/* psdocs · layout.css — header, three-column grid, sidebar, toc, footer */

/* ============ Header ============ */
.ps-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--layout-header-height);
  background: var(--color-canvas-default);
  border-bottom: 1px solid var(--color-border-default);
}
.ps-header__inner {
  display: grid;
  grid-template-columns: minmax(max-content, 1fr) minmax(220px, 736px) minmax(max-content, 1fr);
  align-items: center;
  gap: var(--space-4);
  height: 100%;
  max-width: none;
  margin: 0;
  padding: 0 15px;
}
.ps-header__leading {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  min-width: 0;
  justify-self: start;
}
.ps-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-fg-default);
  font-weight: 600;
  font-size: var(--fs-16);
}
.ps-brand:hover { text-decoration: none; }
.ps-brand__logo {
  width: 123px;
  height: 28px;
  display: block;
  object-fit: contain;
}

.ps-header__spacer { flex: 1; }

.ps-search {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  width: 430px;
  max-width: 100%;
  height: 32px;
  padding: 0 var(--space-3);
  background: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-2);
  font-size: var(--fs-14);
  line-height: var(--lh-14);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.ps-header .ps-search {
  position: relative;
  grid-column: 2;
  justify-self: center;
  width: 100%;
  height: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 32px;
  gap: 0;
  padding: 0;
  overflow: hidden;
  background: var(--color-canvas-default);
  cursor: pointer;
}
.ps-search:focus-within {
  border-color: #0969DA;
  box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.18);
  background: var(--color-canvas-default);
}
.ps-search__icon { color: var(--color-fg-muted); }
.ps-search__input {
  flex: 1;
  border: 0;
  background: transparent;
  outline: none;
  font: inherit;
  color: var(--color-fg-default);
}
.ps-search__input::placeholder { color: var(--color-fg-subtle); }
.ps-header .ps-search__input {
  position: absolute;
  inset: 0 32px 0 0;
  z-index: 2;
  width: calc(100% - 32px);
  height: 100%;
  padding: 0;
  color: transparent;
  caret-color: transparent;
  -webkit-text-fill-color: transparent;
  cursor: pointer;
  pointer-events: none;
}
.ps-header .ps-search__input::placeholder {
  color: transparent;
}
.ps-search__hint {
  grid-column: 1;
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 6px;
  padding: 0 var(--space-3);
  color: var(--color-fg-muted);
  white-space: nowrap;
  pointer-events: none;
}
.ps-search__prompt {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 6px;
}
.ps-search__prompt[hidden],
.ps-search__query[hidden] {
  display: none;
}
.ps-search__prompt > span:first-child,
.ps-search__query {
  overflow: hidden;
  text-overflow: ellipsis;
}
.ps-search__query {
  min-width: 0;
  color: var(--color-fg-default);
}
.ps-search__ai-icon {
  flex: 0 0 auto;
  color: var(--color-fg-muted);
}
.ps-search__submit {
  grid-column: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 100%;
  padding: 0;
  border: 0;
  border-left: 1px solid var(--color-border-default);
  background: var(--color-canvas-subtle);
  color: var(--color-fg-muted);
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast);
}
.ps-search__submit:hover,
.ps-search__submit:focus-visible {
  outline: 0;
  background: var(--color-canvas-inset);
  color: var(--color-fg-default);
}
.ps-header .ps-search__kbd {
  display: none;
}
.ps-search__kbd {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--color-fg-muted);
  padding: 1px 6px;
  background: var(--color-canvas-default);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-1);
}
.ps-search--page {
  width: min(100%, 420px);
  margin: var(--space-4) 0 var(--space-3);
}

.ps-search__progress {
  display: inline-flex;
  min-height: 20px;
  margin-bottom: var(--space-5);
  font-size: var(--fs-12);
  color: var(--color-fg-muted);
}

.ps-header__actions {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: var(--space-1);
  min-width: 0;
}
.ps-iconbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: var(--radius-2);
  color: var(--color-fg-muted);
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast);
}
.ps-iconbtn:hover { background: var(--color-canvas-subtle); color: var(--color-fg-default); }
.ps-iconbtn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.3);
}
.ps-lang {
  position: relative;
  flex: 0 0 auto;
}
.ps-lang__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: var(--color-canvas-subtle);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-2);
  color: var(--color-fg-muted);
  cursor: pointer;
  transition: background var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast), color var(--t-fast);
}
.ps-lang__button:hover {
  background: var(--color-canvas-inset);
  border-color: var(--color-border-default);
  color: var(--color-fg-default);
}
.ps-lang__button[aria-expanded="true"] {
  background: var(--color-canvas-inset);
  border-color: var(--color-border-default);
  color: var(--color-fg-default);
}
.ps-lang__button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.24);
}
.ps-lang__icon {
  display: block;
}
.ps-lang__menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  display: none;
  min-width: 176px;
  padding: var(--space-1);
  background: var(--color-canvas-default);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-2);
  box-shadow: var(--shadow-lg);
  z-index: 120;
}
.ps-lang[data-open="true"] .ps-lang__menu {
  display: block;
}
.ps-lang__item {
  display: block;
  padding: 8px 12px;
  color: var(--color-fg-default);
  font-size: var(--fs-14);
  line-height: var(--lh-14);
  border-radius: var(--radius-1);
}
.ps-lang__item:hover {
  background: var(--color-canvas-subtle);
  text-decoration: none;
}
.ps-lang__item.is-active {
  background: var(--color-canvas-subtle);
  color: var(--color-fg-default);
  font-weight: 600;
}

