/* --- Wider layout: expand page grid + sidebars -------------------------
 *
 * Material defaults: .md-grid max-width 61rem, sidebar 12.1rem.
 * We widen the grid to 80rem and bump sidebars to ~18rem (~50% wider)
 * so the content area has more breathing room on large monitors.
 * ----------------------------------------------------------------------- */

@media screen and (min-width: 76.25em) {
  .md-grid {
    max-width: 80rem;
  }

  .md-sidebar {
    width: 18.1rem;
  }

  /* Primary sidebar: match the new width everywhere Material hard-codes
     the old 12.1rem value (transforms, offsets, left/right). */
  .md-sidebar--primary {
    width: 18.1rem;
  }

  /* Material sets padding-right: calc(100% - 11.5rem) on the sidebar
     inner wrapper (in @supports ::-webkit-scrollbar) to reserve space
     for the scrollbar gutter.  11.5rem = old 12.1rem sidebar − 0.6rem.
     Update to 17.5rem = 18.1rem − 0.6rem so content fills the wider
     sidebar instead of being squeezed to the old width. */
  .md-sidebar__inner {
    padding-right: calc(100% - 17.5rem) !important;
  }

  [dir=rtl] .md-sidebar__inner {
    padding-left: calc(100% - 17.5rem) !important;
    padding-right: 0 !important;
  }
}

/* On slightly smaller desktops (60-76em), use a moderate widening so the
   layout doesn't jump straight from 61rem to cramped sidebars. */
@media screen and (min-width: 60em) and (max-width: 76.1875em) {
  .md-grid {
    max-width: 72rem;
  }
}

.md-typeset .highlight,
.md-typeset .highlight pre,
.md-typeset .highlight code {
  background-color: #000;
  color: #fff;
}

/* --- Section heading hierarchy -------------------------------------------
 *
 * Goals:
 *   - Every heading level is noticeably larger than its body text.
 *   - Higher-level headings are progressively larger than lower ones.
 *   - H1 is prominent but not oversized.
 *   - Lower-level headings (H4-H6) are bold/italic so they still read as
 *     headings even though their absolute size is smaller.
 *
 * Base body text in .md-typeset is 0.8 rem (~12.8 px).
 * The scale below keeps every heading clearly above that baseline while
 * maintaining a visible step between adjacent levels.
 * ----------------------------------------------------------------------- */

.md-typeset h1 {
  font-size: 2em;          /* ~25.6 px */
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 0 0 0.75em;
  color: var(--md-default-fg-color);
}

.md-typeset h2 {
  font-size: 1.7em;        /* ~21.8 px */
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.3;
  margin: 1.4em 0 0.6em;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  padding-bottom: 0.3em;
}

.md-typeset h3 {
  font-size: 1.4em;        /* ~17.9 px */
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
  margin: 1.4em 0 0.6em;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  padding-bottom: 0.3em;
}

.md-typeset h4 {
  font-size: 1.2em;        /* ~15.4 px */
  font-weight: 700;
  line-height: 1.4;
  margin: 1.2em 0 0.5em;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  padding-bottom: 0.3em;
}

.md-typeset h5 {
  font-size: 1.15em;       /* ~14.7 px */
  font-weight: 700;
  font-style: italic;
  text-transform: none;
  line-height: 1.4;
  margin: 1.2em 0 0.4em;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  padding-bottom: 0.3em;
}

.md-typeset h6 {
  font-size: 1.1em;        /* ~14.1 px */
  font-weight: 700;
  font-style: italic;
  text-transform: none;
  letter-spacing: 0.01em;
  line-height: 1.4;
  margin: 1.1em 0 0.4em;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  padding-bottom: 0.3em;
  color: var(--md-default-fg-color);
}

/* --- Compact table cells --------------------------------------------------
 *
 * MkDocs Material's default table padding is generous.  Tighten it so
 * wide tables (e.g. the automation-profile matrix) render without
 * forcing column headers to word-wrap.
 * ----------------------------------------------------------------------- */

/* First column never wraps — sized to its content. */
.md-typeset table:not([class]) th:first-child,
.md-typeset table:not([class]) td:first-child {
  white-space: nowrap;
}

