/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ライトテーマ（デフォルト） */
:root {
    --primary-color: #1e40af;        /* 濃い青 */
    --primary-hover: #1d4ed8;        /* ホバー時の青 */
    --secondary-color: #059669;      /* 濃い緑 */
    --accent-color: #dc2626;         /* 濃い赤 */
    --success-color: #16a34a;        /* 成功の緑 */
    --warning-color: #ea580c;        /* 警告のオレンジ */
    --error-color: #dc2626;          /* エラーの赤 */
    
    --text-primary: #111827;         /* ほぼ黒のテキスト */
    --text-secondary: #374151;       /* 濃いグレーのテキスト */
    --text-muted: #6b7280;           /* ミディアムグレー */
    --text-inverse: #ffffff;         /* 白色テキスト */
    
    --bg-primary: #ffffff;           /* 純白の背景 */
    --bg-secondary: #f9fafb;         /* 薄いグレー背景 */
    --bg-accent: #f3f4f6;            /* アクセント背景 */
    --bg-gradient: linear-gradient(135deg, #1e293b 0%, #334155 30%, #64748b 100%);
    
    --border-color: #d1d5db;         /* ボーダー色 */
    --border-dark: #9ca3af;          /* 濃いボーダー色 */
    
    /* セレクトボックス統一スタイル */
    --select-bg: #ffffff;            /* セレクトボックス背景 */
    --select-border: #9ca3af;        /* セレクトボックス境界線 */
    --select-border-focus: #1e40af;  /* フォーカス時境界線 */
    --select-text: #111827;          /* セレクトボックステキスト */
    --select-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
    --select-shadow-focus: 0 0 0 3px rgba(30, 64, 175, 0.2);
    
    --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-strong: 0 8px 32px rgba(0, 0, 0, 0.16);
    
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --modal-bg: #ffffff;
    --modal-overlay: rgba(0, 0, 0, 0.5);
    
    /* レシピツリー用の色設定 */
    --tree-recipe-bg: rgba(59, 130, 246, 0.1);
    --tree-recipe-border: #3b82f6;
    --tree-ingredient-bg: #dcfce7;
    --tree-ingredient-border: #16a34a;
    --tree-line-color: #9ca3af;
    
    /* スクロールバー用の色設定（ライトテーマ） */
    --scrollbar-track: #f3f4f6;
    --scrollbar-thumb: linear-gradient(135deg, #1e40af, #dc2626);
    --scrollbar-thumb-hover: linear-gradient(135deg, #1d4ed8, #b91c1c);
}

/* ===== ダークテーマ設定 ===== */
[data-theme="dark"] {
    --primary-color: #3b82f6;        /* 明るい青 */
    --primary-hover: #2563eb;        /* ホバー時の青 */
    --secondary-color: #10b981;      /* 明るい緑 */
    --accent-color: #ef4444;         /* 明るい赤 */
    --success-color: #22c55e;        /* 成功の緑 */
    --warning-color: #f59e0b;        /* 警告のオレンジ */
    --error-color: #ef4444;          /* エラーの赤 */
    
    --text-primary: #f9fafb;         /* ほぼ白のテキスト */
    --text-secondary: #d1d5db;       /* 薄いグレーのテキスト */
    --text-muted: #9ca3af;           /* ミディアムグレー */
    --text-inverse: #111827;         /* 黒色テキスト */
    
    --bg-primary: #111827;           /* ダーク背景 */
    --bg-secondary: #1f2937;         /* セカンダリダーク背景 */
    --bg-accent: #374151;            /* アクセント背景 */
    --bg-hover: #374151;             /* ホバー時背景 */
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 30%, #334155 100%);
    
    --border-color: #374151;         /* ダークボーダー色 */
    --border-dark: #4b5563;          /* より濃いボーダー色 */
    
    /* セレクトボックス統一スタイル（ダーク） */
    --select-bg: #1f2937;            /* ダークセレクトボックス背景 */
    --select-border: #4b5563;        /* ダークセレクトボックス境界線 */
    --select-border-focus: #3b82f6;  /* フォーカス時境界線 */
    --select-text: #f9fafb;          /* ダークセレクトボックステキスト */
    --select-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    --select-shadow-focus: 0 0 0 3px rgba(59, 130, 246, 0.3);
    
    --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-strong: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --card-bg: rgba(31, 41, 55, 0.95);
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --modal-bg: #1f2937;
    --modal-overlay: rgba(0, 0, 0, 0.7);
    
    /* レシピツリー用の色（ダークテーマ） */
    --tree-recipe-bg: rgba(59, 130, 246, 0.2);
    --tree-recipe-border: #60a5fa;
    --tree-ingredient-bg: rgba(34, 197, 94, 0.2);
    --tree-ingredient-border: #22c55e;
    --tree-line-color: #6b7280;
    
    /* スクロールバー用の色調整（ダークテーマ） */
    --scrollbar-track: #374151;
    --scrollbar-thumb: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --scrollbar-thumb-hover: linear-gradient(135deg, #2563eb, #7c3aed);
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

/* ===== 統一スクロールバーデザイン ===== */
/* 全体のスクロールバー */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 6px;
    border: 2px solid var(--bg-secondary);
    transition: all 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

::-webkit-scrollbar-thumb:active {
    background: var(--primary-hover);
    transform: scale(0.95);
}

::-webkit-scrollbar-corner {
    background: var(--bg-secondary);
}

/* スクロールバーのアニメーション */
@keyframes scrollbarPulse {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* スクロール中のアニメーション */
::-webkit-scrollbar-thumb:hover {
    animation: scrollbarPulse 2s infinite;
}

/* 薄いスクロールバー（モーダル内など） */
.thin-scrollbar::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.thin-scrollbar::-webkit-scrollbar-track {
    background: var(--bg-accent);
    border-radius: 4px;
}

.thin-scrollbar::-webkit-scrollbar-thumb {
    background: var(--border-dark);
    border-radius: 4px;
    border: 1px solid var(--bg-accent);
}

.thin-scrollbar::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

/* Main Content */
.main-content {
    margin-top: 60px;
    min-height: calc(100vh - 60px);
    padding: 30px 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    height: 60px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    backdrop-filter: none;
}

/* ダークテーマでのヘッダー背景 */
[data-theme="dark"] .header {
    background: #111827;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.logo i {
    margin-right: 8px;
    color: var(--primary-color);
}

.subtitle {
    display: none;
}

/* テーマスイッチ */
.theme-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-light);
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
    transform: scale(1.1);
    box-shadow: var(--shadow-medium);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle i {
    transition: transform 0.3s ease;
}

