diff --git a/app/(dashboard)/chat/page.tsx b/app/(dashboard)/chat/page.tsx
index 7d6912d..8e9b0aa 100644
--- a/app/(dashboard)/chat/page.tsx
+++ b/app/(dashboard)/chat/page.tsx
@@ -158,7 +158,7 @@ export default function AIChatPage() {
           <MessageSquare className="h-4 w-4" />
           Sohbetler
         </h2>
-        <Button variant="outline" size="icon" className="h-8 w-8" onClick={() => {
+        <Button effect="shine" variant="secondary" size="icon-sm"  onClick={() => {
           handleNewChat();
           setIsMobileSessionsOpen(false);
         }}>
@@ -173,31 +173,31 @@ export default function AIChatPage() {
           </div>
         ) : (
           sessions.map((session) => (
-            <button
-              key={session.id}
-              type="button"
-              onClick={() => {
-                setActiveSessionId(session.id);
-                setIsMobileSessionsOpen(false);
-              }}
-              className={`group flex w-full items-center justify-between rounded-sm p-3 text-left transition-colors ${
-                activeSessionId === session.id
-                  ? "bg-primary/10 text-primary"
-                  : "text-foreground hover:bg-muted/50"
-              }`}
-            >
-              <span className="truncate pr-2 text-sm font-medium">
-                {session.title || "İsimsiz sohbet"}
-              </span>
-              <span
-                role="button"
-                tabIndex={0}
+            <div key={session.id} className="group flex items-center gap-1">
+              <Button effect="shine"
+                type="button"
+                variant={activeSessionId === session.id ? "default" : "secondary"}
+                onClick={() => {
+                  setActiveSessionId(session.id);
+                  setIsMobileSessionsOpen(false);
+                }}
+                className="min-w-0 flex-1 justify-start px-3"
+              >
+                <span className="truncate text-sm font-medium">
+                  {session.title || "İsimsiz sohbet"}
+                </span>
+              </Button>
+              <Button effect="shine"
+                type="button"
+                variant="secondary"
+                size="icon-sm"
+                aria-label={`${session.title || "İsimsiz sohbet"} sohbetini sil`}
                 onClick={(event) => void handleDeleteSession(session.id, event)}
-                className="rounded-sm p-1 opacity-0 transition-all hover:bg-rose-50 hover:text-rose-600 lg:group-hover:opacity-100"
+                className="text-destructive opacity-0 transition-opacity lg:group-hover:opacity-100"
               >
                 <Trash2 className="h-3.5 w-3.5" />
-              </span>
-            </button>
+              </Button>
+            </div>
           ))
         )}
       </div>
@@ -236,10 +236,9 @@ export default function AIChatPage() {
             </div>
             <div>
               <h1 className="text-sm font-semibold text-foreground">AI Asistan</h1>
-              <p className="text-xs text-muted-foreground">Kayıtlı verilerin hakkında soru sor.</p>
             </div>
           </div>
-          <Button variant="outline" size="sm" className="h-8 md:hidden text-xs px-3" onClick={() => setIsMobileSessionsOpen(true)}>
+          <Button effect="shine" variant="secondary" size="sm" className="md:hidden text-xs px-3" onClick={() => setIsMobileSessionsOpen(true)}>
             <MessageSquare className="h-3.5 w-3.5 mr-1.5" /> Sohbetler
           </Button>
         </header>
@@ -304,11 +303,11 @@ export default function AIChatPage() {
               disabled={isLoading}
             />
             {isLoading ? (
-              <Button type="button" variant="outline" size="icon" className="shrink-0 h-9 w-9" onClick={() => void stop()}>
+              <Button effect="shine" type="button" variant="secondary" size="icon" className="shrink-0" onClick={() => void stop()}>
                 <span className="h-3 w-3 bg-current" />
               </Button>
             ) : (
-              <Button type="submit" size="icon" className="shrink-0 h-9 w-9" disabled={!input.trim()}>
+              <Button variant="default" effect="shine" type="submit" size="icon" className="shrink-0" disabled={!input.trim()}>
                 <Send className="h-4 w-4" />
               </Button>
             )}
diff --git a/app/(dashboard)/clients/[id]/client-detail-client.tsx b/app/(dashboard)/clients/[id]/client-detail-client.tsx
index 938f787..d018bd8 100644
--- a/app/(dashboard)/clients/[id]/client-detail-client.tsx
+++ b/app/(dashboard)/clients/[id]/client-detail-client.tsx
@@ -102,7 +102,6 @@ export function ClientDetailClient({ client, activities }: { client: ClientDetai
           </div>
           <div>
             <h1 className="text-3xl font-bold text-foreground">{client.name}</h1>
-            {client.company_name && <p className="text-muted-foreground mt-1">{client.company_name}</p>}
           </div>
         </div>
         <div className="flex gap-2 items-center">
@@ -113,7 +112,7 @@ export function ClientDetailClient({ client, activities }: { client: ClientDetai
           {!client.client_auth_id && (
             <Dialog open={createUserOpen} onOpenChange={setCreateUserOpen}>
               <DialogTrigger asChild>
-                <Button variant="outline" size="sm" className="gap-2 ml-2 border-dashed">
+                <Button effect="shine" variant="secondary" size="sm" className="gap-2 ml-2 border-dashed">
                   <UserPlus className="h-4 w-4" /> Portal Hesabı Aç
                 </Button>
               </DialogTrigger>
@@ -135,9 +134,9 @@ export function ClientDetailClient({ client, activities }: { client: ClientDetai
                         <Label htmlFor="invitation-url">Davet bağlantısı</Label>
                         <div className="flex gap-2">
                           <Input id="invitation-url" value={invitationUrl} readOnly />
-                          <Button
+                          <Button effect="shine"
                             type="button"
-                            variant="outline"
+                            variant="secondary"
                             size="icon"
                             aria-label="Davet bağlantısını kopyala"
                             onClick={async () => {
@@ -153,8 +152,8 @@ export function ClientDetailClient({ client, activities }: { client: ClientDetai
                     ) : null}
                   </div>
                   <DialogFooter>
-                    <Button type="button" variant="ghost" onClick={() => setCreateUserOpen(false)}>İptal</Button>
-                    <Button type="submit" disabled={isCreatingUser || Boolean(invitationUrl)}>
+                    <Button effect="shine" type="button" variant="secondary" onClick={() => setCreateUserOpen(false)}>İptal</Button>
+                    <Button variant="default" effect="shine" type="submit" disabled={isCreatingUser || Boolean(invitationUrl)}>
                       {isCreatingUser && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
                       Davet Oluştur
                     </Button>
@@ -226,7 +225,7 @@ export function ClientDetailClient({ client, activities }: { client: ClientDetai
                 
