/* Adaptive Theme - Switches between Modern Tech (light) and Dark Mode (dark) based on browser preference */

/* ==================== LIGHT MODE (Default & Light Preference) ==================== */
/* Modern Tech Blog Theme */

* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.75;
  color: #242424;
  margin: 0;
  padding: 0;
  background: #fafafa;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

body > header {
  background: #ffffff;
  color: #242424;
  padding: 1.5rem 0;
  margin-bottom: 2.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}

body > header h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

body > header h1 a {
  color: #242424;
  text-decoration: none;
}

body > header h1 a:hover {
  color: #2563eb;
}

body > header nav {
  margin-top: 0.75rem;
}

body > header nav a {
  color: #525252;
  text-decoration: none;
  margin-right: 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

body > header nav a:hover {
  color: #2563eb;
}

main {
  min-height: 70vh;
  margin-bottom: 4rem;
  background: #ffffff;
  padding: 3rem 3rem 4rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.blog-post {
  margin-bottom: 3rem;
}

.post-header h1 {
  margin-bottom: 1rem;
  color: #0f172a;
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
}

.post-meta {
  color: #64748b;
  font-size: 0.95rem;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.post-meta time {
  font-weight: 500;
}

.tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tag {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #ffffff;
  padding: 0.35rem 0.9rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  box-shadow: 0 2px 4px rgba(102, 126, 234, 0.2);
}

.post-body {
  font-size: 1.125rem;
  line-height: 1.85;
  color: #334155;
  font-weight: 400;
}

.post-body p {
  margin-bottom: 2rem;
}

.post-body h2,
.post-body h3,
.post-body h4 {
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  color: #0f172a;
  font-weight: 700;
  line-height: 1.3;
}

.post-body h2 {
  font-size: 2.25rem;
  letter-spacing: -0.03em;
}

.post-body h3 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
}

.post-body h4 {
  font-size: 1.4rem;
}

.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 2.5rem 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.post-body pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1.75rem;
  overflow-x: auto;
  border-radius: 10px;
  margin: 2.5rem 0;
  font-size: 0.95rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border: 1px solid #334155;
}

.post-body code {
  background: #f1f5f9;
  color: #dc2626;
  padding: 0.25rem 0.6rem;
  border-radius: 5px;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
  font-size: 0.9em;
  font-weight: 500;
}

.post-body pre code {
  background: none;
  color: #e2e8f0;
  padding: 0;
  border: none;
  font-weight: 400;
}

.post-body a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 500;
  border-bottom: 2px solid #93c5fd;
  transition: all 0.2s;
}

.post-body a:hover {
  color: #1d4ed8;
  border-bottom-color: #2563eb;
  background: #eff6ff;
}

.post-body blockquote {
  border-left: 4px solid #2563eb;
  padding: 1.25rem 1.75rem;
  margin: 2rem 0;
  background: #f8fafc;
  border-radius: 0 8px 8px 0;
  color: #475569;
  font-style: italic;
  font-size: 1.05rem;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

.post-body ul,
.post-body ol {
  margin-bottom: 2rem;
  padding-left: 1.75rem;
}

.post-body li {
  margin-bottom: 0.75rem;
}

.post-body strong {
  color: #0f172a;
  font-weight: 700;
}

.comments {
  margin-top: 5rem;
  padding-top: 3rem;
  border-top: 2px solid #e2e8f0;
}

.comments h2 {
  color: #0f172a;
  margin-bottom: 2rem;
  font-size: 2rem;
  font-weight: 700;
}

.comments-content {
  background: #f8fafc;
  padding: 2.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.comments-content h4 {
  color: #1e293b;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  font-size: 1.15rem;
  font-weight: 700;
}

.comments-content h4:first-child {
  margin-top: 0;
}

.comments-content p {
  color: #475569;
  line-height: 1.7;
}

.recent-posts {
  margin-top: 5rem;
  padding-top: 3rem;
  border-top: 2px solid #e2e8f0;
}

.recent-posts h2 {
  color: #0f172a;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.post-list {
  list-style: none;
  padding: 0;
}

.post-list li {
  margin-bottom: 1.25rem;
  padding: 1.5rem;
  background: #ffffff;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.post-list li:hover {
  border-color: #2563eb;
  box-shadow: 0 8px 16px rgba(37, 99, 235, 0.1);
  transform: translateY(-2px);
}

.post-list a {
  color: #0f172a;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  display: block;
}

