:root {
  /* Desaturated variants of the logo's violet (#6e63f5). The mark's hue at full
     strength is too loud once it fills the header and every link on the page,
     so the site keeps the hue and drops the saturation. */
  --sa-accent-deep: #37327b;
  --sa-accent-dark: #4a45a8;
  --sa-accent: #756ed8;
  --sa-accent-light: #9e99e6;
}

/* Material's built-in palettes have no purple that matches the logo, so the
   theme is set to `primary: custom` / `accent: custom` and wired up here. */

[data-md-color-primary="custom"] {
  --md-primary-fg-color: var(--sa-accent-dark);
  --md-primary-fg-color--light: var(--sa-accent);
  --md-primary-fg-color--dark: var(--sa-accent-deep);
  --md-primary-bg-color: #fff;
  --md-primary-bg-color--light: rgba(255, 255, 255, 0.7);
}

[data-md-color-accent="custom"] {
  --md-accent-fg-color: var(--sa-accent);
  --md-accent-fg-color--transparent: rgba(117, 110, 216, 0.1);
  --md-accent-bg-color: #fff;
  --md-accent-bg-color--light: rgba(255, 255, 255, 0.7);
}

/* Material lightens the link colour per built-in primary under slate; `custom`
   gets no such rule, so link text would inherit the dark header tone. */
[data-md-color-scheme="slate"][data-md-color-primary="custom"] {
  --md-typeset-a-color: var(--sa-accent-light);
}

/* ---------- Typography & layout polish ---------- */

.md-typeset h1 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.md-typeset h2 {
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 2em;
}

.md-typeset {
  line-height: 1.65;
}

.md-typeset table:not([class]) {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.md-typeset table:not([class]) th {
  background-color: var(--sa-accent-dark);
  color: white;
}

.md-typeset code {
  border-radius: 4px;
}

.md-typeset pre > code {
  border-radius: 8px;
}

.md-typeset .highlight {
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

/* ---------- Hero ---------- */

.sa-hero {
  text-align: center;
  padding: 3rem 0 2.5rem;
  margin: 0 0 2rem;
}

/* The logo is wrapped in a paragraph by Markdown; its margin would otherwise
   stack with the h1's and open a gap under the mark. */
.sa-hero > p:first-child {
  margin: 0;
}

.sa-hero > p:first-child img {
  display: block;
  width: 180px;
  margin: 0 auto;
}

.sa-hero h1 {
  margin: 0.4rem 0 0.4rem;
  font-size: 2.2rem;
  color: var(--md-default-fg-color);
}

.sa-hero p.sa-tagline {
  font-size: 1.2rem;
  font-weight: 600;
  background: linear-gradient(120deg, var(--sa-accent-dark), var(--sa-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0;
}

[data-md-color-scheme="slate"] .sa-hero p.sa-tagline {
  background: linear-gradient(120deg, var(--sa-accent-light), var(--sa-accent));
  background-clip: text;
  -webkit-background-clip: text;
}

.sa-hero p.sa-subtitle {
  max-width: 640px;
  margin: 0.9rem auto 1.6rem;
  color: var(--md-default-fg-color--light);
}

.sa-hero .md-button {
  margin: 0.25rem;
  border-radius: 8px;
}

.sa-badges img {
  margin: 0.15rem;
}

/* ---------- Grid cards ---------- */

.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > ol > li {
  border-radius: 12px;
  border: 1px solid var(--md-default-fg-color--lightest);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    border-color 0.15s ease;
}

.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid.cards > ol > li:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(74, 69, 168, 0.18);
  border-color: var(--sa-accent-light);
}

.md-typeset .grid.cards > ul > li:first-child,
.md-typeset .grid.cards > ol > li:first-child {
  --md-typeset-color: inherit;
}

.md-typeset .grid.cards svg,
.md-typeset .grid.cards .twemoji {
  color: var(--sa-accent);
}

/* ---------- Admonitions ---------- */

.md-typeset .admonition,
.md-typeset details {
  border-radius: 10px;
}

/* ---------- Header / nav accent ---------- */

.md-header {
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.06);
}

/* The header fill sits close to the mark's own violet, so the logo would fade
   into it; flatten the header copy to white. The hero keeps the gradient. */
.md-header__button.md-logo img {
  filter: brightness(0) invert(1);
}

.md-nav__link--active,
.md-nav__link:focus,
.md-nav__link:hover {
  color: var(--sa-accent);
}

.md-typeset a {
  text-decoration-thickness: 1px;
}