/* ==========================================
   Founder-Led Growth — Clean, Fast, GEO-Ready
   ========================================== */

:root {
  --color-bg: #fafaf9;
  --color-text: #1c1917;
  --color-text-light: #57534e;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: #e7e5e4;
  --color-card-bg: #ffffff;
  --color-tag-bg: #f1f5f9;
  --color-tag-text: #475569;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-heading: Georgia, 'Times New Roman', serif;
  --max-width: 720px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 17px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1.25rem 0;
}
.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.site-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}
.site-nav a {
  color: var(--color-text-light);
  text-decoration: none;
  margin-left: 1.5rem;
  font-size: 0.95rem;
}
.site-nav a:hover, .site-nav a.active {
  color: var(--color-accent);
}

/* Hero */
.hero {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--color-text-light);
  max-width: 600px;
}

/* Article Cards */
.articles-list h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}
.article-card {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}
.article-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  line-height: 1.35;
  margin-bottom: 0.4rem;
}
.article-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}
.article-card h3 a:hover {
  color: var(--color-accent);
}
.article-meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

/* Tags */
.tag {
  display: inline-block;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  font-size: 0.78rem;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  margin-right: 0.3rem;
}

/* Single Article */
.article-single { padding: 2rem 0 3rem; }
.article-header { margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--color-border); }
.article-header h1 {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}
.article-tags { margin-top: 0.75rem; }

/* Article Content */
.article-content h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  margin: 2rem 0 0.75rem;
}
.article-content h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.5rem;
}
.article-content p {
  margin-bottom: 1.25rem;
}
.article-content ul, .article-content ol {
  margin: 1rem 0 1.25rem 1.5rem;
}
.article-content li {
  margin-bottom: 0.4rem;
}
.article-content a {
  color: var(--color-accent);
  text-decoration: underline;
}
.article-content blockquote {
  border-left: 3px solid var(--color-accent);
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  background: var(--color-tag-bg);
  color: var(--color-text-light);
  font-style: italic;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
.article-content th, .article-content td {
  border: 1px solid var(--color-border);
  padding: 0.6rem 0.8rem;
  text-align: left;
}
.article-content th {
  background: var(--color-tag-bg);
  font-weight: 600;
}

/* Sources */
.sources {
  margin-top: 2.5rem;
  padding: 1.25rem;
  background: var(--color-tag-bg);
  border-radius: 6px;
}
.sources h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.sources ul { list-style: none; padding: 0; }
.sources li { margin-bottom: 0.3rem; font-size: 0.9rem; }
.sources a { color: var(--color-accent); }

/* Related Articles */
.related-articles {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}
.related-articles h3 { font-size: 1.1rem; margin-bottom: 0.75rem; }
.related-articles ul { list-style: none; padding: 0; }
.related-articles li { margin-bottom: 0.5rem; }
.related-articles a { color: var(--color-accent); text-decoration: none; }
.related-articles a:hover { text-decoration: underline; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  margin-top: 3rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* Responsive */
@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero h1 { font-size: 1.8rem; }
  .article-header h1 { font-size: 1.6rem; }
  .site-header .container { flex-direction: column; gap: 0.5rem; }
  .site-nav a { margin-left: 0; margin-right: 1rem; }
}

/* ===== Founders page ===== */
.founders-page .founders-intro {
  color: #555;
  max-width: 640px;
  margin: 0.5rem 0 2.5rem;
}
.founder-card {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid #e5e5e5;
  scroll-margin-top: 5rem;
}
.founder-card:last-of-type { border-bottom: none; }
.founder-photo { flex: 0 0 220px; }
.founder-photo img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  display: block;
}
.founder-bio h2 { margin-top: 0; margin-bottom: 0.25rem; }
.founder-role {
  color: #777;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0 0 1rem;
}
.author-link { text-decoration: none; }
.author-link:hover strong { text-decoration: underline; }
@media (max-width: 640px) {
  .founder-card { flex-direction: column; }
  .founder-photo { flex: none; max-width: 260px; }
}