* {
  border: 0;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --hue: 223;
  --sat: 10%;
  --white: hsl(0, 0%, 100%);
  --gray100: hsl(var(--hue), var(--sat), 90%);
  --gray200: hsl(var(--hue), var(--sat), 80%);
  --gray700: hsl(var(--hue), var(--sat), 30%);
  --gray800: hsl(var(--hue), var(--sat), 20%);
  --gray900: hsl(var(--hue), var(--sat), 10%);
  --gray950: hsl(var(--hue), var(--sat), 5%);
  --trans-dur: 0.3s;
  color-scheme: light dark;
  font-size: clamp(0.75rem, 0.7rem + 0.25vw, 1rem);
}

body {
  background-color: light-dark(var(--gray200), var(--gray950));
  color: light-dark(var(--gray900), var(--gray100));
  display: grid;
  place-items: center;
  font: 1em/1.5 -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, sans-serif;
  height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--trans-dur), color var(--trans-dur);
}

.avatar {
  aspect-ratio: 1;
  background-color: light-dark(var(--gray100), var(--gray700));
  border-radius: 50%;
  font-size: 2.5em;
  line-height: 1;
  display: grid;
  place-items: center;
  text-align: center;
  width: 100%;
  transition: background-color var(--trans-dur);
}

.note {
  height: 5.75em;
}
.note, .note__inner {
  animation-duration: 0.75s;
  animation-fill-mode: forwards;
}
.note__inner {
  animation-name: note-in;
  background-color: light-dark(var(--white), var(--gray800));
  border-radius: 1em;
  box-shadow: 0 0 1.5em rgba(0, 0, 0, 0.1);
  display: grid;
  grid-template-columns: 3.75em 1fr;
  gap: 1em;
  padding: 1em;
  padding-inline-end: 2em;
  width: 100%;
  max-width: 26em;
  transform-origin: 50% 100%;
  transition: background-color var(--trans-dur), box-shadow var(--trans-dur);
}
.note__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}
.note__message {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.note__title {
  font-size: 1em;
  font-weight: 600;
}
.note--out {
  animation-name: note-shrink;
}
.note--out .note__inner {
  animation-name: note-out;
  transform-origin: 50% 50%;
}
.note-center {
  display: flex;
  gap: 0.75em;
  flex-direction: column;
  align-items: center;
  padding: 0 1.5em;
  width: 100vw;
}

/* Animations */
@keyframes note-in {
  from {
    filter: blur(10px);
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    filter: blur(0);
    opacity: 1;
    transform: scale(1);
  }
}
@keyframes note-out {
  from {
    filter: blur(0);
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    filter: blur(10px);
    opacity: 0;
    transform: translateY(-100%) scale(1.1);
  }
}
@keyframes note-shrink {
  from {
    height: 5.75em;
  }
  to {
    height: 0;
  }
}