/* style.css */

/* --- デザインシステム / 共通変数 --- */
:root {
  --font-sans: 'Outfit', 'Inter', 'Noto Sans JP', sans-serif;
  
  /* メインUIテーマ（クールなダーク＆ライトハイブリッド調） */
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-control: #f1f5f9;
  --border-color: #e2e8f0;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: rgba(79, 70, 229, 0.1);
  --success: #10b981;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-premium: 0 20px 25px -5px rgba(79, 70, 229, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* 基本リセット */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* --- レイアウト構造 --- */
.app-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 30px 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ヘッダー */
.app-header {
  margin-bottom: 30px;
  text-align: center;
}
.header-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), #818cf8);
  color: #fff;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}
.header-logo h1 {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-main), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}
.header-subtitle {
  color: var(--text-muted);
  font-size: 15px;
  font-weight: 500;
}

/* メインエリア（2カラム） */
.app-main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 30px;
  flex: 1;
  min-width: 0;
}

/* --- コントロールパネル (左カラム) --- */
.control-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.panel-section {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-premium);
  border: 1px solid var(--border-color);
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
}

/* プリセット選択のカテゴリー分け */
.preset-category {
  margin-bottom: 18px;
}
.preset-category:last-child {
  margin-bottom: 0;
}
.category-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

/* プリセットグリッド */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

/* プリセットボタン共通 */
.preset-btn {
  background: var(--bg-control);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: 10px 6px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-normal);
  overflow: hidden;
}
.preset-btn span {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-main);
  text-align: center;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  width: 100%;
}
.preset-btn:hover {
  background: #e2e8f0;
  transform: translateY(-2px);
}
.preset-btn.active {
  background: var(--primary-light);
  border-color: var(--primary);
}
.preset-btn.active span {
  color: var(--primary);
}

/* --- プリセットサムネイルの擬似再現 (CSS) --- */
[class^="preset-thumb-"] {
  width: 100%;
  height: 38px;
  background-color: #fff;
  border-radius: 4px;
  border: 1px solid #cbd5e1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: bold;
  color: #334155;
  position: relative;
  box-sizing: border-box;
}

/* 1. 左線＋グラデ下線 */
.preset-thumb-1 {
  border-left: 3px solid var(--primary);
  border-bottom: 1.5px solid #e2e8f0;
  padding-left: 4px;
  justify-content: flex-start;
}
.preset-thumb-1::after {
  content: '';
  position: absolute;
  left: -3px; bottom: -1.5px;
  width: 60%; height: 1.5px;
  background: linear-gradient(90deg, var(--primary), #818cf8);
}

/* 2. 上下ボーダー */
.preset-thumb-2 {
  border-top: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  background-color: #f8fafc;
}

/* 3. 左グラデ太線 */
.preset-thumb-3 {
  border-left: 3px solid transparent;
  border-image: linear-gradient(to bottom, var(--primary), #818cf8) 1 100%;
  padding-left: 4px;
  justify-content: flex-start;
}

/* 4. 斜め背景カット */
.preset-thumb-4 {
  background: linear-gradient(135deg, var(--primary), #818cf8);
  color: #fff !important;
  clip-path: polygon(0 0, 100% 0, 90% 100%, 0 100%);
  border: none;
}

/* 5. 吹き出し風 */
.preset-thumb-5 {
  background-color: #f8fafc;
  border: 1.5px solid var(--primary);
}
.preset-thumb-5::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 15px;
  border-width: 4px 4px 0;
  border-style: solid;
  border-color: var(--primary) transparent transparent;
}

/* 6. ステッチ調 */
.preset-thumb-6 {
  background-color: #f8fafc;
  border: 1.5px solid var(--primary);
  padding: 2px;
}
.preset-thumb-6 span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%; height: 100%;
  border: 1px dashed var(--primary);
  border-radius: 2px;
  font-size: 9px;
  color: #334155;
}

/* 7. ストライプ背景 */
.preset-thumb-7 {
  border-left: 3px solid var(--primary);
  background: repeating-linear-gradient(45deg, #f1f5f9, #f1f5f9 4px, #ffffff 4px, #ffffff 8px);
  padding-left: 4px;
  justify-content: flex-start;
}

/* 8. リボン風 */
.preset-thumb-8 {
  background: linear-gradient(to right, var(--primary), #818cf8);
  color: #fff !important;
  border: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 9. 蛍光マーカー */
.preset-thumb-9 {
  border: none;
  background: linear-gradient(transparent 60%, rgba(251, 191, 36, 0.6) 60%);
}

