/* ───────────────────────────────────────────────────────────────────
   site.css – layout flip, header restyle, scroll-color hooks.
   Loaded after components.css so it can win class-specificity ties.
   ─────────────────────────────────────────────────────────────────── */


/* ═══════════════════════════════════════════════════════════════════
   1. Right-side overlay drawer  (pixel-port of sass/_drawer.scss)
   ═══════════════════════════════════════════════════════════════════
   Drives mkdocs-material's `.md-sidebar--primary` element with the
   exact look-and-feel of the Zola drawer:

     - fixed full-height panel anchored to the right
     - 24rem max-width
     - 10rem var(--xl) inner padding (top clears header; sides 4rem)
     - default off-screen via translateX(100%), slides to translateX(0)
       when [data-md-toggle="drawer"]:checked
     - the iconic offset hard shadow `-0.25rem 0.25rem 0 0 currentColor`
     - z-index 1100 – above header (z 1000) and overlay (z 1050)
*/

/* Panel – closed by default. */
.md-sidebar--nav-overlay,
[dir=ltr] .md-sidebar--nav-overlay,
[dir=rtl] .md-sidebar--nav-overlay {
  position: fixed;
  top: 0;
  right: -3px;  /* stroke width */
  bottom: 0;
  left: auto;
  width: 100%;
  /* min() keeps the 22rem panel on desktop but caps it below the viewport on
     phones (where material's root font is 20px, so 22rem = 440px > screen),
     so the panel + backdrop show instead of going full-width. */
  max-width: min(22rem, 85vw);
  height: 100%;
  margin: 0;
  padding: 5rem 1.75rem 2rem;          /* tighter overall – top clears the close X */
  background-color: var(--background, var(--md-default-bg-color));
  color: var(--text, var(--md-default-fg-color));
  /* Offset hard shadow uses the same stroke as every other border in the design. */
  box-shadow: calc(-1 * var(--stroke-width)) var(--stroke-width) 0 0 var(--color-black);
  /* Sharp corners. Upstream darc-zensical rounds the drawer (16px) inside a
     mobile media query — "rounded only in smaller views" — but the design
     uses sharp panels everywhere, so pin it to 0 at all widths. */
  border-radius: 0;
  transform: translateX(100%);
  transition: transform var(--transition-normal, 300ms ease);
  pointer-events: none;
  z-index: 1100;
  overflow-y: auto;
}

/* Open state – checkbox-driven, no JS required. */
[data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--nav-overlay,
[dir=ltr] [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--nav-overlay,
[dir=rtl] [data-md-toggle="drawer"]:checked ~ .md-container .md-sidebar--nav-overlay {
  transform: translateX(0);
  pointer-events: auto;
}

/* Dark scheme – swap to bg-black panel + white shadow. */
body[data-md-color-scheme="slate"] .md-sidebar--nav-overlay {
  background-color: var(--bg-black);
  color: var(--color-white);
  box-shadow: calc(-1 * var(--stroke-width)) var(--stroke-width) 0 0 var(--color-white);
}

/* Close button (label so the drawer toggles via the existing checkbox). */
.drawer__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.25rem;
  height: 2.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  color: inherit;
}
.drawer__close:hover { opacity: .7; }
/* Thinner X – 1.5 stroke units in a 24-unit viewBox renders ~1.4px on
   a 2.25rem button (vs ~3px before). */
.drawer__close svg {
  width: 100%;
  height: 100%;
  stroke-width: 1.5;
}

/* Drawer body – stock `partials/nav.html` markup, restyled to match
   the Zola drawer: large flat links, always-on underline, generous
   vertical spacing. */
.md-sidebar--nav-overlay .md-sidebar__scrollwrap { display: contents; }
.md-sidebar--nav-overlay .md-sidebar__inner      { display: contents; }
.md-sidebar--nav-overlay .md-nav { width: 100%; }
.md-sidebar--nav-overlay .md-nav__title { display: none; }   /* drop the duplicated site-name label */
.md-sidebar--nav-overlay .md-nav__list { display: flex; flex-direction: column; gap: 1.25rem; }
.md-sidebar--nav-overlay .md-nav__item { margin: 0; padding: 0; }

