:root {
  --bg: #edf2f7;
  --surface: #ffffff;
  --surface-soft: #f8fafc;
  --line: #d7e0ec;
  --line-strong: #97a6ba;
  --text: #152033;
  --muted: #64748b;
  --primary: #2457d6;
  --primary-dark: #1e47ad;
  --primary-soft: #e8efff;
  --danger: #dc2626;
  --shadow: 0 18px 44px rgba(24, 37, 64, .12);
  --radius: 18px;
  --cell-size: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at top left, rgba(36, 87, 214, .08), transparent 34%),
    var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  user-select: none;
}

input,
select,
textarea {
  color: var(--text);
}

h1,
h2,
p {
  margin-top: 0;
}