/* TESS Transit Hunter — documentation site.
   Colours match the pipeline's figures (src/transit_hunter/plotting.py). */

:root {
  --bg: #fcfcfb;
  --bg-2: #f4f3ef;
  --card: #ffffff;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --line: #e1e0d9;
  --line-2: #c3c2b7;
  --blue: #2a78d6;
  --blue-ink: #1c5cab;
  --blue-soft: #e6f0fc;
  --orange: #eb6834;
  --aqua: #1baf7a;
  --yellow: #eda100;
  --good: #0ca30c;
  --warn: #c98500;
  --bad: #d03b3b;
  --code-bg: #f4f3ef;
  --figure-bg: #fcfcfb;
  --shadow: 0 1px 2px rgba(20, 20, 18, .05), 0 8px 24px -12px rgba(20, 20, 18, .12);
  --space: #050912;
  --space-2: #0b1730;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-head: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 12px;
  --measure: 46rem;
  --wide: 72rem;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111110; --bg-2: #1a1a19; --card: #1d1d1c; --ink: #f5f5f2; --ink-2: #c3c2b7;
    --muted: #8f8e87; --line: #2e2e2c; --line-2: #45443f; --blue: #5598e7; --blue-ink: #86b6ef;
    --blue-soft: #16263d; --orange: #f07a4a; --aqua: #2bc48c; --yellow: #f2b01e;
    --good: #3cc43c; --warn: #f2b01e; --bad: #ef6363; --code-bg: #1a1a19;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -12px rgba(0, 0, 0, .6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #111110; --bg-2: #1a1a19; --card: #1d1d1c; --ink: #f5f5f2; --ink-2: #c3c2b7;
  --muted: #8f8e87; --line: #2e2e2c; --line-2: #45443f; --blue: #5598e7; --blue-ink: #86b6ef;
  --blue-soft: #16263d; --orange: #f07a4a; --aqua: #2bc48c; --yellow: #f2b01e;
  --good: #3cc43c; --warn: #f2b01e; --bad: #ef6363; --code-bg: #1a1a19;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 24px -12px rgba(0, 0, 0, .6);
  color-scheme: dark;
}

/* ------------------------------------------------------------------ base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 5rem; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 400 17px/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img, svg, canvas { max-width: 100%; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--blue-ink); }
code, pre, kbd { font-family: var(--font-mono); font-size: .88em; }
.muted { color: var(--muted); }
.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 1rem; top: 1rem; z-index: 99; background: var(--card); padding: .5rem 1rem; border-radius: 8px; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; letter-spacing: -.01em; color: var(--ink); }
.kicker {
  font: 500 .78rem/1 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--blue); margin: 0 0 .9rem;
}
.kicker code { font-size: 1em; text-transform: none; letter-spacing: 0; background: none; padding: 0; color: inherit; }
.kicker--light { color: #86b6ef; }

/* ------------------------------------------------------------------ top bar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar--overlay {
  position: absolute; left: 0; right: 0; background: transparent; border-bottom-color: rgba(255, 255, 255, .08);
  backdrop-filter: none; -webkit-backdrop-filter: none;
}
.topbar__inner {
  max-width: var(--wide); margin: 0 auto; padding: .7rem 1.25rem;
  display: flex; align-items: center; gap: 1rem;
}
.brand {
  display: inline-flex; align-items: center; gap: .55rem; text-decoration: none;
  font: 700 1.05rem var(--font-head); color: var(--ink); white-space: nowrap;
}
.brand__mark { width: 28px; height: 28px; color: var(--blue); flex-shrink: 0; }
.topbar--overlay .brand, .topbar--overlay .nav a, .topbar--overlay .theme-btn { color: #e8eefb; }
.topbar--overlay .brand__mark { color: #ffd27a; }
.nav { margin-left: auto; display: flex; align-items: center; gap: .15rem; }
.nav a {
  color: var(--ink-2); text-decoration: none; font-size: .92rem; font-weight: 500;
  padding: .45rem .55rem; border-radius: 8px; white-space: nowrap;
}
.nav a:hover { color: var(--ink); background: var(--bg-2); }
.topbar--overlay .nav a:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.nav a.is-active { color: var(--blue); background: var(--blue-soft); }
.topbar--overlay .nav a.is-active { color: #fff; background: rgba(255, 255, 255, .12); }
.nav__gh { display: inline-flex; align-items: center; gap: .4rem; }
.nav__gh svg { flex-shrink: 0; }
.nav__gh span { display: none; }
.theme-btn {
  border: 1px solid var(--line); background: transparent; color: var(--ink-2); border-radius: 8px;
  width: 36px; height: 36px; display: grid; place-items: center; cursor: pointer; margin-left: .35rem;
}
.topbar--overlay .theme-btn { border-color: rgba(255, 255, 255, .2); }
.theme-btn .i-moon { display: none; }
:root[data-theme="dark"] .theme-btn .i-sun { display: none; }
:root[data-theme="dark"] .theme-btn .i-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-btn .i-sun { display: none; }
  :root:not([data-theme="light"]) .theme-btn .i-moon { display: block; }
}
.nav-toggle, .nav-burger { display: none; }

