/* =============================================================================
   agentkit — visual identity over mkdocs-material
   -----------------------------------------------------------------------------
   Layered top-down so overrides read in the order the browser applies them:
     1. Palette (light + dark)         6. Nav (sidebar, tabs, TOC, search)
     2. Typography                     7. Announcement bar
     3. Hero (landing only)            8. Admonitions + tables
     4. Card grid                      9. Mermaid diagrams
     5. Code blocks                   10. Small dark-mode audits
   All of this is additive — disabling this stylesheet must return the site
   to a working (if plain) mkdocs-material.
   ============================================================================= */


/* -----------------------------------------------------------------------------
   1. Palette
   Slate primary + warm amber accent. Overrides mkdocs-material's Material Design
   primary/accent color families. Every custom color has a dark counterpart.
   ----------------------------------------------------------------------------- */

:root {
  --md-code-font: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Brand tokens — reused by hero, cards, announce, mermaid, etc. */
  --rio-slate-950: #0c0e13;
  --rio-slate-900: #131922;
  --rio-slate-800: #1e2a3a;
  --rio-slate-700: #2b3a4e;
  --rio-slate-500: #64748b;
  --rio-slate-300: #94a3b8;
  --rio-slate-100: #e2e8f0;
  --rio-slate-50:  #f1f5f9;

  --rio-amber-700: #b45309;
  --rio-amber-600: #d97706;
  --rio-amber-500: #f59e0b;
  --rio-amber-400: #fbbf24;
  --rio-amber-100: #fef3c7;

  --rio-paper: #fafaf9;
  --rio-paper-2: #f5f4f2;
  --rio-ink:   #0c0e13;
  --rio-ink-2: #131922;

  --rio-radius: 8px;
  --rio-radius-sm: 6px;
  --rio-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06),
                   0 1px 3px rgba(15, 23, 42, 0.05);
  --rio-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08),
                   0 2px 4px rgba(15, 23, 42, 0.05);
  --rio-shadow-dark-sm: 0 1px 2px rgba(0, 0, 0, 0.4),
                        0 0 0 1px rgba(255, 255, 255, 0.03);
  --rio-shadow-dark-md: 0 6px 18px rgba(0, 0, 0, 0.55),
                        0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Light mode ---------------------------------------------------------------- */
[data-md-color-scheme="default"] {
  --md-primary-fg-color:         var(--rio-slate-800);
  --md-primary-fg-color--light:  var(--rio-slate-700);
  --md-primary-fg-color--dark:   var(--rio-ink);
  --md-primary-bg-color:         var(--rio-paper);
  --md-primary-bg-color--light:  rgba(250, 250, 249, 0.72);

  --md-accent-fg-color:          var(--rio-amber-600);
  --md-accent-fg-color--transparent: rgba(217, 119, 6, 0.08);
  --md-accent-bg-color:          #ffffff;
  --md-accent-bg-color--light:   rgba(255, 255, 255, 0.72);

  --md-default-bg-color:         var(--rio-paper);
  --md-default-fg-color:         #14181f;
  --md-default-fg-color--light:  #4b5565;
  --md-default-fg-color--lighter:#6b7480;
  --md-default-fg-color--lightest: rgba(20, 24, 31, 0.07);

  --md-typeset-color:            #14181f;
  --md-typeset-a-color:          var(--rio-amber-700);

  --md-code-fg-color:            #14181f;
  --md-code-bg-color:            #f2ecdd80;         /* warm parchment tint */
  --md-code-hl-color--light:     rgba(245, 158, 11, 0.18);

  /* Admonitions (kept semantic, retinted toward the amber/slate family) */
  --md-admonition-fg-color:      var(--md-default-fg-color);
  --md-admonition-bg-color:      var(--rio-paper);

  /* mermaid parity — see block 9 */
  --md-mermaid-node-bg-color:    #eef2f7;
  --md-mermaid-node-fg-color:    var(--rio-slate-800);
  --md-mermaid-edge-color:       var(--rio-amber-600);
  --md-mermaid-label-bg-color:   var(--rio-paper);
  --md-mermaid-label-fg-color:   var(--rio-slate-800);
}

/* Dark mode ----------------------------------------------------------------- */
[data-md-color-scheme="slate"] {
  --md-hue: 220;

