/* Debussy Labs: shared styles. Palette from the Debussy logo: indigo, moonlight gold, cream, night. */
:root {
  --bg: #f4f1e8; --surface: #fcfbf7; --surface-2: #ece7da; --ink: #17153a; --ink-2: #3f3d66; --muted: #5f5d80;
  --line: #ddd7c7; --accent: #4536c9; --accent-hover: #3a2db0; --on-accent: #ffffff; --moon: #f2d27a;
  --s1: #4536c9; --s2: #b47e14; --grid: #e6e1d4; --code-bg: #17153a; --code-ink: #f4f1e8;
  --shadow: 0 1px 2px rgba(23, 21, 58, .06), 0 8px 24px rgba(23, 21, 58, .06);
  --serif: "Fraunces", "Iowan Old Style", Georgia, serif; --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12102e; --surface: #1c1a42; --surface-2: #24215a; --ink: #f4f1e8; --ink-2: #d6d2ec; --muted: #aaa6cc;
    --line: #322f66; --accent: #8076ec; --accent-hover: #958cf2; --on-accent: #12102e; --moon: #f2d27a;
    --s1: #8076ec; --s2: #b88c22; --grid: #2c2960; --code-bg: #0c0a24; --code-ink: #f4f1e8;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #12102e; --surface: #1c1a42; --surface-2: #24215a; --ink: #f4f1e8; --ink-2: #d6d2ec; --muted: #aaa6cc;
  --line: #322f66; --accent: #8076ec; --accent-hover: #958cf2; --on-accent: #12102e; --moon: #f2d27a;
  --s1: #8076ec; --s2: #b88c22; --grid: #2c2960; --code-bg: #0c0a24; --code-ink: #f4f1e8;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25); color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 var(--sans); }
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } body { font-size: 16px; } }

/* nav */
.nav { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px); -webkit-backdrop-filter: saturate(140%) blur(10px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 600 19px/1 var(--serif); letter-spacing: -.01em; }
.brand svg { width: 30px; height: 30px; color: var(--accent); }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 15px; }
.nav-links a { text-decoration: none; color: var(--ink-2); }
.nav-links a:hover { color: var(--ink); }
.theme-btn { border: 1px solid var(--line); background: transparent; color: var(--ink-2); width: 36px; height: 36px; border-radius: 999px; cursor: pointer; display: grid; place-items: center; }
.theme-btn:hover { color: var(--ink); border-color: var(--ink-2); }
@media (max-width: 760px) { .nav-links { display: none; } .nav .wrap { gap: 12px; } .theme-btn { margin-left: auto; } }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 20px; border-radius: 999px; font: 600 15px/1 var(--sans);
  text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: background .15s, border-color .15s; }
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink-2); }
.btn-small { padding: 9px 16px; font-size: 14px; }

/* type */
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 600 13px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--moon); box-shadow: 0 0 0 3px color-mix(in srgb, var(--moon) 30%, transparent); }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; letter-spacing: -.02em; line-height: 1.08; margin: 0; }
h1 { font-size: clamp(44px, 7vw, 84px); }
h2 { font-size: clamp(32px, 4.4vw, 48px); }
h3 { font-size: 23px; letter-spacing: -.01em; line-height: 1.2; }
.lede { font-size: clamp(18px, 2vw, 21px); color: var(--ink-2); max-width: 640px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
section { padding: 96px 0; }
@media (max-width: 600px) { section { padding: 64px 0; } }
.section-head { display: grid; gap: 14px; max-width: 760px; margin-bottom: 44px; }
.rule { border: 0; border-top: 1px solid var(--line); margin: 0; }

/* hero */
.hero { padding: 88px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; gap: 44px; } }
.hero h1 { margin: 18px 0 22px; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 22px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 14px; color: var(--muted); padding: 0; margin: 0; list-style: none; }
.chips li::before { content: "◆"; color: var(--moon); margin-right: 8px; font-size: 10px; vertical-align: 2px; }

