*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
}

body.is-locked {
  overflow: hidden;
  touch-action: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
}

/* Accessible default focus — visible only for keyboard users */
:focus { outline: none; }

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 4px;
}

/* Hide content from screen readers without affecting layout. */
[hidden] { display: none !important; }

/* Ensure anchor-targeted sections aren't hidden under the sticky header. */
:where(section, h1, h2, h3, h4, [id]) {
  scroll-margin-top: calc(var(--header-h) + 1rem);
}