/*
 * Resource centre — scoped styles.
 * Everything is under .cd-root and uses cd- prefixes so it can be dropped into
 * an existing site without colliding with the host stylesheet.
 */

.cd-root {
  --cd-bg: #ffffff;
  --cd-bg-soft: #f7f8fa;
  --cd-bg-sunken: #eef0f4;
  --cd-fg: #1c2024;
  --cd-fg-muted: #5b6672;
  --cd-fg-faint: #8b95a1;
  --cd-border: #e3e6ea;
  --cd-accent: #128C7E;
  --cd-accent-soft: rgba(18, 140, 126, 0.1);
  --cd-radius: 10px;
  --cd-sidebar-w: 300px;
  --cd-toc-w: 220px;
  --cd-header-h: 60px;
  --cd-font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --cd-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  color: var(--cd-fg);
  background: var(--cd-bg);
  font-family: var(--cd-font);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.cd-root[data-theme="dark"] {
  --cd-bg: #17191c;
  --cd-bg-soft: #1d2024;
  --cd-bg-sunken: #26292e;
  --cd-fg: #e8eaed;
  --cd-fg-muted: #a4adb8;
  --cd-fg-faint: #79828e;
  --cd-border: #2c3037;
  --cd-accent: #34d399;
  --cd-accent-soft: rgba(52, 211, 153, 0.16);
}

.cd-root *,
.cd-root *::before,
.cd-root *::after { box-sizing: border-box; }

.cd-root a { color: var(--cd-accent); text-decoration: none; }
.cd-root a:hover { text-decoration: underline; }
.cd-root button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
.cd-root :focus-visible { outline: 2px solid var(--cd-accent); outline-offset: 2px; border-radius: 4px; }

/* ------------------------------------------------------------- app shell */

.cd-root.cd-standalone { min-height: 100vh; }

.cd-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--cd-header-h);
  padding: 0 20px;
  background: var(--cd-bg);
  border-bottom: 1px solid var(--cd-border);
}

/* Component link rules are prefixed with .cd-root so they outrank the
   `.cd-root a` accent default above. */
.cd-root .cd-brand { display: flex; align-items: center; gap: 10px; font-weight: 650; font-size: 16px; color: var(--cd-fg); }
.cd-root .cd-brand:hover { text-decoration: none; }
.cd-brand__logo { width: 26px; height: 26px; border-radius: 6px; display: grid; place-items: center; background: var(--cd-accent); color: #fff; font-size: 14px; }

.cd-header__spacer { flex: 1; }

.cd-searchbtn {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 240px;
  padding: 7px 10px;
  color: var(--cd-fg-faint);
  background: var(--cd-bg-soft);
  border: 1px solid var(--cd-border);
  border-radius: 999px;
}
.cd-searchbtn:hover { border-color: var(--cd-accent); }
.cd-searchbtn__kbd { margin-left: auto; display: flex; gap: 3px; }
.cd-kbd {
  padding: 1px 5px;
  font-family: var(--cd-mono);
  font-size: 11px;
  color: var(--cd-fg-muted);
  background: var(--cd-bg-sunken);
  border: 1px solid var(--cd-border);
  border-radius: 4px;
}

.cd-iconbtn { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 8px; color: var(--cd-fg-muted); }
.cd-iconbtn:hover { background: var(--cd-bg-soft); color: var(--cd-fg); }

.cd-burger { display: none; }

.cd-body { display: flex; align-items: flex-start; gap: 0; max-width: 1440px; margin: 0 auto; }

/* --------------------------------------------------------------- sidebar */

.cd-sidebar {
  position: sticky;
  top: var(--cd-header-h);
  flex: 0 0 var(--cd-sidebar-w);
  width: var(--cd-sidebar-w);
  height: calc(100vh - var(--cd-header-h));
  padding: 20px 8px 40px 20px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border-right: 1px solid var(--cd-border);
}

.cd-spaces { display: flex; gap: 4px; margin-bottom: 14px; }
.cd-root .cd-space {
  padding: 5px 10px;
  font-size: 13px;
  font-weight: 550;
  color: var(--cd-fg-muted);
  border-radius: 999px;
}
.cd-root .cd-space:hover { background: var(--cd-bg-soft); text-decoration: none; }
.cd-root .cd-space.is-active { color: var(--cd-accent); background: var(--cd-accent-soft); }

