Add Renderer Scale to Brand Accent

build.ps1

@@ -1,7 +1,7 @@
 # AefComponentTest Docker 이미지 빌드 및 추출 스크립트
 
 $IMAGE_NAME = "aef-component-test"
-$TAG = "0.0.8"
+$TAG = "0.0.9"
 $OUTPUT_FILE = "aef-component-test.tar"
 
 Write-Host "--- Docker 이미지 빌드 시작: ${IMAGE_NAME}:${TAG} ---" -ForegroundColor Cyan

src/app/app.html

@@ -1,5 +1,12 @@
+<skip-links ngSkipHydration>
+  <button (click)="skipToContent()">{{ translation.common.skipToContent }}</button>
+</skip-links>
+
 <header-menu></header-menu>
+
+<main #content>
   <router-outlet />
+</main>
 
 <div id="global-popup-root" class="popup-outlet">
   @for (popup of popupService.activePopups(); track popup.component) {

src/app/app.routes.ts

@@ -2,9 +2,11 @@ import { Routes } from '@angular/router';
 import { MainPage } from './pages/main/main';
 import { KnownIssuesPage } from './pages/known-issues/known-issues';
 import { ClockPage } from './pages/clock/clock';
+import { LevelPage } from './pages/levels/levels';
 
 export const routes: Routes = [
   { path: '', component: MainPage },
   { path: 'known-issues', component: KnownIssuesPage },
   { path: 'clock', component: ClockPage },
+  { path: 'levels', component: LevelPage },
 ];

src/app/app.scss

@@ -0,0 +1,7 @@
+:host {
+  min-height: 100dvh;
+}
+
+main:focus-visible {
+  outline: none;
+}

src/app/app.ts

@@ -1,28 +1,33 @@
-import { Component, inject, effect, PLATFORM_ID } from '@angular/core';
+import { Component, inject, effect, PLATFORM_ID, ElementRef, viewChild } from '@angular/core';
 import { RouterOutlet } from '@angular/router';
 import { HeaderMenu } from './features/header-menu/header-menu';
 import { PopupService } from './services/popup.service';
 import { SettingsService } from './services/settings.service';
 import { NgComponentOutlet, isPlatformBrowser, isPlatformServer, DOCUMENT } from '@angular/common';
+import { SkipLinks } from './components/skip-links/skip-links';
+import { TranslationService } from './services/translation.service';
 
 @Component({
   selector: 'app-root',
-  imports: [RouterOutlet, HeaderMenu, NgComponentOutlet],
+  imports: [RouterOutlet, HeaderMenu, NgComponentOutlet, SkipLinks],
   templateUrl: './app.html',
   styleUrl: './app.scss',
 })
 export class App {
   protected popupService = inject(PopupService);
   protected settingsService = inject(SettingsService);
-  private platformId = inject(PLATFORM_ID);
+  protected translation = inject(TranslationService).translation;
+  private platformID = inject(PLATFORM_ID);
+
+  private contentElement = viewChild<ElementRef<HTMLElement>>("content");
 
   private document = inject(DOCUMENT);
   private rootHtmlElement!: HTMLElement;
 
   constructor() {
-    if (isPlatformServer(this.platformId)) {
+    if (isPlatformServer(this.platformID)) {
       this.rootHtmlElement = this.document.documentElement;
-    } else if (isPlatformBrowser(this.platformId)) {
+    } else if (isPlatformBrowser(this.platformID)) {
       this.rootHtmlElement = document.documentElement;
     }
 
@@ -37,9 +42,22 @@ export class App {
     this.rootHtmlElement.classList.toggle('light-theme', !isDark);
 
     const lang = this.settingsService.language();
-    this.rootHtmlElement.lang = lang.toLowerCase();
+    const langMap: Record<string, string> = {
+      KR: 'ko',
+      JP: 'ja',
+      EN: 'en',
+    };
+    this.rootHtmlElement.lang = langMap[lang] || 'en';
 
     const reduceMotion = this.settingsService.reduceAnimation();
     this.rootHtmlElement.classList.toggle('reduce-motion', reduceMotion);
   }
+
+  skipToContent() {
+    this.contentElement()!.nativeElement.tabIndex = 0;
+    this.contentElement()!.nativeElement.focus();
+
+    // @ts-ignore
+    this.contentElement()!.nativeElement.tabIndex = undefined;
+  }
 }

src/app/components/brand-accent/brand-accent.ts

@@ -1,9 +1,11 @@
 import {
-  afterNextRender, ChangeDetectionStrategy,
+  afterNextRender,
+  ChangeDetectionStrategy,
   Component,
   effect,
   ElementRef,
   inject,
+  input,
   NgZone,
   OnDestroy,
   viewChild,
@@ -24,6 +26,9 @@ export class BrandAccent implements OnDestroy {
   private ctx!: CanvasRenderingContext2D;
   private settingsService = inject(SettingsService);
 
+  drawGrid = input<boolean>(true);
+
+  private bgRendererScale = 1;
   private canvasNativeSize: [number, number] = [0, 0];
   private bgGradient!: CanvasGradient;
   private gridGradient!: CanvasGradient;
@@ -119,8 +124,8 @@ export class BrandAccent implements OnDestroy {
       canvas.height = height * dpr;
 
       if (this.offscreenCanvas) {
-        this.offscreenCanvas.width = width;
-        this.offscreenCanvas.height = height;
+        this.offscreenCanvas.width = width * this.bgRendererScale;
+        this.offscreenCanvas.height = height * this.bgRendererScale;
       }
 
       this.canvasNativeSize = [width, height];
@@ -149,7 +154,12 @@ export class BrandAccent implements OnDestroy {
     if (w === 0 || h === 0) return;
 
     if (!isDark) {
-      this.bgGradient = this.ctx.createLinearGradient(0, 0, w, h);
+      this.bgGradient = this.ctx.createLinearGradient(
+        0,
+        0,
+        w * this.bgRendererScale,
+        h * this.bgRendererScale,
+      );
       this.bgGradient.addColorStop(0, 'oklch(1 0 0 / 0.6)');
       this.bgGradient.addColorStop(1, 'oklch(0.7938 0.1292 47.77 / 0.6)');
     }
@@ -173,15 +183,15 @@ export class BrandAccent implements OnDestroy {
     const h = this.canvasNativeSize[1];
     if (w === 0 || h === 0) return;
 
-    this.offscreenCtx.clearRect(0, 0, w, h);
+    this.offscreenCtx.clearRect(0, 0, w * this.bgRendererScale, h * this.bgRendererScale);
     this.offscreenCtx.globalCompositeOperation = 'source-over';
 
     if (!isDark) {
       this.offscreenCtx.fillStyle = this.bgGradient;
-      this.offscreenCtx.fillRect(0, 0, w, h);
+      this.offscreenCtx.fillRect(0, 0, w * this.bgRendererScale, h * this.bgRendererScale);
     } else {
       this.offscreenCtx.fillStyle = 'oklch(0.1776 0 0)';
-      this.offscreenCtx.fillRect(0, 0, w, h);
+      this.offscreenCtx.fillRect(0, 0, w * this.bgRendererScale, h * this.bgRendererScale);
 
       const ellipseDimension = [Math.max(100, w * 0.9421875), Math.max(200 / 3, h * (203 / 120))];
 
@@ -192,13 +202,17 @@ export class BrandAccent implements OnDestroy {
         Math.min(780, Math.min(ellipseDimension[0], ellipseDimension[1]) * 0.6) /
         this.rendererScale;
 
-      this.offscreenCtx.filter = `blur(${blurScale}px)`;
+      this.offscreenCtx.filter = `blur(${blurScale * this.bgRendererScale}px)`;
 
       this.offscreenCtx.beginPath();
       this.offscreenCtx.ellipse(
-        ellipseX, ellipseY,
-        ellipseDimension[0] / 2, ellipseDimension[1] / 2,
-        0, 0, 2 * Math.PI,
+        ellipseX * this.bgRendererScale,
+        ellipseY * this.bgRendererScale,
+        (ellipseDimension[0] / 2) * this.bgRendererScale,
+        (ellipseDimension[1] / 2) * this.bgRendererScale,
+        0,
+        0,
+        2 * Math.PI,
       );
       this.offscreenCtx.fillStyle = 'oklch(0.2547 0.0913 29.02)';
       this.offscreenCtx.fill();
@@ -230,11 +244,19 @@ export class BrandAccent implements OnDestroy {
       this.ctx.globalCompositeOperation = 'source-over';
 
       this.ctx.imageSmoothingEnabled = false;
-      this.ctx.drawImage(this.offscreenCanvas, 0, 0);
+      this.ctx.drawImage(
+        this.offscreenCanvas,
+        0,
+        0,
+        this.canvasNativeSize[0],
+        this.canvasNativeSize[1],
+      );
 
       // this.ctx.drawImage(this.offscreenCanvas, 0, 0, this.canvasNativeSize[0], this.canvasNativeSize[1]);
     }
 
+    if (!this.drawGrid()) return;
+
     if (!isDark) {
       this.ctx.globalCompositeOperation = 'multiply';
     } else {
@@ -255,7 +277,7 @@ export class BrandAccent implements OnDestroy {
       (this.canvasNativeSize[1] - this.animation.gridDimension[1] * this.animation.gridSquareSize) /
       2;
 
