/* ✨ ベーススタイル */
body {
  font-family: "Segoe UI", "Noto Sans JP", sans-serif;
  padding: 24px;
  max-width: 960px;
  margin: auto;
  background-color: #fcfcff;
  color: #333;
}

/* 🏷️ 見出しスタイル */
h1, h2, h3 {
  margin-top: 24px;
  margin-bottom: 12px;
  text-align: center;
  color: #444;
}

h1 {
  font-size: 2rem;
  color: #5b3d92;
}

/* 📝 テキストエリア */
textarea {
  width: 100%;
  height: 280px;
  font-family: "Courier New", monospace;
  font-size: 1rem;
  margin-bottom: 16px;
  padding: 14px;
  border: 2px solid #ccd;
  border-radius: 12px;
  background-color: #fff;
  box-sizing: border-box;
  resize: vertical;
  transition: border-color 0.2s;
}

textarea:focus {
  border-color: #8a6bdc;
  outline: none;
}

/* 📦 入力フィールド */
.input-box {
  padding: 10px;
  font-size: 1rem;
  width: 100%;
  max-width: 480px;
  border: 2px solid #ccc;
  border-radius: 8px;
  box-sizing: border-box;
  background-color: #fff;
  margin-top: 4px;
}

/* ▶️ ボタン並び */
.button-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  margin-bottom: 24px;
}

/* 🎯 共通ボタンスタイル */
button,
.button-link {
  display: inline-block;
  padding: 10px 18px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  color: #fff;
  text-decoration: none;
  min-width: 140px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  transition: transform 0.1s ease, opacity 0.2s ease;
}

button:hover,
.button-link:hover {
  transform: scale(1.04);
  opacity: 0.92;
}

/* 🌈 ボタンカラー */
.blue    { background-color: #4da3d9; }
.red     { background-color: #e04f5f; }
.green   { background-color: #59c278; }
.purple  { background-color: #7e57c2; }
.gray    { background-color: #b0b0b0; }

/* 📄 出力欄 */
pre#output {
  background: #2b2b2b;
  color: #f1f1f1;
  border-radius: 8px;
  padding: 16px;
  min-height: 200px;
  white-space: pre-wrap;
  font-family: "Consolas", monospace;
  box-sizing: border-box;
  overflow-x: auto;
  border: 1px solid #444;
}

/* 🧭 リンクボタンの色継承 */
.button-link.blue    { background-color: #4da3d9; }
.button-link.red     { background-color: #e04f5f; }
.button-link.green   { background-color: #59c278; }
.button-link.purple  { background-color: #7e57c2; }

.quote {
  background-color: #f2f7ff;
  border-left: 6px solid #6a1b9a;
  padding: 12px 16px;
  margin: 20px auto;
  font-style: italic;
  font-size: 1.05rem;
  border-radius: 6px;
}

.attribution {
  display: block;
  margin-top: 8px;
  text-align: right;
  font-size: 0.95rem;
  color: #555;
}

.hint-box {
  background-color: #fff6da;
  border-left: 6px solid #ffc107;
  padding: 16px;
  margin: 20px 0;
  border-radius: 8px;
}

/* 📱 モバイル対応 */
@media (max-width: 600px) {
  h1 {
    font-size: 1.6rem;
  }

  .button-row {
    flex-direction: column;
    gap: 10px;
  }

  button,
  .button-link {
    font-size: 0.95rem;
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
  }

  textarea {
    height: 180px;
  }

  .input-box {
    max-width: 100%;
    font-size: 0.95rem;
  }
}