  --md-primary-fg-color:         #7c8ba1;
  --md-primary-fg-color--light:  #98a4b8;
  --md-primary-fg-color--dark:   #0c0e13;
  --md-primary-bg-color:         #e8ecf1;
  --md-primary-bg-color--light:  rgba(232, 236, 241, 0.72);

  --md-accent-fg-color:          var(--rio-amber-400);
  --md-accent-fg-color--transparent: rgba(251, 191, 36, 0.12);
  --md-accent-bg-color:          #0c0e13;
  --md-accent-bg-color--light:   rgba(12, 14, 19, 0.72);

  --md-default-bg-color:         var(--rio-ink);
  --md-default-fg-color:         #e2e8f0;
  --md-default-fg-color--light:  #94a3b8;
  --md-default-fg-color--lighter:#64748b;
  --md-default-fg-color--lightest: rgba(226, 232, 240, 0.06);

  --md-typeset-color:            #e2e8f0;
  --md-typeset-a-color:          var(--rio-amber-400);

  --md-code-fg-color:            #e2e8f0;
  --md-code-bg-color:            #131922;
  --md-code-hl-color--light:     rgba(251, 191, 36, 0.16);

  --md-admonition-fg-color:      var(--md-default-fg-color);
  --md-admonition-bg-color:      #131922;

  --md-footer-bg-color:          #0a0c11;
  --md-footer-bg-color--dark:    #05070a;

  --md-mermaid-node-bg-color:    #182028;
  --md-mermaid-node-fg-color:    #e8ecf1;
  --md-mermaid-edge-color:       var(--rio-amber-400);
  --md-mermaid-label-bg-color:   var(--rio-ink);
  --md-mermaid-label-fg-color:   #e8ecf1;
}

/* Header + tab bar sit on the deep slate in both modes (looks like one tool
   rather than a mode-switching palette). */
.md-header,
.md-tabs {
  background-color: var(--rio-slate-900);
  color: #e8ecf1;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
[data-md-color-scheme="slate"] .md-header,
[data-md-color-scheme="slate"] .md-tabs {
  background-color: #05070a;
}
.md-header__title,
.md-header__topic > .md-ellipsis,
.md-search__input,
.md-search__input::placeholder {
  color: #e8ecf1;
}

/* Selection */
::selection {
  background: rgba(245, 158, 11, 0.28);
  color: inherit;
}


/* -----------------------------------------------------------------------------
   2. Typography
   Tighter modular scale than Material's default. Fluid h1/h2 for mobile.
   Inter for prose, JetBrains Mono for code (both loaded by mkdocs-material).
   ----------------------------------------------------------------------------- */

:root {
  --md-text-font-family: "Inter", ui-sans-serif, system-ui, -apple-system,
                         "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  /* Base is 16px; tuning it here cascades to all rem-based Material tokens. */
  --md-typeset-font-size: 0.82rem;
}

.md-typeset {
  font-feature-settings: "cv02", "cv03", "cv04", "cv11", "ss01";
  line-height: 1.65;
}

.md-typeset p {
  margin: 0 0 1.05em;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  font-family: var(--md-text-font-family);
  color: var(--md-default-fg-color);
  letter-spacing: -0.012em;
  font-weight: 650;
}

.md-typeset h1 {
  font-size: clamp(2.1rem, 1.6rem + 1.8vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 1.1rem;
}

.md-typeset h2 {
  font-size: clamp(1.4rem, 1.1rem + 1.1vw, 1.65rem);
  line-height: 1.25;
  margin-top: 2.6rem;
  margin-bottom: 0.9rem;
  padding-top: 0.4rem;
  border-top: 1px solid var(--md-default-fg-color--lightest);
  letter-spacing: -0.015em;
}
.md-typeset h2:first-of-type {
  border-top: 0;
  padding-top: 0;
  margin-top: 1.6rem;
}

.md-typeset h3 {
  font-size: 1.12rem;
  line-height: 1.35;
  margin-top: 1.9rem;
  margin-bottom: 0.6rem;
}

.md-typeset h4 {
  font-size: 0.98rem;
  line-height: 1.4;
  margin-top: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--md-default-fg-color--light);
  text-transform: none;
  font-weight: 600;
}

.md-typeset a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 120ms ease, border-color 120ms ease;
}
.md-typeset a:hover {
  border-bottom-color: currentColor;
}

