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

/* --- Design System CSS Tokens --- */
:root {
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  /* Light Mode Colors (default) */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --accent: #4f46e5;       /* Indigo */
  --accent-gradient: linear-gradient(135deg, #4f46e5, #7c3aed);
  --border: #e2e8f0;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Dark Mode Colors */
    --bg-primary: #090d16;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent: #818cf8;     /* Light Indigo */
    --accent-gradient: linear-gradient(135deg, #818cf8, #a78bfa);
    --border: #1f2937;
  }
}

/* --- Base Elements --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.7;
  font-size: 1.05rem;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  opacity: 0.85;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 0.75em;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; margin-top: 1.5em; }
h3 { font-size: 1.4rem; margin-top: 1.25em; }

p {
  margin-bottom: 1.25em;
}

/* --- Layout --- */
.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Header / Navigation --- */
.site-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 30px 0;
  margin-bottom: 50px;
}

.site-branding {
  text-align: center;
  margin-bottom: 20px;
}

.site-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 5px;
}

.site-title a {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-description {
  font-family: var(--font-sans);
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: 25px;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
}

.site-nav a {
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
}

.site-nav a:hover,
.site-nav .active a {
  color: var(--accent);
  background-color: var(--bg-tertiary);
}

/* --- Main Content Area --- */
.main-content {
  min-height: 70vh;
  padding-bottom: 80px;
}

/* --- Posts List (Home) --- */
.posts-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.post-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.post-card-header {
  margin-bottom: 15px;
}

.post-card-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 5px;
}

.post-card-title {
  font-size: 1.8rem;
  margin-bottom: 0;
}

.post-card-title a {
  color: var(--text-primary);
}

.post-card:hover .post-card-title a {
  color: var(--accent);
}

.post-card-excerpt {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 20px;
}

.post-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.meta-badge {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: lowercase;
}

.category-badge {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.tag-badge {
  background-color: rgba(79, 70, 229, 0.08);
  color: var(--accent);
}

/* --- Single Post Detail --- */
.post-header {
  margin-bottom: 40px;
  text-align: center;
}

.post-title {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 15px;
  line-height: 1.15;
}

.post-meta {
  font-size: 0.95rem;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  gap: 15px;
}

.post-content {
  font-size: 1.1rem;
  line-height: 1.8;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin: 1.5em 0;
  box-shadow: var(--shadow-sm);
}

/* --- Figure & Captions --- */
.wp-caption, figure {
  margin: 2em 0;
  text-align: center;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 15px;
  border-radius: var(--radius);
}

.wp-caption img, figure img {
  margin: 0 0 10px 0 !important;
}

.wp-caption-text, figcaption {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
}

/* --- Blockquotes --- */
blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 20px;
  margin: 2em 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* --- Code & Syntax Highlighting --- */
pre, code {
  font-family: Menlo, Monaco, Consolas, monospace;
  font-size: 0.9rem;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

code {
  padding: 2px 6px;
}

pre {
  padding: 20px;
  overflow-x: auto;
  margin: 2em 0;
}

pre code {
  padding: 0;
  background-color: transparent;
  border-radius: 0;
}

/* --- Footer --- */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 80px;
}

.site-footer p {
  margin-bottom: 5px;
}