/* DoubleZero brand identity (Media Kit 2026 + doublezero.xyz).
   Display: Reckless · Body: Suisse Intl · Mono: Suisse Intl Mono
   Palette: black/white primary; spectrum accents only as thin fiber edges.
*/
@font-face {
  font-family: "Reckless";
  src: url("../fonts/RecklessStandardM-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Reckless";
  src: url("../fonts/RecklessStandardM-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Reckless";
  src: url("../fonts/RecklessStandardM-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Reckless";
  src: url("../fonts/RecklessStandardM-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/SuisseIntl-Light.ttf") format("truetype");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/SuisseIntl-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/SuisseIntl-Medium.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/SuisseIntl-SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl";
  src: url("../fonts/SuisseIntl-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Suisse Intl Mono";
  src: url("../fonts/SuisseIntl-Mono.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  /* doublezero.xyz + logo spectrum */
  --dz-black: #08090a;
  --dz-white: #fafafa;
  --dz-grey: #62666d;
  --dz-grey-light: #e2e2e2;
  --dz-green: #21b906;
  --dz-green-soft: color-mix(in srgb, #21b906 10%, #fafafa);
  --dz-teal: #07c8c9;
  --dz-blue: #1b63ff;
  --dz-yellow: #ffdc78;
  --dz-red: #d92308;
  --dz-orange: #ff5a1f;
  --dz-fiber: linear-gradient(
    90deg,
    var(--dz-teal) 0%,
    var(--dz-blue) 28%,
    #9b7bff 48%,
    var(--dz-yellow) 68%,
    var(--dz-orange) 85%,
    var(--dz-red) 100%
  );
  --dz-font-display: "Reckless", "Times New Roman", Georgia, serif;
  --dz-font-body: "Suisse Intl", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --dz-font-mono: "Suisse Intl Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --dz-surface: #08090a;
  --dz-surface-raised: #121314;
  --dz-surface-code: #18191b;
  --dz-text: #e2e2e2;
  --dz-text-strong: #fafafa;
  --dz-text-muted: #62666d;
  /* Header chrome matches doublezero.xyz: same surface as page + hairline */
  --dz-header-bg: var(--dz-surface);
  --dz-header-border: #1f1f20;
  /* doublezero.xyz: 64px mobile, 67px desktop (≥ xl / 1280px) */
  --dz-header-height: 64px;
  --md-text-font: "Suisse Intl";
  --md-code-font: "Suisse Intl Mono";
}

@media screen and (min-width: 1280px) {
  :root {
    --dz-header-height: 67px;
  }
}

:root > * {
  --md-accent-fg-color: var(--dz-grey-light);
  --md-accent-fg-color--transparent: color-mix(in srgb, var(--dz-grey-light) 12%, transparent);
  --md-typeset-a-color: var(--dz-grey-light);
}

/* Light mode: clean paper + dark type (doublezero.xyz .light) */
[data-md-color-scheme="default"] {
  --md-default-bg-color: #fafafa;
  --md-default-bg-color--light: #fafafa;
  --md-default-bg-color--lighter: #f0f0f0;
  --md-default-bg-color--lightest: #e2e2e2;
  --md-default-fg-color: rgba(8, 9, 10, 0.92);
  --md-default-fg-color--light: rgba(8, 9, 10, 0.72);
  --md-default-fg-color--lighter: rgba(8, 9, 10, 0.54);
  --md-default-fg-color--lightest: rgba(8, 9, 10, 0.14);
  --md-typeset-color: rgba(8, 9, 10, 0.9);
  --md-typeset-a-color: #08090a;
  --md-code-bg-color: #efefef;
  --md-code-fg-color: #08090a;
  /* Keep Material primary in sync so the header never falls back to grey */
  --md-primary-fg-color: #fafafa;
  --md-primary-fg-color--light: #fafafa;
  --md-primary-fg-color--dark: #fafafa;
  --md-primary-bg-color: #08090a;
  --md-accent-fg-color: #08090a;
  --dz-header-bg: #fafafa;
  --dz-header-border: #e2e2e2;
  --dz-green-soft: color-mix(in srgb, #21b906 8%, #fafafa);
}

/* Dark mode: DoubleZero black canvas (doublezero.xyz .dark) */
[data-md-color-scheme="slate"] {
  --md-default-bg-color: var(--dz-surface);
  --md-default-bg-color--light: #0c0d0e;
  --md-default-bg-color--lighter: var(--dz-surface-raised);
  --md-default-bg-color--lightest: #222426;
  --md-default-fg-color: var(--dz-text-strong);
  --md-default-fg-color--light: var(--dz-grey-light);
  --md-default-fg-color--lighter: var(--dz-grey);
  --md-default-fg-color--lightest: rgba(255, 255, 255, 0.12);
  --md-typeset-color: var(--dz-text);
  --md-typeset-a-color: var(--dz-grey-light);
  --md-code-bg-color: var(--dz-surface-code);
  --md-code-fg-color: #f0f0f0;
  --md-footer-bg-color: #000000;
  --md-footer-bg-color--dark: #000000;
  --md-primary-fg-color: #08090a;
  --md-primary-fg-color--light: #08090a;
  --md-primary-fg-color--dark: #08090a;
  --md-primary-bg-color: #fafafa;
  --md-accent-fg-color: var(--dz-white);
  --dz-header-bg: #08090a;
  --dz-header-border: #1f1f20;
  --dz-green-soft: color-mix(in srgb, #21b906 14%, #08090a);
}

body {
  font-family: var(--dz-font-body);
  -webkit-font-smoothing: antialiased;
}

code,
pre,
.md-typeset code,
.md-typeset pre,
.md-code__content,
.dz-btn-rect,
.runbook-assist-btn {
  font-family: var(--dz-font-mono);
}

/* Suisse body · Reckless headings only */
.md-typeset {
  font-size: 0.84rem;
  line-height: 1.75;
  font-family: var(--dz-font-body);
  font-weight: 400;
  color: var(--md-typeset-color);
}