.md-typeset strong { font-weight: 650; }
.md-typeset em { font-style: italic; }


/* -----------------------------------------------------------------------------
   3. Hero (landing only)
   Full-bleed banner rendered by overrides/main.html {% block hero %}.
   Two drifting blobs + a static grid pattern read as motion without demanding
   attention. Tuned to work equally well against both palettes.
   ----------------------------------------------------------------------------- */

.rio-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: #e8ecf1;
  background-color: var(--rio-slate-900);
  padding: clamp(3rem, 6vw, 5.5rem) 0 clamp(3.2rem, 6vw, 5rem);
}
[data-md-color-scheme="default"] .rio-hero {
  background-color: var(--rio-slate-800);
}

.rio-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(245, 158, 11, 0.05), transparent 60%),
    linear-gradient(180deg, var(--rio-slate-900) 0%, var(--rio-ink) 100%);
}

.rio-hero__grid {
  position: absolute;
  inset: 0;
  opacity: 0.6;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse at 50% 40%, #000 45%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, #000 45%, transparent 78%);
}

.rio-hero__blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  will-change: transform;
}
.rio-hero__blob--a {
  width: 480px; height: 480px;
  top: -140px; left: -120px;
  background: radial-gradient(circle at 30% 30%, #f59e0b 0%, transparent 60%);
  animation: rio-hero-drift-a 22s ease-in-out infinite alternate;
}
.rio-hero__blob--b {
  width: 520px; height: 520px;
  bottom: -180px; right: -160px;
  background: radial-gradient(circle at 60% 60%, #3b82f6 0%, transparent 60%);
  opacity: 0.30;
  animation: rio-hero-drift-b 28s ease-in-out infinite alternate;
}
.rio-hero__blob--c {
  width: 320px; height: 320px;
  top: 30%; right: 15%;
  background: radial-gradient(circle at 50% 50%, #d97706 0%, transparent 65%);
  opacity: 0.22;
  animation: rio-hero-drift-c 34s ease-in-out infinite alternate;
}

@keyframes rio-hero-drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(60px, 40px, 0) scale(1.08); }
}
@keyframes rio-hero-drift-b {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(-80px, -50px, 0) scale(1.05); }
}
@keyframes rio-hero-drift-c {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(-40px, 60px, 0) scale(0.95); }
}
@media (prefers-reduced-motion: reduce) {
  .rio-hero__blob { animation: none !important; }
}

.rio-hero__inner {
  position: relative;
  max-width: 61rem;
  margin: 0 auto;
  padding-inline: 1rem;
}

.rio-hero__content {
  max-width: 44rem;
}

.rio-hero__eyebrow {
  font-family: var(--md-code-font);
  font-size: 0.78rem;
  color: var(--rio-amber-400);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
  opacity: 0.9;
}

.rio-hero__title {
  font-family: var(--md-text-font-family);
  font-size: clamp(3rem, 2rem + 5.2vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: 750;
  color: #ffffff;
  margin: 0 0 0.7rem;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.15);
}

.rio-hero__tagline {
  font-size: clamp(1.05rem, 0.9rem + 0.5vw, 1.3rem);
  line-height: 1.45;
  color: #c9d2df;
  margin: 0 0 1.6rem;
  max-width: 34rem;
  font-weight: 400;
}

.rio-hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.55rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1.7rem;
}
.rio-hero__pills li {
  font-size: 0.76rem;
  font-family: var(--md-code-font);
  color: #c9d2df;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  letter-spacing: 0.005em;
}
.rio-hero__pills li code {
  background: transparent;
  color: var(--rio-amber-400);
  padding: 0;
  font-size: inherit;
  border: 0;
}

.rio-hero__install {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.55rem 0.55rem 0.9rem;
  background: rgba(12, 14, 19, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--rio-radius);
  font-family: var(--md-code-font);
  font-size: 0.88rem;
  margin: 0 0 1.6rem;
  max-width: 100%;
  backdrop-filter: blur(6px);
}
.rio-hero__prompt {
  color: var(--rio-amber-400);
  user-select: none;
  font-weight: 500;
}
.rio-hero__install code {
  background: transparent;
  color: #eef2f7;
  padding: 0;
  font-size: inherit;
  border: 0;
  white-space: nowrap;
}
.rio-hero__copy {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: #c9d2df;
  border-radius: var(--rio-radius-sm);
  padding: 0.32rem 0.65rem;
  font: inherit;
  font-size: 0.76rem;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease, border-color 120ms ease;
}
.rio-hero__copy:hover {
  background: rgba(245, 158, 11, 0.14);
  color: var(--rio-amber-400);
  border-color: rgba(245, 158, 11, 0.35);
}
.rio-hero__copy.is-copied {
  background: rgba(34, 197, 94, 0.16);
  color: #86efac;
  border-color: rgba(34, 197, 94, 0.35);
}

