diff --git a/resources/css/app.css b/resources/css/app.css
index 783e69c..97767d0 100644
--- a/resources/css/app.css
+++ b/resources/css/app.css
@@ -2,6 +2,8 @@
 
 @import 'tw-animate-css';
 
+@import './components.css';
+
 @source '../../vendor/laravel/framework/src/Illuminate/Pagination/resources/views/*.blade.php';
 @source '../../storage/framework/views/*.php';
 
diff --git a/resources/css/components.css b/resources/css/components.css
new file mode 100644
index 0000000..a6906da
--- /dev/null
+++ b/resources/css/components.css
@@ -0,0 +1,16 @@
+/* ==========================================================================
+   BEM UI Components Index Manifest (Tailwind CSS v4)
+   ========================================================================== */
+
+@import './components/heading.css';
+@import './components/input-error.css';
+@import './components/text-link.css';
+@import './components/app-logo.css';
+@import './components/user-info.css';
+@import './components/sidebar-header.css';
+@import './components/app-content.css';
+@import './components/appearance-tabs.css';
+@import './components/password-input.css';
+@import './components/auth-layout.css';
+@import './components/chat.css';
+@import './components/lightbox.css';
diff --git a/resources/css/components/app-content.css b/resources/css/components/app-content.css
new file mode 100644
index 0000000..f19c554
--- /dev/null
+++ b/resources/css/components/app-content.css
@@ -0,0 +1,5 @@
+/* 7. AppContent Layout Component */
+.app-content {
+    @apply mx-auto flex h-full w-full max-w-7xl flex-1 flex-col gap-4;
+    border-radius: var(--radius);
+}
diff --git a/resources/css/components/app-logo.css b/resources/css/components/app-logo.css
new file mode 100644
index 0000000..fc7e468
--- /dev/null
+++ b/resources/css/components/app-logo.css
@@ -0,0 +1,20 @@
+/* 4. AppLogo Component */
+.app-logo__icon-container {
+    @apply flex aspect-square size-8 items-center justify-center;
+    border-radius: var(--radius);
+    background-color: var(--sidebar-primary);
+    color: var(--sidebar-primary-foreground);
+
+    .app-logo__icon {
+        @apply size-5 fill-current;
+    }
+}
+
+.app-logo__text-container {
+    @apply ml-1 grid flex-1 text-left text-sm;
+
+    .app-logo__text {
+        @apply mb-0.5 truncate leading-tight font-semibold;
+        color: var(--foreground);
+    }
+}
diff --git a/resources/css/components/appearance-tabs.css b/resources/css/components/appearance-tabs.css
new file mode 100644
index 0000000..462f7c7
--- /dev/null
+++ b/resources/css/components/appearance-tabs.css
@@ -0,0 +1,35 @@
+/* 8. AppearanceTabs Component */
+.appearance-tabs {
+    @apply inline-flex gap-1 p-1;
+    border-radius: var(--radius);
+    background-color: var(--muted);
+
+    .appearance-tabs__tab {
+        @apply flex cursor-pointer items-center px-3.5 py-1.5 transition-colors;
+        border-radius: calc(var(--radius) - 2px);
+        color: var(--muted-foreground);
+
+        &:hover {
+            color: var(--foreground);
+            background-color: rgba(0, 0, 0, 0.05);
+        }
+
+        &.appearance-tabs__tab--active {
+            background-color: var(--card);
+            color: var(--card-foreground);
+            box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
+
+            &:hover {
+                background-color: var(--card);
+            }
+        }
+    }
+
+    .appearance-tabs__icon {
+        @apply -ml-1 h-4 w-4;
+    }
+
+    .appearance-tabs__label {
+        @apply ml-1.5 text-sm;
+    }
+}
diff --git a/resources/css/components/auth-layout.css b/resources/css/components/auth-layout.css
new file mode 100644
index 0000000..9a7e3d7
--- /dev/null
+++ b/resources/css/components/auth-layout.css
@@ -0,0 +1,46 @@
+/* 10. AuthSimpleLayout Component */
+.auth-layout {
+    @apply flex min-h-svh flex-col items-center justify-center gap-6 p-6 md:p-10;
+    background-color: var(--background);
+
+    .auth-layout__container {
+        @apply w-full max-w-sm;
+
+        .auth-layout__inner {
+            @apply flex flex-col gap-8;
+
+            .auth-layout__header {
+                @apply flex flex-col items-center gap-4;
+
+                .auth-layout__logo-link {
+                    @apply flex flex-col items-center gap-2 font-medium;
+
+                    .auth-layout__logo-box {
+                        @apply mb-1 flex h-9 w-9 items-center justify-center;
+                        border-radius: var(--radius);
+                        background-color: var(--sidebar-primary);
+
+                        .auth-layout__logo {
+                            @apply size-9 fill-current;
+                            color: var(--sidebar-primary-foreground);
+                        }
+                    }
+                }
+
+                .auth-layout__title-box {
+                    @apply space-y-2 text-center;
+
+                    .auth-layout__title {
+                        @apply text-xl font-medium;
+                        color: var(--foreground);
+                    }
+
+                    .auth-layout__description {
+                        @apply text-center text-sm;
+                        color: var(--muted-foreground);
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/resources/css/components/chat.css b/resources/css/components/chat.css
new file mode 100644
index 0000000..a383573
--- /dev/null
+++ b/resources/css/components/chat.css
@@ -0,0 +1,210 @@
+/* 11. Chat Component */
+.c-chat {
+    @apply mt-8;
+
+    .c-chat__title {
+        @apply text-lg font-medium;
+        color: var(--foreground);
+    }
+
+    .c-chat__list {