.md-typeset p,
.md-typeset li,
.md-typeset td,
.md-typeset th {
  font-family: var(--dz-font-body);
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  font-family: var(--dz-font-display);
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--md-default-fg-color);
  font-weight: 500;
}

.md-typeset > h1 {
  font-size: 2rem;
  font-weight: 500;
  margin-bottom: 0.75em;
}

.md-typeset h2 {
  font-weight: 500;
  margin-top: 1.75em;
  padding-bottom: 0.35em;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

/* Header: same surface as page + hairline (doublezero.xyz header chrome) */
.md-header,
.md-header--shadow {
  background: var(--dz-header-bg) !important;
  color: var(--dz-text-strong);
  border-bottom: 1px solid var(--dz-header-border);
  box-shadow: none !important;
  height: var(--dz-header-height);
  box-sizing: border-box;
}

.md-header__inner {
  height: 100%;
  min-height: var(--dz-header-height);
  box-sizing: border-box;
  display: flex;
  align-items: center;
}

.md-header__title {
  height: auto;
  line-height: 1.2;
}

[data-md-color-scheme="default"] .md-header,
[data-md-color-scheme="default"] .md-header--shadow {
  color: var(--dz-black);
}

.md-header .md-header__button,
.md-header .md-header__topic,
.md-header .md-source,
.md-header .md-tabs__link {
  color: inherit;
}

[data-md-color-scheme="slate"] .md-header .md-header__button:hover,
[data-md-color-scheme="slate"] .md-header .md-header__button:focus {
  opacity: 1;
  color: var(--dz-white);
}

[data-md-color-scheme="default"] .md-header .md-header__button:hover,
[data-md-color-scheme="default"] .md-header .md-header__button:focus {
  opacity: 1;
  color: var(--dz-black);
}

/* Links + nav accents */
.md-typeset a {
  color: var(--md-typeset-a-color);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

.md-typeset a:hover {
  color: var(--dz-orange);
}

[data-md-color-scheme="default"] .md-typeset a:hover {
  color: var(--dz-orange);
}

.md-nav__link:hover,
.md-nav__link:focus,
.md-nav__item .md-nav__link--active,
.md-nav__link--active {
  color: var(--md-default-fg-color);
}

.md-nav__link--active {
  transition: color 0.15s ease;
}

/* Orange square bullets (brand lists) */
.md-typeset ul:not(.task-list):not(.md-nav__list) {
  list-style: none;
  padding-left: 0;
}

.md-typeset ul:not(.task-list):not(.md-nav__list) > li {
  position: relative;
  padding-left: 1.15em;
  margin-left: 0.15em;
}

.md-typeset ul:not(.task-list):not(.md-nav__list) > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.38em;
  height: 0.38em;
  background: var(--dz-orange);
}

/* Admonitions: sharp thin rectangles */
.md-typeset .admonition,
.md-typeset details {
  border-radius: 0 !important;
  border-width: 1px !important;
  box-shadow: none !important;
}

/* Informational cards (info / note / tip) — brand green */
.md-typeset .admonition.info,
.md-typeset details.info,
.md-typeset .admonition.note,
.md-typeset details.note,
.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-color: var(--dz-green);
}

.md-typeset .info > .admonition-title,
.md-typeset .info > summary,
.md-typeset .note > .admonition-title,
.md-typeset .note > summary,
.md-typeset .tip > .admonition-title,
.md-typeset .tip > summary {
  background-color: var(--dz-green-soft);
  border-radius: 0;
  color: var(--md-default-fg-color);
}

.md-typeset .info > .admonition-title::before,
.md-typeset .info > summary::before,
.md-typeset .note > .admonition-title::before,
.md-typeset .note > summary::before,
.md-typeset .tip > .admonition-title::before,
.md-typeset .tip > summary::before {
  background-color: var(--dz-green);
}

.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-color: var(--dz-orange);
}

.md-typeset .warning > .admonition-title,
.md-typeset .warning > summary {
  background-color: color-mix(in srgb, var(--dz-orange) 10%, transparent);
}

.md-typeset .warning > .admonition-title::before,
.md-typeset .warning > summary::before {
  background-color: var(--dz-orange);
}

/* Green pill badge (brand) */
.dz-badge-green {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--dz-green);
  border-radius: 999px;
  background: var(--dz-green-soft);
  color: var(--dz-green);
  font-family: var(--dz-font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none !important;
  line-height: 1;
}

.dz-badge-green::before {
  content: "";
  width: 0.4em;
  height: 0.4em;
  background: var(--dz-green);
  flex-shrink: 0;
}

/* CTA links — growing underline on hover (same recipe as Support / doublezero.xyz) */
.dz-cta-rainbow,
a.dz-cta-rainbow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--md-default-fg-color) !important;
  -webkit-text-fill-color: var(--md-default-fg-color);
  background-color: transparent;
  background-image: linear-gradient(currentColor, currentColor);
  background-position: left 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  font-family: var(--dz-font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  text-decoration: none !important;
  line-height: 1.3;
  transition: background-size 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.dz-cta-rainbow::after {
  content: "→";
  color: var(--md-default-fg-color);
  -webkit-text-fill-color: var(--md-default-fg-color);
  font-weight: 400;
}

.dz-cta-rainbow:hover,
.dz-cta-rainbow:focus-visible,
a.dz-cta-rainbow:hover,
a.dz-cta-rainbow:focus-visible {
  background-size: 100% 1px;
  color: var(--md-default-fg-color) !important;
  -webkit-text-fill-color: var(--md-default-fg-color);
}

/* Side nav + TOC: growing underline instead of rainbow text */
.md-sidebar .md-nav__link .md-ellipsis,
.md-sidebar .toc-page-top,
.dz-rainbow-hover {
  display: inline-block;
  max-width: 100%;
  vertical-align: bottom;
  background-image: linear-gradient(currentColor, currentColor);
  background-position: left 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  transition: background-size 200ms cubic-bezier(0.4, 0, 0.2, 1), color 0.15s ease;
}

