/* ------------------------------------------------------------------------
   specpi-jev-guard — site styles.

   One stylesheet, no theme gem. Colours are tokens defined once per theme:
   the dark values are declared twice, under the OS media query and under the
   [data-theme] the toggle sets, so a pinned choice always wins.

   The --jv-* tokens at the end of each theme block drive the inlined chart
   SVGs, which are written against those same role names.
   ------------------------------------------------------------------------ */

:root {
  color-scheme: light;

  --plane: #f9f9f7;
  --surface-1: #fcfcfb;
  --surface-2: #f2f1ee;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --ink-3: #898781;
  --line: rgba(11, 11, 11, 0.1);
  --line-strong: #e1e0d9;
  --accent: #2a78d6;
  --accent-ink: #1c5cab;
  --good: #0ca30c;
  --warn: #fab219;
  --crit: #d03b3b;
  --shadow: 0 1px 2px rgba(11, 11, 11, 0.04), 0 8px 24px rgba(11, 11, 11, 0.05);

  --jv-bg: #fcfcfb;
  --jv-panel: #f2f1ee;
  --jv-text: #0b0b0b;
  --jv-dim: #52514e;
  --jv-muted: #898781;
  --jv-grid: #e1e0d9;
  --jv-border: #c3c2b7;
  --jv-allow: #0ca30c;
  --jv-ask: #fab219;
  --jv-block: #d03b3b;
  --jv-accent: #2a78d6;
  --jv-error: #898781;

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --measure: 72ch;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --plane: #0d0d0d;
    --surface-1: #1a1a19;
    --surface-2: #242422;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --ink-3: #898781;
    --line: rgba(255, 255, 255, 0.11);
    --line-strong: #2c2c2a;
    --accent: #3987e5;
    --accent-ink: #86b6ef;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);

    --jv-bg: #1a1a19;
    --jv-panel: #242422;
    --jv-text: #ffffff;
    --jv-dim: #c3c2b7;
    --jv-grid: #2c2c2a;
    --jv-border: #383835;
    --jv-accent: #3987e5;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;

  --plane: #0d0d0d;
  --surface-1: #1a1a19;
  --surface-2: #242422;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --ink-3: #898781;
  --line: rgba(255, 255, 255, 0.11);
  --line-strong: #2c2c2a;
  --accent: #3987e5;
  --accent-ink: #86b6ef;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);

  --jv-bg: #1a1a19;
  --jv-panel: #242422;
  --jv-text: #ffffff;
  --jv-dim: #c3c2b7;
  --jv-grid: #2c2c2a;
  --jv-border: #383835;
  --jv-accent: #3987e5;
}

/* --------------------------------------------------------------- base */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  background: var(--plane);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-ink); text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); text-underline-offset: 2px; }
a:hover { color: var(--accent); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

.skip {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--surface-1);
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  z-index: 20;
}
.skip:focus { left: 16px; }

/* ------------------------------------------------------------- header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--plane) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}

.bar {
  max-width: 1240px;
  margin: 0 auto;
  padding: 10px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 640;
  letter-spacing: -0.01em;
}
.brand-mark { width: 22px; height: 22px; color: var(--accent); flex: none; }
.brand-name { font-size: 15px; }

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 4px;
}

.site-nav a {
  white-space: nowrap;
  padding: 6px 11px;
  border-radius: 8px;
  font-size: 14.5px;
  color: var(--ink-2);
  text-decoration: none;
}
.site-nav a:hover { background: var(--surface-2); color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); background: var(--surface-2); }