/* Mobile: mkdocs-material turns the primary nav into absolutely-positioned
   sliding panels (`position: absolute; top:0; left:0`) with `overflow-x: auto`.
   Inside our overlay that ignores the drawer padding (content jams to the top-
   left, covering the close button) and adds horizontal scrollbars. Re-assert
   the static, in-flow flat list so it sits within the padding like at desktop. */
@media screen and (max-width: 76.1875em) {
  .md-sidebar--nav-overlay .md-nav,
  .md-sidebar--nav-overlay .md-nav--primary,
  .md-sidebar--nav-overlay .md-nav--primary > .md-nav__list {
    position: static !important;
    width: 100% !important;
    height: auto !important;
    transform: none !important;
    overflow: visible !important;
  }

  /* Drop mkdocs-material's integrated table-of-contents (it nests under the
     active page in the mobile nav drawer — the "extra TOC menu") and its
     toggle chevron, so the drawer stays a clean flat page list. */
  .md-sidebar--nav-overlay .md-nav--secondary {
    display: none !important;
  }
  .md-sidebar--nav-overlay .md-nav__link--active .md-nav__icon {
    display: none;
  }

  /* No separator lines between nav items — material adds item borders AND an
     inset box-shadow line on the list at mobile; drop both for the flat look. */
  .md-sidebar--nav-overlay .md-nav--primary .md-nav__item {
    border: 0;
  }
  .md-sidebar--nav-overlay .md-nav--primary .md-nav__list {
    box-shadow: none;
  }
}

.md-sidebar--nav-overlay .md-nav__link,
.md-sidebar--nav-overlay .md-nav__link[href]:hover:not(.md-nav__link--active),
.md-sidebar--nav-overlay .md-nav__link--active {
  background: transparent !important;
  color: inherit !important;
  border-radius: 0;
  margin: 0;
  padding: 0;
  font-size: 1.05rem;                   /* matches landing-hero teaser */
  font-weight: var(--font-weight-body); /* same weight as body (light 500 / dark 400) */
  text-decoration: none;
}

/* Underline on hover only. It goes on the inner `.md-ellipsis` span, NOT the
   `.md-nav__link` <a>: that <a> is `display: flex`, and browsers don't honor
   `text-decoration-thickness` on a flex container — the line silently falls
   back to the ~1px `auto` thickness (that's the bug we kept chasing). The span
   is a plain block, so the 3px is respected. It truncates with overflow:hidden,
   which would clip the offset underline, so let it paint. */
.md-sidebar--nav-overlay .md-nav__link .md-ellipsis {
  overflow: visible;
}
.md-sidebar--nav-overlay .md-nav__link:hover .md-ellipsis {
  text-decoration: underline;
  text-decoration-color: currentColor;
  text-underline-offset: .2em;
  text-decoration-thickness: var(--stroke-width);
}


/* ═══════════════════════════════════════════════════════════════════
   2. Always-on burger + always-on overlay backdrop
   ═══════════════════════════════════════════════════════════════════
   mkdocs-material hides the burger label at desktop (≥76.25em) and
   the .md-overlay backdrop only renders when the checkbox is checked.
   We unhide both at all widths so the drawer UX is consistent.
*/

@media screen and (min-width: 76.25em) {
  .md-header__button[for="__drawer"] {
    display: inline-flex !important;  /* always show the burger */
  }
}

