/* Busroot docs theme: brand colours (from www/src/globals.css), type hierarchy and
   readable tables and admonitions on top of Material's defaults. mkdocs.yml sets
   `primary: custom` / `accent: custom` so these variables take effect. */

/* ---------- Colour ---------- */

:root {
  --busroot-teal-900: #011f26;
  --busroot-teal-800: #002933;
  --busroot-teal-500: #026873;
  --busroot-teal-400: #03a688;
  --busroot-mint: #00e2b6;
}

[data-md-color-scheme="default"] {
  --md-primary-fg-color: var(--busroot-teal-800);
  --md-primary-fg-color--light: var(--busroot-teal-500);
  --md-primary-fg-color--dark: var(--busroot-teal-900);
  --md-accent-fg-color: var(--busroot-teal-400);
  --md-accent-fg-color--transparent: rgba(3, 166, 136, 0.1);
  --md-typeset-a-color: var(--busroot-teal-500);
  --busroot-heading: #0b2a30;
  --busroot-lead: #3a5a60;
  --busroot-tint: rgba(2, 104, 115, 0.07);
  --busroot-tint-strong: rgba(2, 104, 115, 0.12);
  --busroot-rule: rgba(2, 104, 115, 0.18);
}

[data-md-color-scheme="slate"] {
  --md-hue: 192;
  --md-default-bg-color: #06191e;
  --md-primary-fg-color: var(--busroot-teal-900);
  --md-primary-fg-color--light: var(--busroot-teal-500);
  --md-primary-fg-color--dark: #000f13;
  --md-accent-fg-color: var(--busroot-mint);
  --md-accent-fg-color--transparent: rgba(0, 226, 182, 0.1);
  --md-typeset-a-color: var(--busroot-mint);
  --busroot-heading: #e6f2f2;
  --busroot-lead: #b8cfd1;
  --busroot-tint: rgba(0, 226, 182, 0.06);
  --busroot-tint-strong: rgba(0, 226, 182, 0.1);
  --busroot-rule: rgba(0, 226, 182, 0.16);
}

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

/* ---------- Type ---------- */

.md-typeset {
  font-size: 0.72rem;
  line-height: 1.7;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  color: var(--busroot-heading);
  letter-spacing: -0.01em;
}

.md-typeset h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.8em;
}

/* The opening paragraph of a page is its summary, so give it lead weight */
.md-typeset h1 + p {
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--busroot-lead);
}

/* Sections (Connect, Control, Optimise, Metrics, FAQs...) get a rule above them */
.md-typeset h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 2.2em 0 0.8em;
  padding-top: 1.2em;
  border-top: 1px solid var(--busroot-rule);
}

.md-typeset h1 + h2,
.md-typeset h1 + p + h2 {
  border-top: 0;
  padding-top: 0;
}

.md-typeset h3 {
  font-size: 0.95rem;
  font-weight: 650;
  margin: 1.8em 0 0.6em;
}

.md-typeset h4 {
  font-size: 0.8rem;
  font-weight: 650;
  margin: 1.6em 0 0.4em;
  color: var(--md-typeset-a-color);
}

.md-typeset ul li,
.md-typeset ol li {
  margin-bottom: 0.2em;
  line-height: 1.6;
}

.md-typeset strong {
  font-weight: 650;
}

.md-typeset code {
  font-size: 0.85em;
  padding: 0.1em 0.35em;
  border-radius: 0.2rem;
  background-color: var(--busroot-tint-strong);
}

/* ---------- Tables ---------- */

.md-typeset table:not([class]) {
  font-size: 0.68rem;
  border: 1px solid var(--busroot-rule);
  border-radius: 0.3rem;
  box-shadow: none;
}

.md-typeset table:not([class]) th {
  background-color: var(--busroot-tint-strong);
  color: var(--busroot-heading);
  font-weight: 650;
  padding: 0.75em 1em;
}

.md-typeset table:not([class]) td {
  padding: 0.7em 1em;
  vertical-align: top;
  border-top: 1px solid var(--busroot-rule);
}

.md-typeset table:not([class]) tbody tr:nth-child(even) {
  background-color: var(--busroot-tint);
}

.md-typeset table:not([class]) tbody tr:hover {
  background-color: var(--busroot-tint-strong);
  box-shadow: none;
}

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

.md-typeset .admonition,
.md-typeset details {
  font-size: 0.7rem;
  line-height: 1.6;
  border-radius: 0.3rem;
  box-shadow: none;
}

/* Notes take the brand colour; warnings, tips etc. keep Material's own */
.md-typeset .admonition.note,
.md-typeset details.note {
  border-color: var(--md-primary-fg-color--light);
}

.md-typeset .note > .admonition-title,
.md-typeset .note > summary {
  background-color: var(--busroot-tint-strong);
}