@media (max-width: 1140px) {
  .nav__gh span { display: inline; }
  .nav-burger {
    display: grid; place-items: center; margin-left: auto; width: 40px; height: 40px; cursor: pointer;
    border-radius: 8px; border: 1px solid var(--line);
  }
  .topbar--overlay .nav-burger { border-color: rgba(255, 255, 255, .25); }
  .nav-burger span, .nav-burger span::before, .nav-burger span::after {
    display: block; width: 18px; height: 2px; background: currentColor; position: relative; content: "";
    color: var(--ink);
  }
  .topbar--overlay .nav-burger span, .topbar--overlay .nav-burger span::before, .topbar--overlay .nav-burger span::after { color: #fff; }
  .nav-burger span::before { position: absolute; top: -6px; }
  .nav-burger span::after { position: absolute; top: 6px; }
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: .5rem 1rem 1rem; gap: .1rem;
  }
  .topbar--overlay .nav { background: var(--space-2); }
  .nav-toggle:checked ~ .nav { display: flex; }
  .theme-btn { margin: .4rem 0 0; }
}

/* ------------------------------------------------------------------ hero */
.hero {
  position: relative; overflow: hidden; color: #e8eefb;
  background: radial-gradient(120% 90% at 75% 20%, #16305a 0%, var(--space-2) 45%, var(--space) 100%);
  padding: 7.5rem 1.25rem 4.5rem;
}
.hero__sky { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero__inner {
  position: relative; max-width: var(--wide); margin: 0 auto;
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 3rem; align-items: center;
}
.hero__title {
  font-size: clamp(2.3rem, 5vw, 3.7rem); line-height: 1.04; margin: 0 0 1.2rem; color: #fff; letter-spacing: -.025em;
}
.hero__lede { font-size: 1.12rem; color: #b8c4dc; max-width: 34rem; margin: 0 0 1.8rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 1.6rem; }
.btn {
  display: inline-flex; align-items: center; gap: .5rem; padding: .75rem 1.2rem; border-radius: 10px;
  font-weight: 600; font-size: .96rem; text-decoration: none; transition: transform .15s, background .15s;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: #2a78d6; color: #fff; }
.btn--primary:hover { background: #3987e5; color: #fff; }
.btn--sm { padding: .5rem .85rem; font-size: .85rem; border: 0; cursor: pointer; }
.btn--ghost { color: #e8eefb; border: 1px solid rgba(255, 255, 255, .25); }
.btn--ghost:hover { color: #fff; background: rgba(255, 255, 255, .08); }
.hero__cmd {
  display: inline-block; margin: 0; padding: .6rem .9rem; border-radius: 8px;
  background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); color: #d6def0; font-size: .85rem;
}
.hero__cmd .prompt { color: #ffd27a; margin-right: .5rem; }
.hero__demo { margin: 0; }
.hero__demo canvas {
  width: 100%; height: auto; display: block; border-radius: 16px;
  background: rgba(255, 255, 255, .03); border: 1px solid rgba(255, 255, 255, .08);
}
.hero__demo figcaption { font-size: .85rem; color: #93a1bf; margin-top: .7rem; text-align: center; }
@media (max-width: 900px) {
  .hero { padding-top: 6rem; }
  .hero__inner { grid-template-columns: 1fr; gap: 2rem; }
}