+        @apply mt-4 flex flex-col gap-3;
+
+        .c-chat__message {
+            @apply overflow-hidden p-4 shadow-sm sm:rounded-lg;
+            border: 1px solid var(--border);
+
+            &.c-chat__message--system {
+                @apply w-full self-center border-0 bg-transparent p-0 shadow-none;
+            }
+
+            &.c-chat__message--own {
+                @apply self-end rounded-br-none text-right;
+                max-width: 80%;
+                background-color: var(--primary);
+                border-color: var(--primary);
+
+                .c-chat__message-header {
+                    @apply flex-row-reverse;
+                }
+                .c-chat__message-author {
+                    color: var(--primary-foreground);
+                }
+                .c-chat__message-time {
+                    color: var(--primary-foreground);
+                    opacity: 0.7;
+                }
+                .c-chat__message-text {
+                    color: var(--primary-foreground);
+                }
+            }
+
+            &.c-chat__message--other {
+                @apply self-start rounded-bl-none;
+                max-width: 80%;
+                background-color: var(--muted);
+                border-color: var(--border);
+
+                .c-chat__message-author {
+                    color: var(--foreground);
+                }
+                .c-chat__message-time {
+                    color: var(--muted-foreground);
+                }
+                .c-chat__message-text {
+                    color: var(--foreground);
+                }
+            }
+
+            .c-chat__system-inner {
+                @apply flex items-center gap-2 px-3 py-1.5 text-xs;
+                background-color: var(--muted);
+                border: 1px solid var(--border);
+                border-radius: calc(var(--radius) - 2px);
+                color: var(--muted-foreground);
+
+                .c-chat__system-icon {
+                    @apply size-3.5 shrink-0;
+                    color: var(--muted-foreground);
+                }
+
+                .c-chat__system-text {
+                    @apply flex-1 font-medium;
+                }
+
+                .c-chat__system-time {
+                    @apply shrink-0 text-[10px];
+                    color: var(--muted-foreground);
+                }
+            }
+
+            .c-chat__message-header {
+                @apply flex justify-between;
+
+                .c-chat__message-author {
+                    @apply font-semibold;
+                    color: var(--foreground);
+                }
+
+                .c-chat__message-time {
+                    @apply text-xs;
+                    color: var(--muted-foreground);
+                }
+            }
+
+            .c-chat__message-text {
+                @apply mt-2 text-sm;
+                color: var(--foreground);
+            }
+
+            .c-chat__message-media {
+                @apply mt-3 flex flex-wrap gap-2;
+
+                .c-chat__media-item {
+                    @apply relative max-w-[240px] overflow-hidden bg-black;
+                    border-radius: calc(var(--radius) - 2px);
+                    border: 1px solid var(--border);
+
+                    .c-chat__image {
+                        @apply h-auto max-h-[180px] w-full object-cover;
+                    }
+
+                    .c-chat__video {
+                        @apply h-auto max-h-[180px] w-full;
+                    }
+
+                    .c-chat__play-overlay {
+                        @apply absolute inset-0 flex items-center justify-center bg-black/40 text-2xl font-bold text-white;
+                    }
+                }
+            }
+        }
+    }
+
+    .c-chat__empty {
+        color: var(--muted-foreground);
+    }
+
+    .c-chat__form {
+        @apply mt-6 space-y-6;
+
+        .c-chat__form-group {
+            @apply space-y-2;
+
+            .c-chat__label {
+                @apply block text-sm font-medium;
+                color: var(--foreground);
+            }
+
+            .c-chat__textarea {
+                @apply mt-1 block w-full shadow-sm;
+                border-radius: var(--radius);
+                border: 1px solid var(--border);
+                background-color: var(--background);
+                color: var(--foreground);
+            }
+
+            .c-chat__error {
+                @apply text-sm;
+                color: var(--destructive);
+            }
+
+            .c-chat__attachment-container {
+                @apply mt-2 flex items-center;
+
+                .c-chat__attach-btn {
+                    @apply inline-flex cursor-pointer items-center gap-1.5 text-xs transition-colors;
+                    color: var(--muted-foreground);
+
+                    &:hover {
+                        color: var(--foreground);
+                    }
+
+                    .c-chat__attach-icon {
+                        @apply size-3.5;
+                    }
+                }
+            }
+
+            .c-chat__preview-list {
+                @apply mt-2 flex flex-wrap gap-2;
+
+                .c-chat__preview-item {
+                    @apply relative inline-flex items-center gap-2 p-1.5 pr-8 text-xs;
+                    border-radius: calc(var(--radius) - 2px);
+                    border: 1px solid var(--border);
+                    background-color: var(--muted);
+
+                    .c-chat__preview-name {
+                        @apply max-w-[150px] truncate;
+                        color: var(--foreground);
+                    }
+
+                    .c-chat__preview-remove {
