/*
  Embedded Pandora — base.css
  Design tokens, reset, and typography for the whole site.
  Theme: light is default; dark applies when html[data-theme="dark"],
  or when no explicit theme is set and the OS prefers dark.
*/

:root {
  /* -- layout -- */
  --content-width: 46rem;
  --wide-width: 64rem;
  --radius: 6px;
  --gap: 1.25rem;

  /* -- fonts (system stacks only, no external requests) -- */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* -- light palette -- */
  --bg: #faf7f0;
  --bg-raised: #f1ecdf;
  --bg-inset: #efe9dc;
  --ink: #1f2420;
  --ink-soft: #4b5049;
  --ink-faint: #7c8077;
  --border: #ddd5c0;
  --accent: #b5502a;
  --accent-ink: #ffffff;
  --accent-soft: #f3dccb;
  --link: #8a4a1f;
  --link-visited: #6c4a8a;
  --teal: #2b6f76;
  --blue: #2f5fa8;
  --green: #3f7d4a;
  --violet: #6c4a8a;
  --code-bg: #efe9dc;
  --code-border: #ddd5c0;
  --shadow: 0 1px 2px rgba(31, 36, 32, 0.06), 0 4px 12px rgba(31, 36, 32, 0.05);
  --scrollbar: #cfc6ab;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #15181a;
    --bg-raised: #1d2124;
    --bg-inset: #1a1e20;
    --ink: #e7e3d8;
    --ink-soft: #b8b3a5;
    --ink-faint: #82806f;
    --border: #33372f;
    --accent: #e08a5c;
    --accent-ink: #15181a;
    --accent-soft: #3a2a1f;
    --link: #eaa06e;
    --link-visited: #c49bea;
    --teal: #6fc2c9;
    --blue: #7aa7e0;
    --green: #7cc290;
    --violet: #c49bea;
    --code-bg: #1a1e20;
    --code-border: #33372f;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.35);
    --scrollbar: #33372f;
  }
}

:root[data-theme="dark"] {
  --bg: #15181a;
  --bg-raised: #1d2124;
  --bg-inset: #1a1e20;
  --ink: #e7e3d8;
  --ink-soft: #b8b3a5;
  --ink-faint: #82806f;
  --border: #33372f;
  --accent: #e08a5c;
  --accent-ink: #15181a;
  --accent-soft: #3a2a1f;
  --link: #eaa06e;
  --link-visited: #c49bea;
  --teal: #6fc2c9;
  --blue: #7aa7e0;
  --green: #7cc290;
  --violet: #c49bea;
  --code-bg: #1a1e20;
  --code-border: #33372f;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.35);
  --scrollbar: #33372f;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light dark;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--accent-soft);
}

img, svg {
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  line-height: 1.25;
  color: var(--ink);
  margin: 2.2em 0 0.6em;
}

h1 { font-size: 2.1rem; margin-top: 0; }
h2 { font-size: 1.5rem; border-bottom: 1px solid var(--border); padding-bottom: 0.3em; }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.02rem; color: var(--ink-soft); }

p, ul, ol {
  margin: 0 0 1em;
}

ul, ol {
  padding-left: 1.4em;
}

li + li {
  margin-top: 0.3em;
}

a {
  color: var(--link);
  text-decoration-color: var(--border);
  text-underline-offset: 2px;
}

a:visited {
  color: var(--link-visited);
}

a:hover {
  text-decoration-color: currentColor;
}

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.55;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.86em;
}

blockquote {
  margin: 1.2em 0;
  padding: 0.2em 1em;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
  background: var(--bg-raised);
  border-radius: 0 var(--radius) var(--radius) 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.2em 0;
  font-size: 0.94rem;
}

caption {
  text-align: left;
  color: var(--ink-faint);
  font-size: 0.85rem;
  margin-bottom: 0.4em;
}

th, td {
  text-align: left;
  padding: 0.5em 0.7em;
  border: 1px solid var(--border);
  vertical-align: top;
}

th {
  background: var(--bg-raised);
  font-family: var(--font-sans);
  font-weight: 600;
}

tbody tr:nth-child(even) {
  background: color-mix(in srgb, var(--bg-raised) 45%, transparent);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

::-webkit-scrollbar {
  height: 10px;
  width: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar);
  border-radius: 6px;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}