/* ========================================
   電気メガネ ディスプレイテストツール
   共通スタイル
   本家 https://megane.8796.jp/ のデザインを踏襲
   ======================================== */

/* CSS変数 - 本家のダークテーマ踏襲 */
:root {
  /* 本家踏襲カラー（グラスモーフィズム） */
  --surface: rgba(15, 23, 42, 0.85);
  --surface-solid: #0f172a;
  --border: rgba(148, 163, 184, 0.3);
  --text-primary: #f8fafc;
  --text-muted: #cbd5f5;
  --text-dim: #94a3b8;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --bg-body: #020617;

  /* 互換用エイリアス */
  --color-primary: var(--text-primary);
  --color-accent: var(--accent);
  --color-accent-hover: var(--accent-strong);
  --color-bg: var(--bg-body);
  --color-bg-card: var(--surface);
  --color-text: var(--text-primary);
  --color-text-light: var(--text-muted);
  --color-text-muted: var(--text-dim);
  --color-text-inverse: #0f172a;
  --color-border: var(--border);
  --color-header-bg: rgba(15, 23, 42, 0.6);
  --color-footer-bg: rgba(15, 23, 42, 0.6);
  --color-success: #4ade80;
  --color-warning: #fbbf24;
  --color-danger: #f87171;

  /* サイズ */
  --header-height: 56px;
  --footer-height: 80px;
  --content-max-width: 800px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* アニメーション */
  --transition-fast: 150ms;
  --transition-normal: 250ms;
  --transition-slow: 400ms;

  /* フォント */
  --font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", sans-serif;
}

/* リセット */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-body);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-strong);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ========================================
   ヘッダー
   ======================================== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10;
  background: rgba(15, 23, 42, 0.6);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  gap: 1rem;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.header__logo p {
  margin: 0;
  white-space: nowrap;
}

.site-title-link {
  color: inherit;
  text-decoration: none;
}

.site-title-link:hover {
  opacity: 0.8;
}

.home-link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: color 0.2s;
  padding: 4px;
  border-radius: 6px;
}

.home-link:hover {
  color: var(--accent);
  background: rgba(148, 163, 184, 0.1);
}

/* ========================================
   メインコンテンツ
   ======================================== */
.main {
  flex: 1;
  width: 100%;
  max-width: 100%;
  padding: 0;
  margin: 0;
}

/* セクション共通 */
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title::before {
  content: '';
  display: block;
  width: 4px;
  height: 1.2em;
  background: var(--accent);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--accent);
}

.section-desc {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

.section-desc strong {
  color: var(--accent);
  font-weight: 600;
}

/* ========================================
   ヒーローセクション
   ======================================== */
.hero-section {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 6rem 1.5rem 4rem;
  background: radial-gradient(circle at center, #1e293b 0%, #020617 100%);
  margin-bottom: 0;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.4;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(1rem, 4vw, 1.5rem);
  color: var(--accent);
  margin-bottom: 3rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
  text-shadow: 0 0 20px rgba(56, 189, 248, 0.5);
}

.start-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 700;
  padding: 1.25rem 4rem;
  border-radius: 100px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.2), inset 0 0 20px rgba(56, 189, 248, 0.1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.start-button:hover {
  background: var(--accent);
  color: #020617;
  box-shadow: 0 0 50px rgba(56, 189, 248, 0.6);
  transform: scale(1.05);
}

.start-button:active {
  transform: scale(0.98);
}

.hero-settings {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
}

/* トグルスイッチ */
.switch-toggle {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.1);
  transition: .3s;
  border-radius: 34px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.switch-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: rgba(255, 255, 255, 0.8);
  transition: .3s;
  border-radius: 50%;
}

input:checked + .switch-slider {
  background-color: rgba(56, 189, 248, 0.3);
  border-color: var(--accent);
}

input:checked + .switch-slider:before {
  transform: translateX(20px);
  background-color: var(--accent);
}

.setting-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.9rem;
  user-select: none;
}

.setting-switch:hover .switch-slider {
  border-color: rgba(255, 255, 255, 0.4);
}

.setting-share {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-size: 1.2rem;
  transition: all 0.2s;
}