/* ------------------------------------------------------------------ home sections */
.home { max-width: var(--wide); margin: 0 auto; padding: 0 1.25rem 4rem; }
.section { padding: 4rem 0 1rem; }
.section__head { max-width: 44rem; margin-bottom: 2rem; }
.section__head h2 { font-size: clamp(1.7rem, 3vw, 2.3rem); margin: 0 0 .7rem; }
.section__head p { color: var(--ink-2); margin: 0; font-size: 1.06rem; }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin-top: -2.5rem; position: relative; z-index: 2;
}
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem 1.25rem 1.1rem;
  box-shadow: var(--shadow);
}
.stat__value { font: 600 2.1rem/1.05 var(--font-head); letter-spacing: -.02em; color: var(--ink); }
.stat__value small { font-size: .5em; color: var(--ink-2); font-weight: 500; margin-left: .15rem; }
.stat__label { color: var(--ink-2); font-size: .9rem; margin-top: .45rem; line-height: 1.4; }
.stat__src { display: block; margin-top: .6rem; font: .72rem var(--font-mono); color: var(--muted); }
@media (max-width: 900px) { .stats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .stats { grid-template-columns: 1fr; } }

.prose .steps-grid { margin: 1.5rem 0 1rem; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; counter-reset: step; }
.step-card {
  position: relative; display: block; text-decoration: none; color: var(--ink);
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.35rem 1.35rem 1.25rem; transition: border-color .15s, transform .15s, box-shadow .15s;
}
.step-card:hover { border-color: var(--blue); transform: translateY(-2px); box-shadow: var(--shadow); color: var(--ink); }
.step-card__n { font: 600 .8rem var(--font-mono); color: var(--blue); }
.step-card h3, .prose .step-card h3 { margin: .35rem 0 .45rem; font-size: 1.2rem; padding: 0; border: 0; }
.step-card p, .prose .step-card p { margin: 0; color: var(--ink-2); font-size: .95rem; line-height: 1.5; }
.step-card__mod { display: inline-block; margin-top: .85rem; font: .75rem var(--font-mono); color: var(--muted); }
.step-card svg { position: absolute; right: 1.1rem; top: 1.15rem; width: 58px; height: 34px; color: var(--blue); opacity: .85; }
@media (max-width: 900px) { .steps-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .steps-grid { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

.callout-dark {
  background: radial-gradient(120% 120% at 0% 0%, #16305a, var(--space) 70%); color: #d6def0;
  border-radius: 20px; padding: 2.5rem; margin-top: 4rem; display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem;
  align-items: center;
}
.callout-dark h2 { color: #fff; margin: 0 0 .8rem; font-size: 1.9rem; }
.callout-dark p { margin: 0 0 1.2rem; color: #b8c4dc; }
.funnel-mini { list-style: none; margin: 0; padding: 0; display: grid; gap: .45rem; }
.funnel-mini li {
  margin: 0 auto; padding: .5rem .8rem; border-radius: 8px; text-align: center; font-size: .88rem;
  background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .1); color: #e8eefb;
}
.funnel-mini li:nth-child(1) { width: 100%; }
.funnel-mini li:nth-child(2) { width: 88%; }
.funnel-mini li:nth-child(3) { width: 76%; }
.funnel-mini li:nth-child(4) { width: 64%; }
.funnel-mini li:nth-child(5) { width: 52%; background: rgba(235, 104, 52, .25); border-color: rgba(235, 104, 52, .5); }
.funnel-mini li:nth-child(6) { width: 40%; background: rgba(27, 175, 122, .25); border-color: rgba(27, 175, 122, .55); }
@media (max-width: 800px) { .callout-dark { grid-template-columns: 1fr; padding: 1.75rem; } }

/* ------------------------------------------------------------------ documents */
.doc { max-width: var(--wide); margin: 0 auto; padding: 3rem 1.25rem 4rem; }
.doc__head { max-width: var(--measure); margin: 0 auto 2.5rem; }
.doc__head h1 { font-size: clamp(2rem, 4.2vw, 2.9rem); margin: 0 0 .9rem; letter-spacing: -.02em; }
.lede { font-size: 1.15rem; color: var(--ink-2); margin: 0; line-height: 1.55; }

