:root{--bg-primary:#0f1117;--bg-secondary:#1a1d29;--bg-card:#1e2130;--bg-card-hover:#252838;--border:#2a2d3a;--border-light:#353849;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#64748b;--accent:#3b82f6;--accent-hover:#2563eb;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--info:#6366f1;--sidebar-width:260px;--header-height:64px;--radius-sm:6px;--radius-md:10px;--radius-lg:14px;--shadow:0 4px 20px #0000004d;--shadow-sm:0 2px 8px #0003;--font:"Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", 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span:first-child{font-size:28px;font-weight:700}.reading-big-unit{color:var(--text-muted);font-size:14px}.tier-summary{grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px;display:grid}.tier-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);border-left:4px solid;padding:16px 20px}.tier-card h4{margin-bottom:4px;font-size:16px;font-weight:700}.tier-desc{color:var(--text-muted);font-size:13px}.tier-count{color:var(--text-secondary);margin-top:6px;font-size:12px;display:block}.customers-grid{grid-template-columns:repeat(auto-fill,minmax(440px,1fr));gap:16px;display:grid}.customer-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;transition:border-color 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span{align-items:center;gap:4px;display:flex}.customer-stats{background:var(--bg-primary);border-radius:var(--radius-sm);flex-wrap:wrap;gap:16px;margin-bottom:16px;padding:12px;display:flex}.stat{flex-direction:column;flex:1;align-items:center;min-width:60px;display:flex}.stat-value{color:var(--text-primary);font-size:18px;font-weight:700}.stat-value.online,.stat-value.savings{color:var(--success)}.stat-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.3px;font-size:11px}.customer-devices h4{color:var(--text-secondary);margin-bottom:10px;font-size:13px;font-weight:600}.device-breakdown{flex-direction:column;gap:8px;display:flex}.breakdown-item{flex-direction:column;gap:4px;display:flex}.breakdown-category{text-transform:uppercase;letter-spacing:.5px;font-size:11px;font-weight:700}.breakdown-devices{flex-wrap:wrap;gap:4px;display:flex}.mini-device{background:var(--bg-primary);color:var(--text-secondary);border-radius:6px;align-items:center;gap:4px;padding:2px 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svg{flex-shrink:0;margin-top:2px}.insight-detail-footer{flex-wrap:wrap;gap:8px;display:flex}.saving-tag{color:var(--success);background:#10b9811a;border-radius:8px;align-items:center;gap:4px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-flex}.ref-tag{color:var(--text-muted);background:var(--bg-primary);border-radius:8px;padding:3px 10px;font-size:11px}.report-actions{gap:8px;display:flex}.report-summary{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin-bottom:24px;display:grid}.report-kpi{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);text-align:center;padding:16px}.report-kpi.warning{border-color:var(--danger)}.rk-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px;font-size:11px;display:block}.rk-value{color:var(--text-primary);font-size:24px;font-weight:700}.reports-page .chart-card{margin-bottom:16px}@media (width<=1200px){.charts-row{grid-template-columns:1fr}.bottom-row{grid-template-columns:1fr 1fr}.customers-grid{grid-template-columns:1fr}.monitoring-layout{grid-template-columns:220px 1fr}}@media (width<=900px){.sidebar{display:none}.main-area{margin-left:0}.bottom-row,.tier-summary,.monitoring-layout{grid-template-columns:1fr}.monitor-sidebar{max-height:none;position:static}.insights-detail-grid{grid-template-columns:1fr}.report-summary{grid-template-columns:repeat(3,1fr)}}