/* ===========================================
   インフラカテゴリ - サーバーダッシュボード風デザイン
   ネットワーク監視コンソール・ブループリントのような
   プロフェッショナルなレイアウト
   =========================================== */

:root {
    --infra-bg: #0f172a;
    --infra-bg-surface: #1e293b;
    --infra-bg-card: #253347;
    --infra-bg-content: #ffffff;
    --infra-bg-content-alt: #f8fafc;
    --infra-border: #334155;
    --infra-border-light: #475569;
    --infra-border-content: #e2e8f0;
    --infra-text-hero: #e2e8f0;
    --infra-text-hero-muted: #94a3b8;
    --infra-text: #1e293b;
    --infra-text-secondary: #475569;
    --infra-text-muted: #94a3b8;
    --infra-cyan: #06b6d4;
    --infra-cyan-dark: #0891b2;
    --infra-cyan-glow: rgba(6, 182, 212, 0.15);
    --infra-cyan-subtle: rgba(6, 182, 212, 0.08);
    --infra-green: #10b981;
    --infra-green-glow: rgba(16, 185, 129, 0.2);
    --infra-amber: #f59e0b;
    --infra-grid-color: rgba(6, 182, 212, 0.06);
}

/* ===== ヒーローセクション ===== */
.infra-hero {
    background: var(--infra-bg);
    padding: 0 0 48px;
    position: relative;
    overflow: hidden;
}

.infra-hero__grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--infra-grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--infra-grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black 30%, transparent 100%);
}

.infra-hero__container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ステータスバー */
.infra-hero__status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: var(--infra-bg-surface);
    border-bottom: 1px solid var(--infra-border);
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    letter-spacing: 0.05em;
    margin: 0 -24px;
    padding-left: 44px;
    padding-right: 44px;
}

.infra-hero__status-left,
.infra-hero__status-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.infra-hero__status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--infra-green);
    font-weight: 600;
}

.infra-hero__status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--infra-green);
    box-shadow: 0 0 8px var(--infra-green-glow);
    animation: infra-pulse 2s ease-in-out infinite;
}

@keyframes infra-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--infra-green-glow); }
    50% { opacity: 0.6; box-shadow: 0 0 16px var(--infra-green-glow); }
}

.infra-hero__status-id {
    color: var(--infra-text-hero-muted);
}

.infra-hero__status-region {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--infra-cyan);
}

.infra-hero__status-region svg {
    stroke: var(--infra-cyan);
}

/* パンくずリスト */
.infra-hero__breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 12px;
    margin-top: 28px;
    margin-bottom: 24px;
    padding: 10px 16px;
    background: var(--infra-bg-surface);
    border: 1px solid var(--infra-border);
    border-radius: 8px;
}

.infra-hero__breadcrumb-icon {
    display: inline-flex;
    margin-right: 8px;
    color: var(--infra-text-hero-muted);
}

.infra-hero__breadcrumb-icon svg {
    stroke: var(--infra-text-hero-muted);
}

.infra-hero__breadcrumb a {
    color: var(--infra-cyan);
    text-decoration: none;
    transition: color 0.2s;
}

.infra-hero__breadcrumb a:hover {
    color: #22d3ee;
    text-decoration: underline;
}

.infra-hero__breadcrumb-sep {
    margin: 0 6px;
    color: var(--infra-text-hero-muted);
    display: inline-flex;
    align-items: center;
}

.infra-hero__breadcrumb-sep svg {
    stroke: var(--infra-border-light);
}

.infra-hero__breadcrumb-current {
    color: var(--infra-text-hero-muted);
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* タイトルエリア */
.infra-hero__title-area {
    margin-bottom: 32px;
}

.infra-hero__title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 32px;
    font-weight: 800;
    color: #f1f5f9;
    line-height: 1.4;
    margin: 0 0 20px;
    letter-spacing: -0.02em;
    position: relative;
    padding-left: 20px;
}

.infra-hero__title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    background: linear-gradient(180deg, var(--infra-cyan), var(--infra-green));
    border-radius: 2px;
}

/* タグ */
.infra-hero__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-left: 20px;
}

.infra-hero__tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    color: var(--infra-cyan);
    text-decoration: none;
    padding: 4px 12px;
    background: var(--infra-cyan-subtle);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: 4px;
    transition: all 0.2s;
}

