/* ===========================================================================
   Level Up Learning — Base / reset + a few brand utilities
   Lightweight: sets document defaults so specimens & kits inherit the brand.
   =========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--type-base);
  line-height: var(--leading-normal);
  color: var(--text-body);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Headings default to display face, tight + heavy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-strong);
  font-weight: var(--fw-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin: 0;
}

a { color: var(--text-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: var(--mint-300); color: var(--ink); }

:focus-visible {
  outline: var(--ring-width) solid var(--focus-ring);
  outline-offset: var(--ring-offset);
  border-radius: var(--radius-sm);
}

/* --- Brand utility classes (handy in specimens / kits) --- */
.lu-eyebrow {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: var(--type-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-accent);
}
.lu-display {
  font-family: var(--font-display);
  font-weight: var(--fw-black);
  text-transform: uppercase;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-none);
  color: var(--text-strong);
}
.lu-container {
  width: 100%;
  max-width: var(--container-xl);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
/* Mint highlight behind/under display words */
.lu-mark {
  background: var(--mint-300);
  padding: 0 0.12em;
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
}