.rio-hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}
.rio-hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.72rem 1.25rem;
  border-radius: var(--rio-radius);
  font-size: 0.92rem;
  font-weight: 550;
  line-height: 1;
  text-decoration: none;
  transition: transform 150ms ease, background 150ms ease,
              color 150ms ease, border-color 150ms ease,
              box-shadow 150ms ease;
  border: 1px solid transparent;
}
.rio-hero__cta--primary {
  background: var(--rio-amber-500);
  color: #1a1206;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.2) inset,
              0 4px 14px rgba(245, 158, 11, 0.28);
}
.rio-hero__cta--primary:hover {
  background: var(--rio-amber-400);
  transform: translateY(-1px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.28) inset,
              0 6px 18px rgba(245, 158, 11, 0.36);
}
.rio-hero__cta--secondary {
  color: #eef2f7;
  border-color: rgba(255, 255, 255, 0.22);
  background: transparent;
}
.rio-hero__cta--secondary:hover {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.05);
}
.rio-hero__cta-arrow {
  display: inline-block;
  transition: transform 150ms ease;
}
.rio-hero__cta:hover .rio-hero__cta-arrow {
  transform: translateX(3px);
}

/* Push the first article's top padding a bit tighter under the hero. */
.rio-hero + .md-container .md-main__inner,
.md-container:has(.rio-hero) .md-content__inner {
  /* No-op on browsers without :has; the default padding is fine. */
}

@media (max-width: 60em) {
  .rio-hero { padding: 2.4rem 0 2.6rem; }
  .rio-hero__pills { gap: 0.3rem 0.4rem; }
  .rio-hero__install {
    display: flex;
    width: 100%;
    max-width: 30rem;
  }
  .rio-hero__install code { white-space: normal; word-break: break-word; }
}


/* -----------------------------------------------------------------------------
   4. Card grid — the landing's "four themes" and "where to next" panels.
   ----------------------------------------------------------------------------- */

.md-typeset .grid.cards > ul,
.md-typeset .grid.cards {
  gap: 1rem;
}

.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > .card {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: var(--rio-radius);
  padding: 1.1rem 1.15rem;
  background: var(--md-default-bg-color);
  box-shadow: var(--rio-shadow-sm);
  transition: box-shadow 160ms ease, border-color 160ms ease,
              transform 160ms ease;
}
[data-md-color-scheme="slate"] .md-typeset .grid.cards > ul > li,
[data-md-color-scheme="slate"] .md-typeset .grid.cards > .card {
  background: #131922;
  box-shadow: var(--rio-shadow-dark-sm);
  border-color: rgba(255, 255, 255, 0.06);
}

.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid.cards > .card:hover {
  border-color: var(--rio-amber-500);
  box-shadow: var(--rio-shadow-md);
  transform: translateY(-1px);
}
[data-md-color-scheme="slate"] .md-typeset .grid.cards > ul > li:hover,
[data-md-color-scheme="slate"] .md-typeset .grid.cards > .card:hover {
  border-color: var(--rio-amber-400);
  box-shadow: var(--rio-shadow-dark-md);
}

.md-typeset .grid.cards > ul > li > hr {
  margin: 0.6rem -0.15rem;
  border: 0;
  border-top: 1px solid var(--md-default-fg-color--lightest);
}

.md-typeset .grid.cards > ul > li > p:first-of-type strong,
.md-typeset .grid.cards > ul > li > p:first-of-type {
  font-size: 0.98rem;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--md-default-fg-color);
}

.md-typeset .grid.cards > ul > li > p:last-of-type a {
  color: var(--md-accent-fg-color);
  font-weight: 550;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border-bottom: 0;
}
.md-typeset .grid.cards > ul > li > p:last-of-type a svg {
  transition: transform 150ms ease;
}
.md-typeset .grid.cards > ul > li:hover > p:last-of-type a svg {
  transform: translateX(4px);
}


