:root {
  font-family: system-ui, sans-serif;
  color: #111827;
  background: #f8fafc;
}

body {
  margin: 0;
}

main {
  display: grid;
  justify-items: center;
  gap: 24px;
  min-height: 100dvh;
  padding: 48px 16px;
  box-sizing: border-box;
}

.avatar-host {
  width: min(100%, 360px);
  min-height: 280px;
  display: grid;
  place-items: center;
  border: 1px solid #cbd5e1;
  border-radius: 24px;
  background: white;
}

.avatar-overlay {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 10;
  width: 128px;
  height: 128px;
}

.expression-picker {
  width: min(100%, 720px);
}

.expression-picker__heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.expression-picker h2 {
  margin: 0;
  font-size: 1.125rem;
}

.expression-picker output {
  color: #475569;
}

.expression-picker__list {
  display: grid;
  grid-template-areas:
    'up-left up-center up-right'
    'middle-left middle-center middle-right'
    'down-left down-center down-right';
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: 1fr 3fr 1fr;
  align-items: center;
  aspect-ratio: 1;
  min-height: 640px;
  gap: 12px;
  margin-top: 16px;
  padding: 32px;
  box-sizing: border-box;
  border: 1px solid #cbd5e1;
  border-radius: 50%;
  background: radial-gradient(circle, #ffffff 0 28%, #eef2ff 28.25% 100%);
}

.expression-picker__group {
  min-width: 0;
}

.expression-picker__group h3 {
  margin: 0 0 8px;
  color: #475569;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
}

.expression-picker__group--up-left {
  grid-area: up-left;
}

.expression-picker__group--up-center {
  grid-area: up-center;
}

.expression-picker__group--up-right {
  grid-area: up-right;
}

.expression-picker__group--middle-left {
  grid-area: middle-left;
}

.expression-picker__group--middle-center {
  grid-area: middle-center;
  padding: 16px;
  border-radius: 24px;
  background: white;
  box-shadow: 0 8px 24px rgb(15 23 42 / 8%);
}

.expression-picker__group--middle-center .expression-picker__group-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.expression-picker__group--middle-right {
  grid-area: middle-right;
}

.expression-picker__group--down-left {
  grid-area: down-left;
}

.expression-picker__group--down-center {
  grid-area: down-center;
}

.expression-picker__group--down-right {
  grid-area: down-right;
}

.expression-picker__group-list {
  display: grid;
  gap: 8px;
}

.expression-picker__group button {
  width: 100%;
  min-height: 52px;
  padding: 8px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  color: #1e293b;
  background: white;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.25;
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.expression-picker__group button:hover {
  border-color: #818cf8;
  background: #eef2ff;
}

.expression-picker__group button:active {
  transform: scale(0.98);
}

button {
  min-height: 44px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  color: white;
  background: #4338ca;
  font: inherit;
  cursor: pointer;
}

button.is-selected {
  border-color: #312e81;
  background: #312e81;
  color: white;
  box-shadow: 0 0 0 3px #c7d2fe;
}

button:focus-visible {
  outline: 3px solid #4338ca;
  outline-offset: 3px;
}

@media (max-width: 640px) {
  .expression-picker__heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .expression-picker__list {
    grid-template-areas: none;
    grid-template-columns: 1fr;
    grid-template-rows: none;
    aspect-ratio: auto;
    min-height: 0;
    gap: 20px;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: none;
  }

  .expression-picker__group {
    grid-area: auto;
  }

  .expression-picker__group--middle-center {
    padding: 0;
    border-radius: 0;
    background: none;
    box-shadow: none;
  }
}