.prose { max-width: var(--measure); margin: 0 auto; }
.prose > h1:first-child { font-size: clamp(2rem, 4.2vw, 2.8rem); margin-top: 0; }
.prose h2 {
  font-size: 1.65rem; margin: 3.2rem 0 1rem; padding-top: 1.4rem; border-top: 1px solid var(--line);
}
.prose h3 { font-size: 1.22rem; margin: 2.2rem 0 .7rem; }
.prose h2 + h3 { margin-top: 1rem; }
.prose p, .prose ul, .prose ol { margin: 0 0 1.1rem; }
.prose li { margin: .3rem 0; }
.prose li > p { margin: 0; }
.prose strong { font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }
.prose :not(pre) > code {
  background: var(--code-bg); border: 1px solid var(--line); padding: .08em .35em; border-radius: 5px; font-size: .84em;
  overflow-wrap: anywhere;
}
.prose pre, .prose div.highlight {
  background: var(--code-bg); border: 1px solid var(--line); border-radius: 10px;
  padding: 1rem 1.15rem; overflow-x: auto; line-height: 1.55; margin: 0 0 1.4rem;
}
.prose div.highlight pre { background: none; border: 0; padding: 0; margin: 0; }
.prose pre code { font-size: .84rem; }
.prose blockquote {
  margin: 1.5rem 0; padding: .9rem 1.2rem; border-left: 3px solid var(--yellow);
  background: color-mix(in srgb, var(--yellow) 9%, var(--bg)); border-radius: 0 10px 10px 0; color: var(--ink);
}
.prose blockquote p:last-child { margin-bottom: 0; }

/* tables scroll inside their own box instead of the page */
.prose table {
  display: block; max-width: 100%; overflow-x: auto; border-collapse: collapse;
  font-size: .87rem; line-height: 1.45; margin: 0 0 1.6rem; font-variant-numeric: tabular-nums;
}
.prose th, .prose td { padding: .5rem .75rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose thead th {
  font-weight: 600; color: var(--ink-2); border-bottom: 1.5px solid var(--line-2); white-space: nowrap;
  font-size: .8rem; text-transform: none;
}
.prose tbody tr:hover { background: var(--bg-2); }
.prose td:first-child { white-space: nowrap; }

/* figures: light cards so the matplotlib PNGs look intentional in dark mode */
.prose img { display: block; margin: 1.6rem auto; border-radius: 10px; background: var(--figure-bg); }
:root[data-theme="dark"] .prose img { padding: .6rem; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .prose img { padding: .6rem; } }
.fig { margin: 2rem 0; }
.fig img { margin: 0 auto; border: 1px solid var(--line); }
.fig figcaption { font-size: .88rem; color: var(--ink-2); margin-top: .7rem; line-height: 1.5; }
.fig figcaption strong { color: var(--ink); }
.fig--wide { margin-left: -5rem; margin-right: -5rem; }
@media (max-width: 1240px) { .fig--wide { margin-left: 0; margin-right: 0; } }
.fig--wide figcaption { max-width: var(--measure); margin-left: auto; margin-right: auto; }
.fig-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.fig-pair img { margin: 0; }
@media (max-width: 800px) { .fig-pair { grid-template-columns: 1fr; } .fig--wide { margin-left: 0; margin-right: 0; } }

/* maths */
mjx-container[display="true"] { overflow-x: auto; overflow-y: hidden; padding: .3rem 0; min-width: 0 !important; max-width: 100%; }
.eq {
  margin: 1.4rem 0; padding: .6rem 1.2rem; border-radius: 12px; background: var(--bg-2);
  border: 1px solid var(--line); overflow-x: auto;
}
.eq p { margin: 0; }
.eq__note { font-size: .85rem; color: var(--ink-2); margin-top: .2rem !important; }

/* key-number chips */
.keynums { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); gap: .75rem; margin: 1.6rem 0 2rem; }
.keynum { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: .85rem 1rem; }
.keynum b { display: block; font: 600 1.45rem/1.1 var(--font-head); color: var(--ink); letter-spacing: -.01em; }
.keynum span { display: block; font-size: .82rem; color: var(--ink-2); margin-top: .3rem; line-height: 1.35; }

.note {
  border: 1px solid var(--line); background: var(--card); border-radius: 12px; padding: 1rem 1.2rem; margin: 1.6rem 0;
  font-size: .95rem;
}
.note--info { border-left: 3px solid var(--blue); }
.note--warn { border-left: 3px solid var(--yellow); }
.note p:last-child { margin-bottom: 0; }
.note__t { font-weight: 600; display: block; margin-bottom: .25rem; }

.badge { display: inline-block; font: 600 .72rem/1 var(--font-mono); padding: .3rem .45rem; border-radius: 6px; vertical-align: .1em; }
.badge--pass { color: var(--good); background: color-mix(in srgb, var(--good) 13%, transparent); }
.badge--warn { color: var(--warn); background: color-mix(in srgb, var(--warn) 15%, transparent); }
.badge--fail { color: var(--bad); background: color-mix(in srgb, var(--bad) 13%, transparent); }

