/* ==============================================================
   0cap Blog — Modern SaaS / Tech Blog (Linear / Stripe vibe)
   Inspired by tasteskill.dev, impeccable.style v3
   Mobile-first, structurally distinct from Kolmn
   ============================================================== */

/* --- Google Fonts: Inter --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ===== MOBILE FIRST: Base styles for < 640px ===== */

/* --- Design Tokens --- */
:root {
  --color-bg: #FBF9F1;
  --color-bg-card: #FFFFFF;
  --color-bg-header: rgba(251, 249, 241, 0.92);
  --color-bg-footer: #000000;
  --color-text-primary: #15171A;
  --color-text-secondary: #62676D;
  --color-text-meta: #9CA3AF;
  --color-accent: #1C1917;
  --color-accent-hover: #44403C;
  --color-border: #E5E3D9;
  --color-border-light: #F0EFE5;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 9999px;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 6px 16px rgba(0,0,0,0.07);
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

:root { --ghost-accent-color: #15171A !important; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

.outer { padding: 0 16px; }
.inner { max-width: 1200px; margin: 0 auto; }

/* ===== HEADER ===== */
.gh-head {
  background: var(--color-bg-header);
  border-bottom: 1px solid var(--color-border-light);
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.gh-head-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}
.gh-head-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  text-decoration: none;
}
.gh-head-menu .nav {
  display: none; /* Hidden on mobile */
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 24px;
}
.gh-head-menu .nav li a {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}
.gh-head-menu .nav li a:hover { color: var(--color-text-primary); }
.gh-head-actions { display: flex; align-items: center; gap: 12px; }
.gh-head-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
}
.gh-head-link:hover { color: var(--color-text-primary); }
.gh-head-button {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  background: var(--color-accent);
  color: #FFFFFF !important;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-xl);
  text-decoration: none;
  transition: all var(--transition);
}
.gh-head-button:hover { background: var(--color-accent-hover); }
.gh-search { color: var(--color-text-secondary); }

/* ===== HERO (compact on mobile) ===== */
.site-header-content {
  background: var(--color-bg);
  padding: 48px 16px 36px;
  text-align: left; /* LEFT-aligned for SaaS vibe */
}
.site-header-cover { display: none !important; }
.site-header-inner { max-width: 680px; margin: 0; }
.site-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 8px;
}
.site-title::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--color-accent);
  margin-top: 16px;
  border-radius: 2px;
}
.site-description {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* ===== FEED: LIST layout (distinct from Kolmn's grid) ===== */
.site-main { background: var(--color-bg); padding: 24px 0; }
.post-feed { display: flex !important; flex-direction: column !important; gap: 20px !important; }

/* Flat list cards — no full-width featured */
.post-card {
  display: flex !important;
  flex-direction: column !important;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}
.post-card:hover {
  border-color: #D4D2C8;
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

/* Images as full-width banners (compact on mobile) */
.post-card-image-link { display: block; overflow: hidden; line-height: 0; }
.post-card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.post-card:hover .post-card-image { transform: scale(1.04); }

.post-card-content { padding: 20px; }
.post-card-content-link { text-decoration: none; color: inherit; display: block; }
.post-card-header { margin-bottom: 8px; }

.post-card-tags {
  display: flex;
  gap: 6px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.post-card-primary-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-meta);
}
.post-card-featured {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-accent);
}

/* Titles: bold, clean, small on mobile */
.post-card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin: 0;
  transition: color var(--transition);
}
.post-card:hover .post-card-title { color: var(--color-accent); }

.post-card-excerpt {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-top: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--color-text-meta);
}

/* ===== ARTICLE PAGE ===== */
.article { max-width: 720px; margin: 0 auto; padding: 0 16px; }
.article-header {
  padding: 28px 0 24px;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 24px;
}
.article-tag { margin-bottom: 12px; }
.article-tag a {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-meta);
  text-decoration: none;
}
.article-title {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}
.article-excerpt {
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text-secondary);
  margin: 0 0 20px;
}
.gh-content > h1:first-of-type { display: none; }
.gh-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-primary);
}
.gh-content h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 32px 0 12px;
}
.gh-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 10px;
}
.gh-content p { margin-bottom: 16px; }
.gh-content a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 2px; }
.gh-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 16px;
  margin: 20px 0;
  font-style: italic;
  color: var(--color-text-secondary);
}
.gh-content img { border-radius: var(--radius-md); margin: 20px 0; width: 100%; }
.gh-content ul, .gh-content ol { margin: 12px 0; padding-left: 20px; }
.gh-content li { margin-bottom: 6px; }

