/* Wazoo Design System — docs implementation.
 * Tokens mirror wazoo.dev/DESIGN.md v1.0.0; see also wazoo.dev/styles.css.
 * Dark-mode-first, system-adaptive; IBM Plex Mono body, Inter headings,
 * Sunset Orange accents, 8px radius, subtle 1px strokes instead of shadows.
 *
 * Accessibility: --accent-text is the text-safe accent (Sunset Orange on
 * dark, deep orange #9a4d00 on light — ≥4.5:1 in both modes); Rouge token
 * colors are dark/light aware; :focus-visible outlines are always drawn;
 * prefers-reduced-motion collapses all animation. */

:root {
  color-scheme: dark;

  /* colors */
  --primary: #ff8c00;
  --primary-light: #ffb74d;
  --primary-dark: #f57c00;
  --highlight: #ffaa00;
  --selection: #846ce4;
  --void: #040404;
  --surface: #0f0f0f;
  --light-bg: #f7f2e8;
  --text: #b0b0b1;
  --text-muted: #7c7c7c;
  --white: #ffffff;
  --text-dark: #1f1b14;
  --border: #262626;

  /* text-safe accent + code/token colors (overridden in light mode) */
  --accent-text: var(--primary);
  --code-inline: var(--accent-text);
  --tok-keyword: var(--primary);
  --tok-string: var(--primary-light);
  --tok-number: var(--selection);
  --tok-comment: var(--text-muted);
  --tok-ident: var(--white);

  /* typography */
  --font-body: "IBM Plex Mono", monospace;
  --font-heading: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --h1: 2.5rem;
  --h2: 1.5rem;
  --h3: 1.125rem;
  --body: 1.0625rem;
  --caption: 0.875rem;

  /* motion */
  --fast: 0.2s;
  --normal: 0.3s;
  --slow: 0.6s;
  --ease-overshoot: cubic-bezier(0.68, -0.55, 0.27, 1.55);

  /* shapes */
  --radius: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--void);
  color: var(--text);
  line-height: 1.6;
  letter-spacing: -0.025em;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background-color: var(--selection);
  color: var(--white);
}

::-moz-selection {
  background-color: var(--selection);
  color: var(--white);
}

a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--fast) ease, text-shadow var(--fast) ease;
}

a:hover {
  color: var(--accent-text);
  text-shadow: 0 0 8px rgba(255, 140, 0, 0.5);
}

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

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

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 18rem;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  padding: 1.5rem 1.25rem;
  background: var(--surface);
  border-right: 1px solid var(--border);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.content {
  flex: 1;
  min-width: 0;
  max-width: 62rem;
  padding: 2.25rem 2.75rem 4rem;
}

/* ---------- brand ---------- */

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  line-height: 0;
  text-decoration: none;
}

.logo img {
  width: 40px;
  height: 40px;
  transition: transform var(--normal) ease, filter var(--normal) ease;
}

.logo:hover img {
  transform: scale(1.1);
  filter: brightness(1.2);
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-text);
}

.wordmark {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.accent {
  color: var(--accent-text);
}

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

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.6rem;
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color var(--fast) ease, background-color var(--fast) ease,
    border-color var(--fast) ease;
}

.nav-num {
  width: 1.5rem;
  flex-shrink: 0;
  color: var(--accent-text);
  font-size: var(--caption);
  opacity: 0.8;
}

.nav-link:hover {
  color: var(--white);
  background-color: rgba(255, 140, 0, 0.08);
  text-shadow: none;
}

.nav-link.active {
  color: var(--white);
  background-color: rgba(255, 140, 0, 0.12);
  border-color: rgba(255, 140, 0, 0.35);
}

.nav-link.active .nav-num {
  opacity: 1;
}

/* ---------- mobile nav toggle (top bar) ---------- */

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  width: 40px;
  height: 40px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--accent-text);
  cursor: pointer;
  transition: border-color var(--fast) ease,
    background-color var(--fast) ease;
}

.nav-toggle:hover {
  border-color: var(--accent-text);
  background-color: rgba(255, 140, 0, 0.08);
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}

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

.content h1 {
  font-family: var(--font-heading);
  font-size: var(--h1);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 0 0 1.25rem;
}

.content h2 {
  font-family: var(--font-heading);
  font-size: var(--h2);
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--white);
  margin: 2.5rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.content h3 {
  font-family: var(--font-heading);
  font-size: var(--h3);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--accent-text);
  margin: 1.75rem 0 0.5rem;
}

.content h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--white);
  margin: 1.25rem 0 0.4rem;
}

.content p {
  margin: 0 0 1rem;
}

.content ul,
.content ol {
  margin: 0 0 1rem 1.25rem;
  padding: 0;
}

.content li {
  margin: 0.25rem 0;
}

.content li > ul,
.content li > ol {
  margin-bottom: 0;
}

.content strong {
  color: var(--white);
  font-weight: 600;
}

.content em {
  color: var(--white);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

blockquote {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--primary);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-muted);
}

blockquote p {
  margin: 0;
}

blockquote strong {
  color: var(--accent-text);
}

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

code {
  font-family: var(--font-body);
  font-size: 0.9em;
}

:not(pre) > code {
  background: var(--surface);
  color: var(--code-inline);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.35em;
  letter-spacing: -0.02em;
}

pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 0 0 1.25rem;
  overflow-x: auto;
  /* Tight rows so dense ASCII pipeline/tree diagrams stay compact */
  line-height: 1.35;
  font-size: 0.9rem;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
  font-size: inherit;
}

