/* ===== 基本設定 ===== */
body {
  font-family: 'Arial', sans-serif;
  margin: 0;
  padding: 1em;
  background-color: #f9f9f9;
  color: #333;
  font-size: 18px;
}

/* ===== コンテナ ===== */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2em;
  background-color: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ===== 見出し ===== */
h1, h2 {
  text-align: center;
  margin-top: 0.5em;
  margin-bottom: 1em;
  font-size: 2em;
}

/* ===== フォームレイアウト ===== */
form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5em;
}

form label {
  font-weight: bold;
  margin-bottom: 0.3em;
  font-size: 1em;
  display: block;
}

form input,
form select,
form textarea {
  padding: 0.9em;
  border: 1px solid #bbb;
  border-radius: 6px;
  font-size: 1em;
  width: 100%;
  box-sizing: border-box;
}

textarea {
  resize: vertical;
  min-height: 6em;
}

/* ===== フル幅入力 ===== */
.form-full {
  grid-column: 1 / 3;
}

/* ===== ボタン ===== */
button {
  grid-column: 1 / 3;
  padding: 1em;
  background-color: #007bff;
  border: none;
  border-radius: 6px;
  color: white;
  font-size: 1.2em;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

button:hover {
  background-color: #0056b3;
}

/* ===== オーディオ ===== */
audio {
  display: block;
  margin: 1.5em auto;
  width: 100%;
}

#audioControls,
.audio-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 10px;
}

#audioControls button,
.audio-controls button {
  flex: 1;
  min-width: 50px;
  font-size: 24px;
  padding: 10px;
  border-radius: 8px;
  background-color: #007bff;
  color: white;
  border: none;
  transition: background-color 0.2s ease;
  cursor: pointer;
}

#audioControls button:hover,
.audio-controls button:hover {
  background-color: #0056b3;
}

#audioControls button.loop-on,
.audio-controls button.loop-on {
  background-color: #28a745; /* 緑色でONを示す */
}

/* ===== エラー／結果 ===== */
#error,
#result {
  margin-top: 1.2em;
  font-weight: bold;
  text-align: center;
}

#error {
  color: #d9534f;
}

#result {
  color: #28a745;
}

/* ===== ラベル横並び用 ===== */
.inline-group {
  display: flex;
  align-items: center;
  gap: 1em;
  grid-column: 1 / 3;
}

.inline-group label {
  margin: 0;
  white-space: nowrap;
}

/* ===== セレクトボックスの幅を調整（label直後に小さく配置） ===== */
.inline-group select.form-inline {
  width: 15em;
  max-width: 100%;
}

/* ===== messageエリアは全幅指定済。以下で確実に反映 ===== */
#generatedMessage {
  width: 100%;
}

/* ===== モバイル最適化 ===== */
@media (max-width: 768px) {
  form {
    display: flex;
    flex-direction: column;
  }

  .form-full {
    grid-column: auto;
  }

  h1, h2 {
    font-size: 1.6em;
  }

  input, select, textarea {
    font-size: 1em;
    padding: 1em;
  }

  button {
    width: 100%;
    font-size: 1.1em;
  }

  body {
    padding: 0.5em;
    font-size: 17px;
  }
}

/* グレーアウト用 */
select.disabled {
  background-color: #e9ecef;
  color: #6c757d;
  cursor: not-allowed;
}