.post-list a:hover {
  color: #2563eb;
}

.post-list .date {
  color: #64748b;
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: 0.5rem;
  display: block;
}

footer {
  background: #ffffff;
  color: #64748b;
  padding: 3rem 0;
  margin-top: 6rem;
  border-top: 1px solid #e2e8f0;
  text-align: center;
}

footer p {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 500;
}

/* ==================== DARK MODE (Dark Preference) ==================== */
@media (prefers-color-scheme: dark) {
  body {
    color: #e4e4e7;
    background: #0a0a0a;
    line-height: 1.7;
  }

  body > header {
    background: #18181b;
    color: #fafafa;
    border-bottom: 1px solid #27272a;
  }

  body > header h1 a {
    color: #fafafa;
  }

  body > header h1 a:hover {
    color: #60a5fa;
  }

  body > header nav a {
    color: #a1a1aa;
  }

  body > header nav a:hover {
    color: #60a5fa;
  }

  main {
    background: transparent;
    box-shadow: none;
  }

  .post-header h1 {
    color: #fafafa;
  }

  .post-meta {
    color: #71717a;
    border-bottom: 1px solid #27272a;
  }

  .tag {
    background: #27272a;
    color: #a1a1aa;
    border: 1px solid #3f3f46;
    box-shadow: none;
  }

  .post-body {
    color: #d4d4d8;
  }

  .post-body h2,
  .post-body h3,
  .post-body h4 {
    color: #fafafa;
  }

  .post-body h2 {
    border-bottom: 2px solid #27272a;
    padding-bottom: 0.5rem;
  }

  .post-body img {
    border: 1px solid #27272a;
  }

  .post-body pre {
    background: #18181b;
    border: 1px solid #27272a;
    box-shadow: inset 0 0 10px rgba(0, 255, 0, 0.1);
  }

  .post-body code {
    background: #18181b;
    color: #fbbf24;
    border: 1px solid #27272a;
  }

  .post-body pre code {
    background: none;
    color: #d4d4d8;
    border: none;
  }

  .post-body a {
    color: #60a5fa;
    border-bottom-color: transparent;
  }

  .post-body a:hover {
    color: #93c5fd;
    border-bottom-color: #60a5fa;
    background: rgba(96, 165, 250, 0.1);
  }

  .post-body blockquote {
    border-left-color: #60a5fa;
    background: #18181b;
    color: #a1a1aa;
    padding: 1rem 1.5rem;
    border-radius: 0 4px 4px 0;
  }

  .post-body strong {
    color: #fafafa;
  }

  .comments {
    border-top: 2px solid #27272a;
  }

  .comments h2 {
    color: #fafafa;
  }

  .comments-content {
    background: #18181b;
    border: 1px solid #27272a;
  }

  .comments-content h4 {
    color: #e4e4e7;
  }

  .comments-content p {
    color: #a1a1aa;
  }

  .recent-posts {
    border-top: 2px solid #27272a;
  }

  .recent-posts h2 {
    color: #fafafa;
  }

  .post-list li {
    background: #18181b;
    border: 1px solid #27272a;
  }

  .post-list li:hover {
    border-color: #60a5fa;
    background: #1c1c1f;
    box-shadow: 0 0 15px rgba(96, 165, 250, 0.2);
  }

  .post-list a {
    color: #fafafa;
  }

  .post-list a:hover {
    color: #60a5fa;
  }

  .post-list .date {
    color: #71717a;
  }

  footer {
    background: #18181b;
    color: #71717a;
    border-top: 1px solid #27272a;
  }

  /* Scrollbar styling for dark mode */
  ::-webkit-scrollbar {
    width: 12px;
    height: 12px;
  }

  ::-webkit-scrollbar-track {
    background: #18181b;
  }

  ::-webkit-scrollbar-thumb {
    background: #3f3f46;
    border-radius: 6px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #52525b;
  }

  /* Selection styling */
  ::selection {
    background: #60a5fa;
    color: #0a0a0a;
  }
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  body {
    font-size: 0.95rem;
  }
  
  body > header h1 {
    font-size: 1.3rem;
  }
  
  main {
    padding: 2rem 1.5rem 3rem;
    border-radius: 8px;
  }
  
  .post-header h1 {
    font-size: 2rem;
  }
  
  .post-body {
    font-size: 1rem;
  }
  
  .post-body h2 {
    font-size: 1.75rem;
  }
  
  .post-body h3 {
    font-size: 1.4rem;
  }
}