.theme-toggle:hover i {
    transform: rotate(15deg);
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.section-header h2 {
    font-size: 2rem;
    color: white;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 15px;
}

.section-header h2 i {
    color: #d4a574;
}

/* Cards */
.recipe-card, .inventory-card, .calculator-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.recipe-card:hover, .inventory-card:hover, .calculator-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* Main Recipe Card */
.main-recipe {
    background: linear-gradient(135deg, #bdc3c7 0%, #ecf0f1 50%, #d5dbdb 100%);
    color: #2c3e50;
}

.recipe-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
}

.recipe-header h3 {
    font-size: 2rem;
    font-weight: 600;
}

.recipe-count {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.3);
    padding: 15px 20px;
    border-radius: 15px;
}

.count-label {
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.8;
}

.count-number {
    font-size: 2rem;
    font-weight: 700;
    color: #34495e;
}

/* Ingredients Grid */
.ingredients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.ingredient-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.ingredient-item:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.02);
}

.ingredient-icon {
    font-size: 1.5rem;
    color: #5d6d7e;
    width: 30px;
    text-align: center;
}

.ingredient-name {
    flex: 1;
    font-weight: 500;
    white-space: nowrap;
    overflow: visible;
    min-width: 60px;
}

.ingredient-amount {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary-color);
    margin: 0;
    line-height: 1;
}

/* Sub Recipes */
.sub-recipes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 500px));
    gap: 25px;
    justify-content: center;
    max-width: 1600px;
    margin: 0 auto;
}

.sub-recipe {
    background: linear-gradient(135deg, #dfe6e9 0%, #b2bec3 100%);
    max-width: 100%;
    width: 100%;
    padding: 25px 20px;
}

.sub-recipe h4 {
    font-size: 1.3rem;
    margin-bottom: 25px;
    color: #2c3e50;
    text-align: center;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(93, 109, 126, 0.2);
}

.recipe-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    flex-wrap: nowrap;
    min-height: 100px;
    padding: 10px 5px;
}

.ingredients-mini {
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-width: 160px;
    flex: 1;
    max-width: 200px;
}

.ingredients-mini .ingredient-item {
    padding: 10px 12px;
    font-size: 0.9rem;
    margin-bottom: 2px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 10px;
    white-space: nowrap;
    overflow: visible;
    min-width: 140px;
}

.ingredients-mini .ingredient-item:last-child {
    margin-bottom: 0;
}

.flow-arrow {
    font-size: 1.8rem;
    color: #5d6d7e;
    animation: pulse 2s infinite;
    flex-shrink: 0;
    margin: 0 8px;
    align-self: center;
    min-width: 30px;
    text-align: center;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.result-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(93, 109, 126, 0.15);
    border-radius: 12px;
    border: 2px solid #5d6d7e;
    min-width: 160px;
    max-width: 200px;
    flex: 1;
    font-weight: 500;
    white-space: nowrap;
    overflow: visible;
}

/* Inventory Section */
.inventory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.inventory-card {
    display: flex;
    align-items: center;
    position: relative;
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px 20px;
    transition: all 0.3s ease;
    min-height: 70px;
    gap: 15px;
}

/* チェック状態のインベントリカード */
.inventory-card.checked {
    background: linear-gradient(135deg, #d4f5d4 0%, #a8e6a8 100%);
    border: 2px solid #28a745;
    box-shadow: 0 4px 20px rgba(40, 167, 69, 0.3);
}

/* インベントリアイテムのレイアウト */
.inventory-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
    position: relative;
}

/* チェックボックスコンテナ */
.inventory-checkbox-container {
    position: absolute;
    top: -10px;
    right: -10px;
    z-index: 10;
}

/* カスタムチェックボックス */
.inventory-checkbox {
    display: none;
}

.inventory-checkbox-container {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 10;
}

.checkbox-label {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: var(--input-background);
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-label:hover {
    border-color: #28a745;
    transform: scale(1.1);
    box-shadow: 0 0 5px rgba(40, 167, 69, 0.5);
}

.inventory-checkbox:checked + .checkbox-label {
    background: #28a745;
    border-color: #28a745;
}

.inventory-checkbox:checked + .checkbox-label::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 16px;
    font-weight: bold;
}

/* アイコンと名前のスタイル */
.ingredient-icon {
    font-size: 2rem;
    color: var(--primary-color);
    transition: color 0.3s ease;
    flex-shrink: 0;
}

.ingredient-info {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-width: 0;
    padding-right: 35px;
}

.inventory-card.checked .ingredient-icon {
    color: #28a745;
}

.ingredient-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0 0 4px 0;
    transition: color 0.3s ease;
    line-height: 1.2;
    max-width: 130px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: help;
}

.inventory-card.checked .ingredient-name {
    color: #1e7e34;
}

.inventory-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    color: #6c757d;
}

.inventory-card h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #333;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 在庫量表示エリア */
.inventory-amounts {
    margin-bottom: 15px;
}

.current-amount, .needed-amount {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding: 8px 15px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 10px;
    white-space: nowrap;
    transition: background 0.3s ease;
}

.inventory-card.checked .current-amount,
.inventory-card.checked .needed-amount {
    background: rgba(255, 255, 255, 0.8);
}

/* 適用されない古いスタイルを維持するためのフォールバック */
.stock-info, .needed-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding: 8px 15px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    white-space: nowrap;
}

.stock-input, .inventory-input {
    width: 70px;
    padding: 6px 10px;
    border: 2px solid var(--select-border);
    border-radius: 6px;
    background: var(--select-bg);
    color: var(--select-text);
    font-weight: 700;
    font-size: 1rem;
    text-align: center;
    transition: all 0.3s ease;
}

.inventory-card.checked .inventory-input {
    border-color: #28a745;
    background: rgba(40, 167, 69, 0.1);
}

.stock-input:focus {
    outline: none;
    border-color: var(--select-border-focus);
    background: var(--select-bg);
    box-shadow: var(--select-shadow-focus);
}

.stock-input:hover {
    border-color: var(--select-border-focus);
    background: var(--bg-secondary);
}

.stock-amount, .needed-amount span {
    font-weight: 700;
    font-size: 1.1rem;
    white-space: nowrap;
}

.stock-label, .needed-label, .current-amount label {
    font-size: 0.9rem;
    opacity: 0.8;
    white-space: nowrap;
    font-weight: 500;
}

.inventory-card.checked .current-amount label,
.inventory-card.checked .needed-amount span {
    color: #1e7e34;
    font-weight: 600;
}

