/* =============================================================================
   Polkadot App Docs — self-contained theme
   -----------------------------------------------------------------------------
   The entire visual identity lives in THIS file plus fonts.css. To revamp the
   look, edit the design tokens in :root and the two colour schemes below; no
   template or component changes are required. Palette and typography are
   adapted from the Polkadot Developer Docs (docs.polkadot.com) style guide.
   ============================================================================= */

:root {
  --white: #ffffff;
  --black: #000000;

  /* Greyscale */
  --grey-50: #fafaf9;
  --grey-100: #f5f5f4;
  --grey-200: #e7e5e4;
  --grey-300: #d6d3d1;
  --grey-400: #a8a29e;
  --grey-500: #78716c;
  --grey-600: #57534e;
  --grey-700: #44403c;
  --grey-800: #292524;
  --grey-900: #1c1917;
  --grey-950: #0f0f0f;

  /* Accent — Polkadot pink */
  --accent-default: #ff2867;
  --accent-hover: #e6245d;
  --accent-active: #cc2050;
  --accent-soft: rgba(255, 40, 103, 0.08);

  /* Semantic */
  --success: #059669;
  --error: #dc2626;
  --warning: #d97706;

  /* Fonts */
  --md-text-font: "DM Sans", sans-serif;
  --md-code-font: "DM Mono", "Courier New", monospace;
  --header-font-family: "DM Serif Display", "DM Sans", serif;

  /* Radius */
  --rounded-sm: 4px;
  --rounded: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-2xl: 24px;
  --rounded-full: 9999px;

  /* Spacing */
  --p-1: 0.25rem;
  --p-2: 0.5rem;
  --p-3: 0.75rem;
  --p-4: 1rem;
}

/* --- Light scheme --------------------------------------------------------- */
:root,
[data-md-color-scheme="polkadot-light"] {
  --color-bg: var(--grey-50);
  --color-surface: var(--white);
  --color-surface-secondary: var(--grey-100);
  --color-text-primary: var(--grey-900);
  --color-text-secondary: var(--grey-600);
  --color-text-tertiary: var(--grey-400);
  --color-border: var(--grey-200);
  --color-border-strong: var(--grey-300);
  --color-tooltip-underline: var(--grey-500);
  --color-text-hover: var(--accent-default);

  --md-default-bg-color: var(--color-bg);
  --md-default-fg-color: var(--color-text-primary);
  --md-default-fg-color--light: var(--color-text-secondary);
  --md-default-fg-color--lighter: var(--color-border-strong);
  --md-default-fg-color--lightest: var(--color-surface-secondary);
  --md-typeset-color: var(--color-text-secondary);
  --md-typeset-a-color: var(--accent-default);
  --md-primary-fg-color: var(--color-bg);
  --md-primary-bg-color: var(--color-text-primary);
  --md-accent-fg-color: var(--accent-default);

  --md-code-bg-color: var(--color-surface);
  --md-code-fg-color: var(--color-text-primary);

  --md-footer-bg-color: var(--color-surface);
  --md-footer-bg-color--dark: var(--color-surface);
  --md-footer-fg-color: var(--color-text-secondary);
  --md-footer-fg-color--light: var(--color-text-secondary);

  --md-typeset-table-color: var(--color-border-strong);
  --md-mermaid-edge-color: var(--color-text-secondary);
  --md-mermaid-node-bg-color: var(--color-surface);
  --md-mermaid-node-fg-color: var(--color-text-primary);
  --md-mermaid-label-bg-color: var(--color-surface-secondary);
  --md-mermaid-label-fg-color: var(--color-text-primary);
}

/* --- Dark scheme ---------------------------------------------------------- */
[data-md-color-scheme="polkadot-dark"] {
  --color-bg: var(--grey-950);
  --color-surface: var(--grey-900);
  --color-surface-secondary: var(--grey-800);
  --color-text-primary: var(--grey-50);
  --color-text-secondary: var(--grey-400);
  --color-text-tertiary: var(--grey-600);
  --color-border: var(--grey-800);
  --color-border-strong: var(--grey-700);
  --color-tooltip-underline: var(--grey-600);
  --color-text-hover: var(--accent-default);

  --md-default-bg-color: var(--color-bg);
  --md-default-fg-color: var(--color-text-primary);
  --md-default-fg-color--light: var(--color-text-secondary);
  --md-default-fg-color--lighter: var(--color-surface-secondary);
  --md-default-fg-color--lightest: var(--color-bg);
  --md-typeset-color: var(--color-text-secondary);
  --md-typeset-a-color: var(--accent-default);
  --md-primary-fg-color: var(--color-bg);
  --md-primary-bg-color: var(--color-text-primary);
  --md-accent-fg-color: var(--accent-default);

  --md-code-bg-color: var(--color-surface);
  --md-code-fg-color: var(--color-text-primary);

  --md-footer-bg-color: var(--color-surface);
  --md-footer-bg-color--dark: var(--color-surface);
  --md-footer-fg-color: var(--color-text-secondary);
  --md-footer-fg-color--light: var(--color-text-secondary);

  --md-typeset-table-color: var(--color-border-strong);
  --md-mermaid-edge-color: var(--color-text-secondary);
  --md-mermaid-node-bg-color: var(--color-surface);
  --md-mermaid-node-fg-color: var(--color-text-primary);
  --md-mermaid-label-bg-color: var(--color-surface-secondary);
  --md-mermaid-label-fg-color: var(--color-text-primary);
}

