/*
 * The public site's base, on every page: fonts, tokens, the page frame (notice line, header, footer), buttons,
 * section heads, form controls and alerts. The neutrals are the /app dashboard's (dashboard/src/styles/tokens.css):
 * black and white brand on pure greys; hue only for status (running blue, done green, waiting amber). Light on
 * :root; dark from the system unless the visitor chose light, or from data-theme="dark" (components/site/theme.ts).
 */

/* ---------- Fonts: self-hosted IBM Plex (SIL OFL, licences in /fonts), the dashboard's faces ---------- */
@font-face { font-family: "Plex Sans"; src: url("/fonts/ibm-plex-sans-latin-wght-normal.woff2") format("woff2"); font-weight: 100 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Plex Mono"; src: url("/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-style: normal; font-display: swap; }
/* Arial adjusted to Plex Sans's metrics, so the swap moves nothing. */
@font-face { font-family: "Plex Sans Fallback"; src: local("Arial"), local("Helvetica"), local("Liberation Sans"); size-adjust: 104%; ascent-override: 98%; descent-override: 26%; line-gap-override: 0%; }

/* ---------- Tokens ---------- */
:root {
  color-scheme: light;
  --bg: #f6f6f6;
  --surface: #ffffff;
  --elevated: #efefef;
  --rule: #e2e2e2;
  --rule-soft: #ececec;
  --rule-strong: #7f7f7f;
  --grid: rgba(0, 0, 0, 0.05);
  --text: #111111;
  --text-2: #5a5a5a;
  --text-3: #666666;
  --primary: #111111;
  --primary-hover: #333333;
  --on-primary: #ffffff;
  --brand-tile: #101218;
  --run: #1d4ed8;
  --run-dot: #2563eb;
  --run-subtle: rgba(29, 78, 216, 0.08);
  --done: #166534;
  --done-dot: #15803d;
  --wait: #92400e;
  --wait-dot: #b45309;
  --wait-subtle: rgba(180, 83, 9, 0.1);
  --danger: #b91c1c;
  --focus: #1d4ed8;
  --shadow: 0 1px 0 var(--rule-soft), 0 24px 48px -32px rgba(0, 0, 0, 0.25);

  --sans: "Plex Sans", "Plex Sans Fallback", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --fs-11: 0.6875rem; --fs-12: 0.75rem; --fs-13: 0.8125rem; --fs-14: 0.875rem; --fs-16: 1rem;
  --fs-18: 1.125rem; --fs-22: 1.375rem; --fs-28: 1.75rem;
  --fs-h2: clamp(1.75rem, 1.2rem + 2.2vw, 2.5rem);
  --fs-display: clamp(2.25rem, 1.4rem + 3vw, 3.5rem);
  --fs-hero: clamp(2.375rem, 1.3rem + 4.4vw, 4.5rem);