.md-sidebar .md-nav__link:hover .md-ellipsis,
.md-sidebar .md-nav__link:focus-visible .md-ellipsis,
.md-sidebar .toc-page-top:hover,
.md-sidebar .toc-page-top:focus-visible,
.dz-rainbow-hover:hover,
.dz-rainbow-hover:focus-visible {
  background-size: 100% 1px;
  background-color: transparent !important;
  text-shadow: none !important;
  color: var(--md-default-fg-color);
  -webkit-text-fill-color: var(--md-default-fg-color);
}

@media (prefers-reduced-motion: reduce) {
  .dz-cta-rainbow,
  a.dz-cta-rainbow,
  .md-sidebar .md-nav__link .md-ellipsis,
  .md-sidebar .toc-page-top,
  .dz-rainbow-hover {
    transition: none;
  }
}

/* Sharp mono rectangle buttons */
.dz-btn-rect,
.md-typeset .md-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--md-default-fg-color) !important;
  border-radius: 0 !important;
  background: var(--md-default-fg-color);
  color: var(--md-default-bg-color) !important;
  font-family: var(--dz-font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none !important;
  line-height: 1.2;
  box-shadow: none !important;
}

.dz-btn-rect:hover,
.md-typeset .md-button:hover {
  background: transparent;
  color: var(--md-default-fg-color) !important;
}

.dz-btn-rect--ghost,
.md-typeset .md-button--primary {
  background: transparent;
  color: var(--md-default-fg-color) !important;
}

.dz-btn-rect--ghost:hover,
.md-typeset .md-button--primary:hover {
  background: var(--md-default-fg-color);
  color: var(--md-default-bg-color) !important;
}

/* Wider layout: push sidebars toward the viewport edges and give content more room */
.md-grid {
  max-width: none;
}

.md-main__inner.md-grid {
  max-width: none;
  margin-inline: 0.75rem;
}

/* Header width: match doublezero.xyz (full-bleed + max-md:px-3 / min-md:px-8) */
.md-header__inner.md-grid {
  max-width: none;
  width: 100%;
  box-sizing: border-box;
  margin-inline: 0;
  padding-inline: 12px; /* max-md:px-3 */
  padding-block: 0;
}

@media screen and (min-width: 768px) {
  .md-header__inner.md-grid {
    padding-inline: 32px; /* min-md:px-8 */
  }
}

@media screen and (min-width: 76.25em) {
  .md-main__inner {
    padding-left: 0.25rem;
    padding-right: 0.25rem;
  }

  .md-content {
    max-width: none;
  }

  .md-sidebar--primary {
    width: 14rem;
  }

  .md-sidebar--secondary {
    width: 13.5rem;
  }

  .md-content__inner {
    margin: 0 1.25rem;
    max-width: none;
  }
}

/* Header control order: logo / language (left) → title → search → support → theme */
.md-header__inner {
  display: flex;
  align-items: center;
}

.md-header__button.md-logo {
  order: 1 !important;
}

.md-header__button[for="__drawer"] {
  order: 2 !important;
}

.md-header__option:has(.md-select) {
  order: 3 !important;
  display: inline-flex;
  align-items: center;
  align-self: center;
  margin-inline-start: 0.85rem;
  height: 100%;
}

.md-header__title {
  order: 10 !important;
  flex: 1 1 auto;
}

.md-header__button[for="__search"] {
  order: 50 !important;
}

.md-search {
  order: 51 !important;
}

.header-support-btn {
  order: 80 !important;
}

.md-header__option[data-md-component="palette"] {
  order: 999 !important;
}

.md-header__source {
  order: 1000 !important;
}

/* Theme toggle: DoubleZero compact button (from doublezero.xyz CompactThemeToggle) */
.md-header__option[data-md-component="palette"].dz2-palette-host {
  display: inline-flex;
  align-items: center;
  margin: 0.15rem 0.25rem;
}

.md-header__option[data-md-component="palette"].dz2-palette-host > input.md-option,
.md-header__option[data-md-component="palette"].dz2-palette-host > label.md-header__button {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.dz2-theme-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 9999px;
  background: color-mix(in srgb, var(--dz-white) 14%, transparent);
  color: var(--dz-white);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.dz2-theme-btn:hover,
.dz2-theme-btn:focus-visible {
  background: color-mix(in srgb, var(--dz-white) 28%, transparent);
  color: var(--dz-white);
  outline: none;
}

[data-md-color-scheme="default"] .dz2-theme-btn {
  background: color-mix(in srgb, var(--dz-black) 10%, transparent);
  color: var(--dz-black);
}

[data-md-color-scheme="default"] .dz2-theme-btn:hover,
[data-md-color-scheme="default"] .dz2-theme-btn:focus-visible {
  background: var(--dz-black);
  color: var(--dz-white);
}

.dz2-theme-btn svg {
  display: block;
  width: 1rem;
  height: 1rem;
}

/* Hover tooltip like doublezero.xyz — right-align so it isn't clipped at viewport edge */
.dz2-theme-btn__tip {
  position: absolute;
  top: calc(100% + 0.45rem);
  right: 0;
  left: auto;
  transform: none;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.55rem;
  border-radius: 0.35rem;
  background: #111213;
  color: #f5f6f6;
  font-family: var(--dz-font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.12s ease, visibility 0.12s ease;
}

.md-header,
.md-header__inner,
.md-header__option[data-md-component="palette"],
.md-header__option[data-md-component="palette"].dz2-palette-host {
  overflow: visible;
}

.dz2-theme-btn:hover .dz2-theme-btn__tip,
.dz2-theme-btn:focus-visible .dz2-theme-btn__tip {
  opacity: 1;
  visibility: visible;
}

/* Drawer / phone: tip has no room — hide it (aria-label still covers a11y) */
.mobile-drawer-controls .dz2-theme-btn__tip {
  display: none !important;
}

@media screen and (max-width: 40em) {
  .dz2-theme-btn__tip {
    display: none !important;
  }
}

.dz2-theme-btn__kbd {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  color: color-mix(in srgb, #f5f6f6 75%, transparent);
}

.dz2-theme-btn__kbd kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.15rem;
  padding: 0.1rem 0.28rem;
  border: 1px solid color-mix(in srgb, #f5f6f6 18%, transparent);
  border-radius: 0.25rem;
  background: color-mix(in srgb, #f5f6f6 10%, transparent);
  font: inherit;
  line-height: 1.2;
}