+                        @apply absolute top-1.5 right-1.5 cursor-pointer text-[10px];
+                        color: var(--muted-foreground);
+
+                        &:hover {
+                            color: var(--destructive);
+                        }
+                    }
+                }
+            }
+        }
+
+        .c-chat__submit-box {
+            @apply flex items-center gap-4;
+
+            .c-chat__button {
+                @apply inline-flex items-center border border-transparent px-4 py-2 text-xs font-semibold tracking-widest uppercase transition duration-150 ease-in-out focus:ring-2 focus:outline-none;
+                border-radius: var(--radius);
+                background-color: var(--primary);
+                color: var(--primary-foreground);
+
+                &:hover {
+                    opacity: 0.9;
+                }
+            }
+        }
+    }
+}
diff --git a/resources/css/components/heading.css b/resources/css/components/heading.css
new file mode 100644
index 0000000..ca58613
--- /dev/null
+++ b/resources/css/components/heading.css
@@ -0,0 +1,22 @@
+/* 1. Heading Component */
+.c-heading {
+    @apply mb-8 space-y-0.5;
+
+    &.c-heading--small {
+        @apply mb-0 space-y-0;
+
+        .c-heading__title {
+            @apply mb-0.5 text-base font-medium tracking-normal;
+        }
+    }
+
+    .c-heading__title {
+        @apply text-xl font-semibold tracking-tight;
+        color: var(--foreground);
+    }
+
+    .c-heading__description {
+        @apply text-sm;
+        color: var(--muted-foreground);
+    }
+}
diff --git a/resources/css/components/input-error.css b/resources/css/components/input-error.css
new file mode 100644
index 0000000..fbae00d
--- /dev/null
+++ b/resources/css/components/input-error.css
@@ -0,0 +1,5 @@
+/* 2. InputError Component */
+.c-input-error__message {
+    @apply text-sm;
+    color: var(--destructive);
+}
diff --git a/resources/css/components/lightbox.css b/resources/css/components/lightbox.css
new file mode 100644
index 0000000..e1cee73
--- /dev/null
+++ b/resources/css/components/lightbox.css
@@ -0,0 +1,25 @@
+/* 12. Reusable Lightbox Component */
+.c-lightbox {
+    @apply fixed inset-0 z-50 flex items-center justify-center p-4;
+    background-color: rgba(0, 0, 0, 0.95);
+
+    .c-lightbox__close {
+        @apply absolute top-6 right-6 cursor-pointer text-3xl text-white transition-colors duration-200;
+
+        &:hover {
+            color: var(--destructive);
+        }
+    }
+
+    .c-lightbox__content {
+        @apply max-h-full max-w-full;
+
+        .c-lightbox__image {
+            @apply max-h-[90vh] max-w-full rounded object-contain shadow-lg;
+        }
+
+        .c-lightbox__video {
+            @apply max-h-[90vh] max-w-full rounded shadow-lg;
+        }
+    }
+}
diff --git a/resources/css/components/password-input.css b/resources/css/components/password-input.css
new file mode 100644
index 0000000..fa3cc35
--- /dev/null
+++ b/resources/css/components/password-input.css
@@ -0,0 +1,21 @@
+/* 9. PasswordInput Component */
+.password-input {
+    @apply relative;
+
+    .password-input__field {
+        @apply pr-10;
+    }
+
+    .password-input__toggle {
+        @apply absolute inset-y-0 right-0 flex items-center rounded-r-md px-3 focus-visible:outline-none;
+        color: var(--muted-foreground);
+
+        &:hover {
+            color: var(--foreground);
+        }
+    }
+
+    .password-input__icon {
+        @apply size-4;
+    }
+}
diff --git a/resources/css/components/sidebar-header.css b/resources/css/components/sidebar-header.css
new file mode 100644
index 0000000..2d07dcc
--- /dev/null
+++ b/resources/css/components/sidebar-header.css
@@ -0,0 +1,14 @@
+/* 6. AppSidebarHeader Component */
+.sidebar-header {
+    @apply flex h-16 shrink-0 items-center gap-2 transition-[width,height] ease-linear md:px-4;
+    border-bottom: 1px solid var(--sidebar-border);
+    background-color: var(--sidebar-background);
+}
+
+.sidebar-header__inner {
+    @apply flex items-center gap-2;
+}
+
+.group-has-data-[collapsible='icon']/sidebar-wrapper:h-12 .sidebar-header {
+    @apply h-12;
+}
diff --git a/resources/css/components/text-link.css b/resources/css/components/text-link.css
new file mode 100644
index 0000000..415d2da
--- /dev/null
+++ b/resources/css/components/text-link.css
@@ -0,0 +1,10 @@
+/* 3. TextLink Component */
+.c-text-link {
+    @apply underline underline-offset-4 transition-colors duration-300 ease-out;
+    color: var(--foreground);
+    text-decoration-color: var(--border);
+
+    &:hover {
+        text-decoration-color: var(--foreground);
+    }
+}
diff --git a/resources/css/components/user-info.css b/resources/css/components/user-info.css
new file mode 100644
index 0000000..f382ef4
--- /dev/null
+++ b/resources/css/components/user-info.css
@@ -0,0 +1,19 @@
+/* 5. UserInfo Component */
+.user-info__avatar {
+    @apply h-8 w-8 overflow-hidden;
+    border-radius: var(--radius);
+}
+
+.user-info__details {
+    @apply grid flex-1 text-left text-sm leading-tight;
+
+    .user-info__name {
+        @apply truncate font-medium;
+        color: var(--foreground);
+    }
+
+    .user-info__email {
+        @apply truncate text-xs;
+        color: var(--muted-foreground);
+    }
+}
diff --git a/resources/js/app.ts b/resources/js/app.ts
index 46d341c..45e170b 100644
--- a/resources/js/app.ts
+++ b/resources/js/app.ts
@@ -19,7 +19,7 @@ configureEcho({
     forceTLS: false,
     enabledTransports: ['ws', 'wss'],
 });
-if (window) {
+if (typeof window !== 'undefined') {
     (window as any).echoConfigured = true;
 }
 