/* The default backdrop rules are wrapped in a max-width:76.234375em
   media query. Promote them to all widths for the desktop overlay UX.
   Note: .md-overlay is a SIBLING of #__drawer (not a descendant of .md-container). */
.md-overlay {
  background-color: rgba(0, 0, 0, 0.5);
  height: 0;
  opacity: 0;
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  z-index: 1050;                       /* between header and drawer panel */
  transition: width 0ms .25s, height 0ms .25s, opacity var(--transition-normal, 300ms ease);
  cursor: pointer;
}
[data-md-toggle="drawer"]:checked ~ .md-overlay {
  width: 100%;
  height: 100%;
  opacity: 1;
  transition: width 0ms, height 0ms, opacity .25s;
}


/* ═══════════════════════════════════════════════════════════════════
   3. TOC moves to the LEFT at desktop
   ═══════════════════════════════════════════════════════════════════
   `.md-main__inner` is `display: flex`. Since the primary sidebar is
   `position: fixed` (out of flow), the only flex children that matter
   are the TOC and `.md-content`. Render order in main.html puts the
   TOC first, so it lands on the LEFT automatically.

   Below: tweak content margins so TOC has breathing room on the left
   and the content grows into the freed-up right side.
*/

@media screen and (min-width: 76.25em) {
  /* TOC styled as a left-rail sidebar. */
  .md-sidebar--toc-left {
    order: 0;
    padding-left: 0;
    padding-right: 1.2rem;
  }

  /* The default content margin assumes TOC on the right.
     Flip those margins so the rail sits on the left. */
  [dir=ltr] .md-sidebar--secondary:not([hidden]) ~ .md-content > .md-content__inner {
    margin-left: 1.2rem;
    margin-right: 0;
  }
  [dir=rtl] .md-sidebar--secondary:not([hidden]) ~ .md-content > .md-content__inner {
    margin-left: 0;
    margin-right: 1.2rem;
  }

  /* Content fills the rest of the row. */
  .md-content {
    flex: 1 1 auto;
    min-width: 0;
  }
}


/* ═══════════════════════════════════════════════════════════════════
   4. Header – three-column marketing layout
   ═══════════════════════════════════════════════════════════════════
   [ site name + breadcrumb ]   [ centered logo ]   [ palette · search · burger ]

   Override mkdocs-material's flex header with a 3-column grid so the
   logo stays visually centered regardless of side-content width.
*/

.md-header {
  background-color: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  transition: background-color .2s linear;
  z-index: 4;
}
/* Drop the 0.05rem hairline that mkdocs-material adds to `.md-header--shadow`. */
.md-header,
.md-header--shadow,
.md-header--lifted { box-shadow: none !important; }

.md-header__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: .5rem;
  align-items: center;
  padding-block: 1rem;
  min-height: 4.5rem;
}

/* LEFT – site title (grid column 1). Reset mkdocs-material's flex sizing
   that doesn't apply inside our grid layout. */
.md-header__title {
  margin: 0;
  padding: 0 .5rem;
  display: flex;
  align-items: center;
  gap: .3rem;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  flex: 0 1 auto;
  height: auto;
  /* Match the live header breadcrumb typography ("openaleph.org  About"):
     Inter, 16px, normal tracking, medium weight. The page-title span overrides
     weight to 700; without this the span would inherit the Sligoil mono face. */
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: normal;
}

.md-header__site-link {
  color: inherit;
  text-decoration: none;
  font-family: var(--font-sans);
  letter-spacing: inherit;
}

.md-header__breadcrumb {
  font-weight: 700;
  display: none;          /* spacing comes from .md-header__title's .3rem gap */
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
@media screen and (min-width: 40em) {
  .md-header__breadcrumb { display: inline; }
}

/* CENTER – logo (grid column 2). Always visible (overrides
   mkdocs-material's `.md-logo { display: none }` at narrow widths). */
.md-header > .md-header__inner > .md-logo {
  justify-self: center;
  margin: 0;
  padding: 0;
  display: inline-flex !important;
  align-items: center;
}
.md-header > .md-header__inner > .md-logo .md-logo__img,
.md-header > .md-header__inner > .md-logo img {
  height: 2.4rem;
  width: auto;
}

