:root{--bg-primary: #0a0e17;--bg-secondary: #111827;--bg-card: #1a2235;--bg-hover: #243044;--border-color: #2d3a4f;--text-primary: #e2e8f0;--text-secondary: #94a3b8;--text-muted: #64748b;--accent-blue: #3b82f6;--accent-cyan: #06b6d4;--accent-green: #10b981;--accent-yellow: #f59e0b;--accent-orange: #f97316;--accent-red: #ef4444;--accent-purple: #8b5cf6;--severity-critical: #ef4444;--severity-high: #f97316;--severity-medium: #f59e0b;--severity-low: #10b981}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;overflow-x:hidden}.app{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--bg-secondary);border-right:1px solid var(--border-color);padding:1.5rem;display:flex;flex-direction:column;position:fixed;height:100vh;overflow-y:auto}.logo{font-size:1.5rem;font-weight:700;color:var(--accent-cyan);margin-bottom:2rem;display:flex;align-items:center;gap:.5rem}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:8px;color:var(--text-secondary);cursor:pointer;transition:all .2s;margin-bottom:.25rem}.nav-item:hover,.nav-item.active{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{color:var(--accent-cyan);border-left:3px solid var(--accent-cyan)}.main-content{flex:1;margin-left:240px;padding:2rem}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.header h1{font-size:1.75rem;font-weight:600}.header-stats{display:flex;gap:1.5rem}.stat-badge{background:var(--bg-card);border:1px solid var(--border-color);padding:.5rem 1rem;border-radius:8px;display:flex;align-items:center;gap:.5rem}.stat-badge .value{font-size:1.25rem;font-weight:600}.stat-badge .label{color:var(--text-muted);font-size:.875rem}.stat-online{color:var(--accent-green)}.stat-alerts{color:var(--accent-red)}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-bottom:2rem}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:1.5rem}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.card-title{font-size:1rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.alert-list{max-height:400px;overflow-y:auto}.alert-item{display:flex;align-items:flex-start;gap:1rem;padding:1rem;border-bottom:1px solid var(--border-color);transition:background .2s}.alert-item:last-child{border-bottom:none}.alert-item:hover{background:var(--bg-hover)}.alert-severity{width:10px;height:10px;border-radius:50%;margin-top:.35rem;flex-shrink:0}.alert-severity.critical{background:var(--severity-critical);box-shadow:0 0 8px var(--severity-critical)}.alert-severity.high{background:var(--severity-high)}.alert-severity.medium{background:var(--severity-medium)}.alert-severity.low{background:var(--severity-low)}.alert-content{flex:1}.alert-title{font-weight:500;margin-bottom:.25rem}.alert-meta{font-size:.75rem;color:var(--text-muted)}.alert-time{color:var(--text-muted);font-size:.75rem;white-space:nowrap}.device-list{display:flex;flex-direction:column;gap:.75rem}.device-item{display:flex;align-items:center;justify-content:space-between;padding:.75rem;background:var(--bg-secondary);border-radius:8px}.device-info{display:flex;align-items:center;gap:.75rem}.device-status{width:8px;height:8px;border-radius:50%}.device-status.online{background:var(--accent-green)}.device-status.offline{background:var(--text-muted)}.device-name{font-weight:500}.device-type{font-size:.75rem;color:var(--text-muted)}.zone-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}.zone-item{padding:1rem;background:var(--bg-secondary);border-radius:8px;border-left:4px solid}.zone-item.low{border-color:var(--accent-green)}.zone-item.medium{border-color:var(--accent-yellow)}.zone-item.high{border-color:var(--accent-orange)}.zone-item.critical{border-color:var(--accent-red)}.zone-name{font-weight:600;margin-bottom:.25rem}.zone-type{font-size:.75rem;color:var(--text-muted)}.zone-threat{font-size:.75rem;margin-top:.5rem;text-transform:uppercase;font-weight:600}.zone-threat.low{color:var(--accent-green)}.zone-threat.medium{color:var(--accent-yellow)}.zone-threat.high{color:var(--accent-orange)}.zone-threat.critical{color:var(--accent-red)}.charts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(400px,1fr));gap:1.5rem}.chart-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:1.5rem}.chart-title{font-size:1rem;font-weight:600;margin-bottom:1rem;color:var(--text-secondary)}.sse-status{display:flex;align-items:center;gap:.5rem;font-size:.875rem}.sse-dot{width:8px;height:8px;border-radius:50%;background:var(--accent-green);animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.loading{display:flex;align-items:center;justify-content:center;padding:2rem;color:var(--text-muted)}.error{background:#ef44441a;border:1px solid var(--accent-red);border-radius:8px;padding:1rem;color:var(--accent-red);margin:1rem 0}.live-indicator{display:inline-flex;align-items:center;gap:.5rem;background:#10b9811a;border:1px solid var(--accent-green);padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;color:var(--accent-green);margin-left:1rem}.no-data{text-align:center;padding:2rem;color:var(--text-muted)}@media (max-width: 768px){.sidebar{display:none}.main-content{margin-left:0;padding:1rem}}