diff --git a/resources/js/components/AppContent.vue b/resources/js/components/AppContent.vue
index bc99919..82f1a5e 100644
--- a/resources/js/components/AppContent.vue
+++ b/resources/js/components/AppContent.vue
@@ -22,11 +22,3 @@ const className = computed(() => props.class);
         <slot />
     </main>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.app-content {
-    @apply mx-auto flex h-full w-full max-w-7xl flex-1 flex-col gap-4 rounded-xl;
-}
-</style>
diff --git a/resources/js/components/AppLogo.vue b/resources/js/components/AppLogo.vue
index 313eff5..b6f7296 100644
--- a/resources/js/components/AppLogo.vue
+++ b/resources/js/components/AppLogo.vue
@@ -10,23 +10,3 @@ import AppLogoIcon from '@/components/AppLogoIcon.vue';
         <span class="app-logo__text">Laravel Starter Kit</span>
     </div>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.app-logo__icon-container {
-    @apply flex aspect-square size-8 items-center justify-center rounded-md bg-sidebar-primary text-sidebar-primary-foreground;
-}
-
-.app-logo__icon {
-    @apply size-5 fill-current text-white dark:text-black;
-}
-
-.app-logo__text-container {
-    @apply ml-1 grid flex-1 text-left text-sm;
-}
-
-.app-logo__text {
-    @apply mb-0.5 truncate leading-tight font-semibold;
-}
-</style>
diff --git a/resources/js/components/AppSidebarHeader.vue b/resources/js/components/AppSidebarHeader.vue
index 1af9362..0973fef 100644
--- a/resources/js/components/AppSidebarHeader.vue
+++ b/resources/js/components/AppSidebarHeader.vue
@@ -23,15 +23,3 @@ withDefaults(
         </div>
     </header>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.sidebar-header {
-    @apply flex h-16 shrink-0 items-center gap-2 border-b border-sidebar-border/70 px-6 transition-[width,height] ease-linear group-has-data-[collapsible=icon]/sidebar-wrapper:h-12 md:px-4;
-}
-
-.sidebar-header__inner {
-    @apply flex items-center gap-2;
-}
-</style>
diff --git a/resources/js/components/AppearanceTabs.vue b/resources/js/components/AppearanceTabs.vue
index 8663291..af2a1df 100644
--- a/resources/js/components/AppearanceTabs.vue
+++ b/resources/js/components/AppearanceTabs.vue
@@ -27,27 +27,3 @@ const tabs = [
         </button>
     </div>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.appearance-tabs {
-    @apply inline-flex gap-1 rounded-lg bg-neutral-100 p-1 dark:bg-neutral-800;
-}
-
-.appearance-tabs__tab {
-    @apply flex items-center rounded-md px-3.5 py-1.5 text-neutral-500 transition-colors hover:bg-neutral-200/60 hover:text-black dark:text-neutral-400 dark:hover:bg-neutral-700/60;
-}
-
-.appearance-tabs__tab--active {
-    @apply bg-white shadow-xs hover:bg-white dark:bg-neutral-700 dark:text-neutral-100 dark:hover:bg-neutral-700;
-}
-
-.appearance-tabs__icon {
-    @apply -ml-1 h-4 w-4;
-}
-
-.appearance-tabs__label {
-    @apply ml-1.5 text-sm;
-}
-</style>
diff --git a/resources/js/components/Chat.vue b/resources/js/components/Chat.vue
index 9bea09b..2cb75a3 100644
--- a/resources/js/components/Chat.vue
+++ b/resources/js/components/Chat.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
-import { ref } from 'vue';
-import { useForm } from '@inertiajs/vue3';
+import { ref, computed } from 'vue';
+import { useForm, usePage } from '@inertiajs/vue3';
 import { useEcho, echoIsConfigured, configureEcho } from '@laravel/echo-vue';
 import { route } from 'ziggy-js';
 import { Paperclip, Info } from '@lucide/vue';
@@ -10,7 +10,7 @@ const props = defineProps<{
         id: number;
         messages: Array<{
             id: number;
-            user: { name: string };
+            user: { id: number; name: string };
             content: string;
             created_at: string;
             media?: Array<{
@@ -63,6 +63,12 @@ function removeFile(index: number) {
     form.media.splice(index, 1);
 }
 
