diff --git a/apps/backoffice/app/(app)/books/[id]/page.tsx b/apps/backoffice/app/(app)/books/[id]/page.tsx
index 3721e86..2ccca37 100644
--- a/apps/backoffice/app/(app)/books/[id]/page.tsx
+++ b/apps/backoffice/app/(app)/books/[id]/page.tsx
@@ -94,13 +94,13 @@ export default async function BookDetailPage({
       <div className="flex flex-col sm:flex-row gap-6">
         {/* Cover */}
         <div className="flex-shrink-0">
-          <div className="w-48 aspect-[2/3] relative rounded-xl overflow-hidden shadow-card border border-border">
+          <div className="w-40 aspect-[2/3] relative rounded-xl overflow-hidden shadow-card border border-border">
             <Image
               src={getBookCoverUrl(book.id)}
               alt={t("bookDetail.coverOf", { title: book.title })}
               fill
               className="object-cover"
-              sizes="192px"
+              sizes="160px"
               loading="lazy"
             />
           </div>
@@ -108,36 +108,24 @@ export default async function BookDetailPage({
 
         {/* Info */}
         <div className="flex-1 space-y-4">
-          <div className="flex items-start justify-between gap-4">
-            <div>
-              <h1 className="text-3xl font-bold text-foreground">{book.title}</h1>
-              {book.author && (
-                <p className="text-base text-muted-foreground mt-1">{book.author}</p>
-              )}
-            </div>
-            <EditBookForm book={book} />
-          </div>
+          {/* Title */}
+          <h1 className="text-3xl font-bold text-foreground">{book.title}</h1>
 
-          {/* Series + Volume link */}
-          {book.series && (
-            <div className="flex items-center gap-2 text-sm">
+          {/* Author + Series + Volume + Reading status badges */}
+          <div className="flex flex-wrap items-center gap-3">
+            {book.author && (
+              <p className="text-base text-muted-foreground">{book.author}</p>
+            )}
+            {book.series && (
               <Link
                 href={`/libraries/${book.library_id}/series/${encodeURIComponent(book.series)}`}
-                className="text-primary hover:text-primary/80 transition-colors font-medium"
+                className="inline-flex items-center gap-1 px-2 py-0.5 rounded-full bg-primary/10 text-primary text-xs border border-primary/30 font-medium"
               >
                 {book.series}
+                {book.volume != null && <span className="font-semibold">Vol. {book.volume}</span>}
               </Link>
-              {book.volume != null && (
-                <span className="px-2 py-0.5 bg-primary/10 text-primary rounded-md text-xs font-semibold">
-                  Vol. {book.volume}
-                </span>
-              )}
-            </div>
-          )}
-
-          {/* Reading status + actions */}
-          <div className="flex flex-wrap items-center gap-3">
-            <span className={`inline-flex items-center px-2.5 py-1 rounded-full text-xs font-semibold ${statusClassName}`}>
+            )}
+            <span className={`inline-flex items-center px-2.5 py-0.5 rounded-full text-xs font-medium ${statusClassName}`}>
               {statusLabel}
               {book.reading_status === "reading" && book.reading_current_page != null && ` · p. ${book.reading_current_page}`}
             </span>
@@ -146,35 +134,24 @@ export default async function BookDetailPage({
                 {new Date(book.reading_last_read_at).toLocaleDateString(locale)}
               </span>
             )}
-            <MarkBookReadButton bookId={book.id} currentStatus={book.reading_status} />
-            {book.file_format === "cbr" && <ConvertButton bookId={book.id} />}
-            <DeleteBookButton bookId={book.id} libraryId={book.library_id} />
           </div>
 
-          {/* Metadata pills */}
-          <div className="flex flex-wrap items-center gap-2">
-            <span className={`inline-flex px-2.5 py-1 rounded-full text-xs font-semibold border ${formatColor}`}>
+          {/* Metadata stats */}
+          <div className="flex flex-wrap items-center gap-4 text-sm">
+            <span className={`inline-flex px-2.5 py-0.5 rounded-full text-xs font-semibold border ${formatColor}`}>
               {formatBadge}
             </span>
             {book.page_count && (
-              <span className="inline-flex px-2.5 py-1 rounded-full text-xs font-medium bg-muted/50 text-muted-foreground border border-border">
-                {book.page_count} {t("dashboard.pages").toLowerCase()}
-              </span>
+              <span className="text-muted-foreground"><span className="font-semibold text-foreground">{book.page_count}</span> {t("dashboard.pages").toLowerCase()}</span>
             )}
             {book.language && (
-              <span className="inline-flex px-2.5 py-1 rounded-full text-xs font-medium bg-muted/50 text-muted-foreground border border-border">
-                {book.language.toUpperCase()}
-              </span>
+              <span className="text-muted-foreground">{book.language.toUpperCase()}</span>
             )}
             {book.isbn && (
-              <span className="inline-flex px-2.5 py-1 rounded-full text-xs font-mono font-medium bg-muted/50 text-muted-foreground border border-border">
-                ISBN {book.isbn}
-              </span>
+              <span className="text-muted-foreground font-mono">ISBN {book.isbn}</span>
             )}
             {book.publish_date && (
-              <span className="inline-flex px-2.5 py-1 rounded-full text-xs font-medium bg-muted/50 text-muted-foreground border border-border">
-                {book.publish_date}
-              </span>
+              <span className="text-muted-foreground">{book.publish_date}</span>
             )}
           </div>
 