-    const movingOffset = -(this.animation.gridSquareSize * this.animation.progress);
+    const movingOffset = this.settingsService.reduceAnimation() ? 0 : -(this.animation.gridSquareSize * this.animation.progress);
 
     for (let y = 0; y < this.animation.gridDimension[1]; y++) {
       this.ctx.moveTo(

src/app/components/dropdown/dropdown.html

@@ -1,27 +1,34 @@
+<ng-template #inputTemplate>
+  <div #searchInput class="dropdown-input" [class.hidden]="!isOpen()" [class.focus-mode]="inputFocusMode()"
+    contenteditable="true" role="textbox" aria-multiline="false" [aria-placeholder]="placeholder().trim().length > 0 ? placeholder() : translation.common.selectOption" [aria-activedescendant]="ariaActiveDescendant()"
+    [attr.placeholder]="placeholder().trim().length > 0 ? placeholder() : translation.common.selectOption" tabindex="-1" spellcheck="false"
+    (input)="onSearch($event)" (click)="handleInputClick($event)" (mousedown)="handleInputMouseDown()" (beforeinput)="preprocessInputContent($event)"
+    (focus)="onInputFocusIn()" (focusout)="onInputFocusOut()"></div>
+</ng-template>
+
 <div class="dropdown-box">
-  @if (icon()) {
-    <span class="material-symbols-outlined icon-24 prefix-icon">{{ icon() }}</span>
+  @if (icon()?.trim()?.length ?? 0 > 0) {
+    <span class="material-symbols-outlined icon-24 prefix-icon" aria-hidden="true">{{ icon() }}</span>
   }
 
-  @if (isOpen()) {
-    <div #searchInput class="dropdown-input" [class.hidden]="!isOpen()" [class.focus-mode]="inputFocusMode()"
-       contenteditable="true" role="textbox" aria-multiline="false" [aria-placeholder]="translation.common.selectOption"
-       [attr.placeholder]="translation.common.selectOption" tabindex="-1" spellcheck="false"
-       (input)="onSearch($event)" (click)="handleInputClick($event)" (mousedown)="handleInputMouseDown()" (beforeinput)="preprocessInputContent($event)">{{ this.initialInputText() }}</div>
-  } @else {
-    <span class="placeholder">{{ selectedLabel() }}</span>
+  @if (recreateKey() % 2 == 0) {<ng-container [ngTemplateOutlet]="inputTemplate" />}
+  @else {<ng-container [ngTemplateOutlet]="inputTemplate" />}
+
+  @if (!isOpen()) {
+    <span class="placeholder" [class.value-empty]="selectedOption() === undefined">{{ selectedLabel() }}</span>
   }
-  <span class="material-symbols-outlined icon-24 chevron" [class.open]="isOpen()">keyboard_arrow_down</span>
+  <span class="material-symbols-outlined icon-24 chevron" aria-hidden="true" [class.open]="isOpen()">keyboard_arrow_down</span>
 </div>
 
 @if (isOpen()) {
-  <div class="dropdown-container">
-    <ul class="dropdown-list" role="listbox" [id]="dropdownId + '-listbox'">
+  <div class="dropdown-container" tabindex="-1">
+    <ul class="dropdown-list" role="listbox" [id]="dropdownID + '-listbox'" tabindex="-1">
       @for (option of filteredOptions(); track option.value; let i = $index) {
         <li
+          #optionItem
           class="dropdown-item"
           role="option"
-          [id]="dropdownId + '-option-' + i"
+          [id]="dropdownID + '-option-' + i"
           [class.selected]="option.value === value()"
           [class.focused]="i === focusedIndex()"
           [attr.aria-selected]="option.value === value()"

src/app/components/dropdown/dropdown.scss

@@ -39,8 +39,8 @@ $default_animation_duration: 0.2s;
 
   max-width: 100%;
 
-  &:focus-within {
-    outline: 2px solid list.nth(library.$brand_palette, 5);
+  &:has(.dropdown-input.focus-mode:focus-visible) {
+    outline: 2px solid var(--selection-outline-color);
     outline-offset: 2px;
   }
 }
@@ -61,23 +61,24 @@ $default_animation_duration: 0.2s;
 
   .placeholder {
     text-overflow: ellipsis;
+    &.value-empty { opacity: 50%; }
   }
 
-  .dropdown-input:focus-visible {
-    outline: none;
-  }
+  .dropdown-input {
+    cursor: text;
 
-  .dropdown-input:empty:before {
+    &:focus-visible { outline: none; }
+    &:empty:before {
       content: attr(placeholder);
       opacity: 50%;
     }
 
-  .dropdown-input:not(.focus-mode) {
+    &:not(.focus-mode) {
       caret-color: transparent;
       user-select: none;
     }
 
-  .dropdown-input.hidden {
+    &.hidden {
       position: absolute;
 
       width: 0;
@@ -85,9 +86,6 @@ $default_animation_duration: 0.2s;
       opacity: 0;
       visibility: hidden;
     }
-
-  .dropdown-input {
-    cursor: text;
   }
 
   .placeholder, .dropdown-input {
@@ -123,7 +121,7 @@ $default_animation_duration: 0.2s;
   background-color: light-dark(oklch(1 0 0), oklch(0 0 0));
   border-radius: $border_radius;
   z-index: 1000;
-  max-height: 240px;
+  max-height: 200px;
   overflow-y: hidden;
   box-shadow: 0 4px 12px oklch(0 0 0 / 10%); // rgba(0, 0, 0, 0.1)
   animation: slideIn var(--animation-duration) $animation_timing;
@@ -186,7 +184,7 @@ $default_animation_duration: 0.2s;
   padding: 0 16px;
   position: relative;
   align-content: center;
-  transition: --hover-state var(--animation-duration) $animation_timing, --selected-state var(--animation-duration) $animation_timing;
+  transition: --hover-state calc(var(--animation-duration) / 3) $animation_timing, --selected-state calc(var(--animation-duration) / 3) $animation_timing;
   font-size: 16px;
 
   background-color: color-mix(
@@ -197,17 +195,21 @@ $default_animation_duration: 0.2s;
       light-dark($hover_bg, $hover_dark_bg)
       calc(var(--hover-state) * 100%)
     ),
-    light-dark(list.nth(library.$brand_palette, 1), list.nth(library.$brand_palette, 11))
+    light-dark(list.nth(library.$brand_palette, 1), list.nth(library.$brand_palette, 12))
     calc(var(--selected-state) * 100%)
   );
 
+  &.focused {
+    --animation-duration: 0;
+  }
+
   &:hover, &.focused {
     --hover-state: 1;
   }
 
   &.selected {
     --selected-state: 1;
-    color: list.nth(library.$brand_palette, 5);
+    color: light-dark(list.nth(library.$brand_palette, 5), list.nth(library.$brand_palette, 6));
     font-weight: 600;
   }
 }

src/app/components/dropdown/dropdown.ts

@@ -1,19 +1,21 @@
 import {
   Component,
+  computed,
+  effect,
+  ElementRef,
+  HostListener,
+  inject,
   input,
   model,
-  output,
-  signal,
-  HostListener,
-  ElementRef,
-  computed,
   OnInit,
-  inject,
-  effect,
-  viewChild,
+  output,
+  PLATFORM_ID,
+  signal,
   untracked,
+  viewChild,
+  viewChildren
 } from '@angular/core';
-import { CommonModule } from '@angular/common';
+import { CommonModule, isPlatformBrowser } from '@angular/common';
 import { TranslationService } from '../../services/translation.service';
 
 export interface DropdownOption {
@@ -31,14 +33,13 @@ export interface DropdownOption {
     role: 'combobox',
     'aria-haspopup': 'listbox',
     '[attr.aria-expanded]': 'isOpen()',
-    '[attr.aria-controls]': "isOpen() ? dropdownId + '-listbox' : null",
-    '[attr.aria-activedescendant]':
-      "isOpen() && focusedIndex() >= 0 ? dropdownId + '-option-' + focusedIndex() : null",
+    '[attr.aria-controls]': "isOpen() ? dropdownID + '-listbox' : null",
+    '[attr.aria-activedescendant]': 'ariaActiveDescendant()',
     '[attr.aria-label]': 'ariaLabel()',
     '[class.open]': 'isOpen()',
     tabindex: '0',
     '(click)': 'toggle()',
-    '(focus)': 'onFocus()',
+    '(focusin)': 'onFocusIn($event)',
     '(mousedown)': 'onMouseDown($event)',
     '(keydown)': 'onKeyDown($event)',
     '(keydown.enter)': 'onEnter($event)',
@@ -50,10 +51,12 @@ export interface DropdownOption {
 })
 export class Dropdown implements OnInit {
   translation = inject(TranslationService).translation;
+  private platformId = inject(PLATFORM_ID);
   searchInput = viewChild<ElementRef<HTMLElement>>('searchInput');
+  optionItems = viewChildren<ElementRef<HTMLElement>>('optionItem');
 
   options = input<Array<DropdownOption | string>>([]);
-  placeholder = input<string>('Select an option');
+  placeholder = input<string>('');
   ariaLabel = input<string | undefined>(undefined);
   icon = input<string>();
   defaultIndex = input<number>();
@@ -64,21 +67,47 @@ export class Dropdown implements OnInit {
   inputFocusMode = signal(false);
   focusedIndex = signal(-1);
   searchQuery = signal('');
+  recreateKey = signal(0);
 
-  private static nextId = 0;
+  ariaActiveDescendant = computed(() => {
+    return this.isOpen() && this.focusedIndex() >= 0
+      ? this.dropdownID + '-option-' + this.focusedIndex()
+      : null;
+  });
+
+  private static nextID = 0;
   private isLatestMouseDownInsideInput = false;
-  dropdownId = `dropdown-${Dropdown.nextId++}`;
+  dropdownID = `dropdown-${Dropdown.nextID++}`;
   private isLatestMouseDownInsideContainer = false;
 
   constructor(private element: ElementRef) {
     effect(() => this.filteredOptions());
 