.cd-nav ul { list-style: none; margin: 0; padding: 0; }
.cd-nav > ul > li { margin-bottom: 1px; }
.cd-nav li ul { margin-left: 11px; padding-left: 9px; border-left: 1px solid var(--cd-border); }

.cd-nav__row { display: flex; align-items: stretch; gap: 2px; border-radius: 7px; }
.cd-nav__row:hover { background: var(--cd-bg-soft); }
.cd-nav__row.is-active { background: var(--cd-accent-soft); }
.cd-nav__row.is-active > .cd-nav__link { color: var(--cd-accent); font-weight: 600; }

.cd-root .cd-nav__link {
  flex: 1;
  min-width: 0;
  padding: 6px 8px;
  font-size: 13.5px;
  line-height: 1.45;
  color: var(--cd-fg-muted);
}
.cd-root .cd-nav__link:hover { color: var(--cd-fg); text-decoration: none; }

.cd-nav__toggle {
  flex: 0 0 26px;
  display: grid;
  place-items: center;
  color: var(--cd-fg-faint);
  border-radius: 6px;
}
.cd-nav__toggle:hover { background: var(--cd-bg-sunken); }
.cd-nav__toggle svg { transition: transform 0.15s ease; }
.cd-nav__toggle[aria-expanded="true"] svg { transform: rotate(90deg); }

/* --------------------------------------------------------------- content */

.cd-main { flex: 1; min-width: 0; display: flex; gap: 24px; padding: 32px 28px 96px; }
.cd-article { flex: 1; min-width: 0; max-width: 760px; }

.cd-crumbs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; font-size: 12.5px; color: var(--cd-fg-faint); }
.cd-crumbs a { color: var(--cd-fg-faint); }
.cd-crumbs span { color: var(--cd-fg-faint); }

.cd-title { display: flex; align-items: flex-start; gap: 16px; margin: 0 0 22px; }
.cd-title h1 { flex: 1; margin: 0; font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; font-weight: 700; }

.cd-copy {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  font-size: 13px;
  color: var(--cd-fg-muted);
  background: var(--cd-bg-soft);
  border: 1px solid var(--cd-border);
  border-radius: 8px;
}
.cd-copy:hover { color: var(--cd-fg); border-color: var(--cd-accent); }

/* prose */
.cd-prose > *:first-child { margin-top: 0; }
.cd-prose h2 { margin: 40px 0 12px; font-size: 24px; font-weight: 680; letter-spacing: -0.01em; scroll-margin-top: calc(var(--cd-header-h) + 16px); }
.cd-prose h3 { margin: 30px 0 10px; font-size: 18.5px; font-weight: 650; scroll-margin-top: calc(var(--cd-header-h) + 16px); }
.cd-prose h4 { margin: 24px 0 8px; font-size: 16px; font-weight: 650; }
.cd-prose p { margin: 0 0 16px; }
.cd-prose ul, .cd-prose ol { margin: 0 0 16px; padding-left: 24px; }
.cd-prose li { margin-bottom: 6px; }
.cd-prose li > ul, .cd-prose li > ol { margin-top: 6px; }
.cd-prose img { max-width: 100%; height: auto; border-radius: 8px; }
.cd-prose hr { margin: 32px 0; border: 0; border-top: 1px solid var(--cd-border); }
.cd-prose strong { font-weight: 650; color: var(--cd-fg); }
.cd-prose blockquote {
  margin: 0 0 16px;
  padding: 2px 0 2px 16px;
  color: var(--cd-fg-muted);
  border-left: 3px solid var(--cd-border);
}

.cd-prose code {
  padding: 2px 5px;
  font-family: var(--cd-mono);
  font-size: 0.875em;
  background: var(--cd-bg-sunken);
  border-radius: 5px;
  overflow-wrap: break-word;
}
.cd-prose pre {
  margin: 0 0 16px;
  padding: 14px 16px;
  overflow-x: auto;
  background: var(--cd-bg-sunken);
  border: 1px solid var(--cd-border);
  border-radius: var(--cd-radius);
}
.cd-prose pre code { padding: 0; background: none; font-size: 13px; line-height: 1.6; }