/* --- Typography ----------------------------------------------------------- */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  font-family: var(--header-font-family);
  font-weight: 600;
  color: var(--color-text-primary);
}

.md-typeset h1 {
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--p-2);
}

.md-typeset h2 {
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.md-typeset h3,
.md-typeset h4 {
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.md-typeset a {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.md-typeset a:focus,
.md-typeset a:hover {
  color: var(--color-text-hover);
}

.md-typeset [data-preview],
.md-typeset abbr {
  border-bottom-color: var(--color-tooltip-underline);
}

/* --- Layout --------------------------------------------------------------- */
.md-header__inner,
.md-footer-meta__inner {
  max-width: 76rem;
}

.md-main__inner.md-grid {
  max-width: 71rem;
}

@media screen and (min-width: 76.25em) {
  .md-content {
    padding: 0 2.5rem;
  }
}

/* --- Header / tabs --------------------------------------------------------- */
.md-header {
  box-shadow: none;
  border-bottom: 1px solid var(--color-border-strong);
}

.md-header__inner {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  height: 64px;
  gap: var(--p-2);
}

.md-header__title {
  display: none;
}

.md-header__button.md-logo img,
.md-header__button.md-logo svg {
  height: 36px;
  width: auto;
}

.md-header__button:hover {
  color: var(--color-text-hover);
}

.md-tabs {
  background-color: transparent;
}

.md-header__inner > .md-tabs {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  width: auto;
  height: 100%;
  min-width: 0;
  overflow: hidden;
}

.md-header__inner > .md-tabs .md-grid {
  width: 100%;
  max-width: none;
  margin: 0;
}

.md-header__inner > .md-tabs .md-tabs__list {
  display: flex;
  align-items: center;
  gap: var(--p-1);
  height: auto;
  margin: 0;
  overflow: hidden;
}

.md-header__inner > .md-tabs .md-tabs__item {
  height: auto;
  padding: 0;
  white-space: nowrap;
}

.md-tabs__link {
  opacity: 1;
  padding: var(--p-1) var(--p-2);
  margin-top: 0;
  color: var(--color-text-secondary);
}

.md-tabs__link:focus,
.md-tabs__link:hover,
.md-tabs__link--active {
  color: var(--color-text-primary);
}

/* --- Accents -------------------------------------------------------------- */
.md-nav__link--active,
.md-nav__item .md-nav__link--active {
  color: var(--accent-default);
}

.md-typeset .md-button--primary {
  background-color: var(--accent-default);
  border-color: var(--accent-default);
  color: var(--white);
}

.md-typeset .md-button--primary:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* --- Home page ------------------------------------------------------------ */
body:has(.home-hero) .md-main__inner {
  display: block;
}

body:has(.home-hero) .md-sidebar {
  display: none !important;
}

body:has(.home-hero) .md-content {
  max-width: 76rem;
  margin: 0 auto;
}

.home-hero {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: -1.5rem 0 2rem;
  padding: 5rem 1.5rem 4rem;
  border-bottom: 1px solid var(--color-border);
  background:
    radial-gradient(circle at 50% 22%, var(--accent-soft), transparent 34rem),
    linear-gradient(180deg, var(--color-surface), var(--color-bg));
  text-align: center;
}

.md-typeset .home-eyebrow {
  margin: 0 0 1rem;
  color: var(--accent-default);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.md-typeset .home-hero h1 {
  max-width: 72rem;
  margin: 0 auto 1rem;
  color: var(--color-text-primary);
  font-size: clamp(2.35rem, 6.5vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.md-typeset .home-tagline {
  max-width: 46rem;
  margin: 0 auto 2rem;
  color: var(--color-text-secondary);
  font-size: 1.15rem;
  line-height: 1.6;
}

.home-actions {
  display: flex;
  justify-content: center;
  width: 100%;
}

.md-typeset .home-actions p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin: 0;
}

.home-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 1rem 0 2.25rem;
}

.home-card-grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.home-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--rounded);
  background: var(--color-surface);
}

.md-typeset .home-card h3 {
  margin: 0 0 0.55rem;
  font-family: var(--md-text-font);
  font-size: 1.05rem;
  letter-spacing: 0;
}

.md-typeset .home-card p {
  margin: 0 0 1rem;
}

.md-typeset .home-card a {
  margin-top: auto;
  font-weight: 700;
  text-decoration: none;
}

.home-link-list {
  column-count: 2;
  column-gap: 2rem;
  margin-bottom: 2rem;
}

.home-link-list li {
  break-inside: avoid;
  margin-bottom: 0.45rem;
}

@media screen and (max-width: 60em) {
  .home-card-grid,
  .home-card-grid--three {
    grid-template-columns: 1fr;
  }
}

@media screen and (max-width: 40em) {
  .home-hero {
    min-height: 0;
    padding: 3.25rem 1rem 3rem;
  }

  .md-typeset .home-tagline {
    font-size: 1rem;
  }

  .md-typeset .home-actions p {
    align-items: stretch;
    flex-direction: column;
  }

  .home-actions .md-button {
    width: 100%;
    text-align: center;
  }

  .home-link-list {
    column-count: 1;
  }
}

/* Inline code pills */
.md-typeset code {
  border-radius: var(--rounded-sm);
  background-color: var(--color-surface-secondary);
}

/* Tables */
.md-typeset table:not([class]) {
  border: 1px solid var(--color-border);
  border-radius: var(--rounded-lg);
  overflow: hidden;
}

.md-typeset table:not([class]) th {
  background-color: var(--color-surface-secondary);
  color: var(--color-text-primary);
}