Frutiger Aero Button Generator

/* Authentic Frutiger Aero Button CSS */
.frutiger-aero-button {
  /* OKLCH Color System for accurate colors */
  --hue: 140;
  --sat: 0.2;
  --glow-intensity: 0.7;
  
  /* Color Variables */
  --fg: oklch(15% calc(var(--sat) * 0.5) var(--hue));
  --bg: oklch(75% var(--sat) var(--hue) / 0.8);
  --bg-dark: oklch(45% var(--sat) var(--hue) / 0.75);
  --bottom-glow: radial-gradient(
    farthest-corner at bottom center,
    rgba(255, 255, 255, var(--glow-intensity)),
    transparent
  );
  
  /* Base Styling */
  background-color: var(--bg);
  background: 
    var(--bottom-glow),
    linear-gradient(to bottom, var(--bg-dark), var(--bg));
  
  border: 1px solid var(--bg);
  border-radius: 9999px;
  
  /* Shadows and Effects */
  box-shadow: 0 4px 4px rgba(0, 0, 0, 0.4);
  
  /* Typography */
  color: var(--fg);
  font-family: "Lucida Grande", "Lucida Sans Unicode", "Segoe UI", system-ui, sans-serif;
  font-weight: 700;
  text-shadow: 0 2px 0.5em rgba(0, 0, 0, 0.2);
  
  /* Layout */
  cursor: pointer;
  position: relative;
  transition: all 300ms ease;
  
  /* Prevent text selection */
  user-select: none;
  -webkit-user-select: none;
}

/* Top Highlight Effect */
.frutiger-aero-button::after {
  content: "";
  position: absolute;
  top: 4%;
  left: 0.75em;
  width: calc(100% - 1.5em);
  height: 40%;
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.8),
    rgba(255, 255, 255, 0.1)
  );
  border-radius: inherit;
  transition: background 400ms ease;
  pointer-events: none;
}

/* Hover State */
.frutiger-aero-button:hover,
.frutiger-aero-button:focus {
  box-shadow: 0 6px 8px rgba(0, 0, 0, 0.4);
  transform: translateY(-1px);
}

/* Active State */
.frutiger-aero-button:active {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
  transform: translateY(1px);
}

/* Size Variations */
.frutiger-aero-button.small {
  padding: 0.5em 1.5em;
  font-size: 0.875rem;
}

.frutiger-aero-button.medium {
  padding: 0.75em 2em;
  font-size: 1rem;
}

.frutiger-aero-button.large {
  padding: 1em 3em;
  font-size: 1.125rem;
}