/* ─────────────────────────────────────────────────────────────────
   BCF Base — Element resets, typography, layout primitives.
   Loaded after tokens.css. Loaded before components.css.
   ───────────────────────────────────────────────────────────────── */

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

html {
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
}

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--text-primary);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1 0 auto; }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

a {
  color: var(--cta-bg);
  text-decoration: none;
  transition: color var(--t-fast);
}
a:hover { color: var(--cta-bg-hover); }
a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--r-sm);
}

/* ─── Typography ────────────────────────────────────────────────── */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-display);
  font-weight: 800;
  line-height: var(--lh-tight);
  color: var(--text-primary);
  text-transform: uppercase;
}

/* Big display sizes can use tighter tracking; smaller headings need
   a touch of openness so uppercase doesn't look smooshed. */
h1 { font-size: var(--fs-display); letter-spacing: var(--tracking-display); }
h2 { font-size: var(--fs-4xl);     letter-spacing: var(--tracking-display); }
h3 { font-size: var(--fs-3xl);     letter-spacing: 0; }
h4 { font-size: var(--fs-2xl);     letter-spacing: var(--tracking-heading); }
h5 { font-size: var(--fs-xl);      letter-spacing: var(--tracking-heading); }
h6 { font-size: var(--fs-lg);      letter-spacing: var(--tracking-heading); }

p {
  font-size: var(--fs-base);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
}

p.lead {
  font-size: var(--fs-lg);
  color: var(--text-primary);
}

strong, b { font-weight: 600; color: var(--text-primary); }
em, i     { font-style: italic; }

small { font-size: var(--fs-sm); color: var(--text-tertiary); }

::selection {
  background: var(--bcf-amber);
  color: var(--bcf-white);
}

/* ─── Layout primitives ─────────────────────────────────────────── */

.bcf-container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

@media (min-width: 768px) {
  .bcf-container { padding: 0 var(--sp-6); }
}

.bcf-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
  color: var(--cta-bg);
}

.bcf-eyebrow::before {
  content: '';
  width: 24px;
  height: 2px;
  background: currentColor;
  display: inline-block;
}

/* ─── Accessibility ─────────────────────────────────────────────── */

/* Skip to content — appears on Tab from page top */
.bcf-skip {
  position: absolute;
  top: 0;
  left: 0;
  z-index: var(--z-toast);
  padding: var(--sp-3) var(--sp-5);
  background: var(--bcf-ink);
  color: var(--bcf-white);
  font-weight: 600;
  border-radius: 0 0 var(--r-md) 0;
  transform: translateY(-110%);
  transition: transform var(--t-fast);
}
.bcf-skip:focus-visible {
  transform: translateY(0);
  outline: none;
}

/* Show on desktop only — keeps mobile nav clean */
.bcf-show-desktop { display: none !important; }
@media (min-width: 1024px) {
  .bcf-show-desktop { display: inline-flex !important; }
}

/* Phone-only / tablet-and-up visibility — used by the field-card pattern
   so the overlay sheet only appears on phones, while tablets/desktops
   get a regular inline form. Breakpoint matches the overlay's panel
   layout switch in overlays.css. */
/* !important on both states because the elements that opt into these
   utilities (.bcf-field, .bcf-input-group) declare their own `display`
   in overlays.css, which loads after base.css and would otherwise
   win on source-order specificity. */
.bcf-mobile-only { display: block !important; }
.bcf-tablet-up   { display: none  !important; }
@media (min-width: 768px) {
  .bcf-mobile-only { display: none  !important; }
  .bcf-tablet-up   { display: block !important; }
}

/* Visually hidden but available to screen readers */
.bcf-sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* x-cloak: hide Alpine-controlled elements until JS hydrates */
[x-cloak] { display: none !important; }

/* Scroll-margin so anchor links don't get hidden under sticky nav */
:target { scroll-margin-top: calc(var(--header-h) + var(--sp-4)); }