:root {
  --ctp-latte-rosewater: #dc8a78;
  --ctp-latte-flamingo: #dd7878;
  --ctp-latte-pink: #ea76cb;
  --ctp-latte-mauve: #8839ef;
  --ctp-latte-red: #d20f39;
  --ctp-latte-maroon: #e64553;
  --ctp-latte-peach: #fe640b;
  --ctp-latte-yellow: #df8e1d;
  --ctp-latte-green: #40a02b;
  --ctp-latte-teal: #179299;
  --ctp-latte-sky: #04a5e5;
  --ctp-latte-sapphire: #209fb5;
  --ctp-latte-blue: #1e66f5;
  --ctp-latte-lavender: #7287fd;
  --ctp-latte-text: #4c4f69;
  --ctp-latte-subtext1: #5c5f77;
  --ctp-latte-subtext0: #6c6f85;
  --ctp-latte-overlay2: #7c7f93;
  --ctp-latte-overlay1: #8c8fa1;
  --ctp-latte-overlay0: #9ca0b0;
  --ctp-latte-surface2: #acb0be;
  --ctp-latte-surface1: #bcc0cc;
  --ctp-latte-surface0: #ccd0da;
  --ctp-latte-base: #eff1f5;
  --ctp-latte-mantle: #e6e9ef;
  --ctp-latte-crust: #dce0e8;

  --ctp-mocha-rosewater: #f5e0dc;
  --ctp-mocha-flamingo: #f2cdcd;
  --ctp-mocha-pink: #f5c2e7;
  --ctp-mocha-mauve: #cba6f7;
  --ctp-mocha-red: #f38ba8;
  --ctp-mocha-maroon: #eba0ac;
  --ctp-mocha-peach: #fab387;
  --ctp-mocha-yellow: #f9e2af;
  --ctp-mocha-green: #a6e3a1;
  --ctp-mocha-teal: #94e2d5;
  --ctp-mocha-sky: #89dceb;
  --ctp-mocha-sapphire: #74c7ec;
  --ctp-mocha-blue: #89b4fa;
  --ctp-mocha-lavender: #b4befe;
  --ctp-mocha-text: #cdd6f4;
  --ctp-mocha-subtext1: #bac2de;
  --ctp-mocha-subtext0: #a6adc8;
  --ctp-mocha-overlay2: #9399b2;
  --ctp-mocha-overlay1: #7f849c;
  --ctp-mocha-overlay0: #6c7086;
  --ctp-mocha-surface2: #585b70;
  --ctp-mocha-surface1: #45475a;
  --ctp-mocha-surface0: #313244;
  --ctp-mocha-base: #1e1e2e;
  --ctp-mocha-mantle: #181825;
  --ctp-mocha-crust: #11111b;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; }
}

/* 2) Base reset & typography */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Consolas', monospace;
  line-height: 1.7;
  transition: all 0.3s ease;
  background: linear-gradient(135deg, var(--ctp-latte-base) 0%, var(--ctp-latte-mantle) 100%);
  color: var(--ctp-latte-text);
  min-height: 100vh;
}

@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, var(--ctp-mocha-base) 0%, var(--ctp-mocha-mantle) 100%);
    color: var(--ctp-mocha-text);
  }
}

/* Headers use Inter */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 3) Header & navigation */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 2rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all 0.3s ease;
  background: rgba(239, 241, 245, 0.9);
  border-bottom: 1px solid rgba(76, 79, 105, 0.1);
}

@media (prefers-color-scheme: dark) {
  .header {
    background: rgba(30, 30, 46, 0.9);
    border-bottom: 1px solid rgba(205, 214, 244, 0.1);
  }
}

.header-content {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  /*background: linear-gradient(45deg, var(--ctp-latte-mauve), var(--ctp-latte-blue));*/
  background: var(--ctp-latte-lavender);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

@media (prefers-color-scheme: dark) {
  .logo {
    /*background: linear-gradient(45deg, var(--ctp-mocha-mauve), var(--ctp-mocha-blue));*/
    background: var(--ctp-mocha-lavender);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
}

/* Navigation (horizontal + mobile-friendly) */
.primary-nav {
  margin-left: auto;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1rem;
}

.nav-links a {
  text-decoration: none;
  color: inherit;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus {
  background-color: rgba(76, 79, 105, 0.08);
  outline: none;
}

@media (prefers-color-scheme: dark) {
  .nav-links a:hover,
  .nav-links a:focus {
    background-color: rgba(205, 214, 244, 0.08);
  }
}

