feat: add member details overlay to topology

public/styles.css

@@ -2383,6 +2383,201 @@ p {
     height: 100%;
 }
 
+/* Member Card Overlay Styles */
+.member-card-overlay {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background: rgba(0, 0, 0, 0.7);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 10000;
+    opacity: 0;
+    visibility: hidden;
+    transition: all 0.3s ease;
+}
+
+.member-card-overlay.visible {
+    opacity: 1;
+    visibility: visible;
+}
+
+.member-overlay-content {
+    background: linear-gradient(135deg, #1c2a38 0%, #283746 50%, #1a252f 100%);
+    border: 1px solid rgba(255, 255, 255, 0.12);
+    border-radius: 16px;
+    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
+    max-width: 800px;
+    width: 90%;
+    max-height: 90vh;
+    overflow: hidden;
+    transform: scale(0.9) translateY(20px);
+    transition: all 0.3s ease;
+}
+
+.member-card-overlay.visible .member-overlay-content {
+    transform: scale(1) translateY(0);
+}
+
+.member-overlay-header {
+    display: flex;
+    align-items: flex-start;
+    justify-content: space-between;
+    padding: 24px 24px 16px;
+    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+.member-overlay-title h3 {
+    margin: 0 0 8px 0;
+    font-size: 1.5rem;
+    font-weight: 600;
+    color: #ecf0f1;
+}
+
+.member-overlay-subtitle {
+    font-size: 1rem;
+    color: rgba(255, 255, 255, 0.7);
+    font-family: 'Courier New', monospace;
+}
+
+.member-overlay-close {
+    background: none;
+    border: none;
+    color: rgba(255, 255, 255, 0.6);
+    cursor: pointer;
+    padding: 8px;
+    border-radius: 8px;
+    transition: all 0.2s ease;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.member-overlay-close:hover {
+    background: rgba(255, 255, 255, 0.1);
+    color: rgba(255, 255, 255, 0.9);
+}
+
+.member-overlay-close svg {
+    width: 20px;
+    height: 20px;
+}
+
+.member-overlay-body {
+    padding: 24px;
+}
+
+.member-overlay-section {
+    margin-bottom: 24px;
+}
+
+/* Member card container within overlay */
+.member-overlay-body {
+    padding: 0;
+    overflow: auto;
+    max-height: calc(90vh - 120px); /* Account for header */
+}
+
+/* Ensure member cards render properly in overlay */
+.member-overlay-body .member-card {
+    margin: 0;
+    border-radius: 0;
+    border: none;
+    box-shadow: none;
+    background: transparent;
+}
+
+.member-overlay-body .member-card .member-header {
+    padding: 20px 24px 16px;
+    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+.member-overlay-body .member-card .member-details {
+    padding: 20px 24px;
+}
+
+/* Hide expand icon in overlay since card is always expanded */
+.member-overlay-body .member-card .expand-icon {
+    display: none;
+}
+
+/* Ensure expanded state is visually clear */
+.member-overlay-body .member-card.expanded .member-details {
+    display: block;
+}
+
+/* Highlight animation for member cards */
+.member-card.highlighted {
+    animation: highlight-pulse 2s ease-in-out;
+}
+
+@keyframes highlight-pulse {
+    0%, 100% {
+        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
+    }
+    50% {
+        box-shadow: 0 8px 32px rgba(59, 130, 246, 0.4), 0 4px 16px rgba(0, 0, 0, 0.3);
+    }
+}
+
+/* Responsive design for overlay */
+@media (max-width: 768px) {
+    .member-overlay-content {
+        width: 95%;
+        max-width: none;
+        margin: 20px;
+    }
+    
+    .member-overlay-header {
+        padding: 20px 20px 12px;
+    }
+    
+    .member-overlay-body {
+        padding: 20px;
+    }
+    
+    .member-overlay-actions {
+        flex-direction: column;
+    }
+    
+    .member-overlay-title h3 {
+        font-size: 1.3rem;
+    }
+}
+
+/* Test page styles */
+.test-section {
+    background: rgba(255, 255, 255, 0.05);
+    border: 1px solid rgba(255, 255, 255, 0.1);
+    border-radius: 12px;
+    padding: 24px;
+    margin: 24px 0;
+}
+
+.test-section h2 {
+    color: #ecf0f1;
+    margin-top: 0;
+}
+
+#test-overlay-btn {
+    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
+    color: white;
+    border: none;
+    padding: 12px 24px;
+    border-radius: 8px;
+    font-weight: 600;
+    cursor: pointer;
+    transition: all 0.2s ease;
+}
+
+#test-overlay-btn:hover {
+    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
+    transform: translateY(-1px);
+}
+
 /* Loading and error states */
 .loading, .error, .no-data {
     display: flex;