+    effect(() => {
+      const index = this.focusedIndex();
+      const isDropdownOpen = this.isOpen();
+
+      if (isDropdownOpen && index >= 0) {
+        requestAnimationFrame(() => {
+          this.scrollToIndex(index);
+        });
+      }
+    });
+
     effect(() => {
       const isDropdownOpen = this.isOpen();
 
       if (!isDropdownOpen) {
         if (untracked(this.inputFocusMode)) this.inputFocusMode.set(false);
         this.searchQuery.set('');
+
+        const input = this.searchInput();
+        if (isPlatformBrowser(this.platformId) && input) {
+          let currentValue = untracked(this.normalizedOptions).find(
+            (o) => o.value === this.value(),
+          );
+          if (currentValue) input.nativeElement.innerText = currentValue.label;
+        }
       }
     });
   }
@@ -93,6 +122,17 @@ export class Dropdown implements OnInit {
     }
   }
 
+  private scrollToIndex(index: number) {
+    if (!isPlatformBrowser(this.platformId)) return;
+
+    const items = this.optionItems();
+    if (items[index]) {
+      items[index].nativeElement.scrollIntoView({
+        block: 'nearest',
+      });
+    }
+  }
+
   normalizedOptions = computed(() => {
     return this.options().map((opt) => {
       if (typeof opt === 'string') {
@@ -112,41 +152,51 @@ export class Dropdown implements OnInit {
     return opts.filter((o) => o.label.toLowerCase().normalize('NFKD').includes(query));
   });
 
-  initialInputText = computed<string>(() => {
-    let currentValue = this.normalizedOptions().find((o) => o.value === this.value())?.label;
-    return currentValue ? currentValue : "";
-  })
-
   toggle() {
     if (this.isLatestMouseDownInsideInput) {
       this.isLatestMouseDownInsideInput = false;
       return;
     }
 
-    this.isOpen.update((v) => !v);
     if (this.isOpen()) {
+      this.close();
+    } else {
+      this.isOpen.set(true);
       this.searchQuery.set('');
-
-      const currentIndex = this.normalizedOptions().findIndex((o) => o.value === this.value());
-      this.focusedIndex.set(currentIndex);
+      this.focusedIndex.set(this.normalizedOptions().findIndex((o) => o.value === this.value()));
 
       setTimeout(() => {
-        const searchInputElement = this.searchInput()!.nativeElement;
+        let wasFocusVisible = this.element.nativeElement.matches(':focus-visible');
+        this.focusSearchInput();
 
-        searchInputElement.focus();
-        this.setCursorToEnd(searchInputElement);
+        if (wasFocusVisible) this.inputFocusMode.set(true);
       }, 0);
     }
   }
 
-  onFocus() {
+  onInputFocusIn() {
+    if (this.isOpen()) this.element.nativeElement.tabIndex = -1;
+  }
+
+  onInputFocusOut() {
+    if (this.isOpen()) this.element.nativeElement.tabIndex = undefined;
+  }
+
+  onFocusIn(event: FocusEvent) {
+    if (this.element.nativeElement.contains(event.relatedTarget)) return;
+
     if (this.isOpen()) {
+      this.focusSearchInput();
+      this.inputFocusMode.set(true);
+    }
+  }
+
+  private focusSearchInput() {
     const searchInputElement = this.searchInput()!.nativeElement;
 
     searchInputElement.focus();
     this.setCursorToEnd(searchInputElement);
   }
-  }
 
   private checkIfInputFocus(event: Event) {
     let triggerInputFocus = this.searchInput()!.nativeElement.contains(
@@ -156,7 +206,14 @@ export class Dropdown implements OnInit {
   }
 
   close() {
+    const isFocusInside = this.element.nativeElement.contains(document.activeElement);
+    const isDropdownOpen = this.isOpen();
+
     this.isOpen.set(false);
+    if (isFocusInside) this.element.nativeElement.focus({ preventScroll: true });
+    if (isDropdownOpen) this.recreateKey.update((v) => (v + 1) % 65536);
+
+    this.element.nativeElement.tabIndex = undefined;
     this.focusedIndex.set(-1);
   }
 
@@ -193,6 +250,8 @@ export class Dropdown implements OnInit {
 
   onArrowDown(event: Event) {
     event.preventDefault();
+    if (!this.inputFocusMode()) this.inputFocusMode.set(true);
+
     if (!this.isOpen()) {
       this.toggle();
       return;
@@ -209,6 +268,8 @@ export class Dropdown implements OnInit {
 
   onArrowUp(event: Event) {
     event.preventDefault();
+    if (!this.inputFocusMode()) this.inputFocusMode.set(true);
+
     if (!this.isOpen()) {
       this.toggle();
       return;
@@ -248,7 +309,8 @@ export class Dropdown implements OnInit {
   onDocumentClick(event: MouseEvent) {
     if (
       !this.element.nativeElement.contains(event.target) &&
-      !this.isLatestMouseDownInsideContainer
+      !this.isLatestMouseDownInsideContainer &&
+      this.isOpen()
     ) {
       this.close();
     }
@@ -290,8 +352,12 @@ export class Dropdown implements OnInit {
     }
   }
 
+  selectedOption = computed(() => {
+    return this.normalizedOptions().find((o) => o.value === this.value());
+  })
+
   selectedLabel = computed(() => {
-    const selected = this.normalizedOptions().find((o) => o.value === this.value());
+    const selected = this.selectedOption();
     return selected ? selected.label : this.placeholder();
   });
 

src/app/components/level-card/level-card.html

@@ -0,0 +1,22 @@
+<section class="information">
+  <div class="soundtrack">
+    <span class="artist">{{ artist() }}</span>
+    <span class="track-name">{{ trackName() }}</span>
+  </div>
+
+  <div class="other">
+    <div class="creator">
+      <span>by</span>
+      <span>{{ creatorString() }}</span>
+    </div>
+  </div>
+</section>
+
+<section class="buttons">
+  <button [aria-label]="previewButtonLabel()">
+    <div class="material-symbols-outlined icon-40 button-icon">play_arrow</div>
+  </button>
+  <button [aria-label]="downloadButtonLabel()">
+    <div class="material-symbols-outlined icon-40 button-icon">download</div>
+  </button>
+</section>

src/app/components/level-card/level-card.scss

@@ -0,0 +1,162 @@
+$animation_timing: cubic-bezier(0.4, 0, 0.2, 1);
+$default_animation_duration: 0.2s;
+
+@property --hover-state {
+  syntax: '<number>';
+  inherits: false;
+  initial-value: 0;
+}
+
+:host {
+  width: 100%;
+  max-width: 400px;
+  height: 160px;
+
+  display: flex;
+  flex-direction: row;
+
+  --animation-duration: calc(#{$default_animation_duration} * var(--motion-duration-multiplier));
+  justify-content: space-between;
+
+  border-radius: 8px;
+  outline: light-dark(oklch(0 0 0 / 20%), oklch(1 0 0 / 20%)) 2px solid;
+  // overflow: hidden;
+
+  &:focus-visible {
+    outline-offset: 0;
+    outline: 2px solid var(--selection-outline-color);
+  }
+
+  section.information {
+    width: calc(100% - 64px);
+    padding: 12px;
+    box-sizing: border-box;
+    flex-shrink: 0;
+
+    z-index: 1;
+    background-color: light-dark(white, black);
+
+    border-top-left-radius: 8px;
+    border-bottom-left-radius: 8px;
+    // outline: light-dark(oklch(0 0 0 / 20%), oklch(1 0 0 / 20%)) 1px solid;
+
+    .soundtrack {
+      display: flex;
+      flex-direction: column;
+      gap: 4px;
+
+      .artist {
+        display: inline-block;
+        font-size: 14px;
+        height: 20px;
+        align-content: center;
+        font-weight: 700;
+
+        white-space: nowrap;
+        word-wrap: break-word;
+        overflow: hidden;
+        text-overflow: ellipsis;
+      }
+
+      .track-name {
+        display: -webkit-box;
+        -webkit-box-orient: vertical;
+        -webkit-line-clamp: 2;
+        align-self: stretch;
+
+        overflow: hidden;
+        text-overflow: ellipsis;
+        word-wrap: break-word;
+        font-size: 18px;
+        font-weight: 900;
+        line-height: 22px;
+        height: 44px;
+      }
+    }
+
+    .other {
+      display: flex;
+      width: 312px;
+      height: 68px;
+      padding: 3px 0;
+      flex-direction: column;
+      box-sizing: border-box;
+      justify-content: space-between;
+      align-items: flex-start;
+
+      .creator {
+        display: flex;
+        flex-direction: row;
+        font-size: 14px;
+        height: 20px;
+        gap: 3px;
+
+        span {
+          align-content: center;
+          &:nth-child(2) {
+            font-weight: 700;
+          }
+        }
+      }
+    }
+  }
+
+  section.buttons {
+    display: flex;
+    flex-direction: column;
+
+    align-self: stretch;
+    flex-shrink: 0;
+
+    flex-grow: 1;
+    margin-left: 0;
+
+    button {
+      display: flex;
+      flex-direction: row;
+      justify-content: flex-end;
+      align-items: center;
+      z-index: 10;
+
+      width: 100%;
+      height: 50%;
+      border: none;
+      transition: --hover-state calc(var(--animation-duration) / 3) $animation_timing;
+      background-color: color-mix(
+        in oklch,
+        light-dark(oklch(1 0 0), oklch(0 0 0)),
+        light-dark(oklch(0.9702 0 0), oklch(0.25 0 0))
+        calc(var(--hover-state) * 100%)
+      );
+
+      padding: 0;
+      &:hover {
+        --hover-state: 1;
+      }
+
+      &:not(:focus-visible) {
+        box-shadow: -1px 0 0 0 light-dark(oklch(0 0 0 / 20%), oklch(1 0 0 / 20%));
+      }
+
+      &:focus-visible {
+        z-index: 11;
+        outline-offset: 0;
+      }
+
+      div.button-icon {
+        width: 40px;
+        height: 40px;
+        margin-right: 12px;
+        user-select: none;
+      }
+
+      &:first-child {
+        border-top-right-radius: 8px;
+      }
+
+      &:last-child {
+        border-bottom-right-radius: 8px;
+      }
+    }
+  }
+}

