:root {
  --bg: #08090b;
  --bg-2: #0d0f12;
  --fg: #edeae4;
  --text: #c3c7c6;
  --dim: #7e858c;
  --line: rgba(237, 234, 228, 0.13);
  --line-strong: rgba(237, 234, 228, 0.25);
  --ember: #ff5a36;

  --display: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --body: Georgia, "Times New Roman", serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --pad: clamp(1.25rem, 4vw, 3rem);
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

::selection { background: var(--ember); color: var(--bg); }

a { color: var(--fg); text-decoration: none; border-bottom: 1px solid var(--line-strong); }
a:hover { border-color: var(--ember); }
a:focus-visible, button:focus-visible, input:focus-visible,
summary:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 3px;
}

.skip {
  position: fixed; left: -9999px; top: 1rem;
  background: var(--fg); color: var(--bg);
  padding: 0.5rem 0.9rem; z-index: 100;
  font-family: var(--display); font-weight: 700;
}
.skip:focus { left: 1rem; }

/* ---------- top bar ---------- */

.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: baseline; gap: 1.25rem;
  padding: 0.9rem var(--pad);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}
.brand {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.045em;
  border: 0;
}
.ver {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
  letter-spacing: 0;
}
.top nav { margin-left: auto; display: flex; align-items: baseline; gap: 1.1rem; }
.top nav a, .top nav button {
  font-family: var(--display);
  font-size: 0.82rem;
  letter-spacing: -0.01em;
  color: var(--text);
  border: 0;
  background: none;
  padding: 0;
  cursor: pointer;
}
.top nav a:hover, .top nav button:hover { color: var(--fg); }
kbd {
  font-family: var(--mono);
  font-size: 0.7rem;
  border: 1px solid var(--line-strong);
  padding: 0.05rem 0.3rem;
  margin-left: 0.3rem;
  color: var(--dim);
}

/* ---------- shell ---------- */

.shell {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr) 13rem;
  gap: 0 var(--pad);
  max-width: 84rem;
  margin: 0 auto;
  padding: 2.5rem var(--pad) 5rem;
}
@media (max-width: 68rem) { .shell { grid-template-columns: 14rem minmax(0, 1fr); } .toc { display: none; } }
@media (max-width: 34rem) {
  .top { gap: 0.8rem; }
  .top .ver, .top nav a[href*="pypi"] { display: none; }
  .top nav { gap: 0.9rem; }
}
@media (max-width: 52rem) {
  .shell { grid-template-columns: minmax(0, 1fr); padding-top: 1.5rem; }
  .side { position: static; order: -1; padding-bottom: 1rem; border-bottom: 1px solid var(--line); margin-bottom: 1.75rem; }
}

.side { position: sticky; top: 4.5rem; align-self: start; font-family: var(--display); font-size: 0.85rem; }
.side details { border: 0; }
.side summary { display: none; }
@media (max-width: 52rem) {
  .side summary { display: block; cursor: pointer; padding: 0.4rem 0; color: var(--text); }
  .side details:not([open]) .side-body { display: none; }
}
.side-body { display: block; }
.side h2 {
  font-family: var(--display);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 1.4rem 0 0.5rem;
}
.side h2:first-child { margin-top: 0; }
.side a {
  display: block;
  padding: 0.22rem 0 0.22rem 0.7rem;
  color: var(--text);
  border: 0;
  border-left: 1px solid var(--line);
  letter-spacing: -0.01em;
}
.side a:hover { color: var(--fg); border-left-color: var(--line-strong); }
.side a[aria-current="page"] { color: var(--fg); border-left: 2px solid var(--ember); padding-left: calc(0.7rem - 1px); }

main { min-width: 0; }
main > * { max-width: 46rem; }

/* ---------- prose ---------- */

h1, h2, h3, h4 {
  font-family: var(--display);
  letter-spacing: -0.045em;
  line-height: 1.15;
  margin: 0;
}
h1 { font-size: clamp(2.1rem, 5vw, 3rem); font-weight: 700; margin-bottom: 0.75rem; text-wrap: balance; }
h2 { font-size: 1.45rem; font-weight: 700; margin: 3rem 0 0.85rem; text-wrap: balance; }
h3 { font-size: 1.1rem; font-weight: 700; margin: 2rem 0 0.6rem; }
h2 a, h3 a { border: 0; }

