ui: refine login and panels

backend/static/styles.css

@@ -140,10 +140,14 @@ body.dark-mode .theme-toggle .sun-icon {
 }
 
 .login-actions {
-    display: flex;
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
     gap: 12px;
     align-items: center;
-    justify-content: flex-end;
+}
+
+.login-actions button {
+    width: 100%;
 }
 
 /* Header - Keep the gradient but more professional */
@@ -747,8 +751,7 @@ textarea:focus {
     }
 
     .login-actions {
-        flex-direction: column;
-        align-items: stretch;
+        grid-template-columns: 1fr;
     }
 }
 
@@ -830,3 +833,69 @@ textarea:focus {
 .value.level-low {
     color: var(--success);
 }
+.metrics {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
+    gap: 20px;
+    margin-bottom: 30px;
+}
+
+.metric-card {
+    background: var(--bg-panel);
+    padding: 24px;
+    border-radius: 12px;
+    box-shadow: var(--shadow-md);
+    border-left: 4px solid var(--primary);
+    transition: all 0.3s ease;
+    position: relative;
+    overflow: hidden;
+}
+
+.metric-card::before {
+    content: '';
+    position: absolute;
+    top: 0;
+    right: 0;
+    width: 100px;
+    height: 100px;
+    background: var(--primary);
+    opacity: 0.05;
+    border-radius: 50%;
+    transform: translate(30%, -30%);
+}
+
+.metric-card:hover {
+    transform: translateY(-4px);
+    box-shadow: var(--shadow-lg);
+    border-left-width: 6px;
+}
+
+.metric-card .label {
+    font-size: 0.875rem;
+    color: var(--text-secondary);
+    margin-bottom: 8px;
+    text-transform: uppercase;
+    font-weight: 600;
+    letter-spacing: 0.5px;
+}
+
+.metric-card .value {
+    font-size: 2.5rem;
+    font-weight: 700;
+    color: var(--primary);
+    position: relative;
+    z-index: 1;
+}
+
+.panel-section {
+    background: var(--bg-panel);
+    border-radius: 12px;
+    padding: 24px;
+    box-shadow: var(--shadow-md);
+    border: 1px solid var(--border-main);
+    margin-bottom: 24px;
+}
+
+.panel-section h3 {
+    margin-bottom: 12px;
+}