/* Dark Blog Style with Toned-Down Synthwave */

:root {
  /* Base colors */
  --bg-primary: #1a1a1a;
  --bg-secondary: #0d1117;
  --text-primary: #e0e0e0;
  --text-secondary: #a8a8a8;

  /* Toned-down synthwave accents */
  --accent-cyan: #5ec9e0;
  --accent-magenta: #c77dbb;
  --accent-purple: #8a7db8;
  --accent-yellow: #f0c969;
  --link-color: #6eb5c9;
  --link-hover: #7edaf0;

  /* UI elements */
  --border-color: #2d2d2d;
  --code-bg: #0d1117;
  --inline-code-bg: #2d2d2d;

  /* Spacing */
  --content-width: 750px;
  --sidebar-width: 250px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  display: flex;
  max-width: calc(var(--content-width) + var(--sidebar-width) + 80px);
  margin: 0 auto;
  padding: 40px 20px;
  gap: 40px;
}

/* Sidebar TOC */
.sidebar {
  position: sticky;
  top: 40px;
  width: var(--sidebar-width);
  height: fit-content;
  flex-shrink: 0;
}

.table-of-contents {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
}

.table-of-contents h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table-of-contents ul {
  list-style: none;
}

.table-of-contents li {
  margin-bottom: 8px;
}

.table-of-contents li.toc-sub {
  margin-left: 16px;
  font-size: 16px;
}

.table-of-contents a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: block;
  padding: 4px 0;
}

.table-of-contents a:hover {
  color: var(--accent-cyan);
  padding-left: 8px;
}

.table-of-contents a.active {
  color: var(--accent-cyan);
  font-weight: 500;
}

/* Main content */
.article-content {
  flex: 1;
  max-width: var(--content-width);
  min-width: 0;
}

/* Typography */
h1 {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

/* Article tags */
.article-tags {
  text-align: right;
  padding-right: 20px;
  margin-top: 0;
  margin-bottom: 20px;
}

.article-tags .tag {
  display: inline-block;
  color: var(--accent-yellow);
  font-size: 12px;
  font-weight: 500;
  margin-left: 8px;
  text-shadow: 0 0 16px rgba(240, 201, 105, 0.5);
  transition: text-shadow 0.2s ease;
}

.article-tags .tag:hover {
  text-shadow: 0 0 24px rgba(240, 201, 105, 0.7);
}

/* Article byline (author and date) */
.article-byline {
  text-align: right;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 400;
  margin-top: 12px;
  margin-bottom: 32px;
  padding-right: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  opacity: 0.7;
  font-style: italic;
}

h2 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--accent-cyan);
  margin-top: 48px;
  margin-bottom: 20px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border-color);
  transition: text-shadow 0.3s ease;
}

h2:hover {
  text-shadow: 0 0 8px rgba(94, 201, 224, 0.2);
}

h3 {
  font-size: 24px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--accent-magenta);
  margin-top: 32px;
  margin-bottom: 16px;
}

h4 {
  font-size: 20px;
  font-weight: 600;
  color: var(--accent-purple);
  margin-top: 24px;
  margin-bottom: 12px;
}

p {
  margin-bottom: 20px;
  color: var(--text-primary);
}

/* Links */
a {
  color: var(--link-color);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--link-hover);
  border-bottom-color: var(--link-hover);
}

/* Lists */
ul, ol {
  margin-bottom: 20px;
  padding-left: 28px;
}

li {
  margin-bottom: 8px;
  color: var(--text-primary);
}

/* Code blocks */
code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
  font-size: 14px;
}

/* Inline code */
:not(pre) > code {
  background: var(--inline-code-bg);
  color: var(--accent-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

/* Code blocks */
pre {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 24px;
  overflow-x: auto;
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  background: var(--bg-secondary);
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background: var(--code-bg);
  color: var(--accent-cyan);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 14px;
  letter-spacing: 0.5px;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover {
  background: rgba(94, 201, 224, 0.05);
}

/* Images and figures */
.article-image {
  margin: 32px 0;
  text-align: center;
}

.article-image img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.image-placeholder {
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.placeholder-notice {
  background: var(--bg-secondary);
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  padding: 40px;
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.6;
}

figcaption {
  margin-top: 12px;
  font-size: 15px;
  color: var(--text-secondary);
  font-style: italic;
}

/* Blockquotes */
blockquote {
  border-left: 4px solid var(--accent-cyan);
  padding-left: 20px;
  margin: 24px 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* Horizontal rules */
hr {
  border: none;
  border-top: 2px solid var(--border-color);
  margin: 48px 0;
}

/* Strong/bold */
strong {
  color: var(--accent-cyan);
  font-weight: 600;
}

/* Emphasis/italic */
em {
  color: var(--accent-magenta);
}

/* Responsive design */
@media (max-width: 1100px) {
  .container {
    flex-direction: column;
  }

  .sidebar {
    position: static;
    width: 100%;
    max-width: var(--content-width);
    margin: 0 auto 40px;
  }

  .article-content {
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  .container {
    padding: 20px 16px;
  }

  h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 26px;
    margin-top: 32px;
  }

  h3 {
    font-size: 22px;
  }

  pre {
    padding: 16px;
    font-size: 14px;
  }

  .table-of-contents {
    padding: 16px;
  }

  .article-tags {
    padding-right: 10px;
    margin-top: 0;
    margin-bottom: 16px;
  }

  .article-tags .tag {
    font-size: 11px;
    margin-left: 6px;
  }

  .article-byline {
    padding-right: 10px;
  }
}

/* Print styles */
@media print {
  body {
    background: white;
    color: black;
  }

  .sidebar {
    display: none;
  }

  .article-content {
    max-width: 100%;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  pre {
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection */
::selection {
  background: rgba(94, 201, 224, 0.3);
  color: var(--text-primary);
}