.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
}

.glass--darker {
  background: var(--glass-bg-darker);
}

.glass--light {
  background: rgba(51, 65, 85, 0.4);
  border-color: rgba(148, 163, 184, 0.2);
}

.glass--accent {
  border-color: rgba(14, 165, 233, 0.3);
  box-shadow: var(--glow-accent);
}

.glass--success {
  border-color: rgba(34, 197, 94, 0.3);
  box-shadow: var(--glow-success);
}

.glass--error {
  border-color: rgba(239, 68, 68, 0.3);
}

.glass--hover {
  transition: all var(--transition-base);
}

.glass--hover:hover {
  border-color: rgba(14, 165, 233, 0.4);
  box-shadow: var(--glow-accent);
  transform: translateY(-2px);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
}

.glass-card--lg {
  padding: var(--space-2xl);
}

@media (min-width: 768px) {
  .glass-card--lg {
    padding: var(--space-3xl);
  }
}

.glass-gradient-border {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-radius: var(--radius-xl);
  border: none;
}

.glass-gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}