/* Brand tokens from docs/brand/BRAND.md — canonical values only.
   Dark-first: :root carries the dark set; light backs a media override. */
:root {
  --color-base: #eaecf0;
  --color-primary: #6b8fe8;
  --background-color-base: #16181c;

  /* Derived neutrals — same families as the canonical tokens */
  --surface: #1d2026;
  --surface-raised: #24272e;
  --border: #2e323a;
  --text-muted: rgba(234, 236, 240, 0.72);
  --cta-text: #16181c;
}

@media (prefers-color-scheme: light) {
  :root {
    --color-base: #202122;
    --color-primary: #3366cc;
    --background-color-base: #ffffff;

    --surface: #f6f7f9;
    --surface-raised: #eef0f3;
    --border: #d9dce2;
    --text-muted: rgba(32, 33, 34, 0.72);
    --cta-text: #ffffff;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  max-width: 100%;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  color: var(--color-base);
  background: var(--background-color-base);
  line-height: 1.65;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.55rem 0.9rem;
  background: var(--color-primary);
  color: var(--cta-text);
  font-weight: 700;
  text-decoration: none;
  border-radius: 4px;
  transform: translateY(calc(-100% - 1rem));
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid var(--color-base);
  outline-offset: 2px;
}

a:focus-visible,
.cta:focus-visible,
.copy-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

main:focus {
  outline: none;
}

code,
pre {
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
}

code {
  font-size: 0.9em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.1em 0.35em;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

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

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border);
}

/* Wordmark per BRAND.md: monospace, bold, lowercase, 1em clear space */
.specwiki-logo {
  display: inline-block;
  margin: 1em;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--color-base);
  text-decoration: none;
}

.specwiki-logo-bracket {
  color: var(--color-primary);
}

.header-link {
  margin-right: 1em;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: none;
}

.header-link:hover {
  color: var(--color-primary);
}

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

main {
  max-width: 62rem;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

.section {
  padding: 4.5rem 0 0;
  border-top: 1px solid var(--border);
  margin-top: 4.5rem;
}

/* Numbered kickers — editorial section labels */
.kicker {
  margin: 0 0 0.75rem;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.kicker-num {
  color: var(--color-primary);
  margin-right: 0.75em;
}

.section-title {
  font-size: 1.75rem;
  line-height: 1.25;
  margin: 0 0 1.25rem;
  max-width: 34rem;
}

.section-prose {
  max-width: 42rem;
}

.section-prose p {
  margin: 0 0 1rem;
}

/* ---------- 01 hero ---------- */

.hero {
  padding: 4.5rem 0 0;
}

.hero h1 {
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 2.5rem;
  max-width: 16em;
}

.narrative {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.narrative-block h2 {
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--color-primary);
}

.narrative-block p {
  margin: 0;
  color: var(--text-muted);
}

.hero-panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  gap: 1.5rem;
  align-items: start;
}

.hero-cta {
  margin: 2.5rem 0 0;
}

.cta {
  display: inline-block;
  min-height: 2.75rem;
  padding: 0.8rem 1.6rem;
  background: var(--color-primary);
  color: var(--cta-text);
  font-weight: 700;
  text-decoration: none;
  border-radius: 4px;
}

/* ---------- terminal blocks ---------- */

.terminal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.9rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 50%;
  background: var(--border);
}

.terminal-name {
  margin-left: 0.5rem;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.copy-btn {
  margin-left: auto;
  min-height: 1.75rem;
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--background-color-base);
  color: var(--text-muted);
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}

.copy-btn:hover {
  color: var(--color-base);
  border-color: var(--color-primary);
}

.copy-btn.is-copied {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.terminal-body {
  margin: 0;
  padding: 1rem 1.1rem;
  font-size: 0.85rem;
  line-height: 1.7;
  overflow-x: auto;
}

.terminal-snippets {
  padding: 1rem 1.1rem;
  font-size: 0.85rem;
  line-height: 1.7;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.terminal-snippet pre {
  margin: 0.35rem 0 0;
  overflow-x: auto;
}

.terminal-snippet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.term-comment {
  color: var(--text-muted);
}

/* ---------- agent prompt ---------- */

.agent-prompt {
  border: 1px dashed var(--color-primary);
  border-radius: 8px;
  padding: 0.9rem 1.1rem;
  background: var(--surface);
}

.agent-prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.agent-prompt-label {
  margin: 0;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.agent-prompt .copy-btn {
  flex-shrink: 0;
}

.agent-prompt-body {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---------- 02 coverage table ---------- */

.coverage-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-top: 1.5rem;
}

.coverage-table {
  width: 100%;
  min-width: 20rem;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.coverage-table td code {
  word-break: break-word;
}

.coverage-table th,
.coverage-table td {
  text-align: left;
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
}

.coverage-table th {
  background: var(--surface-raised);
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.coverage-table tbody tr:nth-child(odd) {
  background: var(--surface);
}

/* ---------- 03 steps ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.step-num {
  margin: 0 0 0.4rem;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-size: 1.1rem;
  color: var(--color-primary);
}

.step h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.step p {
  margin: 0;
  font-size: 0.925rem;
  color: var(--text-muted);
}

/* ---------- 04 example ---------- */

.example {
  display: grid;
  gap: 1.5rem;
  margin: 2rem 0;
}

.panel-label {
  margin: 0 0 0.6rem;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.file-tree {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  overflow-x: auto;
}

.file-tree pre {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
}

/* static wiki-mock panel — reads as the generated wiki, stays pure HTML/CSS */
.wiki-mock {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
}

.wiki-mock-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
}

.wiki-mock-logo {
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-weight: 700;
  font-size: 0.85rem;
}

.wiki-mock-bracket {
  color: var(--color-primary);
}

.wiki-mock-search {
  flex: 1 1 8rem;
  min-width: 0;
  max-width: 14rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--background-color-base);
}

.wiki-mock-body {
  padding: 1rem 1.25rem 1.25rem;
}

.wiki-mock-portal {
  margin: 0 0 0.6rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
  font-size: 1.3rem;
  font-weight: 700;
}

.wiki-mock-title {
  margin: 0 0 0.25rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.wiki-mock-meta {
  margin: 0 0 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.wiki-mock-category {
  margin: 0 0 0.4rem;
  font-family:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.wiki-mock-pages {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.9rem;
}

.wiki-mock-pages li {
  margin-bottom: 0.3rem;
}

.wiki-mock-link {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ---------- 05 facts ---------- */

.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 2rem;
  margin-top: 2rem;
  align-items: start;
}

.fact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.fact-list li {
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--text-muted);
}

.fact-list strong {
  color: var(--color-base);
}

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-sep {
  margin: 0 0.6em;
}

@media (max-width: 479px) {
  main {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .site-header {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .specwiki-logo {
    margin: 0.75em 0.5em;
    font-size: 0.95rem;
  }

  .header-link {
    margin-right: 0.5em;
  }

  .hero,
  .section {
    padding-top: 3rem;
  }

  .section {
    margin-top: 3rem;
  }

  .hero h1 {
    margin-bottom: 2rem;
  }

  .wiki-mock-search {
    display: none;
  }
}

@media (min-width: 48rem) {
  .example {
    grid-template-columns: 1fr 1fr;
  }

  .example-command {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}