/* ── RothHelper Blog — shares variables from ../styles.css ────────── */

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 16px;
  line-height: 1.6;
}

/* ── Header ───────────────────────────────────────────────────────── */
.blog-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.blog-header-inner {
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.blog-brand {
  color: var(--accent);
  text-decoration: none;
  font-size: 1.1rem;
  display: inline-flex;
  align-items: center;
}
.blog-brand strong { font-weight: 700; }
/* Blog-header logo — bigger and left-flush against the page edge. */
.blog-brand .brand-logo { height: 72px; }
.blog-nav { display: flex; gap: 18px; }
.blog-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}
.blog-nav a.active, .blog-nav a:hover { color: var(--accent); }

/* ── Main content ────────────────────────────────────────────────── */
.blog-main {
  max-width: 760px;
  margin: 0 auto;
  padding: 36px 20px 64px;
}

/* ── Blog index (landing) ────────────────────────────────────────── */
.blog-hero { margin-bottom: 36px; }
.blog-hero h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
}
.blog-hero-sub {
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0;
}

.blog-post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.blog-post-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 16px;
  transition: border-color 0.15s, transform 0.15s;
}
.blog-post-item:hover { border-color: var(--accent); }
.blog-post-link {
  display: block;
  padding: 20px 22px;
  text-decoration: none;
  color: inherit;
}
.blog-post-date {
  display: block;
  font-size: 0.75rem;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.blog-post-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
  line-height: 1.3;
}
.blog-post-excerpt {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 10px;
  line-height: 1.55;
}
.blog-post-readmore {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
}

.blog-footer-cta {
  margin-top: 36px;
  padding: 20px 22px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--muted);
}
.blog-footer-cta strong { color: var(--text); display: block; margin-bottom: 6px; }
.blog-footer-cta a { color: var(--accent); font-weight: 600; }

/* ── Blog article (single post) ──────────────────────────────────── */
.blog-back { margin-bottom: 18px; }
.blog-back a { color: var(--muted); text-decoration: none; font-size: 0.85rem; }
.blog-back a:hover { color: var(--accent); }

.blog-article-head { margin-bottom: 32px; }
.blog-article h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 10px;
  line-height: 1.25;
}
.blog-article-sub {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0 0 12px;
  line-height: 1.55;
}
.blog-article-meta {
  color: var(--dim);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0;
}

.blog-article h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 14px;
  text-transform: none;
  letter-spacing: 0;
}
.blog-article h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin: 24px 0 10px;
  text-transform: none;
  letter-spacing: 0;
}
.blog-article p {
  margin: 0 0 16px;
  color: var(--text);
}
.blog-article ul, .blog-article ol {
  margin: 0 0 16px;
  padding-left: 24px;
  color: var(--text);
}
.blog-article li { margin-bottom: 6px; }
.blog-article a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.blog-article a:hover { color: var(--text); }
.blog-article strong { color: var(--text); font-weight: 700; }
.blog-article em { color: var(--text); font-style: italic; }
.blog-article code {
  background: var(--surface2);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 0.88em;
}
.blog-formula {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 18px;
  margin: 0 0 18px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', monospace;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
}

.blog-post-cta {
  margin-top: 40px;
  padding: 24px 26px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
}
.blog-post-cta h3 {
  margin: 0 0 10px;
  color: var(--text);
}
.blog-post-cta p { margin-bottom: 10px; color: var(--muted); }
.blog-post-cta a { color: var(--accent); font-weight: 600; }

/* ── Footer ──────────────────────────────────────────────────────── */
.blog-footer {
  border-top: 1px solid var(--border);
  padding: 24px 20px 36px;
  text-align: center;
}
.blog-footer p { margin: 0 0 6px; font-size: 0.85rem; color: var(--muted); }
.blog-footer a { color: var(--accent); text-decoration: none; }
.blog-footer a:hover { text-decoration: underline; }
.blog-footer-note {
  font-size: 0.75rem !important;
  color: var(--dim) !important;
  margin-top: 8px !important;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}