/**
 * Background fragments: scattered code/notation across full width, slow scroll.
 * Stays behind all content; sections with solid backgrounds cover it.
 */

.asm-bg {
  position: fixed;
  inset: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
  user-select: none;
}

.asm-bg-inner {
  display: flex;
  flex-direction: column;
  animation: asmScroll 120s linear infinite;
}

.asm-bg-set {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-8);
  align-content: start;
  padding: var(--sp-8);
  flex-shrink: 0;
}

.frag {
  font-size: 11px;
  line-height: 1.8;
  color: var(--text);
  opacity: 0.018;
  padding: var(--sp-2) 0;
}

.frag-col-1 { grid-column: 1; }
.frag-col-2 { grid-column: 2; }
.frag-col-3 { grid-column: 3; }

.frag-pt-sm { padding-top: var(--sp-6); }
.frag-pt-md { padding-top: var(--sp-12); }

.frag pre {
  margin: 0;
  font-family: "Ubuntu Mono", monospace;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
}

.frag-math {
  font-style: italic;
  font-family: "Ubuntu", sans-serif;
}

/* Syntax highlight tints (subtle; parent opacity keeps them soft) */
.asm-bg-inner .hl-kw {
  color: var(--accent);
}
.asm-bg-inner .hl-reg {
  color: var(--text);
}
.asm-bg-inner .hl-cmt {
  color: var(--muted);
}
.asm-bg-inner .hl-num {
  color: #c9a96e;
}

@keyframes asmScroll {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(-50%);
  }
}