src/app/components/level-card/level-card.ts

@@ -0,0 +1,35 @@
+import { Component, computed, inject, input } from '@angular/core';
+import { TranslationService } from '../../services/translation.service';
+
+@Component({
+  selector: 'level-card',
+  imports: [],
+  templateUrl: './level-card.html',
+  styleUrl: './level-card.scss',
+  host: {
+    role: 'article',
+  },
+})
+export class LevelCard {
+  private translationSvc = inject(TranslationService);
+  protected translation = this.translationSvc.translation;
+
+  artist = input.required<string>();
+  trackName = input.required<string>();
+  creator = input<string[]>([]);
+
+  creatorString = computed(() => this.creator().join(' & '));
+
+  previewButtonLabel = computed(() =>
+    this.translationSvc.interpolate(this.translation.levelCard.preview, {
+      artist: this.artist(),
+      trackName: this.trackName(),
+    }),
+  );
+
+  downloadButtonLabel = computed(() =>
+    this.translationSvc.interpolate(this.translation.levelCard.download, {
+      creator: this.creatorString()
+    }),
+  );
+}

src/app/components/popup/popup.html

@@ -1,5 +1,5 @@
 <div class="popup-backdrop" [class.center]="isCenter" (click)="$event.target === $event.currentTarget && onClose()">
-  <div class="popup-container"
+  <div #popupContainer class="popup-container"
        [class]="'variant-' + variant()"
        [class.custom-pos]="!isCenter"
        [style.top]="customStyle.top"
@@ -12,7 +12,7 @@
       </div>
 
       <div class="header-right">
-        <button class="material-symbols-outlined icon-24 close-btn" (click)="onClose()">close</button>
+        <button class="material-symbols-outlined icon-24 close-btn" (click)="onClose()" [aria-label]="closeButtonLabel()">close</button>
       </div>
     </header>
 

src/app/components/popup/popup.scss

@@ -37,7 +37,7 @@ $default_animation_duration: 0.2s;
   animation: popup-enter var(--animation-duration) $animation_timing;
 
   outline: light-dark(oklch(0 0 0 / 20%), oklch(1 0 0 / 20%)) 2px solid;
-  gap: 16px;
+  gap: 12px;
 
   &.variant-glass {
     background-color: light-dark(oklch(1 0 0 / 60%), oklch(0 0 0 / 60%));
@@ -52,6 +52,11 @@ $default_animation_duration: 0.2s;
   &.custom-pos {
     position: absolute;
   }
+
+  &:focus-visible {
+    outline-offset: 0;
+    outline: 2px solid var(--selection-outline-color);
+  }
 }
 
 @keyframes popup-enter {

src/app/components/popup/popup.ts

@@ -1,4 +1,15 @@
-import { Component, input, output, HostListener } from '@angular/core';
+import {
+  Component,
+  input,
+  output,
+  HostListener,
+  ElementRef,
+  inject,
+  viewChild,
+  OnInit,
+  OnDestroy,
+} from '@angular/core';
+import { TranslationService } from '../../services/translation.service';
 
 export type PopupPosition = {
   top?: string;
@@ -15,12 +26,16 @@ export type PopupVariant = 'glass' | 'solid';
   templateUrl: './popup.html',
   styleUrl: './popup.scss',
   host: {
-    'role': 'dialog',
+    role: 'dialog',
     'aria-modal': 'true',
-    'tabindex': '-1'
-  }
+    tabindex: '-1',
+  },
 })
-export class PopupComponent {
+export class PopupComponent implements OnInit, OnDestroy {
+  private translation = inject(TranslationService).translation;
+  popupContainer = viewChild<ElementRef<HTMLElement>>('popupContainer');
+  private previouslyFocusedElement: HTMLElement | null = null;
+
   /**
    * 팝업의 위치 (기본값은 'center')
    * 'center' 또는 { top, left, right, bottom } 객체를 받습니다.
@@ -32,14 +47,102 @@ export class PopupComponent {
    */
   variant = input<PopupVariant>('glass');
 
+  /**
+   * 팝업 닫기 버튼의 aria-label (기본값은 번역의 'close')
+   */
+  closeButtonLabel = input<string>(this.translation.common.close);
+
   /**
    * 팝업 닫기 요청 (배경 클릭 또는 닫기 버튼)
    */
   closeRequest = output<void>();
 
-  @HostListener('document:keydown.escape')
-  onKeydownHandler() {
-    this.onClose();
+  constructor(private element: ElementRef) {}
+
+  ngOnInit() {
+    if (typeof document !== 'undefined') {
+      this.previouslyFocusedElement = document.activeElement as HTMLElement;
+    }
+
+    setTimeout(() => {
+      this.element.nativeElement.focus();
+
+      this.popupContainer()!.nativeElement.tabIndex = 0;
+      this.popupContainer()!.nativeElement.focus();
+    }, 0);
+  }
+
+  ngOnDestroy() {
+    if (
+      this.previouslyFocusedElement &&
+      typeof this.previouslyFocusedElement.focus === 'function'
+    ) {
+      this.previouslyFocusedElement.focus();
+    }
+  }
+
+  @HostListener('keydown', ['$event'])
+  onKeydownHandler(event: KeyboardEvent) {
+    if (event.key === 'Tab') this.handleTabKey(event);
+    if (event.key === 'Escape') this.onClose();
+  }
+
+  private handleTabKey(event: KeyboardEvent) {
+    const focusableElements = this.getOrderedFocusableElements(this.popupContainer()!.nativeElement);
+
+    if (focusableElements.length === 0) {
+      event.preventDefault();
+      return;
+    }
+
+    const firstElement = focusableElements[0] as HTMLElement;
+    const lastElement = focusableElements[focusableElements.length - 1] as HTMLElement;
+    const activeElement = document.activeElement;
+
+    if (event.shiftKey) {
+      // If Shift + Tab and focus is on the first element (or the container), move to the last element
+      if (
+        activeElement === firstElement ||
+        activeElement === this.popupContainer()!.nativeElement
+      ) {
+        lastElement.focus();
+        event.preventDefault();
+      }
+    } else {
+      // If Tab and focus is on the last element, move to the first element
+      if (activeElement === lastElement) {
+        firstElement.focus();
+        event.preventDefault();
+      }
+    }
+  }
+
+  getOrderedFocusableElements(container: HTMLElement) {
+    const selector = 'button, [href], input, select, textarea, [tabindex]';
+
+    const elements = Array.from(container.querySelectorAll(selector)).filter((el) => {
+      const htmlEl = el as HTMLElement;
+
+      // 비활성 상태거나 tabindex가 -1이면 제외
+      if ((htmlEl as HTMLInputElement).disabled || el.getAttribute('tabindex') === '-1')
+        return false;
+      // 화면에 보이지 않는 요소 제외 (필요 시 추가)
+      return !!(htmlEl.offsetWidth || htmlEl.offsetHeight || el.getClientRects().length);
+    });
+
+    return elements.sort((a, b) => {
+      const tabA = parseInt(a.getAttribute('tabindex') ?? '0', 10);
+      const tabB = parseInt(b.getAttribute('tabindex') ?? '0', 10);
+
+      // 1. 양수 tabindex 처리 (낮은 숫자 우선)
+      if (tabA > 0 && tabB > 0) return tabA - tabB;
+      if (tabA > 0) return -1;
+      if (tabB > 0) return 1;
+
+      // 2. 나머지는(0 또는 기본값) DOM 순서 유지
+      // querySelectorAll 결과가 이미 DOM 순서이므로 0 반환으로 충분
+      return 0;
+    });
   }
 
   onClose() {

src/app/components/skip-links/skip-links.html

@@ -0,0 +1 @@
+<ng-content></ng-content>

src/app/components/skip-links/skip-links.scss

@@ -0,0 +1,67 @@
+$default_animation_duration: 0.4s;
+
+:host {
+  display: flex;
+  position: fixed;
+
+  align-items: center;
+  justify-content: center;
+
+  top: -140px;
+  left: 20px;
+
+  --animation-duration: calc(#{$default_animation_duration} * var(--motion-duration-multiplier));
+
+  background: light-dark(rgba(255, 255, 255, 0.9), rgba(15, 15, 15, 0.9));
+  padding: calc(40px + 12px) 24px 12px;
+  z-index: 20000;
+
+  transition: top var(--animation-duration) cubic-bezier(0.18, 0.89, 0.32, 1.28);
+  border-radius: 0 0 12px 12px;
+
+  box-shadow: 0 0 40px oklch(0 0 0 / 15%);
+  vertical-align: middle;
+  font-weight: 700;
+  font-size: 18px;
+  height: 40px;
+
+  &:focus-within {
+    top: -40px;
+    outline: 2px solid var(--selection-outline-color);
+
+    ::ng-deep * {
+      // 내부에서 탭 이동 시에는 지연 없이 즉시 전환되도록 합니다.
+      transition: none;
+    }
+  }
+
+  ::ng-deep * {
+    appearance: none;
+    color: light-dark(black, white);
+    text-decoration: none;
+    background: none;
+    font: inherit;
+
+    border: none;
+    outline: none;
+    min-width: unset;
+    min-height: unset;
+    padding: 0;
+    margin: 0;
+    width: 0;
+
+    opacity: 0;
+    overflow: hidden;
+
+    // Component에서 포커스가 나갈 때(애니메이션 중) 마지막 포커스된 요소가 유지되도록 지연 시간을 둡니다.
+    transition: opacity 0s var(--animation-duration), width 0s var(--animation-duration);
+    interpolate-size: allow-keywords;
+
+    &:focus {
+      width: auto;
+      opacity: 1;
+
+      transition: none;
+    }
+  }
+}