/* -----------------------------------------------------------------------------
   5. Code blocks
   Chip-styled inline code, palette-matched scrollbars, subtle language label,
   hover-highlight on individual lines.
   ----------------------------------------------------------------------------- */

.md-typeset pre > code,
.md-typeset .highlight code {
  font-size: 0.78rem;
  /* Code wants tighter leading than prose — 1.5 keeps blank lines from
     ballooning while still readable. Prose stays at 1.65 via .md-typeset. */
  line-height: 1.5;
}

.md-typeset .highlight,
.md-typeset pre {
  border-radius: var(--rio-radius);
  /* Slightly tighter than 1.1em so consecutive code blocks + prose don't
     feel over-airy on dense pages (cheatsheet, migration guides). */
  margin: 0.9em 0;
}

/* Proper container padding + guaranteed horizontal scroll on narrow
   viewports. Material's default `.md-typeset pre > code` gets 1.05em of
   inner padding; we set it explicitly so the code isn't kissing the border
   AND long lines scroll instead of clip. */
.md-typeset pre > code,
.md-typeset .highlight > pre > code {
  padding: 0.9em 1.05em;
  overflow-x: auto;
  display: block;
}

/* Line-numbered blocks use a table layout — target the .code cell directly
   so the linenos gutter stays put and only the code column scrolls. */
.md-typeset .highlighttable td.code > .highlight > pre > code {
  padding: 0.9em 1.05em;
  overflow-x: auto;
}

.md-typeset .highlight {
  border: 1px solid var(--md-default-fg-color--lightest);
}
[data-md-color-scheme="slate"] .md-typeset .highlight {
  border-color: rgba(255, 255, 255, 0.05);
}

/* Inline code — warm chip, contrasts clearly with prose in both modes. */
.md-typeset code {
  padding: 0.12em 0.4em;
  border-radius: 4px;
  font-size: 0.86em;
  background: rgba(245, 158, 11, 0.08);
  color: #92400e;
  border: 1px solid rgba(245, 158, 11, 0.14);
}
[data-md-color-scheme="slate"] .md-typeset code {
  background: rgba(251, 191, 36, 0.08);
  color: var(--rio-amber-400);
  border-color: rgba(251, 191, 36, 0.18);
}
/* Inside code fences, don't chip the code again. */
.md-typeset pre code,
.md-typeset .highlight code {
  background: transparent;
  color: inherit;
  padding: 0;
  border: 0;
}
/* Inside headings / links, don't chip. */
.md-typeset h1 code,
.md-typeset h2 code,
.md-typeset h3 code,
.md-typeset h4 code,
.md-typeset a code {
  background: transparent;
  border: 0;
  color: inherit;
  padding: 0.05em 0.25em;
}

/* Language label (mkdocs-material puts it as .filename). */
.md-typeset .highlight span.filename {
  background: rgba(30, 42, 58, 0.06);
  color: var(--md-default-fg-color--light);
  font-family: var(--md-code-font);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  padding: 0.3rem 0.8rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  border-radius: var(--rio-radius) var(--rio-radius) 0 0;
}
[data-md-color-scheme="slate"] .md-typeset .highlight span.filename {
  background: rgba(255, 255, 255, 0.04);
  color: var(--md-default-fg-color--light);
  border-bottom-color: rgba(255, 255, 255, 0.05);
}

/* Line numbers gutter — muted, spaced. */
.md-typeset .highlighttable .linenos {
  background: transparent;
  color: var(--md-default-fg-color--lightest);
  border-right: 1px solid var(--md-default-fg-color--lightest);
  padding-right: 0.6rem;
  user-select: none;
}

/* Subtle hover on individual lines when line numbers are on. */
.md-typeset .highlight .hll,
.md-typeset .highlight [id^="__span"]:hover {
  background: rgba(245, 158, 11, 0.06);
}
[data-md-color-scheme="slate"] .md-typeset .highlight [id^="__span"]:hover {
  background: rgba(251, 191, 36, 0.05);
}