                 <Dialog open={openDialog} onOpenChange={setOpenDialog}>
                   <DialogTrigger asChild>
-                    <Button size="sm" className="gap-2">
+                    <Button variant="default" effect="shine" size="sm" className="gap-2">
                       <Plus className="h-4 w-4" /> Aktivite Ekle
                     </Button>
                   </DialogTrigger>
@@ -262,7 +261,7 @@ export function ClientDetailClient({ client, activities }: { client: ClientDetai
                         </div>
                       </div>
                       <DialogFooter>
-                        <Button type="submit" disabled={isAddingActivity}>
+                        <Button variant="default" effect="shine" type="submit" disabled={isAddingActivity}>
                           {isAddingActivity ? "Ekleniyor..." : "Ekle"}
                         </Button>
                       </DialogFooter>
diff --git a/app/(dashboard)/clients/clients-client.tsx b/app/(dashboard)/clients/clients-client.tsx
index 65a0896..ed4e37e 100644
--- a/app/(dashboard)/clients/clients-client.tsx
+++ b/app/(dashboard)/clients/clients-client.tsx
@@ -167,9 +167,6 @@ export function ClientsClient({
           <h1 className="text-3xl font-semibold tracking-normal text-foreground">
             CRM & Müşteriler
           </h1>
-          <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
-            Potansiyel müşterilerini pipeline üzerinden takip et ve müşteri ilişkilerini yönet.
-          </p>
         </div>
 