@@ -182,6 +159,14 @@ export default async function BookDetailPage({
           {book.summary && (
             <SafeHtml html={book.summary} className="text-sm text-muted-foreground leading-relaxed" />
           )}
+
+          {/* Action buttons toolbar */}
+          <div className="flex flex-wrap items-center gap-3">
+            <MarkBookReadButton bookId={book.id} currentStatus={book.reading_status} />
+            <EditBookForm book={book} />
+            {book.file_format === "cbr" && <ConvertButton bookId={book.id} />}
+            <DeleteBookButton bookId={book.id} libraryId={book.library_id} />
+          </div>
         </div>
       </div>
 
diff --git a/apps/backoffice/app/components/ConvertButton.tsx b/apps/backoffice/app/components/ConvertButton.tsx
index 1130274..74cb05e 100644
--- a/apps/backoffice/app/components/ConvertButton.tsx
+++ b/apps/backoffice/app/components/ConvertButton.tsx
@@ -61,13 +61,13 @@ export function ConvertButton({ bookId }: ConvertButtonProps) {
   }
 
   return (
-    <Button
-      variant="secondary"
-      size="sm"
+    <button
+      type="button"
       onClick={handleConvert}
       disabled={state.type === "loading"}
+      className="inline-flex items-center gap-1.5 px-3 py-1.5 rounded-lg border border-border bg-card text-sm font-medium text-muted-foreground hover:text-foreground hover:border-primary transition-colors disabled:opacity-50"
     >
       {state.type === "loading" ? t("convert.converting") : t("convert.convertToCbz")}
-    </Button>
+    </button>
   );
 }
diff --git a/apps/backoffice/app/components/DeleteBookButton.tsx b/apps/backoffice/app/components/DeleteBookButton.tsx
index d1dd475..5a0501b 100644
--- a/apps/backoffice/app/components/DeleteBookButton.tsx
+++ b/apps/backoffice/app/components/DeleteBookButton.tsx
@@ -26,15 +26,15 @@ export function DeleteBookButton({ bookId, libraryId }: { bookId: string; librar
 
   return (
     <>
-      <Button
-        variant="destructive"
-        size="sm"
+      <button
+        type="button"
         onClick={() => setShowConfirm(true)}
         disabled={deleting}
+        className="inline-flex items-center gap-1.5 px-3 py-1.5 rounded-lg border border-destructive/30 bg-destructive/10 text-destructive text-sm font-medium hover:bg-destructive/20 transition-colors disabled:opacity-50"
       >
         {deleting ? <Icon name="spinner" size="sm" className="animate-spin" /> : <Icon name="trash" size="sm" />}
-        <span className="ml-1.5">{t("bookDetail.delete")}</span>
-      </Button>
+        {t("bookDetail.delete")}
+      </button>
 
       <Modal isOpen={showConfirm} onClose={() => setShowConfirm(false)} maxWidth="sm">
         <div className="p-6">
diff --git a/apps/backoffice/app/components/MarkBookReadButton.tsx b/apps/backoffice/app/components/MarkBookReadButton.tsx
index 548aa0a..9df8fd1 100644
--- a/apps/backoffice/app/components/MarkBookReadButton.tsx
+++ b/apps/backoffice/app/components/MarkBookReadButton.tsx
@@ -40,11 +40,15 @@ export function MarkBookReadButton({ bookId, currentStatus }: MarkBookReadButton
   };
 
   return (
-    <Button
-      variant={isRead ? "outline" : "primary"}
-      size="sm"
+    <button
+      type="button"
       onClick={handleClick}
       disabled={loading}
+      className={`inline-flex items-center gap-1.5 px-3 py-1.5 rounded-lg border text-sm font-medium transition-colors disabled:opacity-50 ${
+        isRead
+          ? "border-border bg-card text-muted-foreground hover:text-foreground hover:border-primary"
+          : "border-green-500/30 bg-green-500/10 text-green-600 hover:bg-green-500/20"
+      }`}
     >
       {loading ? (
         <svg className="w-4 h-4 animate-spin" fill="none" viewBox="0 0 24 24">
@@ -52,15 +56,15 @@ export function MarkBookReadButton({ bookId, currentStatus }: MarkBookReadButton
           <path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4z" />
         </svg>
       ) : isRead ? (
-        <svg className="w-4 h-4 mr-1.5" fill="none" stroke="currentColor" viewBox="0 0 24 24" strokeWidth={2}>
+        <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24" strokeWidth={2}>
           <path strokeLinecap="round" strokeLinejoin="round" d="M9 15 3 9m0 0 6-6M3 9h12a6 6 0 0 1 0 12h-3" />
         </svg>
       ) : (
-        <svg className="w-4 h-4 mr-1.5" fill="none" stroke="currentColor" viewBox="0 0 24 24" strokeWidth={2}>
+        <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24" strokeWidth={2}>
           <path strokeLinecap="round" strokeLinejoin="round" d="M9 12.75 11.25 15 15 9.75M21 12a9 9 0 1 1-18 0 9 9 0 0 1 18 0z" />
         </svg>
       )}
       {!loading && label}
-    </Button>
+    </button>
   );
 }