.md-typeset table:not([class]) th {
  min-width: 0;
}

/* --- Navbar dropdown menus ---------------------------------------------------
 *
 * Custom tabs.html renders top-level sections (Development, Reference, ADRs)
 * as tabs with hover-activated dropdown menus listing their child pages.
 * Single-page tabs (Specification, Timeline, FAQ) have no dropdown.
 * ----------------------------------------------------------------------- */

/* Override Material's overflow/containment on the tabs bar and its list.
 * Material sets overflow:auto and contain:content which clip absolutely-
 * positioned children (our dropdown menus).  We need visible overflow
 * so the dropdowns can extend below the tab bar.
 *
 * Material's selectors:
 *   .md-tabs           { overflow: auto }           — (0,1,0)
 *   .md-tabs__list      { contain: content; overflow: auto } — (0,1,0)
 *
 * Counter-selectors beat them by nesting under .md-header: */
.md-header .md-tabs {
  overflow: visible;
}

.md-header .md-tabs .md-tabs__list {
  overflow: visible;
  contain: none;
}

/* Dropdown container — positioned below the tab item */
.md-tabs__item--dropdown {
  position: relative;
}

.md-tabs__dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 16rem;
  max-height: 70vh;
  overflow-y: auto;
  list-style: none;
  margin: 0;
  padding: .4rem 0;
  background: var(--md-primary-fg-color);
  border-radius: 0 0 .2rem .2rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  z-index: 100;
}

/* Show dropdown on hover and when the tab is focused within */
.md-tabs__item--dropdown:hover > .md-tabs__dropdown,
.md-tabs__item--dropdown:focus-within > .md-tabs__dropdown {
  display: block;
}

/* Dropdown link items */
.md-tabs__dropdown-link {
  display: block;
  padding: .4rem 1rem;
  color: var(--md-primary-bg-color);
  font-size: .7rem;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color .15s;
}

.md-tabs__dropdown-link:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

.md-tabs__dropdown-link--active {
  font-weight: 700;
}

/* Nested section groups inside the dropdown */
.md-tabs__dropdown-group {
  list-style: none;
}

.md-tabs__dropdown-label {
  display: block;
  padding: .5rem 1rem .2rem;
  font-size: .6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  opacity: .7;
  color: var(--md-primary-bg-color);
}

.md-tabs__dropdown-group > ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

/* Small caret indicator on tabs that have dropdowns */
.md-tabs__dropdown-caret {
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: .3rem;
  vertical-align: middle;
  border-left: .25rem solid transparent;
  border-right: .25rem solid transparent;
  border-top: .25rem solid currentcolor;
  opacity: .6;
}

/* --- Left sidebar: show only the TOC (desktop) --------------------------------
 *
 * With navigation.tabs + toc.integrate, the left sidebar contains both the
 * sub-page navigation for the active tab AND the integrated TOC for the
 * current page.  We hide all non-TOC elements so the left sidebar displays
 * only the Table of Contents.
 *
 * The TOC is always rendered inside <nav class="md-nav--secondary">.
 * Everything else in the primary sidebar is page navigation.
 *
 * DESKTOP ONLY (>= 76.25em) — on mobile, the drawer navigation is used
 * and must remain fully functional.
 * ----------------------------------------------------------------------- */

@media screen and (min-width: 76.25em) {
  /* Hide all top-level nav items in the sidebar — these are the page
   * links within the active tab section (or the tab items themselves
   * if the tab has no children). */
  .md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item {
    display: none;
  }

  /* But show items on the ancestor path to the current page — these
   * contain the nested .md-nav--secondary (TOC). */
  .md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item--active {
    display: block;
  }

  /* Within active section wrappers, hide sibling page links (only the
   * active child with its TOC should be visible).
   *
   * IMPORTANT: the :not(.md-nav--secondary) guard prevents this rule
   * from also matching .md-nav--secondary (the TOC nav), whose <li>
   * children are plain .md-nav__item without --active and would
   * otherwise be hidden. */
  .md-sidebar--primary .md-nav__item--active > .md-nav:not(.md-nav--secondary) > .md-nav__list > .md-nav__item:not(.md-nav__item--active) {
    display: none;
  }