/* Custom, thin, palette-matched scrollbars on code blocks. */
.md-typeset pre,
.md-typeset .highlight code,
.md-typeset .highlighttable {
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 163, 184, 0.35) transparent;
}
.md-typeset pre::-webkit-scrollbar,
.md-typeset .highlight code::-webkit-scrollbar {
  height: 8px;
  width: 8px;
}
.md-typeset pre::-webkit-scrollbar-thumb,
.md-typeset .highlight code::-webkit-scrollbar-thumb {
  background: rgba(148, 163, 184, 0.35);
  border-radius: 999px;
}
.md-typeset pre::-webkit-scrollbar-thumb:hover,
.md-typeset .highlight code::-webkit-scrollbar-thumb:hover {
  background: rgba(148, 163, 184, 0.55);
}

/* Copy button hover picks up the accent. */
.md-clipboard:hover {
  color: var(--md-accent-fg-color) !important;
}


/* -----------------------------------------------------------------------------
   6. Nav — left sidebar, tabs, right TOC, and search input.
   ----------------------------------------------------------------------------- */

.md-nav {
  font-size: 0.78rem;
}
.md-nav__title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
}
.md-nav__item {
  padding: 0.06rem 0;
}
.md-nav__link {
  color: var(--md-default-fg-color--light);
  transition: color 120ms ease, border-color 120ms ease;
  border-left: 2px solid transparent;
  padding-left: 0.55rem;
  margin-left: -0.55rem;
}
.md-nav__link:hover {
  color: var(--md-accent-fg-color);
}
.md-nav__item .md-nav__link--active,
.md-nav__link--active,
.md-nav__link.md-nav__link--active > code {
  color: var(--md-accent-fg-color);
  font-weight: 600;
  border-left-color: var(--md-accent-fg-color);
}

/* Section groupings in the left rail read louder. */
.md-nav--primary > .md-nav__list > .md-nav__item > .md-nav__link,
.md-nav--primary > .md-nav__list > .md-nav__item > label.md-nav__link {
  font-weight: 600;
  color: var(--md-default-fg-color);
  letter-spacing: -0.005em;
}

/* Right-hand TOC */
.md-nav--secondary .md-nav__title {
  color: var(--md-default-fg-color--light);
}
.md-nav--secondary .md-nav__link--active {
  color: var(--md-accent-fg-color);
  border-left-color: var(--md-accent-fg-color);
}

/* Search input — palette-matched */
.md-search__form {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  transition: background 120ms ease;
}
.md-search__form:hover,
[data-md-toggle="search"]:checked ~ .md-header .md-search__form {
  background: rgba(255, 255, 255, 0.14);
}
.md-search__input {
  color: #eef2f7;
}
.md-search__input::placeholder {
  color: rgba(238, 242, 247, 0.6);
}
.md-search__icon {
  color: rgba(238, 242, 247, 0.75);
}

/* Header repo/counters muted */
.md-header__source .md-source {
  color: #e8ecf1;
}
.md-source__fact {
  color: rgba(232, 236, 241, 0.7);
}


/* -----------------------------------------------------------------------------
   7. Announcement bar
   Muted amber strip, single line on desktop. Dismissible via mkdocs-material's
   built-in mechanism when `announce.dismiss` is in theme.features.
   ----------------------------------------------------------------------------- */

.md-banner {
  background: linear-gradient(90deg,
    rgba(245, 158, 11, 0.14) 0%,
    rgba(245, 158, 11, 0.08) 100%);
  color: var(--rio-slate-800);
  border-bottom: 1px solid rgba(245, 158, 11, 0.28);
  font-size: 0.8rem;
}
[data-md-color-scheme="slate"] .md-banner {
  background: linear-gradient(90deg,
    rgba(251, 191, 36, 0.10) 0%,
    rgba(251, 191, 36, 0.05) 100%);
  color: #e8ecf1;
  border-bottom-color: rgba(251, 191, 36, 0.22);
}
.md-banner__inner {
  padding: 0.55rem 1rem;
  line-height: 1.3;
}
.rio-announce {
  display: inline-flex;
  align-items: baseline;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.rio-announce__tag {
  font-family: var(--md-code-font);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: var(--rio-amber-500);
  color: #1a1206;
}
[data-md-color-scheme="slate"] .rio-announce__tag {
  background: var(--rio-amber-400);
  color: #1a1206;
}
.rio-announce__body a {
  color: inherit;
  border-bottom: 1px solid currentColor;
  font-weight: 550;
}
.rio-announce__body a:hover {
  color: var(--rio-amber-700);
}
[data-md-color-scheme="slate"] .rio-announce__body a:hover {
  color: var(--rio-amber-400);
}
.md-banner__button {
  color: currentColor;
  opacity: 0.7;
  transition: opacity 120ms ease;
}
.md-banner__button:hover { opacity: 1; }


