/* cmenpy "Paper" theme — typography, layout and components.
 *
 * Values live in tokens.css; brand marks (wordmark, hero, logo sizing) in
 * brand.css. This file only consumes the --cp-* tokens.
 */

/* ------------------------------ Type and measure ---------------------------- */

body {
  font-family: var(--cp-font-ui);
}

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

/* Journal: one serif carries both titles and prose. Its full Greek and math
 * coverage means μ, λ and arrows set natively instead of falling back. */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4,
.md-typeset h5,
.md-typeset h6 {
  font-family: var(--cp-font-text);
  color: var(--cp-ink);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.md-typeset h1 {
  font-size: 2em;
  line-height: 1.25;
}

.md-typeset h2 {
  font-size: 1.35em;
  line-height: 1.35;
}

/* API symbol headings (mkdocstrings) are identifiers, not prose titles, so
 * they keep the monospace face — matching the signature block right below. */
.md-typeset h2.doc-heading {
  font-family: var(--cp-font-mono);
  font-weight: 600;
  font-size: 1.3em;
  letter-spacing: -0.01em;
}

/* Keep the prose measure short enough to read comfortably (~80ch). Material's
 * root font-size is 125%, so rem values here run ~1.25x their nominal size. */
.md-grid {
  max-width: 66rem;
}

.md-content__inner {
  position: relative;
  max-width: var(--cp-measure);
}

/* The edit pencil floats right by default; as a float it shrinks the hero H1's
 * formatting context and knocks the wordmark off-center. Pinning it to the
 * inner content box keeps the same visual spot without a float. */
.md-content__button {
  position: absolute;
  top: 1.6rem;
  right: 0;
  float: none;
  margin: 0;
}

/* ------------------------------ Content path -------------------------------- */

/* Breadcrumbs render above the article; align them with its text column. */
.md-path {
  max-width: var(--cp-measure);
  margin: 1.1rem 1.2rem 0;
  padding: 0;
  font-family: var(--cp-font-ui);
  font-size: 0.62rem;
  line-height: 1.5;
  color: var(--cp-muted);
}

.md-path__link {
  color: inherit;
  border-bottom: 0;
}

.md-path__link:hover {
  color: var(--cp-ink);
}

@media screen and (max-width: 76.234375em) {
  .md-path {
    margin: 0.8rem 0.8rem 0;
  }
}

/* ---------------------------------- Chrome ---------------------------------- */

/* The header is the page: no colored band, no shadow, one warm rule. */
.md-header,
.md-hero,
.md-footer,
.md-footer-meta {
  background: var(--cp-bg);
  color: var(--cp-ink);
}

.md-header {
  border-bottom: var(--cp-rule);
  transition: transform 0.2s ease;
}

/* Auto-hide on scroll down (scripts.js toggles the class). */
.md-header--hidden {
  transform: translateY(-100%);
}

.md-header--shadow,
.md-footer--shadow,
.md-tabs {
  box-shadow: none;
}

.md-hero {
  border-bottom: var(--cp-rule);
}

/* The title slot is the flex spacer that keeps the right-hand controls
 * aligned; it carries the section path on wide screens. */
.md-header__title {
  height: var(--cp-header-height);
  line-height: var(--cp-header-height);
}

.md-header__path {
  font-family: var(--cp-font-ui);
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--cp-muted);
  white-space: nowrap;
}

.md-header__sep {
  margin: 0 0.45em;
  color: color-mix(in srgb, var(--cp-muted) 55%, transparent);
}

@media screen and (max-width: 60em) {
  .md-header__title {
    visibility: hidden;
  }
}

/* Search sits in the header as a quiet field, not an inverted block. */
.md-search__form {
  position: relative;
  background: var(--cp-surface);
  border: var(--cp-rule);
  border-radius: 6px;
}