  /* Hide the page-link labels / headings on active items so only the
   * TOC tree remains visible.  This targets:
   *   - Section headings (<label class="md-nav__link">)
   *   - Page links (<a class="md-nav__link">)
   *   - The __toc checkbox and its label
   *   - The section title inside nested navs
   * but NOT anything inside .md-nav--secondary (the TOC itself). */
  .md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item--active > .md-nav__toggle,
  .md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item--active > label.md-nav__link,
  .md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item--active > a.md-nav__link,
  .md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item--active > .md-nav__container,
  .md-sidebar--primary .md-nav--primary > .md-nav__list > .md-nav__item--active > nav > .md-nav__title {
    display: none;
  }

  /* Within nested sections (level 2+), hide the active page's own link
   * and __toc machinery, leaving only the .md-nav--secondary TOC. */
  .md-sidebar--primary .md-nav__item--active > #__toc,
  .md-sidebar--primary .md-nav__item--active > label[for="__toc"],
  .md-sidebar--primary .md-nav__item--active > a.md-nav__link,
  .md-sidebar--primary .md-nav__item--active > .md-nav__container {
    display: none;
  }

  /* Force the TOC (md-nav--secondary) visible.
   *
   * Material's rules that hide or collapse the TOC:
   *
   *   A) .md-nav--primary .md-nav__link[for=__toc]~.md-nav
   *      → display: none                               — (0,4,0)
   *
   *   B) .md-nav__toggle~.md-nav  (desktop media query)
   *      → display: grid; opacity: 0; visibility: collapse — (0,2,0)
   *
   * Material's integrated rule tries to re-show it:
   *   C) .md-nav--integrated>.md-nav__list>.md-nav__item--active .md-nav--secondary
   *      → display: block; opacity: 1; visibility: visible — (0,4,0)
   *
   * A and C tie at (0,4,0), so cascade order decides — and A often
   * wins.  We counter with higher-specificity selectors that
   * guarantee the TOC is always visible without using !important.
   */

  /* Counter rule A — specificity (0,6,0) beats (0,4,0).
   * Directly negates the sibling-combinator hiding rule. */
  .md-sidebar--primary .md-nav--primary .md-nav__link[for="__toc"] ~ nav.md-nav--secondary {
    display: block;
    opacity: 1;
    visibility: visible;
  }

  /* General fallback for integrated mode — specificity (0,5,0)
   * beats rule B (0,2,0) and ties/beats rule C (0,4,0) by being
   * loaded later. */
  .md-sidebar--primary .md-nav--primary.md-nav--integrated .md-nav__item--active .md-nav--secondary {
    display: block;
    opacity: 1;
    visibility: visible;
  }

  /* Remove the top-level sidebar title ("Navigation" label) on desktop
   * since we no longer show page navigation in the sidebar. */
  .md-sidebar--primary .md-nav--primary > .md-nav__title {
    display: none;
  }
}

/* --- Collapsible TOC in integrated sidebar --- */

/* Container for the link row: link text + toggle chevron side by side.
 * Scoped to .md-nav--secondary (active page TOC) so it does not affect
 * primary nav section headings which use Material's native <label> +
 * checkbox. */
.md-nav--secondary .md-nav__item--nested > .md-nav__link {
  display: flex;
  align-items: center;
}

/* Chevron toggle button injected by JS into TOC sub-items.
 * Styled to match Material's native .md-nav__icon chevron exactly so
 * all expand/collapse indicators look the same across the sidebar. */
.toc-toggle {
  flex-shrink: 0;
  width: .9rem;
  height: .9rem;
  margin-left: auto;
  cursor: pointer;
  border: none;
  background: none;
  border-radius: 100%;
  transition: background-color .25s;
}

.toc-toggle:hover {
  background-color: var(--md-accent-fg-color--transparent);
}