/* decision card (hero visual) */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--shadow); }
.decision { padding: 22px; position: relative; overflow: hidden; }
.decision::before { content: ""; position: absolute; width: 260px; height: 260px; right: -110px; top: -130px; border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--moon) 45%, transparent), transparent 70%); pointer-events: none; }
.decision .tag { font: 600 12px/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.msg { margin: 14px 0 0; padding: 12px 14px; border-radius: 12px; background: var(--surface-2); font-size: 15px; line-height: 1.45; }
.msg b { display: block; font: 600 11px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.probs { margin-top: 18px; display: grid; gap: 12px; }
.prob { display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; align-items: center; font-size: 14px; }
.prob .val { font: 600 14px/1 var(--mono); }
.prob .track { grid-column: 1 / -1; height: 8px; border-radius: 0 4px 4px 0; background: var(--grid); overflow: hidden; }
.prob .fill { height: 100%; background: var(--s1); border-radius: 0 4px 4px 0; }
.decision .foot { margin-top: 16px; font-size: 12.5px; color: var(--muted); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat { padding: 28px 24px 26px; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; padding-left: 0; }
.stat .num { font: 500 clamp(34px, 4vw, 46px)/1 var(--serif); letter-spacing: -.02em; }
.stat .lbl { margin-top: 10px; font-size: 14.5px; color: var(--ink-2); }
@media (max-width: 860px) { .stats { grid-template-columns: 1fr 1fr; } .stat:nth-child(3) { border-left: 0; padding-left: 0; } .stat:nth-child(n+3) { border-top: 1px solid var(--line); } }
@media (max-width: 420px) { .stat { padding: 22px 12px 20px; } .stat:nth-child(even) { padding-right: 0; } }

/* feature cards */
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 900px) { .grid3 { grid-template-columns: 1fr; } }
.feature { padding: 28px; display: flex; flex-direction: column; gap: 12px; }
.feature .icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--accent); }
.feature p { margin: 0; color: var(--ink-2); }
.feature code { margin-top: auto; padding-top: 10px; font: 13px/1.5 var(--mono); color: var(--muted); word-break: break-word; }

/* chart */
.chart-card { padding: 28px; }
.chart-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 14px; margin-bottom: 22px; }
.legend { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; color: var(--ink-2); padding: 0; margin: 0; list-style: none; }
.legend li { display: flex; align-items: center; gap: 8px; }
.swatch { width: 14px; height: 10px; border-radius: 0 3px 3px 0; }
.toggle { font: 500 14px/1 var(--sans); color: var(--ink-2); background: transparent; border: 1px solid var(--line); border-radius: 999px; padding: 8px 14px; cursor: pointer; }
.toggle:hover { border-color: var(--ink-2); color: var(--ink); }
.bars { position: relative; display: grid; gap: 26px; }
.row { display: grid; grid-template-columns: 210px 1fr; gap: 18px; align-items: center; }
@media (max-width: 640px) { .row { grid-template-columns: 1fr; gap: 8px; } }
.row .name { font-weight: 600; font-size: 15px; line-height: 1.3; }
.row .name span { display: block; font-weight: 400; font-size: 13px; color: var(--muted); }
.plot { position: relative; display: grid; gap: 2px; padding-right: 52px; }
.plot .gridlines { position: absolute; inset: -6px 52px -6px 0; pointer-events: none;
  background-image: linear-gradient(to right, var(--grid) 1px, transparent 1px); background-size: 25% 100%; border-right: 1px solid var(--grid); }
.bar-hit { position: relative; z-index: 1; height: 22px; display: flex; align-items: center; cursor: default; outline: none; }
.bar { height: 16px; border-radius: 0 4px 4px 0; transition: filter .12s; }
.bar-hit:hover .bar, .bar-hit:focus-visible .bar { filter: brightness(1.12) saturate(1.05); }
.bar-hit:focus-visible { box-shadow: 0 0 0 2px var(--accent); border-radius: 4px; }
.bar-val { position: absolute; font: 600 13px/1 var(--mono); color: var(--ink); white-space: nowrap; margin-left: 5px; padding: 2px 3px; background: var(--surface); border-radius: 3px; }
.plot.has-chance { margin-top: 16px; }
.chance-layer { position: absolute; inset: -8px 52px -8px 0; pointer-events: none; z-index: 0; }
.chance { position: absolute; top: 0; bottom: 0; width: 0; border-left: 1px solid var(--muted); }
.chance span { position: absolute; top: -12px; left: 6px; font-size: 11px; line-height: 1; color: var(--muted); white-space: nowrap; }
.axis { display: grid; grid-template-columns: 210px 1fr; gap: 18px; margin-top: 14px; font: 12px/1 var(--mono); color: var(--muted); }
.axis .ticks { position: relative; height: 14px; margin-right: 52px; }
.axis .ticks span { position: absolute; transform: translateX(-50%); }
@media (max-width: 640px) { .axis { grid-template-columns: 1fr; } .axis > div:first-child { display: none; } }
.tooltip { position: fixed; z-index: 20; pointer-events: none; background: var(--surface); color: var(--ink); border: 1px solid var(--line);
  border-radius: 10px; box-shadow: var(--shadow); padding: 10px 12px; font-size: 13px; min-width: 180px; opacity: 0; transition: opacity .1s; }
.tooltip.on { opacity: 1; }
.tooltip .tv { font: 600 18px/1.1 var(--mono); }
.tooltip .ts { display: flex; align-items: center; gap: 8px; margin-top: 4px; color: var(--ink-2); }
.tooltip .key { width: 14px; height: 2px; border-radius: 2px; }
.tooltip .tn { margin-top: 6px; color: var(--muted); font-size: 12px; }
table.data { width: 100%; border-collapse: collapse; font-size: 15px; }
table.data th, table.data td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.data th { font-weight: 600; color: var(--ink-2); font-size: 13.5px; }
table.data td.num { font-family: var(--mono); white-space: nowrap; }
.table-scroll { overflow-x: auto; }
.notes { margin: 22px 0 0; padding-left: 18px; color: var(--muted); font-size: 14px; display: grid; gap: 6px; }

