* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
body { display: flex; height: 100vh; background-color: #0f172a; color: #f8fafc; }
.sidebar { width: 250px; background-color: #1e293b; padding: 20px; border-right: 1px solid #334155; }
.sidebar h2 { margin-bottom: 30px; font-size: 1.2rem; color: #38bdf8; }
.nav-link { display: block; padding: 10px; color: #cbd5e1; text-decoration: none; margin-bottom: 5px; border-radius: 5px; }
.nav-link:hover, .nav-link.active { background-color: #334155; color: #fff; }
.main-content { flex: 1; padding: 30px; overflow-y: auto; }
header { display: flex; justify-content: space-between; margin-bottom: 30px; border-bottom: 1px solid #334155; padding-bottom: 10px; }
.metrics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 20px; }
.card { background-color: #1e293b; padding: 20px; border-radius: 8px; border: 1px solid #334155; }
.card h3 { font-size: 0.9rem; color: #94a3b8; margin-bottom: 10px; text-transform: uppercase; }
.value { font-size: 2rem; font-weight: bold; }
.safe { color: #22c55e; }
.chart-container { height: 300px; display: flex; flex-direction: column; }
.mock-chart { flex: 1; display: flex; align-items: flex-end; gap: 4px; padding-top: 20px; }
.bar { flex: 1; background-color: #38bdf8; border-radius: 3px 3px 0 0; transition: height 0.3s ease; }
.hidden { display: none; }
.data-table { width: 100%; border-collapse: collapse; margin-top: 10px; }
.data-table th, .data-table td { padding: 12px; text-align: left; border-bottom: 1px solid #334155; }
code { background: #0f172a; padding: 10px; display: block; border-radius: 5px; color: #f472b6; margin: 10px 0; font-family: monospace; }