/* Mobile toggle */
.nav-toggle { display: none; }

.nav-toggle-button {
  display: none; /* hidden on desktop */
  width: 42px;
  height: 42px;
  margin-left: auto;
  border-radius: 10px;
  position: relative;
  cursor: pointer;
}

/* Hamburger icon using a single bar with shadows */
.nav-toggle-button::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22px;
  height: 2px;
  background: currentColor;
  transform: translate(-50%, -50%);
  box-shadow: 0 -6px 0 0 currentColor, 0 6px 0 0 currentColor;
}

/* Small screens: collapse into hamburger */
@media (max-width: 640px) {
  .header-content {
    gap: 0.5rem;
  }

  .nav-toggle-button {
    display: inline-block;
  }

  /* Hide the nav by default on small screens */
  .primary-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(239, 241, 245, 0.98);
    border-bottom: 1px solid rgba(76, 79, 105, 0.1);
  }

  @media (prefers-color-scheme: dark) {
    .primary-nav {
      background: rgba(30, 30, 46, 0.98);
      border-bottom: 1px solid rgba(205, 214, 244, 0.1);
    }
  }

  .primary-nav .nav-links {
    flex-direction: column;
    padding: 0.5rem 1rem 1rem;
  }

  .primary-nav .nav-links a {
    padding: 0.75rem 0.5rem;
  }

  /* Show when toggled */
  #nav-toggle:checked ~ .primary-nav {
    display: block;
  }
}

/* 4) Layout */
.main-content {
  padding-top: 6rem;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
  padding-bottom: 4rem;
}

.full-width { margin: 2rem 0; }

/* 5) Article (post item page) */
.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 6rem 2rem 4rem;
}

.article-header { text-align: center; margin-bottom: 3rem; }

.article-tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: linear-gradient(45deg, var(--ctp-latte-mauve), var(--ctp-latte-blue));
  color: white;
}

@media (prefers-color-scheme: dark) {
  .article-tag {
    background: linear-gradient(45deg, var(--ctp-mocha-mauve), var(--ctp-mocha-blue));
    color: white;
  }
}

.article-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--ctp-latte-mauve), var(--ctp-latte-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (prefers-color-scheme: dark) {
  .article-title {
    background: linear-gradient(135deg, var(--ctp-mocha-mauve), var(--ctp-mocha-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-size: 0.95rem;
  opacity: 0.8;
  margin-bottom: 3rem;
}

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

.article-content h2 {
  font-size: 2rem;
  font-weight: 700;
  margin: 3rem 0 1.5rem;
  background: linear-gradient(45deg, var(--ctp-latte-mauve), var(--ctp-latte-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (prefers-color-scheme: dark) {
  .article-content h2 {
    background: linear-gradient(45deg, var(--ctp-mocha-mauve), var(--ctp-mocha-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
}

.article-content h3 { font-size: 1.5rem; font-weight: 600; margin: 2.5rem 0 1rem; color: var(--ctp-latte-mauve); }
@media (prefers-color-scheme: dark) { .article-content h3 { color: var(--ctp-mocha-mauve); } }

.article-content p { margin-bottom: 1.5rem; }

.article-content blockquote {
  border-left: 4px solid;
  padding: 1.5rem 2rem;
  margin: 2rem 0;
  border-radius: 0 15px 15px 0;
  font-style: italic;
  position: relative;
  border-color: var(--ctp-latte-mauve);
  background: rgba(136, 57, 239, 0.05);
}
@media (prefers-color-scheme: dark) {
  .article-content blockquote { border-color: var(--ctp-mocha-mauve); background: rgba(203, 166, 247, 0.05); }
}

.article-content code {
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Monaco', monospace;
  font-size: 0.85em;
  font-weight: 500;
  background: rgba(136, 57, 239, 0.1);
  color: var(--ctp-latte-mauve);
}
@media (prefers-color-scheme: dark) {
  .article-content code { background: rgba(203, 166, 247, 0.1); color: var(--ctp-mocha-mauve); }
}

.article-content pre {
  padding: 0.75rem 1rem;
  border-radius: 15px;
  overflow-x: auto;
  margin: 2rem 0;
  font-family: 'JetBrains Mono', 'Fira Code', 'Monaco', monospace;
  font-size: 0.9em;
  line-height: 1.2;
  border: 1px solid;
  background: rgba(136, 57, 239, 0.05) !important;
  border-color: var(--ctp-latte-surface0);
  box-shadow: 0 4px 12px rgba(76, 79, 105, 0.08);
}
.article-content pre code { background: none !important; padding: 0 !important; border-radius: 0 !important; }
@media (prefers-color-scheme: dark) {
  .article-content pre { background: rgba(203, 166, 247, 0.05) !important; border-color: var(--ctp-mocha-surface0); box-shadow: 0 4px 12px rgba(17, 17, 27, 0.3); }
}