  --s1: 4px; --s2: 8px; --s3: 12px; --s4: 16px; --s5: 24px; --s6: 32px; --s7: 48px; --s8: 64px; --s9: 96px;
  --r1: 4px; --r2: 6px; --r3: 8px;
  --ease: cubic-bezier(0.2, 0, 0, 1);
  --t-fast: 120ms;
  --wrap: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0a0a0a; --surface: #141414; --elevated: #1f1f1f;
    --rule: #2b2b2b; --rule-soft: #212121; --rule-strong: #707070; --grid: rgba(255, 255, 255, 0.05);
    --text: #ededed; --text-2: #a6a6a6; --text-3: #8c8c8c;
    --primary: #f2f2f2; --primary-hover: #ffffff; --on-primary: #0a0a0a;
    --run: #8fb3ff; --run-dot: #5b8cff; --run-subtle: rgba(91, 140, 255, 0.12);
    --done: #6ad08f; --done-dot: #34c46a; --wait: #f0b46a; --wait-dot: #e09b3d; --wait-subtle: rgba(224, 155, 61, 0.14);
    --danger: #f87171; --focus: #8fb3ff;
    --shadow: 0 1px 0 var(--rule-soft), 0 24px 48px -32px rgba(0, 0, 0, 0.8);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0a0a0a; --surface: #141414; --elevated: #1f1f1f;
  --rule: #2b2b2b; --rule-soft: #212121; --rule-strong: #707070; --grid: rgba(255, 255, 255, 0.05);
  --text: #ededed; --text-2: #a6a6a6; --text-3: #8c8c8c;
  --primary: #f2f2f2; --primary-hover: #ffffff; --on-primary: #0a0a0a;
  --run: #8fb3ff; --run-dot: #5b8cff; --run-subtle: rgba(91, 140, 255, 0.12);
  --done: #6ad08f; --done-dot: #34c46a; --wait: #f0b46a; --wait-dot: #e09b3d; --wait-subtle: rgba(224, 155, 61, 0.14);
  --danger: #f87171; --focus: #8fb3ff;
  --shadow: 0 1px 0 var(--rule-soft), 0 24px 48px -32px rgba(0, 0, 0, 0.8);
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 76px; background: var(--bg); }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 var(--fs-16)/1.6 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-wrap: break-word; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-underline-offset: 3px; }
h1, h2, h3, h4, p, ol, ul, dl, dd, figure { margin: 0; }
ol, ul { padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
code, pre { font-family: var(--mono); }
::selection { background: color-mix(in srgb, var(--run-dot) 25%, transparent); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
main:focus { outline: none; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: var(--gutter); }
.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; }
.muted { color: var(--text-2); font-size: var(--fs-14); }
.err { color: var(--danger); font-size: var(--fs-13); }
.skip { position: absolute; left: var(--s4); top: -100px; z-index: 100; background: var(--primary); color: var(--on-primary); padding: var(--s2) var(--s3); border-radius: var(--r1); text-decoration: none; }
.skip:focus { top: var(--s3); }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--s2); min-height: 44px; padding: 0 var(--s5); border-radius: var(--r2); font: 500 var(--fs-14)/1 var(--sans); text-decoration: none; border: 1px solid transparent; cursor: pointer; white-space: nowrap; transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease); }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: progress; }
.btn-ghost { border-color: var(--rule-strong); background: transparent; color: var(--text); }
.btn-ghost:hover { background: var(--elevated); }
.btn-sm { min-height: 36px; padding: 0 var(--s4); font-size: var(--fs-13); }
.btn .arr { font-family: var(--mono); transition: transform var(--t-fast) var(--ease); }
.btn:hover .arr { transform: translateX(2px); }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: var(--r2); border: 1px solid transparent; background: transparent; color: var(--text-2); cursor: pointer; transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease); }
.icon-btn:hover { color: var(--text); background: var(--elevated); }

/* Theme switch: the icon for the theme on screen (moon in light, sun in dark). */
.ico-sun { display: none; }
:root[data-theme="dark"] .ico-sun { display: block; }
:root[data-theme="dark"] .ico-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .ico-sun { display: block; }
  :root:not([data-theme="light"]) .ico-moon { display: none; }
}

/* ---------- Pre-release line ---------- */
.notice { background: var(--surface); border-bottom: 1px solid var(--rule); }
.notice-in { display: flex; align-items: center; gap: var(--s2) var(--s4); padding-block: 9px; font-size: var(--fs-13); color: var(--text-2); }
.notice-in p { flex: 0 1 auto; min-width: 0; }
.notice .tag { flex: none; font: 500 var(--fs-11)/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--text); border: 1px solid var(--rule); border-radius: var(--r1); padding: 4px 6px; }
.notice a { flex: none; color: var(--text); font-weight: 500; }
.notice-short { display: none; }