.article-byline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
}
.article-byline-content { display: flex; align-items: center; gap: 10px; }
.author-list { list-style: none; margin: 0; padding: 0; display: flex; }
.author-avatar {
  display: block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--color-bg);
}
.author-profile-image { width: 100%; height: 100%; object-fit: cover; }
.author-name { font-size: 13px; font-weight: 600; margin: 0; }
.byline-meta-content, .byline-meta-date, .byline-reading-time { font-size: 12px; color: var(--color-text-meta); }

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-bg-footer);
  color: rgba(255,255,255,0.6);
  padding: 20px 16px;
  text-align: center;
}
.site-footer .inner { display: flex; flex-direction: column; gap: 8px; text-align: center; }
.site-footer a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 12px; }
.site-footer a:hover { color: #FFFFFF; }
.copyright { font-size: 12px; }
.site-footer-nav .nav { display: flex; list-style: none; margin: 0; padding: 0; gap: 16px; justify-content: center; }
.gh-powered-by { font-size: 12px; }
.footer-cta { background: var(--color-bg); text-align: center; padding: 36px 16px; }
.footer-cta-title { font-size: 18px; font-weight: 700; margin: 0 0 16px; }
.footer-cta-button {
  display: inline-flex;
  align-items: center;
  background: var(--color-accent);
  color: #FFFFFF !important;
  padding: 12px 28px;
  border-radius: var(--radius-xl);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
}

/* ===== READ MORE ===== */
.read-more-wrap { padding: 32px 16px; }
.read-more { display: flex; flex-direction: column; gap: 16px; }

/* ===== TAG PAGE ===== */
.tag-header { text-align: left; padding: 32px 16px; }
.pagination { display: flex; justify-content: center; gap: 8px; padding: 28px 0; }

/* ===== TABLET: 640px+ ===== */
@media (min-width: 640px) {
  .outer { padding: 0 24px; }
  .gh-head { height: 64px; }
  .gh-head-inner { padding: 0 24px; }
  .gh-head-logo { font-size: 18px; }
  .gh-head-menu .nav { display: flex; }
  .gh-head-button { padding: 8px 20px; font-size: 14px; }
  .site-header-content { padding: 64px 24px 48px; }
  .site-title { font-size: 40px; }
  .post-card { display: flex !important; flex-direction: row !important; }
  .post-card-image-link { width: 280px; min-height: 100%; flex-shrink: 0; }
  .post-card-image { height: 100%; min-height: 180px; object-fit: cover; }
  .post-card-content { padding: 24px; flex: 1; }
  .post-card-title { font-size: 20px; }
  .article { padding: 0 24px; }
  .article-title { font-size: 36px; }
  .site-footer .inner { flex-direction: row; justify-content: space-between; text-align: left; }
  .footer-cta { padding: 48px 24px; }
  .read-more-wrap { padding: 40px 24px; }
  .read-more { display: grid !important; grid-template-columns: repeat(2, 1fr) !important; gap: 24px !important; }
}

/* ===== DESKTOP: 1024px+ ===== */
@media (min-width: 1024px) {
  .site-header-content { padding: 80px 24px 60px; }
  .site-title { font-size: 48px; }
  .post-card-image-link { width: 320px; }
  .post-card-title { font-size: 22px; }
  .article { padding: 0 24px; }
  .article-title { font-size: 42px; }
  .gh-content { font-size: 17px; }
  .read-more { display: grid !important; grid-template-columns: repeat(3, 1fr) !important; }
}

/* ===== WIDE: 1200px+ ===== */
@media (min-width: 1200px) {
  .post-card-image-link { width: 360px; }
}

/* ===== GHOST BURGER MENU (mobile nav toggle) ===== */
.gh-burger {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
}
@media (min-width: 640px) {
  .gh-burger { display: none; }
}