@media (prefers-reduced-motion: reduce) {
  .dz2-theme-btn,
  .dz2-theme-btn__tip {
    transition: none;
  }
}

/* Legacy Material palette icon button styles (kept inert) */
.md-header__option[data-md-component="palette"] > .md-header__button[hidden] {
  display: none !important;
}

/* Support header button */
/* Support header button — inverted vs theme; underline grows L→R on hover
   (same recipe as doublezero.xyz .header-cta-link / .dz2-footer-link) */
.header-support-btn {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  height: 2.1rem;
  margin: 0.15rem 0.35rem;
  padding: 0 0.85rem !important;
  border: 1px solid var(--dz-white);
  border-radius: 0;
  background: var(--dz-white);
  color: var(--dz-black) !important;
  opacity: 1 !important;
  font-family: var(--dz-font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none !important;
  line-height: 1;
}

.header-support-btn,
.header-support-btn:hover,
.header-support-btn:focus,
.header-support-btn:focus-visible {
  color: var(--dz-black) !important;
  background: var(--dz-white);
  border-color: var(--dz-white);
  text-decoration: none !important;
  outline: none !important;
}

.header-support-btn__text {
  position: relative;
  white-space: nowrap;
}

.header-support-btn__text::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 1px;
  width: 0;
  background: currentColor;
  transition: width 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.header-support-btn:hover .header-support-btn__text::after,
.header-support-btn:focus .header-support-btn__text::after,
.header-support-btn:focus-visible .header-support-btn__text::after {
  width: 100%;
}

/* Light theme: inverted — dark button */
[data-md-color-scheme="default"] .header-support-btn,
[data-md-color-scheme="default"] .header-support-btn:hover,
[data-md-color-scheme="default"] .header-support-btn:focus,
[data-md-color-scheme="default"] .header-support-btn:focus-visible {
  color: var(--dz-white) !important;
  background: var(--dz-black);
  border-color: var(--dz-black);
  text-decoration: none !important;
}

@media (prefers-reduced-motion: reduce) {
  .header-support-btn__text::after {
    transition: none;
  }
}

/* Language selector: discrete text control (name + chevron) */
.md-header__option .md-select {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 100%;
}

.md-header__option .md-select > .md-header__language-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  gap: 0.25rem;
  width: auto !important;
  min-width: 0;
  height: auto !important;
  min-height: 0;
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0;
  background: transparent !important;
  color: color-mix(in srgb, var(--dz-white) 72%, transparent) !important;
  opacity: 1 !important;
  font-family: var(--dz-font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: none;
  line-height: 1;
  cursor: pointer;
  box-shadow: none !important;
  transition: color 0.15s ease;
}

.md-header__option .md-select > .md-header__language-btn:hover,
.md-header__option .md-select > .md-header__language-btn:focus {
  color: var(--dz-white) !important;
  background: transparent !important;
  outline: none !important;
  box-shadow: none !important;
}

[data-md-color-scheme="default"] .md-header__option .md-select > .md-header__language-btn {
  color: color-mix(in srgb, var(--dz-black) 62%, transparent) !important;
}

[data-md-color-scheme="default"] .md-header__option .md-select > .md-header__language-btn:hover,
[data-md-color-scheme="default"] .md-header__option .md-select > .md-header__language-btn:focus {
  color: var(--dz-black) !important;
  background: transparent !important;
}

.md-header__language-label {
  white-space: nowrap;
}

.md-header__language-chevron {
  font-size: 0.5rem;
  line-height: 1;
  opacity: 0.75;
}

.md-header__option .md-select > .md-header__button svg {
  display: none;
}

.md-select__inner {
  min-width: 0;
  width: max-content;
  max-width: 10rem;
  top: calc(100% + 0.15rem);
  margin-top: 0;
  padding: 0.2rem;
  border: 1px solid color-mix(in srgb, var(--md-default-fg-color) 16%, transparent);
  border-radius: 0.45rem;
  background-color: var(--md-default-bg-color);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
  overflow-y: auto;
  /* Closed dropdown must not capture hover in the space below the icon */
  pointer-events: none;
}

/* Invisible bridge so you can move from icon → menu without a dead gap */
.md-select__inner::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -0.45rem;
  height: 0.45rem;
}

.md-select:focus-within .md-select__inner,
.md-select:hover .md-select__inner {
  max-height: min(20rem, 70vh);
  opacity: 1;
  transform: translate3d(-50%, 0, 0);
  pointer-events: auto;
}

.md-select__list {
  margin: 0;
  padding: 0;
}

.md-select__item {
  margin: 0;
}

.md-select__link {
  display: block;
  margin: 0;
  padding: 0.28rem 0.55rem;
  border-radius: 0.28rem;
  color: var(--md-default-fg-color);
  font-size: 0.72rem;
  line-height: 1.25;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color 0.12s ease, color 0.12s ease;
}

.md-select__link:hover,
.md-select__link:focus {
  background-color: color-mix(in srgb, var(--md-accent-fg-color) 14%, transparent);
  color: var(--md-accent-fg-color);
}

.md-select__link.is-active {
  color: var(--md-accent-fg-color);
  font-weight: 600;
  background-color: color-mix(in srgb, var(--md-accent-fg-color) 10%, transparent);
  padding-inline-end: 1.35rem;
}

.md-select__link.is-active::after {
  content: "✓";
  float: right;
  margin-inline-start: 0.45rem;
  opacity: 0.9;
}

/* 50px buffer at bottom of content when fully scrolled, before footer */
.md-content__inner {
  padding-bottom: 50px;
}

/* Page toolbar styles - text-based links like Pyth docs */
.page-toolbar-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--md-default-bg-color);
  border-top: 1px solid var(--md-default-fg-color--lightest);
  z-index: 100;
  padding: 0;
}

.page-toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  color: var(--md-default-fg-color);
  max-width: 100%;
  margin: 0 auto;
}