/* ---------- Header ---------- */
.site-head { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); -webkit-backdrop-filter: saturate(1.4) blur(10px); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--rule); }
.head-in { display: flex; align-items: center; gap: var(--s6); height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; flex: none; }
.brand-name { font-weight: 600; font-size: var(--fs-18); letter-spacing: -0.01em; }
.brand-by { font: 400 var(--fs-12)/1 var(--mono); color: var(--text-3); padding-top: 3px; }
.mark { width: 28px; height: 28px; flex: none; display: grid; place-items: center; border-radius: var(--r1); background: var(--brand-tile); box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12); }
.mark svg { width: 20px; height: 20px; }
.mark-sm { width: 24px; height: 24px; }
.mark-sm svg { width: 16px; height: 16px; }
.nav { display: flex; gap: var(--s1); margin-right: auto; }
.nav a, .menu-panel a { padding: var(--s2) var(--s3); border-radius: var(--r1); text-decoration: none; font-size: var(--fs-14); color: var(--text-2); transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease); }
.nav a:hover, .menu-panel a:hover { color: var(--text); background: var(--elevated); }
.nav a[aria-current="page"], .menu-panel a[aria-current="page"] { color: var(--text); font-weight: 500; }
.head-actions { display: flex; align-items: center; gap: var(--s2); }
.signin { font-size: var(--fs-14); color: var(--text-2); text-decoration: none; padding: var(--s2) var(--s3); border-radius: var(--r1); }
.signin:hover { color: var(--text); background: var(--elevated); }
.cta-short { display: none; }
.menu { display: none; }
.menu > summary { list-style: none; border-color: var(--rule); color: var(--text); }
.menu > summary::-webkit-details-marker { display: none; }
.menu .menu-close, .menu[open] .menu-open { display: none; }
.menu[open] .menu-close { display: inline; }
.menu-panel { position: absolute; left: 0; right: 0; top: 100%; display: grid; gap: 2px; padding: var(--s3) var(--gutter) var(--s4); background: var(--bg); border-bottom: 1px solid var(--rule); box-shadow: 0 16px 32px -24px rgba(0, 0, 0, 0.35); }
.menu-panel a { padding: var(--s3); font-size: var(--fs-16); }

/* ---------- Section heads ---------- */
.idx { display: flex; align-items: baseline; gap: var(--s3); font: 500 var(--fs-12)/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-3); }
.idx b { color: var(--text); font-weight: 500; }
.idx::after { content: ""; flex: 1; height: 1px; background: var(--rule); transform: translateY(-3px); }
.sec { padding-block: var(--s9); border-bottom: 1px solid var(--rule); }
.sec-tight { padding-block: var(--s8) var(--s9); }
.sec-alt { background: var(--surface); }
.sec-head { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--s5) var(--s8); margin-top: var(--s6); align-items: end; }
.sec-head h2 { font-size: var(--fs-h2); line-height: 1.1; font-weight: 600; letter-spacing: -0.025em; text-wrap: balance; }
.sec-head > p { color: var(--text-2); font-size: var(--fs-18); line-height: 1.55; max-width: 38em; text-wrap: pretty; }
.sec-note { margin-top: var(--s6); max-width: 60em; font-size: var(--fs-14); color: var(--text-2); padding-left: var(--s4); border-left: 2px solid var(--rule); }
.sec-note b { color: var(--text); font-weight: 600; }

/* A definition list in ruled rows: label in mono, value in sans. */
.spec { border-top: 1px solid var(--rule); }
.spec > div { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: var(--s4); padding: var(--s4) 0; border-bottom: 1px solid var(--rule); }
.spec dt { font: 500 var(--fs-12)/1.6 var(--mono); color: var(--text-3); text-transform: uppercase; letter-spacing: 0.05em; }
.spec dd { font-size: var(--fs-14); color: var(--text-2); }
.spec dd .muted, .spec dd .code + * { display: block; margin-top: var(--s1); }
.spec dd strong { color: var(--text); font-weight: 600; }

/* Status pills: hue only where it means something. */
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 8px; border-radius: 999px; font: 500 var(--fs-11)/1.2 var(--mono); letter-spacing: 0.02em; white-space: nowrap; }
.pill .dot { width: 6px; height: 6px; border-radius: 50%; flex: none; }
.pill-run { color: var(--run); background: var(--run-subtle); }
.pill-run .dot { background: var(--run-dot); animation: pulse 1.6s var(--ease) infinite; }
.pill-wait { color: var(--wait); background: var(--wait-subtle); }
.pill-wait .dot { background: var(--wait-dot); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
.avail { display: inline-flex; align-items: center; gap: 6px; font: 500 var(--fs-11)/1.2 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; padding: 5px 8px; border: 1px solid var(--rule); border-radius: var(--r1); color: var(--text); background: var(--surface); }