         <ClientDialog mode="create" />
@@ -331,7 +328,7 @@ function DraggableClientCard({
               {client.name}
             </PendingLink>
             <div onPointerDown={(e) => e.stopPropagation()}>
-              <ClientDialog mode="edit" client={client} trigger={<Button variant="ghost" className="h-6 w-6 p-0"><Pencil className="h-3 w-3" /></Button>} />
+              <ClientDialog mode="edit" client={client} trigger={<Button size="icon-sm" effect="shine" variant="secondary" ><Pencil className="h-3 w-3" /></Button>} />
             </div>
           </div>
           {client.company_name && <p className="text-xs text-muted-foreground mb-2 pointer-events-none">{client.company_name}</p>}
@@ -412,11 +409,11 @@ function ClientRow({ client }: { client: ClientListItem }) {
 
       <div className="flex justify-end gap-2">
         <PendingLink href={`/clients/${client.id}`} className="inline-flex" showSpinner>
-          <Button variant="ghost" className="h-9 w-9 p-0">
+          <Button size="icon" effect="shine" variant="secondary" >
             <ArrowRight className="h-4 w-4" />
           </Button>
         </PendingLink>
-        <ClientDialog mode="edit" client={client} trigger={<Button variant="outline" className="h-9 min-w-20 gap-2 px-3"><Pencil className="h-4 w-4" /> Düzenle</Button>} />
+        <ClientDialog mode="edit" client={client} trigger={<Button effect="shine" variant="secondary" className="min-w-20 gap-2 px-3"><Pencil className="h-4 w-4" /> Düzenle</Button>} />
       </div>
     </div>
   );
@@ -457,9 +454,9 @@ function ClientDialog({
     <Dialog open={open} onOpenChange={setOpen}>
       <DialogTrigger asChild>
         {trigger || (
-          <Button
-            variant={mode === "create" ? "default" : "outline"}
-            className="h-9 min-w-24 gap-2 px-3"
+          <Button effect="shine"
+            variant={mode === "create" ? "default" : "secondary"}
+            className="min-w-24 gap-2 px-3"
           >
             {mode === "create" ? <Plus className="h-4 w-4" /> : <Pencil className="h-4 w-4" />}
             {mode === "create" ? "Müşteri ekle" : "Düzenle"}
@@ -483,7 +480,7 @@ function ClientDialog({
           </div>
 
           <DialogFooter className="shrink-0 border-t border-border bg-background p-5">
-            <Button type="submit" disabled={isSubmitting} className="w-full gap-2 sm:w-auto">
+            <Button variant="default" effect="shine" type="submit" disabled={isSubmitting} className="w-full gap-2 sm:w-auto">
               {mode === "create" ? <Plus className="h-4 w-4" /> : <Pencil className="h-4 w-4" />}
               {isSubmitting
                 ? "Kaydediliyor"
diff --git a/app/(dashboard)/projects/[id]/project-detail-client.tsx b/app/(dashboard)/projects/[id]/project-detail-client.tsx
index 95aa268..b983579 100644
--- a/app/(dashboard)/projects/[id]/project-detail-client.tsx
+++ b/app/(dashboard)/projects/[id]/project-detail-client.tsx
@@ -198,7 +198,7 @@ export function ProjectDetailClient({
     <div className="mx-auto flex max-w-7xl flex-col gap-6">
       <div className="flex flex-col gap-4 border-b border-border pb-5 lg:flex-row lg:items-end lg:justify-between">
         <div className="space-y-3">
-          <Button asChild variant="ghost" className="h-8 gap-2 px-0 text-muted-foreground">
+          <Button size="sm" effect="shine" asChild variant="secondary" className="gap-2 px-0 text-muted-foreground">
             <PendingLink href="/projects" className="flex items-center gap-2" showSpinner>
               <ArrowLeft className="h-4 w-4" />
               Projelere dön
@@ -213,9 +213,6 @@ export function ProjectDetailClient({
                 {statusLabels[project.status]}
               </Badge>
             </div>
-            <p className="mt-1 max-w-3xl text-sm text-muted-foreground">
-              {project.description || "Bu proje için kısa açıklama eklenmedi."}
-            </p>
           </div>
         </div>
 