.md-typeset .note > .admonition-title::before,
.md-typeset .note > summary::before {
  background-color: var(--md-primary-fg-color--light);
}

[data-md-color-scheme="slate"] .md-typeset .admonition.note,
[data-md-color-scheme="slate"] .md-typeset details.note {
  border-color: var(--busroot-teal-400);
}

[data-md-color-scheme="slate"] .md-typeset .note > .admonition-title::before,
[data-md-color-scheme="slate"] .md-typeset .note > summary::before {
  background-color: var(--busroot-teal-400);
}

/* ---------- Images ---------- */

.md-typeset img {
  border-radius: 0.3rem;
  border: 1px solid var(--busroot-rule);
}

/* ---------- Page contents (right) and nav (left) ---------- */

.md-nav__title {
  color: var(--busroot-heading);
}

.md-nav--secondary .md-nav__link {
  font-size: 0.68rem;
}

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

/* ---------- Metric cards (built by hooks/metric_cards.py) ---------- */

.md-typeset .metric-card {
  position: relative;
  margin: 1em 0;
  padding: 0.9em 1.2em 0.4em;
  border: 1px solid var(--busroot-rule);
  border-left: 4px solid var(--md-primary-fg-color--light);
  border-radius: 0.35rem;
  background-color: var(--busroot-tint);
}

[data-md-color-scheme="slate"] .md-typeset .metric-card {
  border-left-color: var(--busroot-teal-400);
}

.md-typeset .metric-card h3 {
  margin: 0 0 0.4em;
  padding-right: 10rem;
  font-size: 0.9rem;
}

/* Unit badge, top right of the card */
.md-typeset .metric-card .metric-unit {
  position: absolute;
  top: 0.95em;
  right: 1.2em;
  margin: 0;
  max-width: 9.5rem;
  padding: 0.15em 0.7em;
  border-radius: 1em;
  background-color: var(--busroot-tint-strong);
  color: var(--busroot-heading);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  line-height: 1.5;
}

.md-typeset .metric-card .metric-formula {
  margin: 0.6em 0 0.8em;
  padding: 0.55em 0.9em;
  border-radius: 0.3rem;
  background-color: var(--md-default-bg-color);
  border: 1px dashed var(--busroot-rule);
  font-family: var(--md-code-font-family);
  font-size: 0.66rem;
}

.md-typeset .metric-card .metric-formula strong {
  font-weight: 600;
}

/* The remaining bullets (Notes, States...) read as labelled rows, not a list */
.md-typeset .metric-card > ul {
  list-style: none;
  margin-left: 0;
  padding-left: 0;
  font-size: 0.68rem;
  color: var(--md-default-fg-color--light);
}

.md-typeset .metric-card > ul > li {
  margin-left: 0;
}

.md-typeset .metric-card > ul > li > strong:first-child,
.md-typeset .metric-card > ul > li > p:first-child > strong:first-child {
  display: block;
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--busroot-heading);
}

.md-typeset .metric-card > ul ul {
  list-style: disc;
}

@media screen and (max-width: 44.9375em) {
  .md-typeset .metric-card .metric-unit {
    position: static;
    display: inline-block;
    margin: 0 0 0.6em;
    max-width: none;
  }

  .md-typeset .metric-card h3 {
    padding-right: 0;
  }
}

/* ---------- Top-level tabs on small screens ---------- */

/* Material hides the tabs below its desktop breakpoint, which leaves the top-level
   sections reachable only through the drawer (and the drawer opens at the current
   page's level, not the top). Keep the tabs as a scrollable bar under the header. */
@media screen and (max-width: 76.234375em) {
  .md-tabs {
    display: block;
  }

  .md-tabs__list {
    white-space: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .md-tabs__list::-webkit-scrollbar {
    display: none;
  }

  .md-tabs__item {
    display: inline-block;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
  }
}

/* On phones, drop the tab icons and tighten spacing so all five sections fit */
@media screen and (max-width: 30em) {
  .md-tabs .busroot-nav-icon {
    display: none;
  }

  .md-tabs__list {
    margin-left: 0.3rem;
  }

  .md-tabs__item {
    padding-left: 0.4rem;
    padding-right: 0.4rem;
  }
}

/* ---------- Grid cards (capabilities overview) ---------- */

.md-typeset .grid.cards > ul > li {
  border: 1px solid var(--busroot-rule);
  border-radius: 0.35rem;
  background-color: var(--busroot-tint);
}

.md-typeset .grid.cards > ul > li:hover {
  border-color: var(--md-accent-fg-color);
  box-shadow: none;
}

.md-typeset .grid.cards > ul > li > p:first-child {
  font-size: 0.85rem;
}

.md-typeset .grid.cards em {
  color: var(--md-default-fg-color--light);
}