.md-search__input {
  color: var(--cp-ink);
  padding-right: 2.9rem;
}

/* Keyboard hint, injected by scripts.js as data-hint (⌘K / Ctrl K). */
.md-search__form::after {
  content: attr(data-hint);
  position: absolute;
  top: 50%;
  right: 0.5rem;
  transform: translateY(-50%);
  padding: 0.12rem 0.28rem;
  border: var(--cp-rule);
  border-radius: 4px;
  font-family: var(--cp-font-ui);
  font-size: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--cp-muted);
  pointer-events: none;
}

@media screen and (max-width: 76.234375em) {
  .md-search__form::after {
    display: none;
  }
}

.md-search__input::placeholder,
.md-search__input ~ .md-search__icon,
.md-search__icon[for="__search"] {
  color: var(--cp-muted);
}

.md-search__input:hover,
.md-search__input:focus,
.md-search__input:focus-within {
  background: var(--cp-surface);
}

.md-search__scrollwrap {
  background: var(--cp-surface);
  box-shadow: 0 2px 10px color-mix(in srgb, var(--cp-ink) 8%, transparent);
}

/* The repository card is the noisiest thing in the bar (it also injects live
 * GitHub stats at runtime). The repo stays reachable via the footer. */
.md-header__source {
  display: none;
}

/* Navigation: quiet links, one accent for the active page. */
.md-nav {
  background: transparent;
}

.md-nav__title {
  background: var(--cp-bg);
  color: var(--cp-ink);
  box-shadow: none;
}

.md-nav__link,
.md-nav__link--index a {
  color: var(--cp-muted);
  scroll-margin-top: 0;
}

.md-nav__link:focus,
.md-nav__link:hover {
  color: var(--cp-ink);
}

.md-nav__link--active,
.md-nav__item .md-nav__link--active {
  color: var(--cp-accent);
  font-weight: 600;
  box-shadow: inset 2px 0 0 var(--cp-accent);
}

/* --------------------- Primary navigation: styled contents ------------------ */

/* Top-level groups become a numbered table of contents. Material tags them
 * .md-nav__item--section; the numbers are CSS counters, so reordering the nav
 * renumbers itself. The rail, dots and sticky heads apply to the fixed
 * desktop sidebar; the mobile drawer keeps numbering + clean drill-in. */
.md-nav--primary > .md-nav__list {
  counter-reset: cp-sec;
}

.md-nav--primary .md-nav__item--section {
  counter-increment: cp-sec;
}

.md-nav--primary .md-nav__item--section > .md-nav__link {
  display: flex;
  align-items: baseline;
  margin-top: 1.2rem;
  padding: 0.45rem 0.6rem 0.45rem 0;
  border-top: var(--cp-rule);
  color: var(--cp-ink);
  font-family: var(--cp-font-text);
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.md-nav--primary .md-nav__item--section > .md-nav__link::before {
  content: counter(cp-sec, decimal-leading-zero);
  flex: none;
  margin-right: 0.6rem;
  color: var(--cp-muted);
  font-family: var(--cp-font-ui);
  font-size: 0.5rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

.md-nav--primary .md-nav__item--section > .md-nav__link > .md-nav__icon {
  margin-left: auto;
}

/* Home and Changelog sit outside the numbering as bookends; without a rail
 * under them, the inset-bar marker would dangle, so they get the plain
 * accent text. The last item closes the list with a hairline. */
.md-nav--primary > .md-nav__list > .md-nav__item:not(.md-nav__item--section) > .md-nav__link {
  box-shadow: none;
}

.md-nav--primary > .md-nav__list > .md-nav__item:last-child:not(.md-nav__item--section) {
  margin-top: 1.2rem;
  padding-top: 0.35rem;
  border-top: var(--cp-rule);
}

@media screen and (min-width: 60em) {
  /* The head pins while its own section scrolls past. */
  .md-nav--primary .md-nav__item--section > :is(.md-nav__link, .md-nav__container) {
    position: sticky;
    top: 0;
    z-index: 2;
    background: var(--cp-bg);
  }

  /* Hairline rails: one under each section, and one under each nested group,
   * so an active page at any depth sits beside its own line. */
  .md-nav--primary .md-nav__item--section > .md-nav,
  .md-nav--primary .md-nav__item--section .md-nav__item--nested > .md-nav {
    margin-left: 0.2rem;
    padding-left: 0.9rem;
    border-left: var(--cp-rule);
  }