.theme-toggle {
  margin-left: 6px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface-1);
  color: var(--ink-2);
  cursor: pointer;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--line-strong); }
/* The icon is a sun in dark mode (click for light) and a moon in light mode. */
:root:not([data-theme="dark"]) .sun-rays { display: none; }
:root:not([data-theme="dark"]) .sun-core { d: path("M20 14.5A8.5 8.5 0 0 1 9.5 4a8.5 8.5 0 1 0 10.5 10.5z"); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .sun-rays { display: inline; }
  :root:not([data-theme="light"]) .sun-core { d: path("M17 12a5 5 0 1 1-10 0 5 5 0 0 1 10 0z"); }
}
:root[data-theme="dark"] .sun-rays { display: inline; }
:root[data-theme="dark"] .sun-core { d: path("M17 12a5 5 0 1 1-10 0 5 5 0 0 1 10 0z"); }

/* --------------------------------------------------------------- hero */

.hero {
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(60rem 22rem at 12% -30%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 70%),
    var(--surface-1);
}

.hero-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 72px 32px 56px;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 12.5px;
  font-weight: 620;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-ink);
}

.hero h1 {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(2.2rem, 1.3rem + 3vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 680;
}

.hero .lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.2rem);
  line-height: 1.55;
  color: var(--ink-2);
}

.hero-meta {
  margin: 20px 0 0;
  font-size: 13.5px;
  color: var(--ink-3);
}

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

.shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 56px 32px 88px;
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.toc { display: none; }
.toc.is-ready { display: block; position: sticky; top: 76px; }
.toc-title {
  margin: 0 0 10px;
  font-size: 11.5px;
  font-weight: 620;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.toc nav { display: flex; flex-direction: column; border-left: 1px solid var(--line); }
.toc a {
  padding: 5px 0 5px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: 13.5px;
  line-height: 1.35;
  color: var(--ink-3);
  text-decoration: none;
}
.toc a:hover { color: var(--ink); }
.toc a.active { color: var(--ink); border-left-color: var(--accent); }

/* The prose column is a readable measure; figures break out wider. */
.prose {
  display: grid;
  grid-template-columns: [text-start] min(var(--measure), 100%) [text-end] minmax(0, 1fr);
}
.prose > * { grid-column: text-start / text-end; min-width: 0; }
.prose > figure,
.prose > .stat-grid,
.prose > .callout,
.prose > table { grid-column: 1 / -1; }

/* ------------------------------------------------------------- typography */

.prose > :where(*) { margin: 0; }
.prose > * + * { margin-top: 1.15em; }
.prose h2 {
  margin: 2.6em 0 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--line);
  font-size: clamp(1.4rem, 1.2rem + 0.8vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 650;
}
.prose h2:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.prose h3 {
  margin: 2em 0 0;
  font-size: 1.12rem;
  letter-spacing: -0.01em;
  font-weight: 650;
}
.prose strong { font-weight: 640; }

.prose :where(ul, ol) { padding-left: 1.3em; }
.prose li + li { margin-top: 0.5em; }
.prose li::marker { color: var(--ink-3); }

.prose blockquote {
  margin: 0;
  padding: 2px 0 2px 18px;
  border-left: 2px solid var(--accent);
  color: var(--ink-2);
}

.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }

/* Ordered lists that carry steps read better with a little air. */
.prose ol > li { padding-left: 4px; }

/* ------------------------------------------------------------------ code */

code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.1em 0.36em;
  overflow-wrap: anywhere;
}

pre {
  margin: 0;
  overflow-x: auto;
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.6;
  box-shadow: var(--shadow);
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }
.highlighter-rouge { margin-top: 1.1em; }

/* Rouge tokens, kept to the few that appear in shell and JSON samples. */
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs { color: var(--ink-3); font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr, .highlight .kt, .highlight .ow { color: var(--accent-ink); }
.highlight .nb, .highlight .bp, .highlight .nt { color: var(--accent-ink); }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .se, .highlight .sx { color: var(--good); }
.highlight .m, .highlight .mi, .highlight .mf, .highlight .il { color: var(--crit); }
.highlight .na, .highlight .nv, .highlight .vg, .highlight .vi { color: var(--ink); }
.highlight .err { color: var(--crit); background: none; }

