/* 麻雀をテーマとした和風デザイン */
:root {
    /* 麻雀の牌をイメージした色合い - 強化版 */
    --primary: var(--mahjong-green);
    --secondary: var(--mahjong-bamboo);
    --success: var(--mahjong-bamboo);
    --danger: var(--mahjong-red);
    --warning: var(--mahjong-gold);
    --info: var(--mahjong-ivory);
    
    /* 高級麻雀牌カラーパレット */
    --mahjong-green: #1a4a3a; /* 深い発緑 */
    --mahjong-red: #cc1100; /* 深い中赤 */
    --mahjong-gold: #d4af37; /* 純金色 - 字牌の縁取り */
    --mahjong-ivory: #fffef7; /* 高級象牙色 */
    --mahjong-charcoal: #2d2d2d; /* 深い炭色 */
    --mahjong-bamboo: #654321; /* 深い竹色 */
    --mahjong-jade: #006a4e; /* 翡翠色 */
    --mahjong-pearl: #f8f6f0; /* 真珠色 */
    --mahjong-lacquer: #0f0f0f; /* 漆黒 */
    
    /* 牌卓の質感 */
    --table-felt: #1a472a; /* 麻雀卓のフェルト */
    --table-wood: #8b4513; /* 卓の木材 */
    --tile-shadow: rgba(0, 0, 0, 0.4);
    --tile-highlight: rgba(255, 255, 255, 0.9);
    
    /* 3D効果とグラデーション */
    --glass-bg: linear-gradient(145deg, rgba(255, 254, 247, 0.95) 0%, rgba(248, 246, 240, 0.9) 100%);
    --glass-border: rgba(212, 175, 55, 0.3);
    --shadow-3d: 0 15px 35px rgba(0, 0, 0, 0.1), 0 3px 10px rgba(0, 0, 0, 0.1);
    --shadow-tile: 0 8px 25px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    --text-primary: #2d2d2d;
    --text-secondary: #5a5a5a;
    --accent: #cc1100;
    
    /* アニメーション定数 */
    --border-radius: 8px; /* 牌の角 */
    --tile-radius: 6px;
    --animation-speed: 0.3s;
    --bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --elastic: cubic-bezier(0.68, -0.6, 0.32, 1.6);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background: 
        /* 麻雀卓の木目テクスチャ */
        repeating-linear-gradient(
            90deg,
            rgba(139, 69, 19, 0.03) 0px,
            rgba(139, 69, 19, 0.03) 1px,
            transparent 1px,
            transparent 50px
        ),
        /* フェルトの質感 */
        radial-gradient(circle at 25% 25%, rgba(26, 71, 42, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(26, 71, 42, 0.1) 0%, transparent 50%),
        /* メイングラデーション */
        linear-gradient(145deg, #f8f6f0 0%, #e8e6e0 25%, #f0f0ea 50%, #e8e6e0 75%, #f8f6f0 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* 高級麻雀卓パターン背景 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        /* 麻雀牌の細かい刻印パターン */
        repeating-linear-gradient(
            45deg,
            rgba(212, 175, 55, 0.08) 0px,
            rgba(212, 175, 55, 0.08) 0.5px,
            transparent 0.5px,
            transparent 12px
        ),
        repeating-linear-gradient(
            -45deg,
            rgba(26, 74, 58, 0.05) 0px,
            rgba(26, 74, 58, 0.05) 0.5px,
            transparent 0.5px,
            transparent 8px
        ),
        /* 麻雀卓の照明効果 */
        radial-gradient(ellipse at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 70%, rgba(26, 71, 42, 0.08) 0%, transparent 50%),
        /* 微細なノイズテクスチャ */
        repeating-radial-gradient(
            circle at 50% 50%,
            transparent 0px,
            rgba(0, 0, 0, 0.01) 1px,
            transparent 2px
        );
    z-index: -1;
    pointer-events: none;
    opacity: 0.7;
}

/* ナビゲーション - 麻雀テーマ */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid var(--mahjong-bamboo);
    box-shadow: var(--shadow);
    transition: all var(--animation-speed) var(--smooth);
}

.navbar-brand {
    font-weight: 900;
    font-size: 1.6rem;
    color: var(--mahjong-green) !important;
    text-shadow: 0 2px 4px rgba(45, 74, 62, 0.3);
    position: relative;
}

