/* ==========================================================================
   brettdavis.ai - Base
   Reset, typographic foundations, and the accessibility floor.
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  font-feature-settings: "kern" 1, "liga" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

/* ---- Headings ---------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-display);
  text-wrap: balance;
}

p { max-width: var(--width-prose); }

/* ---- Links --------------------------------------------------------------
   Body links: ink with a hairline underline that turns accent on hover.  */
a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-color: var(--color-hairline-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: text-decoration-color var(--duration-fast) var(--ease),
              color var(--duration-fast) var(--ease);
}

a:hover { text-decoration-color: var(--color-accent); }

/* Navigational and card links carry no underline; hover states are theirs */
a.plain { text-decoration: none; }

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

/* ---- Accessibility floor ------------------------------------------------ */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--gutter);
  background: var(--color-ink);
  color: var(--color-bg);
  padding: var(--space-1) var(--space-2);
  z-index: 100;
  text-decoration: none;
  font-size: var(--text-small);
}
.skip-link:focus { top: var(--space-2); }

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

/* Respect users who prefer less motion - everywhere, unconditionally */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}