feat: Add basic mempool info

templates/assets/css/index.css

@@ -136,6 +136,136 @@ main {
     box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
 }
 
+/* Mempool Transaction List */
+.mempool-txs-container {
+    margin-top: 1rem;
+}
+
+.mempool-header {
+    padding: 0.75rem;
+    background: rgba(255, 107, 53, 0.1);
+    border-radius: 6px;
+    margin-bottom: 0.75rem;
+    color: #ff6b35;
+}
+
+.tx-list {
+    max-height: 400px;
+    overflow-y: auto;
+}
+
+.tx-item {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0.5rem;
+    background: rgba(20, 20, 20, 0.5);
+    border: 1px solid rgba(255, 107, 53, 0.15);
+    border-radius: 6px;
+    margin-bottom: 0.5rem;
+}
+
+.tx-hash {
+    flex: 1;
+    font-size: 0.8rem;
+    color: #b0b0b0;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+.tx-view-btn {
+    padding: 0.4rem 0.8rem;
+    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
+    color: #ffffff;
+    border: none;
+    border-radius: 4px;
+    cursor: pointer;
+    font-size: 0.85rem;
+    font-weight: 600;
+    transition: all 0.3s ease;
+    flex-shrink: 0;
+}
+
+.tx-view-btn:hover {
+    transform: translateY(-1px);
+    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.4);
+}
+
+/* Transaction Modal */
+.tx-modal {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background: rgba(0, 0, 0, 0.8);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 1000;
+    padding: 1rem;
+}
+
+.tx-modal-content {
+    background: rgba(30, 30, 30, 0.95);
+    border-radius: 12px;
+    max-width: 900px;
+    width: 100%;
+    max-height: 80vh;
+    border: 1px solid rgba(255, 107, 53, 0.3);
+    display: flex;
+    flex-direction: column;
+}
+
+.tx-modal-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 1.5rem;
+    border-bottom: 1px solid rgba(255, 107, 53, 0.2);
+}
+
+.tx-modal-header h3 {
+    margin: 0;
+    color: #ff6b35;
+}
+
+.tx-modal-close {
+    background: none;
+    border: none;
+    color: #e0e0e0;
+    font-size: 2rem;
+    cursor: pointer;
+    padding: 0;
+    width: 2rem;
+    height: 2rem;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    border-radius: 4px;
+    transition: all 0.3s ease;
+}
+
+.tx-modal-close:hover {
+    background: rgba(255, 107, 53, 0.2);
+    color: #ff6b35;
+}
+
+.tx-modal-body {
+    padding: 1.5rem;
+    overflow-y: auto;
+    flex: 1;
+}
+
+.tx-modal-body pre {
+    color: #b0b0b0;
+    font-family: 'Courier New', monospace;
+    font-size: 0.9rem;
+    white-space: pre-wrap;
+    word-wrap: break-word;
+    margin: 0;
+}
+
 /* Tabs */
 .search-tabs {
     display: flex;