:root {
  --neu-base: #E8E8E8;
  --neu-blue: #C8E0F4;
  --neu-pink: #F5E0E8;
  --neu-light: #FFFFFF;
  --neu-dark: #D0D0D0;
  --neu-accent: #7B68EE;
  --neu-heading: #3F3F46;
  --neu-text: #52525B;
}

* {
  box-sizing: border-box;
}

body {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 48px 20px 72px;
  overflow-x: hidden;
  background: var(--neu-base);
  color: var(--neu-text);
  font-family: system-ui, sans-serif;
}

/* A soft glow drifts behind the card for a little extra depth. */
body::before {
  position: fixed;
  z-index: -1;
  top: 12%;
  left: 50%;
  width: min(70vw, 520px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 224, 244, .75), rgba(245, 224, 232, .35) 48%, transparent 72%);
  content: "";
  filter: blur(12px);
  transform: translateX(-50%);
  animation: glow-drift 9s ease-in-out infinite alternate;
}

h1,
h2,
h3 {
  color: var(--neu-heading);
  font-weight: 600;
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -.055em;
}

h1 span {
  color: var(--neu-accent);
}

.card {
  width: min(100%, 720px);
  padding: clamp(2rem, 7vw, 4.5rem);
  border-radius: 1.5rem;
  background: var(--neu-base);
  box-shadow: -10px -10px 30px var(--neu-light), 10px 10px 30px var(--neu-dark);
  text-align: center;
  animation: card-arrive 800ms cubic-bezier(.2, .8, .2, 1) both, card-float 6s ease-in-out 900ms infinite;
}

.eyebrow {
  margin: 0 0 1.5rem;
  color: var(--neu-accent);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .18em;
  animation: fade-up 650ms 180ms both;
}

.intro {
  max-width: 480px;
  margin: 1.5rem auto 2rem;
  color: var(--neu-text);
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  line-height: 1.7;
  animation: fade-up 650ms 300ms both;
}

.button {
  display: inline-flex;
  min-width: 3.5rem;
  min-height: 3.5rem;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: .75rem 1.5rem;
  border: 0;
  border-radius: 9999px;
  background: var(--neu-base);
  color: var(--neu-heading);
  font-weight: 600;
  text-decoration: none;
  box-shadow: -5px -5px 15px var(--neu-light), 5px 5px 15px var(--neu-dark);
  transition: box-shadow 150ms ease, transform 150ms ease, color 150ms ease;
  animation: fade-up 650ms 420ms both;
}

.button:hover {
  color: var(--neu-accent);
  transform: translateY(-2px);
}

.button:active {
  box-shadow: inset -5px -5px 15px var(--neu-light), inset 5px 5px 15px var(--neu-dark);
  transform: translateY(0);
}

.button--primary {
  min-width: 4.5rem;
  min-height: 4.5rem;
  font-size: 1.05rem;
}

.button:focus-visible {
  outline: 3px solid var(--neu-accent);
  outline-offset: 4px;
}

.chip {
  display: inline-grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border-radius: 1rem;
  background: var(--neu-blue);
  color: var(--neu-heading);
  box-shadow: -4px -4px 10px var(--neu-light), 4px 4px 10px var(--neu-dark);
}

.chip--pink {
  background: var(--neu-pink);
}

.inset {
  padding: 1.5rem;
  border-radius: 1rem;
  background: var(--neu-base);
  box-shadow: inset -5px -5px 15px var(--neu-light), inset 5px 5px 15px var(--neu-dark);
}

.progress {
  height: .5rem;
  border-radius: 9999px;
  box-shadow: inset -2px -2px 5px var(--neu-light), inset 2px 2px 5px var(--neu-dark);
}

.progress__fill {
  width: 68%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(145deg, #7B68EE, #9370DB);
  box-shadow: 0 0 10px rgba(123, 104, 238, .5);
}

footer {
  position: fixed;
  inset: auto 16px 18px;
  color: #777782;
  font-size: .8rem;
  text-align: center;
  animation: fade-up 700ms 550ms both;
}

@keyframes card-arrive {
  from { opacity: 0; transform: translateY(24px) scale(.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes card-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-7px); }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes glow-drift {
  from { opacity: .65; transform: translate(-54%, -2%) scale(.94); }
  to { opacity: 1; transform: translate(-46%, 5%) scale(1.08); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}