.status-indicator {
    position: absolute;
    top: 15px;
    left: 15px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    color: white;
    animation: glow 2s infinite;
    transition: all 0.3s ease;
}

.status-indicator.sufficient {
    background: #28a745;
    box-shadow: 0 0 10px #28a745;
}

.status-indicator.insufficient {
    background: #dc3545;
    box-shadow: 0 0 10px #dc3545;
}

.inventory-card.checked .status-indicator {
    transform: scale(1.1);
}

@keyframes glow {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Calculator Section */
.calculator-card {
    background: linear-gradient(135deg, #b2bec3 0%, #dfe6e9 100%);
}

.calculator-input {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.calculator-input label {
    font-weight: 500;
    color: #333;
    font-size: 1.1rem;
    white-space: nowrap;
}

.calculator-input input {
    padding: 12px 15px;
    border: 2px solid #ddd;
    border-radius: 10px;
    font-size: 1rem;
    width: 120px;
    text-align: center;
}

.calculator-input button, .check-btn {
    padding: 12px 25px;
    background: linear-gradient(135deg, #5d6d7e 0%, #34495e 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.calculator-input button:hover, .check-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.calculation-result {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 15px;
    min-height: 100px;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
}

/* 計算ヘッダーのスタイル */
.calculation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.08), rgba(30, 64, 175, 0.04));
    border-radius: 12px;
    border: 2px solid var(--primary-color);
    border-left: 6px solid var(--primary-color);
}

.calculation-header h4 {
    margin: 0;
    color: var(--primary-color);
    font-size: 1.3em;
    font-weight: 600;
}

/* 在庫コントロールボタン */
.inventory-controls {
    display: flex;
    gap: 10px;
}

.control-btn {
    padding: 8px 16px;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--primary-color);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.control-btn:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

.control-btn:active {
    transform: translateY(0);
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 50px;
    padding: 30px;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    color: white;
    font-weight: 300;
}

/* Responsive Design */
/* タブレット向けレスポンシブ対応 */
@media (max-width: 1024px) and (min-width: 769px) {
    .section-header {
        gap: 12px;
    }
    
    .management-buttons {
        gap: 8px;
    }
    
    .management-btn {
        font-size: 0.85rem;
        padding: 10px 16px;
        height: 42px;
    }
    
    .recipe-search-bar {
        min-width: 180px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .logo {
        font-size: 2rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .management-buttons {
        width: 100%;
        justify-content: flex-start;
        gap: 8px;
    }
    
    .management-btn {
        flex: 1;
        min-width: 120px;
        max-width: 150px;
        font-size: 0.8rem;
        padding: 10px 12px;
        height: 40px;
    }
    
    .recipe-search-bar {
        width: 100%;
        margin-bottom: 15px;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .recipe-header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .recipe-flow {
        flex-direction: column;
        gap: 15px;
        min-height: auto;
        padding: 15px 5px;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
        margin: 5px 0;
    }
    
    .ingredients-mini, .result-item {
        max-width: 100%;
        min-width: auto;
    }
    
    .ingredients-mini .ingredient-item {
        min-width: auto;
    }
    
    .calculator-input {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .calculator-input input {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .ingredients-grid {
        grid-template-columns: 1fr;
    }
    
    .sub-recipes-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .inventory-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

/* 大画面用の最適化 */
@media (min-width: 1200px) {
    .container {
        max-width: 1400px;
    }
    
    .sub-recipes-grid {
        grid-template-columns: repeat(3, 480px);
        justify-content: center;
    }
    
    .ingredients-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 300px));
        justify-content: center;
        max-width: 1200px;
        margin: 0 auto;
    }
    
    .inventory-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 250px));
        justify-content: center;
        max-width: 1400px;
        margin: 0 auto;
    }
}

@media (min-width: 1600px) {
    .container {
        max-width: 1600px;
    }
    
    .sub-recipes-grid {
        grid-template-columns: repeat(3, 520px);
        gap: 30px;
    }
    
    .recipe-flow {
        gap: 20px;
        padding: 15px 10px;
    }
    
    .flow-arrow {
        font-size: 2rem;
        margin: 0 12px;
    }
    
    .ingredients-mini, .result-item {
        min-width: 180px;
        max-width: 220px;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Success/Error States */
.success-message {
    background: #52c41a;
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    margin: 10px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.error-message {
    background: #ff4d4f;
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    margin: 10px 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Loading States */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Recipe Management Section */
.recipe-management-card {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(143, 130, 255, 0.1));
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    padding: 30px;
    margin-bottom: 30px;
    backdrop-filter: blur(15px);
    border: 2px solid rgba(74, 144, 226, 0.3);
    position: relative;
    overflow: visible;
    z-index: 1;
}

.recipe-management-section {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.08), rgba(143, 130, 255, 0.08));
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    padding: 30px;
    margin: 30px 0;
    backdrop-filter: blur(15px);
    border: 2px solid rgba(74, 144, 226, 0.25);
    position: relative;
    overflow: visible;
    z-index: 1;
}

.recipe-management-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color), var(--primary-color));
    opacity: 0.8;
}

.recipe-management-card h2 {
    color: var(--text-primary);
    margin-bottom: 25px;
    font-size: 1.5em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.recipe-management-card h2 i {
    color: var(--accent-color);
    font-size: 1.2em;
}

/* 検索バー */
.recipe-search-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
    flex-shrink: 1;
    min-width: 200px;
}

.recipe-search-bar input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid rgba(74, 144, 226, 0.3);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    height: 44px;
    box-sizing: border-box;
}

.recipe-search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
    background: rgba(255, 255, 255, 1);
}

.recipe-search-bar input::placeholder {
    color: rgba(44, 62, 80, 0.6);
}

.search-btn {
    padding: 12px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    min-width: 60px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(74, 144, 226, 0.4);
}

.main-recipe-selector {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.main-recipe-selector label {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
}

.main-recipe-selector select {
    min-width: 200px;
    background-color: var(--select-bg) !important;
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 2px solid var(--select-border) !important;
}

.main-recipe-selector select:focus {
    background-color: #fefefe !important;
    border-color: var(--select-border-focus) !important;
}

/* main-recipe-selector内のoption要素もダークテーマ対応 */
.main-recipe-selector select option {
    background-color: var(--select-bg) !important;
    color: var(--select-text) !important;
    padding: 8px 12px;
}

.main-recipe-selector select option:hover {
    background-color: var(--primary-color) !important;
    color: var(--text-inverse) !important;
}

.add-main-recipe-btn {
    padding: 12px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    font-weight: 500;
}

