add channel link on video page

css/video-page.css

@@ -1,3 +1,7 @@
+:root {
+    --primary-red: #FF0000;
+}
+
 /* Styles pour la page vidéo */
 .video-page {
     display: grid;
@@ -216,6 +220,43 @@
     line-height: 1.4;
 }
 
+.channel-avatar-link {
+    transition: transform 0.2s ease-in-out;
+    display: block;
+}
+
+.channel-avatar-link:hover {
+    transform: scale(1.05);
+}
+
+.channel-name-link {
+    text-decoration: none;
+    color: inherit;
+    position: relative;
+    display: inline-block;
+}
+
+.channel-name-link:hover .channel-name {
+    color: var(--primary-red);
+}
+
+.channel-name-link:after {
+    content: '';
+    position: absolute;
+    width: 100%;
+    height: 2px;
+    bottom: -3px;
+    left: 0;
+    background-color: var(--primary-red);
+    transform: scaleX(0);
+    transition: transform 0.3s;
+    transform-origin: bottom left;
+}
+
+.channel-name-link:hover:after {
+    transform: scaleX(1);
+}
+
 .subscribe-button {
     background-color: #0d6efd;
     color: white;