/* mermaid diagrams */
.mermaid-wrap { margin: 1.8rem 0; padding: 1rem; border: 1px solid var(--line); border-radius: 12px; background: var(--card); overflow-x: auto; text-align: center; }
.mermaid-wrap svg { max-width: 100%; height: auto; }

/* ------------------------------------------------------------------ step layout */
.step-shell { max-width: calc(var(--wide) + 4rem); margin: 0 auto; display: grid; grid-template-columns: 14rem 1fr; gap: 1rem; padding: 0 1.25rem; }
.step-rail { position: sticky; top: 5rem; align-self: start; padding: 3.2rem 0 2rem; min-width: 0; }
.step-rail__title { font: 600 .78rem var(--font-mono); text-transform: uppercase; letter-spacing: .08em; margin: 0 0 .9rem; }
.step-rail__title a { color: var(--muted); text-decoration: none; }
.step-rail ol { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.step-rail li { margin: 0; }
.step-rail a {
  display: flex; align-items: center; gap: .6rem; padding: .45rem .8rem; margin-left: -2px;
  border-left: 2px solid transparent; color: var(--ink-2); text-decoration: none; font-size: .92rem;
}
.step-rail a:hover { color: var(--ink); }
.step-rail__n {
  display: grid; place-items: center; width: 1.45rem; height: 1.45rem; border-radius: 50%;
  font: 600 .72rem var(--font-mono); border: 1.5px solid var(--line-2); color: var(--muted); flex: none;
}
.step-rail li.is-done .step-rail__n { background: var(--blue-soft); border-color: var(--blue); color: var(--blue); }
.step-rail li.is-current a { border-left-color: var(--blue); color: var(--ink); font-weight: 600; }
.step-rail li.is-current .step-rail__n { background: var(--blue); border-color: var(--blue); color: #fff; }
.doc--step { padding-left: 0; padding-right: 0; min-width: 0; margin: 0; max-width: none; }
.step-head h1 { display: flex; align-items: baseline; gap: .9rem; }
.step-head__n { font: 600 .5em var(--font-mono); color: var(--blue); padding: .25em .45em; border-radius: 8px; background: var(--blue-soft); }
.step-pager { max-width: var(--measure); margin: 3.5rem auto 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.pager-card {
  display: flex; flex-direction: column; gap: .2rem; padding: 1rem 1.2rem; border: 1px solid var(--line); border-radius: 12px;
  text-decoration: none; color: var(--ink); background: var(--card);
}
.pager-card:hover { border-color: var(--blue); color: var(--ink); }
.pager-card span { font-size: .82rem; }
.pager-card--next { text-align: right; }
@media (max-width: 960px) {
  .step-shell { grid-template-columns: minmax(0, 1fr); }
  .step-rail { position: static; padding: 1.5rem 0 0; min-width: 0; }
  .step-rail ol { display: flex; overflow-x: auto; border-left: 0; border-bottom: 2px solid var(--line); }
  .step-rail a { border-left: 0; border-bottom: 2px solid transparent; margin: 0 0 -2px; white-space: nowrap; padding: .5rem .7rem; }
  .step-rail li.is-current a { border-bottom-color: var(--blue); }
  .doc--step { padding-top: 2rem; }
}

/* ------------------------------------------------------------------ widgets */
.widget {
  margin: 2rem 0; border: 1px solid var(--line); border-radius: 16px; background: var(--card);
  box-shadow: var(--shadow); overflow: hidden;
}
.widget__head { padding: 1rem 1.25rem .2rem; }
.widget__head h3, .widget__head h4 { margin: 0 0 .25rem; font-size: 1.08rem; }
.widget__head p { margin: 0; color: var(--ink-2); font-size: .9rem; }
.widget__body { padding: 1rem 1.25rem 1.25rem; }
.widget canvas { width: 100%; display: block; }
.widget--wide { margin-left: -3rem; margin-right: -3rem; }
@media (max-width: 1100px) { .widget--wide { margin-left: 0; margin-right: 0; } }
.controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: .9rem 1.4rem; margin-bottom: 1rem; }
.control label { display: flex; justify-content: space-between; font-size: .84rem; color: var(--ink-2); margin-bottom: .25rem; gap: .5rem; }
.control output { font: 500 .84rem var(--font-mono); color: var(--ink); }
input[type="range"] { width: 100%; accent-color: var(--blue); }
.readout { display: grid; grid-template-columns: repeat(auto-fit, minmax(6.5rem, 1fr)); gap: .6rem; }
.readout div { background: var(--bg-2); border-radius: 10px; padding: .6rem .8rem; }
.readout b { display: block; font: 600 1.2rem var(--font-head); color: var(--ink); }
.readout span { font-size: .78rem; color: var(--ink-2); }
.readout .is-good b { color: var(--good); }
.readout .is-bad b { color: var(--bad); }
.verdict { margin-top: .8rem; font-size: .92rem; color: var(--ink-2); }
.verdict strong { color: var(--ink); }

