/* passageway: teal accent on quiet ink; the header is a hairline, not a coloured bar. */

:root > * {
  --pw-accent: #0f766e;
  --pw-warm: #115e59;
  --pw-ink: #1e293b;
  --pw-mist: #eef4f3;

  --md-primary-fg-color: #ffffff;
  --md-primary-fg-color--light: #ffffff;
  --md-primary-fg-color--dark: #ffffff;
  --md-primary-bg-color: var(--pw-ink);
  --md-primary-bg-color--light: #475569;
  --md-accent-fg-color: var(--pw-warm);
  --md-typeset-a-color: var(--pw-accent);
  --md-typeset-color: var(--pw-ink);
  --md-footer-bg-color: #12211f;
  --md-footer-bg-color--dark: #0d1a18;
}

[data-md-color-scheme="slate"] {
  --md-hue: 175;
  --pw-accent: #5eead4;
  --pw-warm: #99f6e4;
  --pw-ink: #e2e8e6;
  --pw-mist: hsla(175, 15%, 18%, 1);

  --md-primary-fg-color: hsla(175, 15%, 12%, 1);
  --md-primary-fg-color--light: hsla(175, 15%, 12%, 1);
  --md-primary-fg-color--dark: hsla(175, 15%, 12%, 1);
  --md-primary-bg-color: var(--pw-ink);
  --md-typeset-a-color: var(--pw-accent);
  --md-typeset-color: hsla(175, 10%, 88%, 1);
}

.md-header {
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  box-shadow: none;
}
.md-header[data-md-state="shadow"],
.md-header--shadow {
  box-shadow: 0 1px 0 var(--md-default-fg-color--lightest);
}
.md-search__input {
  background-color: var(--pw-mist);
  color: var(--pw-ink);
}
.md-search__input::placeholder,
.md-search__icon {
  color: var(--md-default-fg-color--light);
}
.md-search__input:hover {
  background-color: var(--pw-mist);
}

/* The header already names the site; drop the repeat atop the sidebar. */
@media screen and (min-width: 76.25em) {
  .md-nav--primary > .md-nav__title {
    display: none;
  }
}

/* Reading rhythm: Atkinson reads best a touch larger and looser. */
.md-typeset {
  font-size: 0.82rem;
  line-height: 1.65;
}
.md-typeset h1 {
  color: var(--pw-ink);
  font-weight: 700;
  letter-spacing: -0.015em;
}
.md-typeset h2 {
  font-weight: 700;
  letter-spacing: -0.01em;
}
.md-typeset a:focus-visible,
.md-nav__link:focus-visible {
  outline: 2px solid var(--pw-warm);
  outline-offset: 2px;
}

/* Home page hero. */
.pw-hero {
  padding: 1.5rem 0 0.5rem;
}
.md-typeset .pw-hero h1 {
  font-size: 2.4rem;
  line-height: 1.1;
  margin: 0.4em 0 0.4em;
  max-width: 13em;
  text-wrap: balance;
}
.pw-hero__lead {
  font-size: 1.05rem;
  line-height: 1.55;
  max-width: 34em;
  color: var(--md-default-fg-color--light);
}
.md-typeset .pw-hero .md-button {
  margin: 0.3rem 0.4rem 0.3rem 0;
}
.md-typeset .md-button {
  color: var(--pw-accent);
  border-color: currentColor;
}
.md-typeset .md-button--primary {
  background-color: var(--pw-accent);
  border-color: var(--pw-accent);
  color: #ffffff;
}
[data-md-color-scheme="slate"] .md-typeset .md-button--primary {
  color: #0b1f1c;
}
.md-typeset .md-button--primary:hover,
.md-typeset .md-button--primary:focus {
  background-color: var(--pw-warm);
  border-color: var(--pw-warm);
}

@media screen and (max-width: 44.9375em) {
  .md-typeset .pw-hero h1 {
    font-size: 1.8rem;
  }
}

/* Two links for AI agents in the header bar, between the title and the theme toggle. The header has no room for them on
   narrow screens, where the guide for agents is a page in the navigation. */
.pw-header-links {
  display: none;
  align-items: center;
  gap: 1.1rem;
  margin: 0 0.6rem;
  font-size: 0.7rem;
  white-space: nowrap;
}
.pw-header-links a {
  color: var(--md-primary-bg-color);
  opacity: 0.7;
  text-decoration: none;
}
.pw-header-links a:hover,
.pw-header-links a:focus-visible {
  color: var(--md-typeset-a-color);
  opacity: 1;
}
@media screen and (min-width: 60em) {
  .pw-header-links {
    display: flex;
  }
}

/* ---- The roadmap timeline (docs/roadmap.yml, rendered by docs_hooks/roadmap.py) ----------------------------------------
   A label on the left (a date for what shipped), a line with a marker (hollow: planned, filled with a check: shipped) and a
   card on the right. On narrow screens the label moves into the card and the line stays on the left. */
.md-typeset .pw-center {
  text-align: center;
}
.md-typeset .pw-lead {
  max-width: 34em;
  margin-inline: auto;
  color: var(--md-default-fg-color--light);
}