.ps-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: var(--radius-2);
  color: var(--color-fg-default);
  cursor: pointer;
}
.ps-hamburger:hover {
  background: var(--color-canvas-subtle);
}
.ps-hamburger__icon {
  display: block;
}

/* ============ Three-column layout ============ */
.ps-layout {
  display: grid;
  grid-template-columns:
    var(--layout-sidebar-width)
    minmax(var(--space-5), 1fr)
    minmax(0, var(--layout-content-max))
    var(--layout-content-toc-gap)
    var(--layout-toc-width)
    minmax(var(--space-5), 1fr);
  gap: 0;
  max-width: none;
  margin: 0;
  padding: var(--space-5) var(--space-5) var(--space-5) 0;
}

/* Outer aside spans full grid-row height for a continuous border */
.ps-sidebar {
  align-self: stretch;
  min-height: 0;
}
/* Desktop: keep the sidebar fixed to the viewport so it does not get
   pushed upward when the main content reaches the bottom of the page. */
.ps-sidebar__inner {
  position: fixed;
  top: var(--layout-header-height);
  left: 0;
  display: flex;
  flex-direction: column;
  width: var(--layout-sidebar-width);
  height: calc(100vh - var(--layout-header-height));
  min-height: 0;
  background: var(--color-canvas-default);
  border-right: 1px solid var(--color-border-muted);
}
.ps-sidebar__brand {
  flex: 0 0 auto;
  padding: var(--space-4) 0 var(--space-3);
  border-bottom: 1px solid var(--color-border-muted);
}
.ps-sidebar__home {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0 var(--space-4);
  font-size: var(--fs-14);
  line-height: var(--lh-14);
  color: var(--color-fg-muted);
  margin-bottom: var(--space-2);
}
.ps-sidebar__home:hover { color: var(--color-accent-fg); text-decoration: none; }
.ps-sidebar__section {
  padding: 0 var(--space-4);
  font-size: var(--fs-20);
  font-weight: 600;
  color: var(--color-fg-default);
  line-height: var(--lh-20);
}
.ps-sidebar__body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: var(--space-3) 0 var(--space-4);
}

/* Sphinx toctree output — flat tree */
.ps-tree ul { list-style: none; padding-left: 0; margin: 0; }
.ps-tree li { margin: 0; }
.ps-tree {
  --ps-tree-chevron-size: 12px;
  --ps-tree-chevron-gap: var(--space-2);
  --ps-tree-level-1-text-start: 52px;
  --ps-tree-level-2-text-start: 68px;
}
.ps-tree a {
  display: block;
  position: relative;
  padding: 6px 16px 6px 42px;
  color: var(--color-fg-default);
  font-size: var(--fs-14);
  line-height: var(--lh-14);
  border-radius: 0;
  transition: background var(--t-fast);
}
.ps-tree a:hover { background: var(--color-canvas-subtle); text-decoration: none; }
/* Only the actual current page is highlighted (GH style: gray bg + bold,
   no accent border). Parent ancestors stay neutral. */
.ps-tree a.current {
  background: var(--color-canvas-subtle);
  font-weight: 600;
  color: var(--color-fg-default);
}
.ps-tree a.current::before,
.ps-tree-row.current::before,
.ps-tree-row:has(> a.current)::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3px;
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  background: var(--color-selection-indicator);
}