.setting-share:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* ========================================
   特徴セクション
   ======================================== */
.features-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  padding: 4rem 1.5rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.feature-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 2rem;
  border-radius: 16px;
  text-align: center;
  transition: transform 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.04);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.feature-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ========================================
   テスト一覧セクション
   ======================================== */
.test-list-section {
  padding: 2rem 1.5rem 4rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
}

/* ========================================
   操作説明セクション
   ======================================== */
.instructions-section {
  padding: 0 1.5rem 6rem;
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.instructions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1rem;
}

.instruction-item {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1.5rem 1rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.75rem;
}

.instruction-icon {
  font-size: 2rem;
}

.instruction-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.instruction-text small {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 0.25rem;
}

/* ========================================
   フッター
   ======================================== */
.footer {
  background: #020617;
  border-top: 1px solid var(--border);
  padding: 3rem 1.5rem;
  margin-top: auto;
}

.footer__content {
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer__nav {
  display: flex;
  gap: 2rem;
}

.footer__link {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer__link:hover {
  color: var(--accent);
}

.footer__copyright {
  color: var(--text-dim);
  font-size: 0.8rem;
}

@media (min-width: 600px) {
  .footer__content {
    flex-direction: row;
    justify-content: space-between;
  }
}
.test-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.test-category {
  background: transparent;
  border: none;
  border-radius: 0;
  overflow: visible;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.test-category__header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 0 1rem 0;
  background: transparent;
  cursor: default;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.test-category__header:hover {
  background: transparent;
}

.test-category__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.test-category__title::before {
  content: '';
  display: block;
  width: 4px;
  height: 1em;
  background: var(--accent);
  border-radius: 2px;
}

.test-category__items {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
}

.test-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.test-item:hover {
  background-color: rgba(56, 189, 248, 0.15);
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.test-item:active {
  transform: translateY(0);
}

.test-item__icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  line-height: 1;
}

.test-item__content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  width: 100%;
}

.test-item__name {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.3;
}

.test-item__desc {
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.4;
  opacity: 0.8;
}

/* スマホ向け調整 */
@media (max-width: 600px) {
  .test-category__items {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  
  .test-item {
    padding: 1rem;
  }
  
  .test-item__icon {
    font-size: 1.75rem;
  }
  
  .test-item__name {
    font-size: 0.9rem;
  }
}

/* ========================================
   3Dモード促進モーダル
   ======================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  cursor: default;
}

.modal-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--spacing-xl);
  width: min(90vw, 400px);
  max-width: 400px;
  margin: var(--spacing-md);
  text-align: center;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.modal__icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.modal__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.modal__text {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  font-size: 0.9375rem;
}

.modal__checkbox {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.modal__checkbox input {
  width: 18px;
  height: 18px;
}

.modal__button {
  background: var(--accent);
  color: #0f172a;
  padding: 0.55rem 1.5rem;
  border-radius: 6px;
  font-weight: 600;
  transition: background 0.2s;
}

.modal__button:hover {
  background: var(--accent-strong);
}

.modal__button--secondary {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}

.modal__button--secondary:hover {
  background: rgba(56, 189, 248, 0.1);
}

.modal__buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
}

/* Full SBSモード時は左目側の中央に表示 */
.modal-overlay.is-sbs-mode .modal {
  position: fixed;
  top: 50%;
  left: 25%;
  transform: translate(-50%, -50%);
  margin: 0; /* flexboxのマージンをリセット */
}

/* 右目用ミラー（Modal） */
.modal-overlay.is-sbs-mode .modal.is-mirror {
  left: 75%;
}

/* ========================================
   ページ構造（統合版）
   ======================================== */
.page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.page--index {
  /* 選択画面 */
}

.page--test {
  /* テスト画面 */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  
  /* Android Chrome等での長押しによるテキスト選択・コンテキストメニューを抑止 */
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  touch-action: none;
}

/* フルスクリーン時の追加抑止 */
.page--test:fullscreen {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

/* テストモード時のbody */
body.is-test-mode {
  overflow: hidden;
  background: #000;
  cursor: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}

/* ========================================
   テスト実行画面
   ======================================== */
.test-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.test-canvas {
  display: block;
}

