@import url('https://fonts.googleapis.com/css2?family=Nanum+Gothic&display=swap');

:root {
  --background-color: #f0f2f5;
  --container-bg: #ffffff;
  --primary-color: #4a90e2;
  --primary-hover-color: #357abd;
  --text-color: #333333;
  --ball-text-color: #ffffff;
  --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  --ball-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

body {
  font-family: 'Nanum Gothic', sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  background-color: var(--container-bg);
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  text-align: center;
  width: 90%;
  max-width: 500px;
}

h1 {
  margin-bottom: 30px;
  font-size: 2.5rem;
  color: var(--primary-color);
}

#generate-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 15px 30px;
  font-size: 1.2rem;
  font-weight: bold;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.2s;
  margin-top: 30px;
  box-shadow: 0 4px 10px rgba(74, 144, 226, 0.4);
}

#generate-btn:hover {
  background-color: var(--primary-hover-color);
  transform: translateY(-2px);
}

#lotto-balls-container {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  min-height: 80px;
}