/* Notion Design System — Multi-Agent Design Blog */

:root {
  --blog-bg: var(--bg-primary, #0a1628);
  --blog-surface: rgba(15, 29, 50, 0.78);
  --blog-surface-strong: rgba(20, 36, 64, 0.92);
  --blog-border: rgba(0, 212, 255, 0.14);
  --blog-border-hover: rgba(0, 212, 255, 0.36);
  --blog-text: var(--text-primary, #e8edf5);
  --blog-muted: var(--text-secondary, #8899b0);
  --blog-heading: var(--text-heading, #ffffff);
  --blog-accent: var(--accent-blue, #00d4ff);
  --blog-accent-2: var(--accent-amber, #ffb800);
  --blog-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
  --blog-radius: 8px;
  --sidebar-width: 300px;
  --blog-font: 'Inter', 'Noto Sans JP', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

.blog-page {
  font-family: var(--blog-font);
  color: var(--blog-text);
  background: var(--blog-bg);
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 10000;
  padding: 10px 14px;
  border-radius: var(--blog-radius);
  background: var(--blog-accent);
  color: #06111f;
  font-weight: 700;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 16px; }

.blog-main {
  min-height: calc(100vh - var(--header-height, 64px));
  padding: calc(var(--header-height, 64px) + 32px) 0 72px;
  background:
    radial-gradient(circle at top left, rgba(0, 212, 255, 0.12), transparent 32rem),
    radial-gradient(circle at 85% 20%, rgba(255, 184, 0, 0.08), transparent 28rem),
    var(--blog-bg);
}

.blog-hero {
  max-width: var(--max-width, 1200px);
  margin: 0 auto 32px;
  padding: 0 24px 28px;
  border-bottom: 1px solid var(--blog-border);
}
.blog-hero .container { padding: 0; }
.blog-hero h1 {
  margin: 0 0 12px;
  color: var(--blog-heading);
  font-family: var(--blog-font);
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}
.blog-hero p {
  max-width: 760px;
  margin: 0;
  color: var(--blog-muted);
  font-size: 1.05rem;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  color: var(--blog-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.blog-container,
.content-wrapper {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--sidebar-width);
  gap: 32px;
  align-items: start;
  width: 100%;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 24px;
}
.blog-main-content,
.main-content { min-width: 0; }
.section-header {
  margin-bottom: 20px;
  padding: 22px;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-surface);
  box-shadow: var(--blog-shadow);
}
.section-header h2 { margin: 0 0 8px; color: var(--blog-heading); }
.section-header p { margin: 0; color: var(--blog-muted); }

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.blog-card,
.card {
  overflow: hidden;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-surface);
  box-shadow: 0 10px 30px rgba(0,0,0,0.18);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}
.blog-card:hover,
.card:hover {
  transform: translateY(-3px);
  border-color: var(--blog-border-hover);
  box-shadow: 0 18px 48px rgba(0, 212, 255, 0.12);
}
.blog-card a,
.card a { color: inherit; text-decoration: none; }
.card-thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0,212,255,0.14), rgba(255,184,0,0.10));
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.25s ease; }
.blog-card:hover .card-thumb img,
.card:hover .card-thumb img { transform: scale(1.04); }
.card-body { padding: 22px; }
.card-body time {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--blog-accent);
  font-size: 0.82rem;
  font-weight: 700;
}
.card-body h3 { margin: 0 0 10px; color: var(--blog-heading); font-size: 1.12rem; line-height: 1.45; }
.card-body p { margin: 0; color: var(--blog-muted); font-size: 0.95rem; line-height: 1.75; }
.empty-state { grid-column: 1 / -1; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: calc(var(--header-height, 64px) + 18px);
  color: var(--blog-muted);
  font-size: 0.9rem;
}
.breadcrumb a { color: var(--blog-accent); }
.breadcrumb .sep { color: rgba(232,237,245,0.35); }