.page-toolbar-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--md-default-fg-color);
  -webkit-text-fill-color: var(--md-default-fg-color);
  text-decoration: none;
  cursor: pointer;
}

.page-toolbar-link__text {
  display: inline-block;
}

/* Fiber spectrum sweep — same geometry/timing as doublezero.xyz nav links */
@keyframes dz-fiber-sweep {
  from {
    background-position-x: 100%;
  }
  to {
    background-position-x: 0%;
  }
}

.page-toolbar-link:hover .page-toolbar-link__text,
.page-toolbar-link:focus-visible .page-toolbar-link__text {
  background-image: linear-gradient(
    90deg,
    var(--md-default-fg-color) 0%,
    var(--md-default-fg-color) 26%,
    var(--dz-teal) 29%,
    var(--dz-blue) 43%,
    var(--dz-yellow) 57%,
    var(--dz-red) 71%,
    var(--md-default-fg-color) 74%,
    var(--md-default-fg-color) 100%
  );
  background-size: 400% 100%;
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  animation: dz-fiber-sweep 700ms ease-out forwards;
}

@media (prefers-reduced-motion: reduce) {
  .page-toolbar-link:hover .page-toolbar-link__text,
  .page-toolbar-link:focus-visible .page-toolbar-link__text {
    background: none;
    background-clip: border-box;
    -webkit-background-clip: border-box;
    -webkit-text-fill-color: var(--md-default-fg-color);
    color: var(--md-default-fg-color);
    animation: none;
  }
}

.page-toolbar-link:hover,
.page-toolbar-link:focus-visible {
  text-decoration: none;
  opacity: 1;
}

.page-toolbar-link.copied,
.page-toolbar-link.copied .page-toolbar-link__text {
  color: var(--dz-green);
  -webkit-text-fill-color: var(--dz-green);
  font-weight: 500;
  background: none;
  animation: none;
}

.page-toolbar-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  vertical-align: middle;
  opacity: 0.9;
  color: currentColor;
}

.page-toolbar-link svg.page-toolbar-icon {
  display: block;
  overflow: visible;
}

[data-md-color-scheme="slate"] .page-toolbar-favicon {
  filter: brightness(0) invert(1);
}

.page-toolbar-separator {
  color: var(--md-default-fg-color--light);
  user-select: none;
}

@media screen and (max-width: 768px) {
  .page-toolbar {
    flex-wrap: wrap;
  }
}

/* Runbook assist — copy left, actions right on one row */
.runbook-assist--compact {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.65rem 1rem;
  margin: 0.25rem 0 1.15rem;
  padding: 0.7rem 0;
  border: none;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 0;
  background: transparent;
}

.runbook-assist--compact .runbook-assist-mark {
  flex: 0 0 auto;
  width: 0.45rem;
  height: 0.45rem;
  background: var(--dz-green);
  align-self: center;
}

.runbook-assist--compact .runbook-assist-icon {
  display: none;
}

.runbook-assist--compact .runbook-assist-copy {
  flex: 1 1 auto;
  margin: 0 !important;
  padding: 0 !important;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--md-default-fg-color--light);
  font-family: var(--dz-font-body);
  min-width: 0;
}

.runbook-assist--compact .runbook-assist-copy strong {
  color: var(--md-default-fg-color);
  font-weight: 600;
}

.runbook-assist--compact .runbook-assist-actions {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
  margin: 0 0 0 auto !important;
  padding: 0 !important;
  flex: 0 0 auto;
}

.runbook-assist-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.85rem;
  border-radius: 0;
  border: 1px solid var(--md-default-fg-color);
  background: var(--md-default-fg-color);
  color: var(--md-default-bg-color) !important;
  font-family: var(--dz-font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none !important;
  cursor: pointer;
  line-height: 1.2;
  white-space: nowrap;
}

.runbook-assist-btn:hover {
  background: transparent;
  color: var(--md-default-fg-color) !important;
}

.runbook-assist-btn.copied {
  background: var(--dz-green);
  border-color: var(--dz-green);
  color: #fff !important;
}

/* Open runbook: always looks like a link; underline grows on hover */
a.runbook-assist-btn.dz-cta-rainbow {
  padding: 0;
  border: none;
  background-color: transparent;
  background-image: linear-gradient(currentColor, currentColor);
  background-position: left 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  color: var(--dz-green) !important;
  -webkit-text-fill-color: var(--dz-green);
  text-decoration: none !important;
}

a.runbook-assist-btn.dz-cta-rainbow:hover,
a.runbook-assist-btn.dz-cta-rainbow:focus-visible {
  background-size: 100% 1px;
  color: var(--dz-green) !important;
  -webkit-text-fill-color: var(--dz-green);
  opacity: 1;
}

a.runbook-assist-btn.dz-cta-rainbow::after {
  content: "→";
  margin-left: 0.35rem;
  color: var(--dz-green);
  -webkit-text-fill-color: var(--dz-green);
  text-decoration: none;
}

a.runbook-assist-btn.dz-cta-rainbow:hover::after,
a.runbook-assist-btn.dz-cta-rainbow:focus-visible::after {
  color: var(--dz-green);
  -webkit-text-fill-color: var(--dz-green);
}

.runbook-assist-btn-secondary {
  background: transparent;
  color: var(--md-default-fg-color) !important;
}

.runbook-assist-btn-secondary:hover {
  background: var(--md-default-fg-color);
  color: var(--md-default-bg-color) !important;
}

button.runbook-assist-btn {
  font-family: var(--dz-font-mono);
}

/* Narrow: stack copy, keep actions on one row aligned end */
@media screen and (max-width: 40em) {
  .runbook-assist--compact {
    flex-wrap: wrap;
  }

  .runbook-assist--compact .runbook-assist-copy {
    flex: 1 1 calc(100% - 1.5rem);
  }

  .runbook-assist--compact .runbook-assist-actions {
    flex: 1 1 100%;
    justify-content: flex-end;
    margin-left: 0 !important;
    padding-left: 1.1rem !important;
  }
}

/* Legacy full admonition assist (if any remain) */
.runbook-assist.admonition {
  margin: 0.75rem 0 1.25rem;
  padding: 0.85rem 1rem 1rem !important;
}

