/* pySPWB site - self-contained, no external fonts or frameworks.
   Shares its design system with the CloakClip site so the two
   Charette AI Group applications look like siblings; the accent is
   SPWB's own indigo, taken from app_config.ACCENT_COLOUR. */

:root {
  --accent: #4f46e5;
  --accent-strong: #4338ca;
  --accent-soft: rgba(99, 102, 241, 0.10);
  /* Dark green, kept dark enough in both themes that white text stays
     comfortably above the 4.5:1 contrast minimum. */
  --donate: #15803d;
  --donate-strong: #166534;
  --bg: #ffffff;
  --bg-alt: #f7f7fb;
  --bg-code: #f3f4f8;
  --text: #1f2233;
  --text-muted: #5b6072;
  --border: #e4e5ee;
  --shadow: 0 1px 2px rgba(23, 25, 40, 0.05), 0 8px 24px rgba(23, 25, 40, 0.06);
  --radius: 10px;
  --maxWidth: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #8b8cf6;
    --accent-strong: #a5a6f9;
    --accent-soft: rgba(139, 140, 246, 0.14);
    --donate: #15803d;
    --donate-strong: #1a9e4b;
    --bg: #14151c;
    --bg-alt: #1a1c25;
    --bg-code: #1f2130;
    --text: #e8e9f0;
    --text-muted: #a2a6b8;
    --border: #2b2e3d;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; font-weight: 650; }
h2 { font-size: 1.65rem; margin-top: 0; letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; margin-top: 2rem; }
h4 { font-size: 1rem; margin-top: 1.5rem; color: var(--text); }
p { margin: 0 0 1rem; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { margin: 0 0 1rem; padding-left: 1.25rem; }
li { margin-bottom: .45rem; }
strong { font-weight: 650; }

code, kbd {
  font-family: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, monospace;
  font-size: .875em;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: .12em .4em;
}
kbd { font-weight: 600; }

img { max-width: 100%; height: auto; }

.wrap { max-width: var(--maxWidth); margin: 0 auto; padding: 0 24px; }

/* ---------------------------------------------------------------- nav -- */

.siteNav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.siteNav .wrap {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 62px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand img { width: 26px; height: 26px; border-radius: 6px; }
.navLinks { display: flex; gap: 20px; margin-left: auto; align-items: center; }
.navLinks a { color: var(--text-muted); font-size: .93rem; }
.navLinks a:hover { color: var(--accent); text-decoration: none; }

@media (max-width: 860px) {
  .navLinks a:not(.btnSmall) { display: none; }
}

/* Two buttons plus the brand do not fit a phone at full length, and the
   label would wrap to two lines inside the button. */
@media (max-width: 520px) {
  .wideOnly { display: none; }
  .navLinks { gap: 10px; }
}

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

.hero { padding: 72px 0 56px; border-bottom: 1px solid var(--border); }
.heroGrid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.heroIcon { width: 76px; height: 76px; border-radius: 18px; margin-bottom: 20px; box-shadow: var(--shadow); }
.hero h1 { font-size: 2.9rem; letter-spacing: -0.025em; margin-bottom: .35em; }
.heroLead { font-size: 1.18rem; color: var(--text-muted); margin-bottom: 1.75rem; }
.heroShot { border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); display: block; }

@media (max-width: 860px) {
  .hero { padding: 48px 0 40px; }
  .heroGrid { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 2.2rem; }
}

/* ------------------------------------------------------------ buttons -- */

.btnRow { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

.btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  transition: background-color .15s ease, border-color .15s ease;
}
.btn:hover { text-decoration: none; }
.btnPrimary { background: var(--accent); color: #fff; }
.btnPrimary:hover { background: var(--accent-strong); color: #fff; }
.btnGhost { border-color: var(--border); color: var(--text); background: var(--bg); }
.btnGhost:hover { border-color: var(--accent); color: var(--accent); }
.btnSmall {
  padding: 7px 14px;
  border-radius: 7px;
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
  font-size: .88rem;
  white-space: nowrap;
}
.btnSmall:hover { background: var(--accent-strong); text-decoration: none; }
.btnDonate { background: var(--donate); }
.btnDonate:hover { background: var(--donate-strong); }

.fineprint { color: var(--text-muted); font-size: .875rem; margin-top: 1rem; }

/* ------------------------------------------------------------ layout --- */

.band { padding: 64px 0; border-bottom: 1px solid var(--border); }
.band.alt { background: var(--bg-alt); }
.bandHead { max-width: 720px; margin-bottom: 36px; }
.bandHead p { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 0; }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 { margin: 0 0 .4rem; font-size: 1.02rem; }
.card p { margin: 0; color: var(--text-muted); font-size: .95rem; }

