/* EELisp — site styles. One stylesheet for every page; edit here, not in the pages.
   Accent and paper tone are the only things that differ from the EELisp site. */

:root {
  --bg: #fcfbf9;
  --bg-alt: #f4f2ee;
  --fg: #1b1a17;
  --muted: #6b675e;
  --line: #e3dfd7;
  --card: #ffffff;
  --accent: #1f6f5c;
  --accent-soft: #e8f2ef;
  --code-bg: #f6f4f0;
  --code-fg: #2a2823;
  --kbd-bg: #efece6;
  --shadow: 0 1px 2px rgba(27, 26, 23, .05), 0 8px 24px -12px rgba(27, 26, 23, .12);
  --radius: 10px;
  --measure: 68ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --bg-alt: #1b1a15;
    --fg: #ece8e0;
    --muted: #a09a8d;
    --line: #302d26;
    --card: #1b1a15;
    --accent: #5cc4a7;
    --accent-soft: #16241f;
    --code-bg: #1e1c17;
    --code-fg: #ddd8ce;
    --kbd-bg: #262319;
    --shadow: none;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.65 ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ── layout ─────────────────────────────────────────────────────────── */
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.prose { max-width: var(--measure); }
section { padding: 72px 0; border-top: 1px solid var(--line); }
section:first-of-type { border-top: 0; }
.alt { background: var(--bg-alt); }

/* ── nav ────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.6) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 20px; padding: 12px 24px; max-width: 1080px; margin: 0 auto; }
.brand { font-weight: 660; letter-spacing: -.02em; text-decoration: none; color: var(--fg); font-size: 1.05rem; }
.brand .lam { color: var(--accent); }
.nav-links { margin-left: auto; display: flex; gap: 20px; flex-wrap: wrap; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: .93rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--fg); }

/* ── type ───────────────────────────────────────────────────────────── */
h1, h2, h3, h4 { line-height: 1.2; letter-spacing: -.022em; margin: 0 0 .5em; font-weight: 660; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.3rem); }
h2 { font-size: clamp(1.5rem, 3.2vw, 2rem); margin-top: 0; }
h3 { font-size: 1.18rem; margin-top: 2.2em; }
h4 { font-size: 1rem; margin-top: 1.8em; }
p, ul, ol, table, pre, blockquote { margin: 0 0 1.1em; }
ul, ol { padding-left: 1.3em; }
li { margin: .3em 0; }
a { color: var(--accent); text-underline-offset: 2px; }
.lede { font-size: 1.2rem; color: var(--muted); max-width: 62ch; }
.eyebrow { text-transform: uppercase; letter-spacing: .09em; font-size: .76rem; font-weight: 640; color: var(--accent); margin-bottom: .8em; }
.muted { color: var(--muted); }
small { font-size: .87rem; }

/* ── hero ───────────────────────────────────────────────────────────── */
.hero { padding: 88px 0 64px; }
.hero h1 { margin-bottom: .3em; }
.hero .lede { font-size: 1.32rem; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; align-items: center; }

.btn {
  display: inline-block; padding: 11px 20px; border-radius: 8px;
  background: var(--accent); color: #fff; text-decoration: none;
  font-weight: 560; font-size: .97rem; border: 1px solid transparent;
}
.btn:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--fg); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--muted); filter: none; }

/* ── cards / grids ──────────────────────────────────────────────────── */
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; font-size: 1.05rem; }
.card p:last-child { margin-bottom: 0; }
.card .ico { font-size: 1.3rem; display: block; margin-bottom: .5em; color: var(--accent); }

/* ── code ───────────────────────────────────────────────────────────── */
code, kbd, pre, .mono { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; }
code { background: var(--code-bg); padding: .12em .38em; border-radius: 4px; font-size: .88em; }
pre {
  background: var(--code-bg); color: var(--code-fg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px; overflow-x: auto; font-size: .87rem; line-height: 1.55;
}
pre code { background: none; padding: 0; font-size: inherit; }
kbd {
  background: var(--kbd-bg); border: 1px solid var(--line); border-bottom-width: 2px;
  border-radius: 5px; padding: .1em .45em; font-size: .84em; white-space: nowrap;
}
.cm { color: var(--muted); }        /* comment  */
.st { color: #2f7d4f; }             /* string   */
.kw { color: var(--accent); }       /* keyword  */
@media (prefers-color-scheme: dark) { .st { color: #85c99b; } }

/* ── tables ─────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin: 0 0 1.4em; }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { text-align: left; padding: 9px 14px 9px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 620; color: var(--muted); font-size: .82rem; text-transform: uppercase; letter-spacing: .05em; }
td code { white-space: nowrap; }

/* ── misc ───────────────────────────────────────────────────────────── */
.note {
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 0 0 1.4em;
}
.note p:last-child { margin-bottom: 0; }
.pills { display: flex; gap: 8px; flex-wrap: wrap; list-style: none; padding: 0; }
.pills li { background: var(--code-bg); border: 1px solid var(--line); border-radius: 999px; padding: 3px 12px; font-size: .85rem; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5em 0; }

.toc { background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; }
.toc h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: .8em; }
.toc ul { columns: 2; column-gap: 32px; list-style: none; padding: 0; margin: 0; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }
@media (max-width: 640px) { .toc ul { columns: 1; } }

footer { border-top: 1px solid var(--line); padding: 40px 0 64px; color: var(--muted); font-size: .9rem; }
footer a { color: var(--muted); }
.foot-cols { display: flex; gap: 40px; flex-wrap: wrap; justify-content: space-between; }

/* anchored headings in long docs */
.doc h2 { scroll-margin-top: 76px; padding-top: .4em; }
.doc h3 { scroll-margin-top: 76px; }