.navbar-brand::before {
    content: '🀄';
    margin-right: 0.5rem;
    font-size: 1.2em;
}

.navbar-nav .nav-link {
    font-weight: 600;
    color: var(--mahjong-charcoal) !important;
    transition: all var(--animation-speed) var(--bounce);
    position: relative;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius);
    margin: 0 0.25rem;
}

.navbar-nav .nav-link:hover {
    background: rgba(45, 74, 62, 0.1);
    color: var(--mahjong-green) !important;
    transform: translateY(-2px);
}

.navbar-nav .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--primary);
    transition: left var(--animation-speed) var(--smooth);
}

.navbar-nav .nav-link:hover::before {
    left: 0;
}


/* 高級麻雀牌グラスカード */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(25px) saturate(180%);
    border: 2px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: 
        var(--shadow-3d),
        inset 0 1px 0 var(--tile-highlight),
        inset 0 -1px 0 rgba(0, 0, 0, 0.1);
    transition: all var(--animation-speed) var(--elastic);
    opacity: 1 !important;
    visibility: visible !important;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.glass-card:hover {
    transform: translateY(-8px) rotateX(2deg) rotateY(-1deg) scale(1.02);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.15),
        0 10px 25px rgba(26, 74, 58, 0.2),
        inset 0 2px 0 var(--tile-highlight),
        inset 0 -2px 0 rgba(0, 0, 0, 0.15);
    border-color: var(--mahjong-gold);
}

/* 麻雀牌の光沢効果 */
.glass-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(
        135deg,
        rgba(212, 175, 55, 0.3) 0%,
        transparent 20%,
        transparent 80%,
        rgba(212, 175, 55, 0.2) 100%
    );
    border-radius: var(--border-radius);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--animation-speed) var(--smooth);
}

.glass-card:hover::before {
    opacity: 1;
}

/* ルールカード - 麻雀牌風デザイン */
.rule-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border: 2px solid var(--mahjong-bamboo);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(45, 74, 62, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all var(--animation-speed) var(--smooth);
    position: relative;
    overflow: hidden;
    opacity: 1 !important;
    visibility: visible !important;
}

.rule-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s;
}

.rule-card:hover::before {
    left: 100%;
}

.rule-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 40px rgba(45, 74, 62, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    border-color: var(--mahjong-green);
}

/* フィルターサイドバー - 和風デザイン */
.filter-sidebar {
    background: rgba(254, 243, 199, 0.95);
    backdrop-filter: blur(20px);
    border: 2px solid var(--mahjong-bamboo);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(45, 74, 62, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    padding: 2rem;
    position: sticky;
    top: 100px;
    transition: all var(--animation-speed) var(--smooth);
    opacity: 1 !important;
    visibility: visible !important;
}

.filter-sidebar:hover {
    transform: scale(1.02);
}

/* ボタン - 麻雀牌風 */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 2rem;
    transition: all var(--animation-speed) var(--smooth);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
    text-transform: none;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--mahjong-green);
    color: white;
    box-shadow: 0 4px 20px rgba(45, 74, 62, 0.4);
    border: 1px solid var(--mahjong-green);
}

.btn-primary:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, var(--mahjong-green) 0%, #3e6b4e 100%);
    box-shadow: 0 8px 30px rgba(45, 74, 62, 0.6);
    color: white;
    border-color: #3e6b4e;
}

.btn-success {
    background: var(--mahjong-bamboo);
    color: white;
    box-shadow: 0 4px 20px rgba(139, 69, 19, 0.4);
    border: 1px solid var(--mahjong-bamboo);
}

.btn-success:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, var(--mahjong-bamboo) 0%, #a0522d 100%);
    box-shadow: 0 8px 30px rgba(139, 69, 19, 0.6);
    color: white;
    border-color: #a0522d;
}

.btn-secondary {
    background: var(--mahjong-charcoal);
    color: white;
    box-shadow: 0 4px 20px rgba(55, 65, 81, 0.4);
    border: 1px solid var(--mahjong-charcoal);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, var(--mahjong-charcoal) 0%, #4b5563 100%);
    box-shadow: 0 8px 30px rgba(55, 65, 81, 0.6);
    color: white;
    border-color: #4b5563;
}