.cd-prose table { width: 100%; margin: 0 0 16px; border-collapse: collapse; font-size: 14px; }
.cd-prose th, .cd-prose td { padding: 9px 12px; text-align: left; border: 1px solid var(--cd-border); }
.cd-prose th { background: var(--cd-bg-soft); font-weight: 600; }
.cd-tablewrap { overflow-x: auto; margin-bottom: 16px; }
.cd-tablewrap table { margin-bottom: 0; }

.cd-anchor { margin-left: 8px; color: var(--cd-fg-faint); opacity: 0; font-weight: 400; }
.cd-prose h2:hover .cd-anchor, .cd-prose h3:hover .cd-anchor { opacity: 1; }

/* hints */
.cd-hint {
  display: flex;
  gap: 12px;
  margin: 0 0 18px;
  padding: 13px 15px;
  background: var(--cd-bg-soft);
  border: 1px solid var(--cd-border);
  border-left: 3px solid var(--cd-fg-faint);
  border-radius: var(--cd-radius);
  color: var(--cd-fg-muted);
}
.cd-hint__body { min-width: 0; flex: 1; }
.cd-hint__body > *:last-child { margin-bottom: 0; }
.cd-hint__icon { flex: 0 0 18px; height: 18px; margin-top: 2px; border-radius: 50%; background: var(--cd-fg-faint); position: relative; }
.cd-hint__icon::after {
  content: "i";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  font-style: italic;
  color: var(--cd-bg);
}
.cd-hint--info { border-left-color: var(--cd-accent); }
.cd-hint--info .cd-hint__icon { background: var(--cd-accent); }
.cd-hint--success { border-left-color: #16a34a; }
.cd-hint--success .cd-hint__icon { background: #16a34a; }
.cd-hint--success .cd-hint__icon::after { content: "✓"; font-style: normal; font-size: 11px; }
.cd-hint--warning { border-left-color: #d97706; }
.cd-hint--warning .cd-hint__icon { background: #d97706; }
.cd-hint--warning .cd-hint__icon::after { content: "!"; font-style: normal; }
.cd-hint--danger { border-left-color: #dc2626; }
.cd-hint--danger .cd-hint__icon { background: #dc2626; }
.cd-hint--danger .cd-hint__icon::after { content: "!"; font-style: normal; }

/* page cards */
.cd-root .cd-card {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  padding: 15px 17px;
  color: var(--cd-fg);
  background: var(--cd-bg-soft);
  border: 1px solid var(--cd-border);
  border-radius: var(--cd-radius);
  transition: border-color 0.12s ease, transform 0.12s ease;
}
.cd-root .cd-card:hover { text-decoration: none; border-color: var(--cd-accent); transform: translateY(-1px); }
.cd-card__title { flex: 1; font-weight: 550; }
.cd-card__arrow { color: var(--cd-fg-faint); }

.cd-embed { display: block; margin-bottom: 16px; padding: 12px 15px; font-size: 13.5px; word-break: break-all; background: var(--cd-bg-soft); border: 1px solid var(--cd-border); border-radius: var(--cd-radius); }

/* video facade */
.cd-video {
  position: relative;
  margin: 0 0 20px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #000;
  border-radius: var(--cd-radius);
  cursor: pointer;
}
.cd-video__thumb { width: 100%; height: 100%; object-fit: cover; border-radius: 0 !important; opacity: 0.9; transition: opacity 0.15s ease; }
.cd-video:hover .cd-video__thumb { opacity: 1; }
.cd-video__play {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 64px;
  height: 44px;
  transform: translate(-50%, -50%);
  background: rgba(0, 0, 0, 0.72);
  border-radius: 10px;
  transition: background 0.15s ease;
}
.cd-video:hover .cd-video__play { background: #f00; }
.cd-video__play::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-42%, -50%);
  border-style: solid;
  border-width: 8px 0 8px 14px;
  border-color: transparent transparent transparent #fff;
}
.cd-video iframe { width: 100%; height: 100%; border: 0; display: block; }

/* footer bits */
.cd-feedback { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--cd-border); }
.cd-feedback__q { margin-bottom: 10px; font-size: 13.5px; color: var(--cd-fg-muted); }
.cd-faces { display: flex; gap: 8px; }
.cd-face {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  font-size: 17px;
  background: var(--cd-bg-soft);
  border: 1px solid var(--cd-border);
  border-radius: 9px;
}
.cd-face:hover { border-color: var(--cd-accent); transform: translateY(-1px); }
.cd-face.is-picked { border-color: var(--cd-accent); background: var(--cd-accent-soft); }

