/* landschaft documentation: brand palette (the logo's slate, green and lime) and layout. */

:root {
  --ls-slate: #0f172a;
  --ls-green: #15803d;
  --ls-green-bright: #22c55e;
  --ls-lime: #a3e635;
  --md-text-font-family: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --md-code-font-family: "JetBrains Mono", "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--ls-slate);
  --md-primary-fg-color--light: #1e293b;
  --md-primary-fg-color--dark: #020617;
  --md-accent-fg-color: var(--ls-green);
  --md-typeset-a-color: var(--ls-green);
}

[data-md-color-scheme="slate"] {
  --md-hue: 222;
  --md-default-bg-color: #0b1120;
  --md-primary-fg-color: #0b1120;
  --md-primary-fg-color--light: #1e293b;
  --md-primary-fg-color--dark: #020617;
  --md-accent-fg-color: var(--ls-lime);
  --md-typeset-a-color: #86efac;
}

body {
  font-family: var(--md-text-font-family);
}

code, kbd, pre {
  font-family: var(--md-code-font-family);
}

.md-header,
.md-tabs {
  background-color: var(--md-primary-fg-color);
}

.md-tabs__link--active,
.md-tabs__link:hover {
  color: var(--ls-lime);
}

.md-header__button.md-logo img {
  height: 1.6rem;
}

/* ---- home page -------------------------------------------------------- */
/* Sober layout: the README's stacked logo, plain sections divided by rules. */

.md-content__inner:has(.ls-hero) > h1:first-child {
  display: none;
}

.ls-hero {
  text-align: center;
  margin: 1.5rem auto 3rem;
  max-width: 40rem;
}

.md-typeset .ls-hero p {
  margin: 0;
}

.md-typeset .ls-hero__logo {
  display: block;
  width: 17rem;
  max-width: 70%;
  margin: 0 auto 1.6rem;
}

.ls-hero__tagline {
  font-size: 1.02rem;
  line-height: 1.65;
  color: var(--md-default-fg-color--light);
}

.md-typeset .ls-hero__actions {
  margin: 1.6rem 0 1.2rem;
}

.ls-hero .md-button {
  margin: 0.2rem 0.2rem;
  border-radius: 0.3rem;
}

.ls-hero__meta {
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--md-default-fg-color--light);
}

.md-typeset .md-button--primary {
  background-color: var(--ls-green);
  border-color: var(--ls-green);
  color: #fff;
}

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

/* section titles of the home page: small caps over a hairline */
.md-content__inner:has(.ls-hero) > h2 {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--md-default-fg-color--light);
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  padding-bottom: 0.5rem;
  margin: 3rem 0 0.4rem;
}

/* what you can do: an index of areas in two columns */
.md-typeset .ls-areas > ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 2.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.md-typeset .ls-areas > ul > li {
  margin: 0;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

.md-typeset .ls-areas > ul > li > p {
  margin: 0;
}

.md-typeset .ls-areas > ul > li > p:first-child {
  margin-bottom: 0.2rem;
}

.md-typeset .ls-areas a {
  color: var(--md-default-fg-color);
}

.md-typeset .ls-areas a:hover {
  color: var(--md-typeset-a-color);
}

.md-typeset .ls-areas > ul > li > p + p {
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--md-default-fg-color--light);
}

/* why: four columns, each under a short brand-coloured rule */
.ls-principles {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2rem;
  margin-top: 1rem;
}

.ls-principles > div {
  border-top: 2px solid var(--ls-green);
  padding-top: 0.6rem;
}

[data-md-color-scheme="slate"] .ls-principles > div {
  border-top-color: var(--ls-lime);
}

.md-typeset .ls-principles h3 {
  margin: 0 0 0.4rem;
  font-size: 0.9rem;
  font-weight: 700;
}

.md-typeset .ls-principles .headerlink {
  display: none;
}

.md-typeset .ls-principles p {
  margin: 0;
  font-size: 0.74rem;
  line-height: 1.6;
  color: var(--md-default-fg-color--light);
}