.btn-danger {
    background: var(--mahjong-red);
    color: white;
    box-shadow: 0 4px 20px rgba(220, 38, 38, 0.4);
    border: 1px solid var(--mahjong-red);
}

.btn-danger:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, var(--mahjong-red) 0%, #ef4444 100%);
    box-shadow: 0 8px 30px rgba(220, 38, 38, 0.6);
    color: white;
    border-color: #ef4444;
}

.btn-warning {
    background: var(--mahjong-gold);
    color: white;
    box-shadow: 0 4px 20px rgba(217, 119, 6, 0.4);
    border: 1px solid var(--mahjong-gold);
}

.btn-warning:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, var(--mahjong-gold) 0%, #fbbf24 100%);
    box-shadow: 0 8px 30px rgba(217, 119, 6, 0.6);
    color: white;
    border-color: #fbbf24;
}

.btn-info {
    background: var(--mahjong-ivory);
    color: var(--mahjong-charcoal);
    box-shadow: 0 4px 20px rgba(254, 243, 199, 0.4);
    border: 1px solid var(--mahjong-bamboo);
}

.btn-info:hover {
    transform: translateY(-3px);
    background: #f9f5d7;
    box-shadow: 0 8px 30px rgba(254, 243, 199, 0.6);
    color: var(--mahjong-charcoal);
    border-color: var(--mahjong-green);
}

.btn-outline-primary {
    background: transparent;
    color: var(--mahjong-green);
    border: 2px solid var(--mahjong-green);
}

.btn-outline-primary:hover {
    background: var(--mahjong-green);
    color: white;
    transform: translateY(-2px);
}

.btn-outline-secondary {
    background: transparent;
    color: var(--mahjong-charcoal);
    border: 2px solid var(--mahjong-charcoal);
}

.btn-outline-secondary:hover {
    background: var(--mahjong-charcoal);
    color: white;
    transform: translateY(-2px);
}

/* フォーム要素 */
.form-control, .form-select {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    transition: all var(--animation-speed) var(--smooth);
    opacity: 1;
    visibility: visible;
}

.form-control:focus, .form-select:focus {
    background: rgba(255, 255, 255, 0.95) !important;
    border-color: var(--mahjong-green);
    box-shadow: 0 0 20px rgba(45, 74, 62, 0.3);
    transform: scale(1.02);
    opacity: 1 !important;
    visibility: visible !important;
}

.form-check-input {
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    transition: all var(--animation-speed) var(--bounce);
}

.form-check-input:checked {
    background: var(--mahjong-green);
    border-color: var(--mahjong-green);
    transform: scale(1.1);
}

/* バッジ */
.badge {
    border-radius: 2rem;
    padding: 0.5rem 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--animation-speed) var(--bounce);
    position: relative;
    overflow: hidden;
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
    transition: left 0.5s;
}

.badge:hover::before {
    left: 100%;
}

.badge:hover {
    transform: scale(1.1) rotateZ(5deg);
}

.bg-info {
    background: var(--mahjong-bamboo) !important;
    color: white !important;
}

.bg-secondary {
    background: var(--mahjong-charcoal) !important;
    color: white !important;
}

.bg-danger {
    background: var(--mahjong-red) !important;
    color: white !important;
}

/* アニメーション */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(45, 74, 62, 0.3); }
    50% { box-shadow: 0 0 40px rgba(45, 74, 62, 0.6); }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}

.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}

.glow-animation {
    animation: glow 2s ease-in-out infinite;
}

/* ローディング */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(45, 74, 62, 0.9);
    backdrop-filter: blur(10px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-overlay.show {
    display: flex;
}

.mahjong-loader {
    display: flex;
    gap: 1rem;
}

.mahjong-loader .tile {
    font-size: 4rem;
    background: white;
    border-radius: 0.5rem;
    padding: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: tileFlip 1.5s ease-in-out infinite;
}

.mahjong-loader .tile-1 { animation-delay: 0s; }
.mahjong-loader .tile-2 { animation-delay: 0.3s; }
.mahjong-loader .tile-3 { animation-delay: 0.6s; }