.add-main-recipe-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(123, 97, 255, 0.4);
}

.management-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 25px;
    align-items: center;
    justify-content: flex-end;
    flex-shrink: 0;
}

.management-btn {
    font-size: 0.9rem;
    padding: 12px 20px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    height: 44px;
    white-space: nowrap;
}

.management-btn.primary {
    background: #4A90E2;
    color: white;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.management-btn.secondary {
    background: #6C7B7F;
    color: white;
    box-shadow: 0 4px 15px rgba(108, 123, 127, 0.3);
}

.management-btn.tertiary {
    background: #95A5A6;
    color: #2C3E50;
    box-shadow: 0 4px 15px rgba(149, 165, 166, 0.3);
}

.management-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.management-btn.primary:hover {
    box-shadow: 0 8px 25px rgba(74, 144, 226, 0.4);
}

.management-btn.secondary:hover {
    box-shadow: 0 8px 25px rgba(108, 123, 127, 0.4);
}

.management-btn.tertiary:hover {
    box-shadow: 0 8px 25px rgba(149, 165, 166, 0.4);
}

.management-btn.danger {
    background: #dc3545;
    color: white;
    border: 2px solid #dc3545;
}

.management-btn.danger:hover {
    background: #c82333;
    box-shadow: 0 8px 25px rgba(220, 53, 69, 0.4);
    transform: translateY(-2px);
}

/* レシピグリッド表示（大量レシピ対応） */
.recipe-list-header {
    margin-bottom: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.recipe-count-info {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.count-badge {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 500;
}

.performance-tip {
    color: #f39c12;
    font-size: 0.85em;
    font-style: italic;
}

.recipe-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 15px;
    height: 100%;
    overflow-y: auto;
    padding: 10px;
}

/* レシピグリッドのスクロールバー */
.recipe-grid-container::-webkit-scrollbar {
    width: 10px;
}

.recipe-grid-container::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 5px;
    border: 1px solid var(--border-color);
}

.recipe-grid-container::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 5px;
    border: 1px solid var(--bg-secondary);
    transition: all 0.3s ease;
}

.recipe-grid-container::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.recipe-grid-item {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    overflow: hidden;
    height: 180px; /* 縦サイズを半分程度に制限 */
}

.recipe-grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.recipe-grid-item.main-recipe {
    border: 2px solid var(--accent-color);
    background: linear-gradient(135deg, rgba(143, 130, 255, 0.1), rgba(255, 255, 255, 0.95));
}

.recipe-card-mini {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    height: 100%;
    justify-content: space-between;
}

.recipe-icon-large {
    text-align: center;
    font-size: 1.8em;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.recipe-name {
    margin: 0;
    font-size: 1em;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    line-height: 1.2;
}

.recipe-type-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 0.7em;
    font-weight: 500;
    text-align: center;
    margin: 3px 0;
}

.recipe-type-badge.basic {
    background: #e8f5e8;
    color: #2d5a2d;
}

.recipe-type-badge.recipe {
    background: #e3f2fd;
    color: #1565c0;
}

.recipe-desc {
    display: none; /* 説明テキストを非表示 */
}

.ingredient-count {
    font-size: 0.75em;
    color: #888;
    text-align: center;
    margin: 1px 0;
}

.recipe-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: auto;
}

.action-btn {
    padding: 6px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.8em;
    min-width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn.edit {
    background: #3498db;
    color: white;
}

.action-btn.select {
    background: #27ae60;
    color: white;
}

.action-btn.delete {
    background: #e74c3c;
    color: white;
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* ウェルカムセクション */
.welcome-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    margin: 0 auto;
    padding: 40px;
    width: 100%;
}

.welcome-card {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(143, 130, 255, 0.1));
    border-radius: 25px;
    padding: 60px 80px;
    text-align: center;
    width: 900px;
    max-width: 90vw;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin: 0 auto;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(15px);
    border: 2px solid rgba(74, 144, 226, 0.2);
}

.welcome-icon {
    font-size: 4em;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.welcome-card h2 {
    color: var(--text-primary);
    font-size: 2.2em;
    margin-bottom: 20px;
    font-weight: 600;
}

.welcome-description {
    color: var(--text-secondary);
    font-size: 1.1em;
    line-height: 1.6;
    margin-bottom: 30px;
}

.welcome-actions {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
}

.welcome-btn {
    padding: 18px 40px;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 220px;
    justify-content: center;
}

.welcome-btn.primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.3);
}

.welcome-btn.secondary {
    background: linear-gradient(135deg, #6C7B7F, #8A9BA8);
    color: white;
    box-shadow: 0 6px 20px rgba(108, 123, 127, 0.3);
}

.welcome-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.welcome-btn.primary:hover {
    box-shadow: 0 10px 30px rgba(74, 144, 226, 0.4);
}

.welcome-btn.secondary:hover {
    box-shadow: 0 10px 30px rgba(108, 123, 127, 0.4);
}

.recipe-stats {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    margin-top: 10px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.08);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

.stat-item:hover::before {
    opacity: 1;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
    font-weight: 500;
}

.stat-value {
    font-size: 2.2em;
    font-weight: 700;
    color: var(--accent-color);
    display: block;
    margin-bottom: 5px;
}

/* Modal Styles */
/* モーダル表示時のbodyスクロール無効化 */
body.modal-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-overlay);
    backdrop-filter: blur(5px);
}

/* レシピマネージャーモーダル（編集用）をより高いz-indexに */
#recipeManagerModal {
    z-index: 1100;
}

/* 材料追加モーダルをさらに高いz-indexに */
#addIngredientModal {
    z-index: 1200;
}

.modal-content {
    background: var(--modal-bg);
    margin: 3% auto;
    border-radius: 20px;
    width: 95%;
    max-width: 1200px;
    height: 75vh; /* クライアント領域の75%に設定 */
    max-height: 75vh;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-strong);
    animation: modalSlideIn 0.3s ease-out;
    border: 1px solid var(--border-color);
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes modalSlideOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-50px); }
}

.modal-content.closing {
    animation: modalSlideOut 0.3s ease-in forwards;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 2px solid var(--border-color);
}

.modal-header h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin: 0;
}

.close {
    font-size: 2rem;
    font-weight: bold;
    color: #adb5bd;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #6c757d;
}

.modal-body {
    padding: 25px;
    flex: 1;
    overflow-y: auto;
    min-height: 0; /* フレックスアイテムの高さを正しく制限 */
}

