body {
  margin: 0;
  font-family: "Segoe UI", sans-serif;
  background: linear-gradient(to bottom, #cdefff, #f0f9ff);
}

.chat-launcher {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #0078d4;
  color: white;
  border: none;
  padding: 14px 20px;
  border-radius: 30px;
  font-size: 15px;
  cursor: pointer;
  box-shadow: 0 6px 12px rgba(0,0,0,0.15);
  z-index: 1000;
}

.chat-box {
  display: none;
  flex-direction: column;
  position: fixed;
  bottom: 80px;
  right: 20px;
  width: 360px;
  max-width: 90%;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  overflow: hidden;
  z-index: 999;
}

.chat-body {
  padding: 16px;
  font-size: 14px;
  color: #333;
  max-height: 500px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: linear-gradient(to bottom, #e0f7ff, #ffffff);
}

.message {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 16px;
  line-height: 1.5;
  display: inline-block;
}

.bot {
  align-self: flex-start;
  background-color: #ffffff;
  border: 1px solid #ddd;
  color: #333;
  position: relative;
  padding-left: 50px;
  background-image: url('tanaka-photo.png');
  background-size: 32px 32px;
  background-repeat: no-repeat;
  background-position: 10px center;
}

.user {
  align-self: flex-end;
  background-color: #dcf8c6;
  color: #000;
}

.category-button, .subcategory-button, .submit-button, .restart-button {
  display: inline-block;
  margin-top: 6px;
  padding: 10px;
  background-color: #0078d4;
  color: white;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  font-size: 14px;
}

.category-button:hover, .subcategory-button:hover, .submit-button:hover, .restart-button:hover {
  background-color: #005ea2;
}

input, textarea {
  width: 100%;
  margin-top: 6px;
  padding: 8px;
  font-size: 14px;
  border-radius: 6px;
  border: 1px solid #ccc;
  box-sizing: border-box;
}


textarea#message {
  height: 4em;
  resize: vertical;
}

textarea.form-input {
  height: 4em;
  resize: vertical;
  padding: 8px;
  border-radius: 6px;
  border: 1px solid #ccc;
  width: 100%;
  box-sizing: border-box;
}

/* 最終調整 */
textarea.form-input {
  height: 4em;
  resize: vertical;
  padding: 8px;
  border-radius: 8px;
  border: 1px solid #ccc;
  width: 100%;
  box-sizing: border-box;
  font-family: inherit;
  font-size: 1em;
  outline: none;
}

/* 最終完全統一スタイル */
textarea.form-input,
input.form-input {
  display: block;
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1em;
  font-family: inherit;
  box-sizing: border-box;
  line-height: 1.4;
  background-color: #fff;
}

textarea.form-input {
  height: auto;
  min-height: 4em;
  resize: none;
  overflow: hidden;
}