.infra-hero__tag svg {
    stroke: var(--infra-cyan);
}

.infra-hero__tag:hover {
    background: rgba(6, 182, 212, 0.2);
    border-color: var(--infra-cyan);
    color: #22d3ee;
}

/* メトリクスパネル */
.infra-hero__metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--infra-border);
    border: 1px solid var(--infra-border);
    border-radius: 12px;
    overflow: hidden;
}

.infra-hero__metric {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 22px;
    background: var(--infra-bg-surface);
    transition: background 0.2s;
}

.infra-hero__metric:hover {
    background: var(--infra-bg-card);
}

.infra-hero__metric-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--infra-cyan-subtle);
    flex-shrink: 0;
}

.infra-hero__metric-icon svg {
    stroke: var(--infra-cyan);
}

.infra-hero__metric-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.infra-hero__metric-label {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10px;
    font-weight: 600;
    color: var(--infra-text-hero-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.infra-hero__metric-value {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 13px;
    font-weight: 500;
    color: var(--infra-text-hero);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== レイアウト: メインコンテンツ + 右サイドバー ===== */
.article-main--infra {
    max-width: 1440px;
    margin: 0 auto;
    min-height: 60vh;
}

.article-sidebar--infra {
    padding: 28px 20px;
    background: var(--infra-bg);
    border-left: 1px solid var(--infra-border);
    position: sticky;
    top: 80px;
    align-self: start;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--infra-border) transparent;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.article-body--infra {
    padding: clamp(26px, 3.2vw, 44px);
    background: var(--infra-bg-content);
    max-width: 820px;
}

/* ===== サイドバー要素 ===== */
.infra-sidebar__nav-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10px;
    font-weight: 700;
    color: var(--infra-text-hero-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0 4px 16px;
    border-bottom: 1px solid var(--infra-border);
    margin-bottom: 20px;
}

.infra-sidebar__nav-header svg {
    stroke: var(--infra-text-hero-muted);
}

/* 関連ドキュメント */
.infra-sidebar__section {
    margin-top: 24px;
}

.infra-sidebar__section-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10px;
    font-weight: 700;
    color: var(--infra-text-hero-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--infra-border);
    margin-bottom: 12px;
}

.infra-sidebar__section-header svg {
    stroke: var(--infra-text-hero-muted);
}

.infra-sidebar__doc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.infra-sidebar__doc-item {
    border-bottom: 1px solid rgba(51, 65, 85, 0.5);
}

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

.infra-sidebar__doc-link {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 4px;
    text-decoration: none;
    transition: all 0.2s;
    border-radius: 4px;
}

.infra-sidebar__doc-link:hover {
    background: var(--infra-cyan-subtle);
}

.infra-sidebar__doc-icon {
    flex-shrink: 0;
    margin-top: 3px;
    color: var(--infra-border-light);
    transition: color 0.2s;
}

.infra-sidebar__doc-link:hover .infra-sidebar__doc-icon {
    color: var(--infra-cyan);
}

.infra-sidebar__doc-icon svg {
    stroke: currentColor;
}

.infra-sidebar__doc-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
    min-width: 0;
}

.infra-sidebar__doc-title {
    font-size: 12.5px;
    color: var(--infra-text-hero);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.infra-sidebar__doc-link:hover .infra-sidebar__doc-title {
    color: var(--infra-cyan);
}

.infra-sidebar__doc-date {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10px;
    color: var(--infra-text-hero-muted);
}

/* ドキュメント情報 */
.infra-sidebar__info-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--infra-bg-surface);
    border: 1px solid var(--infra-border);
    border-radius: 8px;
    overflow: hidden;
}

.infra-sidebar__info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-bottom: 1px solid var(--infra-border);
}

.infra-sidebar__info-row:last-child {
    border-bottom: none;
}

.infra-sidebar__info-key {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10px;
    color: var(--infra-text-hero-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.infra-sidebar__info-val {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    color: var(--infra-text-hero);
}

.infra-sidebar__info-val--active {
    color: var(--infra-green);
    position: relative;
    padding-left: 14px;
}

.infra-sidebar__info-val--active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--infra-green);
}

/* ===== 記事本文カスタマイズ ===== */
.single-wrapper--infra {
    background: var(--infra-bg-content);
}

