Update file paths to use admin directory for JS and CSS files

admin/css/admin-styles.css

@@ -0,0 +1,38 @@
+.prc-notice {
+    border-left: 4px solid #ffba00;
+    background-color: #fff8e5;
+    padding: 10px 12px;
+    margin: 5px 0 15px;
+    font-size: 14px;
+    position: relative;
+    width: 100%;
+    box-sizing: border-box;
+    max-width: none;
+}
+.prc-notice h3 {
+    margin-top: 0;
+    color: #826200;
+}
+.prc-notice::before {
+    content: "";
+    position: absolute;
+    top: -10px;
+    left: 20px;
+    width: 0;
+    height: 0;
+    border-left: 10px solid transparent;
+    border-right: 10px solid transparent;
+    border-bottom: 10px solid #fff8e5;
+}
+
+/* Style for highlighting the missing plugin row */
+tr.inactive.prc-highlight-missing,
+tr.active.prc-highlight-missing {
+    background-color: #fff8e5 !important; /* Use !important to override default styles */
+}
+
+/* Make File Missing text bold and red */
+span.error {
+    font-weight: bold !important;
+    color: #dc3232 !important;
+}

admin/css/update-source-selector.css

@@ -0,0 +1,99 @@
+/**
+ * Update Source Selector Styles
+ */
+#fpden-update-source-modal {
+    display: none;
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
+}
+
+#fpden-update-source-modal h2 {
+    margin-top: 0;
+    margin-bottom: 15px;
+    font-size: 1.3em;
+    font-weight: 600;
+}
+
+#fpden-update-source-modal p {
+    margin-bottom: 20px;
+}
+
+#fpden-update-source-form label {
+    display: block;
+    margin-bottom: 10px;
+    padding: 8px;
+    border-radius: 4px;
+    cursor: pointer;
+}
+
+#fpden-update-source-form label:hover {
+    background-color: #f0f0f1;
+}
+
+#fpden-update-source-form input[type="radio"] {
+    margin-right: 8px;
+}
+
+.fpden-source-description {
+    display: block;
+    margin-left: 24px;
+    font-size: 0.9em;
+    color: #666;
+    margin-top: 3px;
+}
+
+.fpden-submit-container {
+    margin-top: 20px;
+    text-align: right;
+}
+
+.fpden-submit-container button {
+    margin-left: 10px;
+}
+
+/* Remove explicit color to inherit from theme */
+.fpden-update-source-toggle {
+    /* color is now inherited from theme */
+}
+
+.fpden-update-source-toggle:hover {
+    /* hover color is now inherited from theme */
+}
+
+/* Close button styles */
+.fpden-close-modal {
+    position: absolute;
+    top: 10px;
+    right: 10px;
+    cursor: pointer;
+    font-size: 40px; /* Large size */
+    color: #666;
+    line-height: 30px;
+    text-decoration: none !important;
+}
+
+/* Source badges */
+.fpden-source-badge {
+    display: inline-block;
+    padding: 2px 6px;
+    border-radius: 3px;
+    font-size: 0.8em;
+    margin-left: 5px;
+    color: white;
+    font-weight: normal;
+}
+
+.fpden-source-badge.wordpress, .fpden-source-badge.wordpress\.org {
+    background-color: #0073aa;
+}
+
+.fpden-source-badge.github {
+    background-color: #24292e;
+}
+
+.fpden-source-badge.gitea {
+    background-color: #609926;
+}
+
+.fpden-source-badge.auto {
+    background-color: #666;
+}