8px;cursor:pointer;font-weight:500}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}.form-grid label{display:flex;flex-direction:column;gap:4px;font-size:.9rem}.form-grid input[type=number],.form-grid input[type=text]{background:var(--bg);border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:6px}.form-grid button{background:var(--accent);color:#fff;border:none;padding:8px 14px;border-radius:6px;cursor:pointer}.form-inline{display:flex;gap:10px;margin-top:12px}.form-inline input{background:var(--bg);border:1px solid var(--border);color:var(--text);padding:6px 10px;border-radius:6px}.form-inline button{background:var(--accent);color:#fff;border:none;padding:6px 12px;border-radius:6px;cursor:pointer}.switch input{margin-right:6px}.floorplan-wrap{position:relative;width:100%;margin-top:12px;background:var(--bg);border:1px solid var(--border);border-radius:8px;overflow:hidden;-webkit-user-select:none;user-select:none}.floorplan-wrap img{display:block;width:100%;height:auto;-webkit-user-drag:none}.floorplan-overlay{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none}.beacon-pin-wrap{position:absolute;transform:translate(-50%,-50%);pointer-events:none;display:flex;flex-direction:column;align-items:center;gap:4px}.beacon-pin{width:14px;height:14px;border-radius:50%;background:#f8fafc;border:2px solid #1e293b;box-shadow:0 0 0 2px #fff6}.beacon-pin-wrap.stale .beacon-pin{background:#94a3b8}.beacon-tag{background:#0f172aeb;border:1px solid var(--border);border-radius:6px;padding:4px 8px;font-size:.75rem;line-height:1.3;color:var(--text);text-align:center;white-space:nowrap;min-width:80px}.beacon-name{font-weight:600}.beacon-readings{color:var(--text)}.beacon-count{color:var(--muted);font-size:.7rem}.beacon-pin-wrap.stale .beacon-readings,.beacon-pin-wrap.stale .beacon-count{color:var(--muted)}