/* RIGHT – actions group (grid column 3) */
.md-header__actions {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: .25rem;
}

/* Burger always visible (overrides mkdocs-material desktop hide). */
.md-header__burger {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
}

/* Hide mkdocs-material's default left-side burger label that lives
   alongside the logo – we render our own on the right. */
.md-header > .md-header__inner > label.md-header__button[for="__drawer"]:not(.md-header__burger) {
  display: none !important;
}

/* On small screens collapse the site-name text; logo + burger keep the brand. */
@media screen and (max-width: 30em) {
  .md-header__title { display: none; }
}


/* ═══════════════════════════════════════════════════════════════════
   6. Scroll-color body classes
   ═══════════════════════════════════════════════════════════════════
   scroll-color.js toggles `.bg--{white,black,green,orange,yellow,purple}`
   on <body> and `.md-header--bg-{...}` on the header as `data-background-color`
   sections cross the viewport midpoint. Color values come from tokens.css.

   Note: smooth transition lets the swap feel cinematic rather than abrupt.
*/

body {
  background-color: var(--md-default-bg-color);
  transition: background-color .2s linear;
}

/* Light-scheme only – dark mode is intentionally locked to the DARC
   dark palette (no per-section color swap). The JS still toggles
   `bg--*` classes so search/scrollspy hooks work uniformly, but the
   visible bg is gated here to `[data-md-color-scheme="default"]`.

   Specificity bump (`body[data-md-color-scheme="default"].bg--…`)
   beats mkdocs-material's `body { background: var(--md-default-bg-color) }`
   without needing !important. */

body[data-md-color-scheme="default"].bg--white  { background-color: var(--bg-white);  color: var(--color-black); }
body[data-md-color-scheme="default"].bg--black  { background-color: var(--bg-black);  color: var(--color-white); }
body[data-md-color-scheme="default"].bg--green  { background-color: var(--bg-green);  color: var(--color-black); }
body[data-md-color-scheme="default"].bg--orange { background-color: var(--bg-orange); color: var(--color-black); }
body[data-md-color-scheme="default"].bg--yellow { background-color: var(--bg-yellow); color: var(--color-black); }
body[data-md-color-scheme="default"].bg--purple { background-color: var(--bg-purple); color: var(--color-black); }

body[data-md-color-scheme="default"] .md-header.md-header--bg-white  { background-color: var(--bg-white);  color: var(--color-black); }
body[data-md-color-scheme="default"] .md-header.md-header--bg-black  { background-color: var(--bg-black);  color: var(--color-white); }
body[data-md-color-scheme="default"] .md-header.md-header--bg-green  { background-color: var(--bg-green);  color: var(--color-black); }
body[data-md-color-scheme="default"] .md-header.md-header--bg-orange { background-color: var(--bg-orange); color: var(--color-black); }
body[data-md-color-scheme="default"] .md-header.md-header--bg-yellow { background-color: var(--bg-yellow); color: var(--color-black); }
body[data-md-color-scheme="default"] .md-header.md-header--bg-purple { background-color: var(--bg-purple); color: var(--color-black); }

/* When a section color is active, also clear .md-main's own bg so
   the body color flows through. */
body[data-md-color-scheme="default"][class*="bg--"] .md-main {
  background-color: transparent !important;
}

/* Light mode  → body text is the DARC black token (#1a1a1a).
   Dark mode   → body text is the DARC white token (#fff8f1).
   In both schemes mkdocs-material's `.md-typeset { color: var(--md-default-fg-color--light) }`
   would otherwise paint body text a dimmed gray, which we don't want
   inside cards or anywhere else.