  /* Material hides overflow on nav lists for its drawer collapse; the dot
   * sits on the rail, outside each item's box, so the rail lists must let it
   * through. */
  .md-nav--primary .md-nav__item--section .md-nav__list {
    overflow: visible;
  }

  .md-nav--primary .md-nav__item--section .md-nav__item {
    position: relative;
  }

  /* The active page is punched onto the rail as a dot, not a bar. The marker
   * rides on the <li> because .md-nav__link clips to its ellipsis box. */
  .md-nav--primary .md-nav__item--section .md-nav__item > a.md-nav__link--active {
    color: var(--cp-accent);
    box-shadow: none;
  }

  .md-nav--primary .md-nav__item--section .md-nav__item:has(> a.md-nav__link--active)::before {
    content: "";
    position: absolute;
    top: 50%;
    left: -1.7rem;
    width: 0.3rem;
    height: 0.3rem;
    border-radius: 50%;
    background: var(--cp-accent);
    transform: translateY(-50%);
  }

  /* A nested group whose index page is the current page (navigation.indexes):
   * its <li> spans the whole expanded subtree, so 50% would land mid-list.
   * The marker rides the head-row link (positioned here) — top: 0 aligns it
   * with the group's name. Scoped to .md-nav__item--nested so top-level
   * section heads never get a dot: they have no rail and are marked by the
   * accent text instead. */
  .md-nav--primary .md-nav__item--section .md-nav__item--nested > .md-nav__container {
    position: relative;
  }

  .md-nav--primary .md-nav__item--section .md-nav__item--nested > .md-nav__container > a.md-nav__link--active::before {
    content: "";
    position: absolute;
    top: 0.9rem; /* head-row height / 2 - dot / 2 (≈34px row, 6px dot) */
    left: -1.65rem;
    width: 0.3rem;
    height: 0.3rem;
    border-radius: 50%;
    background: var(--cp-accent);
  }

  /* A section whose index page is the current page (navigation.indexes): the
   * head renders as a link wrapped in .md-nav__container, so it matches
   * neither the head rule nor the leaf rule above — and would keep Material's
   * global inset bar. Drop the bar, keep the accent. */
  .md-nav--primary .md-nav__item--section .md-nav__container .md-nav__link--active {
    color: var(--cp-accent);
    box-shadow: none;
  }

  /* Nested groups inside a section (Models under Guides): quiet ink, no box. */
  .md-nav--primary .md-nav__item--section .md-nav__item--nested > .md-nav__link {
    color: var(--cp-ink);
    font-weight: 600;
  }
}

/* Table of contents as margin notes: a hairline rail, an accent on the
 * section in view, no boxes. */
.md-nav--secondary .md-nav__title {
  background: transparent;
  color: var(--cp-muted);
  font-family: var(--cp-font-ui);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0;
  padding-left: 0.9rem;
}

.md-nav--secondary > .md-nav__list {
  border-left: var(--cp-rule);
}

.md-nav--secondary .md-nav__link {
  margin-left: -1px;
  padding-left: 0.9rem;
  border-left: 2px solid transparent;
}

.md-nav--secondary .md-nav__link--active {
  color: var(--cp-accent);
  border-left-color: var(--cp-accent);
  box-shadow: none;
}

/* -------------------------------- Content ---------------------------------- */

.md-typeset {
  font-family: var(--cp-font-text);
  font-size: 0.85rem; /* ~17px at Material's 125% root — roomy for the serif */
  line-height: 1.75;
}

.md-typeset a {
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--cp-accent) 30%, transparent);
}

.md-typeset a:hover {
  border-bottom-color: var(--cp-accent);
}

/* Inline code: a flat tint, no pill. */
.md-typeset code {
  background: var(--cp-code);
  border-radius: 4px;
  font-size: 0.82em;
}

.md-typeset pre {
  background: var(--cp-code);
  border: var(--cp-rule);
  border-radius: var(--cp-radius);
}