@@ -226,7 +223,7 @@ export function ProjectDetailClient({
             <form action={completeProjectRecord}>
               <input type="hidden" name="id" value={project.id} />
               <PendingSubmitButton
-                variant="outline"
+                variant="secondary"
                 className="gap-2"
                 idleIcon={<CheckCircle2 className="h-4 w-4" />}
                 pendingChildren="Tamamlanıyor"
@@ -457,8 +454,8 @@ function PlanningSectionCard({ section }: { section: ProjectPlanningSectionItem
               <input type="hidden" name="id" value={section.id} />
               <input type="hidden" name="project_id" value={section.project_id} />
               <PendingSubmitButton
-                variant="outline"
-                className="h-9 px-3 text-rose-600"
+                variant="secondary"
+                className="px-3 text-rose-600"
                 idleIcon={<Trash2 className="h-4 w-4" />}
                 aria-label="Sil"
               />
@@ -505,9 +502,9 @@ function SectionDialog({
   return (
     <Dialog open={open} onOpenChange={setOpen}>
       <DialogTrigger asChild>
-        <Button
-          variant={mode === "create" ? "default" : "outline"}
-          className="h-9 gap-2 px-3"
+        <Button effect="shine"
+          variant={mode === "create" ? "default" : "secondary"}
+          className="gap-2 px-3"
         >
           {mode === "create" ? <Plus className="h-4 w-4" /> : <Pencil className="h-4 w-4" />}
           {mode === "create" ? "Alan ekle" : null}
@@ -574,7 +571,7 @@ function SectionDialog({
           </div>
 
           <DialogFooter>
-            <Button type="submit" disabled={isSubmitting} className="gap-2">
+            <Button variant="default" effect="shine" type="submit" disabled={isSubmitting} className="gap-2">
               {isSubmitting ? "Kaydediliyor" : "Kaydet"}
             </Button>
           </DialogFooter>
@@ -652,19 +649,19 @@ function TaskPanel({
           </div>
           <div className="flex flex-col gap-2 sm:flex-row">
             <div className="flex rounded-sm border border-border p-1">
-              <Button
+              <Button size="sm" effect="shine"
                 type="button"
-                variant={view === "list" ? "default" : "ghost"}
-                className="h-8 gap-2 px-3"
+                variant={view === "list" ? "default" : "secondary"}
+                className="gap-2 px-3"
                 onClick={() => setView("list")}
               >
                 <LayoutList className="h-4 w-4" />
                 Liste
               </Button>
-              <Button
+              <Button size="sm" effect="shine"
                 type="button"
-                variant={view === "kanban" ? "default" : "ghost"}
-                className="h-8 gap-2 px-3"
+                variant={view === "kanban" ? "default" : "secondary"}
+                className="gap-2 px-3"
                 onClick={() => setView("kanban")}
               >
                 <KanbanSquare className="h-4 w-4" />
@@ -720,12 +717,12 @@ function TaskPanel({
                   </div>
                   <div className="flex justify-start lg:justify-end">
                     {task.status !== "done" ? (
-                      <Button
+                      <Button effect="shine"
                         type="button"
-                        variant="outline"
+                        variant="secondary"
                         disabled={pendingTaskIds.has(task.id)}
                         aria-busy={pendingTaskIds.has(task.id)}
-                        className="h-9 gap-2 px-3"
+                        className="gap-2 px-3"
                         onClick={() => handleTaskStatusChange(task.id, "done")}
                       >
                         {pendingTaskIds.has(task.id) ? (
@@ -830,11 +827,12 @@ function ProjectTaskKanban({
                       <Badge className={priorityClasses[task.priority]}>{task.priority}</Badge>
                       {task.status !== "done" ? (
                         <Button
+                          size="icon-sm"
+                          effect="shine"
                           type="button"
-                          variant="outline"
+                          variant="secondary"
                           disabled={pendingTaskIds.has(task.id)}
                           aria-busy={pendingTaskIds.has(task.id)}
-                          className="h-8 w-8 p-0"
                           title="Tamamla"
                           aria-label="Tamamla"
                           onClick={() => onTaskStatusChange(task.id, "done")}
@@ -881,7 +879,7 @@ function ProjectSettingsDialog({ project }: { project: ProjectDetail }) {
   return (
     <Dialog open={open} onOpenChange={setOpen}>
       <DialogTrigger asChild>
-        <Button variant="outline" className="h-9 gap-2 px-3">
+        <Button effect="shine" variant="secondary" className="gap-2 px-3">
           <Settings2 className="h-4 w-4" />
           <span className="hidden sm:inline">Ayarlar</span>
         </Button>
@@ -942,7 +940,7 @@ function ProjectSettingsDialog({ project }: { project: ProjectDetail }) {
           </div>
 
