UI fixes (colors, favicon) and codebase comment cleanup

components/sections/BlogPreview.tsx

@@ -34,8 +34,6 @@ export function BlogPreview() {
           subtitle="Dzielimy się wiedzą i doświadczeniem. Zobacz nasze wpisy dotyczące klimatyzacji i pomp ciepła oraz oszczędzania energii."
           align="center"
         />
-
-        {/* Blog Posts Grid */}
         <div className="grid grid-cols-1 md:grid-cols-3 gap-8">
           {latestPosts.map((post) => (
             <article
@@ -43,7 +41,6 @@ export function BlogPreview() {
               className="group flex flex-col justify-between border border-border rounded-xl overflow-hidden hover:shadow-md transition-shadow h-full"
             >
               <div>
-                {/* Thumbnail */}
                 <div className="relative aspect-video bg-slate-50 border-b border-border">
                   <Image
                     src={post.image}
@@ -53,10 +50,7 @@ export function BlogPreview() {
                     sizes="(max-width: 768px) 100vw, 33vw"
                   />
                 </div>
-
-                {/* Content */}
                 <div className="p-6">
-                  {/* Category & Date */}
                   <div className="flex items-center gap-4 text-xs text-text-muted mb-3">
                     <span className="font-semibold uppercase tracking-wider text-accent">
                       {getCategoryLabel(post.category)}
@@ -66,20 +60,14 @@ export function BlogPreview() {
                       <span>{formatDate(post.date)}</span>
                     </span>
                   </div>
-
-                  {/* Title */}
                   <h3 className="text-lg font-bold text-primary font-heading line-clamp-2 leading-snug group-hover:text-accent transition-colors">
                     <Link href={`/blog/${post.slug}`}>{post.title}</Link>
                   </h3>
-
-                  {/* Excerpt */}
                   <p className="text-sm text-text-muted mt-3 line-clamp-2 leading-relaxed">
                     {post.excerpt}
                   </p>
                 </div>
               </div>
-
-              {/* Read More Link */}
               <div className="p-6 pt-0 mt-auto">
                 <Link
                   href={`/blog/${post.slug}`}
@@ -92,8 +80,6 @@ export function BlogPreview() {
             </article>
           ))}
         </div>
-
-        {/* Blog Catalog Button */}
         <div className="flex justify-center mt-12">
           <Link href="/blog" className="btn btn-outline btn-primary bg-white font-bold flex items-center gap-2 group">