   The weight is exposed as `--font-weight-body` (scheme-scoped) so the
   drawer nav can share the exact same value and the two never drift:
   light = medium (500), dark = regular (400). */
body[data-md-color-scheme="default"] { --font-weight-body: 500; }
body[data-md-color-scheme="slate"]   { --font-weight-body: 400; }

body[data-md-color-scheme="default"] .md-typeset,
body[data-md-color-scheme="default"] .md-typeset p,
body[data-md-color-scheme="default"] .md-typeset li,
body[data-md-color-scheme="default"] .md-typeset blockquote,
body[data-md-color-scheme="default"] .md-typeset .footnote {
  color: var(--color-black);
  font-weight: var(--font-weight-body);
}
body[data-md-color-scheme="slate"] .md-typeset,
body[data-md-color-scheme="slate"] .md-typeset p,
body[data-md-color-scheme="slate"] .md-typeset li,
body[data-md-color-scheme="slate"] .md-typeset blockquote,
body[data-md-color-scheme="slate"] .md-typeset .footnote {
  color: var(--color-white);
  font-weight: var(--font-weight-body);
}

/* Headings are bold. Mkdocs-material defaults h1/h2 to ~300 and h3/h4 to 400,
   which reads too thin for the DARC design. Same specificity as material's
   rule, but site.css loads after it so this wins. (h1 left to the hero /
   page-title styling.) */
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  font-weight: 700;
}

/* Inline links inherit the surrounding text color (no orange accent).
   Mkdocs-material defaults to `--md-typeset-a-color` for `<a>` and
   `--md-accent-fg-color` on hover – both override here. */
.md-typeset a,
.md-typeset a:hover {
  color: inherit;
}

/* Underline is the only affordance for links (neither mkdocs-material nor
   upstream darc-zensical underlines `.md-typeset a`). Scope it to the page
   CONTENT only: the footer, social icons and the nav drawer also live inside
   `.md-typeset` containers, so a bare `.md-typeset a` rule leaks the underline
   onto them. Buttons, header permalinks and blog post-title links (`.toclink`)
   opt out — the latter are headings, not body links. */
.md-content a:not(.btn):not(.headerlink):not(.toclink) {
  text-decoration: underline;
  text-decoration-color: currentColor;
  text-decoration-thickness: 2px;
  text-underline-offset: .2em;
}

/* Blog overview: each post excerpt renders as a <blockquote>. In the listing
   preview show it as plain paragraph text — drop the quote border and indent.
   Compound `.md-typeset` to match the specificity of material's directional
   `[dir=ltr] .md-typeset blockquote` rule (site.css wins the tie by order). */
.md-post__content.md-typeset blockquote {
  border-left: 0;
  border-right: 0;
  padding-left: 0;
  padding-right: 0;
}

/* Blog post detail page (`.md-content--post`, added by the blog plugin only on
   individual posts): set blockquotes in italic. */
.md-content--post blockquote {
  font-style: italic;
}

/* Body unordered-list bullets → the DARC check mark (inline SVG marker).
   Scoped to content; the inline `::before` + negative margin gives a hanging
   marker without needing `position` on the <li>. Card grids (`.grid`) and
   task lists keep their own markers (the ::before is reset there). */
.md-content .md-typeset ul > li {
  list-style: none;
}
.md-content .md-typeset ul > li::before {
  content: "";
  display: inline-block;
  width: 1.05em;
  height: 1.05em;
  margin-left: -1.6em;
  margin-right: .55em;
  vertical-align: -.2em;
  background: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 72 72' fill='none'><path d='M61.4999 23.3001L53.4869 15.2871L27.7769 40.9971L18.5169 31.7371L10.5039 39.7501L27.9239 57.1901L61.4999 23.3001Z' fill='white'/><path d='M10.5 39.7599L27.92 57.1999L61.5 23.3099L53.487 15.2969L27.777 41.0069L18.517 31.7469L10.5 39.7599Z' stroke='%231A1A1A' stroke-width='3' stroke-miterlimit='10' stroke-linecap='round' stroke-linejoin='round'/></svg>") center / contain no-repeat;
}
/* Card grids and task lists are not prose bullet lists — no check mark. */
.md-content .md-typeset .grid li::before,
.md-content .md-typeset .task-list-item::before {
  content: none;
}