/* =========================================================
   FAQ Bot（静的サイト版）スタイル
   ---------------------------------------------------------
   ・すべてのスタイルを .fb-root の中に限定しているため、
     既存サイトのCSSと干渉しません。
   ・色は .fb-root の変数（--fb-main など）で変更できます。
     JS側の settings.mainColor を指定すると、--fb-main が上書きされます。
   ========================================================= */
.fb-root {
  --fb-main: #2E6FA7;
  --fb-ink: #1F2A36;
  --fb-soft: #F1F4F8;
  --fb-line: #D8DFE8;
  --fb-white: #FFFFFF;
  --fb-focus: #F0B429;
  --fb-radius: 16px;
  font-family: inherit;
  color: var(--fb-ink);
  line-height: 1.7;
}
.fb-root *,
.fb-root *::before,
.fb-root *::after { box-sizing: border-box; }

/* サイト側のボタン装飾をリセット */
.fb-root button {
  font: inherit;
  line-height: 1.5;
  letter-spacing: normal;
  text-transform: none;
  box-shadow: none;
  min-height: 0;
  width: auto;
  margin: 0;
  cursor: pointer;
}
.fb-root button:focus-visible {
  outline: 3px solid var(--fb-focus);
  outline-offset: 2px;
}

/* ---------- 開くボタン ---------- */
.fb-root .fb-launcher {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 9998;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 14px 20px;
  border: none;
  border-radius: 999px;
  background: var(--fb-main);
  color: var(--fb-white);
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .22);
}
.fb-root .fb-launcher[hidden] { display: none; }

/* ---------- チャット画面 ---------- */
.fb-root .fb-window {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 9999;
  width: min(380px, calc(100vw - 40px));
  height: min(580px, calc(100vh - 40px));
  display: none;
  flex-direction: column;
  background: var(--fb-white);
  border-radius: var(--fb-radius);
  overflow: hidden;
  box-shadow: 0 14px 44px rgba(0, 0, 0, .25);
}
.fb-root .fb-window.is-open { display: flex; }

.fb-root .fb-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--fb-main);
  color: var(--fb-white);
  font-weight: 700;
  font-size: 15px;
}
.fb-root .fb-close {
  flex: none;
  background: none;
  border: none;
  color: var(--fb-white);
  font-size: 22px;
  line-height: 1;
  padding: 4px 6px;
  border-radius: 6px;
}

/* ---------- 本文 ---------- */
.fb-root .fb-body {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;      /* 背面のページが一緒に動かないようにする */
  -webkit-overflow-scrolling: touch;
  padding: 16px;
  background: var(--fb-soft);
  scrollbar-width: thin;
  scrollbar-color: #B6C3D0 transparent;
}
.fb-root .fb-body::-webkit-scrollbar { width: 8px; }
.fb-root .fb-body::-webkit-scrollbar-thumb {
  background: #B6C3D0;
  border-radius: 4px;
}
.fb-root .fb-body::-webkit-scrollbar-track { background: transparent; }

/* ---------- 吹き出し ---------- */
.fb-root .fb-msg {
  max-width: 88%;
  margin: 0 0 12px;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 15px;
  overflow-wrap: anywhere;
}
.fb-root .fb-msg.is-bot {
  background: var(--fb-white);
  border-bottom-left-radius: 4px;
}
.fb-root .fb-msg.is-user {
  margin-left: auto;
  background: var(--fb-main);
  color: var(--fb-white);
  border-bottom-right-radius: 4px;
}
.fb-root .fb-msg.is-text { white-space: pre-line; }
.fb-root .fb-msg p { margin: 0 0 8px; }
.fb-root .fb-msg p:last-child { margin-bottom: 0; }
.fb-root .fb-msg ul,
.fb-root .fb-msg ol { margin: 4px 0 8px; padding-left: 1.3em; }
.fb-root .fb-msg a {
  color: var(--fb-main);
  font-weight: 700;
  text-decoration: underline;
}
.fb-root .fb-msg.is-user a { color: var(--fb-white); }
.fb-root .fb-msg img { max-width: 100%; height: auto; }

/* ---------- 選択肢 ---------- */
.fb-root .fb-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}
.fb-root .fb-options.is-list {
  flex-direction: column;
  align-items: stretch;
}
.fb-root .fb-chip {
  padding: 8px 14px;
  border: 2px solid var(--fb-main);
  border-radius: 999px;
  background: var(--fb-white);
  color: var(--fb-main);
  font-size: 14px;
  font-weight: 700;
  text-align: left;
}
.fb-root .fb-options.is-list .fb-chip { border-radius: 10px; }
.fb-root .fb-chip:hover {
  background: var(--fb-main);
  color: var(--fb-white);
}
.fb-root .fb-chip.is-sub {
  border-color: var(--fb-line);
  color: var(--fb-ink);
  font-weight: 400;
}
.fb-root .fb-chip.is-sub:hover {
  background: var(--fb-line);
  color: var(--fb-ink);
}

/* ---------- 入力中の表示 ---------- */
.fb-root .fb-typing {
  display: inline-flex;
  gap: 4px;
  padding: 12px 14px;
  background: var(--fb-white);
  border-radius: 14px;
  margin-bottom: 12px;
}
.fb-root .fb-typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #9AA9B8;
  animation: fb-blink 1s infinite;
}
.fb-root .fb-typing span:nth-child(2) { animation-delay: .2s; }
.fb-root .fb-typing span:nth-child(3) { animation-delay: .4s; }
@keyframes fb-blink {
  0%, 100% { opacity: .3; }
  50%      { opacity: 1; }
}

/* ---------- スマホ ---------- */
@media (max-width: 600px) {
  .fb-root .fb-window {
    right: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    height: 100dvh;                  /* アドレスバーを除いた実際の高さ */
    border-radius: 0;
  }
  .fb-root .fb-launcher {
    right: 16px;
    bottom: 16px;
    padding: 12px 18px;
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fb-root .fb-typing span { animation: none; }
}