* { margin: 0; padding: 0; box-sizing: border-box; }
body { 
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #0a0e27;
    color: #e4e4e7;
    line-height: 1.6;
}
.container { max-width: 1400px; margin: 0 auto; padding: 20px; }
header { text-align: center; padding: 40px 0; }
header h1 { font-size: 2.5rem; margin-bottom: 10px; }
nav { display: flex; gap: 10px; margin: 20px 0; flex-wrap: wrap; }
.nav-btn {
    background: #1e293b;
    border: 2px solid #334155;
    color: #e4e4e7;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}
.nav-btn:hover { background: #334155; }
.nav-btn.active { background: #3b82f6; border-color: #3b82f6; }
main { margin-top: 30px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.card {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 24px;
}
.card h3 { margin-bottom: 16px; color: #3b82f6; }
.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}
.status-active { background: #10b981; color: #fff; }
.status-idle { background: #f59e0b; color: #fff; }
.status-error { background: #ef4444; color: #fff; }
.loading { text-align: center; padding: 60px; font-size: 1.2rem; color: #64748b; }