:root {
  --bg: #f3f7ff;
  --card: #ffffff;
  --line: #d8e0ef;
  --text: #14213d;
  --muted: #5d6a85;
  --accent: #1f6feb;
  --ball: #e9f1ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Pretendard", "Noto Sans KR", sans-serif;
  color: var(--text);
  background: radial-gradient(900px 500px at 10% 10%, #dce8ff, transparent 50%), var(--bg);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(560px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 12px 30px rgba(28, 43, 75, 0.12);
  text-align: center;
}

h1 {
  margin: 0 0 8px;
  font-size: 30px;
}

.sub {
  margin: 0 0 20px;
  color: var(--muted);
}

button {
  border: 0;
  border-radius: 10px;
  padding: 12px 18px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
}

.numbers {
  margin: 20px 0 8px;
  padding: 0;
  list-style: none;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.number-ball {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--ball);
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 700;
}

.history {
  margin: 12px 0 0;
  color: var(--muted);
}

@media (max-width: 480px) {
  h1 {
    font-size: 26px;
  }

  .number-ball {
    width: 46px;
    height: 46px;
    font-size: 18px;
  }
}