/* =============================================================
 * QuantAscent Documentation — polished user-manual styling
 * Built on top of mkdocs-material "slate" scheme.
 * Edit only this file; main.css and palette.css are framework.
 * ============================================================= */

/* --- Design tokens ------------------------------------------- */
:root {
  --qa-accent: #00d4aa;
  --qa-accent-bright: #14e1b8;
  --qa-accent-soft: rgba(0, 212, 170, 0.14);
  --qa-accent-softer: rgba(0, 212, 170, 0.06);
  --qa-accent-border: rgba(0, 212, 170, 0.35);

  --qa-bg-0: #0a0e14;
  --qa-bg-1: #0d1117;
  --qa-bg-2: #161b22;
  --qa-bg-3: #1c2128;
  --qa-bg-4: #21262d;

  --qa-fg: #e6edf3;
  --qa-fg-muted: #8b949e;
  --qa-fg-dim: #6e7681;

  --qa-border: #30363d;
  --qa-border-soft: #21262d;

  --qa-link: #58a6ff;

  --qa-radius: 8px;
  --qa-radius-sm: 6px;

  --qa-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.25);
  --qa-shadow-md: 0 6px 18px rgba(0, 0, 0, 0.35);
}

/* --- Material palette overrides ------------------------------ */
[data-md-color-scheme="slate"] {
  --md-default-bg-color: var(--qa-bg-1);
  --md-default-bg-color--light: var(--qa-bg-2);
  --md-default-bg-color--lighter: var(--qa-bg-3);
  --md-default-bg-color--lightest: var(--qa-bg-4);

  --md-default-fg-color: var(--qa-fg);
  --md-default-fg-color--light: var(--qa-fg-muted);
  --md-default-fg-color--lighter: var(--qa-fg-dim);
  --md-default-fg-color--lightest: #484f58;

  --md-primary-fg-color: var(--qa-accent);
  --md-primary-fg-color--light: var(--qa-accent-soft);
  --md-primary-fg-color--dark: #00b894;
  --md-primary-bg-color: var(--qa-fg);
  --md-primary-bg-color--light: var(--qa-fg-muted);

  --md-accent-fg-color: var(--qa-accent);
  --md-accent-fg-color--transparent: var(--qa-accent-softer);
  --md-accent-bg-color: var(--qa-bg-1);

  --md-code-bg-color: var(--qa-bg-0);
  --md-code-fg-color: var(--qa-fg);

  --md-typeset-a-color: var(--qa-link);

  --md-footer-bg-color: var(--qa-bg-0);
  --md-footer-bg-color--dark: #070a0f;
  --md-footer-fg-color: var(--qa-fg-muted);
  --md-footer-fg-color--light: var(--qa-fg-dim);
  --md-footer-fg-color--lighter: #484f58;
}

/* --- Global rhythm / smoothing ------------------------------- */
body,
.md-typeset {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

.md-typeset {
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--qa-fg);
  letter-spacing: 0.002em;
}

/* Slightly wider content column for breathing room */
.md-grid {
  max-width: 64rem;
}

.md-typeset p {
  margin: 0.9em 0;
  max-width: 70ch;
}

/* Cards/blocks should fill their containers, not inherit the prose cap */
.md-typeset .qa-card p,
.md-typeset .admonition p,
.md-typeset details p,
.md-typeset table p,
.md-typeset blockquote p,
.md-typeset li p {
  max-width: none;
}

.md-content__inner {
  padding-top: 1.25rem;
  padding-bottom: 4rem;
}

/* Opening paragraph right after the H1 reads as the page lead */
.md-typeset h1 + p {
  font-size: 0.88rem;
  color: var(--qa-fg-muted);
  line-height: 1.7;
  margin-bottom: 1.8rem;
  max-width: 62ch;
}

/* --- Headings ------------------------------------------------ */
.md-typeset h1 {
  font-weight: 700;
  font-size: 1.8rem;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 0.7rem;
  color: var(--qa-fg);
}

/* Material injects a decorative icon after H1 — hide for a cleaner look */
.md-typeset h1::after {
  content: none;
}

.md-typeset h2 {
  position: relative;
  font-weight: 650;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 2.6rem 0 0.9rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--qa-border-soft);
  color: var(--qa-fg);
}

.md-typeset h2::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--qa-accent);
  border-radius: 0 0 2px 2px;
}

.md-typeset h3 {
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  margin: 1.7rem 0 0.5rem;
  color: var(--qa-fg);
}

