/* neural-hero.css — Neural hero (background brain mode) */

.hero--neural { padding-top: 8rem; padding-bottom: 4rem; position: relative; overflow: hidden; min-height: 100svh; }

.nh-bg { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.nh-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black, transparent 80%);
  opacity: 0.6;
}
.nh-bg-vignette {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 50%, color-mix(in oklab, var(--accent) 14%, transparent), transparent 75%),
    radial-gradient(ellipse 40% 50% at 20% 70%, color-mix(in oklab, var(--accent-2) 8%, transparent), transparent 70%);
}

/* Brain canvas — full hero, behind everything */
.hero-neural-bg-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.hero-neural-bg-canvas .bsvg {
  width: min(95%, 1100px);
  height: auto;
  max-height: 88vh;
  filter: drop-shadow(0 0 60px color-mix(in oklab, var(--accent) 22%, transparent));
}

/* Dendrite canvas — full bleed across hero */
.dn-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
}

/* Radial fade behind text — keeps title legible over the dendrite network */
.hero-neural-fade {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    radial-gradient(ellipse 42% 32% at 50% 52%, color-mix(in oklab, var(--bg-0) 82%, transparent) 0%, color-mix(in oklab, var(--bg-0) 50%, transparent) 45%, transparent 78%),
    linear-gradient(to bottom, color-mix(in oklab, var(--bg-0) 35%, transparent) 0%, transparent 18%, transparent 65%, var(--bg-0) 100%);
}

/* Centered title content over the brain */
.hero-neural-center {
  position: relative;
  z-index: 3;
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 3rem);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 80vh;
  justify-content: center;
}

.display--neural {
  font-size: clamp(3.5rem, 11vw, 9rem);
  text-align: center;
  text-shadow: 0 0 40px color-mix(in oklab, var(--bg-0) 60%, transparent);
}

/* 3D stage — no border/radius now, blends into hero */
.nh3-stage {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.nh3-stage canvas { display: block; width: 100% !important; height: 100% !important; }
.nh3-loading {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  pointer-events: none;
}
.nh3-error { color: color-mix(in oklab, var(--accent) 70%, var(--text-dim)); }