html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.glass-scene {
  position: relative;
  width: min(240px, 80vw);
  height: 168px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 16px;
}

.glass-scene__blob {
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 1;
  transform: translate(-30px, -20px);
}

.glass-scene__blob--a {
  background: radial-gradient(circle, #c5dfe2, transparent 68%);
  top: 8%;
  left: 8%;
}

.glass-scene__blob--b {
  background: radial-gradient(circle, #eddae1, transparent 68%);
  bottom: 3%;
  right: 3%;
}

.glass-card {
  position: relative;
  z-index: 1;
  width: min(185px, 66vw);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.glass-card__title {
  margin: 0 0 4px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  font-family: inherit;
}

.glass-card__input {
  width: 100%;
  box-sizing: border-box;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  font-size: 12px;
  font-family: inherit;
}
.glass-card__input::placeholder {
  color: rgba(255, 255, 255, 0.65);
}
.glass-card__input:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 1px;
}

.glass-card__btn {
  margin-top: 4px;
  padding: 8px;
  border: none;
  border-radius: 8px;
  background: #2f6df6;
  color: #ffffff;
  font-weight: 700;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  transition: transform 140ms ease-out, box-shadow 140ms ease-out;
}
.glass-card__btn:hover, .glass-card__btn:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
}
.glass-card__btn:active {
  transform: translateY(0);
}

.glass-scene.is-demo .glass-scene__blob--a {
  animation: drift-a 2s ease-out infinite;
}

.glass-scene.is-demo .glass-scene__blob--b {
  animation: drift-b 2s ease-out infinite;
}

@keyframes drift-a {
  0%, 100% {
    transform: translate(-30px, -20px) scale(1);
  }
  50% {
    transform: translate(40px, 30px) scale(1.15);
  }
}
@keyframes drift-b {
  0%, 100% {
    transform: translate(20px, 10px) scale(1);
  }
  50% {
    transform: translate(-40px, -25px) scale(1.2);
  }
}
@media (prefers-reduced-motion: reduce) {
  .glass-scene.is-demo .glass-scene__blob--a,
  .glass-scene.is-demo .glass-scene__blob--b {
    animation: none;
  }
  .glass-card__btn {
    transition: none;
  }
}