.lead { font-size: 1.2rem; color: var(--text); margin: 0 0 2rem; max-width: 40rem; }
.kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
  letter-spacing: 0.02em;
  margin-bottom: 0.9rem;
}
p { margin: 0 0 1.05rem; color: var(--text); }
main strong { color: var(--fg); }
ul, ol { margin: 0 0 1.15rem; padding-left: 1.15rem; color: var(--text); }
li { margin-bottom: 0.35rem; }
li::marker { color: var(--dim); }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

code {
  font-family: var(--mono);
  font-size: 0.86em;
  color: var(--fg);
  background: rgba(237, 234, 228, 0.07);
  border: 0;
  padding: 0.1em 0.34em;
}

pre {
  position: relative;
  background: var(--bg-2);
  border: 1px solid var(--line);
  padding: 1.1rem 1.15rem;
  overflow-x: auto;
  margin: 0 0 1.3rem;
  line-height: 1.5;
}
pre code { background: none; border: 0; padding: 0; font-size: 0.83rem; color: var(--text); }
pre .tok-key { color: var(--fg); }
pre .tok-str { color: #b9c6a6; }
pre .tok-com { color: var(--dim); font-style: italic; }
pre .tok-num { color: var(--ember); }
.copy {
  position: absolute; top: 0.5rem; right: 0.5rem;
  font-family: var(--display); font-size: 0.68rem;
  letter-spacing: 0.02em;
  color: var(--dim); background: var(--bg-2);
  border: 1px solid var(--line); padding: 0.2rem 0.45rem;
  cursor: pointer; opacity: 0;
}
pre:hover .copy, .copy:focus-visible { opacity: 1; }
.copy:hover { color: var(--fg); border-color: var(--line-strong); }

/* callouts: a left rule that carries meaning, label in mono */
.note, .warn {
  border-left: 2px solid var(--line-strong);
  padding: 0.15rem 0 0.15rem 1rem;
  margin: 1.4rem 0;
  color: var(--text);
}
.warn { border-left-color: var(--ember); }
.note b, .warn b {
  display: block;
  font-family: var(--display); font-size: 0.72rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--dim); margin-bottom: 0.25rem;
}
.warn b { color: var(--ember); }

@media (max-width: 44rem) {
  table { display: block; overflow-x: auto; }
  th, td { white-space: nowrap; }
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.4rem;
  font-size: 0.95rem;
}
th, td { text-align: left; padding: 0.45rem 0.7rem 0.45rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--display); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--dim); font-weight: 700; }
td { color: var(--text); }
td.num, th.num { font-family: var(--mono); font-size: 0.84rem; white-space: nowrap; }
td strong { color: var(--fg); }

/* ---------- toc ---------- */

.toc { position: sticky; top: 4.5rem; align-self: start; font-family: var(--display); font-size: 0.78rem; }
.toc h2 {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--dim); margin: 0 0 0.6rem;
}
.toc a { display: block; color: var(--dim); border: 0; padding: 0.18rem 0; letter-spacing: -0.01em; }
.toc a:hover, .toc a.active { color: var(--fg); }

/* ---------- index extras ---------- */

.figures { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin: 1.75rem 0 2.25rem; }
.figures div { background: var(--bg); padding: 0.9rem 1rem; }
.figures span { display: block; font-family: var(--display); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--dim); margin-bottom: 0.25rem; }
.figures b { font-family: var(--mono); font-weight: 400; font-size: 1.35rem; color: var(--fg); letter-spacing: -0.02em; }
.figures i { display: block; font-style: normal; font-size: 0.82rem; color: var(--dim); }

.next { display: flex; justify-content: space-between; gap: 1rem; border-top: 1px solid var(--line); margin-top: 3.5rem; padding-top: 1rem; font-family: var(--display); font-size: 0.85rem; }
.next a { border: 0; }

/* ---------- search ---------- */

dialog.search {
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--fg);
  padding: 0;
  width: min(38rem, calc(100vw - 2rem));
  margin: 12vh auto auto;
}
dialog.search::backdrop { background: rgba(4, 4, 6, 0.75); }
dialog.search input {
  width: 100%;
  background: var(--bg-2);
  border: 0; border-bottom: 1px solid var(--line);
  color: var(--fg);
  font-family: var(--display); font-size: 1rem;
  padding: 0.9rem 1rem;
}
dialog.search input:focus { outline: none; }
dialog.search ul { list-style: none; margin: 0; padding: 0.4rem; max-height: 55vh; overflow: auto; }
dialog.search li { margin: 0; }
dialog.search a {
  display: block; padding: 0.5rem 0.7rem; border: 0;
  font-family: var(--display); font-size: 0.9rem; color: var(--text);
}
dialog.search a b { color: var(--fg); font-weight: 700; }
dialog.search a span { display: block; font-size: 0.78rem; color: var(--dim); }
dialog.search a:hover, dialog.search a.sel { background: var(--bg-2); }
.search-empty { padding: 0.9rem 1rem; color: var(--dim); font-family: var(--display); font-size: 0.85rem; }

footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem var(--pad) 3rem;
  display: flex; flex-wrap: wrap; gap: 1rem;
  font-family: var(--display); font-size: 0.8rem;
  color: var(--dim);
}
footer a { color: var(--text); border: 0; }
footer a:hover { color: var(--fg); }
footer .spacer { margin-left: auto; }