.heatmap { width: 100%; }
.heatmap svg { width: 100%; height: auto; display: block; font-family: var(--font-body); }
.heatmap .cell { stroke: var(--card); stroke-width: 2; cursor: default; }
.heatmap .cell:hover { stroke: var(--ink); }
.heatmap text { fill: var(--ink-2); font-size: 11px; }
.heatmap .cell-label { font: 500 11px var(--font-mono); pointer-events: none; }
.tooltip {
  position: fixed; z-index: 80; pointer-events: none; background: var(--ink); color: var(--bg);
  padding: .45rem .6rem; border-radius: 8px; font-size: .8rem; line-height: 1.35; opacity: 0; transition: opacity .1s;
  max-width: 16rem;
}
.tooltip.is-on { opacity: 1; }
.legend-ramp { display: flex; align-items: center; gap: .5rem; font-size: .78rem; color: var(--ink-2); margin-top: .5rem; }
.legend-ramp i { display: block; height: 10px; width: 10rem; border-radius: 3px; background: linear-gradient(90deg, #cde2fb, #86b6ef, #3987e5, #1c5cab, #0d366b); }

/* roadmap */
.roadmap { list-style: none; margin: 1.8rem 0; padding: 0; position: relative; }
.roadmap::before { content: ""; position: absolute; left: 1.05rem; top: .5rem; bottom: .5rem; width: 2px; background: var(--line); }
.roadmap > li { position: relative; padding: 0 0 1.6rem 3.2rem; margin: 0; }
.roadmap__dot {
  position: absolute; left: 0; top: 0; width: 2.2rem; height: 2.2rem; border-radius: 50%;
  display: grid; place-items: center; font: 600 .85rem var(--font-mono); background: var(--card);
  border: 2px solid var(--line-2); color: var(--muted);
}
.roadmap > li.is-done .roadmap__dot { background: var(--aqua); border-color: var(--aqua); color: #fff; }
.roadmap > li.is-next .roadmap__dot { border-color: var(--blue); color: var(--blue); box-shadow: 0 0 0 4px var(--blue-soft); }
.roadmap h3 { margin: .15rem 0 .4rem; font-size: 1.12rem; }
.roadmap p { margin: 0 0 .5rem; color: var(--ink-2); font-size: .95rem; }
.roadmap ul { margin: 0; padding-left: 1.1rem; font-size: .93rem; }
.roadmap .tag { font: 500 .72rem var(--font-mono); padding: .2rem .45rem; border-radius: 6px; margin-left: .4rem; vertical-align: .15em; }
.roadmap .tag--done { color: var(--aqua); background: color-mix(in srgb, var(--aqua) 14%, transparent); }
.roadmap .tag--next { color: var(--blue); background: var(--blue-soft); }

/* ------------------------------------------------------------------ footer */
.footer { border-top: 1px solid var(--line); background: var(--bg-2); margin-top: 2rem; }
.footer__inner {
  max-width: var(--wide); margin: 0 auto; padding: 2rem 1.25rem; display: grid; grid-template-columns: 1fr auto; gap: 1rem 2rem;
  font-size: .9rem;
}
.footer__links { display: flex; gap: 1.2rem; flex-wrap: wrap; align-items: start; }
.footer__links a { color: var(--ink-2); text-decoration: none; }
.footer__links a:hover { color: var(--blue); }
.footer__credit { grid-column: 1 / -1; font-size: .8rem; margin: 0; }
@media (max-width: 700px) { .footer__inner { grid-template-columns: 1fr; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ------------------------------------------------------------------ code highlighting (rouge) */
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs { color: var(--muted); font-style: italic; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .se { color: var(--aqua); }
.highlight .k, .highlight .kn, .highlight .kd, .highlight .nb, .highlight .ow { color: var(--blue); }
.highlight .nf, .highlight .nc { color: var(--orange); }
.highlight .mi, .highlight .mf, .highlight .m { color: var(--yellow); }
.highlight .nt, .highlight .na { color: var(--blue-ink); }