           <DialogFooter>
-            <Button type="submit" disabled={isSubmitting}>
+            <Button variant="default" effect="shine" type="submit" disabled={isSubmitting}>
               {isSubmitting ? "Kaydediliyor..." : "Kaydet"}
             </Button>
           </DialogFooter>
@@ -977,7 +975,7 @@ function ProjectTaskDialog({
   return (
     <Dialog open={open} onOpenChange={setOpen}>
       <DialogTrigger asChild>
-        <Button className="h-9 gap-2 px-3">
+        <Button variant="default" effect="shine" className="gap-2 px-3">
           <Plus className="h-4 w-4" />
           Görev ekle
         </Button>
@@ -1091,7 +1089,7 @@ function ProjectTaskDialog({
           </div>
 
           <DialogFooter>
-            <Button type="submit" disabled={isSubmitting} className="gap-2">
+            <Button variant="default" effect="shine" type="submit" disabled={isSubmitting} className="gap-2">
               <Plus className="h-4 w-4" />
               {isSubmitting ? "Kaydediliyor" : "Görevi ekle"}
             </Button>
@@ -1217,10 +1215,10 @@ function TabButton({
   children: React.ReactNode;
 }) {
   return (
-    <Button
+    <Button effect="shine"
       type="button"
-      variant={active ? "default" : "ghost"}
-      className="h-9 px-4"
+      variant={active ? "default" : "secondary"}
+      className="px-4"
       onClick={onClick}
     >
       {children}
diff --git a/app/(dashboard)/projects/projects-client.tsx b/app/(dashboard)/projects/projects-client.tsx
index dacb498..7b777bb 100644
--- a/app/(dashboard)/projects/projects-client.tsx
+++ b/app/(dashboard)/projects/projects-client.tsx
@@ -119,9 +119,6 @@ export function ProjectsClient({ projects, clients }: ProjectsClientProps) {
           <h1 className="text-3xl font-semibold tracking-normal text-foreground">
             Projeler
           </h1>
-          <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
-            Müşteri işleri ve kişisel side projectleri aynı yerde takip et.
-          </p>
         </div>
 