src/app/components/skip-links/skip-links.ts

@@ -0,0 +1,12 @@
+import { Component } from '@angular/core';
+
+@Component({
+  selector: 'skip-links',
+  imports: [],
+  templateUrl: './skip-links.html',
+  styleUrl: './skip-links.scss',
+  host: {
+    'tabindex': '-1',
+  }
+})
+export class SkipLinks {}

src/app/components/switch/switch.scss

@@ -30,14 +30,14 @@ $default_animation_duration: 0.2s;
   background-color: color-mix(
     in oklch,
     light-dark($off_bg, $off_dark_bg),
-    light-dark(list.nth(library.$brand_palette, 5), list.nth(library.$brand_palette, 8))
+    light-dark(list.nth(library.$brand_palette, 5), list.nth(library.$brand_palette, 6))
     calc(var(--animation-state) * 100%)
   );
 
   box-shadow: 0 0 0 1px color-mix(
     in oklch,
     light-dark($border_color, $border_dark_color),
-    light-dark($border_color, list.nth(library.$brand_palette, 10))
+    light-dark($border_color, list.nth(library.$brand_palette, 9))
     calc(var(--animation-state) * 100%)
   ) inset;
 

src/app/features/header-menu/header-menu.html

@@ -1,21 +1,29 @@
-<div class="menu-left">
+<div #menuLeft class="menu-left">
   <a class="brand" [routerLink]="['/']">
     <img [src]="settings.darkMode() ? '/logo.svg' : '/logo_inverted.svg'" alt="logo" height="20" width="59.52" />
-    <span #brandText [class.hidden]="!hasExtraSpace()">
+    <span #brandText [class.hidden]="expandStage() < 2">
       <strong>ADOFAI Editor Forum</strong>
     </span>
   </a>
 
-  <span class="menu-item dummy-link">{{ translation.menu.levels }}</span>
+  <div #leftMenuItems [class.hidden]="expandStage() < 1" [attr.inert]="expandStage() < 1 ? '' : null" class="menu-items">
+    <a class="menu-item nav-link" [routerLink]="['/levels']">{{ translation.menu.levels }}</a>
     <span class="menu-item dummy-link">{{ translation.menu.community }}</span>
     <span class="menu-item dummy-link">{{ translation.menu.leaderboard }}</span>
     <span class="menu-item dummy-link">{{ translation.menu.about }}</span>
   </div>
+</div>
 
-<div class="menu-right" #menuRight>
+<div #menuRight class="menu-right">
+  <div #rightMenuItems [class.hidden]="expandStage() < 1" [attr.inert]="expandStage() < 1 ? '' : null" class="menu-items">
     <a class="menu-item nav-link" [routerLink]="['/known-issues']">{{ translation.menu.knownIssues }}</a>
     <span class="menu-item dummy-link"><strong>{{ translation.menu.login }}</strong></span>
     <span class="menu-item dummy-link">{{ translation.menu.signup }}</span>
+  </div>
+
+  <button type="button" [class.hidden]="expandStage() > 0" [attr.inert]="expandStage() > 0 ? '' : null" class="material-symbols-outlined icon-40 menu" (click)="onHamburgerClick()" [attr.aria-label]="translation.menu.menu">
+    menu
+  </button>
 
   <button type="button" class="material-symbols-outlined icon-40 settings" (click)="onSettingsClick()" [attr.aria-label]="translation.settings.title">
     settings

src/app/features/header-menu/header-menu.scss

@@ -4,11 +4,12 @@
   display: flex;
   flex-direction: row;
   align-items: center;
-  justify-content: start;
+  justify-content: space-between;
   gap: 0;
 
   width: fit-content;
   min-width: 100%;
+  height: 64px;
 
   box-sizing: border-box;
   box-shadow: 0 2px 0 light-dark(oklch(0 0 0 / 20%), oklch(1 0 0 / 20%));
@@ -26,11 +27,24 @@
     align-items: center;
     gap: 48px;
 
+    .menu-items {
+      display: flex;
+      flex-direction: row;
+      align-items: center;
+      gap: 48px;
+
+      &.hidden {
+        position: absolute;
+        top: -100000px;
+        pointer-events: none;
+      }
+    }
+
     & > * {
       user-select: none;
     }
 
-    .menu-item, a:not(.settings) {
+    .menu-item, a {
       text-decoration: none;
       font-size: 18px;
       height: 40px;
@@ -42,10 +56,11 @@
       cursor: pointer;
       display: flex;
       align-items: center;
+      border-radius: 4px;
 
       &.nav-link {
         font-weight: 700;
-        color: oklch(0.5 0.15 250);
+        color: oklch(0.6 0.15 250);
         transition: opacity 0.3s;
 
         &:hover {
@@ -62,7 +77,7 @@
       }
     }
 
-    .settings {
+    .settings, .menu {
       border: none;
       border-radius: 100%;
       background-color: inherit;
@@ -71,6 +86,9 @@
       position: relative;
       z-index: 10;
       cursor: pointer;
+    }
+
+    .settings {
       transition: transform 0.3s ease;
 
       &:hover {
@@ -78,6 +96,14 @@
       }
     }
 
+    .menu {
+      &.hidden {
+        position: absolute;
+        top: -100000px;
+        pointer-events: none;
+      }
+    }
+
     /* 구체적인 아이콘 예외 처리 */
     .icon-40 {
       height: auto;
@@ -85,6 +111,9 @@
   }
 
   .menu-left {
+    position: absolute;
+    left: 0;
+
     justify-content: start;
     padding: 12px;
 
@@ -104,7 +133,7 @@
       img {
         display: inline-block;
         height: 20px;
-        padding: 10px 10px 10px 0;
+        padding: 10px 0;
       }
 
       strong {
@@ -113,9 +142,11 @@
 
       span {
         display: inline-block;
+        padding-left: 10px;
 
         &.hidden {
-          display: none;
+          position: absolute;
+          top: -100000px;
           pointer-events: none;
         }
       }
@@ -123,8 +154,10 @@
   }
 
   .menu-right {
-    flex-grow: 1;
+    position: absolute;
+    right: 0;
+
     justify-content: flex-end;
-    padding: 12px 20px;
+    padding: 12px 20px 12px 12px;
   }
 }

src/app/features/header-menu/header-menu.ts

@@ -2,6 +2,7 @@ import {
   afterNextRender,
   ChangeDetectionStrategy,
   Component,
+  effect,
   ElementRef,
   inject,
   NgZone,
@@ -12,6 +13,7 @@ import {
 import { RouterLink } from '@angular/router';
 import { PopupService } from '../../services/popup.service';
 import { SettingsPopup } from '../settings/settings';
+import { NavigationMenu } from './navigation-menu';
 import { TranslationService } from '../../services/translation.service';
 import { SettingsService } from '../../services/settings.service';
 
@@ -21,101 +23,140 @@ import { SettingsService } from '../../services/settings.service';
   templateUrl: './header-menu.html',
   styleUrl: './header-menu.scss',
   changeDetection: ChangeDetectionStrategy.OnPush,
+  host: {
+    '[class.folded-menu]': 'expandStage() < 1',
+  },
 })
 export class HeaderMenu implements OnDestroy {
   private popupService = inject(PopupService);
   protected translation = inject(TranslationService).translation;
   protected settings = inject(SettingsService);
 
-  menuRight = viewChild<ElementRef<HTMLElement>>('menuRight');
-  brandText = viewChild<ElementRef<HTMLElement>>('brandText');
+  private static readonly LOGICAL_GAP = 24;
 
-  hasExtraSpace = signal(true);
+  private resizeObserver?: ResizeObserver;
+  private brandTextObserver?: ResizeObserver;
+  private menuItemsObserver?: ResizeObserver;
+  private menuWidth: number = 99999;
 
-  private menuResizeObserver: ResizeObserver | null = null;
-  private textResizeObserver: ResizeObserver | null = null;
+  private menuLeft = viewChild<ElementRef<HTMLElement>>('menuLeft');
+  private leftMenuItems = viewChild<ElementRef<HTMLElement>>('leftMenuItems');
+  private menuLeftWidth: number = 0;
+  private leftMenuItemsWidth: number = 0;
 
-  private childWidths = new Map<Element, number>();
-  private cachedTextWidth = 0;
-  private cachedRightMenuContentWidth = 0;
+  private menuRight = viewChild<ElementRef<HTMLElement>>('menuRight');
+  private rightMenuItems = viewChild<ElementRef<HTMLElement>>('rightMenuItems');
+  private menuRightWidth: number = 0;
+  private rightMenuItemsWidth: number = 0;
+
+  private brandText = viewChild<ElementRef<HTMLElement>>('brandText');
+  private brandTextWidth: number = 0;
+
+  expandStage = signal(2);
+
+  constructor(
+    private element: ElementRef,
+    private ngZone: NgZone,
+  ) {
+    effect(() => {
+      if (this.expandStage() > 0) {
+        this.popupService.close(NavigationMenu);
+      }
+    });
 
-  constructor(private ngZone: NgZone) {
     afterNextRender(() => {
-      const rightElement = this.menuRight()?.nativeElement;
-      const textElement = this.brandText()?.nativeElement;
-      if (!rightElement || !textElement) return;
-
       this.ngZone.runOutsideAngular(() => {
-        // 1. Right Menu & Children Observer
-        this.menuResizeObserver = new ResizeObserver((entries) => {
-          let containerWidth = -1;
-          let contentChanged = false;
-
-          for (const entry of entries) {
-            if (entry.target === rightElement) {
-              containerWidth = entry.borderBoxSize[0].inlineSize;
-              continue;
-            }
-
+        this.resizeObserver = new ResizeObserver((entries) => {
+          for (let entry of entries) {
             const width = entry.borderBoxSize[0].inlineSize;
-            if (this.childWidths.get(entry.target) !== width) {
-              this.childWidths.set(entry.target, width);
-              contentChanged = true;
+            if (width > 0)
+              switch (entry.target) {
+                case element.nativeElement:
+                  this.menuWidth = width;
+                  break;
+                case this.menuLeft()!.nativeElement:
+                  this.menuLeftWidth = width;
+                  break;
+                case this.menuRight()!.nativeElement:
+                  this.menuRightWidth = width;
+                  break;
               }
           }
 
