Refactor giai đoạn 1: test các tính năng vừa thay đổi như tour, scene...

frontend/css/style.css

@@ -772,6 +772,32 @@ html, body {
     z-index: 1000;
 }
 
+.processing-overlay {
+    width: 100%;
+    height: 100%;
+    background: rgba(0, 0, 0, 0.7);
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    color: #fff;
+    font-size: 10px;
+    border-radius: 5px;
+    text-align: center;
+}
+
+.processing-overlay .spinner-icon {
+    font-size: 18px;
+    margin-bottom: 4px;
+    display: inline-block;
+    animation: fa-spin 2s linear infinite;
+}
+
+@keyframes fa-spin {
+    0% { transform: rotate(0deg); }
+    100% { transform: rotate(360deg); }
+}
+
 .scene-callout img {
     width: 100%;
     height: 100%;
@@ -987,6 +1013,7 @@ html, body {
     border: 1px solid rgba(255, 255, 255, 0.1);
     background-size: cover;
     background-position: center;
+    background-repeat: no-repeat;
     display: flex;
     flex-direction: column;
     justify-content: flex-end;
@@ -997,12 +1024,14 @@ html, body {
 .scene-card:hover {
     transform: translateY(-5px);
     border-color: rgba(0, 123, 255, 0.5);
+    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
 }
 
 .scene-card-overlay {
     padding: 15px;
-    background: linear-gradient(to top, rgba(0,0,0,0.95) 20%, rgba(0,0,0,0.6) 70%, transparent 100%);
+    background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.7) 60%, rgba(0,0,0,0.2) 90%, transparent 100%);
     color: #fff;
+    width: 100%;
 }
 
 .scene-card-info strong {
@@ -1010,6 +1039,7 @@ html, body {
     font-size: 16px;
     margin-bottom: 4px;
     color: #fff;
+    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
 }
 
 .scene-card-info .scene-desc {
@@ -1020,17 +1050,32 @@ html, body {
     -webkit-line-clamp: 2;
     -webkit-box-orient: vertical;
     overflow: hidden;
+    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
 }
 
 .scene-card-meta {
     display: flex;
     flex-wrap: wrap;
-    gap: 10px;
+    gap: 12px;
     font-size: 11px;
-    color: #aaa;
+    color: #eee;
     margin-bottom: 10px;
 }
 
+.scene-card-meta span {
+    display: flex;
+    align-items: center;
+    gap: 4px;
+    background: rgba(0, 0, 0, 0.3);
+    padding: 2px 6px;
+    border-radius: 4px;
+}
+
+.tour-card {
+    border: 1px solid rgba(255, 255, 255, 0.15);
+    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
+}
+
 /* --- Edit Metadata Modal (Dark Theme) --- */
 #edit-scene-metadata-modal .modal-content {
     background: rgba(30, 30, 30, 0.95);