.ab-glass,
.ab-glass-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 0;
  border-radius: var(--ab-radius-glass);
  color: var(--ab-color-text-primary);
  background-color: var(--ab-color-glass);
  background-image: var(--ab-surface-glass);
  box-shadow: var(--ab-shadow-glass);
  -webkit-backdrop-filter: blur(var(--ab-surface-blur)) saturate(118%);
  backdrop-filter: blur(var(--ab-surface-blur)) saturate(118%);
}

.ab-glass::before,
.ab-glass-card::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  content: "";
  background:
    radial-gradient(circle at 16% 0%, rgba(234, 247, 255, 0.08), transparent 34%),
    linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.035), transparent);
}

.ab-glass--padded,
.ab-glass-card--padded {
  padding: clamp(var(--ab-space-5), 3vw, var(--ab-space-8));
}

.ab-glass--modal,
.ab-glass--elevated,
.ab-glass-card--elevated {
  background-color: var(--ab-color-glass-elevated);
  background-image: var(--ab-surface-glass-elevated);
  box-shadow: var(--ab-shadow-glass-elevated);
  -webkit-backdrop-filter: blur(var(--ab-surface-blur-elevated)) saturate(122%);
  backdrop-filter: blur(var(--ab-surface-blur-elevated)) saturate(122%);
}

/*
 * Restrained infrastructure edge for technical-core or premium-foundation
 * surfaces. It must not replace the cyan action hierarchy or semantic state.
 */
.ab-glass--bronze-edge {
  box-shadow:
    var(--ab-shadow-glass),
    inset 0 1px 0 rgba(215, 160, 106, 0.22),
    inset 0 0 0 1px var(--ab-bronze-muted);
}

.ab-glass--bronze-edge::before {
  background:
    radial-gradient(circle at 18% 0%, rgba(215, 160, 106, 0.11), transparent 36%),
    linear-gradient(90deg, transparent, rgba(185, 120, 66, 0.045), transparent);
}

.ab-glass__eyebrow,
.ab-glass-card__eyebrow {
  margin: 0 0 var(--ab-space-3);
  color: var(--ab-color-bridge-cyan);
  font: var(--ab-font-weight-semibold) var(--ab-font-size-technical) / 1.4 var(--ab-font-mono);
  letter-spacing: var(--ab-letter-spacing-technical);
  text-transform: uppercase;
}

.ab-glass__title,
.ab-glass-card__title {
  margin: 0;
  color: var(--ab-color-text-headline);
  font: var(--ab-font-weight-semibold) clamp(1.15rem, 2vw, 1.45rem) / 1.25 var(--ab-font-display);
  letter-spacing: -0.02em;
}

.ab-glass__body,
.ab-glass-card__body {
  margin: var(--ab-space-3) 0 0;
  color: var(--ab-color-text-secondary);
  font: var(--ab-font-weight-regular) var(--ab-font-size-body-small) / var(--ab-line-height-body) var(--ab-font-body);
}