         <div className="flex gap-2">
@@ -154,19 +151,19 @@ export function ProjectsClient({ projects, clients }: ProjectsClientProps) {
                 className="sm:w-80"
               />
               <div className="flex rounded-sm border border-border p-1">
-                <Button
+                <Button size="sm" effect="shine"
                   type="button"
-                  variant={view === "grid" ? "default" : "ghost"}
-                  className="h-8 gap-2 px-3"
+                  variant={view === "grid" ? "default" : "secondary"}
+                  className="gap-2 px-3"
                   onClick={() => setView("grid")}
                 >
                   <LayoutGrid className="h-4 w-4" />
                   Kart
                 </Button>
-                <Button
+                <Button size="sm" effect="shine"
                   type="button"
-                  variant={view === "list" ? "default" : "ghost"}
-                  className="h-8 gap-2 px-3"
+                  variant={view === "list" ? "default" : "secondary"}
+                  className="gap-2 px-3"
                   onClick={() => setView("list")}
                 >
                   <List className="h-4 w-4" />
@@ -367,9 +364,10 @@ function ProjectActions({
     >
       {showDetail ? (
         <Button
+          size="icon"
+          effect="shine"
           asChild
-          variant="outline"
-          className="h-9 w-9 p-0"
+          variant="secondary"
           title="Detaya git"
           aria-label="Detaya git"
         >
@@ -383,8 +381,8 @@ function ProjectActions({
         <form action={completeProjectRecord}>
           <input type="hidden" name="id" value={project.id} />
           <PendingSubmitButton
-            variant="outline"
-            className="h-9 w-9 p-0"
+            size="icon"
+            variant="secondary"
             title="Tamamla"
             aria-label="Tamamla"
             idleIcon={<CheckCircle2 className="h-4 w-4" />}
@@ -433,9 +431,10 @@ function ProjectDialog({
   return (
     <Dialog open={open} onOpenChange={setOpen}>
       <DialogTrigger asChild>
-        <Button
-          variant={mode === "create" ? "default" : "outline"}
-          className={iconOnly ? "h-9 w-9 p-0" : "h-9 min-w-24 gap-2 px-3"}
+        <Button effect="shine"
+          variant={mode === "create" ? "default" : "secondary"}
+          size={iconOnly ? "icon" : "default"}
+          className={iconOnly ? undefined : "min-w-24 gap-2 px-3"}
           title={mode === "create" ? "Proje ekle" : "Düzenle"}
           aria-label={mode === "create" ? "Proje ekle" : "Düzenle"}
         >
@@ -463,7 +462,7 @@ function ProjectDialog({
           </div>
 
           <DialogFooter className="shrink-0 border-t border-border bg-background p-5">
-            <Button type="submit" disabled={isSubmitting} className="w-full gap-2 sm:w-auto">
+            <Button variant="default" effect="shine" type="submit" disabled={isSubmitting} className="w-full gap-2 sm:w-auto">
               {mode === "create" ? <Plus className="h-4 w-4" /> : <Pencil className="h-4 w-4" />}
               {isSubmitting
                 ? "Kaydediliyor"
@@ -787,7 +786,7 @@ function AIProjectRiskDialog({ projectId }: { projectId?: string }) {
   return (
     <Dialog open={open} onOpenChange={setOpen}>
       <DialogTrigger asChild>
-        <Button variant="outline" className="gap-2 bg-indigo-50 text-indigo-700 border-indigo-200 hover:bg-indigo-100 hover:text-indigo-800">
+        <Button effect="shine" variant="secondary" className="gap-2">
           <Brain className="h-4 w-4" />
           AI Risk Analizi
         </Button>
@@ -806,7 +805,7 @@ function AIProjectRiskDialog({ projectId }: { projectId?: string }) {
         <div className="py-4">
           {!result && !loading && (
             <div className="text-center py-10">
-              <Button onClick={handleAnalyze} className="gap-2 bg-indigo-600 hover:bg-indigo-700 text-white">
+              <Button variant="default" effect="shine" onClick={handleAnalyze} className="gap-2">
                 <Brain className="h-4 w-4" />
                 Raporu Oluştur
               </Button>
@@ -829,8 +828,8 @@ function AIProjectRiskDialog({ projectId }: { projectId?: string }) {
 