/* 10. もこもこ立体 */
.preset-thumb-10 {
  border: 1.5px solid var(--primary);
  border-radius: 12px;
  background-color: #f8fafc;
  box-shadow: 0 2px 0 #818cf8;
}

/* 11. ミニマルドット */
.preset-thumb-11 {
  border: none;
  border-bottom: 1.5px solid var(--primary);
  padding-left: 10px;
  justify-content: flex-start;
}
.preset-thumb-11::before {
  content: '';
  position: absolute;
  left: 2px; top: 50%;
  transform: translateY(-50%);
  width: 4px; height: 4px;
  background-color: var(--primary);
  border-radius: 50%;
}

/* 12. グラデーションカード */
.preset-thumb-12 {
  background: linear-gradient(135deg, var(--primary), #818cf8);
  color: #fff !important;
  border: none;
  border-radius: 4px;
}

/* 13. 英語サブ付 */
.preset-thumb-13 {
  border: none;
  border-bottom: 2px solid var(--primary);
  flex-direction: column;
  gap: 2px;
  font-size: 9px;
  padding-bottom: 2px;
}
.preset-thumb-13::before {
  content: 'RECOMMEND';
  display: block;
  font-size: 6px;
  color: var(--primary);
  font-weight: bold;
}

/* 14. グラデテキスト */
.preset-thumb-14 {
  background: none;
  color: transparent !important;
  -webkit-background-clip: text;
  background-image: linear-gradient(to right, var(--primary), #818cf8);
  border: 1px solid #cbd5e1;
}

/* 15. Wブロックドット */
.preset-thumb-15 {
  border: none;
  padding-left: 14px;
  justify-content: flex-start;
}
.preset-thumb-15::before, .preset-thumb-15::after {
  content: '';
  position: absolute;
  left: 3px;
  width: 4px; height: 4px;
  border-radius: 1px;
}
.preset-thumb-15::before {
  top: calc(50% - 5px);
  background-color: var(--primary);
}
.preset-thumb-15::after {
  top: calc(50% + 1px);
  background-color: #818cf8;
}

/* 16. レトロ3D影 */
.preset-thumb-16 {
  border: 1px solid #cbd5e1;
  text-shadow: 1.5px 1.5px 0px #818cf8;
}

/* 17. 上下ステッチ線 */
.preset-thumb-17 {
  border: none;
  border-top: 1.5px dashed var(--primary);
  border-bottom: 1.5px dashed var(--primary);
  background-color: #f8fafc;
}

/* 18. スラッシュ付 */
.preset-thumb-18 {
  border: none;
  padding-left: 12px;
  justify-content: flex-start;
}
.preset-thumb-18::before {
  content: '//';
  position: absolute;
  left: 2px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 8px;
  font-weight: bold;
}

/* 19. 左右水平線 */
.preset-thumb-19 {
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.preset-thumb-19::before, .preset-thumb-19::after {
  content: '';
  width: 15px;
  height: 1px;
  background-color: var(--primary);
}

/* 20. 角折れ付箋紙 */
.preset-thumb-20 {
  background: linear-gradient(135deg, transparent 6px, #fff 0);
  border: 1px solid #cbd5e1;
}
.preset-thumb-20::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  border-width: 0 6px 6px 0;
  border-style: solid;
  border-color: #fff #fff var(--primary) var(--primary);
}

/* 21. ダブル下線 */
.preset-thumb-21 {
  border: none;
  border-bottom: 3px double var(--primary);
}

/* 22. 隙間付縦棒 */
.preset-thumb-22 {
  border-left: 4px solid var(--primary);
  padding-left: 6px;
  justify-content: flex-start;
}
.preset-thumb-22::before {
  content: '';
  position: absolute;
  left: -3px;
  top: 0;
  width: 1px;
  height: 100%;
  background-color: #ffffff;
}

/* 23. ステッチ枠メモ */
.preset-thumb-23 {
  background-color: #f8fafc;
  border: 1.5px dashed var(--primary);
}

/* 24. 波線アンダー */
.preset-thumb-24 {
  border: none;
  background-image: radial-gradient(circle at 50% 120%, transparent 2px, var(--primary) 2px, var(--primary) 3px, transparent 3px);
  background-size: 6px 6px;
  background-repeat: repeat-x;
  background-position: bottom;
  padding-bottom: 2px;
}

/* 25. 左右斜め線 */
.preset-thumb-25 {
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.preset-thumb-25::before,
.preset-thumb-25::after {
  content: '';
  width: 2px;
  height: 18px;
  background-color: var(--primary);
}
.preset-thumb-25::before {
  transform: rotate(-35deg);
}
.preset-thumb-25::after {
  transform: rotate(35deg);
}


