body { margin: 0; font-family: sans-serif; background: #f4f6f9; color: #333; }
nav { background: #2c3e50; color: white; padding: 15px 20px; display: flex; justify-content: space-between; align-items: center; }
.container { display: flex; padding: 20px; gap: 20px; max-width: 1200px; margin: 0 auto; }
.sidebar { width: 250px; display: flex; flex-direction: column; gap: 15px; }
.content { flex: 1; }
.stat-box { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.stat-box h3 { margin: 0 0 10px 0; font-size: 14px; color: #777; }
.number { font-size: 32px; font-weight: bold; color: #2c3e50; }
.status-badge { padding: 5px 10px; border-radius: 15px; color: white; font-size: 12px; }
.status-badge.online { background: #27ae60; }
.card { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
table { width: 100%; border-collapse: collapse; margin-top: 15px; }
th, td { text-align: left; padding: 10px; border-bottom: 1px solid #eee; }
th { background: #f8f9fa; font-size: 14px; }
.badge.success { background: #27ae60; padding: 3px 8px; border-radius: 4px; color: white; }
.btn { background: #3498db; color: white; border: none; padding: 8px 15px; border-radius: 4px; cursor: pointer; }
.btn-sm { background: #e74c3c; color: white; border: none; padding: 4px 8px; border-radius: 3px; cursor: pointer; }