.md-typeset pre > code {
  background: none;
  border-radius: 0;
}

.md-clipboard {
  color: var(--cp-muted);
}

.md-clipboard:focus,
.md-clipboard:hover {
  color: var(--cp-accent);
}

/* Tables: hairline rules only. */
.md-typeset table:not([class]) {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  font-size: 0.74em;
}

.md-typeset table:not([class]) th {
  border-bottom: var(--cp-rule);
  color: var(--cp-muted);
  font-size: 0.9em;
  font-weight: 600;
}

.md-typeset table:not([class]) td {
  border-bottom: var(--cp-rule);
}

.md-typeset .admonition,
.md-typeset details {
  border-radius: 0 6px 6px 0;
  margin: 1.4em 0;
}

/* Admonitions: single-tone panel with an accent rule. Material hardcodes one
 * color per type, so repeat the type list to match its specificity and win. */
.md-typeset :is(.admonition, details):is(.note, .abstract, .info, .tip, .success, .question, .warning, .failure, .danger, .bug, .example, .quote) {
  border: var(--cp-rule);
  border-left: 2px solid var(--cp-accent);
  background: var(--cp-surface);
  box-shadow: none;
  color: var(--cp-ink);
}

.md-typeset :is(.admonition, details):is(.note, .abstract, .info, .tip, .success, .question, .warning, .failure, .danger, .bug, .example, .quote):focus-within {
  box-shadow: 0 0 0 0.2rem var(--md-accent-fg-color--transparent);
}

.md-typeset :is(.admonition, details):is(.note, .abstract, .info, .tip, .success, .question, .warning, .failure, .danger, .bug, .example, .quote) > :is(.admonition-title, summary) {
  background-color: transparent;
  border-bottom: 0;
  color: var(--cp-accent);
  font-weight: 700;
}

.md-typeset :is(.admonition, details):is(.note, .abstract, .info, .tip, .success, .question, .warning, .failure, .danger, .bug, .example, .quote) > :is(.admonition-title, summary) > .md-icon,
.md-typeset :is(.admonition, details):is(.note, .abstract, .info, .tip, .success, .question, .warning, .failure, .danger, .bug, .example, .quote) > :is(.admonition-title, summary)::before {
  background-color: var(--cp-accent);
}

/* Selection and the annotation/footnote highlights follow the accent. */
::selection {
  background: var(--md-accent-fg-color--transparent);
}

.md-typeset .footnote li:target,
.md-typeset [id^="fn:"]:target {
  background: var(--md-accent-fg-color--transparent);
}

/* ------------------------------ Craft and a11y ------------------------------ */

/* One consistent focus ring on the accent. */
:where(a, button, input, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--cp-accent);
  outline-offset: 2px;
}

/* Honor the user's motion preference everywhere. */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Print: paper is what this theme is made of, but a plain page prints better. */
@media print {
  [data-md-color-scheme="default"],
  [data-md-color-scheme="slate"] {
    --cp-bg: #fff;
    --cp-surface: #fff;
    --cp-ink: #000;
    --cp-muted: #333;
    --cp-accent: #000;
    --cp-line: #ccc;
    --cp-code: #fff;
  }

  .md-header,
  .md-hero,
  .md-sidebar,
  .md-tabs,
  .md-search,
  .md-path,
  .md-footer__inner,
  .md-footer-meta,
  .md-footer-nav,
  .md-clipboard,
  .md-top,
  .md-footer,
  .md-header__source,
  .md-banner,
  .md-sidebar__scrollwrap,
  a.headerlink {
    display: none !important;
  }

  .md-content {
    margin: 0;
    max-width: 100%;
  }

  .md-content__inner {
    max-width: 100%;
  }

  .md-grid {
    max-width: 100%;
  }

  .md-typeset {
    font-size: 11pt;
    color: #000;
  }

  .md-typeset a {
    color: #000;
    border-bottom: 0;
  }

  .md-typeset pre,
  .md-typeset code {
    white-space: pre-wrap;
    background: #fff;
    border: 1px solid #ccc;
    color: #000;
  }
}