.single-wrapper--infra .article-content h2 {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--infra-text);
    padding: 16px 20px;
    margin-top: 56px;
    margin-bottom: 28px;
    background: linear-gradient(135deg, #f0f9ff, #f0fdfa);
    border-left: 4px solid var(--infra-cyan);
    border-radius: 0 8px 8px 0;
    position: relative;
}

.single-wrapper--infra .article-content h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--infra-cyan), transparent);
}

.single-wrapper--infra .article-content h3 {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 19px;
    font-weight: 600;
    color: var(--infra-text);
    margin-top: 40px;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--infra-border-content);
    position: relative;
}

.single-wrapper--infra .article-content h3::before {
    content: '▍';
    color: var(--infra-cyan);
    margin-right: 8px;
    font-size: 16px;
}

.single-wrapper--infra .article-content h4 {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 16px;
    font-weight: 600;
    color: var(--infra-text-secondary);
    margin-top: 32px;
    padding-left: 12px;
    border-left: 3px solid var(--infra-border-content);
}

.single-wrapper--infra .article-content p {
    color: var(--infra-text-secondary);
    line-height: 1.9;
    font-size: 15px;
}

.single-wrapper--infra .article-content a {
    color: var(--infra-cyan-dark);
    text-decoration: none;
    border-bottom: 1px solid rgba(6, 182, 212, 0.3);
    transition: all 0.2s;
}

.single-wrapper--infra .article-content a:hover {
    color: var(--infra-cyan);
    border-bottom-color: var(--infra-cyan);
}

.single-wrapper--infra .article-content code {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 4px;
    padding: 2px 7px;
    font-size: 0.85em;
    color: var(--infra-cyan-dark);
}

.single-wrapper--infra .article-content pre {
    background: var(--infra-bg) !important;
    border: 1px solid var(--infra-border);
    border-radius: 8px;
    position: relative;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.1);
}

.single-wrapper--infra .article-content pre::before {
    content: '';
    display: block;
    height: 36px;
    background: var(--infra-bg-surface);
    border-bottom: 1px solid var(--infra-border);
    border-radius: 8px 8px 0 0;
    margin: -16px -16px 16px;
    padding: 0 16px;
    background-image: radial-gradient(circle at 20px 50%, #f85149 5px, transparent 5px),
                       radial-gradient(circle at 40px 50%, #f59e0b 5px, transparent 5px),
                       radial-gradient(circle at 60px 50%, #10b981 5px, transparent 5px);
    background-repeat: no-repeat;
}

.single-wrapper--infra .article-content pre code {
    color: #e2e8f0;
    background: transparent;
    border: none;
    padding: 0;
}

.single-wrapper--infra .article-content blockquote {
    border-left: 4px solid var(--infra-cyan);
    background: linear-gradient(135deg, #f0f9ff, #ecfeff);
    padding: 20px 24px;
    margin: 28px 0;
    border-radius: 0 12px 12px 0;
    color: var(--infra-text);
    position: relative;
}

.single-wrapper--infra .article-content blockquote::before {
    content: 'NOTE';
    position: absolute;
    top: -10px;
    left: 16px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10px;
    font-weight: 700;
    color: var(--infra-cyan);
    background: var(--infra-bg-content);
    padding: 2px 8px;
    border: 1px solid #bae6fd;
    border-radius: 4px;
    letter-spacing: 0.05em;
}

.single-wrapper--infra .article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 14px;
    border: 1px solid var(--infra-border-content);
    border-radius: 8px;
    overflow: hidden;
}

.single-wrapper--infra .article-content table th {
    background: var(--infra-bg);
    color: var(--infra-text-hero);
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    font-weight: 600;
    text-align: left;
    padding: 12px 16px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-bottom: 2px solid var(--infra-cyan);
}

.single-wrapper--infra .article-content table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--infra-border-content);
    color: var(--infra-text-secondary);
}

.single-wrapper--infra .article-content table tr:hover td {
    background: #f8fafc;
}

.single-wrapper--infra .article-content ul,
.single-wrapper--infra .article-content ol {
    padding-left: 24px;
}

.single-wrapper--infra .article-content li {
    line-height: 1.9;
    color: var(--infra-text-secondary);
    margin-bottom: 4px;
}

