/* Sprint 10.5B — shared document foundations */
html {
  color-scheme: light;
  background: var(--amp-color-bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--amp-color-bg);
  color: var(--amp-color-text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: var(--amp-font-size-md);
  line-height: var(--amp-line-normal);
  -webkit-text-size-adjust: 100%;
}

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

h1, h2, h3, p { overflow-wrap: anywhere; }
h1, h2, h3 { color: var(--amp-color-text); }
h1 { font-size: var(--amp-font-size-3xl); line-height: var(--amp-line-tight); }
h2 { font-size: var(--amp-font-size-2xl); line-height: 1.3; }
h3 { font-size: var(--amp-font-size-xl); line-height: 1.35; }

button, input, select, textarea { font: inherit; }
button, a, input, select, textarea { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }

a { color: var(--amp-color-primary); text-underline-offset: 0.15em; }
a:hover { color: var(--amp-color-primary-hover); }

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--amp-color-focus);
  outline-offset: 3px;
}

::selection { background: #d8e8fa; color: var(--amp-color-text); }

.hidden { display: none !important; }
.subtle { color: var(--amp-color-text-muted); }
.small { font-size: var(--amp-font-size-sm); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}