/* Blog Styles — ClawdKnit Docs-Style Layout */
:root {
  --white: #FFFFFF;
  --off-white: #F8F7F5;
  --heading: #1A1A1A;
  --body: #4A4A4A;
  --navy: #1B2A4A;
  --gold: #C5A55A;
  --border: #E2E0DC;
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Source Sans 3', 'Source Sans Pro', sans-serif;
  --sidebar-width: 280px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--body);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--heading);
  font-weight: 700;
  line-height: 1.2;
}
a { color: var(--navy); text-decoration: none; transition: color 0.2s ease; }
a:hover { color: var(--gold); }

/* ── Top Nav ── */
.top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 60px;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
}
.top-nav-logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--heading);
}
.top-nav-back { font-size: 0.9rem; color: var(--body); }
.hamburger {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 28px; height: 20px;
  position: relative;
}
.hamburger span {
  display: block;
  width: 100%; height: 2px;
  background: var(--navy);
  position: absolute; left: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 9px; }
.hamburger span:nth-child(3) { top: 18px; }
.hamburger.active span:nth-child(1) { top: 9px; transform: rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { top: 9px; transform: rotate(-45deg); }

/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: 60px; left: 0; bottom: 0;
  width: var(--sidebar-width);
  background: var(--off-white);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 2rem 0;
  z-index: 90;
}
.sidebar-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #7A7A7A;
  padding: 0 1.5rem;
  margin-bottom: 0.6rem;
}
.sidebar-nav { list-style: none; }
.sidebar-nav li a {
  display: block;
  padding: 0.55rem 1.5rem;
  font-size: 0.92rem;
  color: var(--body);
  border-left: 3px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.sidebar-nav li a:hover {
  background: rgba(27, 42, 74, 0.04);
  color: var(--navy);
}
.sidebar-nav li a.active {
  border-left-color: var(--gold);
  color: var(--navy);
  font-weight: 600;
  background: rgba(197, 165, 90, 0.08);
}
.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: 1.2rem 1.5rem;
}

/* ── Main Content ── */
.main {
  margin-left: var(--sidebar-width);
  margin-top: 60px;
  min-height: calc(100vh - 60px);
  display: flex;
  flex-direction: column;
}

/* Blog Index */
.blog-header {
  padding: 3.5rem 3.5rem 1.5rem;
  max-width: 860px;
}
.blog-header h1 { font-size: 2.8rem; margin-bottom: 0.5rem; }
.blog-header p { font-size: 1.1rem; color: var(--body); }

.blog-list {
  padding: 0 3.5rem 4rem;
  max-width: 860px;
}
.blog-card {
  border-bottom: 1px solid var(--border);
  padding: 2.2rem 0;
}
.blog-card:last-child { border-bottom: none; }
.blog-card-date {
  font-size: 0.82rem;
  color: #7A7A7A;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
}
.blog-card h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.blog-card h2 a { color: var(--heading); }
.blog-card h2 a:hover { color: var(--gold); }
.blog-card p { font-size: 1.02rem; line-height: 1.7; color: var(--body); margin-bottom: 0.7rem; }
.blog-card-link { font-weight: 600; font-size: 0.92rem; color: var(--navy); }
.blog-card-link:hover { color: var(--gold); }

/* Article */
.article-header {
  padding: 3.5rem 3.5rem 0.5rem;
  max-width: 820px;
}
.article-header h1 { font-size: 2.4rem; margin-bottom: 0.7rem; line-height: 1.25; }
.article-meta { font-size: 0.88rem; color: #7A7A7A; }

.article-body {
  max-width: 720px;
  padding: 1.5rem 3.5rem 2rem;
  font-size: 1.06rem;
  line-height: 1.85;
  color: var(--body);
}
.article-body h2 { font-size: 1.6rem; margin: 2.5rem 0 0.8rem; }
.article-body h3 { font-size: 1.25rem; margin: 2rem 0 0.6rem; }
.article-body p { margin-bottom: 1.2rem; }
.article-body ul, .article-body ol { margin: 0 0 1.2rem 1.5rem; }
.article-body li { margin-bottom: 0.45rem; line-height: 1.8; }
.article-body strong { color: var(--heading); }
.article-body a { color: var(--navy); text-decoration: underline; }
.article-body a:hover { color: var(--gold); }

/* CTA */
.article-cta {
  max-width: 720px;
  margin: 1rem 3.5rem 3rem;
  padding: 2.5rem 2.5rem;
  background: var(--off-white);
  border-left: 4px solid var(--gold);
  text-align: center;
}
.article-cta h2 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.article-cta p { font-size: 1.02rem; color: var(--body); margin-bottom: 1.3rem; }
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 1rem; font-weight: 600;
  padding: 0.85rem 2rem;
  border: 2px solid var(--navy);
  background: var(--navy);
  color: var(--white);
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
}
.btn:hover { background: transparent; color: var(--navy); }
.cta-link { display: block; margin-top: 0.9rem; font-size: 0.92rem; }

/* Footer */
.blog-footer {
  text-align: center;
  padding: 2rem 2rem;
  font-size: 0.83rem;
  color: #7A7A7A;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

/* ── Mobile ── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 80;
}
.sidebar-overlay.visible { display: block; }

@media (max-width: 860px) {
  .hamburger { display: block; }
  .top-nav-back { display: none; }
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .blog-header, .blog-list, .article-header, .article-body, .article-cta {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
  .blog-header h1 { font-size: 2.2rem; }
  .article-header h1 { font-size: 1.9rem; }
  .article-body { font-size: 1rem; }
  .article-cta { margin-left: 1.5rem; margin-right: 1.5rem; }
}