/* Node Cards Grid */
        .node-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            width: 100%;
        }

        .node-card {
            padding: 20px;
            height: 100%;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            width: 100%; 
            max-width: 100%; 
            box-sizing: border-box;
        }

        /* Pattern overlay for cards */
        .node-card:before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(circle at 50% 0%, rgba(255,255,255,0.05) 5%, transparent 70%);
            pointer-events: none;
        }

        .node-card h2 {
            font-size: 1.5rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 15px;
            text-align: center;
            position: relative;
        }

        .server-count {
            background: rgba(0, 0, 0, 0.3);
            border-radius: 20px;
            padding: 5px 15px;
            font-size: 0.9rem;
            margin-bottom: 15px;
            display: inline-block;
            color: var(--text);
        }

        /* Resource usage */
        .usage-container {
            display: flex;
            flex-direction: column;
            gap: 20px;
            margin-top: 15px;
        }

        .usage-item {
            width: 100%;
        }

        .usage-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .usage-header strong {
            color: var(--text);
        }

        .gauge-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 15px;
        }

        .gauge-container {
            width: 80px;
            height: 80px;
            position: relative;
        }

        .gauge {
            width: 100%;
            height: 100%;
        }

        .gauge-track {
            fill: none;
            stroke: rgba(255, 255, 255, 0.1);
            stroke-width: 8;
            stroke-linecap: round;
        }

        .gauge-fill {
            fill: none;
            stroke-width: 8;
            stroke-linecap: round;
            transform-origin: center;
            transform: rotate(-90deg);
            transition: stroke-dasharray 0.5s ease-in-out;
        }

        .memory-fill {
            stroke: #5cb85c;
        }

        .memory-fill.warning {
            stroke: #f0ad4e;
        }

        .memory-fill.danger {
            stroke: #d9534f;
        }

        .disk-fill {
            stroke: #5bc0de;
        }

        .disk-fill.warning {
            stroke: #f0ad4e;
        }

        .disk-fill.danger {
            stroke: #d9534f;
        }

        .gauge-value {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 1.2rem;
            font-weight: 600;
            color: white;
        }

        .gauge-unit {
            font-size: 0.7rem;
            color: var(--text-secondary);
        }

        .progress-bar {
            flex: 1;
            height: 10px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            overflow: hidden;
            position: relative;
        }

        .progress-fill {
            height: 100%;
            border-radius: 5px;
            transition: width 0.5s ease;
        }

        .memory-bar {
            background: linear-gradient(to right, #5cb85c, #82e082);
        }

        .memory-bar.warning {
            background: linear-gradient(to right, #f0ad4e, #ffce8d);
        }

        .memory-bar.danger {
            background: linear-gradient(to right, #d9534f, #ff8a87);
        }

        .disk-bar {
            background: linear-gradient(to right, #5bc0de, #8ad4ea);
        }

        .disk-bar.warning {
            background: linear-gradient(to right, #f0ad4e, #ffce8d);
        }

        .disk-bar.danger {
            background: linear-gradient(to right, #d9534f, #ff8a87);
        }

        /* Live Resource Tracker */
        .resource-tracker {
            margin-top: 30px;
            padding: 25px;
        }

        .resource-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 25px;
        }

        .resource-header h2 {
            font-size: 1.8rem;
            font-weight: 600;
            background: linear-gradient(to right, var(--warning), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .refresh-btn {
            background: rgba(229, 30, 229, 0.2);
            border: 1px solid rgba(149, 30, 229, 0.3);
            color: var(--primary);
            padding: 8px 15px;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .refresh-btn:hover {
            background: rgba(30, 136, 229, 0.3);
            border: 1px solid rgba(30, 136, 229, 0.5);
        }

        .tracker-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 20px;
        }

        .tracker-card {
            padding: 20px;
            background: rgba(0, 0, 0, 0.2);
            border-radius: 12px;
            display: flex;
            flex-direction: column;
        }

        .tracker-title {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 10px;
        }

        .tracker-value {
            font-size: 1.8rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }

        .tracker-chart {
            flex: 1;
            min-height: 120px;
            margin: 10px 0;
            position: relative;
        }

        .tracker-footer {
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-secondary);
            padding-top: 15px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .trend-positive {
            color: #5cb85c;
        }

        .trend-negative {
            color: #d9534f;
        }

        .load-chart {
            width: 100%;
            height: 300px;
            margin-top: 20px;
            border-radius: 12px;
            padding: 20px;
            background: rgba(0, 0, 0, 0.2);
        }

        .chart-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 20px;
        }

        .chart-title {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--text);
        }

        .chart-actions {
            display: flex;
            gap: 10px;
        }

        .chart-btn {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 5px 12px;
            border-radius: 6px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .chart-btn.active {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        .chart-btn:hover:not(.active) {
            background: rgba(255, 255, 255, 0.1);
        }

        /* Toggle Button for mobile */
        .toggle-sidebar {
            display: none;
            position: fixed;
            left: 20px;
            top: 20px;
            z-index: 1001;
            background: var(--primary);
            border: none;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        }

        @media (min-width: 992px) {
            .node-grid, .tracker-grid {
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            }
        }

        @media (max-width: 992px) {
            .node-grid, .tracker-grid {
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            
            .main-content {
                margin-left: 0;
            }
            
            .sidebar.active {
                transform: translateX(0);
            }
            
            .toggle-sidebar {
                display: block;
            }
            
            .node-grid, .tracker-grid {
                grid-template-columns: 1fr;
            }
        }