-          if (contentChanged) this.updateCachedRightMenuContentWidth();
-          if (containerWidth !== -1) this.resize(containerWidth);
+          this.updateExpandStatus();
         });
 
-        this.menuResizeObserver.observe(rightElement);
-        Array.from(rightElement.children).forEach((child) => {
-          this.childWidths.set(child, (child as HTMLElement).offsetWidth);
-          this.menuResizeObserver?.observe(child);
+        this.menuItemsObserver = new ResizeObserver((entries) => {
+          for (let entry of entries) {
+            const width = entry.borderBoxSize[0].inlineSize;
+            if (width > 0)
+              switch (entry.target) {
+                case this.leftMenuItems()!.nativeElement:
+                  this.leftMenuItemsWidth = width;
+                  break;
+                case this.rightMenuItems()!.nativeElement:
+                  this.rightMenuItemsWidth = width;
+                  break;
+              }
+          }
+
+          this.updateExpandStatus();
         });
 
-        // 2. Brand Text Observer
-        this.textResizeObserver = new ResizeObserver((entries) => {
+        this.resizeObserver.observe(element.nativeElement);
+        this.resizeObserver.observe(this.menuLeft()!.nativeElement);
+        this.resizeObserver.observe(this.menuRight()!.nativeElement);
+
+        this.menuItemsObserver.observe(this.leftMenuItems()!.nativeElement);
+        this.menuItemsObserver.observe(this.rightMenuItems()!.nativeElement);
+
+        this.brandTextObserver = new ResizeObserver((entries) => {
           const width = entries[0].borderBoxSize[0].inlineSize;
-          if (width > 0) this.cachedTextWidth = width;
+          if (width > 0) this.brandTextWidth = width;
+
+          this.updateExpandStatus();
         });
 
-        this.textResizeObserver.observe(textElement);
-
-        // Initial calculation
-        this.cachedTextWidth = textElement.offsetWidth;
-        this.updateCachedRightMenuContentWidth();
-        this.resize(rightElement.offsetWidth);
+        this.brandTextObserver.observe(this.brandText()!.nativeElement);
       });
     });
   }
 
   ngOnDestroy() {
-    this.menuResizeObserver?.disconnect();
-    this.textResizeObserver?.disconnect();
-    this.childWidths.clear();
+    this.resizeObserver?.disconnect();
+    this.menuItemsObserver?.disconnect();
+    this.brandTextObserver?.disconnect();
   }
 
-  private updateCachedRightMenuContentWidth() {
-    const gap = 48;
-    const widths = Array.from(this.childWidths.values());
-    if (widths.length === 0) {
-      this.cachedRightMenuContentWidth = 0;
-      return;
+  private updateExpandStatus() {
+    let menuContentWidth = this.menuLeftWidth + this.menuRightWidth;
+    let enoughSpace = this.menuWidth > menuContentWidth + HeaderMenu.LOGICAL_GAP;
+    let initialExpandStage = this.expandStage();
+
+    if (enoughSpace) {
+      let extraSpaceToExpand = Number.MAX_VALUE;
+      switch (initialExpandStage) {
+        case 1:
+          extraSpaceToExpand = this.brandTextWidth;
+          break;
+        case 0:
+          extraSpaceToExpand = this.leftMenuItemsWidth + this.rightMenuItemsWidth + 48 - 40;
+          break;
       }
 
-    this.cachedRightMenuContentWidth =
-      widths.reduce((acc, w) => acc + w, 0) + (widths.length - 1) * gap;
+      if (
+        // Add a gap of 2px to prevent flickering
+        this.menuWidth >= menuContentWidth + HeaderMenu.LOGICAL_GAP + extraSpaceToExpand + 2
+      ) {
+        this.expandStage.set(initialExpandStage + 1);
+      }
+    } else if (initialExpandStage > 0) this.expandStage.set(initialExpandStage - 1);
   }
 
-  private resize(availableWidth: number) {
-    const hadSpace = this.hasExtraSpace();
-
-    const buffer = 20 * 2 + 24; // Internal Padding + Logical Gap
-    const threshold = hadSpace ? 0 : this.cachedTextWidth;
-    const hasSpace = availableWidth > this.cachedRightMenuContentWidth + threshold + buffer;
-
-    if (hadSpace !== hasSpace) this.ngZone.run(() => this.hasExtraSpace.set(hasSpace));
+  onHamburgerClick(): void {
+    this.popupService.open(NavigationMenu, {
+      position: { top: '84px', right: '20px' },
+    });
   }
 
   onSettingsClick() {

src/app/features/header-menu/navigation-menu.html

@@ -0,0 +1,23 @@
+<app-popup [position]="position()" (closeRequest)="close()">
+  <div header-left class="menu-header-title">
+    <span class="material-symbols-outlined">menu</span>
+    <span>{{ translation.menu.menu }}</span>
+  </div>
+
+  <div class="menu-content">
+    <div class="menu-section">
+      <a class="menu-item nav-link" [routerLink]="['/levels']" (click)="close()">{{ translation.menu.levels }}</a>
+      <span class="menu-item dummy-link">{{ translation.menu.community }}</span>
+      <span class="menu-item dummy-link">{{ translation.menu.leaderboard }}</span>
+      <span class="menu-item dummy-link">{{ translation.menu.about }}</span>
+    </div>
+
+    <hr class="menu-divider" />
+
+    <div class="menu-section">
+      <a class="menu-item nav-link" [routerLink]="['/known-issues']" (click)="close()">{{ translation.menu.knownIssues }}</a>
+      <span class="menu-item dummy-link"><strong>{{ translation.menu.login }}</strong></span>
+      <span class="menu-item dummy-link">{{ translation.menu.signup }}</span>
+    </div>
+  </div>
+</app-popup>

src/app/features/header-menu/navigation-menu.scss

@@ -0,0 +1,73 @@
+:host {
+  display: block;
+  user-select: none;
+}
+
+.menu-header-title {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  font-size: 18px;
+
+  .material-symbols-outlined {
+    font-size: 24px;
+  }
+}
+
+.menu-content {
+  display: flex;
+  flex-direction: column;
+  min-width: 276px;
+  padding-bottom: 12px;
+  gap: 12px;
+}
+
+.menu-section {
+  display: flex;
+  flex-direction: column;
+}
+
+.menu-divider {
+  height: 1px;
+  border: none;
+  background-color: light-dark(oklch(0 0 0 / 20%), oklch(1 0 0 / 20%));
+  margin: 0 6px;
+}
+
+.menu-item {
+  display: flex;
+  align-items: center;
+  align-content: center;
+  height: 40px;
+  padding-left: 12px;
+  text-decoration: none;
+  color: inherit;
+  font-size: 18px;
+  cursor: pointer;
+  vertical-align: middle;
+  transition: background-color 0.2s;
+  border-radius: 4px;
+
+  .material-symbols-outlined {
+    font-size: 24px;
+    color: light-dark(oklch(0.4 0 0), oklch(0.8 0 0));
+  }
+
+  strong {
+    font-weight: 700;
+  }
+
+  &.nav-link {
+    font-weight: 700;
+    color: oklch(0.6 0.15 250);
+    transition: opacity 0.3s;
+
+    &:hover {
+      opacity: 0.7;
+    }
+  }
+
+  &.dummy-link {
+    cursor: not-allowed;
+  }
+}

src/app/features/header-menu/navigation-menu.ts

@@ -0,0 +1,26 @@
+import { Component, inject, input } from '@angular/core';
+import { RouterLink } from '@angular/router';
+import { PopupComponent, PopupPosition } from '../../components/popup/popup';
+import { PopupService } from '../../services/popup.service';
+import { TranslationService } from '../../services/translation.service';
+
+@Component({
+  selector: 'navigation-menu',
+  standalone: true,
+  imports: [PopupComponent, RouterLink],
+  templateUrl: './navigation-menu.html',
+  styleUrl: './navigation-menu.scss',
+})
+export class NavigationMenu {
+  private popupService = inject(PopupService);
+  protected translation = inject(TranslationService).translation;
+
+  /**
+   * 팝업의 위치
+   */
+  position = input<PopupPosition | 'center'>('center');
+
+  close() {
+    this.popupService.close(NavigationMenu);
+  }
+}

src/app/features/settings/category.html

@@ -0,0 +1,2 @@
+<label class="category-header">{{ headerLabel() }}</label>
+<ng-content></ng-content>

src/app/features/settings/category.scss

@@ -0,0 +1,17 @@
+:host {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  align-items: flex-start;
+  justify-content: flex-start;
+  margin: 0; padding: 0;
+  border: none;
+}
+
+label {
+  display: block;
+  font-weight: 500;
+  font-size: 14px;
+  height: 15px;
+  // color: oklch(0.6830 0 0); // #999999
+}

src/app/features/settings/container.html

@@ -0,0 +1,17 @@
+@if (settingsType() == SettingsType.Switch) {
+  <div class="settings-name">
+    @if (labelIcon()?.trim()?.length ?? 0 > 0) {
+      <span class="material-symbols-outlined icon-24 settings-icon" aria-hidden="true">{{ labelIcon() }}</span>
+    }
+    <label [id]="labelID">{{ labelText() }}</label>
+  </div>
+  <switch [isActive]="value()" (toggle)="onChange.emit($event)" [aria-labelledby]="labelID"></switch>
+} @else if (settingsType() == SettingsType.Dropdown) {
+  <label [id]="labelID" class="hidden-label">{{ labelText() }}</label>
+  <dropdown [options]="options()"
+            [value]="value()"
+            (selectionChange)="onChange.emit($event)"
+            [aria-labelledby]="labelID"
+            [placeholder]="placeholder()?.trim() ?? ''"
+            [icon]="labelIcon()"></dropdown>
+}

