/* ==============================================
   AiXcel Blog - 共通スタイルシート
   /static/css/blog.css
   ============================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans',
                 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
    line-height: 1.8;
    color: #333;
    background: #f8f9fa;
}

/* ヘッダー */
header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo-image { height: 32px; width: auto; }
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    color: #1f2937;
    text-decoration: none;
}
.logo span { color: #21c4a6; }

nav a { margin-left: 30px; color: #1A9FDE; text-decoration: none; }
nav a:hover { opacity: .5; }

/* ハンバーガーメニュー */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
    background: none;
    border: none;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: #1f2937;
    border-radius: 2px;
    transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* モバイルメニュー */
.mobile-menu {
    display: none;
    flex-direction: column;
    background: white;
    border-top: 1px solid #e5e7eb;
    padding: 16px 20px;
    gap: 16px;
    width: 100%;
    position: fixed;
    left: 0;
    right: 0;
    z-index: 99;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.mobile-menu.open { display: flex; }
.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
    border-bottom: 1px solid #e5e7eb;
}
.mobile-menu-header .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    color: #1f2937;
    text-decoration: none;
}
.mobile-menu-close {
    background: none;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
    cursor: pointer;
    color: #6b7280;
    display: flex;
    align-items: center;
    justify-content: center;
}
.mobile-menu-links {
    display: flex;
    flex-direction: column;
    padding: 20px;
    gap: 0;
}
.mobile-menu-links a {
    color: #1A9FDE;
    text-decoration: none;
    font-size: 1rem;
    padding: 16px 0;
    border-bottom: 1px solid #f3f4f6;
}
.mobile-menu-links a:last-child { border-bottom: none; }

/* パンくずリスト */
.breadcrumb {
    max-width: 860px;
    margin: 20px auto;
    padding: 0 20px;
    font-size: 0.9rem;
    color: #6b7280;
}
.breadcrumb a { color: #1aa0de; text-decoration: none; }

/* 記事レイアウト */
.article-container {
    max-width: 860px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

.article-header {
    background: white;
    border-radius: 12px;
    padding: 40px 40px 0 40px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    overflow: hidden;
}

.article-category {
    display: inline-block;
    padding: 5px 14px;
    background: #e4f1f7;
    color: #1aa0de;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 16px;
    margin-top: 16px;
}

.article-title {
    font-size: 2rem;
    line-height: 1.4;
    color: #1f2937;
    margin-bottom: 12px;
}

.article-date { color: #9ca3af; font-size: 0.9rem; }

/* アイキャッチ */
.article-eyecatch {
    width: calc(100% + 80px);
    margin-left: -40px;
    margin-right: -40px;
    max-height: 420px;
    object-fit: cover;
    margin-top: 20px;
    display: block;
    border-radius: 0 0 8px 8px;
}

.eyecatch-wrapper {
    position: relative;
    margin-left: -40px;
    margin-right: -40px;
    margin-top: 20px;
}
.eyecatch-wrapper .article-eyecatch { width: 100%; margin: 0; }
.eyecatch-wrapper .article-category {
    position: absolute;
    top: 16px;
    left: 26px;
    margin: 0;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    opacity: 0.94;
}

/* 記事本文 */
.article-body {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.article-body p { margin-bottom: 1.2rem; }

.article-body h2 {
    font-size: 1.6rem;
    color: #024560;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #21c4a6;
}

.article-body h3 {
    font-size: 1.2rem;
    color: #1f2937;
    margin: 1.8rem 0 0.8rem;
    padding-left: 12px;
    border-left: 4px solid #21c4a6;
}

.article-body ul, .article-body ol {
    padding-left: 1.5rem;
    margin-bottom: 1.2rem;
}

.article-body li { margin-bottom: 0.5rem; }

/* ハイライトボックス */
.highlight-box {
    background: #f0fdf9;
    border-left: 4px solid #21c4a6;
    padding: 18px 20px;
    border-radius: 0 8px 8px 0;
    margin: 1.5rem 0;
}
.highlight-box strong { color: #024560; }

/* 警告ボックス */
.warn-box {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 18px 20px;
    border-radius: 0 8px 8px 0;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

/* テーブル */
.compare-table-wrap { overflow-x: auto; margin: 1.5rem 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th { background: #024560; color: white; padding: 12px 16px; text-align: left; }
td { padding: 11px 16px; border-bottom: 1px solid #e5e7eb; vertical-align: middle; }
tr:nth-child(even) td { background: #f9fafb; }
tr.aixcel-row td { background: #f0fdf9; font-weight: 600; }

/* CTAボックス */
.cta-box {
    background: linear-gradient(135deg, #024560 0%, #00c0fa 100%);
    color: white;
    border-radius: 20px;
    padding: 35px 20px;
    text-align: center;
    margin: 2.5rem 0;
}
.cta-box h3 { font-size: 1.4rem; margin-bottom: 10px; color: white; border: none; padding: 0; }
.cta-box p { opacity: 0.9; margin-bottom: 20px; }
.cta-button {
    display: inline-block;
    padding: 14px 40px;
    background: linear-gradient(135deg, #21c4a6 0%, #b1e56c 100%);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.05rem;
    text-shadow: 1px 1px 7px rgba(0,0,0,0.15);
    transition: transform 0.2s;
}
.cta-button:hover { transform: translateY(-2px); }

