/* The one place the site's brand values live: palette, typeface, hero.
   Readability and dark-mode rules follow the 2026-10-03 design handoff
   (.kiro/specs/docs-site/design-handoff-2026-10-03.md). */

:root,
[data-md-color-scheme="default"],
[data-md-color-scheme="slate"] {
  --md-text-font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --md-code-font: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --md-primary-fg-color: #1f2933;
  --md-primary-fg-color--light: #3e4c59;
  --md-primary-fg-color--dark: #121820;
  --md-primary-bg-color: #ffffff;
  --md-primary-bg-color--light: #ffffffb3;
  --fd-text: 17px;
  --fd-leading: 1.7;
  --fd-measure: 70ch;
}

[data-md-color-scheme="default"] {
  --md-accent-fg-color: #b8324b;
  --md-typeset-a-color: #b8324b;
  --md-code-bg-color: #f6f7f8;
  --fd-hero-card-bg: #eceef1;
  --fd-fg: rgba(0, 0, 0, 0.8);
  --fd-fg-strong: rgba(0, 0, 0, 0.9);
  --fd-fg-light: rgba(0, 0, 0, 0.58);
  --fd-fg-lighter: rgba(0, 0, 0, 0.45);
  --fd-border: rgba(0, 0, 0, 0.08);
  --fd-border-strong: rgba(0, 0, 0, 0.12);
  --fd-hover-bg: rgba(0, 0, 0, 0.045);
}

[data-md-color-scheme="slate"] {
  --md-accent-fg-color: #f07d8e;
  --md-typeset-a-color: #f07d8e;
  --fd-hero-card-bg: #eceef1;
  --fd-fg: hsla(225, 15%, 90%, 0.8);
  --fd-fg-strong: hsla(225, 15%, 96%, 0.95);
  --fd-fg-light: hsla(225, 15%, 90%, 0.6);
  --fd-fg-lighter: hsla(225, 15%, 90%, 0.42);
  --fd-border: hsla(225, 15%, 95%, 0.1);
  --fd-border-strong: hsla(225, 15%, 95%, 0.16);
  --fd-hover-bg: hsla(225, 15%, 95%, 0.06);
  --fd-nav-label: hsla(225, 15%, 97%, 0.96);
  --fd-nav-link: hsla(225, 15%, 90%, 0.66);
  --fd-btn-fg: hsla(225, 15%, 92%, 0.9);
  --fd-on-accent: hsla(225, 20%, 10%, 1);
}

/* Layout: a wider grid, 256px sidebars, roomy content, TOC from 1280px up. */

.md-grid {
  max-width: 1360px;
}

.md-sidebar {
  width: 256px;
}

.md-content {
  padding: 56px 64px 120px;
}

@media (max-width: 959px) {
  .md-content {
    padding: 32px 20px 72px;
  }
}

@media (max-width: 1279px) {
  .md-sidebar--secondary {
    display: none;
  }
}

/* The article: one readable measure, larger text, space below blocks only. */

.md-content__inner.md-typeset {
  max-width: var(--fd-measure);
  margin: 0 auto;
  padding-top: 0;
  font-size: var(--fd-text);
  line-height: var(--fd-leading);
  color: var(--fd-fg);
}

.md-typeset p,
.md-typeset ul,
.md-typeset ol {
  margin: 0 0 1.25em;
}

.md-typeset ul,
.md-typeset ol {
  margin-left: 0;
  padding-left: 1.4em;
}

.md-typeset ul li,
.md-typeset ol li {
  margin-left: 0;
  margin-bottom: 0.6em;
}

.md-typeset strong {
  color: var(--fd-fg-strong);
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  font-weight: 650;
  color: var(--fd-fg-strong);
}

.md-typeset h1 {
  font-size: 2.25em;
  line-height: 1.15;
  letter-spacing: -0.022em;
  margin: 0 0 0.5em;
}

.md-typeset h1 + p {
  font-size: 1.15em;
}

.md-typeset h2 {
  font-size: 1.5em;
  margin: 2.25em 0 0.6em;
  padding-top: 1.25em;
  border-top: 1px solid var(--fd-border);
}

.md-typeset hr + h2 {
  padding-top: 0;
  border-top: 0;
}

.md-typeset h3 {
  font-size: 1.15em;
  margin: 2em 0 0.5em;
}

.md-typeset h2 + h3 {
  margin-top: 1em;
}

.md-typeset hr {
  margin: 2.5em 0;
}

.md-typeset a:not(.md-button):not(.headerlink):not(.md-content__button) {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  text-decoration-color: color-mix(in srgb, var(--md-typeset-a-color) 40%, transparent);
}

.md-typeset a:not(.md-button):not(.headerlink):not(.md-content__button):hover {
  text-decoration-color: var(--md-accent-fg-color);
}

