/* --- Global --- */
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow: hidden; /* 背景がはみ出ないように */
}

/* フォントの404エラーを防ぐため、システムフォントのみを使用 */
* {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif !important;
}

/* Gradio内部のフォント参照を上書き */
@font-face {
  font-family: 'ui-sans-serif';
  src: local('system-ui'), local('-apple-system'), local('BlinkMacSystemFont');
  font-weight: normal;
}

@font-face {
  font-family: 'ui-sans-serif';
  src: local('system-ui'), local('-apple-system'), local('BlinkMacSystemFont');
  font-weight: bold;
}

@font-face {
  font-family: 'system-ui';
  src: local('system-ui'), local('-apple-system'), local('BlinkMacSystemFont');
  font-weight: normal;
}

@font-face {
  font-family: 'system-ui';
  src: local('system-ui'), local('-apple-system'), local('BlinkMacSystemFont');
  font-weight: bold;
}

/* --- Layout --- */
.gradio-container {
  max-width: 1000px !important;
  margin: 0 auto !important;
  background-color: transparent !important;
  padding: 1rem !important;
}

/* --- Background --- */
.background-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background-size: cover;
  background-position: center;
  filter: blur(2px) brightness(0.9);
  opacity: 0.5;
  transition: background-image 0.5s ease-in-out;
}

/* --- Components --- */
.header, .footer {
  text-align: center;
  color: #333;
  padding: 0.5rem;
}
.footer a {
  color: #555;
  text-decoration: none;
}
.footer a:hover {
  text-decoration: underline;
}

.chatbot {
  background-color: rgba(255, 255, 255, 0.75) !important;
  border-radius: 12px !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1) !important;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  border: none !important;
}

/* チャットメッセージのスタイル */
.chatbot > .message-wrap {
    border-radius: 8px !important;
    padding: 10px !important;
    margin: 8px !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05) !important;
}