/* モーダル内容のスクロールバー */
.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: var(--bg-accent);
    border-radius: 4px;
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--border-dark);
    border-radius: 4px;
    border: 1px solid var(--bg-accent);
    transition: all 0.3s ease;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 20px 25px;
    border-top: 2px solid var(--border-color);
}

/* 統一セレクトボックススタイル */
.unified-select, 
select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--select-border);
    border-radius: 8px;
    background-color: var(--select-bg);
    color: var(--select-text);
    font-size: 1rem;
    font-family: inherit;
    line-height: 1.5;
    box-shadow: var(--select-shadow);
    transition: all 0.3s ease;
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    /* 下向き矢印を作成（正しい向き） */
    background-image: linear-gradient(45deg, transparent 50%, var(--select-text) 50%),
                      linear-gradient(135deg, var(--select-text) 50%, transparent 50%);
    background-position: calc(100% - 20px) calc(50% + 2px),
                         calc(100% - 15px) calc(50% + 2px);
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
}

.unified-select:focus,
select:focus {
    outline: none;
    border-color: var(--select-border-focus);
    box-shadow: var(--select-shadow-focus);
    background-color: #fefefe;
}

.unified-select:hover:not(:disabled),
select:hover:not(:disabled) {
    border-color: var(--primary-color);
    background-color: var(--bg-secondary);
}

/* ダークテーマでのselect要素ホバー時の改善 */
[data-theme="dark"] select:hover:not(:disabled) {
    background-color: #374151 !important;
    border-color: #3b82f6 !important;
}

.unified-select:disabled,
select:disabled {
    background-color: #f3f4f6;
    color: #9ca3af;
    cursor: not-allowed;
    opacity: 0.6;
}

/* 具体的なセレクトボックスにも統一スタイルを強制適用 */
.recipe-selector select,
.recipe-filter select,
.form-group select {
    border: 2px solid var(--select-border) !important;
    border-radius: 8px !important;
    background-color: var(--select-bg) !important;
    color: var(--select-text) !important;
    box-shadow: var(--select-shadow) !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    background-image: linear-gradient(45deg, transparent 50%, var(--select-text) 50%),
                      linear-gradient(135deg, var(--select-text) 50%, transparent 50%) !important;
    background-position: calc(100% - 20px) calc(50% + 2px),
                         calc(100% - 15px) calc(50% + 2px) !important;
    background-size: 5px 5px, 5px 5px !important;
    background-repeat: no-repeat !important;
}

/* select要素のoption要素もダークテーマに対応 */
select option {
    background-color: var(--select-bg) !important;
    color: var(--select-text) !important;
    padding: 8px 12px;
}

select option:hover,
select option:focus {
    background-color: var(--primary-color) !important;
    color: var(--text-inverse) !important;
}

select option:checked {
    background-color: var(--primary-color) !important;
    color: var(--text-inverse) !important;
}

/* ダークテーマ用のoption要素の強制スタイル */
[data-theme="dark"] select option {
    background: #1f2937 !important;
    color: #f9fafb !important;
    border: none !important;
}

[data-theme="dark"] select option:hover,
[data-theme="dark"] select option:focus,
[data-theme="dark"] select option:active {
    background: #3b82f6 !important;
    color: #ffffff !important;
    background-color: #3b82f6 !important;
}

[data-theme="dark"] select option:checked,
[data-theme="dark"] select option[selected] {
    background: #3b82f6 !important;
    color: #ffffff !important;
    background-color: #3b82f6 !important;
}

/* より強力なセレクター for WebKit browsers */
[data-theme="dark"] select:focus option:hover {
    background: #3b82f6 !important;
    background-color: #3b82f6 !important;
    color: #ffffff !important;
}

/* Firefox specific */
@-moz-document url-prefix() {
    [data-theme="dark"] select option {
        background-color: #1f2937 !important;
        color: #f9fafb !important;
    }
    
    [data-theme="dark"] select option:hover {
        background-color: #3b82f6 !important;
        color: #ffffff !important;
    }
}

/* 
  カスタムドロップダウンコンポーネント
  div要素で実装され、完全なスタイル制御とダークテーマ対応を提供
*/

/* カスタムドロップダウンコンテナ */
.custom-dropdown {
    position: relative;
    display: inline-block;
    width: 100%;
    z-index: 10;
}

/* ドロップダウンボタン（選択表示部分） */
.custom-dropdown-button {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--select-border);
    border-radius: 8px;
    background: var(--select-bg);
    color: var(--select-text);
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    box-shadow: var(--select-shadow);
    user-select: none;
    min-height: 48px;
}

.custom-dropdown-button:hover {
    border-color: var(--select-border-focus);
    background: var(--bg-secondary);
}

.custom-dropdown-button.focused {
    border-color: var(--select-border-focus);
    box-shadow: var(--select-shadow-focus);
}

/* ドロップダウン矢印 */
.custom-dropdown-arrow {
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--select-text);
    transition: transform 0.3s ease;
    margin-left: 8px;
}

.custom-dropdown.open .custom-dropdown-arrow {
    transform: rotate(180deg);
}

/* ドロップダウンメニュー */
.custom-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 200;
    background: var(--select-bg);
    border: 2px solid var(--select-border-focus);
    border-radius: 8px;
    box-shadow: var(--shadow-strong);
    max-height: 320px;
    min-width: 200px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    margin-top: 2px;
}

/* モーダル内のドロップダウンメニューは高いz-indexを使用 */
.modal .custom-dropdown-menu {
    z-index: 1300;
}

.custom-dropdown.open .custom-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.custom-dropdown.open {
    z-index: 250;
}

/* ドロップダウンオプション */
.custom-dropdown-option {
    padding: 14px 18px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    color: var(--select-text);
    background: transparent;
    min-height: 48px;
    font-size: 1rem;
    line-height: 1.4;
}

.custom-dropdown-option:last-child {
    border-bottom: none;
}

.custom-dropdown-option:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
}

.custom-dropdown-option.selected {
    background: var(--primary-color);
    color: var(--text-inverse);
    font-weight: 600;
}

.custom-dropdown-option.disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    font-style: italic;
}

.custom-dropdown-option.disabled:hover {
    background: transparent;
    color: var(--text-muted);
}

/* 検索機能付きドロップダウン */
.custom-dropdown-search {
    padding: 12px 16px;
    border: none;
    border-bottom: 2px solid var(--border-color);
    background: var(--select-bg);
    color: var(--select-text);
    width: 100%;
    font-size: 1rem;
    outline: none;
    min-height: 44px;
    box-sizing: border-box;
}

.custom-dropdown-search:focus {
    border-bottom-color: var(--select-border-focus);
}