.md-typeset h4 {
  font-weight: 600;
  font-size: 1rem;
  margin: 1.6rem 0 0.5rem;
  color: var(--qa-fg);
  letter-spacing: -0.005em;
}

.md-typeset h5,
.md-typeset h6 {
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--qa-fg-muted);
  margin: 1.4rem 0 0.4rem;
}

/* Heading anchors show on hover only */
.md-typeset .headerlink {
  color: var(--qa-fg-dim);
  opacity: 0;
  transition: opacity 0.15s;
  margin-left: 0.35em;
}
.md-typeset h1:hover .headerlink,
.md-typeset h2:hover .headerlink,
.md-typeset h3:hover .headerlink,
.md-typeset h4:hover .headerlink,
.md-typeset h5:hover .headerlink,
.md-typeset h6:hover .headerlink,
.md-typeset .headerlink:focus {
  opacity: 1;
}
.md-typeset .headerlink:hover {
  color: var(--qa-accent);
}

/* --- Lists --------------------------------------------------- */
.md-typeset ul,
.md-typeset ol {
  padding-left: 1.4rem;
  margin: 0.8rem 0 1.2rem;
}

.md-typeset ul li,
.md-typeset ol li {
  margin: 0.35rem 0;
}

.md-typeset ul li::marker {
  color: var(--qa-accent);
}

.md-typeset ol li::marker {
  color: var(--qa-accent);
  font-weight: 600;
}

.md-typeset ul li > p,
.md-typeset ol li > p {
  margin: 0.2rem 0;
}

.md-typeset ul ul,
.md-typeset ol ol,
.md-typeset ul ol,
.md-typeset ol ul {
  margin: 0.3rem 0;
}

/* Definition lists — Glossary pattern */
.md-typeset dl dt {
  font-weight: 600;
  color: var(--qa-fg);
  margin-top: 1.1rem;
}

.md-typeset dl dd {
  color: var(--qa-fg);
  margin: 0.2rem 0 0.6rem 1rem;
  line-height: 1.7;
}

/* --- Blockquote (used for "See also" tips) ------------------- */
.md-typeset blockquote {
  position: relative;
  border-left: 3px solid var(--qa-accent);
  background:
    linear-gradient(to right, var(--qa-accent-softer), transparent 70%),
    var(--qa-bg-2);
  padding: 0.9rem 1.3rem;
  border-radius: 0 var(--qa-radius-sm) var(--qa-radius-sm) 0;
  margin: 1.4rem 0;
  color: var(--qa-fg);
}

.md-typeset blockquote p:first-child { margin-top: 0; }
.md-typeset blockquote p:last-child  { margin-bottom: 0; }

/* --- Tables -------------------------------------------------- */
.md-typeset table:not([class]) {
  display: table;
  width: 100%;
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius);
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
  box-shadow: var(--qa-shadow-sm);
  margin: 1.5rem 0;
  font-size: 0.86rem;
  background: var(--qa-bg-2);
}

.md-typeset table:not([class]) th {
  background: var(--qa-bg-3);
  color: var(--qa-fg);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--qa-accent-border);
  text-align: left;
  vertical-align: middle;
}

.md-typeset table:not([class]) td {
  padding: 0.7rem 1rem;
  border-top: 1px solid var(--qa-border-soft);
  color: var(--qa-fg);
  vertical-align: top;
}

.md-typeset table:not([class]) tbody tr:first-child td {
  border-top: none;
}

.md-typeset table:not([class]) tbody tr:nth-child(even) td {
  background: rgba(255, 255, 255, 0.015);
}

.md-typeset table:not([class]) tbody tr:hover td {
  background: var(--qa-accent-softer);
}

.md-typeset table:not([class]) code {
  background: var(--qa-bg-0);
  border: 1px solid var(--qa-border-soft);
}

/* --- Code ---------------------------------------------------- */
.md-typeset code {
  background: var(--qa-bg-2);
  border: 1px solid var(--qa-border-soft);
  color: var(--qa-accent);
  font-size: 0.85em;
  padding: 0.1em 0.42em;
  border-radius: 4px;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
}

.md-typeset pre {
  margin: 1.3rem 0;
}

.md-typeset pre > code {
  background: var(--qa-bg-0);
  border: 1px solid var(--qa-border);
  padding: 1rem 1.1rem;
  color: var(--qa-fg);
  font-size: 0.82rem;
  line-height: 1.7;
  border-radius: var(--qa-radius-sm);
}