         {result && (
           <DialogFooter>
-            <Button variant="outline" onClick={() => setOpen(false)}>Kapat</Button>
-            <Button variant="default" onClick={handleAnalyze} className="gap-2">
+            <Button effect="shine" variant="secondary" onClick={() => setOpen(false)}>Kapat</Button>
+            <Button effect="shine" variant="default" onClick={handleAnalyze} className="gap-2">
               <Brain className="h-4 w-4" />
               Yeniden Oluştur
             </Button>
diff --git a/app/(dashboard)/settings/page.tsx b/app/(dashboard)/settings/page.tsx
index 1d34eec..1f156fc 100644
--- a/app/(dashboard)/settings/page.tsx
+++ b/app/(dashboard)/settings/page.tsx
@@ -261,9 +261,6 @@ export default function SettingsPage() {
           <h1 className="text-3xl font-semibold tracking-normal text-foreground">
             Ayarlar
           </h1>
-          <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
-            Workspace markanızı, profilinizi, görünümü ve sistem tercihlerinizi yönetin.
-          </p>
         </div>
       </div>
 
@@ -273,18 +270,16 @@ export default function SettingsPage() {
           {tabs.map((tab) => {
             const Icon = tab.icon;
             return (
-              <button
+              <Button effect="shine"
                 key={tab.name}
+                type="button"
+                variant={activeTab === tab.name ? "default" : "secondary"}
                 onClick={() => setActiveTab(tab.name)}
-                className={`flex shrink-0 items-center gap-3 px-4 py-3 rounded-md text-sm font-medium transition-colors text-left ${
-                  activeTab === tab.name 
-                    ? "bg-primary/10 text-primary" 
-                    : "text-muted-foreground hover:bg-muted hover:text-foreground"
-                }`}
+                className="h-auto shrink-0 justify-start gap-3 px-4 py-3 text-left"
               >
                 <Icon className="h-4 w-4" />
                 {tab.name}
-              </button>
+              </Button>
             )
           })}
         </div>
@@ -448,7 +443,7 @@ export default function SettingsPage() {
                   </section>
 
                   <div className="flex items-center gap-3 border-t border-border pt-6">
-                    <Button type="submit" loading={isSavingBranding} className="gap-2">
+                    <Button variant="default" effect="shine" type="submit" loading={isSavingBranding} className="gap-2">
                       <Upload className="h-4 w-4" aria-hidden="true" />
                       Genel ayarları kaydet
                     </Button>
@@ -561,7 +556,7 @@ export default function SettingsPage() {
                   </div>
 
                   <div className="flex items-center gap-4 pt-4">
-                    <Button type="submit" className="gap-2">
+                    <Button variant="default" effect="shine" type="submit" className="gap-2">
                       <Save className="h-4 w-4" /> Profili Kaydet
                     </Button>
                   </div>
@@ -584,7 +579,7 @@ export default function SettingsPage() {
                     <Input id="password" name="password" type="password" minLength={8} placeholder="En az 8 karakter" required />
                   </div>
                   <div className="flex items-center gap-4 pt-4">
-                    <Button type="submit" className="gap-2">
+                    <Button variant="default" effect="shine" type="submit" className="gap-2">
                       <Save className="h-4 w-4" /> Şifreyi Güncelle
                     </Button>
                   </div>
@@ -644,7 +639,7 @@ export default function SettingsPage() {
                   )}
 
                   <div className="flex items-center gap-4 pt-4">
-                    <Button onClick={handleSaveAI} className="gap-2">
+                    <Button variant="default" effect="shine" onClick={handleSaveAI} className="gap-2">
                       <Save className="h-4 w-4" /> Ayarları Kaydet
                     </Button>
                   </div>
@@ -725,9 +720,9 @@ function BrandingAssetField({
           className="cursor-pointer"
         />
         {hasCustomAsset ? (
-          <Button
+          <Button effect="shine"
             type="button"
-            variant="ghost"
+            variant="secondary"
             size="sm"
             disabled={disabled}
             onClick={() => onRemove(asset)}
diff --git a/app/(dashboard)/tasks/tasks-client.tsx b/app/(dashboard)/tasks/tasks-client.tsx
index a88c480..3443862 100644
--- a/app/(dashboard)/tasks/tasks-client.tsx
+++ b/app/(dashboard)/tasks/tasks-client.tsx
@@ -184,9 +184,6 @@ export function TasksClient({ tasks, clients, projects }: TasksClientProps) {
           <h1 className="text-3xl font-semibold tracking-normal text-foreground">
             Görevler
           </h1>
-          <p className="mt-1 max-w-2xl text-sm text-muted-foreground">
-            Proje ve müşteri bağlantılı işleri liste veya basit kanban ile takip et.
-          </p>
         </div>
 