.cd-pager { display: flex; gap: 12px; margin-top: 34px; }
.cd-pager a {
  flex: 1;
  min-width: 0;
  padding: 13px 16px;
  color: var(--cd-fg);
  background: var(--cd-bg-soft);
  border: 1px solid var(--cd-border);
  border-radius: var(--cd-radius);
}
.cd-pager a:hover { text-decoration: none; border-color: var(--cd-accent); }
.cd-pager__dir { display: block; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--cd-fg-faint); }
.cd-pager__title { display: block; font-weight: 550; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cd-pager__next { text-align: right; }

/* ------------------------------------------------------------------- toc */

.cd-toc {
  position: sticky;
  top: calc(var(--cd-header-h) + 32px);
  flex: 0 0 var(--cd-toc-w);
  max-height: calc(100vh - var(--cd-header-h) - 64px);
  overflow-y: auto;
  font-size: 13px;
}
.cd-toc__title { margin-bottom: 10px; font-size: 11.5px; font-weight: 650; text-transform: uppercase; letter-spacing: 0.06em; color: var(--cd-fg-faint); }
.cd-toc ul { list-style: none; margin: 0; padding: 0; }
.cd-toc a { display: block; padding: 4px 0 4px 11px; color: var(--cd-fg-muted); border-left: 2px solid var(--cd-border); }
.cd-toc a:hover { color: var(--cd-fg); text-decoration: none; }
.cd-toc a.is-active { color: var(--cd-accent); border-left-color: var(--cd-accent); }
.cd-toc li.cd-toc--3 a { padding-left: 22px; }

/* ---------------------------------------------------------------- search */

.cd-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: 12vh 16px 16px;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(2px);
}
.cd-modal[hidden] { display: none; }

.cd-search {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 620px;
  max-height: 70vh;
  overflow: hidden;
  background: var(--cd-bg);
  border: 1px solid var(--cd-border);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}
.cd-search__head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--cd-border); }
.cd-search__input {
  flex: 1;
  font: inherit;
  font-size: 16px;
  color: var(--cd-fg);
  background: none;
  border: 0;
  outline: none;
}
.cd-search__input::placeholder { color: var(--cd-fg-faint); }
.cd-search__results { flex: 1; overflow-y: auto; padding: 8px; }
.cd-root .cd-hit { display: block; padding: 9px 11px; border-radius: 8px; color: var(--cd-fg); }
.cd-root .cd-hit:hover, .cd-root .cd-hit.is-cursor { background: var(--cd-accent-soft); text-decoration: none; }
.cd-hit__title { font-weight: 550; font-size: 14px; }
.cd-hit__crumb { font-size: 11.5px; color: var(--cd-fg-faint); }
.cd-hit__snippet { font-size: 12.5px; color: var(--cd-fg-muted); overflow: hidden; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; }
.cd-hit mark { background: transparent; color: var(--cd-accent); font-weight: 650; }
.cd-search__empty { padding: 28px; text-align: center; color: var(--cd-fg-faint); font-size: 14px; }
.cd-search__foot { display: flex; gap: 14px; padding: 9px 14px; font-size: 11.5px; color: var(--cd-fg-faint); border-top: 1px solid var(--cd-border); }

/* -------------------------------------------------------------- responsive */

.cd-scrim { display: none; }

@media (max-width: 1180px) {
  .cd-toc { display: none; }
}

@media (max-width: 860px) {
  .cd-burger { display: grid; }
  .cd-searchbtn { min-width: 0; }
  .cd-searchbtn__label, .cd-searchbtn__kbd { display: none; }
  .cd-main { padding: 22px 18px 72px; }
  .cd-title h1 { font-size: 27px; }

  .cd-sidebar {
    position: fixed;
    top: var(--cd-header-h);
    left: 0;
    z-index: 25;
    height: calc(100vh - var(--cd-header-h));
    background: var(--cd-bg);
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }
  .cd-root.is-navopen .cd-sidebar { transform: none; }
  .cd-root.is-navopen .cd-scrim {
    display: block;
    position: fixed;
    inset: var(--cd-header-h) 0 0;
    z-index: 24;
    background: rgba(0, 0, 0, 0.4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .cd-root * { transition: none !important; }
}