.runbook-assist.admonition .admonition-title {
  margin-top: 0;
}

.runbook-assist.admonition > p {
  margin-left: 0;
  margin-right: 0;
}

/* Header: DoubleZero wordmark only (swap dark/light by scheme)
   Flush to header padding like doublezero.xyz — no Material button chrome. */
.md-header__button.md-logo {
  display: inline-flex;
  align-items: center;
  align-self: center;
  margin: 0 !important;
  margin-inline-end: 0.75rem !important;
  padding: 0 !important;
  height: auto;
  line-height: 0;
}

.md-header__button.md-logo img,
.md-nav__button.md-logo img {
  height: 24px; /* doublezero.xyz desktop: h-6 */
  width: auto;
  display: block;
}

.header-logo-wordmark--light {
  display: none !important;
}

[data-md-color-scheme="default"] .header-logo-wordmark--dark {
  display: none !important;
}

[data-md-color-scheme="default"] .header-logo-wordmark--light {
  display: inline-block !important;
}

/* Keep title as flex spacer so controls stay right; hide redundant brand text */
.md-header__title {
  flex: 1 1 auto;
  visibility: hidden;
  pointer-events: none;
}

/* Right TOC: "On this page" title → scroll to top */
.md-sidebar--secondary .md-nav__title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 0.6rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: none;
  color: var(--md-default-fg-color);
  box-shadow: none;
  background: transparent;
  opacity: 1;
}

.md-sidebar--secondary .md-nav__title .md-nav__icon {
  margin: 0;
  width: 0.9rem;
  height: 0.9rem;
  color: var(--md-default-fg-color);
  fill: currentColor;
  opacity: 1;
}

.md-sidebar--secondary .toc-page-top {
  color: var(--md-default-fg-color);
  font-weight: 700;
  text-decoration: none;
}

/* Scrollspy TOC — active section tracks as you scroll (Solana / Helius style) */
.md-sidebar--secondary .md-nav--secondary > .md-nav__list {
  position: relative;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--md-default-fg-color--lightest);
}

.md-sidebar--secondary .md-nav--secondary .md-nav__item {
  padding: 0;
}

.md-sidebar--secondary .md-nav--secondary .md-nav__link {
  margin-top: 0;
  padding: 0.4rem 0.75rem;
  color: var(--md-default-fg-color--light);
  font-size: 0.7rem;
  font-weight: 400;
  line-height: 1.35;
  border-left: 2px solid transparent;
  margin-left: -1px;
  border-radius: 0;
  transition: color 0.15s ease, border-color 0.15s ease, text-shadow 0.15s ease;
}

.md-sidebar--secondary .md-nav--secondary .md-nav__link:hover,
.md-sidebar--secondary .md-nav--secondary .md-nav__link:focus {
  background-color: transparent;
  font-weight: 400;
}

/* Active: color + rail — no layout shift */
.md-sidebar--secondary .md-nav--secondary .md-nav__link--active,
.md-sidebar--secondary .md-nav--secondary .md-nav__link--active:focus,
.md-sidebar--secondary .md-nav--secondary .md-nav__item--active > .md-nav__link {
  color: var(--md-default-fg-color);
  -webkit-text-fill-color: var(--md-default-fg-color);
  font-weight: 400 !important;
  border-left-color: var(--md-default-fg-color);
  background-color: transparent;
  text-shadow: 0.4px 0 0 currentColor, -0.4px 0 0 currentColor;
}

.md-sidebar--secondary .md-nav--secondary .md-nav__link--active:hover,
.md-sidebar--secondary .md-nav--secondary .md-nav__link--active:focus-visible {
  text-shadow: none !important;
}

/* Primary nav: stable metrics; underline via shared hover rule above */
.md-sidebar--primary .md-nav__link {
  font-weight: 400 !important;
  transition: color 0.15s ease;
}

.md-sidebar--primary .md-nav__link--active,
.md-sidebar--primary .md-nav__item--active > .md-nav__link {
  font-weight: 400 !important;
  text-shadow: 0.35px 0 0 currentColor, -0.35px 0 0 currentColor;
  color: var(--md-default-fg-color);
}

.md-sidebar--primary .md-nav__link--active:hover,
.md-sidebar--primary .md-nav__link--active:focus-visible,
.md-sidebar--primary .md-nav__item--active > .md-nav__link:hover,
.md-sidebar--primary .md-nav__item--active > .md-nav__link:focus-visible {
  text-shadow: none !important;
}

/* Nested TOC levels stay indented under the scrollspy rail */
.md-sidebar--secondary .md-nav--secondary .md-nav .md-nav__list {
  border-left: none;
  margin: 0;
  padding: 0;
}

.md-sidebar--secondary .md-nav--secondary .md-nav .md-nav__link {
  padding-left: 1.25rem;
}

/* Extra air between a nested subtitle and the next top-level section (e.g. 3→4) */
.md-sidebar--secondary .md-nav--secondary > .md-nav__list > .md-nav__item > .md-nav {
  margin-bottom: 0.2rem;
}

.md-sidebar--secondary .md-nav--secondary > .md-nav__list > .md-nav__item:has(> .md-nav) + .md-nav__item > .md-nav__link {
  padding-top: 0.45rem;
}

/* Keep scrollspy / in-page anchors aligned under the sticky header */
.md-typeset :is(h1, h2, h3, h4, h5, h6) {
  scroll-margin-top: 3.5rem;
}

/* Last-updated line at the bottom of each page */
.md-source-file .page-updated {
  color: var(--md-default-fg-color--light);
  font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   Search: circular header button → centered modal (Helius / QuickNode style)
   -------------------------------------------------------------------------- */

/* Always show a round magnifying-glass control in the header */
.md-header__button[for="__search"] {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  margin: 0.15rem 0.25rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  box-sizing: border-box;
  background-color: color-mix(in srgb, currentColor 18%, transparent);
  outline: none !important;
  box-shadow: none !important;
  transition: background-color 0.15s ease;
}