@media (max-width: 860px) { .cards { grid-template-columns: 1fr; } }

/* --------------------------------------------------------- manual ------ */

.manualGrid { display: grid; grid-template-columns: 232px 1fr; gap: 48px; align-items: start; }

.toc { position: sticky; top: 86px; font-size: .92rem; }
.toc strong {
  display: block;
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.toc ol { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--border); }
.toc li { margin: 0; }
.toc a {
  display: block;
  padding: 6px 0 6px 14px;
  margin-left: -2px;
  border-left: 2px solid transparent;
  color: var(--text-muted);
}
.toc a:hover { color: var(--accent); border-left-color: var(--accent); text-decoration: none; }

.manualBody > section { scroll-margin-top: 86px; }
.manualBody > section + section {
  margin-top: 44px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

@media (max-width: 860px) {
  .manualGrid { grid-template-columns: 1fr; gap: 28px; }
  .toc { position: static; }
}

figure { margin: 22px 0; }
figure img { border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); display: block; }
figcaption { color: var(--text-muted); font-size: .875rem; margin-top: 10px; }

.note {
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
  padding: 14px 18px;
  margin: 22px 0;
}
.note p:last-child { margin-bottom: 0; }
.note strong { color: var(--text); }

.steps { counter-reset: step; list-style: none; padding: 0; }
.steps li { counter-increment: step; position: relative; padding-left: 42px; margin-bottom: 14px; }
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0; top: -1px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: .85rem;
  font-weight: 650;
  display: grid;
  place-items: center;
}

table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: .95rem; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-weight: 650; background: var(--bg-alt); }
.tableScroll { overflow-x: auto; }

/* -------------------------------------------------------- download ----- */

.downloadGrid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 8px; }
.downloadCard {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  background: var(--bg);
}
.downloadCard h3 { margin-top: 0; }
.downloadCard p { color: var(--text-muted); font-size: .95rem; }

@media (max-width: 860px) { .downloadGrid { grid-template-columns: 1fr; } }

/* ---------------------------------------------------------- donate ----- */

.donate { max-width: 760px; }
.donate h2 { margin-bottom: .6em; }

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

.siteFooter { padding: 40px 0; color: var(--text-muted); font-size: .9rem; }
.siteFooter .wrap { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; }
.siteFooter a { color: var(--text-muted); }
.siteFooter a:hover { color: var(--accent); }


/* ------------------------------------------------- pySPWB additions ---- */

/* A screenshot and its explanation, alternating sides down the page. The
   picture is the point on a page like this - a measurement engineer
   recognises their own work in a spectrum far faster than they read a
   paragraph about one. */
.feature {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 44px;
  align-items: center;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}
.feature:last-child { border-bottom: 0; }
.feature.flip .featureText { order: 2; }
.feature h3 { margin-top: 0; font-size: 1.35rem; }
.feature p { color: var(--text-muted); }
.feature img {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: block;
}
.featureTag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 4px 11px;
  margin-bottom: 12px;
}

@media (max-width: 860px) {
  .feature { grid-template-columns: 1fr; gap: 24px; padding: 28px 0; }
  .feature.flip .featureText { order: 0; }
}

/* Three download cards rather than CloakClip's two. */
.downloadGrid.three { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 980px) { .downloadGrid.three { grid-template-columns: 1fr; } }

.downloadCard .platform {
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.downloadCard .size { font-variant-numeric: tabular-nums; }

/* The documentation index: a link list that still reads as a grid. */
.docsGrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.docsCard {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  background: var(--bg);
}
.docsCard h3 { margin: 0 0 .5rem; font-size: 1.02rem; }
.docsCard ul { margin: 0; padding-left: 1.1rem; }
.docsCard li { margin-bottom: .35rem; font-size: .95rem; }
.docsCard p { color: var(--text-muted); font-size: .95rem; margin: 0 0 .6rem; }

@media (max-width: 860px) { .docsGrid { grid-template-columns: 1fr; } }

/* "pip install spwb" wants to be readable from across a room. */
.codeBlock {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  font-family: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, monospace;
  font-size: .95rem;
  overflow-x: auto;
  margin: 0 0 1rem;
}
.codeBlock .comment { color: var(--text-muted); }
.codeBlock div + div { margin-top: .35rem; }

/* The two ways of running it, side by side, neither one the poor relation. */
.routeGrid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.route {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  background: var(--bg);
}
.route.headline { border-color: var(--accent); box-shadow: var(--shadow); }
.route h3 { margin-top: 0; }
.route ul { color: var(--text-muted); font-size: .95rem; }

@media (max-width: 860px) { .routeGrid { grid-template-columns: 1fr; } }

/* Small facts worth stating without a paragraph around each. */
.factRow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
}
.factRow li {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: .88rem;
  color: var(--text-muted);
  margin: 0;
  background: var(--bg);
}