+const currentUser = computed(() => usePage().props.auth?.user);
+
+function isOwnMessage(messageUserId: number): boolean {
+    return currentUser.value && currentUser.value.id === messageUserId;
+}
+
 function submit() {
     form.post(route('chats.messages.store', props.chat.id), {
         onSuccess: () => {
@@ -103,6 +109,10 @@ function closeLightbox() {
                     {
                         'c-chat__message--system':
                             message.content.startsWith('System:'),
+                        'c-chat__message--own': isOwnMessage(message.user.id),
+                        'c-chat__message--other': !isOwnMessage(
+                            message.user.id,
+                        ),
                     },
                 ]"
             >
@@ -240,185 +250,22 @@ function closeLightbox() {
         </form>
 
         <!-- Gorgeous Dark Lightbox Modal -->
-        <div
-            v-if="activeLightboxUrl"
-            class="c-chat__lightbox"
-            @click="closeLightbox"
-        >
-            <button @click="closeLightbox" class="c-chat__lightbox-close">
-                ✕
-            </button>
-            <div class="c-chat__lightbox-content" @click.stop>
+        <div v-if="activeLightboxUrl" class="c-lightbox" @click="closeLightbox">
+            <button @click="closeLightbox" class="c-lightbox__close">✕</button>
+            <div class="c-lightbox__content" @click.stop>
                 <img
                     v-if="activeLightboxType === 'image'"
                     :src="activeLightboxUrl"
-                    class="c-chat__lightbox-image"
+                    class="c-lightbox__image"
                 />
                 <video
                     v-else-if="activeLightboxType === 'video'"
                     :src="activeLightboxUrl"
                     controls
                     autoplay
-                    class="c-chat__lightbox-video"
+                    class="c-lightbox__video"
                 ></video>
             </div>
         </div>
     </div>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.c-chat {
-    @apply mt-8;
-}
-
-.c-chat__title {
-    @apply text-lg font-medium text-gray-900 dark:text-gray-100;
-}
-
-.c-chat__list {
-    @apply mt-4 space-y-4;
-}
-
-.c-chat__message {
-    @apply overflow-hidden bg-white p-4 shadow-sm sm:rounded-lg dark:bg-gray-800;
-}
-
-.c-chat__message--system {
-    @apply border-0 bg-transparent p-0 shadow-none;
-}
-
-.c-chat__system-inner {
-    @apply flex items-center gap-2 rounded-md border border-neutral-200/60 bg-neutral-50 px-3 py-1.5 text-xs text-neutral-500 dark:border-neutral-800/40 dark:bg-neutral-900/10 dark:text-neutral-400;
-}
-
-.c-chat__system-icon {
-    @apply size-3.5 shrink-0 text-neutral-400;
-}
-
-.c-chat__system-text {
-    @apply flex-1 font-medium;
-}
-
-.c-chat__system-time {
-    @apply shrink-0 text-[10px] text-neutral-400;
-}
-
-.c-chat__message-header {
-    @apply flex justify-between;
-}
-
-.c-chat__message-author {
-    @apply font-semibold;
-}
-
-.c-chat__message-time {
-    @apply text-xs text-gray-500;
-}
-
-.c-chat__message-text {
-    @apply mt-2 text-sm text-gray-600 dark:text-gray-400;
-}
-
-.c-chat__message-media {
-    @apply mt-3 flex flex-wrap gap-2;
-}
-
-.c-chat__media-item {
-    @apply relative max-w-[240px] overflow-hidden rounded-md border border-neutral-200 bg-black dark:border-neutral-700;
-}
-
-.c-chat__image {
-    @apply h-auto max-h-[180px] w-full object-cover;
-}
-
-.c-chat__video {
-    @apply h-auto max-h-[180px] w-full;
-}
-
-.c-chat__play-overlay {
-    @apply absolute inset-0 flex items-center justify-center bg-black/40 text-2xl font-bold text-white;
-}
-
-.c-chat__empty {
-    @apply text-gray-500;
-}
-
-.c-chat__form {
-    @apply mt-6 space-y-6;
-}
-
-.c-chat__form-group {
-    @apply space-y-2;
-}
-
-.c-chat__label {
-    @apply block text-sm font-medium text-gray-700 dark:text-gray-300;
-}
-
-.c-chat__textarea {
-    @apply mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
-}
-
-.c-chat__error {
-    @apply text-sm text-red-600;
-}
-
-.c-chat__attachment-container {
-    @apply mt-2 flex items-center;
-}
-
-.c-chat__attach-btn {
-    @apply inline-flex cursor-pointer items-center gap-1.5 text-xs text-neutral-500 transition-colors hover:text-foreground;
-}
-
-.c-chat__attach-icon {
-    @apply size-3.5;
-}
-
-.c-chat__preview-list {
-    @apply mt-2 flex flex-wrap gap-2;
-}
-
-.c-chat__preview-item {
-    @apply relative inline-flex items-center gap-2 rounded border border-neutral-200 bg-neutral-100 p-1.5 pr-8 text-xs dark:border-neutral-700 dark:bg-neutral-800;
-}
-
-.c-chat__preview-name {
-    @apply max-w-[150px] truncate;
-}
-
-.c-chat__preview-remove {
-    @apply absolute top-1.5 right-1.5 cursor-pointer text-[10px] text-neutral-400 hover:text-red-500;
-}
-
-.c-chat__submit-box {
-    @apply flex items-center gap-4;
-}
-
-.c-chat__button {
-    @apply inline-flex items-center rounded-md border border-transparent bg-gray-800 px-4 py-2 text-xs font-semibold tracking-widest text-white uppercase transition duration-150 ease-in-out hover:bg-gray-700 focus:bg-gray-700 focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2 focus:outline-none active:bg-gray-900 dark:bg-gray-200 dark:text-gray-800 dark:hover:bg-white dark:focus:bg-white dark:focus:ring-offset-gray-800 dark:active:bg-gray-300;
-}
-
-/* Lightbox Styling */
-.c-chat__lightbox {
-    @apply fixed inset-0 z-50 flex items-center justify-center bg-black/95 p-4;
-}
-
-.c-chat__lightbox-close {
-    @apply absolute top-6 right-6 cursor-pointer text-3xl text-white transition-colors duration-200 hover:text-red-500;
-}
-
-.c-chat__lightbox-content {
-    @apply max-h-full max-w-full;
-}
-
-.c-chat__lightbox-image {
-    @apply max-h-[90vh] max-w-full rounded object-contain shadow-lg;
-}
-
-.c-chat__lightbox-video {
-    @apply max-h-[90vh] max-w-full rounded shadow-lg;
-}
-</style>
diff --git a/resources/js/components/CreateLedgerForm.vue b/resources/js/components/CreateLedgerForm.vue
index e62b04c..8da6285 100644
--- a/resources/js/components/CreateLedgerForm.vue
+++ b/resources/js/components/CreateLedgerForm.vue
@@ -168,11 +168,15 @@ function submit() {
 }
 