/* --- 調整パーツ調整領域 --- */
.control-group {
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 20px;
}
.control-group:last-child {
  margin-bottom: 0;
  border-bottom: none;
  padding-bottom: 0;
}
.control-group h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* 各種フォーム要素 */
.input-wrapper {
  margin-bottom: 12px;
}
.input-wrapper:last-child {
  margin-bottom: 0;
}
.input-wrapper label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.input-wrapper input[type="text"],
.input-wrapper select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-control);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
}
.input-wrapper input[type="text"]:focus,
.input-wrapper select:focus {
  outline: none;
  border-color: var(--primary);
  background-color: #fff;
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* カラーピッカーグリッド */
.color-picker-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.color-input-container {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.color-input-container label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}
.color-picker-wrapper {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-control);
  padding: 6px 10px;
  gap: 10px;
  justify-content: space-between;
  width: 100%;
}
.color-picker-wrapper input[type="color"] {
  -webkit-appearance: none;
  border: none;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}
.color-picker-wrapper input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}
.color-picker-wrapper input[type="color"]::-webkit-color-swatch {
  border: 1px solid var(--border-color);
  border-radius: 4px;
}
.hex-input {
  border: 1px solid var(--border-color);
  background-color: #ffffff;
  font-size: 12px;
  font-family: 'Outfit', monospace;
  color: var(--text-main);
  width: 75px;
  padding: 3px 6px;
  border-radius: 4px;
  font-weight: 600;
  text-transform: uppercase;
  outline: none;
  text-align: center;
  transition: all var(--transition-fast);
}
.hex-input:focus {
  border-color: var(--primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 2px var(--primary-light);
}

/* スライダー（レンジ入力） */
.slider-container {
  margin-bottom: 16px;
}
.slider-container:last-child {
  margin-bottom: 0;
}
.slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.slider-header label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}
.value-display {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background-color: var(--primary-light);
  padding: 2px 6px;
  border-radius: 4px;
}
.slider-container input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  outline: none;
}
.slider-container input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(79, 70, 229, 0.3);
  transition: transform var(--transition-fast);
}
.slider-container input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.25);
}
.slider-container select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-control);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

/* --- 右カラム：プレビューと出力コード --- */
.preview-output-panel {
  display: flex;
  flex-direction: column;
  gap: 30px;
  min-width: 0; /* 子要素がグリッドを突き破るのを防止 */
}
@media (min-width: 1151px) {
  .preview-output-panel {
    position: sticky;
    top: 20px;
    align-self: start;
    max-height: calc(100vh - 40px);
    overflow-y: auto;
    padding-right: 4px; /* スクロールバー用のマージン */
  }
  /* 右パネル内部スクロールバーの微調整 */
  .preview-output-panel::-webkit-scrollbar {
    width: 6px;
  }
  .preview-output-panel::-webkit-scrollbar-track {
    background: transparent;
  }
  .preview-output-panel::-webkit-scrollbar-thumb {
    background: var(--text-light);
    border-radius: 3px;
  }
}

/* プレビューエリア */
.preview-section {
  display: flex;
  flex-direction: column;
  height: 260px; /* 高さを少し増やしてスペースに余裕を持たせる */
  flex-shrink: 0;
}
.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}
.preview-header .section-title {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* 背景セレクター */
.bg-selector {
  display: flex;
  align-items: center;
  gap: 8px;
}
.bg-selector-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}
.bg-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}
.bg-btn:hover {
  transform: scale(1.15);
}
.bg-btn.active {
  border-color: var(--primary);
  transform: scale(1.15);
}
.bg-custom-picker {
  position: relative;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #eee;
  transition: all var(--transition-fast);
}
.bg-custom-picker:hover {
  transform: scale(1.15);
}
.bg-custom-picker.active {
  border-color: var(--primary);
  transform: scale(1.15);
}
.bg-custom-picker input[type="color"] {
  position: absolute;
  top: -5px; left: -5px;
  width: 34px; height: 34px;
  opacity: 0;
  cursor: pointer;
}
.picker-icon {
  font-size: 11px;
  pointer-events: none;
}

/* プレビュー本体 */
.preview-container {
  background-color: #ffffff;
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 40px; /* 上下の余白を減らしてコンテンツ高さを確保 */
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  transition: background-color var(--transition-normal);
  overflow-x: auto;
  overflow-y: hidden; /* 縦スクロールバーを強制非表示 */
}
#heading-container-wrapper {
  width: 100%;
  max-width: 700px;
}