/* Use the same SVG mask-image chevron as Material's .md-nav__icon::after */
.toc-toggle::after {
  content: "";
  display: inline-block;
  width: 100%;
  height: 100%;
  background-color: currentcolor;
  border-radius: 100%;
  -webkit-mask-image: var(--md-nav-icon--next);
  mask-image: var(--md-nav-icon--next);
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-size: contain;
  mask-size: contain;
  vertical-align: -.1rem;
  transition: transform .25s;
  /* Default: expanded (pointing down) */
  transform: rotate(90deg);
}

/* Rotate arrow to point right when collapsed */
.toc-collapsed > .md-nav__link > .toc-toggle::after {
  transform: rotate(0deg);
}

/* Hide/show nested nav list when collapsed (TOC items only).
 * Desktop only — on mobile the TOC is rendered within Material's drawer
 * and must remain in the render tree for correct scroll behaviour. */
@media screen and (min-width: 76.25em) {
  .md-nav--secondary .md-nav__item--nested.toc-collapsed > .md-nav {
    display: none;
  }

  .md-nav--secondary .md-nav__item--nested > .md-nav {
    display: block;
  }
}

/* --- Mobile sidebar scroll fix -----------------------------------------------
 *
 * On mobile (< 76.25em), Material renders the primary sidebar as a
 * slide-out drawer.  The custom toc-collapse.js script (which is
 * desktop-only) restructures nav items and collapses sections, but on
 * mobile we rely on Material's native drawer navigation.  Ensure the
 * drawer's content is scrollable when there are more items than fit on
 * screen — this was broken because the desktop-only display:none rules
 * were interfering with the scroll container height computation, and
 * the nav containers lacked explicit overflow declarations.
 * ----------------------------------------------------------------------- */

@media screen and (max-width: 76.1875em) {
  /* Ensure the sidebar drawer inner wrapper scrolls vertically */
  .md-sidebar--primary .md-sidebar__inner {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Ensure each nav level within the mobile drawer can scroll when it
   * exceeds the viewport height.  Material uses absolute positioning
   * and transforms for the drill-down layers; this ensures each layer
   * is independently scrollable. */
  .md-sidebar--primary .md-nav__list {
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Prevent the overall nav from clipping its children —
   * Material's mobile drawer needs visible overflow on the
   * horizontal axis for the slide animation, and auto on the
   * vertical axis for scrolling. */
  .md-sidebar--primary .md-nav--primary {
    overflow: visible;
  }

  /* Undo any items hidden by the JS-driven toc-collapsed class that
   * may have been applied before the mobile guard kicks in (race
   * condition on resize or orientation change).
   *
   * The desktop hiding rule is:
   *   .md-nav--secondary .md-nav__item--nested.toc-collapsed > .md-nav
   *     { display: none }  — (0,3,0), inside a ≥76.25em media query
   *
   * This mobile rule applies inside a <76.1875em media query, so the
   * two never conflict — no !important needed.  We bump specificity
   * slightly for safety against any other rules. */
  .md-sidebar--primary .md-nav--secondary .toc-collapsed > .md-nav {
    display: block;
  }
}

/* --- Diagram lightbox (fullscreen on click) --------------------------------
 *
 * Kroki diagrams (<img alt="Kroki">) get a pointer cursor to hint they are
 * clickable.  Clicking one opens a fullscreen overlay with the diagram
 * scaled to fill the viewport.  An X button or the Escape key closes it.
 * ----------------------------------------------------------------------- */

/* Make diagram images look clickable */
img[alt="Kroki"] {
  cursor: zoom-in;
  transition: opacity 0.15s ease;
}

img[alt="Kroki"]:hover {
  opacity: 0.85;
}

/* Fullscreen overlay */
.diagram-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
  padding: 2rem;
}

.diagram-lightbox.active {
  opacity: 1;
  visibility: visible;
}

/* The enlarged diagram image */
.diagram-lightbox img {
  max-width: 95vw;
  max-height: 92vh;
  object-fit: contain;
  border-radius: 4px;
  /* Invert for dark backgrounds so SVG lines stay visible */
  filter: drop-shadow(0 2px 20px rgba(0, 0, 0, 0.5));
  background: #fff;
  padding: 1rem;
}