.md-header__button[for="__search"]:hover,
.md-header__button[for="__search"]:focus {
  border: none;
  background-color: color-mix(in srgb, currentColor 48%, transparent);
  outline: none !important;
  box-shadow: none !important;
}

.md-header__button[for="__search"] svg {
  width: 1.05rem;
  height: 1.05rem;
}

/* Desktop+: don't embed the long search field in the header — use a modal */
@media screen and (min-width: 60em) {
  .md-search {
    position: static;
    padding: 0;
  }

  .md-search__overlay {
    border-radius: 0 !important;
    background-color: rgba(0, 0, 0, 0.55) !important;
  }

  .md-search__inner {
    position: fixed !important;
    top: 4.75rem !important;
    left: 50% !important;
    float: none !important;
    z-index: 5;
    width: min(42rem, calc(100vw - 2.5rem)) !important;
    height: auto !important;
    max-height: none !important;
    padding: 0 !important;
    margin: 0 !important;
    /* Must be visible: results are position:absolute and were being clipped */
    overflow: visible !important;
    opacity: 0 !important;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-50%) translateY(-0.25rem) !important;
    border-radius: 0.75rem;
    background-color: transparent;
    box-shadow: none;
    transition:
      opacity 0.18s ease,
      transform 0.18s ease,
      visibility 0.18s !important;
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__inner {
    opacity: 1 !important;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0) !important;
    width: min(42rem, calc(100vw - 2.5rem)) !important;
  }

  .md-search__form {
    display: flex !important;
    align-items: center !important;
    height: 3rem !important;
    border-radius: 0.75rem !important;
    background-color: var(--md-default-bg-color) !important;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45) !important;
  }

  /* Open search: one cohesive card (form top + output bottom, both rounded) */
  [data-md-toggle="search"]:checked ~ .md-header .md-search__form {
    border-radius: 0.75rem 0.75rem 0 0 !important;
    box-shadow: none !important;
  }

  .md-search__form:hover {
    background-color: var(--md-default-bg-color) !important;
  }

  .md-search__input {
    font-size: 0.95rem !important;
    line-height: 3rem !important;
    color: var(--md-default-fg-color) !important;
    /* Room for the back/close icon on the left + comfortable gap before typed text */
    padding-inline-start: 3rem !important;
  }

  .md-search__input::placeholder {
    color: var(--md-default-fg-color--light) !important;
    line-height: 3rem;
  }

  .md-search__icon[for="__search"] {
    top: 50% !important;
    inset-inline-start: 0.75rem !important;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    width: 1.4rem !important;
    height: 1.4rem !important;
    margin: 0;
    transform: translateY(-50%);
    color: var(--md-default-fg-color--light) !important;
    pointer-events: auto;
  }

  .md-search__icon[for="__search"] svg {
    width: 1.2rem;
    height: 1.2rem;
    display: block;
  }

  .md-search__options {
    top: 50% !important;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
  }

  /* Prefer close/back affordance inside the modal */
  .md-search__icon[for="__search"] svg:first-child {
    display: none;
  }

  .md-search__icon[for="__search"] svg:last-child {
    display: block;
  }

  .md-search__output {
    position: absolute !important;
    top: 3rem !important;
    left: 0;
    right: 0;
    width: 100% !important;
    border-radius: 0 0 0.75rem 0.75rem !important;
    opacity: 0;
    overflow: hidden !important;
    background-color: var(--md-default-bg-color);
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__output {
    opacity: 1 !important;
  }

  .md-search__scrollwrap {
    width: 100% !important;
    max-width: none !important;
    max-height: 0;
    border-radius: 0 0 0.75rem 0.75rem;
    overflow: hidden;
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__scrollwrap {
    max-height: min(55vh, calc(100vh - 8rem)) !important;
    min-height: 2.75rem;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  /* Leave room for the result icon (Material places it absolutely on the left) */
  .md-search-result__meta {
    padding-inline-start: 1rem !important;
  }

  .md-search-result__article,
  .md-search-result__more > summary > div,
  .md-search-result__link {
    padding-inline-start: 2.5rem !important;
  }

  .md-search-result__icon {
    display: block;
    inset-inline-start: 0.55rem;
  }

  /* Keep shared card radius when results are showing */
  [data-md-toggle="search"]:checked ~ .md-header .md-search__form:has(+ .md-search__output .md-search-result__item) {
    border-radius: 0.75rem 0.75rem 0 0 !important;
    box-shadow: none !important;
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__form:has(+ .md-search__output .md-search-result__item) + .md-search__output {
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  }
}

/* Lock page scroll while search is open (desktop + mobile) */
html:has([data-md-toggle="search"]:checked),
html:has([data-md-toggle="search"]:checked) body {
  overflow: hidden !important;
}

/* Smaller screens: keep Material’s modal, but float a centered card */
@media screen and (max-width: 59.9375em) {
  [data-md-toggle="search"]:checked ~ .md-header .md-search__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 5.5rem 1rem 1rem;
    background: transparent;
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__form,
  [data-md-toggle="search"]:checked ~ .md-header .md-search__output {
    width: min(40rem, 100%);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__form {
    border-radius: 0.75rem 0.75rem 0 0;
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__output {
    position: relative;
    top: 0;
    bottom: auto;
    max-height: min(55vh, calc(100vh - 8rem));
    border-radius: 0 0 0.75rem 0.75rem;
    overflow-y: auto !important;
    overscroll-behavior: contain;
  }

  [data-md-toggle="search"]:checked ~ .md-header .md-search__scrollwrap {
    max-height: none !important;
    overflow: visible !important;
  }
}

/* --------------------------------------------------------------------------
   Header / drawer: keep controls visible until they would crush (~40em).
   Material still shows the nav hamburger below ~76em — just don't steal
   search/lang/support/theme until phone widths.
   -------------------------------------------------------------------------- */
.mobile-drawer-controls {
  display: none;
}

/* Tablet: nav drawer toggle appears beside logo — keep logo from covering it */
@media screen and (max-width: 76.1875em) {
  .md-header__button.md-logo {
    flex: 0 1 auto;
    max-width: calc(100% - 3.25rem);
    min-width: 0;
    overflow: hidden;
  }