.custom-dropdown-search::placeholder {
    color: var(--text-muted);
}

/* 新規追加オプション */
.custom-dropdown-add-new {
    padding: 14px 18px;
    color: var(--primary-color);
    font-weight: 600;
    border-top: 2px solid var(--border-color);
    background: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
    min-height: 48px;
    font-size: 1rem;
}

.custom-dropdown-add-new:hover {
    background: var(--primary-color);
    color: var(--text-inverse);
}

.custom-dropdown-add-new i {
    font-size: 0.9rem;
}

/* カスタムドロップダウンメニューのスクロールバー */
.custom-dropdown-menu::-webkit-scrollbar {
    width: 8px;
}

.custom-dropdown-menu::-webkit-scrollbar-track {
    background: var(--bg-accent);
    border-radius: 4px;
}

.custom-dropdown-menu::-webkit-scrollbar-thumb {
    background: var(--border-dark);
    border-radius: 4px;
    border: 1px solid var(--bg-accent);
    transition: all 0.3s ease;
}

.custom-dropdown-menu::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

/* 小さいサイズのドロップダウン */
.custom-dropdown.small .custom-dropdown-button {
    padding: 8px 12px;
    font-size: 0.9rem;
}

.custom-dropdown.small .custom-dropdown-option {
    padding: 8px 12px;
    font-size: 0.9rem;
}

/* フレックスコンテナ内での調整 */
.ingredient-entry .custom-dropdown {
    flex: 2;
}

/* アニメーション */
@keyframes dropdownSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.custom-dropdown-menu.animate-in {
    animation: dropdownSlideIn 0.3s ease-out;
}

.recipe-selector select:focus,
.recipe-filter select:focus,
.form-group select:focus {
    border-color: var(--select-border-focus) !important;
    box-shadow: var(--select-shadow-focus) !important;
    background-color: #fefefe !important;
}

.recipe-selector select:hover:not(:disabled),
.recipe-filter select:hover:not(:disabled),
.form-group select:hover:not(:disabled) {
    border-color: var(--primary-color) !important;
    background-color: #f8faff !important;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--select-border);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--select-bg);
    color: var(--select-text);
    box-shadow: var(--select-shadow);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--select-border-focus);
    box-shadow: var(--select-shadow-focus);
}

/* form-group内のselectは統一スタイルを使用 */

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
}

/* Ingredient List */
.ingredient-entry {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.ingredient-entry select,
.ingredient-entry input {
    margin-bottom: 0;
}

.ingredient-entry select {
    flex: 2;
    padding: 10px 14px !important;
    font-size: 0.95rem;
    /* 統一スタイルを強制適用 */
    border: 2px solid var(--select-border) !important;
    border-radius: 8px !important;
    background-color: var(--select-bg) !important;
    color: var(--select-text) !important;
    box-shadow: var(--select-shadow) !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    background-image: linear-gradient(45deg, transparent 50%, var(--select-text) 50%),
                      linear-gradient(135deg, var(--select-text) 50%, transparent 50%) !important;
    background-position: calc(100% - 20px) calc(50% + 2px),
                         calc(100% - 15px) calc(50% + 2px) !important;
    background-size: 5px 5px, 5px 5px !important;
    background-repeat: no-repeat !important;
}

.ingredient-entry select:focus {
    border-color: var(--select-border-focus) !important;
    box-shadow: var(--select-shadow-focus) !important;
    background-color: #fefefe !important;
}

.ingredient-entry select:hover:not(:disabled) {
    border-color: var(--primary-color) !important;
    background-color: #f8faff !important;
}

/* ingredient-entry内のselectのoption要素もダークテーマ対応 */
.ingredient-entry select option {
    background-color: var(--select-bg) !important;
    color: var(--select-text) !important;
    padding: 8px 12px;
}

.ingredient-entry select option:hover {
    background-color: var(--primary-color) !important;
    color: var(--text-inverse) !important;
}

.ingredient-entry input {
    flex: 1;
    min-width: 80px;
}

.remove-ingredient {
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.add-ingredient-btn {
    width: 100%;
    padding: 10px;
    background: linear-gradient(135deg, #17a2b8, #20c997);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.add-ingredient-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(23, 162, 184, 0.3);
}

/* Modal Buttons */
.cancel-btn, .save-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cancel-btn {
    background: #6c757d;
    color: white;
}

.cancel-btn:hover {
    background: #5a6268;
}

.save-btn {
    background: #28a745;
    color: white;
}

.save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
}

/* Recipe List */
.recipe-filter {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.recipe-filter input {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--select-border);
    border-radius: 8px;
    background: var(--select-bg);
    color: var(--select-text);
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.recipe-filter input:focus {
    outline: none;
    border-color: var(--select-border-focus);
    box-shadow: var(--select-shadow-focus);
}

.recipe-filter select {
    padding: 10px 14px;
    font-size: 0.95rem;
}



.recipe-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    margin-bottom: 10px;
    background: #f8f9fa;
    border-radius: 10px;
    border-left: 4px solid #5d6d7e;
}

.recipe-list-item.main-recipe {
    border-left-color: #28a745;
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
}

.recipe-info h4 {
    margin: 0 0 5px 0;
    color: #2c3e50;
}

.recipe-info p {
    margin: 0;
    color: #6c757d;
    font-size: 0.9rem;
}

.recipe-actions {
    display: flex;
    gap: 5px;
}

.recipe-actions button {
    padding: 5px 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.8rem;
}

.edit-btn {
    background: #ffc107;
    color: #212529;
}

.delete-btn {
    background: #dc3545;
    color: white;
}

.edit-btn:hover, .delete-btn:hover {
    opacity: 0.8;
}

/* 計算結果のスタイル */
.calculation-result {
    margin-top: 20px;
    min-height: 50px;
}

.calculation-result h4 {
    color: var(--text-primary);
    margin-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 8px;
}

.calculation-ingredients {
    display: grid;
    gap: 10px;
    margin-bottom: 20px;
}

.calculation-item {
    display: flex;
    align-items: center;
    padding: 12px;
    border-radius: 8px;
    border-left: 4px solid var(--secondary-color);
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.calculation-item.sufficient {
    border-left-color: var(--success-color);
    background: var(--bg-secondary);
    border-color: var(--success-color);
}

.calculation-item.insufficient {
    border-left-color: #dc3545;
    background: rgba(248, 215, 218, 0.8);
}

.calculation-item .ingredient-icon {
    margin-right: 12px;
    font-size: 1.2em;
    color: var(--primary-color);
}

