:root{--bg: #f8fafc;--surface: #ffffff;--border: #e2e8f0;--border-light: #f1f5f9;--text: #1a202c;--text-muted: #64748b;--text-faint: #94a3b8;--accent: #2563eb;--accent-light: #dbeafe;--accent-hover: #1d4ed8;--success: #16a34a;--success-light: #dcfce7;--warning: #ea580c;--warning-light: #fff7ed;--danger: #dc2626;--danger-light: #fef2f2;--yellow: #ca8a04;--yellow-light: #fefce8;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px rgba(0, 0, 0, .05), 0 2px 4px rgba(0, 0, 0, .04);--font-body: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;--font-heading: "Syne", sans-serif;--font-mono: "JetBrains Mono", 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var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-brand{padding:20px 16px;border-bottom:1px solid var(--border)}.sidebar-brand h2{font-size:1rem;color:var(--accent);letter-spacing:-.02em}.sidebar-brand span{font-size:.7rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.08em;font-weight:600;display:block;margin-top:2px}.sidebar-nav{flex:1;padding:12px 8px;display:flex;flex-direction:column;gap:2px}.sidebar-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--text-muted);font-size:.875rem;font-weight:500;text-decoration:none;transition:all .15s ease}.sidebar-link:hover{background:var(--bg);color:var(--text);text-decoration:none}.sidebar-link.active{background:var(--accent-light);color:var(--accent);font-weight:600}.sidebar-link .icon{width:20px;text-align:center;font-size:1rem;flex-shrink:0}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border);font-size:.75rem;color:var(--text-faint)}.main-area{flex:1;margin-left:220px;display:flex;flex-direction:column;min-height:100vh}.top-bar{height:56px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:50}.top-bar-left{font-size:.875rem;color:var(--text-muted);font-weight:500}.top-bar-center{font-family:var(--font-heading);font-weight:600;font-size:.9rem;color:var(--text)}.top-bar-right{display:flex;align-items:center;gap:12px}.top-bar-user{font-size:.8rem;color:var(--text-muted);font-weight:500}.btn-logout{background:none;border:1px solid var(--border);border-radius:6px;padding:5px 12px;font-size:.75rem;color:var(--text-muted);transition:all .15s}.btn-logout:hover{border-color:var(--danger);color:var(--danger)}.main-content{flex:1;padding:24px;max-width:1200px;width:100%}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card-header{padding:16px 20px;border-bottom:1px solid var(--border-light);display:flex;align-items:center;justify-content:space-between}.card-header h3{font-size:.95rem}.card-body{padding:20px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;position:relative;overflow:hidden}.stat-card.border-accent{border-left:3px solid var(--accent)}.stat-card.border-success{border-left:3px solid var(--success)}.stat-card.border-warning{border-left:3px solid var(--warning)}.stat-card.border-danger{border-left:3px solid var(--danger)}.stat-card .stat-label{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;font-weight:600;margin-bottom:6px}.stat-card .stat-value{font-family:var(--font-heading);font-size:1.75rem;font-weight:800;color:var(--text);line-height:1.2}.stat-card 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.15s}.tab:hover{color:var(--text)}.tab.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-header h1{font-size:1.5rem;letter-spacing:-.02em}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:200;padding:16px}.modal{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-md);width:100%;max-width:520px;max-height:90vh;overflow-y:auto}.modal-header{padding:20px 24px 0;display:flex;align-items:center;justify-content:space-between}.modal-header h2{font-size:1.1rem}.modal-body{padding:20px 24px}.modal-footer{padding:0 24px 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0}}.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px}.status-dot.online{background:var(--success)}.status-dot.offline{background:var(--danger)}.text-muted{color:var(--text-muted)}.text-accent{color:var(--accent)}.text-success{color:var(--success)}.text-danger{color:var(--danger)}.text-sm{font-size:.8rem}.text-xs{font-size:.7rem}.font-mono{font-family:var(--font-mono)}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.gap-16{gap:16px}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.flex-wrap{flex-wrap:wrap}.text-center{text-align:center}.empty-state{text-align:center;padding:48px 24px;color:var(--text-muted)}.empty-state .empty-icon{font-size:2.5rem;margin-bottom:12px;opacity:.4}.empty-state p{font-size:.9rem}.error-banner{background:var(--danger-light);border:1px solid #fecaca;border-radius:var(--radius-sm);padding:12px 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