.article-content ul, .article-content ol { margin: 1.5rem 0; padding-left: 2rem; }
.article-content li { margin-bottom: 0.5rem; }

.article-content strong { font-weight: 600; color: var(--ctp-latte-mauve); }
@media (prefers-color-scheme: dark) { .article-content strong { color: var(--ctp-mocha-mauve); } }

.article-content a { text-decoration: none; transition: all 0.3s ease; color: var(--ctp-latte-blue); }
@media (prefers-color-scheme: dark) { .article-content a { color: var(--ctp-mocha-blue); } }
.article-content a:hover { text-decoration: underline; }

.article-content hr {
  margin: 3rem 0; border: none; height: 1px;
  background: linear-gradient(90deg, transparent, var(--ctp-latte-overlay0), transparent);
}
@media (prefers-color-scheme: dark) {
  .article-content hr { background: linear-gradient(90deg, transparent, var(--ctp-mocha-overlay0), transparent); }
}

/* 5b) Shiki syntax highlighting (Catppuccin)
   These rules map Shiki's inline CSS variables to actual colors for light/dark.
   Shiki (fromHighlighter with defaultColor:false) emits --shiki-light/--shiki-dark and
   --shiki-light-bg/--shiki-dark-bg on the <pre class="shiki"> and token spans.
*/

/* Base colors for light mode */
.shiki { color: var(--shiki-light); background: var(--shiki-light-bg); }
.shiki span { color: var(--shiki-light); }

/* Prefer dark color scheme */
@media (prefers-color-scheme: dark) {
  .shiki { color: var(--shiki-dark); background: var(--shiki-dark-bg); }
  .shiki span { color: var(--shiki-dark); }
}

/* Structure and layout */
pre.shiki {
  padding: 0.75rem 1rem; /* align with article-content pre */
  border-radius: 15px;
  overflow-x: auto;
  margin: 2rem 0;
  border: 1px solid var(--ctp-latte-surface0);
  box-shadow: 0 4px 12px rgba(76, 79, 105, 0.08);
}
@media (prefers-color-scheme: dark) {
  pre.shiki { border-color: var(--ctp-mocha-surface0); box-shadow: 0 4px 12px rgba(17, 17, 27, 0.3); }
}

/* Ensure code inside shiki doesn't add its own background */
pre.shiki code { background: none !important; }

/* Ensure token spans inherit line-height and don't add extra spacing */
.article-content pre code span { line-height: inherit; }

/* Lines are block-level for proper wrapping and line numbers support */
.shiki code { line-height: 1.2; }
.shiki .line { display: inline-block; line-height: 1.2; }
.shiki .line > span { line-height: inherit; }

/* Do not override Shiki backgrounds with generic pre styles */
.article-content pre.shiki {
  background: var(--shiki-light-bg) !important;
  color: var(--shiki-light) !important;
}
@media (prefers-color-scheme: dark) {
  .article-content pre.shiki {
    background: var(--shiki-dark-bg) !important;
    color: var(--shiki-dark) !important;
  }
}

/* 6) Blog post list (posts index page) */
.blog-post-item {
  margin-bottom: 3rem;
  padding: 2rem;
  border-radius: 15px;
  border: 1px solid var(--ctp-latte-surface0);
  background: rgba(239, 241, 245, 0.5);
  transition: all 0.3s ease;
}
@media (prefers-color-scheme: dark) {
  .blog-post-item { border-color: var(--ctp-mocha-surface0); background: rgba(30, 30, 46, 0.5); }
}
.blog-post-item:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(76, 79, 105, 0.15); }
@media (prefers-color-scheme: dark) {
  .blog-post-item:hover { box-shadow: 0 8px 25px rgba(17, 17, 27, 0.4); }
}

.blog-post-item h2 { margin: 0 0 1rem 0; font-size: 1.5rem; }
.blog-post-item h2 a { color: var(--ctp-latte-text); text-decoration: none; }
@media (prefers-color-scheme: dark) { .blog-post-item h2 a { color: var(--ctp-mocha-text); } }
.blog-post-item h2 a:hover { color: var(--ctp-latte-mauve); }
@media (prefers-color-scheme: dark) { .blog-post-item h2 a:hover { color: var(--ctp-mocha-mauve); } }

.excerpt { color: var(--ctp-latte-subtext0); font-style: italic; margin-bottom: 1rem; }
@media (prefers-color-scheme: dark) { .excerpt { color: var(--ctp-mocha-subtext0); } }