/* 目次 */
.toc {
    background: #f8f9fa;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 24px 28px;
    margin: 1.5rem 0 2rem;
}
.toc h4 { font-size: 1rem; color: #374151; margin-bottom: 12px; }
.toc ol { padding-left: 1.5rem; margin: 0; }
.toc li { margin-bottom: 6px; }
.toc a { color: #1aa0de; text-decoration: none; }
.toc a:hover { text-decoration: underline; }

/* FAQアコーディオン */
.faq-item {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-q {
    padding: 16px 20px;
    font-weight: 700;
    font-size: 0.95rem;
    color: #024560;
    border-left: 4px solid #21c4a6;
}
.faq-a {
    padding: 12px 20px 16px;
    color: #4b5563;
    font-size: 0.92rem;
    line-height: 1.7;
    background: #f9fafb;
}

/* ステップ */
.step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 24px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
}
.step-num {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #21c4a6, #b1e56c);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}
.step-content strong { display: block; font-size: 1.05rem; margin-bottom: 6px; color: #024560; }
.step-content p { margin: 0; font-size: 0.95rem; color: #4b5563; }

.step-box {
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 10px;
    padding: 20px 24px;
    margin: 1.5rem 0;
}
.step-box h4 { color: #0369a1; margin-bottom: 12px; }

/* 機能カード */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 1.5rem 0;
}
.feature-card {
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 20px;
    background: white;
}
.feature-card .icon { font-size: 1.8rem; margin-bottom: 10px; }
.feature-card h4 { font-size: 1rem; color: #024560; margin-bottom: 6px; }
.feature-card p { font-size: 0.9rem; color: #6b7280; margin: 0; }

/* 料金カード */
.price-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin: 1.5rem 0;
}
.price-card {
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}
.price-card.featured { border-color: #21c4a6; background: #f0fdf9; }
.price-card .plan-name { font-size: 0.85rem; color: #6b7280; margin-bottom: 8px; }
.price-card .plan-price { font-size: 1.8rem; font-weight: 700; color: #024560; }
.price-card .plan-unit { font-size: 0.8rem; color: #6b7280; margin-top: 4px; }
.price-card .plan-desc { font-size: 0.85rem; color: #4b5563; margin-top: 10px; }

/* サービス概要ボックス */
.service-summary {
    background: linear-gradient(135deg, #024560 0%, #00c0fa 100%);
    color: white;
    border-radius: 16px;
    padding: 32px;
    margin: 1.5rem 0;
}
.service-summary h3 { font-size: 1.3rem; margin-bottom: 16px; color: white; border: none; padding: 0; }
.service-summary ul { padding-left: 1.5rem; margin: 0; }
.service-summary li { margin-bottom: 8px; opacity: 0.95; }

/* pros-cons */
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 1.5rem 0; }
.pros, .cons { border-radius: 12px; padding: 20px; }
.pros { background: #f0fdf9; border: 1px solid #21c4a6; }
.cons { background: #fff5f5; border: 1px solid #f87171; }
.pros h4 { color: #059669; margin-bottom: 10px; }
.cons h4 { color: #dc2626; margin-bottom: 10px; }

/* コスト削減ボックス */
.cost-saving {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border-radius: 12px;
    padding: 24px;
    margin: 1.5rem 0;
}
.cost-saving h4 { font-size: 1.1rem; margin-bottom: 12px; }
.cost-saving .value { font-size: 2rem; font-weight: 700; margin: 8px 0; }
.cost-saving p { margin: 8px 0; opacity: 0.95; }

/* tax-example */
.tax-example { background: #f0f9ff; padding: 20px; border-radius: 8px; margin: 20px 0; }

/* フッター */
footer {
    background: #1f2937;
    color: white;
    padding: 40px 20px;
    margin-top: 80px;
    text-align: center;
}

/* レスポンシブ */
@media (max-width: 768px) {
    nav { display: none !important; }
    .hamburger { display: flex !important; }
    .logo span { display: none; }

    .article-header, .article-body { padding: 25px 20px 0 20px; }
    .article-body { padding: 25px 20px; }
    .article-title { font-size: 1.5rem; }

    .article-eyecatch {
        width: calc(100% + 40px);
        margin-left: -20px;
        margin-right: -20px;
    }

    .eyecatch-wrapper {
        margin-left: -20px;
        margin-right: -20px;
    }

    .feature-grid { grid-template-columns: 1fr; }
    .price-cards { grid-template-columns: 1fr; }
    .pros-cons { grid-template-columns: 1fr; }

    table { font-size: 0.85rem; }
    table th, table td { padding: 8px 10px; }
}

/* メニューオーバーレイ（ブラー） */
.menu-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 98;
}
.menu-overlay.open { display: block; }