.calculation-item .ingredient-name {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.calculation-item .ingredient-amount {
    font-weight: 600;
    color: var(--accent-color);
    margin-right: 10px;
}

.calculation-item .stock-info {
    font-size: 0.9em;
    color: #6c757d;
}

.max-craftable-info {
    text-align: center;
    padding: 15px;
    background: linear-gradient(135deg, rgba(108, 117, 125, 0.1), rgba(108, 117, 125, 0.05));
    border-radius: 8px;
    font-size: 1.1em;
    color: var(--text-primary);
}

.calculation-result .error {
    color: #dc3545;
    text-align: center;
    padding: 20px;
    background: rgba(248, 215, 218, 0.8);
    border-radius: 8px;
    border-left: 4px solid #dc3545;
}

/* レシピ未選択時のメッセージ */
.no-recipe-message {
    text-align: center;
    padding: 30px 20px;
    color: #6c757d;
    font-style: italic;
    background: rgba(108, 117, 125, 0.1);
    border-radius: 8px;
    border: 2px dashed rgba(108, 117, 125, 0.3);
}

/* レシピセレクター関連のスタイル */
.recipe-selector-section {
    margin-bottom: 25px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-color);
}

.recipe-selector-section h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
    font-size: 1.2em;
}

.recipe-selector {
    margin-bottom: 15px;
}

.recipe-selector label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

/* recipe-selector内のselectは統一スタイルを使用 */



/* 材料計算結果のスタイル */
.calculation-header {
    text-align: center;
    margin-bottom: 20px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.08), rgba(30, 64, 175, 0.04));
    border-radius: 8px;
    border: 2px solid var(--primary-color);
    border-left: 6px solid var(--primary-color);
}

.calculation-header h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.3em;
}

.calculation-header p {
    color: var(--text-primary);
    font-size: 1.05em;
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.material-item {
    display: flex;
    align-items: center;
    padding: 12px;
    background: var(--bg-primary);
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.material-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    border-color: var(--border-dark);
}

.material-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.15), rgba(30, 64, 175, 0.08));
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    margin-right: 12px;
    flex-shrink: 0;
}

.material-icon i {
    color: var(--primary-color);
    font-size: 1.2em;
    font-weight: 600;
}

.material-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.material-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.material-amount {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.15em;
}

.calculation-summary {
    text-align: center;
    padding: 15px;
    background: linear-gradient(135deg, rgba(22, 163, 74, 0.1), rgba(22, 163, 74, 0.05));
    border: 2px solid var(--success-color);
    border-radius: 8px;
    color: var(--success-color);
    font-weight: 600;
}

.calculation-summary i {
    margin-right: 8px;
}

/* ==============================================
   レシピツリーシステム
   
   動的に生成されるレシピ構成ツリーの表示システム
   - ノードタイプ: レシピ（青）、基本材料（緑）、エラー（赤）
   - 接続線: JavaScriptでSVG動的生成
   - レスポンシブ: モバイル対応
   ============================================== */

/* ツリーコンテナ */
.recipe-tree-container {
    margin-top: 20px;
    padding: 20px;
    background: var(--bg-primary);
    border-radius: 12px;
    box-shadow: var(--shadow-medium);
    border: 2px solid var(--primary-color);
    border-left: 6px solid var(--primary-color);
    position: relative;
}

.recipe-tree-container h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
    font-size: 1.3em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ツリー全体 */
.recipe-tree {
    font-family: 'Poppins', sans-serif;
    line-height: 1.4;
    position: relative;
}

/* ノードの基本構造 */
.tree-node {
    position: relative;
    margin-bottom: 8px;
    transition: all 0.3s ease;
    z-index: 1;
}

.node-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-primary);
    border-radius: 8px;
    box-shadow: var(--shadow-light);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    gap: 12px;
}

.node-content:hover:not(.tree-node.basic-ingredient .node-content):not(.tree-node.recipe .node-content) {
    transform: translateX(3px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

/* ツリーノードのホバーエフェクト */
.tree-node .node-content:hover {
    transform: translateX(3px);
}

/* ノード情報グループ */
.node-info {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
    text-align: left;
    gap: 8px;
}

/* ノードの各要素 */
.node-icon {
    width: 20px;
    text-align: center;
    font-size: 1.1em;
    flex-shrink: 0;
}

.node-name {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.node-type {
    font-size: 0.85em;
    color: var(--text-muted);
    font-style: italic;
    font-weight: 500;
    white-space: nowrap;
    margin-left: 4px;
}

/* ノードタイプ別スタイル */

/* 基本材料ノード（緑色） - 強化版 */
#recipeTree .tree-node.basic-ingredient .node-content,
.recipe-tree .tree-node.basic-ingredient .node-content,
.tree-node.basic-ingredient .node-content {
    background: #dcfce7 !important;
    border: 2px solid #16a34a !important;
    border-left: 5px solid #16a34a !important;
    box-shadow: 0 2px 8px rgba(22, 163, 74, 0.2) !important;
}

#recipeTree .tree-node.basic-ingredient .node-content:hover,
.recipe-tree .tree-node.basic-ingredient .node-content:hover,
.tree-node.basic-ingredient .node-content:hover {
    border-color: #15803d !important;
    box-shadow: 0 4px 16px rgba(22, 163, 74, 0.3) !important;
    background: #bbf7d0 !important;
}

#recipeTree .tree-node.basic-ingredient .node-icon,
.recipe-tree .tree-node.basic-ingredient .node-icon,
.tree-node.basic-ingredient .node-icon {
    color: #16a34a !important;
    font-weight: 600;
}

#recipeTree .tree-node.basic-ingredient .node-type,
.recipe-tree .tree-node.basic-ingredient .node-type,
.tree-node.basic-ingredient .node-type {
    color: #16a34a !important;
    font-weight: 600;
}

/* レシピノード（青色） - 強化版 */
#recipeTree .tree-node.recipe .node-content,
.recipe-tree .tree-node.recipe .node-content,
.tree-node.recipe .node-content {
    background: var(--tree-recipe-bg) !important;
    border: 2px solid var(--tree-recipe-border) !important;
    border-left: 5px solid var(--tree-recipe-border) !important;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.1) !important;
}

#recipeTree .tree-node.recipe .node-content:hover,
.recipe-tree .tree-node.recipe .node-content:hover,
.tree-node.recipe .node-content:hover {
    border-color: var(--tree-recipe-border) !important;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.2) !important;
    background: var(--tree-recipe-bg) !important;
}

