/* Overrides for leandown's hover tooltips. * * Loaded after node_modules/@leandown/mdbook/dist/leandown.css (see the * additional-css order in book.toml), so equal-specificity rules here win. */ :root { /* Deliberately `em`, not `rem`: mdbook sets `html { font-size: 62.5% }` so that 1rem = 10px, which silently shrinks leandown's `0.95rem` tooltip text to 9.5px (its stylesheet assumes a normal 16px root). Tooltips are appended straight to , and never nested inside one another, so `em` resolves against mdbook's body text — 1em is 16px here — and cannot compound. Everything inside the tooltip (prose, type signatures, inline code) is sized in `em` by leandown, so this one value scales the whole popup. */ --lait-tooltip-font-size: 1em; /* Bigger text in the same box just wraps type signatures earlier, so give the popup some more room to keep roughly the original characters per line. */ --lait-tooltip-max-width: 480px; } .lean-tooltip { font-size: var(--lait-tooltip-font-size); /* The runtime assigns `max-width` as an *inline* style — floating-ui's `size` middleware caps it at min(320px, availableWidth) — and inline styles beat stylesheet rules at any specificity, hence `!important`. The viewport clamp preserves what that cap was there for: not overflowing a narrow window. */ max-width: min(var(--lait-tooltip-max-width), calc(100vw - 24px)) !important; }