/* protocol.standardpower.co — site stylesheet.
   Plain CSS, no build step, no external fonts/requests: keeps Lighthouse
   performance high and this file trivially auditable. */

:root {
  color-scheme: light;
  --ink: #0b1220;
  --ink-soft: #3a4459;
  --paper: #ffffff;
  --paper-soft: #f4f6fb;
  --line: #dde3ee;
  --accent: #1d4ed8;
  --accent-ink: #ffffff;
  --code-bg: #0b1220;
  --code-ink: #e6ebf5;
  --warn-bg: #fff7e6;
  --warn-line: #f2c94c;
  --max-w: 74rem;
  --prose-w: 46rem;
  --radius: 10px;
  font-size: 17px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}

a {
  color: var(--accent);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.75rem 1rem;
  z-index: 100;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
  top: 0;
}

header.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.site-header .bar {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--ink);
}

.brand .mark {
  width: 28px;
  height: 28px;
  flex: none;
}

nav.primary-nav ul {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

nav.primary-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

nav.primary-nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.banner {
  background: var(--warn-bg);
  border-bottom: 1px solid var(--warn-line);
  color: var(--ink);
  font-size: 0.9rem;
}

.banner .bar {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.6rem 1.5rem;
}

main {
  display: block;
}

.hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 1.5rem 3rem;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.2rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}

.hero p.lede {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 42rem;
  margin: 0 0 2rem;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-secondary {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--line);
}

.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.section {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  background: var(--paper-soft);
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.25rem 0;
  font-size: 0.92rem;
}

caption {
  text-align: left;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

th,
td {
  border: 1px solid var(--line);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--paper-soft);
}

.doc-layout {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}

.doc-toc {
  position: sticky;
  top: 1.5rem;
  font-size: 0.88rem;
}

.doc-toc h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  margin: 0 0 0.6rem;
}

.doc-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.doc-toc a {
  text-decoration: none;
  color: var(--ink-soft);
}

.doc-toc a:hover {
  color: var(--accent);
}

.doc-toc .toc-h3 {
  padding-left: 0.9rem;
}

.prose {
  max-width: var(--prose-w);
}

.prose h1,
.prose h2,
.prose h3 {
  scroll-margin-top: 1.25rem;
}

.prose h1 {
  font-size: 2rem;
}

.prose h2 {
  font-size: 1.45rem;
  border-top: 1px solid var(--line);
  padding-top: 1.75rem;
  margin-top: 2rem;
}

.prose h3 {
  font-size: 1.15rem;
}

.prose pre {
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.88rem;
  line-height: 1.5;
}

.prose code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.9em;
}

.prose :not(pre) > code {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.25rem 0;
  padding: 0.2rem 1rem;
  color: var(--ink-soft);
}

.tier-pill {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
}

.version-pill {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.18rem 0.65rem;
  border-radius: 999px;
  color: #0f7a3d;
  border: 1px solid #b7e3c9;
  background: #eefaf2;
}

.tier-public {
  color: #0f7a3d;
  border-color: #b7e3c9;
  background: #eefaf2;
}

.tier-console {
  color: #9a5b00;
  border-color: #f2d69f;
  background: #fff8ea;
}

.tier-dashboard {
  color: #9b1c1c;
  border-color: #f3c2c2;
  background: #fdecec;
}

footer.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 3rem;
}

footer.site-footer .bar {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  color: var(--ink-soft);
  font-size: 0.88rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

@media (max-width: 760px) {
  .doc-layout {
    grid-template-columns: 1fr;
  }

  .doc-toc {
    position: static;
    border-bottom: 1px solid var(--line);
    padding-bottom: 1rem;
  }
}