/*
 * TLC base: element defaults on top of tokens.css.  Include after tokens.css.
 * It styles bare elements only (no classes), so it is safe to drop into an
 * existing page; components.css carries the tlc-* classes.
 */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--tlc-page);
  color: var(--tlc-text);
  font-family: var(--tlc-font);
  font-size: var(--tlc-text-md);
  line-height: var(--tlc-leading);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--tlc-accent-border); color: var(--tlc-text); }

h1, h2, h3, h4 {
  font-family: var(--tlc-display);
  color: var(--tlc-text);
  line-height: var(--tlc-leading-tight);
  letter-spacing: -0.01em;
  margin: 0 0 var(--tlc-space-3);
  text-wrap: balance;
}
h1 { font-size: var(--tlc-text-2xl); font-weight: 700; }
h2 { font-size: var(--tlc-text-xl); font-weight: 700; margin-top: var(--tlc-space-6); }
h3 { font-size: var(--tlc-text-lg); font-weight: 650; margin-top: var(--tlc-space-5); }
h4 { font-size: var(--tlc-text-md); font-weight: 650; margin-top: var(--tlc-space-4); }

p, ul, ol, dl, blockquote { margin: 0 0 var(--tlc-space-4); }
p, li, dd, blockquote { max-width: var(--tlc-measure); }
li + li { margin-top: var(--tlc-space-1); }
strong, b { font-weight: 700; }
small { font-size: var(--tlc-text-sm); }

/* Links in prose are always underlined: colour alone is not a cue. */
a {
  color: var(--tlc-accent);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: var(--tlc-focus-width) solid var(--tlc-focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 calc(var(--tlc-focus-width) + 2px) var(--tlc-focus-halo);
  border-radius: 3px;
}

code, kbd, samp, pre { font-family: var(--tlc-mono); font-size: 0.94em; }
code {
  overflow-wrap: anywhere;
  background: var(--tlc-surface-2);
  border: 1px solid var(--tlc-border);
  border-radius: 5px;
  padding: 0.05em 0.35em;
}
kbd {
  background: var(--tlc-surface);
  border: 1px solid var(--tlc-border-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 0.05em 0.4em;
}
pre {
  background: var(--tlc-surface-2);
  border: 1px solid var(--tlc-border);
  border-radius: var(--tlc-radius);
  padding: var(--tlc-space-3) var(--tlc-space-4);
  overflow: auto;
  line-height: 1.5;
  tab-size: 8;
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }

hr { border: 0; border-top: 1px solid var(--tlc-border); margin: var(--tlc-space-6) 0; }

img, svg, video { max-width: 100%; height: auto; }

table { border-collapse: collapse; }
th { text-align: left; font-weight: 700; color: var(--tlc-text-2); }

input, select, textarea, button { font: inherit; color: inherit; }
input[type="checkbox"], input[type="radio"] {
  accent-color: var(--tlc-accent-solid);
  width: 1.15rem; height: 1.15rem;
}

details > summary { cursor: pointer; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Windows high contrast and other forced palettes: keep boundaries visible. */
@media (forced-colors: active) {
  :focus-visible { outline-color: Highlight; box-shadow: none; }
}