.pw-timeline {
  --pw-dot: 1.1rem;
  --pw-when: 6.2rem;
  --pw-gap: 0.9rem;
  max-width: 46rem;
  margin: 2.2rem auto 2.6rem;
}
.pw-tl-row {
  position: relative;
  display: grid;
  grid-template-columns: var(--pw-when) var(--pw-dot) minmax(0, 1fr);
  column-gap: var(--pw-gap);
  padding-bottom: 0.6rem;
}
.pw-tl-row::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--pw-when) + var(--pw-gap) + var(--pw-dot) / 2 - 1px);
  width: 2px;
  background: var(--md-default-fg-color--lightest);
}
.pw-tl-row:first-child::before {
  top: 1.25rem;
}
.pw-tl-row:last-child::before {
  bottom: calc(100% - 1.25rem);
}

.pw-tl-when {
  padding-top: 0.78rem;
  text-align: right;
  font-size: 0.72rem;
  font-style: italic;
  white-space: nowrap;
  color: var(--md-default-fg-color--light);
}
.pw-tl-dot {
  position: relative;
  z-index: 1;
  box-sizing: border-box;
  width: var(--pw-dot);
  height: var(--pw-dot);
  margin-top: 0.7rem;
  border: 2px solid var(--pw-accent);
  border-radius: 50%;
  background: var(--md-default-bg-color);
}
.pw-later .pw-tl-dot {
  border-color: var(--md-default-fg-color--lighter);
}
.pw-decide .pw-tl-dot {
  border-style: dashed;
  border-color: var(--pw-warm);
}
.pw-done .pw-tl-dot {
  background: var(--pw-accent);
}
.pw-done .pw-tl-dot::after {
  content: "";
  position: absolute;
  left: 0.27rem;
  top: 0.06rem;
  width: 0.28rem;
  height: 0.56rem;
  border: solid var(--md-default-bg-color);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.pw-tl-card {
  padding: 0.65rem 1rem 0.7rem;
  border-radius: 0.6rem;
  background: var(--pw-mist);
}
.pw-tl-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.pw-ic {
  display: inline-flex;
  flex: none;
  width: 1.05rem;
  height: 1.05rem;
  color: var(--pw-accent);
}
.pw-ic svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}
.pw-later .pw-ic {
  color: var(--md-default-fg-color--light);
}
.pw-decide .pw-ic {
  color: var(--pw-warm);
}
.pw-tl-title {
  flex: 1 1 auto;
  font-weight: 600;
}
.pw-tl-links {
  display: flex;
  gap: 0.7rem;
  font-size: 0.72rem;
  white-space: nowrap;
}
.md-typeset .pw-tl-summary {
  margin: 0.2rem 0 0;
  font-size: 0.78rem;
  color: var(--md-default-fg-color--light);
}
/* Material styles every <details> as an admonition (a box with an icon and a chevron); here it is a quiet "Details" toggle. */
.md-typeset details.pw-tl-details {
  margin: 0.45rem 0 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: none;
  font-size: 0.76rem;
}
.md-typeset details.pw-tl-details > summary {
  margin: 0;
  padding: 0;
  background: none;
  font-weight: 500;
  cursor: pointer;
  color: var(--md-typeset-a-color);
}
.md-typeset details.pw-tl-details > summary::before {
  content: none;
}
.md-typeset details.pw-tl-details > summary::after {
  content: "\203A";
  position: static;
  display: inline-block;
  width: auto;
  height: auto;
  margin-left: 0.35em;
  background: none;
  -webkit-mask-image: none;
  mask-image: none;
  color: inherit;
  transition: transform 0.15s;
}
.md-typeset details.pw-tl-details[open] > summary::after {
  transform: rotate(90deg);
}
.md-typeset .pw-tl-details p,
.md-typeset .pw-tl-details ul {
  margin: 0.4em 0;
}

@media screen and (max-width: 44.9375em) {
  .pw-timeline {
    --pw-when: 0rem;
  }
  .pw-tl-row {
    grid-template-columns: var(--pw-dot) minmax(0, 1fr);
    grid-template-areas: ". when" "dot card";
  }
  .pw-tl-row::before {
    left: calc(var(--pw-dot) / 2 - 1px);
  }
  .pw-tl-when {
    grid-area: when;
    padding: 0.2rem 0 0.15rem;
    text-align: left;
    font-size: 0.68rem;
  }
  .pw-tl-dot {
    grid-area: dot;
    margin-top: 0.7rem;
  }
  .pw-tl-card {
    grid-area: card;
  }
  .pw-tl-head {
    flex-wrap: wrap;
  }
}