  .md-header__button.md-logo img {
    max-height: 24px;
  }

  .md-header__button[for="__drawer"] {
    flex-shrink: 0;
    position: relative;
    z-index: 2;
  }
}

/* Narrow phones: match doublezero.xyz mobile wordmark (h-5 = 20px) */
@media screen and (max-width: 40em) {
  .md-header__button.md-logo {
    max-width: calc(100% - 3rem);
  }

  .md-header__button.md-logo .header-logo-wordmark,
  .md-header__button.md-logo img {
    height: 20px;
    max-width: min(8.75rem, calc(100vw - 6.25rem));
    object-fit: contain;
    object-position: left center;
  }
}

@media screen and (max-width: 22.5em) {
  .md-header__button.md-logo .header-logo-wordmark,
  .md-header__button.md-logo img {
    height: 18px;
    max-width: calc(100vw - 5.75rem);
  }
}

/* Phone: move chrome controls into the sandwich drawer */
@media screen and (max-width: 40em) {
  .md-header__inner > .md-header__option,
  .md-header__inner > .header-support-btn,
  .md-header__inner > .md-header__button[for="__search"] {
    display: none !important;
  }

  /* Search UI stays in DOM for the modal, but takes no header space */
  .md-header__inner > .md-search {
    position: absolute;
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
    overflow: visible;
    pointer-events: none;
  }

  .md-header__inner > .md-search .md-search__inner {
    pointer-events: auto;
  }

  /* Logo left, hamburger right */
  .md-header__button.md-logo {
    order: 1;
    flex: 1 1 auto;
    max-width: calc(100% - 3rem);
    min-width: 0;
    overflow: hidden;
  }

  .md-header__title {
    display: none;
  }

  .md-header__button[for="__drawer"] {
    order: 2;
    flex: 0 0 auto;
    width: 2.4rem;
    margin-inline-start: 0.35rem;
  }

  /* Drawer control panel — Search / Support + compact language/theme row */
  .mobile-drawer-controls {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    margin: 0.35rem 0.8rem 0.75rem;
    padding: 0 0 0.85rem;
    border-bottom: 1px solid color-mix(in srgb, var(--md-default-fg-color) 12%, transparent);
    border-radius: 0;
    background: transparent;
  }

  .mobile-drawer-controls__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    width: 100%;
    box-sizing: border-box;
    margin: 0;
    padding: 0.55rem 0.7rem;
    border: 1px solid color-mix(in srgb, var(--md-default-fg-color) 14%, transparent);
    border-radius: 0;
    background: transparent;
    color: var(--md-default-fg-color);
    font-family: var(--dz-font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-decoration: none !important;
    cursor: pointer;
    line-height: 1.2;
  }

  .mobile-drawer-controls__btn svg {
    width: 1.1rem;
    height: 1.1rem;
    flex-shrink: 0;
  }

  .mobile-drawer-controls__btn:hover,
  .mobile-drawer-controls__btn:focus {
    border-color: var(--md-default-fg-color);
    color: var(--md-default-fg-color);
  }

  .mobile-drawer-controls__meta {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.15rem 0.15rem 0;
  }

  .mobile-drawer-lang {
    position: relative;
    flex: 1 1 auto;
    min-width: 0;
  }

  .mobile-drawer-lang__summary {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    cursor: pointer;
    color: color-mix(in srgb, var(--md-default-fg-color) 62%, transparent);
    font-family: var(--dz-font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    line-height: 1;
    user-select: none;
  }

  .mobile-drawer-lang__summary::-webkit-details-marker {
    display: none;
  }

  .mobile-drawer-lang__summary::marker {
    content: "";
  }

  .mobile-drawer-lang[open] .mobile-drawer-lang__summary,
  .mobile-drawer-lang__summary:hover {
    color: var(--md-default-fg-color);
  }

  .mobile-drawer-lang__chevron {
    font-size: 0.6rem;
    opacity: 0.8;
  }

  /* In-flow list so it expands and pushes nav down — never overlays menu items */
  .mobile-drawer-lang__list {
    list-style: none;
    position: static;
    margin: 0.45rem 0 0;
    padding: 0.25rem 0;
    width: 100%;
    max-width: 12rem;
    border: 1px solid color-mix(in srgb, var(--md-default-fg-color) 14%, transparent);
    background: var(--md-default-bg-color);
    box-shadow: none;
  }

  .mobile-drawer-lang__list a {
    display: block;
    padding: 0.4rem 0.65rem;
    color: var(--md-default-fg-color);
    font-family: var(--dz-font-mono);
    font-size: 0.7rem;
    text-decoration: none;
    line-height: 1.2;
  }

  .mobile-drawer-lang__list a:hover,
  .mobile-drawer-lang__list a.is-active,
  .mobile-drawer-lang__list a[aria-current="page"] {
    background: color-mix(in srgb, var(--md-default-fg-color) 8%, transparent);
  }

  /* Keep palette form in the header DOM for instant nav; hide it visually on
     mobile and expose #drawer-theme-btn as the click proxy instead. */
  .md-header__inner > [data-md-component="palette"] {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .mobile-drawer-theme-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--md-default-fg-color);
    cursor: pointer;
    flex-shrink: 0;
  }

  .mobile-drawer-theme-btn svg {
    width: 1rem;
    height: 1rem;
    display: block;
  }

  .mobile-drawer-theme-btn:hover,
  .mobile-drawer-theme-btn:focus-visible {
    opacity: 0.85;
  }
}

/* TOC title: close control (label) + scroll-to-top link as siblings */
.md-nav--secondary > .md-nav__title {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.md-nav--secondary > .md-nav__title > .toc-page-top {
  color: inherit;
  text-decoration: none;
}

.md-nav--secondary > .md-nav__title > .toc-page-top:hover,
.md-nav--secondary > .md-nav__title > .toc-page-top:focus-visible {
  text-decoration: underline;
}

.page-toolbar-link:hover .page-toolbar-icon,
.page-toolbar-link:focus-visible .page-toolbar-icon {
  opacity: 1;
  filter: none;
}