/* ================================================
   子ども向けスタイルシート
   ================================================ */

/* カスタムプロパティ（子ども向け） */
:root {
    /* 明るくカラフルな色設定 */
    --kids-primary: #FF6B6B;
    --kids-secondary: #4ECDC4;
    --kids-accent: #FFD93D;
    --kids-success: #6BCF7F;
    --kids-info: #74B9FF;
    --kids-warning: #FFA502;
    
    /* 背景色 */
    --kids-bg-yellow: #FFF9E6;
    --kids-bg-pink: #FFE5F1;
    --kids-bg-blue: #E6F3FF;
    --kids-bg-green: #E8F8E8;
    --kids-bg-purple: #F0E6FF;
    
    /* 大きめのフォントサイズ */
    --kids-font-size-base: 24px;
    --kids-font-size-small: 20px;
    --kids-font-size-large: 28px;
    --kids-font-size-xlarge: 32px;
    
    /* 読みやすいフォント */
    --kids-font-family: 'UD デジタル 教科書体', 'BIZ UDGothic', 'メイリオ', 'Hiragino Kaku Gothic ProN', sans-serif;
}

/* 子ども向けテーマ適用時の基本スタイル */
body.kids-theme {
    font-family: var(--kids-font-family);
    font-size: var(--kids-font-size-base);
    line-height: 2;
    letter-spacing: 0.1em;
}

/* ヘッダーの改善 */
.kids-theme .app-header {
    background: linear-gradient(135deg, var(--kids-primary) 0%, var(--kids-secondary) 100%);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 10px 20px;
}

.kids-theme .app-title {
    font-size: 28px;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 10px;
}

.kids-theme .app-title::before {
    content: "📚";
    font-size: 32px;
}

/* ナビゲーションボタン */
.kids-theme .nav-btn {
    background: white;
    color: var(--kids-primary);
    font-size: 18px;
    padding: 12px 24px;
    border-radius: 25px;
    border: 3px solid transparent;
    font-weight: bold;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.kids-theme .nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: var(--kids-accent);
}

.kids-theme .nav-btn[data-view="library"]::before { content: "📖"; }
.kids-theme .nav-btn[data-view="progress"]::before { content: "🌟"; }
.kids-theme .nav-btn[data-view="parent-dashboard"]::before { content: "👨‍👩‍👧"; }
.kids-theme .nav-btn[data-view="settings"]::before { content: "⚙️"; }

/* 作品カードの改善 */
.kids-theme .book-card {
    background: white;
    border: 3px solid var(--kids-info);
    border-radius: 20px;
    padding: 25px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}

.kids-theme .book-card::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--kids-accent) 0%, transparent 70%);
    opacity: 0.1;
    transform: rotate(45deg);
}

.kids-theme .book-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-color: var(--kids-accent);
}

.kids-theme .book-title {
    font-size: 24px;
    color: var(--kids-primary);
    margin-bottom: 10px;
    font-weight: bold;
}

.kids-theme .book-author {
    font-size: 18px;
    color: var(--kids-info);
    margin-bottom: 15px;
}

/* 難易度表示の改善 */
.kids-theme .difficulty {
    font-size: 16px;
    padding: 6px 16px;
    border-radius: 20px;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.kids-theme .difficulty.beginner {
    background: var(--kids-success);
    color: white;
}
.kids-theme .difficulty.beginner::before { content: "🌱"; }

.kids-theme .difficulty.intermediate {
    background: var(--kids-warning);
    color: white;
}
.kids-theme .difficulty.intermediate::before { content: "🌻"; }

.kids-theme .difficulty.advanced {
    background: var(--kids-primary);
    color: white;
}
.kids-theme .difficulty.advanced::before { content: "🌲"; }

/* 進捗バーの改善 */
.kids-theme .progress-bar {
    height: 20px;
    background: #E0E0E0;
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    border: 2px solid #D0D0D0;
}

.kids-theme .progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--kids-success) 0%, var(--kids-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.kids-theme .progress-fill::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.3) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0.3) 75%,
        transparent 75%,
        transparent
    );
    background-size: 30px 30px;
    animation: progress-stripes 1s linear infinite;
}

@keyframes progress-stripes {
    0% { background-position: 0 0; }
    100% { background-position: 30px 0; }
}

.kids-theme .progress-text {
    font-size: 18px;
    font-weight: bold;
    color: var(--kids-primary);
    margin-top: 8px;
}

/* 縦書き表示の改善 */
.kids-theme .vertical-text {
    font-size: 28px;
    line-height: 2.2;
    letter-spacing: 0.15em;
    padding: 50px 40px;
    background: var(--kids-bg-yellow);
    border: 3px solid var(--kids-info);
    border-radius: 20px;
}

/* ルビ（ふりがな）の改善 */
.kids-theme ruby {
    ruby-align: center;
}

.kids-theme rt {
    font-size: 0.6em;
    color: var(--kids-info);
    font-weight: bold;
    letter-spacing: 0.05em;
}

/* 読んでいる行のハイライト */
.kids-theme .current-line {
    background: linear-gradient(90deg, transparent, rgba(255, 219, 61, 0.3), transparent);
    padding: 0 10px;
    border-radius: 10px;
}

/* ボタンの改善 */
.kids-theme button {
    font-size: 20px;
    padding: 15px 30px;
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s;
    border: 3px solid transparent;
}

