/* Dark mode theme for 3D Resources */
:root {
  --bg: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-subtle: #6e7681;
  --link: #58a6ff;
  --link-hover: #79c0ff;
  --border: #30363d;
  --accent: #388bfd;
  --code-bg: #161b22;
  --table-row-alt: #161b22;
  --bold: #f0f6fc;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Noto Sans, Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

.wrapper {
  max-width: 980px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* Header */
header {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

header .view a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.15s;
}

header .view a:hover { color: var(--link); }
header .view a svg { vertical-align: middle; }

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--bold);
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

h1 { font-size: 2rem; margin-top: 0; border-bottom: 1px solid var(--border); padding-bottom: 0.5rem; }
h2 { font-size: 1.5rem; border-bottom: 1px solid var(--border); padding-bottom: 0.4rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

p { margin: 0.75rem 0; }

strong, b { color: var(--bold); }

blockquote {
  margin: 1rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--bg-secondary);
  color: var(--text-muted);
  border-radius: 0 6px 6px 0;
}

blockquote p { margin: 0.25rem 0; }

/* Links */
a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.15s;
}

a:hover { color: var(--link-hover); text-decoration: underline; }

/* Horizontal rules */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* Lists */
ul, ol {
  padding-left: 1.5rem;
  margin: 0.5rem 0;
}

li { margin: 0.25rem 0; }
li > ul, li > ol { margin: 0; }

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.875rem;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

thead {
  background: var(--bg-tertiary);
}

th {
  text-align: left;
  font-weight: 600;
  color: var(--bold);
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
}

tr:nth-child(even) { background: var(--table-row-alt); }
tr:hover { background: var(--bg-tertiary); }

/* Code */
code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.85em;
  background: var(--bg-tertiary);
  padding: 0.15em 0.35em;
  border-radius: 4px;
  color: var(--text);
}

pre {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.5;
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
}

/* Footer */
footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-subtle);
  font-size: 0.8rem;
}

footer a { color: var(--text-muted); }
footer a:hover { color: var(--link); }

/* Table of Contents (Contents section) */
h2#contents + ul {
  columns: 2;
  column-gap: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
  .wrapper { padding: 1rem; }
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  h2#contents + ul { columns: 1; }
  table { font-size: 0.8rem; }
  th, td { padding: 0.4rem 0.5rem; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
}