/* Rouge token colors — contrast-tuned for void (dark) and eggshell (light) */
.highlight .k,
.highlight .kc,
.highlight .kd,
.highlight .kn,
.highlight .kr,
.highlight .kt,
.highlight .nt {
  color: var(--tok-keyword);
}

.highlight .s,
.highlight .s1,
.highlight .s2,
.highlight .sb,
.highlight .sc,
.highlight .sd,
.highlight .se,
.highlight .sh,
.highlight .si,
.highlight .sr,
.highlight .ss,
.highlight .na,
.highlight .nb {
  color: var(--tok-string);
}

.highlight .c,
.highlight .c1,
.highlight .cm,
.highlight .cs {
  color: var(--tok-comment);
  font-style: italic;
}

.highlight .m,
.highlight .mi,
.highlight .mf,
.highlight .mh,
.highlight .mn,
.highlight .mo {
  color: var(--tok-number);
}

.highlight .nf,
.highlight .nc,
.highlight .nx {
  color: var(--tok-ident);
}

.highlight .o,
.highlight .ow,
.highlight .p,
.highlight .bp,
.highlight .no {
  color: var(--text);
}

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

.content table {
  /* Wide tables scroll horizontally on narrow (mobile) viewports instead
   * of overflowing the page: block-display lets the table grow to its
   * min-content width, and overflow-x makes that growth scrollable. */
  display: block;
  border-collapse: collapse;
  width: 100%;
  max-width: 100%;
  margin: 0 0 1.25rem;
  font-size: var(--caption);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.content th,
.content td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.content th {
  background: var(--surface);
  color: var(--white);
  font-weight: 600;
  white-space: nowrap;
}

.content tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.02);
}

/* ---------- prev / next ---------- */

.prev-next {
  display: flex;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.pn-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
  padding: 0.75rem 1rem;
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--fast) ease;
}

.pn-link:hover {
  border-color: var(--accent-text);
  text-shadow: none;
}

.pn-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.pn-title {
  color: var(--white);
  font-weight: 500;
}

.pn-next {
  margin-left: auto;
  text-align: right;
}

/* ---------- scrollbars ---------- */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

/* ---------- utilities ---------- */

.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;
}

/* ---------- responsive: top bar on phones ---------- */

@media (max-width: 900px) {
  .layout {
    flex-direction: column;
  }

  .sidebar {
    width: auto;
    height: auto;
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1rem;
    padding: 0.75rem 1rem;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .brand {
    flex: 1 1 auto;
    min-width: 0;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav {
    order: 10;
    width: 100%;
    display: none;
    flex-direction: column;
    gap: 0.2rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

  .content {
    padding: 1.5rem 1.25rem 3rem;
  }

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

  .prev-next {
    flex-direction: column;
  }

  .pn-next {
    margin-left: 0;
    text-align: left;
  }
}

/* ---------- light mode (system-adaptive, WCAG-contrast-safe) ---------- */

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --void: var(--light-bg);
    --surface: #ffffff;
    --text: var(--text-dark);
    --text-muted: #4b4332;
    --white: var(--text-dark);
    --border: #ddd2bd;
    --accent-text: #9a4d00;
    --tok-keyword: #9a4d00;
    --tok-string: #9a4d00;
    --tok-number: #5b4b9e;
  }

  .content tr:nth-child(even) td {
    background: rgba(31, 27, 20, 0.03);
  }

  .nav-link:hover,
  .nav-link.active {
    background-color: rgba(255, 140, 0, 0.14);
  }

  .nav-toggle:hover {
    background-color: rgba(255, 140, 0, 0.14);
  }
}

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

.site-footer {
  padding: 14px 24px 18px;
  border-top: 1px solid var(--border);
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--text-muted);
  max-width: 1100px;
  margin: 0 auto;
}

.site-footer a {
  color: var(--accent-text);
}

/* ---------- heading copy-links ---------- */

.content h1[id],
.content h2[id],
.content h3[id],
.content h4[id],
.content h5[id],
.content h6[id] {
  position: relative;
  cursor: pointer;
}

.content h1[id]::before,
.content h2[id]::before,
.content h3[id]::before,
.content h4[id]::before,
.content h5[id]::before,
.content h6[id]::before {
  content: "¶";
  position: absolute;
  right: 100%;
  padding-right: 0.45em;
  color: var(--accent-text);
  opacity: 0;
  visibility: hidden;
  user-select: none;
  transition: opacity var(--fast) ease, visibility var(--fast) ease;
}

.content h1[id]:hover::before,
.content h2[id]:hover::before,
.content h3[id]:hover::before,
.content h4[id]:hover::before,
.content h5[id]:hover::before,
.content h6[id]:hover::before {
  opacity: 0.7;
  visibility: visible;
}

.copy-toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  transform: translateX(-50%) translateY(0.5rem);
  background: var(--surface);
  color: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem 0.9rem;
  font-family: var(--font-body);
  font-size: var(--caption);
  letter-spacing: -0.02em;
  opacity: 0;
  pointer-events: none;
  z-index: 50;
  transition: opacity var(--normal) ease, transform var(--normal) ease;
}

.copy-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- reduced motion ---------- */

@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;
  }
}