/* Close button */
.diagram-lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
  z-index: 10000;
}

.diagram-lightbox-close:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.diagram-lightbox-close:active {
  transform: scale(0.95);
}

/* ── TUI Mockup Diagrams ─────────────────────────────────────────
 *
 * Renders TUI specification ASCII mockups as styled terminal windows
 * with Dracula-inspired coloring.  Span classes map to the TUI's
 * semantic color tokens ($primary, $secondary, $success, etc.).
 *
 * Usage in markdown:
 *   <div class="tui-mockup"><pre>
 *   ┌───────────┐
 *   │ <span class="tui-primary">hello</span>     │
 *   └───────────┘</pre></div>
 * ----------------------------------------------------------------------- */

.tui-mockup {
  margin: 1.5em 0;
}

.tui-mockup pre {
  /* Dracula palette */
  --tui-fg: #f8f8f2;
  --tui-bg: #21222c;
  --tui-primary: #8be9fd;
  --tui-secondary: #bd93f9;
  --tui-success: #50fa7b;
  --tui-warning: #f1fa8c;
  --tui-error: #ff5555;
  --tui-dim: #6272a4;
  --tui-border-color: #44475a;

  background: var(--tui-bg) !important;
  color: var(--tui-fg) !important;
  font-family: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', 'Consolas', 'Monaco', monospace;
  font-size: 0.72rem;
  line-height: 1.45;
  padding: 0.8rem 1rem;
  border-radius: 6px;
  border: 1px solid var(--tui-border-color);
  overflow-x: auto;
  white-space: pre;
  margin: 0;
}

/* Semantic color spans */
.tui-mockup .tui-primary       { color: var(--tui-primary); }
.tui-mockup .tui-secondary     { color: var(--tui-secondary); }
.tui-mockup .tui-success       { color: var(--tui-success); }
.tui-mockup .tui-warning       { color: var(--tui-warning); }
.tui-mockup .tui-error         { color: var(--tui-error); }
.tui-mockup .tui-dim           { color: var(--tui-dim); }
.tui-mockup .tui-bold          { font-weight: 700; }
.tui-mockup .tui-bold-primary  { font-weight: 700; color: var(--tui-primary); }
.tui-mockup .tui-bold-warning  { font-weight: 700; color: var(--tui-warning); }
.tui-mockup .tui-primary-u     { color: var(--tui-primary); text-decoration: underline; text-underline-offset: 2px; }

/* Rainbow gradient text (throbber bar).  Uses the exact gradient
 * colors from the TUI specification's throbber section, animated
 * to cycle continuously. */
.tui-mockup .tui-rainbow {
  font-weight: 700;
  background: linear-gradient(
    90deg,
    #881177, #aa3355, #cc6666, #ee9944, #eedd00,
    #99dd55, #44dd88, #22ccbb, #00bbcc, #0099cc,
    #3366bb, #663399, #881177
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 100%;
  animation: tui-rainbow-shift 3s linear infinite;
}

@keyframes tui-rainbow-shift {
  0%   { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* ── ADR Admonition ──────────────────────────────────────────────── */

:root {
  --md-admonition-icon--adr: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M14 2H6c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V8l-6-6zm-1 7V3.5L18.5 9H13zM6 20V4h5v7h7v9H6z"/><path d="M8 14h8v2H8zm0-3h8v2H8z"/></svg>');
}

.md-typeset .admonition.adr,
.md-typeset details.adr {
  border-color: #7c4dff;
}

.md-typeset .adr > .admonition-title,
.md-typeset .adr > summary {
  background-color: rgba(124, 77, 255, 0.1);
}

.md-typeset .adr > .admonition-title::before,
.md-typeset .adr > summary::before {
  background-color: #7c4dff;
  -webkit-mask-image: var(--md-admonition-icon--adr);
  mask-image: var(--md-admonition-icon--adr);
}

/* ── ADR Page: Custom Header (subtitle style) ────────────────────── */

.adr-header {
  margin: -0.4rem 0 1.2rem;
  font-size: 0.82rem;
  font-style: italic;
  color: var(--md-default-fg-color--light);
  line-height: 1.7;
}