/* Home page hero: text left, the animation right on wide screens. */
.pw-teal {
  color: var(--pw-accent);
}
@media screen and (min-width: 60em) {
  .pw-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    column-gap: 1.5rem;
    align-items: center;
  }
  .pw-hero > * {
    grid-column: 1;
  }
  .pw-hero > .pw-hero__art {
    grid-column: 2;
    grid-row: 1 / span 4;
  }
}
.pw-hero__art svg {
  width: 100%;
  height: auto;
  font-size: 13px;
}
.pw-anim .pw-flow {
  fill: none;
  stroke: var(--pw-accent);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 1 8;
  opacity: 0.6;
  animation: pw-dash 1.2s linear infinite;
}
@keyframes pw-dash {
  to {
    stroke-dashoffset: -9;
  }
}
.pw-anim .pw-dot {
  fill: var(--pw-accent);
}
.pw-anim .pw-core {
  fill: var(--pw-accent);
}
.pw-anim .pw-arch {
  fill: none;
  stroke: var(--md-default-bg-color);
  stroke-width: 6;
  stroke-linecap: round;
}
@media (prefers-reduced-motion: reduce) {
  .pw-anim .pw-flow {
    animation: none;
  }
  .pw-anim .pw-dot {
    display: none;
  }
}

/* Diagrams (Mermaid) in the site's colours. */
:root > * {
  --md-mermaid-edge-color: var(--pw-accent);
  --md-mermaid-node-bg-color: var(--pw-mist);
  --md-mermaid-node-fg-color: var(--pw-ink);
  --md-mermaid-label-bg-color: var(--md-default-bg-color);
  --md-mermaid-label-fg-color: var(--pw-ink);
  --md-mermaid-sequence-actor-bg-color: var(--pw-mist);
  --md-mermaid-sequence-actor-border-color: var(--pw-accent);
  --md-mermaid-sequence-actor-fg-color: var(--pw-ink);
  --md-mermaid-sequence-actor-line-color: var(--md-default-fg-color--lighter);
  --md-mermaid-sequence-actorman-bg-color: var(--pw-mist);
  --md-mermaid-sequence-actorman-line-color: var(--pw-accent);
  --md-mermaid-sequence-box-bg-color: var(--pw-mist);
  --md-mermaid-sequence-box-fg-color: var(--pw-ink);
  --md-mermaid-sequence-label-bg-color: var(--pw-mist);
  --md-mermaid-sequence-label-fg-color: var(--pw-ink);
  --md-mermaid-sequence-loop-bg-color: var(--pw-mist);
  --md-mermaid-sequence-loop-border-color: var(--pw-accent);
  --md-mermaid-sequence-loop-fg-color: var(--pw-ink);
  --md-mermaid-sequence-message-fg-color: var(--pw-ink);
  --md-mermaid-sequence-message-line-color: var(--pw-accent);
  --md-mermaid-sequence-note-bg-color: var(--pw-mist);
  --md-mermaid-sequence-note-border-color: var(--pw-accent);
  --md-mermaid-sequence-note-fg-color: var(--pw-ink);
  --md-mermaid-sequence-number-bg-color: var(--pw-accent);
  --md-mermaid-sequence-number-fg-color: var(--md-default-bg-color);
}

/* Charts (docs_hooks/charts.py): three validated categorical slots, light and dark; text in ink, never in the series colour. */
:root > * {
  --viz-1: #2a78d6;
  --viz-2: #eb6834;
  --viz-3: #1baf7a;
}
[data-md-color-scheme="slate"] {
  --viz-1: #3987e5;
  --viz-2: #d95926;
  --viz-3: #199e70;
}
.md-typeset .pw-chart {
  display: block;
  width: 100%;
  margin: 1rem 0 1.6rem;
}
.pw-chart svg {
  width: 100%;
  height: auto;
  overflow: visible;
}
.pw-chart text {
  fill: var(--md-default-fg-color);
  font-size: 13px;
}
.pw-chart .pw-chart-small {
  fill: var(--md-default-fg-color--light);
  font-size: 12px;
}
.pw-chart .pw-chart-ontext {
  fill: #fff;
  font-weight: 700;
}
.pw-s1 { fill: var(--viz-1); }
.pw-s2 { fill: var(--viz-2); }
.pw-s3 { fill: var(--viz-3); }
.pw-l1 { stroke: var(--viz-1); }
.pw-l2 { stroke: var(--viz-2); }
.pw-l3 { stroke: var(--viz-3); }
.pw-chart .pw-line,
.pw-chart .pw-whisker {
  fill: none;
  stroke-width: 2;
  stroke-linejoin: round;
}
.pw-chart .pw-ring {
  stroke: var(--md-default-bg-color);
  stroke-width: 2;
}
.pw-chart .pw-grid {
  stroke: var(--md-default-fg-color--lightest);
  stroke-width: 1;
}
.pw-chart .pw-default {
  stroke: var(--md-default-fg-color--light);
  stroke-width: 1;
  stroke-dasharray: 4 3;
}
.pw-anim .pw-node-link {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  border: 1.2px solid var(--pw-accent);
  border-radius: 7px;
  background: var(--pw-mist);
  color: var(--pw-ink);
  font-size: 13px;
  text-decoration: none;
}
.pw-anim .pw-node-link:hover,
.pw-anim .pw-node-link:focus-visible {
  background: var(--pw-accent);
  color: var(--md-default-bg-color);
}