/* --- コード出力セクション --- */
.output-section {
  display: flex;
  flex-direction: column;
  flex: 1; /* 残りの高さをすべて占有 */
}

/* タブデザイン */
.tab-container {
  background-color: var(--bg-control);
  border-radius: var(--radius-md);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1; /* コンテナ全体を縦に伸ばす */
}
.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}
.tab-btn {
  background: transparent;
  border: none;
  padding: 10px 6px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transition: all var(--transition-fast);
  text-align: center;
}
.tab-btn span {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-main);
}
.tab-btn small {
  font-size: 9px;
  color: var(--text-muted);
  font-weight: 500;
}
.tab-btn:hover {
  background-color: rgba(0,0,0,0.03);
}
.tab-btn.active {
  background-color: #fff;
  box-shadow: var(--shadow-sm);
}
.tab-btn.active span {
  color: var(--primary);
}

/* コード表示ボックス */
.tab-content {
  background-color: #0f172a;
  border-radius: var(--radius-sm);
  padding: 16px;
  display: flex;
  flex-direction: column;
  position: relative;
  flex: 1; /* 縦に伸ばす */
  min-height: 0; /* 内包スクロールを有効にするためのハック */
}
.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  border-bottom: 1px solid #1e293b;
  padding-bottom: 8px;
}
.code-lang-tag {
  font-size: 11px;
  font-family: 'Outfit', monospace;
  color: var(--text-light);
  font-weight: 600;
  letter-spacing: 0.5px;
}
.copy-btn {
  background-color: var(--primary);
  border: none;
  color: #fff;
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all var(--transition-fast);
}
.copy-btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
}
.copy-btn:active {
  transform: translateY(0);
}
.copy-icon {
  flex-shrink: 0;
}

.code-wrapper {
  overflow-x: auto;
  flex: 1; /* 余った高さをすべて占有 */
  max-height: none; /* 固定値の制限を解除 */
}
.code-wrapper pre {
  margin: 0;
}
.code-wrapper code {
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 13px;
  color: #e2e8f0;
  white-space: pre;
  line-height: 1.5;
}

/* WordPressヒントボックス */
.wp-tip-box {
  margin-top: 20px;
  background-color: rgba(245, 158, 11, 0.08);
  border-left: 4px solid #f59e0b;
  border-radius: 4px;
  padding: 14px 18px;
  display: flex;
  gap: 12px;
}
.tip-icon {
  font-size: 20px;
  line-height: 1;
}
.tip-content h4 {
  font-size: 13px;
  font-weight: 700;
  color: #b45309;
  margin-bottom: 4px;
}
.tip-content p {
  font-size: 12px;
  color: #78350f;
  line-height: 1.5;
}

/* --- コピー完了トースト --- */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: #0f172a;
  color: #fff;
  padding: 12px 24px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-lg);
  font-size: 14px;
  font-weight: 600;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  z-index: 9999;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}
.toast-icon {
  background-color: var(--success);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
}

/* --- フィードバック / お問い合わせボックス --- */
.feedback-box {
  margin-top: 16px;
  background-color: rgba(79, 70, 229, 0.05);
  border: 1px solid rgba(79, 70, 229, 0.15);
  border-left: 4px solid var(--primary);
  border-radius: 4px;
  padding: 14px 18px;
  display: flex;
  gap: 12px;
}
.feedback-icon {
  font-size: 20px;
  line-height: 1;
}
.feedback-content h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}
.feedback-content p {
  font-size: 12px;
  color: var(--text-main);
  line-height: 1.6;
}
.feedback-link {
  color: var(--primary);
  font-weight: 700;
  text-decoration: underline;
  transition: color var(--transition-fast);
}
.feedback-link:hover {
  color: var(--primary-hover);
}
.feedback-note {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* --- フッター --- */
.app-footer {
  margin-top: 40px;
  text-align: center;
  color: var(--text-light);
  font-size: 12px;
  font-weight: 500;
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}


/* --- レスポンシブ (タブレット・モバイル) --- */
@media (max-width: 1150px) {
  .app-main {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .app-container {
    padding: 20px 15px;
  }
}

@media (max-width: 640px) {
  .tabs {
    grid-template-columns: repeat(2, 1fr);
  }
  .tab-btn {
    padding: 8px 4px;
  }
  .preview-container {
    padding: 24px 16px;
  }
  .preset-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- チェックボックス用フレックスレイアウト --- */
.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  cursor: pointer;
}
.checkbox-wrapper input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
  accent-color: var(--primary);
  margin: 0;
}
.checkbox-wrapper label {
  margin-bottom: 0;
  cursor: pointer;
  user-select: none;
}