@keyframes tileFlip {
    0%, 80%, 100% {
        transform: rotateY(0deg) scale(1);
    }
    40% {
        transform: rotateY(180deg) scale(1.2);
    }
}

/* ページネーション */
.pagination .page-link {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    transition: all var(--animation-speed) var(--bounce);
}

.pagination .page-link:hover {
    background: rgba(45, 74, 62, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 74, 62, 0.3);
}

.pagination .page-item.active .page-link {
    background: var(--mahjong-green);
    border-color: var(--mahjong-green);
    color: white;
}

/* リッチテキストエディタ */
.ql-container {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    border-radius: 0 0 var(--border-radius) var(--border-radius) !important;
    opacity: 1 !important;
    visibility: visible !important;
}

.ql-toolbar {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    border-color: var(--glass-border) !important;
    opacity: 1 !important;
    visibility: visible !important;
}

.ql-editor {
    background: rgba(255, 255, 255, 0.95) !important;
    color: var(--text-primary) !important;
    opacity: 1 !important;
    visibility: visible !important;
}

/* モーダル */
.modal-content {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.modal-header {
    border-bottom: 1px solid var(--glass-border);
}

.modal-footer {
    border-top: 1px solid var(--glass-border);
}

/* レスポンシブ - スマホ優先 */
@media (max-width: 768px) {
    /* 基本レイアウト */
    .container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    .card {
        margin: 0.5rem 0;
        border-radius: 0.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    /* ヘッダー */
    .card-header h1 {
        font-size: 1.5rem !important;
        padding: 0.75rem;
    }
    
    /* タブナビゲーション */
    .nav-tabs {
        border-bottom: 2px solid #dee2e6;
        margin-bottom: 1rem !important;
    }
    
    .nav-tabs .nav-link {
        font-size: 0.9rem;
        padding: 0.5rem 0.75rem;
        margin-bottom: -2px;
        white-space: nowrap;
    }
    
    .nav-tabs .nav-link i {
        display: none; /* アイコンを非表示 */
    }
    
    /* アラート */
    .alert {
        font-size: 0.9rem;
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    /* ルールセクション */
    .rule-section {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }
    
    .rule-section h3 {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }
    
    .rule-section h4,
    .rule-section h5 {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }
    
    /* ルールアイテム */
    .rule-item {
        padding: 0.5rem;
        margin-bottom: 0.25rem;
        font-size: 0.9rem;
    }
    
    .special-item {
        padding: 0.5rem;
        margin-bottom: 0.5rem;
    }
    
    /* スマホではツールチップアイコンを非表示 */
    .fa-info-circle[data-bs-toggle="tooltip"] {
        display: none !important;
    }
    
    /* テーブル */
    .table-responsive {
        border: 1px solid #dee2e6;
        border-radius: 0.375rem;
    }
    
    .table {
        font-size: 0.8rem;
        margin-bottom: 0;
    }
    
    .table th,
    .table td {
        padding: 0.5rem 0.25rem;
        text-align: center;
        vertical-align: middle;
    }
    
    .table th {
        font-size: 0.75rem;
        line-height: 1.2;
    }
    
    .table-dark th {
        background-color: #495057;
        border-color: #495057;
    }
    
    /* カード */
    .card.bg-light {
        margin-bottom: 1rem;
    }
    
    .card-title {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .card-text {
        font-size: 0.9rem;
    }
    
    /* ボタン */
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
        border-radius: 0.375rem;
    }
    
    /* グリッドレイアウト */
    .row {
        margin-left: -0.5rem;
        margin-right: -0.5rem;
    }
    
    .col-md-6,
    .col-md-4 {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
        margin-bottom: 1rem;
    }
    
    /* 点数表の特別対応 */
    .table tbody tr:nth-child(4) td:nth-child(3),
    .table tbody tr:nth-child(4) td:nth-child(5) {
        font-size: 0.7rem;
        line-height: 1.1;
    }
    
    /* フィルターサイドバー */
    .filter-sidebar {
        position: static;
        margin-bottom: 1rem;
        padding: 1rem;
    }
    
    /* ホバー効果を無効化 */
    .glass-card:hover,
    .rule-card:hover,
    .btn:hover {
        transform: none;
        box-shadow: none;
    }
    
