/**
 * アフィリエイトリンク専用スタイルシート
 * Penguin Gym Linux - Linux学習プラットフォーム
 *
 * Amazon アソシエイトトラッキングID: passionetech-22
 */

/* ============================================
   アフィリエイト開示ボックス
   ============================================ */

.affiliate-disclosure {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-left: 4px solid var(--secondary-color, #667eea);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    font-size: 0.9rem;
    color: #495057;
    line-height: 1.8;
}

.affiliate-disclosure strong {
    color: var(--secondary-color, #667eea);
    font-size: 1.1rem;
    display: block;
    margin-bottom: 0.5rem;
}

.affiliate-disclosure p {
    margin: 0;
}

/* ============================================
   推奨商品セクション
   ============================================ */

.recommended-books {
    background: #ffffff;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 2rem;
    margin: 3rem 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
}

.recommended-books h2,
.recommended-books h3 {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--secondary-color, #667eea);
}

.recommended-books > p {
    color: #495057;
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

/* ============================================
   商品カード
   ============================================ */

.book-item {
    display: block;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.book-item:last-child {
    margin-bottom: 0;
}

.book-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.book-details {
    display: flex;
    flex-direction: column;
}

.book-details h4 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.book-details p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    flex: 1;
}

.book-details strong {
    color: var(--secondary-color, #667eea);
    font-weight: 600;
}

/* ============================================
   アフィリエイトリンクボタン
   ============================================ */

.affiliate-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: auto;
}

.affiliate-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-primary, linear-gradient(135deg, #667eea 0%, #764ba2 100%));
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: opacity 0.3s ease, transform 0.2s ease;
    box-shadow: 0 2px 4px rgba(102, 126, 234, 0.3);
    border: none;
    cursor: pointer;
}

.affiliate-link:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.4);
    color: white;
}

.affiliate-link:active {
    transform: translateY(0);
}

.affiliate-link::before {
    content: "📚";
    font-size: 1.2rem;
}

/* 楽天リンク用の色変更（将来対応） */
.affiliate-link.rakuten {
    background: linear-gradient(135deg, #bf0000 0%, #8b0000 100%);
}

.affiliate-link.rakuten::before {
    content: "🛒";
}

/* ============================================
   サイドバー用コンパクト表示
   ============================================ */

.sidebar .recommended-books {
    padding: 1.5rem;
    margin: 2rem 0;
}

.sidebar .book-item {
    padding: 1rem;
}

.sidebar .book-details h4 {
    font-size: 1rem;
}

.sidebar .book-details p {
    font-size: 0.85rem;
}

.sidebar .affiliate-links {
    justify-content: center;
}

.sidebar .affiliate-link {
    font-size: 0.85rem;
    padding: 0.6rem 1.2rem;
}

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

/* タブレット */
@media (max-width: 768px) {
    .affiliate-links {
        justify-content: center;
    }

    .recommended-books {
        padding: 1.5rem;
    }
}

/* スマートフォン */
@media (max-width: 480px) {
    .affiliate-disclosure {
        padding: 1rem;
        font-size: 0.85rem;
    }

    .affiliate-disclosure strong {
        font-size: 1rem;
    }

    .recommended-books {
        padding: 1rem;
        margin: 2rem 0;
    }

    .recommended-books h3 {
        font-size: 1.2rem;
    }

    .book-item {
        padding: 1rem;
    }

    .book-details h4 {
        font-size: 1.1rem;
    }

    .book-details p {
        font-size: 0.9rem;
    }

    .affiliate-link {
        font-size: 0.85rem;
        padding: 0.6rem 1.2rem;
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   印刷時の調整
   ============================================ */

@media print {
    .affiliate-disclosure {
        border-left: 4px solid #000;
        box-shadow: none;
    }

    .affiliate-link {
        background: #333;
        box-shadow: none;
    }

    .affiliate-link::after {
        content: " (" attr(href) ")";
        font-size: 0.7rem;
        color: #666;
    }
}

/* ============================================
   アクセシビリティ対応
   ============================================ */

.affiliate-link:focus {
    outline: 3px solid var(--secondary-color, #667eea);
    outline-offset: 2px;
}

/* ハイコントラストモード対応 */
@media (prefers-contrast: high) {
    .affiliate-disclosure {
        border-width: 3px;
    }

    .book-item {
        border: 2px solid #333;
    }

    .affiliate-link {
        border: 2px solid white;
    }
}

/* ダークモード対応 */
@media (prefers-color-scheme: dark) {
    .affiliate-disclosure {
        background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
        color: #e2e8f0;
        border-left-color: #667eea;
    }

    .affiliate-disclosure strong {
        color: #a5b4fc;
    }

    .recommended-books {
        background: #1a202c;
        border-color: #4a5568;
        color: #e2e8f0;
    }

    .recommended-books h2,
    .recommended-books h3 {
        color: #f7fafc;
        border-bottom-color: #667eea;
    }

    .recommended-books > p {
        color: #e2e8f0;
    }

    .book-item {
        background: #2d3748;
    }

    .book-details h4 {
        color: #f7fafc;
    }

    .book-details p {
        color: #cbd5e0;
    }

    .book-details strong {
        color: #a5b4fc;
    }
}