* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: 'Noto Sans KR', sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  text-align: center;
  padding-bottom: 20px;
  background-color: #fff;
  color: #000;
}

header {
  width: 100%;
  padding: 20px 0;
  border-bottom: 2px solid #ddd;
  align-items: space-between;
}

header h1 {
  font-size: 30px;
}

main {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.title {
  font-size: 40px;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 20px;
  margin-bottom: 30px;
  color: #555;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  background-color: #000;
  color: #fff;
  text-decoration: none;
  font-size: 18px;
  border-radius: 8px;
  transition: background-color 0.3s;
}

.download-btn:hover {
  background-color: #333;
}

.download-btn img {
  width: 40px;
  height: 40px;
  margin-right: 10px;
}

footer {
  width: 100%;
  padding: 10px 0;
  font-size: 14px;
  color: #888;
  border-top: 2px solid #ddd;
}

/* 반응형 스타일 */
@media (max-width: 768px) {
  .title {
    font-size: 32px;
  }

  .subtitle {
    font-size: 18px;
  }

  .download-btn {
    font-size: 16px;
    padding: 10px 16px;
  }

  .download-btn img {
    width: 32px;
    height: 32px;
  }
}

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

  .subtitle {
    font-size: 16px;
  }

  .download-btn {
    font-size: 14px;
    padding: 8px 14px;
  }

  .download-btn img {
    width: 28px;
    height: 28px;
  }

  header h1 {
    font-size: 25px;
  }

  footer {
    font-size: 12px;
  }
}

/* 🌙 다크 모드 지원 */
@media (prefers-color-scheme: dark) {
  body {
    background-color: #121212;
    color: #eee;
  }

  header {
    border-bottom: 2px solid #444;
  }

  .subtitle {
    color: #aaa;
  }

  .download-btn {
    background-color: #fff;
    color: #000;
  }

  .download-btn:hover {
    background-color: #ddd;
  }

  footer {
    color: #aaa;
    border-top: 2px solid #444;
  }
}