    /* フォーカス効果を簡素化 */
    *:focus {
        box-shadow: 0 0 0 2px rgba(45, 74, 62, 0.25) !important;
    }
    
    /* 固定ナビがある場合の下部余白 */
    .main-content {
        padding-bottom: 5rem;
    }
}

/* 非常に小さな画面（320px以下） */
@media (max-width: 320px) {
    .card-header h1 {
        font-size: 1.25rem !important;
    }
    
    .nav-tabs .nav-link {
        font-size: 0.8rem;
        padding: 0.5rem;
    }
    
    .table {
        font-size: 0.7rem;
    }
    
    .table th,
    .table td {
        padding: 0.25rem 0.125rem;
    }
    
    .rule-item {
        font-size: 0.85rem;
    }
}

/* スクロールバー */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: rgba(45, 74, 62, 0.5);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(45, 74, 62, 0.7);
}

/* 特殊効果 - シンプル化 */
.particle-effect {
    position: relative;
}

/* テキスト効果 - 和風 */
.gradient-text {
    color: var(--mahjong-green) !important;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(45, 74, 62, 0.2);
}

.glow-text {
    text-shadow: 0 0 10px rgba(45, 74, 62, 0.3), 0 1px 2px rgba(45, 74, 62, 0.2);
}

/* カード内コンテンツ */
.content-body {
    line-height: 1.8;
    opacity: 1 !important;
    visibility: visible !important;
}

.content-body h1, .content-body h2, .content-body h3, 
.content-body h4, .content-body h5, .content-body h6 {
    color: var(--mahjong-green) !important;
    font-weight: 700;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-body blockquote {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-left: 4px solid var(--mahjong-green);
    padding: 1rem;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin: 2rem 0;
    box-shadow: var(--shadow);
}

/* フォーカス効果 */
*:focus {
    outline: none;
    box-shadow: 0 0 20px rgba(45, 74, 62, 0.5) !important;
    opacity: 1 !important;
    visibility: visible !important;
}

/* セレクション */
::selection {
    background: rgba(45, 74, 62, 0.3);
    color: white;
}

/* フェードアウト問題修正 - 強制表示 */
.card, .glass-card, .rule-card, .filter-sidebar,
.form-control, .form-select, textarea, input,
.ql-container, .ql-toolbar, .ql-editor,
.content-body, .card-body, .card-header, .card-footer,
.pagination, .btn, .navbar, .main-content {
    opacity: 1 !important;
    visibility: visible !important;
    display: block !important;
}

.form-control:focus, .form-select:focus, 
textarea:focus, input:focus {
    opacity: 1 !important;
    visibility: visible !important;
}

/* テキスト視認性向上 - 和風配色 */
.card-title, .card-text, .form-label, 
h1, h2, h3, h4, h5, h6, p, span, div {
    color: var(--mahjong-charcoal) !important;
    opacity: 1 !important;
    visibility: visible !important;
}

/* ツールチップアイコンのスタイル */
.fa-info-circle[data-bs-toggle="tooltip"] {
    color: #666666 !important;
    cursor: help;
    transition: color 0.2s ease;
    display: inline !important; /* PC では必ず表示 */
}

.fa-info-circle[data-bs-toggle="tooltip"]:hover {
    color: #333333 !important;
}

.text-muted {
    color: var(--mahjong-charcoal) !important;
    opacity: 0.7 !important;
}

.navbar-brand, .nav-link {
    opacity: 1 !important;
    visibility: visible !important;
}

/* ルール一覧の文字色修正 */
.rule-card .card-title a {
    color: var(--mahjong-green) !important;
    text-decoration: none;
}

.rule-card .card-text {
    color: var(--mahjong-charcoal) !important;
    opacity: 0.8;
}

/* 削除確認ダイアログ */
.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 9998;
    display: none;
    justify-content: center;
    align-items: center;
}

.dialog-overlay.show {
    display: flex;
}

.delete-confirm-dialog {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-3d);
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    display: none;
}

.delete-confirm-dialog.show {
    display: block;
}

.delete-confirm-dialog h5 {
    color: var(--mahjong-charcoal) !important;
    font-weight: 600;
}

.delete-confirm-dialog p {
    color: var(--text-secondary) !important;
}

/* コメントの削除ボタン */
.comment-item {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
}