/* フルスクリーンモード */
.test-canvas--fullscreen {
  position: absolute;
  top: 0;
  left: 0;
}

/* テスト名表示 */
.test-name {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 2rem;
  font-weight: 600;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
  opacity: 0;
  pointer-events: none;
  z-index: 50;
  transition: opacity var(--transition-normal);
  white-space: nowrap;
}

.test-name.is-visible {
  opacity: 1;
}

/* Full SBSモード時は左目側の中央に表示 */
.test-name.is-sbs-mode {
  left: 25%;
  transform: translate(-50%, -50%);
}

/* 右目用ミラー（Test Name） */
.test-name.is-sbs-mode.is-mirror {
  left: 75%;
}

/* ========================================
   コンテキストメニュー
   ======================================== */
.context-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: transparent;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  cursor: default;
}

.context-menu-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.context-menu {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  min-width: 280px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  z-index: 201;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

/* Full SBSモード時は左目側の中央に表示 */
.context-menu-overlay.is-sbs-mode .context-menu {
  left: 25%;
  transform: translate(-50%, -50%);
}

/* 右目用ミラー（Context Menu） */
.context-menu-overlay.is-sbs-mode .context-menu.is-mirror {
  left: 75%;
}

.context-menu__section {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.context-menu__section:last-child {
  border-bottom: none;
}

.context-menu__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  color: var(--color-text);
}

.context-menu__item:hover {
  background-color: rgba(56, 189, 248, 0.1);
}

.context-menu__item--danger {
  color: #dc3545;
}

.context-menu__icon {
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.context-menu__label {
  flex: 1;
}

/* パラメータ調整セクション */
.context-menu__params {
  padding: var(--spacing-md);
}

.context-menu__params-title {
  font-weight: 500;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
  font-size: 0.875rem;
}

.param-control {
  margin-bottom: var(--spacing-md);
}

.param-control:last-child {
  margin-bottom: 0;
}

.param-control__label {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
  font-size: 0.875rem;
}

.param-control__name {
  color: var(--color-text);
}

.param-control__value {
  color: var(--color-text-light);
  font-family: monospace;
}

.param-control__slider {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
}

.param-control__slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
}

.param-control__slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

/* 配色選択 */
.param-control__options {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.param-control__option {
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.param-control__option:hover {
  border-color: var(--color-accent);
}

.param-control__option.is-selected {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}

/* ========================================
   ページ切替アニメーション
   ======================================== */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 100;
}

/* 次へ: 下から上 */
@keyframes slide-up-enter {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes slide-up-leave {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-100%);
  }
}

/* 前へ: 上から下 */
@keyframes slide-down-enter {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

@keyframes slide-down-leave {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(100%);
  }
}

.slide-up-enter {
  animation: slide-up-enter var(--transition-normal) ease-out forwards;
}

.slide-up-leave {
  animation: slide-up-leave var(--transition-normal) ease-out forwards;
}

.slide-down-enter {
  animation: slide-down-enter var(--transition-normal) ease-out forwards;
}

.slide-down-leave {
  animation: slide-down-leave var(--transition-normal) ease-out forwards;
}

/* ========================================
   トースト通知
   ======================================== */
.toast {
  position: fixed;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 6px;
  font-size: 0.9375rem;
  z-index: 300;
  opacity: 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  pointer-events: none;
}

.toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Full SBSモード時は左目側の中央に表示 */
.is-sbs-mode .toast {
  left: 25%;
  transform: translateX(-50%) translateY(100px);
}

.is-sbs-mode .toast.is-visible {
  transform: translateX(-50%) translateY(0);
}

/* 右目用ミラー（Toast） */
.is-sbs-mode .toast.is-mirror {
  left: 75%;
}

/* ========================================
   レスポンシブ
   ======================================== */
@media (max-width: 600px) {
  .header__title {
    font-size: 1.125rem;
  }

  .main {
    padding: var(--spacing-md);
  }

  .test-item__name {
    min-width: 100px;
  }

  .test-item__desc {
    font-size: 0.8125rem;
  }

  .context-menu {
    min-width: 260px;
  }
}

/* ========================================
   フルスクリーン時
   ======================================== */
:fullscreen {
  background-color: #000;
}

::backdrop {
  background-color: #000;
}