src/app/features/settings/container.scss

@@ -0,0 +1,55 @@
+:host {
+  width: 100%;
+  display: flex;
+
+  &:has(> switch) {
+    height: 32px;
+
+    &:nth-child(1 of .settings-container) {
+      margin-top: 4px;
+    }
+  }
+
+  &:has(> dropdown) {
+    height: 40px;
+  }
+
+  flex-direction: row;
+  align-items: center;
+  justify-content: space-between;
+
+  .settings-name {
+    display: flex;
+    flex-direction: row;
+    align-items: center;
+    padding-left: 10px;
+    gap: 8px;
+
+    span, label {
+      display: inline-block;
+      font-size: 18px;
+
+      &.settings-icon {
+        display: inline-block;
+        width: 24px;
+        height: 24px;
+
+        font-size: 24px;
+
+        /*
+        line-height: 24px;
+        */
+      }
+    }
+  }
+
+  dropdown {
+    width: 324px;
+  }
+
+  .hidden-label {
+    width: 0;
+    height: 0;
+    overflow: hidden;
+  }
+}

src/app/features/settings/popup.html

@@ -1,47 +0,0 @@
-<app-popup (closeRequest)="close()" [position]="position()">
-  <div header-left class="profile-section">
-    <img ngSrc="/guest_profile.png" alt="profile" class="avatar" width="24" height="24">
-    <span>{{ settingsService.userName() }}</span>
-  </div>
-
-  <div class="settings-content">
-    <section class="settings-category">
-      <label class="category-header">{{ translation.settings.language }}</label>
-
-      <div class="settings-container">
-        <dropdown [options]="languages"
-                  [value]="settingsService.language()"
-                  (selectionChange)="onLanguageChange($event)"
-                  icon="language"></dropdown>
-      </div>
-
-      <div class="settings-container">
-        <div class="settings-name">
-          <span class="material-symbols-outlined icon-24 settings-icon">match_case</span>
-          <span>{{ translation.settings.romanisation }}</span>
-        </div>
-        <switch [isActive]="settingsService.romanisation()" (toggle)="onRomanisationChange($event)"></switch>
-      </div>
-    </section>
-
-    <section class="settings-category">
-      <label class="category-header">{{ translation.settings.appearance }}</label>
-      <div class="settings-container">
-        <div class="settings-name">
-          <span class="material-symbols-outlined icon-24 settings-icon">dark_mode</span>
-          <span>{{ translation.settings.darkMode }}</span>
-        </div>
-        <switch [isActive]="settingsService.darkMode()" (toggle)="onDarkModeChange($event)"></switch>
-      </div>
-
-      <div class="settings-container">
-        <div class="settings-name">
-          <span class="material-symbols-outlined icon-24 settings-icon">motion_photos_paused</span>
-          <span>{{ translation.settings.reduceAnimation }}</span>
-        </div>
-        <switch [isActive]="settingsService.reduceAnimation()" (toggle)="onReduceAnimationChange($event)"></switch>
-      </div>
-    </section>
-  </div>
-
-</app-popup>

src/app/features/settings/popup.scss

@@ -1,92 +0,0 @@
-:host {
-  display: block;
-  user-select: none;
-}
-
-.profile-section {
-  display: flex;
-  align-items: center;
-  gap: 12px;
-
-  font-size: 18px;
-  font-weight: 500;
-
-  .avatar {
-    border-radius: 50%;
-    outline: 1px solid oklch(0 0 0 / 20%);
-    object-fit: cover;
-  }
-}
-
-.settings-content {
-  display: flex;
-  flex-direction: column;
-  gap: 16px;
-
-  padding-bottom: 12px;
-
-  section.settings-category {
-    display: flex;
-    flex-direction: column;
-    gap: 6px;
-    align-items: flex-start;
-    justify-content: flex-start;
-    margin: 0; padding: 0;
-    border: none;
-
-    label {
-      display: block;
-      font-weight: 500;
-      font-size: 14px;
-      height: 15px;
-      // color: oklch(0.6830 0 0); // #999999
-    }
-
-    & > .settings-container {
-      width: 100%;
-      display: flex;
-
-      &:has(> switch) {
-        height: 32px;
-
-        &:nth-child(1 of .settings-container) {
-          margin-top: 4px;
-        }
-      }
-
-      &:has(> dropdown) {
-        height: 40px;
-      }
-
-      flex-direction: row;
-      align-items: center;
-      justify-content: space-between;
-
-      .settings-name {
-        display: flex;
-        flex-direction: row;
-        align-items: center;
-        padding-left: 10px;
-        gap: 8px;
-
-        span {
-          display: inline-block;
-          font-size: 18px;
-
-          &.settings-icon {
-            display: inline-block;
-            font-size: 24px;
-
-            width: 24px;
-            height: 24px;
-            line-height: 24px;
-          }
-        }
-      }
-    }
-
-    dropdown {
-      width: 324px;
-    }
-  }
-}

src/app/features/settings/settings.html

@@ -0,0 +1,42 @@
+<app-popup (closeRequest)="close()" [position]="position()">
+  <div header-left class="profile-section">
+    <img ngSrc="/guest_profile.png" alt="profile" class="avatar" width="24" height="24">
+    <span>{{ settingsService.isGuest() ? translation.settings.guest : settingsService.userName() }}</span>
+  </div>
+
+  <div class="settings-content">
+    <settings-category [headerLabel]="translation.settings.language">
+      <settings-container
+        [settingsType]="SettingsType.Dropdown"
+        [options]="languages"
+        [value]="settingsService.language()"
+        [labelText]="translation.settings.language" labelIcon="language"
+        (onChange)="onLanguageChange($event)">
+      </settings-container>
+
+      <settings-container
+        [settingsType]="SettingsType.Switch"
+        [value]="settingsService.romanisation()"
+        [labelText]="translation.settings.romanisation" labelIcon="match_case"
+        (onChange)="onRomanisationChange($event)">
+      </settings-container>
+    </settings-category>
+
+    <settings-category [headerLabel]="translation.settings.appearance">
+      <settings-container
+        [settingsType]="SettingsType.Switch"
+        [value]="settingsService.darkMode()"
+        [labelText]="translation.settings.darkMode" labelIcon="dark_mode"
+        (onChange)="onDarkModeChange($event)">
+      </settings-container>
+
+      <settings-container
+        [settingsType]="SettingsType.Switch"
+        [value]="settingsService.reduceAnimation()"
+        [labelText]="translation.settings.reduceAnimation" labelIcon="motion_photos_paused"
+        (onChange)="onReduceAnimationChange($event)">
+      </settings-container>
+    </settings-category>
+  </div>
+
+</app-popup>

src/app/features/settings/settings.scss

@@ -0,0 +1,29 @@
+:host {
+  display: block;
+  user-select: none;
+}
+
+.profile-section {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+
+  font-size: 18px;
+  font-weight: 500;
+
+  .avatar {
+    border-radius: 50%;
+    outline: 1px solid oklch(0 0 0 / 20%);
+    object-fit: cover;
+  }
+}
+
+.settings-content {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+
+  padding-top: 4px;
+  padding-bottom: 12px;
+}
+

src/app/features/settings/settings.ts

@@ -1,4 +1,4 @@
-import { Component, inject, input } from '@angular/core';
+import { Component, inject, input, output } from '@angular/core';
 import { PopupComponent, PopupPosition } from '../../components/popup/popup';
 import { Dropdown, DropdownOption } from '../../components/dropdown/dropdown';
 import { Switch } from '../../components/switch/switch';
@@ -7,12 +7,59 @@ import { PopupService } from '../../services/popup.service';
 import { SettingsService, Language } from '../../services/settings.service';
 import { TranslationService } from '../../services/translation.service';
 
+export enum SettingsType {
+  Switch = 'switch', Dropdown = 'dropdown',
+}
+
+@Component({
+  selector: 'settings-category',
+  standalone: true,
+  templateUrl: './category.html',
+  styleUrl: './category.scss',
+})
+export class SettingsCategory {
+  headerLabel = input<string>();
+}
+
+@Component({
+  selector: 'settings-container',
+  standalone: true,
+  templateUrl: './container.html',
+  styleUrl: './container.scss',
+  imports: [Switch, Dropdown],
+  host: {
+    // For IDE Compatibility
+    '[class.settings-container]': 'true',
+  },
+})
+export class SettingsContainer {
+  settingsType = input.required<SettingsType>();
+  protected readonly SettingsType = SettingsType;
+
+  labelIcon = input<string>();
+  labelText = input.required<string>();
+
+  value = input.required<any>();
+  onChange = output<any>();
+
+  placeholder = input<string>();
+  options = input<any>();
+
+  private static nextID = 0;
+  labelID = `settings-${SettingsContainer.nextID++}-label`;
+}
+
 @Component({
   selector: 'settings-popup',
   standalone: true,
-  imports: [PopupComponent, Dropdown, Switch, NgOptimizedImage],
-  templateUrl: './popup.html',
-  styleUrl: './popup.scss',
+  imports: [
+    PopupComponent,
+    NgOptimizedImage,
+    SettingsCategory,
+    SettingsContainer,
+  ],
+  templateUrl: './settings.html',
+  styleUrl: './settings.scss',
 })
 export class SettingsPopup {
   private popupService = inject(PopupService);
@@ -52,4 +99,6 @@ export class SettingsPopup {
   close() {
     this.popupService.close(SettingsPopup);
   }
+
+  protected readonly SettingsType = SettingsType;
 }

