:root {
  --accent: #3E63DD;
  --paper: #F2F5FF;
  --ink: #1A1F33;
  --card: #ffffff;
  --line: rgb(0 0 0 / 15%);
  --radius: 8px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #15171a;
    --ink: #e8e6e3;
    --card: #1f2226;
    --line: rgb(255 255 255 / 18%);
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 24px 16px;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.5 ui-rounded, "SF Pro Rounded", system-ui, sans-serif;
}

.card {
  width: 100%;
  max-width: 560px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 28px 24px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 8px 30px rgb(0 0 0 / 8%);
}

header {
  text-align: center;
}

h1 {
  margin: 0;
  font-size: 32px;
  color: var(--accent);
}

.tagline {
  margin: 4px 0 0;
  opacity: 0.75;
}

.field,
legend,
dt,
.note,
footer {
  font-size: 13px;
  opacity: 0.65;
}

.field {
  margin-bottom: -10px;
}

textarea {
  width: 100%;
  min-height: 160px;
  padding: 12px;
  resize: vertical;
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1.5px solid var(--line);
  border-radius: calc(var(--radius) / 2);
}

textarea:focus {
  outline: 2px solid var(--accent);
  border-color: transparent;
}

.counts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 0;
}

@media (max-width: 480px) {
  .counts {
    grid-template-columns: repeat(2, 1fr);
  }
}

.counts div {
  padding: 10px 12px;
  border-radius: calc(var(--radius) / 2);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.counts .main {
  color: #ffffff;
  background: var(--accent);
}

.counts .main dt {
  opacity: 0.9;
}

dd {
  margin: 0;
  font-size: 24px;
  font-variant-numeric: tabular-nums;
}

.options {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 0;
  padding: 10px 12px;
  border: 1.5px solid var(--line);
  border-radius: calc(var(--radius) / 2);
}

.options label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--accent);
}

button {
  align-self: flex-start;
  padding: 10px 16px;
  font: inherit;
  cursor: pointer;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border: 0;
  border-radius: calc(var(--radius) / 2);
}

.note {
  margin: 0;
}