 .c-create-ledger-form__card {
-    @apply overflow-hidden bg-white shadow-sm sm:rounded-lg dark:bg-gray-800;
+    @apply overflow-hidden;
+    background-color: var(--card);
+    border: 1px solid var(--border);
+    border-radius: var(--radius);
 }
 
 .c-create-ledger-form__body {
-    @apply p-6 text-gray-900 dark:text-gray-100;
+    @apply p-6;
+    color: var(--foreground);
 }
 
 .c-create-ledger-form__title {
@@ -188,19 +192,29 @@ function submit() {
 }
 
 .c-create-ledger-form__label {
-    @apply block text-sm font-medium text-gray-700 dark:text-gray-300;
+    @apply block text-sm font-medium;
+    color: var(--foreground);
 }
 
 .c-create-ledger-form__input {
-    @apply mt-1 block w-full rounded-md border border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+    @apply mt-1 block w-full rounded-md border shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+    border-color: var(--border);
+    background-color: var(--background);
+    color: var(--foreground);
 }
 
 .c-create-ledger-form__textarea {
-    @apply mt-1 block w-full rounded-md border border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+    @apply mt-1 block w-full rounded-md border shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+    border-color: var(--border);
+    background-color: var(--background);
+    color: var(--foreground);
 }
 
 .c-create-ledger-form__select {
-    @apply mt-1 block w-full rounded-md border border-gray-300 bg-white p-2 text-sm shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-300 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+    @apply mt-1 block w-full rounded-md border p-2 text-sm shadow-sm focus:border-indigo-500 focus:ring-indigo-500 dark:focus:border-indigo-600 dark:focus:ring-indigo-600;
+    border-color: var(--border);
+    background-color: var(--background);
+    color: var(--foreground);
 }
 