.md-typeset .highlight {
  background: transparent;
  border-radius: var(--qa-radius-sm);
  box-shadow: var(--qa-shadow-sm);
}

/* Copy button */
.md-clipboard {
  color: var(--qa-fg-dim);
  opacity: 0;
  transition: opacity 0.15s, color 0.15s;
}
.md-typeset .highlight:hover .md-clipboard,
.md-clipboard:focus {
  opacity: 1;
}
.md-clipboard:hover {
  color: var(--qa-accent);
}

/* --- Admonitions & collapsible details ----------------------- */
.md-typeset .admonition,
.md-typeset details {
  border: 1px solid var(--qa-border);
  background: var(--qa-bg-2);
  border-radius: var(--qa-radius);
  box-shadow: var(--qa-shadow-sm);
  margin: 1.5rem 0;
  font-size: 0.9rem;
  overflow: hidden;
}

.md-typeset .admonition-title,
.md-typeset summary {
  font-weight: 600;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--qa-border-soft);
  color: var(--qa-fg);
}

.md-typeset .admonition-title::before,
.md-typeset summary::before {
  filter: none;
}

/* Note (default blue) */
.md-typeset .admonition.note,
.md-typeset details.note {
  border-color: #4a6785;
}
.md-typeset .note > .admonition-title,
.md-typeset .note > summary {
  background: rgba(74, 103, 133, 0.22);
  border-bottom-color: rgba(74, 103, 133, 0.4);
}

/* Tip / success (accent) */
.md-typeset .admonition.tip,
.md-typeset .admonition.success,
.md-typeset details.tip,
.md-typeset details.success {
  border-color: var(--qa-accent-border);
}
.md-typeset .tip > .admonition-title,
.md-typeset .success > .admonition-title,
.md-typeset .tip > summary,
.md-typeset .success > summary {
  background: var(--qa-accent-soft);
  border-bottom-color: var(--qa-accent-border);
}

/* Info / abstract (cool blue) */
.md-typeset .admonition.info,
.md-typeset .admonition.abstract,
.md-typeset details.info,
.md-typeset details.abstract {
  border-color: #3b6aa0;
}
.md-typeset .info > .admonition-title,
.md-typeset .abstract > .admonition-title,
.md-typeset .info > summary,
.md-typeset .abstract > summary {
  background: rgba(59, 106, 160, 0.2);
  border-bottom-color: rgba(59, 106, 160, 0.4);
}

/* Warning (amber) */
.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-color: #c9a33c;
}
.md-typeset .warning > .admonition-title,
.md-typeset .warning > summary {
  background: rgba(201, 163, 60, 0.18);
  border-bottom-color: rgba(201, 163, 60, 0.4);
}

/* Danger / failure (red) */
.md-typeset .admonition.danger,
.md-typeset .admonition.failure,
.md-typeset details.danger,
.md-typeset details.failure {
  border-color: #d26565;
}
.md-typeset .danger > .admonition-title,
.md-typeset .failure > .admonition-title,
.md-typeset .danger > summary,
.md-typeset .failure > summary {
  background: rgba(210, 101, 101, 0.18);
  border-bottom-color: rgba(210, 101, 101, 0.4);
}

/* --- Links --------------------------------------------------- */
.md-typeset a {
  color: var(--qa-link);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.md-typeset a:hover {
  color: var(--qa-accent);
  border-bottom-color: var(--qa-accent);
}
.md-typeset a.headerlink {
  border-bottom: none;
}

/* --- Primary nav (left sidebar) ------------------------------ */
.md-nav__title {
  color: var(--qa-fg-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 700;
  padding: 0.8rem 0.6rem 0.4rem;
}

.md-nav__link {
  padding: 0.32rem 0.6rem;
  border-radius: var(--qa-radius-sm);
  margin: 0.05rem 0;
  transition: background 0.15s, color 0.15s;
  font-size: 0.82rem;
}

.md-nav__link:hover {
  background: var(--qa-bg-2);
  color: var(--qa-fg);
}

.md-nav__link--active {
  color: var(--qa-accent) !important;
  font-weight: 600;
  background: var(--qa-accent-softer);
}

.md-nav__item--section > .md-nav__link {
  color: var(--qa-fg-muted);
  font-weight: 700;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* --- Right sidebar (table of contents) ----------------------- */
.md-nav--secondary .md-nav__title {
  padding-left: 0.8rem;
}