.adr-header-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.5rem;
}

.adr-header-line .adr-label {
  color: var(--md-default-fg-color--light);
}

.adr-header-line .adr-value {
  color: var(--md-default-fg-color);
}

.adr-header-line a {
  color: var(--md-typeset-a-color);
}

.adr-header-line a:hover {
  color: var(--md-accent-fg-color);
}

/* ── ADR SVG Icon (inline, matching log4brains Material icons) ───── */

.adr-icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  fill: currentColor;
  flex-shrink: 0;
}

/* ── ADR Status Badge (log4brains MuiChip-outlined style) ────────── */

.adr-status-badge {
  display: inline-block;
  height: 18px;
  line-height: 16px;
  font-size: 0.74rem;
  font-weight: 500;
  font-style: normal;           /* override when inside the italic header */
  padding: 0 6px;
  border: 1px solid currentColor;
  border-radius: 9px;
  white-space: nowrap;
  vertical-align: text-bottom;
}

/* Status colours (matching log4brains palette) */
.adr-status-draft     { color: #424242; }
.adr-status-proposed  { color: #283593; }
.adr-status-accepted  { color: #558b2f; }
.adr-status-rejected  { color: #d84315; }
.adr-status-deprecated{ color: #6d4c41; }
.adr-status-superseded{ color: #6d4c41; }

/* Superseded / Deprecated title gets strike-through */
body.adr-page .md-content h1 {
  /* default – no strike-through */
}
body.adr-page.adr-superseded .md-content h1,
body.adr-page.adr-deprecated .md-content h1 {
  text-decoration: line-through;
  text-decoration-color: #6d4c41;
}

/* Dark-mode adjustments */
[data-md-color-scheme="slate"] .adr-status-draft     { color: #bdbdbd; }
[data-md-color-scheme="slate"] .adr-status-proposed  { color: #7986cb; }
[data-md-color-scheme="slate"] .adr-status-accepted  { color: #81c784; }
[data-md-color-scheme="slate"] .adr-status-rejected  { color: #e57373; }
[data-md-color-scheme="slate"] .adr-status-deprecated{ color: #a1887f; }
[data-md-color-scheme="slate"] .adr-status-superseded{ color: #a1887f; }

/* ── Tier badge ──────────────────────────────────────────────────── */

.adr-tier-badge {
  display: inline-block;
  height: 18px;
  line-height: 16px;
  font-size: 0.74rem;
  font-weight: 500;
  font-style: normal;           /* override when inside the italic header */
  padding: 0 6px;
  border: 1px solid var(--md-default-fg-color--lighter);
  border-radius: 9px;
  color: var(--md-default-fg-color--light);
  white-space: nowrap;
}

.adr-tier-title {
  font-size: 0.8rem;
  color: var(--md-default-fg-color--light);
}

/* ── ADR Timeline (in-page, moved to sidebar by JS) ─────────────── */

.adr-timeline {
  display: flex;
  flex-direction: column;
}

.adr-timeline-entry {
  display: flex;
  align-items: flex-start;
  min-height: 48px;
}

/* Left column: date */
.adr-timeline-date-col {
  flex: 0 0 10ch;
  text-align: right;
  padding-right: 10px;
  padding-top: 2px;
}

.adr-timeline-date {
  font-size: 0.72rem;
  color: #9e9e9e;
  white-space: nowrap;
}

[data-md-color-scheme="slate"] .adr-timeline-date {
  color: #757575;
}

/* Centre column: dot + vertical connector */
.adr-timeline-connector {
  flex: 0 0 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  align-self: stretch;        /* span the full row height so the line fills the gap */
}

.adr-timeline-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 3px;
  border: 2px solid currentColor;
  background: var(--md-default-bg-color, #fff);
  box-sizing: border-box;
}

/* Dot colours re-use status palette */
.adr-dot-draft      { color: #424242; border-color: #424242; }
.adr-dot-proposed   { color: #283593; border-color: #283593; }
.adr-dot-accepted   { color: #558b2f; border-color: #558b2f; }
.adr-dot-rejected   { color: #d84315; border-color: #d84315; }
.adr-dot-deprecated { color: #6d4c41; border-color: #6d4c41; }
.adr-dot-superseded { color: #6d4c41; border-color: #6d4c41; }