.kids-theme .btn-primary {
    background: linear-gradient(135deg, var(--kids-primary) 0%, var(--kids-secondary) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.kids-theme .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

/* 設定画面の改善 */
.kids-theme .color-btn {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    font-size: 40px;
    border: 4px solid #DDD;
    position: relative;
    overflow: hidden;
}

.kids-theme .color-btn:hover {
    transform: scale(1.1);
    border-color: var(--kids-accent);
}

.kids-theme .color-btn.selected {
    border-color: var(--kids-primary);
    box-shadow: 0 0 20px rgba(255, 107, 107, 0.5);
}

/* カラーテーマボタンに絵文字を追加 */
.kids-theme .color-btn[data-color="yellow"]::after { content: "☀️"; }
.kids-theme .color-btn[data-color="pink"]::after { content: "🌸"; }
.kids-theme .color-btn[data-color="blue"]::after { content: "🌊"; }
.kids-theme .color-btn[data-color="green"]::after { content: "🌿"; }
.kids-theme .color-btn[data-color="purple"]::after { content: "🦄"; }

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

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

.kids-theme .achievement-unlocked {
    animation: bounce 0.6s ease-in-out;
}

.kids-theme .point-gained {
    animation: pulse 0.4s ease-in-out;
}

/* 完読お祝いモーダル */
.kids-theme .completion-modal {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 30px;
    padding: 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.kids-theme .completion-modal::before {
    content: "🎉";
    position: absolute;
    font-size: 200px;
    opacity: 0.1;
    top: -50px;
    left: 50%;
    transform: translateX(-50%);
}

.kids-theme .completion-title {
    font-size: 36px;
    color: var(--kids-primary);
    margin-bottom: 20px;
    animation: bounce 0.8s ease-in-out infinite;
}

/* マスコットキャラクター表示エリア */
.kids-mascot {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 120px;
    height: 120px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="%23FFD93D"/><circle cx="35" cy="40" r="5" fill="%23333"/><circle cx="65" cy="40" r="5" fill="%23333"/><path d="M 30 60 Q 50 75 70 60" stroke="%23333" stroke-width="3" fill="none"/></svg>') center/contain no-repeat;
    cursor: pointer;
    transition: transform 0.3s;
}

.kids-mascot:hover {
    transform: scale(1.1) rotate(5deg);
}

.kids-mascot.cheering {
    animation: bounce 0.5s ease-in-out 3;
}

/* アクセシビリティ：フォーカス表示の改善 */
.kids-theme *:focus {
    outline: 4px solid var(--kids-accent);
    outline-offset: 2px;
}

/* 読み上げボタン */
.kids-theme .read-aloud-btn {
    position: fixed;
    bottom: 150px;
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--kids-primary);
    color: white;
    font-size: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all 0.3s;
}

.kids-theme .read-aloud-btn:hover {
    transform: scale(1.1);
    background: var(--kids-secondary);
}

.kids-theme .read-aloud-btn::before {
    content: "🔊";
}

/* ツールチップ */
.kids-theme .tooltip {
    background: var(--kids-info);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 16px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* 子ども向け通知 */
.kids-notification {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    background: white;
    padding: 30px 50px;
    border-radius: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    z-index: 9999;
    opacity: 0;
    transition: all 0.3s ease-in-out;
}

.kids-notification.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.kids-notification .notification-content {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 28px;
    font-weight: bold;
    color: var(--kids-primary);
}

.kids-notification .notification-icon {
    font-size: 48px;
    animation: bounce 1s ease-in-out infinite;
}

/* 読書完了時のお祝い画面 */
.kids-theme .completion-celebration {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
}

.kids-theme .celebration-content {
    text-align: center;
    animation: pulse 0.5s ease-in-out;
}

.kids-theme .celebration-title {
    font-size: 48px;
    color: var(--kids-primary);
    margin-bottom: 20px;
}

.kids-theme .celebration-stars {
    font-size: 80px;
    margin: 20px 0;
    animation: bounce 1s ease-in-out infinite;
}

.kids-theme .celebration-message {
    font-size: 24px;
    color: var(--kids-info);
    margin-bottom: 30px;
}

/* ポイント獲得アニメーション */
.kids-theme .point-bubble {
    position: fixed;
    background: var(--kids-accent);
    color: white;
    padding: 15px 25px;
    border-radius: 25px;
    font-size: 24px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    pointer-events: none;
    animation: floatUp 2s ease-out forwards;
}

@keyframes floatUp {
    0% {
        opacity: 0;
        transform: translateY(0) scale(0.5);
    }
    50% {
        opacity: 1;
        transform: translateY(-50px) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) scale(0.8);
    }
}

/* 進捗表示の改善 */
.kids-theme .progress-stars {
    display: flex;
    gap: 10px;
    margin: 20px 0;
}

.kids-theme .progress-star {
    font-size: 40px;
    color: #DDD;
    transition: all 0.3s;
}

.kids-theme .progress-star.filled {
    color: var(--kids-accent);
    animation: starPop 0.5s ease-out;
}

@keyframes starPop {
    0% { transform: scale(0); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .kids-theme {
        --kids-font-size-base: 20px;
        --kids-font-size-large: 24px;
    }
    
    .kids-theme .nav-btn {
        font-size: 16px;
        padding: 10px 20px;
    }
    
    .kids-theme .book-card {
        padding: 20px;
    }
}