 .c-create-ledger-form__file-input {
diff --git a/resources/js/components/Heading.vue b/resources/js/components/Heading.vue
index 292a72e..dbf88ef 100644
--- a/resources/js/components/Heading.vue
+++ b/resources/js/components/Heading.vue
@@ -20,27 +20,3 @@ withDefaults(defineProps<Props>(), {
         </p>
     </header>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.c-heading {
-    @apply mb-8 space-y-0.5;
-}
-
-.c-heading--small {
-    @apply mb-0 space-y-0;
-}
-
-.c-heading__title {
-    @apply text-xl font-semibold tracking-tight;
-}
-
-.c-heading--small .c-heading__title {
-    @apply mb-0.5 text-base font-medium tracking-normal;
-}
-
-.c-heading__description {
-    @apply text-sm text-muted-foreground;
-}
-</style>
diff --git a/resources/js/components/InputError.vue b/resources/js/components/InputError.vue
index 93b17cc..5ddb9ba 100644
--- a/resources/js/components/InputError.vue
+++ b/resources/js/components/InputError.vue
@@ -11,11 +11,3 @@ defineProps<{
         </p>
     </div>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.c-input-error__message {
-    @apply text-sm text-red-600 dark:text-red-500;
-}
-</style>
diff --git a/resources/js/components/LedgerList.vue b/resources/js/components/LedgerList.vue
index ca79c06..347d412 100644
--- a/resources/js/components/LedgerList.vue
+++ b/resources/js/components/LedgerList.vue
@@ -105,7 +105,8 @@ defineProps<{
 }
 
 .c-ledger-list__title {
-    @apply text-lg font-medium text-gray-900 dark:text-gray-100;
+    @apply text-lg font-medium;
+    color: var(--foreground);
 }
 
 .c-ledger-list__grid {
@@ -113,15 +114,20 @@ defineProps<{
 }
 
 .c-ledger-list__item {
-    @apply border-b border-gray-200 bg-white p-6 dark:border-gray-600 dark:bg-gray-700;
+    @apply p-6;
+    background-color: var(--card);
+    border: 1px solid var(--border);
+    border-radius: var(--radius);
 }
 
 .c-ledger-list__item-name {
     @apply text-lg font-semibold;
+    color: var(--foreground);
 }
 
 .c-ledger-list__item-score {
-    @apply mt-2 text-sm text-gray-600 dark:text-gray-400;
+    @apply mt-2 text-sm;
+    color: var(--muted-foreground);
 }
 
 .c-ledger-list__alignment-wrapper {
diff --git a/resources/js/components/ParticipantsList.vue b/resources/js/components/ParticipantsList.vue
index 9cb7ac4..9c656da 100644
--- a/resources/js/components/ParticipantsList.vue
+++ b/resources/js/components/ParticipantsList.vue
@@ -30,7 +30,8 @@ defineProps<{
 }
 
 .c-participants-list__title {
-    @apply text-lg font-medium text-gray-900 dark:text-gray-100;
+    @apply text-lg font-medium;
+    color: var(--foreground);
 }
 
 .c-participants-list__grid {
@@ -38,6 +39,10 @@ defineProps<{
 }
 
 .c-participants-list__item {
-    @apply overflow-hidden bg-white p-4 shadow-sm sm:rounded-lg dark:bg-gray-800;
+    @apply overflow-hidden p-4;
+    background-color: var(--card);
+    border: 1px solid var(--border);
+    border-radius: var(--radius);
+    color: var(--foreground);
 }
 </style>
diff --git a/resources/js/components/PasswordInput.vue b/resources/js/components/PasswordInput.vue
index ee34350..af4d334 100644
--- a/resources/js/components/PasswordInput.vue
+++ b/resources/js/components/PasswordInput.vue
@@ -40,23 +40,3 @@ defineExpose({
         </button>
     </div>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.password-input {
-    @apply relative;
-}
-
-:deep(.password-input__field) {
-    @apply pr-10;
-}
-
-.password-input__toggle {
-    @apply absolute inset-y-0 right-0 flex items-center rounded-r-md px-3 text-muted-foreground hover:text-foreground focus-visible:ring-[3px] focus-visible:ring-ring focus-visible:outline-none;
-}
-
-.password-input__icon {
-    @apply size-4;
-}
-</style>
diff --git a/resources/js/components/TextLink.vue b/resources/js/components/TextLink.vue
index 0c554d9..3b4e4e9 100644
--- a/resources/js/components/TextLink.vue
+++ b/resources/js/components/TextLink.vue
@@ -23,11 +23,3 @@ defineProps<Props>();
         <slot />
     </Link>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.c-text-link {
-    @apply text-foreground underline decoration-neutral-300 underline-offset-4 transition-colors duration-300 ease-out hover:decoration-current! dark:decoration-neutral-500;
-}
-</style>
diff --git a/resources/js/components/UserInfo.vue b/resources/js/components/UserInfo.vue
index c9a3f2e..38ce681 100644
--- a/resources/js/components/UserInfo.vue
+++ b/resources/js/components/UserInfo.vue
@@ -34,23 +34,3 @@ const showAvatar = computed(
         <span v-if="showEmail" class="user-info__email">{{ user.email }}</span>
     </div>
 </template>
-
-<style scoped>
-@reference "../../css/app.css";
-
-.user-info__avatar {
-    @apply h-8 w-8 overflow-hidden rounded-lg;
-}
-
-.user-info__details {
-    @apply grid flex-1 text-left text-sm leading-tight;
-}
-
-.user-info__name {
-    @apply truncate font-medium;
-}
-
-.user-info__email {
-    @apply truncate text-xs text-muted-foreground;
-}
-</style>
diff --git a/resources/js/layouts/auth/AuthSimpleLayout.vue b/resources/js/layouts/auth/AuthSimpleLayout.vue
index 5de2c37..4bed761 100644
--- a/resources/js/layouts/auth/AuthSimpleLayout.vue
+++ b/resources/js/layouts/auth/AuthSimpleLayout.vue
@@ -32,47 +32,3 @@ defineProps<{
         </div>
     </div>
 </template>
-
-<style scoped>
-@reference "../../../css/app.css";
-
-.auth-layout {
-    @apply flex min-h-svh flex-col items-center justify-center gap-6 bg-background p-6 md:p-10;
-}
-
-.auth-layout__container {
-    @apply w-full max-w-sm;
-}
-
-.auth-layout__inner {
-    @apply flex flex-col gap-8;
-}
-
-.auth-layout__header {
-    @apply flex flex-col items-center gap-4;
-}
-
-.auth-layout__logo-link {
-    @apply flex flex-col items-center gap-2 font-medium;
-}
-
-.auth-layout__logo-box {
-    @apply mb-1 flex h-9 w-9 items-center justify-center rounded-md;
-}
-
-.auth-layout__logo {
-    @apply size-9 fill-current text-[var(--foreground)] dark:text-white;
-}
-
-.auth-layout__title-box {
-    @apply space-y-2 text-center;
-}
-
-.auth-layout__title {
-    @apply text-xl font-medium;
-}
-
-.auth-layout__description {
-    @apply text-center text-sm text-muted-foreground;
-}
-</style>
diff --git a/resources/js/pages/Dynamics/Show.vue b/resources/js/pages/Dynamics/Show.vue
index 2cc1896..12d6531 100644
--- a/resources/js/pages/Dynamics/Show.vue
+++ b/resources/js/pages/Dynamics/Show.vue
@@ -76,11 +76,15 @@ const breadcrumbs = [
 }
 
