Improve source-specific search queries and preview layout

backend/services/cse.go

@@ -48,31 +48,34 @@ func (s *SearchService) SearchMedia(queries []string) ([]SearchResult, error) {
 	}
 
 	sources := []struct {
-		name       string
+		name         string
-		categories string
+		categories   string
-		engine     string
+		engine       string
-		siteFilter string
+		queryBuilder func(string) string
-		match      func(string) bool
+		match        func(string) bool
 	}{
 		{
 			name:       "Google Video",
 			categories: "videos",
 			engine:     s.GoogleVideoEngine,
-			match:      func(string) bool { return true },
+			queryBuilder: func(query string) string {
+				return query
+			},
+			match: func(string) bool { return true },
 		},
 		{
-			name:       "Envato",
+			name:         "Envato",
-			categories: "general",
+			categories:   "general",
-			engine:     s.WebEngine,
+			engine:       s.WebEngine,
-			siteFilter: "site:elements.envato.com OR site:envato.com OR site:videohive.net",
+			queryBuilder: buildEnvatoQuery,
-			match:      isEnvatoURL,
+			match:        isEnvatoURL,
 		},
 		{
-			name:       "Artgrid",
+			name:         "Artgrid",
-			categories: "general",
+			categories:   "general",
-			engine:     s.WebEngine,
+			engine:       s.WebEngine,
-			siteFilter: "site:artgrid.io",
+			queryBuilder: buildArtgridQuery,
-			match:      func(link string) bool { return strings.Contains(strings.ToLower(link), "artgrid.io") },
+			match:        func(link string) bool { return strings.Contains(strings.ToLower(link), "artgrid.io") },
 		},
 	}
 
@@ -86,8 +89,8 @@ func (s *SearchService) SearchMedia(queries []string) ([]SearchResult, error) {
 		}
 		for _, source := range sources {
 			searchQuery := query
-			if source.siteFilter != "" {
+			if source.queryBuilder != nil {
-				searchQuery = query + " " + source.siteFilter
+				searchQuery = source.queryBuilder(query)
 			}
 
 			items, err := s.search(searchQuery, source.categories, source.engine, source.name)
@@ -112,6 +115,9 @@ func (s *SearchService) SearchMedia(queries []string) ([]SearchResult, error) {
 				if source.match != nil && !source.match(item.Link) {
 					continue
 				}
+				if !isRenderableLink(item.Link, item.Source) {
+					continue
+				}
 				seen[item.Link] = true
 				results = append(results, item)
 			}
@@ -224,6 +230,34 @@ func isEnvatoURL(link string) bool {
 	return strings.Contains(lower, "envato") || strings.Contains(lower, "videohive.net")
 }
 
+func isRenderableLink(link, source string) bool {
+	parsed, err := url.Parse(link)
+	if err != nil {
+		return false
+	}
+	path := strings.Trim(parsed.Path, "/")
+	if path == "" {
+		return false
+	}
+	lower := strings.ToLower(link)
+	switch source {
+	case "Envato":
+		return strings.Contains(lower, "/item/") || strings.Contains(lower, "/stock-video/") || strings.Contains(lower, "/video-templates/")
+	case "Artgrid":
+		return strings.Contains(lower, "artgrid.io") && len(strings.Split(path, "/")) >= 2
+	default:
+		return true
+	}
+}
+
+func buildEnvatoQuery(query string) string {
+	return fmt.Sprintf(`%s ("stock video" OR footage OR "video template" OR cinematic) (site:elements.envato.com/stock-video OR site:elements.envato.com/video-templates OR site:videohive.net/item)`, query)
+}
+
+func buildArtgridQuery(query string) string {
+	return fmt.Sprintf(`%s ("stock footage" OR "b-roll" OR cinematic OR editorial) (site:artgrid.io)`, query)
+}
+
 func deriveThumbnail(link string) string {
 	if videoID := extractYouTubeID(link); videoID != "" {
 		return "https://i.ytimg.com/vi/" + videoID + "/hqdefault.jpg"

backend/services/gemini.go

@@ -43,6 +43,13 @@ func (g *GeminiService) ExpandQuery(query string) ([]string, error) {
 	}
 
 	body := map[string]any{
+		"systemInstruction": map[string]any{
+			"parts": []map[string]string{
+				{
+					"text": "You are a JSON-only API. Output valid JSON only. Never add prose, labels, markdown, or explanations before or after the JSON.",
+				},
+			},
+		},
 		"contents": []map[string]any{
 			{
 				"parts": []map[string]string{
@@ -85,6 +92,13 @@ User query: ` + query,
 	jsonText, err := extractJSONObject(rawText)
 	if err != nil {
 		strictBody := map[string]any{
+			"systemInstruction": map[string]any{
+				"parts": []map[string]string{
+					{
+						"text": "You are a strict JSON emitter. Output one valid JSON object only. Do not write any other text.",
+					},
+				},
+			},
 			"contents": []map[string]any{
 				{
 					"parts": []map[string]string{

frontend/index.html

@@ -70,7 +70,7 @@
     </main>
 
     <div id="previewModal" class="fixed inset-0 z-50 hidden items-center justify-center bg-black/80 px-4">
-      <div class="w-full max-w-3xl rounded-3xl border border-white/10 bg-zinc-950 p-5 shadow-2xl">
+      <div class="w-full max-w-4xl rounded-3xl border border-white/10 bg-zinc-950 p-5 shadow-2xl">
         <div class="flex items-start justify-between gap-4">
           <div>
             <p class="text-xs uppercase tracking-[0.3em] text-zinc-500">Download Preview</p>
@@ -78,12 +78,12 @@
           </div>
           <button id="closePreviewModal" class="rounded-full border border-white/10 px-3 py-2 text-xs uppercase tracking-[0.2em] text-zinc-300">Close</button>
         </div>
-        <div class="mt-5 grid gap-5 md:grid-cols-[1.2fr_0.8fr]">
+        <div class="mt-5 grid gap-5 xl:grid-cols-[minmax(0,1.15fr)_360px]">
-          <div id="previewMediaFrame" class="flex min-h-[320px] items-center justify-center overflow-hidden rounded-3xl border border-white/10 bg-black/30 p-2">
+          <div id="previewMediaFrame" class="min-w-0 flex min-h-[320px] items-center justify-center overflow-hidden rounded-3xl border border-white/10 bg-black/30 p-2">
             <video id="previewVideo" class="hidden max-h-[60vh] w-full bg-black object-contain" controls playsinline></video>
             <img id="previewThumbnail" class="max-h-[60vh] w-full object-contain" alt="" />
           </div>
-          <div class="space-y-4">
+          <div class="min-w-0 space-y-4">
             <div class="rounded-2xl border border-white/10 bg-white/[0.03] p-4">
               <div class="flex items-center justify-between text-sm text-zinc-400">
                 <span>Detected duration</span>
@@ -136,6 +136,6 @@
       </a>
     </template>
 
-    <script src="/app.js?v=20260313b" defer></script>
+    <script src="/app.js?v=20260313c" defer></script>
   </body>
 </html>