.article-header {
  margin-bottom: 24px;
  padding: 28px;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-surface);
  box-shadow: var(--blog-shadow);
}
.article-title,
.blog-article h1 {
  margin: 0 0 14px;
  color: var(--blog-heading);
  font-family: var(--blog-font);
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}
.article-meta { margin: 0; color: var(--blog-muted); }
.featured-image {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  margin-bottom: 24px;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  box-shadow: var(--blog-shadow);
}
.article-body {
  padding: 32px;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-surface);
  box-shadow: var(--blog-shadow);
}
.article-body h2,
.article-body h3,
.article-body h4 { color: var(--blog-heading); font-family: var(--blog-font); line-height: 1.35; }
.article-body h2 { margin: 2rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--blog-border); }
.article-body h3 { margin: 1.6rem 0 0.8rem; }
.article-body p,
.article-body li { color: var(--blog-text); line-height: 1.9; }
.article-body a { color: var(--blog-accent); text-underline-offset: 0.18em; }
.article-body blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border-left: 3px solid var(--blog-accent);
  border-radius: 0 var(--blog-radius) var(--blog-radius) 0;
  background: rgba(0, 212, 255, 0.08);
}
.article-body code {
  padding: 0.15em 0.35em;
  border-radius: 6px;
  background: rgba(255,255,255,0.08);
  color: var(--blog-accent-2);
}
.article-body pre { overflow-x: auto; padding: 1rem; border-radius: var(--blog-radius); background: #06111f; }

.blog-sidebar,
.sidebar {
  position: sticky;
  top: calc(var(--header-height, 64px) + 24px);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.sidebar-widget,
.sidebar-section {
  padding: 18px;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-surface);
  box-shadow: 0 10px 28px rgba(0,0,0,0.18);
}
.widget-title,
.sidebar-widget h2,
.sidebar-widget h3,
.sidebar-section h2,
.sidebar-section h3 {
  margin: 0 0 12px;
  color: var(--blog-heading);
  font-size: 1rem;
  font-family: var(--blog-font);
}
.sidebar-widget p,
.sidebar-section p { margin: 0; color: var(--blog-muted); font-size: 0.9rem; line-height: 1.7; }
.sidebar-nav,
.sidebar-list,
.toc-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.sidebar-nav a,
.sidebar-list a,
.toc-list a {
  display: block;
  padding: 9px 10px;
  border-radius: 7px;
  color: var(--blog-text);
  background: rgba(255,255,255,0.035);
}
.sidebar-nav a:hover,
.sidebar-list a:hover,
.toc-list a:hover { color: var(--blog-accent); background: rgba(0,212,255,0.10); }
.ad-placeholder,
.amazon-ad {
  border-style: dashed;
  background: linear-gradient(135deg, rgba(0,212,255,0.10), rgba(255,184,0,0.08));
}
.ad-label {
  display: inline-flex;
  margin-bottom: 8px;
  padding: 3px 8px;
  border-radius: 9999px;
  color: #06111f;
  background: var(--blog-accent-2);
  font-size: 0.7rem;
  font-weight: 800;
}
.sitenavi-middle,
.sitenavi-bottom { min-height: 120px; }

.share-buttons { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.share-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border: 1px solid var(--blog-border);
  border-radius: var(--blog-radius);
  background: var(--blog-surface-strong);
  color: var(--blog-text);
  font-weight: 700;
}
.share-button:hover { border-color: var(--blog-border-hover); color: var(--blog-accent); }

@media (max-width: 768px) {
  :root { --sidebar-width: 300px; }
  .blog-main { padding-top: calc(var(--header-height, 64px) + 24px); }
  .blog-container,
  .content-wrapper {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 16px;
  }
  .blog-sidebar,
  .sidebar { position: static; }
  .blog-hero { padding: 0 16px 22px; }
  .article-header,
  .article-body,
  .section-header,
  .sidebar-widget,
  .sidebar-section { padding: 18px; }
  .blog-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .blog-hero h1 { font-size: 2.05rem; }
  .card-body { padding: 18px; }
  .share-buttons { flex-direction: column; }
  .share-button { width: 100%; }
}