.md-nav--secondary .md-nav__link {
  padding: 0.22rem 0.8rem;
  border-left: 2px solid transparent;
  border-radius: 0;
  margin: 0;
  color: var(--qa-fg-dim);
  font-size: 0.78rem;
}

.md-nav--secondary .md-nav__link:hover {
  background: transparent;
  color: var(--qa-fg);
  border-left-color: var(--qa-border);
}

.md-nav--secondary .md-nav__link--active {
  background: transparent;
  border-left-color: var(--qa-accent);
  color: var(--qa-accent) !important;
  font-weight: 500;
}

/* --- Header bar --------------------------------------------- */
.md-header {
  background: var(--qa-bg-0);
  border-bottom: 1px solid var(--qa-border);
  box-shadow: none;
}

.md-header[data-md-state="shadow"] {
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.md-header__title {
  font-weight: 600;
  letter-spacing: -0.005em;
}

/* --- Top-level tabs ----------------------------------------- */
.md-tabs {
  background: var(--qa-bg-1);
  border-bottom: 1px solid var(--qa-border-soft);
}

.md-tabs__link {
  opacity: 0.88;
  font-size: 0.78rem;
  margin-top: 0.6rem;
  font-weight: 500;
  transition: opacity 0.15s, color 0.15s;
}

.md-tabs__link:hover,
.md-tabs__link--active {
  opacity: 1;
  color: var(--qa-accent);
}

/* --- Search -------------------------------------------------- */
.md-search__input {
  background: var(--qa-bg-2);
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius-sm);
  color: var(--qa-fg);
}

.md-search__input:hover,
.md-search__input:focus {
  background: var(--qa-bg-3);
  border-color: var(--qa-accent-border);
}

.md-search__input::placeholder {
  color: var(--qa-fg-dim);
}

.md-search-result__article {
  border-radius: var(--qa-radius-sm);
}

.md-search-result mark {
  color: var(--qa-accent);
  background: var(--qa-accent-soft);
  border-radius: 2px;
}

/* --- Keyboard keys (pymdownx.keys) --------------------------- */
.md-typeset kbd,
.md-typeset .keys kbd {
  background: var(--qa-bg-3);
  border: 1px solid var(--qa-border);
  border-bottom: 2px solid var(--qa-border);
  border-radius: 4px;
  padding: 0.12em 0.5em;
  font-size: 0.78em;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  color: var(--qa-fg);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.35);
  line-height: 1;
}

/* --- Horizontal rule ---------------------------------------- */
.md-typeset hr {
  border: none;
  border-top: 1px solid var(--qa-border-soft);
  margin: 2.2rem 0;
}

/* --- Footer / prev-next pagination -------------------------- */
.md-footer {
  background: var(--qa-bg-0);
}

.md-footer-meta {
  background: var(--qa-bg-0);
  border-top: 1px solid var(--qa-border-soft);
}

.md-footer__inner {
  padding: 1.4rem 0;
}

.md-footer__link {
  opacity: 1;
  background: var(--qa-bg-2);
  border: 1px solid var(--qa-border);
  border-radius: var(--qa-radius);
  padding: 1rem 1.2rem;
  margin: 0.6rem 0;
  transition: border-color 0.15s, transform 0.15s, background 0.15s;
  align-items: center;
}

.md-footer__link:hover {
  border-color: var(--qa-accent-border);
  background: var(--qa-bg-3);
  transform: translateY(-2px);
  opacity: 1;
}

.md-footer__direction {
  color: var(--qa-fg-dim);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.md-footer__title {
  color: var(--qa-fg);
  font-weight: 600;
  font-size: 0.9rem;
}

/* --- Scrollbars --------------------------------------------- */
.md-sidebar__scrollwrap::-webkit-scrollbar { width: 8px; }
.md-sidebar__scrollwrap::-webkit-scrollbar-track { background: transparent; }
.md-sidebar__scrollwrap::-webkit-scrollbar-thumb {
  background: var(--qa-border);
  border-radius: 4px;
}
.md-sidebar__scrollwrap::-webkit-scrollbar-thumb:hover {
  background: var(--qa-fg-dim);
}

/* --- Back-to-top button ------------------------------------- */
.md-top {
  background: var(--qa-bg-2);
  border: 1px solid var(--qa-border);
  color: var(--qa-fg);
}
.md-top:hover {
  background: var(--qa-bg-3);
  border-color: var(--qa-accent-border);
  color: var(--qa-accent);
}