.ps-tree-row {
  display: flex;
  position: relative;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  padding: 6px 16px;
  font-size: var(--fs-14);
  line-height: var(--lh-14);
  font-weight: 400;
  color: var(--color-fg-default);
  letter-spacing: 0;
  text-transform: none;
  cursor: pointer;
  border-radius: 0;
  user-select: none;
}
.ps-tree-row.current,
.ps-tree-row:has(> a.current) {
  background: var(--color-canvas-subtle);
  font-weight: 600;
}
.ps-tree-row:hover { background: var(--color-canvas-subtle); }
.ps-tree-row > a {
  flex: 1;
  min-width: 0;
  padding: 0;
  color: inherit;
  font: inherit;
  text-decoration: none;
  background: transparent;
}
.ps-tree-row > a.current {
  background: transparent;
  font-weight: inherit;
}
.ps-tree-row .ps-chevron {
  order: -1;
  width: 12px; height: 12px;
  color: var(--color-fg-muted);
  transition: transform var(--t-base);
  flex: 0 0 auto;
}
.ps-tree-row[aria-expanded="true"] .ps-chevron {
  transform: rotate(90deg);
}
.ps-tree p.caption + ul > li > a,
.ps-tree p.caption + ul > li > .ps-tree-row {
  padding-left: var(--ps-tree-level-1-text-start);
}
.ps-tree p.caption + ul > li > ul > li > a,
.ps-tree p.caption + ul > li > ul > li > .ps-tree-row {
  padding-left: var(--ps-tree-level-2-text-start);
}
.ps-tree p.caption + ul > li > .ps-tree-row {
  padding-left: calc(var(--ps-tree-level-1-text-start) - var(--ps-tree-chevron-size) - var(--ps-tree-chevron-gap));
}
.ps-tree p.caption + ul > li > ul > li > .ps-tree-row {
  padding-left: calc(var(--ps-tree-level-2-text-start) - var(--ps-tree-chevron-size) - var(--ps-tree-chevron-gap));
}
.ps-tree ul.ps-collapsed { display: none; }

/* ============ Main content ============ */
.ps-main {
  grid-column: 3;
  min-width: 0;
  max-width: var(--layout-content-max);
  border-left: 0;
  padding-left: 0;
  padding-bottom: var(--space-8);
}
.ps-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: var(--space-3);
}
.ps-article {
  font-size: var(--fs-16);
  line-height: var(--lh-16);
}
/* Tame body's first H1 (it doubles as the page title) */
.ps-article > section:first-child > h1:first-child,
.ps-article > h1:first-child {
  margin-top: 0;
  padding-bottom: 0;
  border-bottom: 0;
  font-size: var(--fs-32);
  line-height: var(--lh-32);
}

/* ============ Right TOC ============ */
.ps-toc {
  grid-column: 5;
  position: sticky;
  top: calc(var(--layout-header-height) + var(--space-4));
  align-self: start;
  max-height: calc(100vh - var(--layout-header-height) - var(--space-4));
  overflow-y: auto;
  padding-left: 0;
}
.ps-toc__inner {
  width: 100%;
}
.ps-toc__actions {
  display: flex;
  justify-content: flex-start;
  margin-bottom: var(--space-4);
}
.ps-toc__summary {
  margin-bottom: var(--space-5);
  padding: var(--space-4);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-3);
  background: var(--color-canvas-default);
}
.ps-toc__summary-title {
  color: var(--color-fg-default);
  font-size: var(--fs-24);
  line-height: var(--lh-24);
  font-weight: 600;
}
.ps-toc__summary-meta {
  margin-top: var(--space-1);
  color: var(--color-fg-muted);
  font-size: var(--fs-14);
  line-height: var(--lh-14);
}
.ps-toc__summary-divider {
  margin: var(--space-4) 0;
  border-top: 1px solid var(--color-border-muted);
}
.ps-toc__summary-next {
  display: block;
  color: var(--color-fg-default);
  font-size: var(--fs-14);
  line-height: var(--lh-14);
}
.ps-toc__summary-next:hover {
  color: var(--color-fg-default);
  text-decoration: none;
}
.ps-toc__summary-next-label {
  color: var(--color-fg-default);
  font-weight: 600;
}
.ps-toc__summary-next-title {
  color: #0969DA;
  font-weight: 600;
}
.ps-toc__summary-next:hover .ps-toc__summary-next-title {
  color: #0969DA;
  text-decoration: underline;
}
.ps-toc__title {
  font-size: var(--fs-14);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-fg-default);
}
.ps-toc ul { list-style: none; padding-left: var(--space-3); margin: 0; }
.ps-toc__body > ul { padding-left: 0; }
.ps-toc a {
  display: block;
  padding: 2px var(--space-2);
  color: var(--color-fg-muted);
  font-size: var(--fs-13);
  line-height: var(--lh-13);
  border-left: 2px solid transparent;
}
.ps-toc a:hover { color: var(--color-fg-default); text-decoration: none; }
.ps-toc a.active,
.ps-toc a[aria-current="true"] {
  color: var(--color-fg-default);
  font-weight: 600;
  border-left-color: var(--color-accent-fg);
}

/* ============ Footer (in-main column) ============ */
.ps-footer {
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-muted);
  font-size: var(--fs-12);
  line-height: var(--lh-12);
  color: var(--color-fg-muted);
  text-align: left;
}
.ps-footer a { color: var(--color-fg-muted); }
.ps-footer a:hover { color: var(--color-accent-fg); }
.ps-footer__line + .ps-footer__line { margin-top: var(--space-2); }
.ps-footer__filings {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) 0;
}
.ps-footer__sep { margin: 0 var(--space-2); color: var(--color-fg-subtle); }