/* Current (last) entry: filled dot, slightly larger */
.adr-dot-current {
  width: 14px;
  height: 14px;
  margin-top: 2px;
  background: currentColor;
}

/* Dark-mode dot colours */
[data-md-color-scheme="slate"] .adr-dot-draft      { color: #bdbdbd; border-color: #bdbdbd; }
[data-md-color-scheme="slate"] .adr-dot-proposed   { color: #7986cb; border-color: #7986cb; }
[data-md-color-scheme="slate"] .adr-dot-accepted   { color: #81c784; border-color: #81c784; }
[data-md-color-scheme="slate"] .adr-dot-rejected   { color: #e57373; border-color: #e57373; }
[data-md-color-scheme="slate"] .adr-dot-deprecated { color: #a1887f; border-color: #a1887f; }
[data-md-color-scheme="slate"] .adr-dot-superseded { color: #a1887f; border-color: #a1887f; }

/* Connector line between dots */
.adr-timeline-line {
  width: 2px;
  flex-grow: 1;
  min-height: 16px;
  background: #e0e0e0;
}

[data-md-color-scheme="slate"] .adr-timeline-line {
  background: #424242;
}

/* Right column: status + person */
.adr-timeline-content {
  flex: 1 1 auto;
  padding-left: 10px;
  padding-bottom: 12px;
}

.adr-timeline-content .adr-status-badge {
  display: inline-block;
  vertical-align: middle;
}

.adr-timeline-person {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  color: #616161;
  margin-top: 3px;
}

[data-md-color-scheme="slate"] .adr-timeline-person {
  color: #9e9e9e;
}

.adr-timeline-person .adr-icon {
  font-size: 0.85em;
}

/* ── Sidebar timeline wrapper (set by adr-page.js) ──────────────── */

.adr-sidebar-timeline {
  padding: 0.6rem 0.6rem 1rem;
}

.adr-timeline-title {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--md-default-fg-color--light);
  padding-bottom: 0.5rem;
  margin-bottom: 0.25rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

/* When in the sidebar, tighten the timeline dimensions */
.adr-sidebar-timeline .adr-timeline-date-col {
  flex: 0 0 8ch;
  padding-right: 6px;
}

.adr-sidebar-timeline .adr-timeline-entry {
  min-height: 40px;
}

.adr-sidebar-timeline .adr-timeline-content {
  padding-left: 8px;
  padding-bottom: 10px;
}

/* ── ADR page: hide the integrated TOC in the left sidebar ───────── */
/* Desktop only — the JS replaces the sidebar, but in case it hasn't
   run yet or on print, also hide the secondary nav (TOC items).      */

@media screen and (min-width: 76.25em) {
  body.adr-page .md-sidebar--primary .md-nav--secondary {
    display: none;
  }

  /* Ensure the JS-injected timeline overrides the nav-hiding CSS. */
  body.adr-page .md-sidebar--primary .adr-sidebar-timeline {
    display: block !important;
  }
}

/* ── ADR page: mobile timeline (appended at end of article by JS) ── */

.adr-timeline-mobile {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--md-default-fg-color--lightest);
}

/* ── Combined ADR timeline (index page, always visible in body) ──── */

.adr-combined-timeline {
  display: flex !important;        /* override the display:none on .adr-timeline */
  flex-direction: column;
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

/* ADR link row (replaces the person row on individual timelines) */
.adr-timeline-adr-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  color: #616161;
  margin-top: 3px;
}

[data-md-color-scheme="slate"] .adr-timeline-adr-link {
  color: #9e9e9e;
}

.adr-timeline-adr-link .adr-icon {
  width: 0.85em;
  height: 0.85em;
  flex-shrink: 0;
  fill: currentColor;
}

.adr-timeline-adr-link a {
  color: var(--md-typeset-a-color);
  text-decoration: none;
}

.adr-timeline-adr-link a:hover {
  text-decoration: underline;
}