/* family */
.family { padding: 28px; display: flex; flex-direction: column; gap: 14px; position: relative; }
.family.rec { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow); }
.badge { position: absolute; top: 18px; right: 18px; font: 600 11.5px/1 var(--sans); letter-spacing: .06em; text-transform: uppercase;
  background: var(--accent); color: var(--on-accent); padding: 6px 10px; border-radius: 999px; }
.family .idx { font: 500 40px/1 var(--serif); letter-spacing: -.02em; }
.family .idx small { font: 400 14px/1.3 var(--sans); color: var(--muted); display: block; margin-top: 6px; letter-spacing: 0; }
.family dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 0; font-size: 14.5px; }
.family dt { color: var(--muted); }
.family dd { margin: 0; }
.family code { font: 12.5px/1.5 var(--mono); color: var(--ink-2); word-break: break-word; }

/* steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 36px; counter-reset: s; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; gap: 28px; } }
.step { border-top: 1px solid var(--line); padding-top: 22px; }
.step::before { counter-increment: s; content: "0" counter(s); font: 500 15px/1 var(--mono); color: var(--accent); display: block; margin-bottom: 14px; }
.step p { color: var(--ink-2); margin: 10px 0 0; }

/* honesty */
.night { background: #17153a; color: #f4f1e8; }
.night .muted, .night .lede { color: #c9c5e6; }
.night .eyebrow { color: #c9c5e6; }
.night .rule, .night .ledger li { border-color: #322f66; }
.ledger { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; }
@media (max-width: 860px) { .ledger { grid-template-columns: 1fr; } }
.ledger li { border-top: 1px solid #322f66; padding: 20px 0; }
.ledger b { display: block; font: 500 20px/1.3 var(--serif); margin-bottom: 6px; color: #f4f1e8; }
.ledger span { color: #c9c5e6; font-size: 15.5px; }
.moonline { display: flex; align-items: center; gap: 10px; color: var(--moon); }

/* code */
.code { position: relative; background: var(--code-bg); color: var(--code-ink); border-radius: 16px; padding: 22px; font: 13px/1.7 var(--mono); overflow-x: auto; min-width: 0; }
.code pre { margin: 0; white-space: pre; }
.code .c { color: #9c98c4; }
.copy { position: absolute; top: 12px; right: 12px; font: 600 12px/1 var(--sans); color: #f4f1e8; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.18); border-radius: 999px; padding: 7px 12px; cursor: pointer; }
.copy:hover { background: rgba(255,255,255,.16); }
.split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 28px; } }

/* news */
.news-list { display: grid; gap: 0; }
.news-item { display: grid; grid-template-columns: 160px 1fr auto; gap: 24px; align-items: baseline; padding: 24px 0; border-top: 1px solid var(--line); text-decoration: none; }
.news-item:last-child { border-bottom: 1px solid var(--line); }
.news-item:hover h3 { color: var(--accent); }
.news-item .date { font-size: 14px; color: var(--muted); }
.news-item p { margin: 6px 0 0; color: var(--ink-2); }
.news-item .arrow { color: var(--muted); }
@media (max-width: 700px) { .news-item { grid-template-columns: 1fr; gap: 6px; } .news-item .arrow { display: none; } }