/* -----------------------------------------------------------------------------
   8. Admonitions + tables
   Retinted to the amber/slate family; kept semantic colors so notes/warnings
   still read at a glance.
   ----------------------------------------------------------------------------- */

.md-typeset .admonition,
.md-typeset details {
  border-radius: var(--rio-radius-sm);
  border-left-width: 3px;
  box-shadow: none;
  font-size: 0.82rem;
}
.md-typeset .admonition-title,
.md-typeset summary {
  font-weight: 600;
  letter-spacing: -0.005em;
}

.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-left-color: #10b981;
}
.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-left-color: var(--rio-amber-500);
}
.md-typeset .admonition.danger,
.md-typeset details.danger {
  border-left-color: #ef4444;
}
.md-typeset .admonition.note,
.md-typeset details.note {
  border-left-color: var(--rio-slate-500);
}

/* Tables — retire the heavy default border. */
.md-typeset table:not([class]) {
  font-size: 0.82rem;
  border-radius: var(--rio-radius-sm);
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  border: 1px solid var(--md-default-fg-color--lightest);
}
.md-typeset table:not([class]) th {
  background: rgba(30, 42, 58, 0.04);
  font-weight: 650;
  letter-spacing: 0.005em;
}
[data-md-color-scheme="slate"] .md-typeset table:not([class]) th {
  background: rgba(255, 255, 255, 0.03);
}
.md-typeset table:not([class]) td,
.md-typeset table:not([class]) th {
  border: 0;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}
.md-typeset table:not([class]) tr:last-child td {
  border-bottom: 0;
}

/* Tab labels (pymdownx tabbed) pick up the accent when active. */
.md-typeset .tabbed-labels > label {
  font-size: 0.78rem;
  font-weight: 550;
  color: var(--md-default-fg-color--light);
}
.md-typeset .tabbed-set > input:checked + label {
  color: var(--md-accent-fg-color);
  border-bottom-color: var(--md-accent-fg-color);
}


/* -----------------------------------------------------------------------------
   9. Mermaid — pick up palette via CSS variables. Additional theming happens
   via window.mermaidConfig in overrides/main.html {% block extrahead %}.
   ----------------------------------------------------------------------------- */

.md-typeset .mermaid {
  text-align: center;
}
.md-typeset .mermaid .node rect,
.md-typeset .mermaid .node polygon,
.md-typeset .mermaid .node circle {
  stroke: var(--md-default-fg-color--lighter);
}
.md-typeset .mermaid .edgeLabel {
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
}
.md-typeset .mermaid .flowchart-link {
  stroke: var(--rio-amber-600);
  stroke-width: 1.2;
}
[data-md-color-scheme="slate"] .md-typeset .mermaid .flowchart-link {
  stroke: var(--rio-amber-400);
}


/* -----------------------------------------------------------------------------
   10. Small dark-mode + a11y audit fixes
   ----------------------------------------------------------------------------- */

/* Focus rings on interactive brand elements — always visible. */
.rio-hero__cta:focus-visible,
.rio-hero__copy:focus-visible,
.md-nav__link:focus-visible,
.md-typeset a:focus-visible {
  outline: 2px solid var(--rio-amber-500);
  outline-offset: 2px;
  border-radius: 4px;
}
[data-md-color-scheme="slate"] .rio-hero__cta:focus-visible,
[data-md-color-scheme="slate"] .rio-hero__copy:focus-visible,
[data-md-color-scheme="slate"] .md-nav__link:focus-visible,
[data-md-color-scheme="slate"] .md-typeset a:focus-visible {
  outline-color: var(--rio-amber-400);
}

/* Footer nav */
.md-footer-meta {
  background: #05070a;
}
.md-footer {
  background: #0a0c11;
}

/* "Back to top" pill */
.md-top {
  background: var(--rio-slate-800);
  color: #e8ecf1;
  box-shadow: var(--rio-shadow-md);
}
.md-top:hover {
  background: var(--rio-amber-500);
  color: #1a1206;
}