 .c-dynamic-show__card {
-    @apply overflow-hidden bg-white shadow-sm sm:rounded-lg dark:bg-gray-800;
+    @apply overflow-hidden;
+    background-color: var(--card);
+    border: 1px solid var(--border);
+    border-radius: var(--radius);
 }
 
 .c-dynamic-show__body {
-    @apply p-6 text-gray-900 dark:text-gray-100;
+    @apply p-6;
+    color: var(--foreground);
 }
 
 .c-dynamic-show__title {
diff --git a/resources/js/pages/Ledgers/Show.vue b/resources/js/pages/Ledgers/Show.vue
index a6c51f2..1ef6327 100644
--- a/resources/js/pages/Ledgers/Show.vue
+++ b/resources/js/pages/Ledgers/Show.vue
@@ -250,26 +250,20 @@ function isOwnerUser(userId: number): boolean {
     </div>
 
     <!-- Lightbox Modal -->
-    <div
-        v-if="activeLightboxUrl"
-        class="c-ledger-show__lightbox"
-        @click="closeLightbox"
-    >
-        <button @click="closeLightbox" class="c-ledger-show__lightbox-close">
-            ✕
-        </button>
-        <div class="c-ledger-show__lightbox-content" @click.stop>
+    <div v-if="activeLightboxUrl" class="c-lightbox" @click="closeLightbox">
+        <button @click="closeLightbox" class="c-lightbox__close">✕</button>
+        <div class="c-lightbox__content" @click.stop>
             <img
                 v-if="activeLightboxType === 'image'"
                 :src="activeLightboxUrl"
-                class="c-ledger-show__lightbox-img"
+                class="c-lightbox__image"
             />
             <video
                 v-else-if="activeLightboxType === 'video'"
                 :src="activeLightboxUrl"
                 controls
                 autoplay
-                class="c-ledger-show__lightbox-video"
+                class="c-lightbox__video"
             ></video>
         </div>
     </div>
@@ -361,24 +355,4 @@ function isOwnerUser(userId: number): boolean {
 .c-ledger-show__media-video-overlay {
     @apply absolute inset-0 flex items-center justify-center bg-black/40 text-2xl font-bold text-white;
 }
-
-.c-ledger-show__lightbox {
-    @apply fixed inset-0 z-50 flex items-center justify-center bg-black/95 p-4;
-}
-
-.c-ledger-show__lightbox-close {
-    @apply absolute top-6 right-6 cursor-pointer text-3xl text-white transition-colors duration-200 hover:text-red-500;
-}
-
-.c-ledger-show__lightbox-content {
-    @apply max-h-full max-w-full;
-}
-
-.c-ledger-show__lightbox-img {
-    @apply max-h-[90vh] max-w-full rounded object-contain shadow-lg;
-}
-
-.c-ledger-show__lightbox-video {
-    @apply max-h-[90vh] max-w-full rounded shadow-lg;
-}
 </style>