src/app/i18n/en.ts

@@ -16,11 +16,17 @@ export const EN = {
     knownIssues: 'Known Issues',
     login: 'Login',
     signup: 'Signup',
+    menu: 'Menu',
   },
   common: {
     selectOption: 'Select Option...',
     close: 'Close',
     save: 'Save',
+    skipToContent: 'Skip to main content',
+  },
+  levelCard: {
+    preview: '{{trackName}} by {{artist}} Preview',
+    download: "{{creator}}'s Level Download",
   },
 };
 

src/app/i18n/jp.ts

@@ -18,10 +18,16 @@ export const JP: Translation = {
     knownIssues: '既知の問題',
     login: 'ログイン',
     signup: '新規登録',
+    menu: 'メニュー',
   },
   common: {
-    selectOption: '選択...',
+    selectOption: 'オプションを選択...',
     close: '閉じる',
     save: '保存',
+    skipToContent: '本文へスキップ',
+  },
+  levelCard: {
+    preview: '{{artist}}の{{trackName}} プレビュー',
+    download: '{{creator}}のレベルをダウンロード',
   },
 };

src/app/i18n/kr.ts

@@ -18,10 +18,16 @@ export const KR: Translation = {
     knownIssues: '알려진 문제',
     login: '로그인',
     signup: '회원가입',
+    menu: '메뉴',
   },
   common: {
-    selectOption: '선택...',
+    selectOption: '옵션 선택...',
     close: '닫기',
     save: '저장',
+    skipToContent: '본문으로 건너뛰기',
+  },
+  levelCard: {
+    preview: '{{artist}}의 {{trackName}} 미리듣기',
+    download: '{{creator}}의 레벨 다운로드',
   },
 };

src/app/pages/levels/levels.html

@@ -0,0 +1,40 @@
+<h1>Level Card Test</h1>
+
+<div class="container">
+  <level-card
+    artist="HyuN"
+    trackName="Disorder (Low VFX)"
+    [creator]="['YOON']"></level-card>
+  <level-card
+    artist="Cinamoro"
+    trackName="Little Rabbit and Deliverance"
+    [creator]="['한가지']"></level-card>
+  <level-card
+    artist="linear ring"
+    trackName="Dream By Coma"
+    [creator]="['Ryuha']"></level-card>
+  <level-card
+    artist="Plum"
+    trackName="Champagne Pop"
+    [creator]="['Zizak']"></level-card>
+  <level-card
+    artist="JinoBeats ft. JinoBeats"
+    trackName="~ Black Forsaken Wings ~"
+    [creator]="['Sakura']"></level-card>
+  <level-card
+    artist="seatrus"
+    trackName="M A X I M U M B L A S T E R"
+    [creator]="['TraZ']"></level-card>
+  <level-card
+    artist="MegaSphere"
+    trackName="Inferno"
+    [creator]="['-K']"></level-card>
+  <level-card
+    artist="Rinne"
+    trackName="Aurelia"
+    [creator]="['토끼로봇']"></level-card>
+  <level-card
+    artist="Sot-C"
+    trackName="Escalation"
+    [creator]="['Chartic']"></level-card>
+</div>

src/app/pages/levels/levels.scss

@@ -0,0 +1,17 @@
+@scope(:host) {
+  width: 100%;
+  text-align: center;
+}
+
+:host > h1 {
+  margin-top: 40px;
+}
+
+:host > .container {
+  display: flex;
+  flex-wrap: wrap;
+  justify-content: center;
+  gap: 40px;
+  max-width: calc(40px * 2 + 400px * 3);
+  margin: 0 auto;
+}

src/app/pages/levels/levels.ts

@@ -0,0 +1,15 @@
+import { Component, signal } from '@angular/core';
+import { Switch } from '../../components/switch/switch';
+import { Dropdown, DropdownOption } from '../../components/dropdown/dropdown';
+import { BrandAccent } from '../../components/brand-accent/brand-accent';
+import { LevelCard } from '../../components/level-card/level-card';
+
+@Component({
+  selector: 'app-levels',
+  standalone: true,
+  imports: [LevelCard],
+  templateUrl: './levels.html',
+  styleUrl: './levels.scss',
+})
+export class LevelPage {
+}

src/app/pages/main/main.html

@@ -1,6 +1,6 @@
-<div class="container">
 <brand-accent></brand-accent>
 
+<div class="container">
   <h1>Component Test</h1>
 
   <section id="switch-test" class="feature-block">

src/app/pages/main/main.scss

@@ -1,6 +1,16 @@
+:host {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  position: relative;
+  width: 100%;
+}
+
 :host > .container {
   display: flex;
-  width: 600px;
+  width: 100%;
+  max-width: 600px;
+  box-sizing: border-box;
 
   flex-direction: column;
   gap: 40px;
@@ -8,7 +18,8 @@
 
 section#dropdown-test {
   dropdown {
-    width: 324px;
+    width: 100%;
+    max-width: 324px;
   }
 }
 
@@ -35,11 +46,12 @@ div.test-container {
 brand-accent {
   position: absolute;
 
-  width: 100%;
-  height: 100%;
-
-  top: 0;
+  top: -64px;
   left: 0;
 
+  width: 100%;
+  min-width: 100dvw;
+  height: calc(100% + 64px);
+  min-height: 100dvh;
   z-index: -999999;
 }

src/app/pages/main/main.ts

@@ -20,6 +20,40 @@ export class MainPage {
     { label: 'Deutsch', value: 'DE' },
     { label: 'Italiano', value: 'IT' },
     { label: '中文', value: 'CN' },
+    { label: 'Français', value: 'FR' },
+    { label: 'Español', value: 'ES' },
+    { label: 'Português', value: 'PT' },
+    { label: 'Русский', value: 'RU' },
+    { label: 'العربية', value: 'AR' },
+    { label: 'हिन्दी', value: 'HI' },
+    { label: 'বাংলা', value: 'BN' },
+    { label: 'Tiếng Việt', value: 'VI' },
+    { label: 'Türkçe', value: 'TR' },
+    { label: 'Polski', value: 'PL' },
+    { label: 'Українська', value: 'UK' },
+    { label: 'Nederlands', value: 'NL' },
+    { label: 'Ελληνικά', value: 'EL' },
+    { label: 'Magyar', value: 'HU' },
+    { label: 'Čeština', value: 'CS' },
+    { label: 'Română', value: 'RO' },
+    { label: 'Svenska', value: 'SV' },
+    { label: 'Dansk', value: 'DA' },
+    { label: 'Suomi', value: 'FI' },
+    { label: 'Norsk', value: 'NO' },
+    { label: 'ไทย', value: 'TH' },
+    { label: 'Bahasa Indonesia', value: 'ID' },
+    { label: 'Bahasa Melayu', value: 'MS' },
+    { label: 'Filipino', value: 'TL' },
+    { label: 'עברית', value: 'HE' },
+    { label: 'فارسی', value: 'FA' },
+    { label: 'اردو', value: 'UR' },
+    { label: 'தமிழ்', value: 'TA' },
+    { label: 'తెలుగు', value: 'TE' },
+    { label: 'ಕನ್ನಡ', value: 'KN' },
+    { label: 'മലയാളം', value: 'ML' },
+    { label: 'मराठी', value: 'MR' },
+    { label: 'ગુજરાતી', value: 'GU' },
+    { label: 'ਪੰਜਾਬੀ', value: 'PA' },
   ];
 
   selectedDropdownValue = signal<any>(null);

src/app/services/settings.service.ts

@@ -23,6 +23,7 @@ export class SettingsService {
   romanisation = computed(() => this._romanisation());
   userName = computed(() => this._userName());
   reduceAnimation = computed(() => this._reduceAnimation());
+  isGuest = computed(() => true);
 
   constructor() {
     this.request = inject(REQUEST);

src/app/services/translation.service.ts

@@ -29,4 +29,14 @@ export class TranslationService {
   readonly translation = new Proxy({} as Translation, {
     get: (_, prop) => this._translation()[prop as keyof Translation]
   });
+
+  /**
+   * 문자열 내의 플레이스홀더(예: {{name}})를 실제 값으로 치환합니다.
+   */
+  interpolate(text: string, params: Record<string, string | number>): string {
+    return Object.entries(params).reduce(
+      (acc, [key, value]) => acc.replace(new RegExp(`{{${key}}}`, 'g'), String(value)),
+      text
+    );
+  }
 }

src/styles.scss

@@ -39,6 +39,8 @@ body {
   margin: 0;
   overscroll-behavior-x: none;
   background-color: white;
+
+  min-height: 100dvh;
 }
 
 .icon-24 {
@@ -118,7 +120,11 @@ section.feature-block {
   margin: 0 auto;
 }
 
+* {
+  --selection-outline-color: light-dark(#{list.nth(library.$brand_palette, 5)}, #{list.nth(library.$brand_palette, 6)});
+}
+
 *:focus-visible {
-  outline: 2px solid list.nth(library.$brand_palette, 5);
+  outline: 2px solid var(--selection-outline-color);
   outline-offset: 2px;
 }

src/styles/_library.scss

@@ -12,5 +12,21 @@ $brand_palette: [
   oklch(0.4509 0.1688 29.86), // #9E190E
   oklch(0.3897 0.1391 29.75), // #7F180F
   oklch(0.2547 0.0913 29.02), // #450805
+  oklch(0.1752 0.0717 29.02), // #280000
 ];
 
+/*
+$brand_palette: [
+  oklch(0.9999 0.2237 35.33),
+  oklch(0.9090 0.2237 35.33),
+  oklch(0.8181 0.2237 35.33),
+  oklch(0.7272 0.2237 35.33),
+  oklch(0.6363 0.2237 35.33),
+  oklch(0.5454 0.2237 35.33),
+  oklch(0.4545 0.2237 35.33),
+  oklch(0.3636 0.2237 35.33),
+  oklch(0.2727 0.2237 35.33),
+  oklch(0.1818 0.2237 35.33),
+  oklch(0.0909 0.2237 35.33),
+];
+*/