.post-meta-top { display: flex; gap: 1rem; font-size: 0.9rem; color: var(--ctp-latte-subtext1); margin-bottom: 1rem; }
@media (prefers-color-scheme: dark) { .post-meta-top { color: var(--ctp-mocha-subtext1); } }

.post-footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--ctp-latte-surface0);
}
@media (prefers-color-scheme: dark) { .post-footer { border-color: var(--ctp-mocha-surface0); } }

.read-more { color: var(--ctp-latte-blue); text-decoration: none; font-weight: 500; font-size: 0.9rem; transition: all 0.3s ease; }
@media (prefers-color-scheme: dark) { .read-more { color: var(--ctp-mocha-blue); } }
.read-more:hover { color: var(--ctp-latte-mauve); text-decoration: underline; }
@media (prefers-color-scheme: dark) { .read-more:hover { color: var(--ctp-mocha-mauve); } }

.read-time-badge {
  background: var(--ctp-latte-surface0);
  color: var(--ctp-latte-subtext1);
  padding: 0.15rem 0.5rem;
  border-radius: 8px;
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.8;
}
@media (prefers-color-scheme: dark) { .read-time-badge { background: var(--ctp-mocha-surface0); color: var(--ctp-mocha-subtext1); } }

.no-bullet { list-style: none; padding: 0; }

/* 7) Generic page sections (About, Home, Posts Index) */
.page-container, .about-container { max-width: 800px; margin: 0 auto; padding: 8rem 2rem 4rem; }
.page-header, .about-header { text-align: center; margin-bottom: 4rem; }
.page-header h1, .about-header h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--ctp-latte-mauve), var(--ctp-latte-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
@media (prefers-color-scheme: dark) {
  .page-header h1, .about-header h1 {
    background: linear-gradient(135deg, var(--ctp-mocha-mauve), var(--ctp-mocha-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
}
.page-content, .about-content { font-size: 1.1rem; line-height: 1.8; }
.page-content p, .about-content p { margin-bottom: 2rem; }

/* CTA buttons and button styles (from sample) */
.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  padding: 0.875rem 2.5rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  font-size: 1.1rem;
  display: inline-block;
}

.btn-primary {
  background: linear-gradient(45deg, var(--ctp-latte-mauve), var(--ctp-latte-blue));
  color: white;
}
@media (prefers-color-scheme: dark) {
  .btn-primary { background: linear-gradient(45deg, var(--ctp-mocha-mauve), var(--ctp-mocha-blue)); }
}

.btn-secondary {
  background: transparent;
  border: 2px solid;
}
/* Light scheme colors for secondary */
@media (prefers-color-scheme: light) {
  .btn-secondary { border-color: var(--ctp-latte-mauve); color: var(--ctp-latte-mauve); }
}
/* Dark scheme colors for secondary */
@media (prefers-color-scheme: dark) {
  .btn-secondary { border-color: var(--ctp-mocha-mauve); color: var(--ctp-mocha-mauve); }
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* 8) Responsive */
@media (max-width: 768px) {
  .main-content { padding: 5rem 1rem 3rem; }
  .article-container { padding: 5rem 1rem 3rem; }
  /* Reduce top padding on generic pages to avoid excess whitespace under fixed header */
  .page-container, .about-container { padding: 3.5rem 1rem 3rem; }
  /* Slightly tighten header spacing on mobile */
  .page-header, .about-header { margin-bottom: 3rem; }

  .article-meta { flex-direction: column; gap: 0.3rem; }
  .article-content { font-size: 1rem; }
  .article-content h2 { font-size: 1.6rem; }
  .article-content h3 { font-size: 1.3rem; }
  .article-content pre { font-size: 0.8em; overflow-x: auto; margin: 1.5rem -0.5rem; }
  .post-meta-top { flex-direction: column; gap: 0.3rem; }
  .post-footer { flex-direction: column; gap: 1rem; align-items: flex-start; }
  /* Slightly tighter card padding on small screens */
  .blog-post-item { padding: 1.25rem; margin-bottom: 2rem; }
}

/* On touch devices, disable hover elevation to avoid jank */
@media (hover: none) {
  .blog-post-item:hover { transform: none; }
}

@media (prefers-color-scheme: light) {
  .img-dark { display: none; }
  .img-light { display: block; }
}
@media (prefers-color-scheme: dark) {
  .img-light { display: none; }
  .img-dark { display: block; }
}

/* Ensure images never exceed their container width in posts/pages */
.article-container img,
.article-content img,
.main-content img {
  max-width: 100%;
  height: auto;
}