body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f0f2f5;
    color: #333;
}

.sidebar {
    min-height: 100vh;
    background-color: #075E54;
    padding-top: 1rem;
}

.sidebar .nav-link {
    color: rgba(255,255,255,0.8);
    padding: 0.75rem 1.25rem;
    border-radius: 0;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    color: #fff;
    background-color: rgba(255,255,255,0.1);
}

.sidebar .nav-link i {
    margin-right: 0.5rem;
    width: 20px;
    text-align: center;
}

.sidebar-brand {
    color: #fff;
    font-size: 1.2rem;
    font-weight: bold;
    padding: 0.5rem 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 1rem;
}

.stat-card {
    border: none;
    border-radius: 10px;
    transition: transform 0.2s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card .card-body {
    padding: 1.5rem;
}

.stat-card .stat-icon {
    font-size: 2rem;
    opacity: 0.7;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: bold;
}

.stat-card .stat-label {
    font-size: 0.85rem;
    opacity: 0.8;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: #555;
}

.badge-connected { background-color: #28a745; }
.badge-disconnected { background-color: #dc3545; }
.badge-connecting { background-color: #ffc107; color: #333; }

.top-bar {
    background: #fff;
    border-bottom: 1px solid #dee2e6;
    padding: 0.75rem 1.5rem;
}