/* ==========================================================================
   base.css  —  reset + element defaults (v1.0.0)
   Load order: tokens.css -> base.css -> layout.css -> components.css ->
   utilities.css ; theme.css after tokens.
   ========================================================================== */

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;   /* we draw our own :active feedback */
  color-scheme: light dark;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  font-weight: var(--fw-regular);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  min-height: 100dvh;
  transition: background-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

h1, h2, h3, h4, h5, h6 {
  line-height: var(--lh-tight);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
}
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }

p { line-height: var(--lh-base); }

a {
  color: var(--accent-b);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover { text-decoration: underline; }

img, svg, video { display: block; max-width: 100%; }
svg { fill: none; }

ul, ol { list-style: none; padding: 0; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button { cursor: pointer; background: none; border: none; }

:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}
:focus:not(:focus-visible) { outline: none; }

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

/* Coarse-pointer (touch) global affordance: comfortable line-height for taps. */
@media (pointer: coarse) {
  body { line-height: 1.6; }
}