/* ---------- Form controls ---------- */
.field { display: grid; gap: 6px; min-width: 0; align-content: start; }
.field label, fieldset legend { font-size: var(--fs-13); font-weight: 500; }
.opt { color: var(--text-3); font-weight: 400; }
input[type="email"], input[type="text"] { width: 100%; height: 44px; padding: 0 var(--s3); border: 1px solid var(--rule-strong); border-radius: var(--r2); background: var(--surface); color: var(--text); font: 400 var(--fs-16)/1 var(--sans); transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease); }
input::placeholder { color: var(--text-3); }
input:focus-visible { outline: none; border-color: var(--focus); box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 25%, transparent); }
input[aria-invalid="true"] { border-color: var(--danger); }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
fieldset legend { padding: 0; }
/*
 * Segmented control: native radios (one name) as joined segments, so arrow keys, form posts and no-script pages work
 * as the browser's own. The 1px gap over the --rule background draws the dividers, wherever the segments wrap. The
 * radio stays in place, transparent, over its segment; the ring is inset (two layers: focus, then surface) so it shows
 * on a chosen segment and inside the clipped corners. Columns: --seg-cols (3; .seg-workers 4, two by two on phones).
 * Transitions stop under prefers-reduced-motion (the rule at the end of this file).
 */
.seg { --seg-cols: 3; margin-top: 6px; display: grid; grid-template-columns: repeat(var(--seg-cols), minmax(0, 1fr)); gap: 1px; border: 1px solid var(--rule-strong); border-radius: var(--r2); overflow: hidden; background: var(--rule); }
.seg-workers { --seg-cols: 4; }
.seg label { position: relative; display: block; cursor: pointer; background: var(--surface); }
.seg input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; margin: 0; cursor: pointer; }
.seg span { display: flex; align-items: center; justify-content: center; height: 100%; min-height: 44px; text-align: center; padding: var(--s2) var(--s3); font-size: var(--fs-14); font-variant-numeric: tabular-nums; color: var(--text-2); transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease); }
.seg label:hover span { background: var(--elevated); color: var(--text); }
.seg input:checked + span { background: var(--primary); color: var(--on-primary); font-weight: 500; }
.seg label:hover input:checked + span { background: var(--primary-hover); }
.seg input:focus-visible + span { box-shadow: inset 0 0 0 2px var(--focus), inset 0 0 0 4px var(--surface); }
.seg + .err { margin-top: 6px; }

/* ---------- Footer ---------- */
.site-foot { padding-block: var(--s8) calc(var(--s6) + env(safe-area-inset-bottom, 0px)); }
.foot-grid { display: grid; grid-template-columns: minmax(0, 5fr) repeat(3, minmax(0, 2fr)); gap: var(--s6); }
.foot-about p { margin-top: var(--s4); font-size: var(--fs-14); color: var(--text-2); max-width: 30em; }
.foot-grid h2 { margin-bottom: var(--s3); font: 500 var(--fs-12)/1 var(--mono); color: var(--text-3); text-transform: uppercase; letter-spacing: 0.05em; }
.foot-grid ul { display: grid; gap: var(--s2); font-size: var(--fs-14); }
.foot-grid ul a { color: var(--text-2); text-decoration: none; }
.foot-grid ul a:hover { color: var(--text); text-decoration: underline; }
.foot-base { margin-top: var(--s8); padding-top: var(--s4); border-top: 1px solid var(--rule); display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--s3); font: 400 var(--fs-12)/1.5 var(--mono); color: var(--text-3); }