.md-typeset .ls-validation {
  max-width: 46rem;
  color: var(--md-default-fg-color--light);
}

@media screen and (max-width: 60em) {
  .ls-principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media screen and (max-width: 40em) {
  .md-typeset .ls-areas > ul,
  .ls-principles {
    grid-template-columns: 1fr;
  }
}

/* ---- cards, tables, figures ---------------------------------------------- */

.md-typeset .grid.cards > ul > li,
.md-typeset .grid > .card {
  border-radius: 0.6rem;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid > .card:hover {
  border-color: var(--ls-green);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.12);
  transform: translateY(-1px);
}

.md-typeset .grid.cards .twemoji,
.md-typeset .grid.cards .lg {
  color: var(--ls-green);
}

[data-md-color-scheme="slate"] .md-typeset .grid.cards .twemoji {
  color: var(--ls-lime);
}

.md-typeset table:not([class]) {
  font-size: 0.72rem;
  border-radius: 0.4rem;
}

.md-typeset table:not([class]) th {
  background-color: var(--md-default-fg-color--lightest);
}

.md-typeset figure img {
  border-radius: 0.4rem;
  border: 1px solid var(--md-default-fg-color--lightest);
}

.md-typeset figcaption {
  max-width: 44rem;
  font-size: 0.72rem;
  color: var(--md-default-fg-color--light);
}

/* API reference: parameter tables a bit denser */
.doc-contents table td:first-child code {
  white-space: nowrap;
}

.md-typeset .doc-heading code {
  font-weight: 600;
}

/* secondary buttons: visible on both schemes */
.md-typeset .md-button:not(.md-button--primary) {
  color: var(--ls-green);
  border-color: var(--ls-green);
}

[data-md-color-scheme="slate"] .md-typeset .md-button:not(.md-button--primary) {
  color: var(--ls-lime);
  border-color: var(--ls-lime);
}

.md-typeset .md-button:not(.md-button--primary):hover {
  background-color: var(--ls-green);
  border-color: var(--ls-green);
  color: #fff;
}

/* three cards per row on wide screens */
@media screen and (min-width: 60em) {
  .md-typeset .grid.cards.ls-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* page titles: full contrast */
.md-typeset h1 {
  color: var(--md-default-fg-color);
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* option names in the first column of tables stay on one line */
.md-typeset table:not([class]) td:first-child code {
  white-space: nowrap;
}

/* ---- Learn: the course pages ------------------------------------------------ */

/* a displayed formula, typeset without a maths engine (the site works offline) */
.md-typeset .ls-formula {
  margin: 1rem 0 1.2rem;
  padding: 0.8rem 1rem;
  border-left: 3px solid var(--ls-green);
  background-color: var(--md-code-bg-color);
  border-radius: 0 0.4rem 0.4rem 0;
  font-family: "Cambria Math", "STIX Two Math", "Latin Modern Math", Cambria, Georgia, serif;
  font-size: 0.95rem;
  text-align: center;
  overflow-x: auto;
}

[data-md-color-scheme="slate"] .md-typeset .ls-formula {
  border-left-color: var(--ls-lime);
}

.md-typeset .ls-formula small {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--md-text-font-family);
  font-size: 0.68rem;
  color: var(--md-default-fg-color--light);
  text-align: left;
}

/* the chapter number above a chapter title */
.md-typeset .ls-chapter {
  margin: 0 0 0.2rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ls-green);
}

[data-md-color-scheme="slate"] .md-typeset .ls-chapter {
  color: var(--ls-lime);
}

/* reference lists (<div class="ls-refs" markdown> around a list): hanging indent */
.md-typeset .ls-refs ul {
  list-style: none;
  margin-left: 0;
  font-size: 0.72rem;
}

.md-typeset .ls-refs ul li {
  margin-left: 1.6em;
  text-indent: -1.6em;
}

.md-typeset .ls-formula p {
  margin: 0;
}