#recipeTree .tree-node.recipe .node-icon,
.recipe-tree .tree-node.recipe .node-icon,
.tree-node.recipe .node-icon {
    color: var(--tree-recipe-border) !important;
    font-weight: 600;
}

#recipeTree .tree-node.recipe .node-type,
.recipe-tree .tree-node.recipe .node-type,
.tree-node.recipe .node-type {
    color: var(--tree-recipe-border) !important;
    font-weight: 500;
}

/* エラーノード（赤色） */
.tree-node.error .node-content {
    background: rgba(220, 38, 38, 0.1);
    border: 2px solid var(--error-color);
    border-left: 5px solid var(--error-color);
}

.tree-node.error .node-icon {
    color: var(--error-color);
    font-weight: 600;
}

/* 数量表示 */
.ingredient-amount {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    font-size: 0.9em;
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.amount-badge {
    display: inline-block;
    background: var(--primary-color);
    color: var(--text-inverse);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    font-weight: 700;
    min-width: 24px;
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: all 0.3s ease;
}

/* ツリー表示システム */

.tree-node {
    position: relative;
    z-index: 1;
}

/* 子ノードのコンテナ */
.node-children {
    position: relative;
    margin-top: 8px;
    margin-left: 20px;
    transition: all 0.3s ease;
}

/* 折りたたみボタン */
.toggle-button {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.9em;
    cursor: pointer;
    padding: 4px;
    margin-right: 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toggle-button:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
    transform: scale(1.1);
}

.toggle-button i {
    transition: transform 0.2s ease;
}

/* 折りたたまれた状態 */
.tree-node.collapsed .toggle-button i {
    transform: rotate(-90deg);
}

/* 折りたたみアニメーション */
.node-children {
    overflow: hidden;
    max-height: none;
    opacity: 1;
}

.tree-node.collapsed .node-children {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
}

/* インデント表示（階層の視覚化） */
.tree-node[data-depth="0"] {
    margin-left: 0;
}

.tree-node[data-depth="1"] {
    margin-left: 0;
}

.tree-node[data-depth="2"] {
    margin-left: 0;
}

.tree-node[data-depth="3"] {
    margin-left: 0;
}

/* ツリーコンテナ全体 */
.recipe-tree {
    background: transparent;
    padding: 20px;
    border-radius: 12px;
}



/* ==============================================
   レスポンシブ対応
   ============================================== */

@media (max-width: 768px) {
    /* ツリー全体の調整 */
    .recipe-tree-container {
        padding: 15px;
        margin-top: 15px;
    }
    
    /* ノードの調整 */
    .tree-node {
        margin-bottom: 6px;
    }
    
    /* 折りたたみボタンをより見やすく */
    .toggle-button {
        width: 24px;
        height: 24px;
        font-size: 1em;
    }
    
    .node-content {
        padding: 10px 12px;
        font-size: 0.9em;
    }
    
    .node-children {
        margin-top: 6px;
    }
    
    /* 数量バッジの調整 */
    .ingredient-amount {
        font-size: 0.85em;
        gap: 4px;
    }
    
    .amount-badge {
        padding: 2px 6px;
        font-size: 0.75em;
        min-width: 20px;
    }
    
    /* ウェルカムセクションのレスポンシブ */
    .welcome-section {
        min-height: 50vh;
        padding: 20px;
    }
    
    .welcome-card {
        padding: 40px 30px;
        width: 100%;
        max-width: 95vw;
        min-height: 300px;
        margin: 0 auto;
    }
    
    .welcome-card h2 {
        font-size: 1.8em;
    }
    
    .welcome-description {
        font-size: 1em;
    }
    
    .welcome-actions {
        gap: 15px;
        margin-top: 30px;
        flex-direction: column;
        align-items: center;
    }
    
    .welcome-btn {
        padding: 15px 30px;
        min-width: 200px;
        font-size: 1rem;
    }
}

/* モダンUI表示切り替えアニメーション */
.fade-in {
    animation: fadeInUp 0.6s ease-out forwards;
}

.fade-out {
    animation: fadeOut 0.3s ease-in forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-20px);
    }
}

/* セクション間のスムーズな切り替え */
.welcome-section,
.recipe-management-section,
.calculator-section {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center top;
}

/* ウェルカムセクションの特別なスタイル */
.welcome-section {
    position: relative;
    z-index: 2;
}

.welcome-section.fade-in {
    animation: welcomeSlideIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes welcomeSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(40px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* メインコンテンツセクションのアニメーション */
.recipe-management-section.fade-in,
.calculator-section.fade-in {
    animation: contentSlideIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes contentSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 統計カードのスタガードアニメーション */
.stat-item {
    animation: statItemSlideIn 0.5s ease-out forwards;
    opacity: 0;
}

.stat-item:nth-child(1) { animation-delay: 0.1s; }
.stat-item:nth-child(2) { animation-delay: 0.2s; }
.stat-item:nth-child(3) { animation-delay: 0.3s; }

@keyframes statItemSlideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 隠れた状態のスタイル */
.hidden {
    display: none !important;
}

/* より滑らかな表示/非表示の管理 */
.section-transition {
    transition: opacity 0.4s ease, transform 0.4s ease, visibility 0.4s ease;
}

.section-hidden {
    opacity: 0;
    transform: translateY(-10px);
    visibility: hidden;
    pointer-events: none;
}

.section-visible {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
}

/* ===== その他のスクロール領域の統一デザイン ===== */

/* 材料リストやフォーム要素のスクロールバー */
.ingredients-list::-webkit-scrollbar,
.calculation-result::-webkit-scrollbar,
.recipe-list-content::-webkit-scrollbar {
    width: 8px;
}

.ingredients-list::-webkit-scrollbar-track,
.calculation-result::-webkit-scrollbar-track,
.recipe-list-content::-webkit-scrollbar-track {
    background: var(--bg-accent);
    border-radius: 4px;
}

.ingredients-list::-webkit-scrollbar-thumb,
.calculation-result::-webkit-scrollbar-thumb,
.recipe-list-content::-webkit-scrollbar-thumb {
    background: var(--border-dark);
    border-radius: 4px;
    border: 1px solid var(--bg-accent);
    transition: all 0.3s ease;
}

.ingredients-list::-webkit-scrollbar-thumb:hover,
.calculation-result::-webkit-scrollbar-thumb:hover,
.recipe-list-content::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

/* コンテナ全体のスクロールバー強化 */
.container::-webkit-scrollbar {
    width: 14px;
}

.container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 7px;
    border: 2px solid rgba(255, 255, 255, 0.05);
}

.container::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 7px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.container::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: scale(1.05);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
}