/* UnENVerse site: "Vault ledger" tokens. Calm, document-like, automatic dark theme. */
@font-face { font-family: "Syne"; font-weight: 600; font-display: swap; src: url("/assets/fonts/syne-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "Syne"; font-weight: 700; font-display: swap; src: url("/assets/fonts/syne-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 400; font-display: swap; src: url("/assets/fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 500; font-display: swap; src: url("/assets/fonts/jetbrains-mono-latin-500-normal.woff2") format("woff2"); }

:root {
  color-scheme: light dark;
  --bg: #fbfaf7;
  --surface: #ffffff;
  --ink: #1d1b16;
  --muted: #5e5a50;
  --line: #dcd8cc;
  --accent: #2f5d50;
  --accent-ink: #ffffff;
  --warn: #8a5a00;
  --code-bg: #f1eee6;
  --focus: #0b57d0;
  --font-head: "Syne", ui-sans-serif, system-ui, sans-serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --s: 8px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14130f;
    --surface: #1c1b16;
    --ink: #ece9df;
    --muted: #aaa597;
    --line: #36342b;
    --accent: #8fcab6;
    --accent-ink: #10201a;
    --warn: #e0b04a;
    --code-bg: #23211b;
    --focus: #8ab4f8;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 1rem/1.65 var(--font-body);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
.skip {
  position: absolute; left: 16px; top: -64px; background: var(--accent); color: var(--accent-ink);
  padding: 8px 16px; z-index: 10; border-radius: 4px;
}
.skip:focus { top: 8px; }

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 16px; }
@media (min-width: 640px) { .wrap { padding: 0 32px; } }

header.site { border-bottom: 1px solid var(--line); background: var(--bg); }
header.site .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding-top: 12px; padding-bottom: 12px; }
.brand { font: 700 1.25rem var(--font-head); color: var(--ink); text-decoration: none; margin-right: auto; }
nav.main { display: flex; flex-wrap: wrap; gap: 4px 20px; }
nav.main a { color: var(--ink); text-decoration: none; padding: 6px 2px; border-bottom: 2px solid transparent; }
nav.main a:hover, nav.main a[aria-current="page"] { border-bottom-color: var(--accent); }

main { padding-bottom: 64px; }
section { padding: 40px 0; }
@media (min-width: 640px) { section { padding: 64px 0; } }
@media (min-width: 1024px) { section { padding: 96px 0; } }
section + section { border-top: 1px solid var(--line); }

h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 16px; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 700; max-width: 22ch; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 600; }
p { margin: 0 0 16px; max-width: 68ch; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 60ch; }
.small { font-size: 0.9rem; color: var(--muted); }

.btn {
  display: inline-block; padding: 12px 20px; border-radius: 6px; font-weight: 600;
  text-decoration: none; border: 2px solid var(--accent); min-height: 44px;
}
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.secondary { color: var(--accent); background: transparent; }
.btn:hover { filter: brightness(1.08); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 16px; }

code, pre, kbd { font-family: var(--font-mono); font-size: 0.9em; }
code { background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 4px; }
pre {
  background: var(--code-bg); padding: 16px; border-radius: 8px; overflow-x: auto;
  border: 1px solid var(--line); line-height: 1.5; max-width: 100%;
}
pre code { background: none; padding: 0; }

.grid { display: grid; gap: 24px; }
@media (min-width: 640px) { .grid.two { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid.three { grid-template-columns: repeat(3, 1fr); } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 24px; }
.card h3 { margin-top: 0; }

figure { margin: 0; }
figure img { border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
figcaption { font-size: 0.9rem; color: var(--muted); margin-top: 8px; }

.limits { border-left: 4px solid var(--warn); padding: 8px 0 8px 20px; }
.limits li { margin-bottom: 8px; }
.tag { font: 500 0.75rem var(--font-mono); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; color: var(--muted); white-space: nowrap; }

table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; color: var(--muted); }
.scroll { overflow-x: auto; }
td.hash { font-family: var(--font-mono); font-size: 0.78rem; word-break: break-all; }

ol.steps { padding-left: 1.2em; }
ol.steps > li { margin-bottom: 28px; }

footer.site { border-top: 1px solid var(--line); padding: 40px 0; color: var(--muted); font-size: 0.95rem; }
footer.site ul { list-style: none; padding: 0; margin: 0 0 16px; display: flex; flex-wrap: wrap; gap: 8px 24px; }
footer.site a { color: var(--ink); }

@media (prefers-reduced-motion: no-preference) {
  .btn, nav.main a { transition: filter 150ms, border-color 150ms; }
}