/* --------------------------------------------------------------- figures */

figure.chart {
  margin: 2.4em 0 0;
  padding: 18px 18px 6px;
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.chart-scroll { overflow-x: auto; }
.chart-scroll svg { display: block; width: 100%; height: auto; }
.chart .mark-g { cursor: help; }
.chart .mark-g:hover .mark { opacity: 0.82; }
figure.chart figcaption {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-3);
}

/* ------------------------------------------------------------ stat cards */

.stat-grid {
  margin: 2em 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
  gap: 14px;
}

.stat-card {
  padding: 16px 18px;
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.stat-card strong {
  display: block;
  font-size: 1.85rem;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 660;
}
.stat-card span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.45;
  color: var(--ink-3);
}
.stat-card.good strong { color: var(--good); }
.stat-card.warn strong { color: var(--warn); }
.stat-card.crit strong { color: var(--crit); }

/* ----------------------------------------------------------- install row */

.install {
  margin: 28px 0 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.install code {
  background: var(--surface-2);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14.5px;
}
.install button {
  border: 1px solid var(--line-strong);
  background: var(--surface-1);
  color: var(--ink-2);
  border-radius: 10px;
  padding: 10px 14px;
  font: inherit;
  font-size: 13.5px;
  cursor: pointer;
}
.install button:hover { color: var(--ink); }
.install .sep { color: var(--ink-3); font-size: 13.5px; }

/* --------------------------------------------------------------- callout */

.callout {
  margin: 2em 0 0;
  padding: 16px 18px;
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  font-size: 15.5px;
  color: var(--ink-2);
}
.callout strong { color: var(--ink); }
.callout p { margin: 0; }
.callout p + p { margin-top: 0.6em; }

/* ---------------------------------------------------------------- tables */

/* A comparison table is a card, like a figure, and gets the same width. */
.prose table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 15px;
  background: var(--surface-1);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.prose th, .prose td {
  text-align: left;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.prose tbody tr:last-child td { border-bottom: 0; }
.prose th {
  font-weight: 620;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--ink-3);
  background: var(--surface-2);
}
.prose td:first-child { width: 22%; font-weight: 620; color: var(--ink); }
.prose tbody tr:hover td { background: color-mix(in srgb, var(--surface-2) 55%, transparent); }

/* The scenario tables on the Testing page: three columns, verdict on the right. */
.prose table.results td:first-child { width: 40%; }
.prose table.results td.ev {
  font-weight: 400;
  color: var(--ink-2);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}
.prose table.results td.ok,
.prose table.results td.bad,
.prose table.results td.skip {
  width: 14%;
  white-space: nowrap;
  font-weight: 620;
  font-size: 13.5px;
}
.prose table.results td.ok { color: var(--good); }
.prose table.results td.bad { color: var(--crit); }
.prose table.results td.skip { color: var(--ink-3); font-weight: 500; }
.prose p.table-note {
  color: var(--ink-3);
  font-size: 14.5px;
  margin-top: 0.4em;
}

/* ---------------------------------------------------------------- footer */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface-1);
}
.foot-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 40px 32px 56px;
  color: var(--ink-3);
  font-size: 14px;
}
.foot-inner p { margin: 0 0 8px; }
.foot-inner strong { color: var(--ink); }
.foot-links { display: flex; gap: 18px; }
.foot-note { margin-top: 14px; font-size: 13px; }

/* ------------------------------------------------------------ responsive */

@media (max-width: 1080px) {
  .shell { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .toc.is-ready { display: none; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .bar, .hero-inner, .shell, .foot-inner { padding-left: 16px; padding-right: 16px; }
  .hero-inner { padding-top: 48px; padding-bottom: 36px; }
  .shell { padding-top: 36px; }
  .brand-name { display: none; }
  .site-nav { gap: 1px; }
  .site-nav a { padding: 6px 6px; font-size: 13px; }
  .theme-toggle { margin-left: 2px; }
  /* Charts stop being legible below ~840px, so they scroll instead. */
  .chart-scroll svg { width: 840px; }
  figure.chart { padding: 14px 14px 4px; }
}