/* ============================================
   Felix AI Blog - Main Stylesheet
   Inspired by sheracaolity.ghost.io
   ============================================ */
/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-accent: #111111;
  --color-tag-bg: #f3f4f6;
  --color-tag-text: #374151;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1100px;
  --radius: 12px;
  --transition: 0.2s ease;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ---------- Container ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-accent);
  transition: opacity var(--transition);
}

.site-title:hover {
  opacity: 0.65;
}

.site-nav {
  display: flex;
  gap: 8px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted);
  padding: 6px 12px;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover {
  background: var(--color-tag-bg);
  color: var(--color-text);
}

/* ---------- Main ---------- */
.site-main {
  padding: 60px 0 80px;
}

/* ---------- Home Hero ---------- */
.home-hero {
  text-align: center;
  padding: 48px 0 56px;
}

.home-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.home-desc {
  font-size: 1.05rem;
  color: var(--color-muted);
  max-width: 480px;
  margin: 0 auto;
}

/* ---------- Post Grid ---------- */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}

/* ---------- Post Card ---------- */
.post-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition), transform var(--transition);
}

.post-card:hover {
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
  transform: translateY(-4px);
}

.post-card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.post-card-image {
  width: 100%;
  height: 200px;
  background-size: cover;
  background-position: center;
  background-color: var(--color-tag-bg);
}

.post-card-image--placeholder {
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
}

.post-card-body {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.post-card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-tag-text);
  background: var(--color-tag-bg);
  padding: 3px 8px;
  border-radius: 4px;
  width: fit-content;
}

.post-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--color-text);
}

.post-card-excerpt {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.6;
  flex: 1;
}

.post-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.post-card-meta time {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.post-card-readmore {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent);
  opacity: 0;
  transition: opacity var(--transition);
}

.post-card:hover .post-card-readmore {
  opacity: 1;
}

/* ---------- Post Page ---------- */
.post {
  max-width: 720px;
  margin: 0 auto;
}

.post-header {
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.post-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-tag-text);
  background: var(--color-tag-bg);
  padding: 3px 8px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.post-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 16px;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--color-muted);
}

.post-source {
  color: var(--color-muted);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition), border-color var(--transition);
}

.post-source:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

/* ---------- Post Content ---------- */
.post-content {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #2d2d2d;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 2.2em 0 0.8em;
  color: var(--color-text);
}

.post-content h2 {
  font-size: 1.5rem;
}

.post-content h3 {
  font-size: 1.2rem;
}

.post-content p {
  margin-bottom: 1.5em;
}

.post-content a {
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.post-content a:hover {
  border-color: transparent;
  box-shadow: 0 2px 0 0 var(--color-text);
}

.post-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 4px 0 4px 20px;
  margin: 2em 0;
  color: var(--color-muted);
  font-style: italic;
}

.post-content pre {
  background: #f8f8f8;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.5em 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

.post-content code {
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 0.85em;
  background: var(--color-tag-bg);
  padding: 2px 6px;
  border-radius: 4px;
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

.post-content ul, .post-content ol {
  padding-left: 1.5em;
  margin-bottom: 1.5em;
}

.post-content li {
  margin-bottom: 0.4em;
}

.post-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5em 0;
}

/* ---------- Post Footer ---------- */
.post-footer {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.back-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.back-link:hover {
  background: var(--color-tag-bg);
  color: var(--color-text);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.07);
}

/* ---------- Page ---------- */
.page {
  max-width: 720px;
  margin: 0 auto;
}

.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.page-content {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #2d2d2d;
}

.page-content p {
  margin-bottom: 1.4em;
}

.page-content a {
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.page-content a:hover {
  border-color: transparent;
  box-shadow: 0 2px 0 0 var(--color-text);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
}

.site-footer p {
  font-size: 0.875rem;
  color: var(--color-muted);
  text-align: center;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .site-header .container {
    height: 56px;
  }
  .site-main {
    padding: 40px 0 60px;
  }
  .home-hero {
    padding: 32px 0 40px;
  }
  .post-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .site-nav {
    gap: 2px;
  }
  .nav-link {
    padding: 6px 8px;
    font-size: 0.8rem;
  }
}

/*# sourceMappingURL=main.css.map */