/* ---------- Alerts (sign-in and sign-out notices) ---------- */
.alert-container { position: fixed; z-index: 50; right: var(--gutter); bottom: calc(var(--s5) + env(safe-area-inset-bottom, 0px)); display: grid; gap: var(--s2); width: min(360px, calc(100vw - 2 * var(--gutter))); }
.alert { position: relative; overflow: hidden; display: grid; grid-template-columns: 18px minmax(0, 1fr) auto; gap: var(--s3); align-items: center; padding: var(--s3) var(--s4); background: var(--surface); color: var(--text); border: 1px solid var(--rule); border-radius: var(--r3); box-shadow: var(--shadow); font-size: var(--fs-14); }
.alert-img { width: 18px; height: 18px; }
.alert-green .alert-img { color: var(--done-dot); }
.alert-blue .alert-img { color: var(--run-dot); }
.alert-yellow .alert-img { color: var(--wait-dot); }
.alert-red .alert-img { color: var(--danger); }
.alert-text { margin: 0; }
.alert-close-button { border: 0; background: transparent; color: var(--text-3); font-size: 20px; line-height: 1; cursor: pointer; padding: 2px 4px; border-radius: var(--r1); }
.alert-close-button:hover { color: var(--text); }
.alert-progress { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--rule-strong); transform-origin: left; animation: alert-progress linear forwards; }
@keyframes alert-progress { from { transform: scaleX(1); } to { transform: scaleX(0); } }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav, .head-actions .signin { display: none; }
  .menu { display: block; }
  .head-in { gap: var(--s3); }
  .brand { margin-right: auto; }
  .sec-head { grid-template-columns: minmax(0, 1fr); }
  .foot-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .foot-about { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .sec { padding-block: var(--s8); }
  .sec-tight { padding-block: var(--s6) var(--s8); }
  .notice-long { display: none; }
  .notice-short { display: inline; }
  .notice-in { gap: var(--s3); }
  .spec > div { grid-template-columns: minmax(0, 1fr); gap: var(--s1); }
  .seg { --seg-cols: 1; }
  .seg-workers { --seg-cols: 2; }
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .cta-long, .brand-by { display: none; }
  .cta-short { display: inline; }
}
@media (max-width: 380px) {
  .notice .tag { display: none; }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* "Git environment" term: dotted underline, a small list of supported platforms on hover, focus or tap. */
.term { position: relative; display: inline; }
.term-word {
  font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: help;
  text-decoration: underline dotted var(--rule-strong); text-decoration-thickness: 1px; text-underline-offset: 3px;
}
.term-word:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
.term-tip {
  position: absolute; left: 0; top: calc(100% + 6px); z-index: 30; display: grid; gap: 4px; width: max-content; max-width: min(18rem, 80vw);
  padding: 10px 12px; background: var(--surface); color: var(--text); border: 1px solid var(--rule); border-radius: 6px; box-shadow: var(--shadow);
  font-size: 0.8125rem; line-height: 1.4; text-align: left; white-space: normal;
  opacity: 0; visibility: hidden; transform: translateY(-2px); transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease), visibility var(--t-fast);
}
.term-tip strong { font-family: var(--mono); font-size: 0.6875rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-3); }
.term-tip strong:not(:first-child) { margin-top: 4px; }
.term-list { display: grid; gap: 2px; }
.term-list em { font-style: normal; color: var(--text-2); }
.term:hover .term-tip, .term:focus-within .term-tip { opacity: 1; visibility: visible; transform: none; }
@media (prefers-reduced-motion: reduce) { .term-tip { transition: none; } }

/* Client-side navigation (src/client): the thin bar while the next page's data loads, and no focus ring on the heading
   (or fragment target) that takes the focus when a new page shows. */
.route-progress { position: fixed; top: 0; left: 0; right: 0; z-index: 200; height: 2px; background: var(--focus); transform-origin: left; animation: route-progress 1.2s cubic-bezier(0.1, 0.6, 0.3, 1) forwards; }
@keyframes route-progress { from { transform: scaleX(0); } to { transform: scaleX(0.9); } }
main[aria-busy="true"] { opacity: 0.7; transition: opacity 0.2s ease 0.1s; }
[data-route-focus]:focus { outline: none; }