:root {
  --color-surface-white: #ffffff;
  --color-surface-black: #000000;
  --transition-speed: 200ms;
  --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
  --entrance-duration: 400ms;
  --entrance-easing: cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes fadeInScale {
  0% {
    opacity: 0;
    transform: scale(0.7);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}
@keyframes subtlePulse {
  0%, 100% {
    box-shadow: var(--shadow-glass);
  }
  50% {
    box-shadow: 0px 6px 12px 0px rgba(184, 184, 184, 0.18), 0px 10px 34px 5px rgba(222, 222, 222, 0.7), 1px 1px 60px 0px rgba(195, 195, 195, 0.25);
  }
}
.skip-button {
  appearance: none;
  border: none;
  cursor: pointer;
  background: none;
  padding: 0;
  margin: 0;
  font: inherit;
  color: inherit;
  outline: none;
  position: relative;
  display: flex;
  width: 50px;
  height: 45px;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  border-radius: 12px;
  box-sizing: border-box;
  background: linear-gradient(0deg, rgba(223, 223, 223, 0.7) 0%, rgba(223, 223, 223, 0.7) 100%), #fff;
  box-shadow: 0 6px 9.2px 0 rgba(184, 184, 184, 0.12), -7px -8px 4px 0 rgba(255, 255, 255, 0.25) inset, 0 10px 30px 5px rgba(222, 222, 222, 0.6), 7px 8px 18px 2px rgba(233, 233, 233, 0.62) inset, 1px 1px 60px 0 rgba(195, 195, 195, 0.2);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: transform var(--transition-speed) var(--transition-easing), box-shadow var(--transition-speed) var(--transition-easing), background var(--transition-speed) var(--transition-easing);
  animation: fadeInScale var(--entrance-duration) var(--entrance-easing) both;
}
.skip-button::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.1) 40%, rgba(255, 255, 255, 0.1) 60%, rgba(255, 255, 255, 0.9) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  pointer-events: none;
}
.skip-button:hover {
  transform: scale(1.08);
  box-shadow: 0 8px 14px 0 rgba(184, 184, 184, 0.18), -7px -8px 4px 0 rgba(255, 255, 255, 0.3) inset, 0 12px 36px 6px rgba(222, 222, 222, 0.7), 7px 8px 18px 2px rgba(233, 233, 233, 0.68) inset, 1px 1px 60px 0 rgba(195, 195, 195, 0.28);
}
.skip-button:active {
  transform: scale(0.95);
  box-shadow: 0 3px 5px 0 rgba(184, 184, 184, 0.1), -7px -8px 4px 0 rgba(255, 255, 255, 0.2) inset, 0 5px 15px 2px rgba(222, 222, 222, 0.4), 7px 8px 18px 2px rgba(233, 233, 233, 0.5) inset, 1px 1px 30px 0 rgba(195, 195, 195, 0.15);
}
.skip-button:focus-visible {
  outline: 2px solid rgba(0, 100, 255, 0.5);
  outline-offset: 3px;
}
.skip-button__icon {
  width: 11px;
  height: 11px;
  flex-shrink: 0;
  color: var(--color-surface-black);
  transition: transform var(--transition-speed) var(--transition-easing), opacity var(--transition-speed) var(--transition-easing);
}
.skip-button:hover .skip-button__icon {
  transform: rotate(90deg);
}
.skip-button:active .skip-button__icon {
  opacity: 0.7;
}

@media (prefers-reduced-motion: reduce) {
  .skip-button {
    animation: none;
    transition: none;
  }
  .skip-button__icon {
    transition: none;
  }
}

/* ── Demo page layout ─────────────────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-surface-white);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}