/* article */
.article { max-width: 720px; margin: 0 auto; padding: 72px 0 40px; }
.article h1 { font-size: clamp(40px, 6vw, 64px); margin: 16px 0 18px; }
.article .meta { color: var(--muted); font-size: 15px; display: flex; flex-wrap: wrap; gap: 6px 14px; }
.article h2 { font-size: clamp(26px, 3.4vw, 34px); margin: 52px 0 14px; }
.article p, .article li { color: var(--ink-2); font-size: 18px; line-height: 1.7; }
.article li { margin: 6px 0; }
.article strong { color: var(--ink); }
.article figure { margin: 36px 0; }
.article figcaption { margin-top: 10px; font-size: 14px; color: var(--muted); }
.article .callout { border-left: 3px solid var(--moon); padding: 4px 0 4px 18px; margin: 28px 0; }
.article .table-scroll { margin: 24px 0; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 48px 0 56px; font-size: 14.5px; color: var(--muted); }
footer .cols { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 28px; }
footer nav { display: flex; flex-wrap: wrap; gap: 18px; }
footer a { text-decoration: none; color: var(--ink-2); }
footer a:hover { color: var(--ink); }
footer .credit { margin-top: 24px; max-width: 760px; }

/* account pages: sign in, dashboard */
.narrow { max-width: 760px; margin: 0 auto; }
.auth { min-height: calc(100vh - 64px - 200px); display: grid; place-items: center; padding: 72px 0; }
.auth-card { width: 100%; max-width: 440px; padding: 36px 32px; text-align: center; }
.auth-card svg.mark { width: 52px; height: 52px; color: var(--accent); margin: 0 auto 14px; }
.auth-card h1 { font-size: 34px; margin-bottom: 10px; }
.auth-card p { color: var(--ink-2); margin: 0 0 22px; }
.btn-github { width: 100%; justify-content: center; background: var(--ink); color: var(--bg); padding: 14px 20px; }
.btn-github:hover { background: var(--ink-2); }
.fine { font-size: 13.5px; color: var(--muted); margin-top: 18px !important; line-height: 1.5; }
.notice { border: 1px solid var(--line); border-left: 3px solid var(--moon); background: var(--surface); border-radius: 10px; padding: 12px 14px; text-align: left; font-size: 14.5px; color: var(--ink-2); margin-bottom: 18px; }
.notice.error { border-left-color: #c2410c; }
.panel { padding: 28px; margin-bottom: 22px; }
.panel h2 { font-size: 26px; margin-bottom: 8px; }
.panel > p { color: var(--ink-2); margin: 0 0 18px; }
.row-between { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 14px; }
.who { display: flex; align-items: center; gap: 12px; }
.who .avatar { width: 40px; height: 40px; border-radius: 50%; background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); display: grid; place-items: center; font: 600 16px/1 var(--sans); }
.pill { display: inline-block; font: 600 12px/1 var(--sans); padding: 6px 10px; border-radius: 999px; letter-spacing: .03em; }
.pill.ok { background: color-mix(in srgb, #15803d 14%, transparent); color: var(--ink); }
.pill.wait { background: color-mix(in srgb, var(--moon) 40%, transparent); color: var(--ink); }
.pill.off { background: var(--surface-2); color: var(--muted); }
.form-inline { display: flex; flex-wrap: wrap; gap: 10px; }
.input { flex: 1 1 220px; min-width: 0; font: 15px/1.2 var(--sans); color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 12px 16px; }
.input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.newkey { margin-top: 18px; border: 1px solid var(--accent); border-radius: 14px; padding: 16px; background: color-mix(in srgb, var(--accent) 6%, var(--surface)); }
.newkey .k { display: flex; gap: 10px; align-items: center; margin: 10px 0 8px; }
.newkey code { flex: 1; min-width: 0; overflow-x: auto; white-space: nowrap; font: 14px/1.4 var(--mono); background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; }
.btn-danger { color: #b42318; border-color: color-mix(in srgb, #b42318 40%, var(--line)); background: transparent; }
.btn-danger:hover { border-color: #b42318; }
:root[data-theme="dark"] .btn-danger { color: #fca5a5; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn-danger { color: #fca5a5; } }
.linkbtn { background: none; border: 0; padding: 0; font: inherit; color: var(--accent); cursor: pointer; text-decoration: underline; }
.empty { color: var(--muted); font-size: 15px; padding: 14px 0 4px; }
.code.small-code { font-size: 13px; }

/* docs */
.docs h2 { font-size: clamp(26px, 3.4vw, 34px); margin: 52px 0 12px; }
.docs h3 { margin: 30px 0 10px; font-size: 21px; }
.docs h3 code { font: 600 17px/1.3 var(--mono); }
.docs p, .docs li { color: var(--ink-2); }
.docs .code { margin: 14px 0 6px; }
.docs code.inline { font: 14px/1.4 var(--mono); background: var(--surface-2); padding: 2px 6px; border-radius: 5px; }
.toc { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 15px; margin: 18px 0 0; padding: 0; list-style: none; }
.toc a { color: var(--ink-2); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }