/* =============================================================================
   BASE — reset + element defaults. Scoped under .bfr. Reads ONLY tokens.
   ========================================================================== */

*,*::before,*::after{box-sizing:border-box}
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth }

/* No-horizontal-overflow guarantee (learned bug: inner flex children expanding) */
html,body{ overflow-x:hidden; max-width:100%; margin:0; padding:0 }

.bfr{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:var(--fs-base);
  line-height:1.65;
  font-weight:400;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.bfr :where(h1,h2,h3,h4){
  font-family:var(--font-heading);
  line-height:1.15;
  letter-spacing:-.01em;
  color:var(--text);
  margin:0;
}
.bfr p{margin:0}
.bfr a{color:inherit;text-decoration:none}
.bfr img{max-width:100%;height:auto;display:block}
.bfr svg{display:block}
.bfr ul{margin:0;padding:0;list-style:none}
.bfr button{font-family:inherit}

/* flex/grid children must be allowed to shrink to prevent overflow */
.bfr :where(main,section,.container,.grid,.row) > *{min-width:0}

/* Shared layout container */
.bfr .container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

/* Section rhythm — a touch more vertical breathing room, kept EQUAL between
   siblings (all full sections share one padding; tight/alt only change tone). */
.bfr .section{ padding-block:clamp(76px, 10vw, 120px) }
.bfr .section--tight{ padding-block:clamp(52px, 6.5vw, 78px) }
/* Toned bands break up the page so it never reads as one flat surface. A hairline
   top/bottom rule delineates each toned band from its neighbours (both themes). */
.bfr .section--alt{ background:var(--bg-2); border-block:1px solid var(--border) }
.bfr .section--alt2{ background:var(--bg-3); border-block:1px solid var(--border) }

/* Eyebrow + heading helpers.
   The eyebrow is a small brand PILL (accent-soft chip with a leading dot) so the
   type hierarchy reads clearly from eyebrow -> heading -> subhead. Token-driven. */
.bfr .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-heading);
  font-size:var(--fs-xs);
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  padding:6px 14px;
  border-radius:var(--radius-pill);
  background:var(--accent-soft);
  border:1px solid var(--accent-border);
  margin-bottom:var(--space-5);
}
.bfr .eyebrow::before{
  content:""; width:6px; height:6px; border-radius:50%;
  background:var(--eyebrow-line); flex:0 0 auto;
}
.bfr .section-head{ position:relative; max-width:680px; margin:0 auto clamp(44px,6vw,64px); text-align:center }
/* soft accent glow behind the major section heading = subtle depth */
.bfr .section-head::before{
  content:""; position:absolute; z-index:0; pointer-events:none;
  left:50%; top:38%; transform:translate(-50%,-50%);
  width:min(560px,88%); height:220px;
  background:var(--section-glow); filter:blur(28px);
}
.bfr .section-head > *{ position:relative; z-index:1 }
.bfr .section-head h2{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(1.9rem, 4.4vw, 3rem);
  letter-spacing:-.025em;
  line-height:1.1;
}
.bfr .section-head p{ margin-top:var(--space-4); color:var(--text-muted); font-size:var(--fs-lg) }
.bfr .grad-text{
  background:var(--grad-brand-text);
  background-size:200% 200%;
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent; color:transparent;
  animation:gradText 6s ease infinite;
}

/* Accessible focus ring */
.bfr a:focus-visible,
.bfr button:focus-visible,
.bfr [tabindex]:focus-visible,
.bfr summary:focus-visible{
  outline:2px solid var(--ring);
  outline-offset:3px;
  border-radius:var(--radius-sm);
}

/* Skip link */
.bfr .skip-link{
  position:absolute; left:var(--space-4); top:-60px; z-index:1200;
  background:var(--primary); color:var(--primary-fg);
  padding:10px 18px; border-radius:var(--radius-sm); font-weight:600;
  transition:top var(--dur-fast) var(--ease);
}
.bfr .skip-link:focus{ top:var(--space-4) }

@media (prefers-reduced-motion:reduce){
  .bfr *,.bfr *::before,.bfr *::after{ animation:none!important; transition:none!important; scroll-behavior:auto!important }
}