/* Notion Design System - wearable-reading blog */
:root {
  --notion-font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Noto Sans JP', sans-serif;
  --notion-bg: #fdfbf7;
  --notion-surface: #ffffff;
  --notion-surface-soft: #fbf7ef;
  --notion-text: #2a3a29;
  --notion-muted: #6f766d;
  --notion-border: rgba(42, 58, 41, 0.12);
  --notion-accent: #c19a6b;
  --notion-accent-soft: rgba(193, 154, 107, 0.14);
  --notion-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(42, 58, 41, 0.07);
}

body {
  font-family: var(--notion-font-sans);
  background:
    radial-gradient(circle at top left, rgba(193, 154, 107, 0.12), transparent 32rem),
    var(--notion-bg);
  color: var(--notion-text);
}

.blog-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 48px 20px 72px;
}

.blog-hero {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(251, 247, 239, 0.92));
  border: 1px solid var(--notion-border);
  border-radius: 8px;
  box-shadow: var(--notion-shadow);
  padding: 40px;
  margin-bottom: 28px;
}

.blog-kicker,
.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--notion-accent);
  background: var(--notion-accent-soft);
  border: 1px solid rgba(193, 154, 107, 0.22);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.blog-hero h1,
.article-title {
  margin: 0 0 14px;
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.12;
  letter-spacing: -0.04em;
  color: var(--notion-text);
}

.blog-hero p,
.article-lead {
  margin: 0;
  max-width: 760px;
  color: var(--notion-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.blog-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: start;
}

.blog-main,
.article-main {
  min-width: 0;
}

.blog-card,
.article-card,
.sidebar-card,
.amazon-ad-placeholder {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--notion-border);
  border-radius: 8px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
}

.blog-card {
  padding: 28px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.blog-card:hover {
  transform: translateY(-3px);
  border-color: rgba(193, 154, 107, 0.42);
  box-shadow: var(--notion-shadow);
}

.blog-card.empty-state {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.blog-card h2,
.sidebar-card h2,
.sidebar-card h3,
.amazon-ad-placeholder h2 {
  margin: 0 0 12px;
  color: var(--notion-text);
  letter-spacing: -0.02em;
}

.blog-card p,
.sidebar-card p,
.amazon-ad-placeholder p {
  margin: 0;
  color: var(--notion-muted);
  line-height: 1.8;
}

.article-card {
  padding: 34px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 28px;
  color: var(--notion-muted);
  font-size: 0.9rem;
}

.article-toc,
.article-content,
.article-banners {
  margin-top: 28px;
}

.article-content {
  color: var(--notion-text);
  line-height: 1.9;
  font-size: 1rem;
}

.article-content h2,
.article-content h3,
.article-content h4 {
  color: var(--notion-text);
  letter-spacing: -0.02em;
  margin: 2rem 0 0.9rem;
}

.article-content p {
  margin: 0 0 1.2rem;
}

.article-content a {
  color: #9a7047;
  text-underline-offset: 3px;
}

.blog-sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.amazon-ad-placeholder {
  padding: 20px;
  text-align: center;
  background: linear-gradient(135deg, rgba(193, 154, 107, 0.16), rgba(255, 255, 255, 0.96));
}

.ad-label {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--notion-accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.sidebar-card {
  padding: 20px;
}

.sidebar-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-card li + li {
  margin-top: 10px;
}

.sidebar-card a,
.breadcrumb a {
  color: #8c633f;
  text-decoration: none;
}

.sidebar-card a:hover,
.breadcrumb a:hover {
  text-decoration: underline;
}

.sidebar-note {
  border-top: 1px solid var(--notion-border);
  margin-top: 14px;
  padding-top: 14px;
}

.breadcrumb {
  max-width: 1180px;
  margin: 22px auto 0;
  padding: 0 20px;
  color: var(--notion-muted);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .blog-shell {
    padding: 32px 16px 56px;
  }

  .blog-hero,
  .article-card {
    padding: 24px;
  }

  .blog-layout {
    grid-template-columns: 1fr;
  }

  .blog-sidebar {
    order: -1;
  }
}