.md-typeset pre a {
  text-decoration: none;
}

/* Code. */

.md-typeset code {
  font-size: 0.86em;
  padding: 0.12em 0.38em;
  border-radius: 4px;
}

.md-typeset pre {
  margin: 1.5em 0 1.75em;
}

.md-typeset pre > code {
  padding: 1.1em 1.4em;
  border: 1px solid var(--fd-border);
  border-radius: 8px;
  line-height: 1.65;
}

/* Tables: a bordered, rounded wrapper that scrolls sideways when it must.
   The theme's script wraps each table in __scrollwrap > __table; without the
   script the table carries the border itself. */

.md-typeset table:not([class]) {
  display: table;
  width: 100%;
  font-size: 0.9em;
  line-height: 1.55;
  border: 1px solid var(--fd-border-strong);
  border-radius: 8px;
  border-collapse: separate;
  border-spacing: 0;
}

.md-typeset__scrollwrap {
  margin: 1.5em 0;
  overflow-x: auto;
  border: 1px solid var(--fd-border-strong);
  border-radius: 8px;
}

.md-typeset__table {
  display: block;
  margin: 0;
  padding: 0;
}

.md-typeset__table table:not([class]) {
  margin: 0;
  border: 0;
  border-radius: 0;
}

.md-typeset table:not([class]) th {
  font-size: 0.78em;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--fd-fg-light);
  background-color: var(--md-code-bg-color);
  padding: 0.9em 1.2em;
}

.md-typeset table:not([class]) td {
  padding: 0.9em 1.2em;
  border-top: 1px solid var(--fd-border);
}

.md-typeset table:not([class]) td code {
  white-space: nowrap;
}

/* Left nav: small-caps group headings, padded links, a tinted current page. */

.md-nav--primary {
  line-height: 1.45;
}

.md-nav--primary .md-nav__item--section {
  margin: 28px 0;
}

.md-nav--primary .md-nav__item--section > .md-nav__link {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fd-nav-label, var(--fd-fg-light));
}

.md-nav--primary .md-nav__link {
  margin-top: 0;
  padding: 5px 10px;
  border-radius: 6px;
}

.md-nav--primary .md-nav__item:not(.md-nav__item--section) > .md-nav__link {
  color: var(--fd-nav-link, var(--fd-fg));
}

.md-nav--primary .md-nav__item:not(.md-nav__item--section) > .md-nav__link:hover {
  background-color: var(--fd-hover-bg);
}

.md-nav--primary .md-nav__item:not(.md-nav__item--section) > .md-nav__link--active {
  font-weight: 600;
  color: var(--md-accent-fg-color);
  background-color: var(--fd-hover-bg);
}

/* TOC: titled like a nav heading, links on a 1px rail, the active one marked. */

.md-sidebar--secondary .md-nav__title {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fd-nav-label, var(--fd-fg-light));
  background: none;
  box-shadow: none;
}

.md-sidebar--secondary .md-nav--secondary > .md-nav__list {
  border-left: 1px solid var(--fd-border-strong);
}

.md-sidebar--secondary .md-nav__link {
  margin: 0 0 0 -1px;
  padding: 4px 0 4px 14px;
  border-left: 2px solid transparent;
  color: var(--fd-fg-light);
}

.md-sidebar--secondary .md-nav__link--active {
  color: var(--md-accent-fg-color);
  border-left-color: var(--md-accent-fg-color);
}

/* Buttons: readable in both schemes. */

.md-typeset .md-button {
  color: var(--fd-btn-fg, var(--md-primary-fg-color));
  border-color: var(--fd-btn-fg, var(--md-primary-fg-color));
}

.md-typeset .md-button--primary {
  color: var(--fd-on-accent, #ffffff);
  background-color: var(--md-accent-fg-color);
  border-color: var(--md-accent-fg-color);
}

.md-typeset .md-button:focus,
.md-typeset .md-button:hover {
  color: var(--fd-on-accent, #ffffff);
  background-color: var(--md-accent-fg-color);
  border-color: var(--md-accent-fg-color);
}

/* The home page hero. The image carries its own card and backdrop. */

.fd-hero {
  text-align: center;
  padding: 0 0 1rem;
}

.fd-hero__title {
  margin: 0 0 0.5rem;
  font-size: 2.4em;
  line-height: 1.15;
}

.fd-hero__tagline {
  margin: 0 auto 1.5rem;
  max-width: 36rem;
  font-size: 1.15em;
}

.fd-hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin: 0 0 2rem;
}

.fd-hero__chart {
  margin: 0 auto 2rem;
  background-color: var(--fd-hero-card-bg);
  border-radius: 12px;
  overflow: hidden;
}

.fd-hero__chart img {
  display: block;
  width: 100%;
  height: auto;
}