/* --- Landing page (hero + card grid) ------------------------ */
/* Hero left-aligned to mirror the marketing landing page. */
.qa-hero {
  text-align: left;
  padding: 3.4rem 0 2.6rem;
  margin: -1.25rem 0 2.4rem;
  background:
    radial-gradient(ellipse at 25% -30%, var(--qa-accent-soft), transparent 55%);
  border-bottom: 1px solid var(--qa-border-soft);
  border-radius: 0;
  position: relative;
}

.qa-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--qa-accent-soft) 0%, transparent 60%);
}

.qa-hero h1 {
  font-size: 2.7rem;
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 0.7rem 0 0.4rem;
  color: var(--qa-fg);
  line-height: 1.05;
  border-top: none;
  padding-top: 0;
}

.qa-hero h1::before,
.qa-hero h1::after {
  content: none;
}

.qa-hero .qa-accent {
  background: linear-gradient(135deg, var(--qa-accent), var(--qa-accent-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.qa-hero .qa-subtitle {
  font-size: 1.15rem;
  color: var(--qa-fg-muted);
  margin: 0 0 1.4rem;
  font-weight: 400;
  letter-spacing: 0.005em;
  max-width: 56ch;
  line-height: 1.55;
}

.qa-hero .qa-version {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.72rem;
  color: var(--qa-accent-bright);
  background: var(--qa-accent-soft);
  border: 1px solid var(--qa-accent-border);
  border-radius: 999px;
  padding: 0.28rem 0.85rem 0.28rem 0.7rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.qa-hero .qa-version::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--qa-accent-bright);
  box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.18);
}

.qa-hero p { margin: 0; }
.qa-hero .qa-subtitle { margin: 0 0 1.4rem; }

/* Section eyebrows on the index page */
.qa-section-title {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--qa-accent-bright);
  margin: 2.8rem 0 1.2rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--qa-border-soft);
  position: relative;
}

.qa-section-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 32px;
  height: 2px;
  background: var(--qa-accent);
  border-radius: 2px;
}

/* Card grid */
.qa-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.1rem;
  margin: 1.5rem 0 2rem;
}

.qa-card {
  position: relative;
  background: var(--qa-bg-2);
  border: 1px solid var(--qa-border-soft);
  border-radius: var(--qa-radius);
  padding: 1.6rem 1.5rem 1.4rem;
  transition: border-color 0.2s, transform 0.15s, box-shadow 0.2s, background 0.2s;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.qa-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--qa-accent), transparent);
  opacity: 0;
  transition: opacity 0.2s;
}

.qa-card:hover {
  border-color: var(--qa-border);
  background: var(--qa-bg-3);
  transform: translateY(-2px);
  box-shadow: var(--qa-shadow-md);
}

.qa-card:hover::before { opacity: 1; }

.qa-card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--qa-fg);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding-top: 0;
  border-top: none;
}

.qa-card h3::before { content: none; }

.qa-card h3 .twemoji {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  background: var(--qa-accent-soft);
  border: 1px solid var(--qa-accent-border);
  color: var(--qa-accent-bright);
  flex-shrink: 0;
  padding: 6px;
  box-sizing: border-box;
}

.qa-card h3 .twemoji svg,
.qa-card h3 svg {
  width: 100%;
  height: 100%;
  color: inherit;
  fill: currentColor;
  flex-shrink: 0;
}

.qa-card p {
  color: var(--qa-fg-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 0 0 1rem;
  flex: 1;
  max-width: none;
}

.qa-card p:last-child {
  margin-bottom: 0;
  flex: none;
}

.qa-card a {
  color: var(--qa-accent-bright);
  font-weight: 500;
  font-size: 0.88rem;
  border-bottom: none;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.15s, gap 0.15s;
}

.qa-card a:hover,
.qa-card:hover a {
  color: var(--qa-accent-bright);
  border-bottom: none;
  gap: 0.5rem;
}

/* --- MathJax spacing ----------------------------------------- */
.md-typeset mjx-container { margin: 0.3rem 0; }

/* --- Print (keep PDF generators legible) --------------------- */
@media print {
  .md-header,
  .md-tabs,
  .md-sidebar,
  .md-footer,
  .qa-hero {
    display: none !important;
  }
  .md-content__inner { padding: 0; }
  .md-typeset h2 {
    border-top: none;
    padding-top: 0;
  }
  .md-typeset h2::before { display: none; }
}