feat: implement epub service, navigation service, and global error boundary with updated reader UI layouts

src/NexusReader.UI.Shared/Components/Organisms/ReaderFooter.razor.css

@@ -1,53 +1,102 @@
 .reader-footer {
-    position: absolute;
-    bottom: 0;
-    left: 0;
-    width: 100%;
-    height: 40px;
+    position: relative;
+    height: 50px;
     background: #F9F9F9;
-    border-top: 1px solid rgba(0, 0, 0, 0.05);
+    border-top: 1px solid rgba(0, 0, 0, 0.08);
     display: flex;
     align-items: center;
     padding: 0 1.5rem;
     z-index: 10;
+    flex-shrink: 0;
 }
 
 .footer-content {
     display: flex;
-    justify-content: space-between;
     align-items: center;
     width: 100%;
-    font-family: var(--nexus-font-sans);
+    gap: 1.5rem;
+}
+
+.navigation-controls {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    flex-shrink: 0;
+}
+
+.nav-btn {
+    background: white;
+    border: 1px solid rgba(0, 0, 0, 0.1);
+    border-radius: 6px;
+    width: 32px;
+    height: 32px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    cursor: pointer;
+    transition: all 0.2s ease;
+    color: #333;
+    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
+}
+
+.nav-btn:hover:not(:disabled) {
+    background: #f0f0f0;
+    transform: translateY(-1px);
+}
+
+.nav-btn:disabled {
+    opacity: 0.3;
+    cursor: not-allowed;
+}
+
+.chapter-info {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    font-size: 0.85rem;
+    color: #333;
+    white-space: nowrap;
+}
+
+.chapter-title {
+    font-weight: 600;
+    max-width: 180px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+.chapter-count {
+    opacity: 0.5;
     font-size: 0.75rem;
-    color: #666;
 }
 
 .progress-container {
     flex: 1;
-    height: 4px;
-    background: rgba(0, 0, 0, 0.1);
-    margin: 0 2rem;
-    border-radius: 2px;
+    height: 6px;
+    background: rgba(0, 0, 0, 0.05);
+    border-radius: 3px;
     overflow: hidden;
-    max-width: 400px;
+    margin: 0 1rem;
 }
 
 .progress-bar {
     height: 100%;
-    background: linear-gradient(90deg, #00ff99 0%, #00d4ff 100%);
-    border-radius: 2px;
+    background: #2ECC71;
+    border-radius: 3px;
+    transition: width 0.3s ease;
 }
 
-.page-info, .meta-info {
+.meta-info {
     display: flex;
-    gap: 0.5rem;
     align-items: center;
+    gap: 1rem;
+    font-size: 0.75rem;
+    color: #888;
+    flex-shrink: 0;
 }
 
-.label {
-    opacity: 0.7;
-}
-
-.value {
-    font-weight: 600;
-}
+.battery {
+    display: flex;
+    align-items: center;
+    gap: 0.3rem;
+}