         <TaskDialog mode="create" clients={clients} projects={projects} />
@@ -230,19 +227,19 @@ export function TasksClient({ tasks, clients, projects }: TasksClientProps) {
                 </SelectContent>
               </Select>
               <div className="flex rounded-sm border border-border p-1">
-                <Button
+                <Button size="sm" effect="shine"
                   type="button"
-                  variant={view === "list" ? "default" : "ghost"}
-                  className="h-8 gap-2 px-3"
+                  variant={view === "list" ? "default" : "secondary"}
+                  className="gap-2 px-3"
                   onClick={() => setView("list")}
                 >
                   <LayoutList className="h-4 w-4" />
                   Liste
                 </Button>
-                <Button
+                <Button size="sm" effect="shine"
                   type="button"
-                  variant={view === "kanban" ? "default" : "ghost"}
-                  className="h-8 gap-2 px-3"
+                  variant={view === "kanban" ? "default" : "secondary"}
+                  className="gap-2 px-3"
                   onClick={() => setView("kanban")}
                 >
                   <KanbanSquare className="h-4 w-4" />
@@ -490,12 +487,12 @@ function TaskActions({
     <div className={compact ? "flex justify-end gap-1" : "flex justify-start gap-2 lg:justify-end"}>
       <TaskDialog mode="edit" task={task} clients={clients} projects={projects} />
       {task.status !== "done" ? (
-        <Button
+        <Button effect="shine"
           type="button"
-          variant="outline"
+          variant="secondary"
           disabled={isPending}
           aria-busy={isPending}
-          className="h-9 min-w-24 gap-2 px-3"
+          className="min-w-24 gap-2 px-3"
           onClick={() => onTaskStatusChange(task.id, "done")}
         >
           {isPending ? (
@@ -506,12 +503,12 @@ function TaskActions({
           {!compact ? (isPending ? "Tamamlanıyor" : "Tamamla") : null}
         </Button>
       ) : null}
-      <Button
+      <Button effect="shine"
         type="button"
-        variant="outline"
+        variant="secondary"
         disabled={isPending}
         aria-busy={isPending}
-        className="h-9 gap-2 px-3 text-rose-600"
+        className="gap-2 px-3 text-rose-600"
         onClick={() => onTaskDelete(task.id)}
       >
         {isPending ? (
@@ -560,9 +557,9 @@ function TaskDialog({
   return (
     <Dialog open={open} onOpenChange={setOpen}>
       <DialogTrigger asChild>
-        <Button
-          variant={mode === "create" ? "default" : "outline"}
-          className="h-9 min-w-24 gap-2 px-3"
+        <Button effect="shine"
+          variant={mode === "create" ? "default" : "secondary"}
+          className="min-w-24 gap-2 px-3"
         >
           {mode === "create" ? <Plus className="h-4 w-4" /> : <Pencil className="h-4 w-4" />}
           {mode === "create" ? "Görev ekle" : "Düzenle"}
@@ -583,7 +580,7 @@ function TaskDialog({
           </div>
 
           <DialogFooter className="shrink-0 border-t border-border bg-background p-5">
-            <Button type="submit" disabled={isSubmitting} className="w-full gap-2 sm:w-auto">
+            <Button variant="default" effect="shine" type="submit" disabled={isSubmitting} className="w-full gap-2 sm:w-auto">
               {mode === "create" ? <Plus className="h-4 w-4" /> : <Pencil className="h-4 w-4" />}
               {isSubmitting
                 ? "Kaydediliyor"