.single-wrapper--infra .article-content li::marker {
    color: var(--infra-cyan);
}

.single-wrapper--infra .article-content img {
    border-radius: 8px;
    border: 1px solid var(--infra-border-content);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.single-wrapper--infra .article-content hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--infra-border-content), transparent);
    margin: 48px 0;
}

/* ===== 記事フッター ===== */
.infra-article-footer {
    margin-top: 64px;
}

.infra-article-footer__divider {
    text-align: center;
    position: relative;
    margin-bottom: 32px;
}

.infra-article-footer__divider::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--infra-border-content), transparent);
}

.infra-article-footer__divider-text {
    position: relative;
    background: var(--infra-bg-content);
    padding: 0 20px;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10px;
    font-weight: 600;
    color: var(--infra-text-muted);
    letter-spacing: 0.15em;
}

.infra-article-footer__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    padding: 28px 0;
}

.infra-article-footer__author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.infra-article-footer__author img {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: 2px solid var(--infra-border-content);
}

.infra-article-footer__author-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.infra-article-footer__author-label {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 10px;
    color: var(--infra-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.infra-article-footer__author-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--infra-text);
}

.infra-article-footer__categories {
    display: flex;
    gap: 8px;
}

.infra-article-footer__cat {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 11px;
    color: var(--infra-cyan-dark);
    text-decoration: none;
    padding: 6px 14px;
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s;
}

.infra-article-footer__cat:hover {
    background: var(--infra-cyan);
    border-color: var(--infra-cyan);
    color: #ffffff;
}

/* ===== ナビゲーション ===== */
.post-navigation--infra {
    background: var(--infra-bg);
    border-top: 1px solid var(--infra-border);
    padding-top: 56px;
    padding-bottom: 72px;
    position: relative;
}

.post-navigation--infra::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--infra-grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--infra-grid-color) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    opacity: 0.5;
}

.post-navigation--infra .post-navigation__container {
    position: relative;
    z-index: 1;
}

.post-navigation--infra .post-navigation__item {
    border: 1px solid var(--infra-border);
    background: var(--infra-bg-surface);
    padding: 24px;
    border-radius: 12px;
    transition: all 0.3s;
}

.post-navigation--infra .post-navigation__item:hover {
    border-color: var(--infra-cyan);
    background: var(--infra-bg-card);
    box-shadow: 0 0 20px var(--infra-cyan-subtle);
}

.post-navigation--infra .post-navigation__direction {
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    color: var(--infra-text-hero-muted);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.post-navigation--infra .post-navigation__title {
    color: var(--infra-text-hero);
}

.post-navigation--infra .post-navigation__item:hover .post-navigation__title {
    color: var(--infra-cyan);
}

.post-navigation--infra .post-navigation__arrow svg {
    stroke: var(--infra-text-hero-muted);
}

.post-navigation--infra .post-navigation__item:hover .post-navigation__arrow svg {
    stroke: var(--infra-cyan);
}

/* ===== SNSボタンの位置調整 ===== */

/* ===== レスポンシブ ===== */
@media (max-width: 1024px) {
    .infra-hero__metrics {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 960px) {
    .article-sidebar--infra {
        position: static;
        max-height: none;
        border-left: none;
        border-bottom: 1px solid var(--infra-border);
        padding: 24px 20px;
    }
}

@media (max-width: 768px) {
    .infra-hero__status-bar {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
        padding-left: 24px;
        padding-right: 24px;
    }

    .infra-hero__title {
        font-size: 24px;
    }

    .infra-hero__metrics {
        grid-template-columns: 1fr;
    }

    .infra-hero__metric {
        padding: 16px 18px;
    }

    .infra-hero__breadcrumb {
        font-size: 11px;
    }

    .infra-hero__breadcrumb-current {
        max-width: 200px;
    }

    .article-body--infra {
        padding: clamp(16px, 3vw, 28px);
    }

    .post-navigation--infra {
        padding-top: 40px;
        padding-bottom: 56px;
    }

    .post-navigation--infra .post-navigation__item {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .infra-hero__status-left {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }

    .infra-hero__tags {
        padding-left: 0;
    }

    .infra-hero__title {
        padding-left: 16px;
        font-size: 22px;
    }
}