*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  color: #000;
  background: #0c0c0c;
}

.bg {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  width: 75vmax;
  height: 75vmax;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  will-change: transform, filter;
}

.blob-a {
  top: -25%;
  left: -15%;
  background: #3b82f6;
  animation:
    float-a 32s ease-in-out infinite,
    hue-a 48s linear infinite;
}

.blob-b {
  bottom: -30%;
  right: -20%;
  background: #f97316;
  animation:
    float-b 38s ease-in-out infinite,
    hue-b 56s linear infinite;
}

.blob-c {
  top: 35%;
  left: 40%;
  width: 55vmax;
  height: 55vmax;
  background: #60a5fa;
  opacity: 0.35;
  animation:
    float-c 44s ease-in-out infinite,
    hue-c 64s linear infinite;
}

@keyframes float-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(12%, 8%) scale(1.08); }
  66%      { transform: translate(-6%, 14%) scale(0.95); }
}

@keyframes float-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(-14%, -10%) scale(1.1); }
  66%      { transform: translate(8%, -6%) scale(0.92); }
}

@keyframes float-c {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(-18%, 12%) scale(1.15); }
}

@keyframes hue-a {
  0%   { filter: blur(80px) hue-rotate(0deg); }
  100% { filter: blur(80px) hue-rotate(360deg); }
}

@keyframes hue-b {
  0%   { filter: blur(80px) hue-rotate(0deg); }
  100% { filter: blur(80px) hue-rotate(360deg); }
}

@keyframes hue-c {
  0%   { filter: blur(80px) hue-rotate(0deg); }
  100% { filter: blur(80px) hue-rotate(360deg); }
}

main {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 2rem;
  text-align: center;
}

h1 {
  margin: 0;
  font-size: clamp(3.25rem, 13vw, 6.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

#email {
  margin: 2.5rem 0 0;
  padding: 0;
  border: none;
  background: none;
  color: rgba(0, 0, 0, 0.55);
  font: inherit;
  font-size: clamp(0.9rem, 2.5vw, 1.05rem);
  font-weight: 400;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: color 0.2s ease;
}

#email:hover {
  color: #000;
}

.hint {
  margin: 0.75rem 0 0;
  min-height: 1.2em;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(0, 0, 0, 0.4);
}