.comment-delete-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: none;
    border: none;
    color: #dc3545;
    font-size: 0.8rem;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.comment-delete-btn:hover {
    opacity: 1;
}

/* Bootstrap ツールチップのカスタマイズ */
.tooltip-inner {
    background-color: rgba(0, 0, 0, 0.9) !important;
    color: #ffffff !important;
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    max-width: 300px;
}

.tooltip.bs-tooltip-top .tooltip-arrow::before,
.tooltip.bs-tooltip-auto[data-popper-placement^="top"] .tooltip-arrow::before {
    border-top-color: rgba(0, 0, 0, 0.9) !important;
}

.tooltip.bs-tooltip-bottom .tooltip-arrow::before,
.tooltip.bs-tooltip-auto[data-popper-placement^="bottom"] .tooltip-arrow::before {
    border-bottom-color: rgba(0, 0, 0, 0.9) !important;
}

.tooltip.bs-tooltip-start .tooltip-arrow::before,
.tooltip.bs-tooltip-auto[data-popper-placement^="left"] .tooltip-arrow::before {
    border-left-color: rgba(0, 0, 0, 0.9) !important;
}

.tooltip.bs-tooltip-end .tooltip-arrow::before,
.tooltip.bs-tooltip-auto[data-popper-placement^="right"] .tooltip-arrow::before {
    border-right-color: rgba(0, 0, 0, 0.9) !important;
}

/* ルールセクションの特別スタイル */
.rule-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: relative;
    opacity: 1 !important;
    visibility: visible !important;
}

.rule-section h3, .rule-section h4, .rule-section h5 {
    opacity: 1 !important;
    visibility: visible !important;
}

.rule-section .alert {
    opacity: 1 !important;
    visibility: visible !important;
}

/* テーブルのスタイル改善 */
.table {
    opacity: 1 !important;
    visibility: visible !important;
}

.table th, .table td {
    opacity: 1 !important;
    visibility: visible !important;
}

/* アニメーション無効化（一時的） */
.rule-section * {
    animation: none !important;
    transition: none !important;
}

/* 特別ルールの強調 */
.special-rules {
    background: linear-gradient(135deg, rgba(255, 254, 247, 0.95) 0%, rgba(248, 246, 240, 0.95) 100%);
    border: 2px solid var(--mahjong-gold);
}

.rule-item {
    padding: 0.5rem 0;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.special-item {
    background: rgba(212, 175, 55, 0.05);
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
}

/* 常に表示するアラート */
.card-body > .alert {
    opacity: 1 !important;
    visibility: visible !important;
    display: block !important;
    position: relative !important;
    transform: none !important;
    animation: none !important;
}

/* 固定ナビゲーション */
.fixed-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(255, 254, 247, 0.98) 0%, rgba(248, 246, 240, 0.98) 100%);
    backdrop-filter: blur(20px);
    border-top: 2px solid var(--mahjong-gold);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    z-index: 1000;
    opacity: 1 !important;
    visibility: visible !important;
}

.fixed-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0.5rem;
    min-width: 0;
    flex: 1;
    text-align: center;
}

.fixed-nav .nav-item:hover {
    background: rgba(26, 74, 58, 0.1);
    transform: translateY(-2px);
}

.fixed-nav .nav-item.active {
    background: var(--mahjong-green);
    color: white !important;
}

.fixed-nav .nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
    color: var(--mahjong-green);
}

.fixed-nav .nav-item.active i {
    color: white;
}

.fixed-nav .nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
    line-height: 1;
    color: var(--mahjong-charcoal);
}

.fixed-nav .nav-item.active span {
    color: white !important;
}

/* セクション分けスタイル */
.content-section {
    scroll-margin-top: 2rem;
    opacity: 1 !important;
    visibility: visible !important;
}

.content-section:not(:last-child) {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid rgba(212, 175, 55, 0.2);
}

/* 用語解説のスタイル */
.term-list {
    opacity: 1 !important;
    visibility: visible !important;
}

.term-item {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    font-size: 0.9rem;
    line-height: 1.4;
    opacity: 1 !important;
    visibility: visible !important;
}

.term-item:last-child {
    border-bottom: none;
}

.term-item strong {
    color: var(--mahjong-green);
    font-weight: 600;
}