/* ============================================
   CancerBrief Base Styles
   ============================================ */

/* --- Reset --- */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-ui);
  font-weight: var(--weight-regular);
  font-size: var(--text-body);
  line-height: var(--leading-normal);
  color: var(--color-ink);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(66, 214, 199, 0.06), transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(255, 93, 54, 0.03), transparent 50%),
    radial-gradient(circle 1px at center, color-mix(in srgb, var(--color-ink) 7%, transparent) 0.5px, transparent 0.5px),
    linear-gradient(90deg, rgba(66, 214, 199, 0.035) 0, rgba(66, 214, 199, 0.035) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--color-ink) 2.5%, transparent) 0, color-mix(in srgb, var(--color-ink) 2.5%, transparent) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 4px 4px, 96px 96px, 96px 96px;
  background-attachment: fixed, fixed, fixed, scroll, scroll;
}

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

a {
  color: var(--color-amber);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

a:hover {
  text-decoration: underline;
}

a:visited {
  color: var(--color-amber);
}

ul, ol {
  list-style: none;
}

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

/* --- Typography --- */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  text-transform: uppercase;
  text-wrap: balance;
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }

/* Uppercase label style */
.label {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.label--wide {
  letter-spacing: var(--tracking-ultra);
}

/* --- Utility --- */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}