/* ═══════════════════════════════════════════════════
   LINE CTA + FAB — 整站浮動 LINE 按鈕 + 區塊 CTA
   前衛東方官網 V2
   ═══════════════════════════════════════════════════ */

/* ══════════════════════════════════════════
   LINE 浮動按鈕（整站右下）
══════════════════════════════════════════ */
.line-fab {
  position: fixed;
  right: 32px;
  bottom: 32px;
  z-index: 950;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 999px;
  width: 60px;
  height: 60px;
  padding: 0;
  box-shadow: 0 10px 28px rgba(28, 27, 24, 0.25),
              0 4px 10px rgba(154, 132, 86, 0.3);
  overflow: hidden;
  transition:
    width var(--duration-normal) var(--ease-out),
    padding var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal) var(--ease-out),
    background var(--duration-normal) var(--ease-out);
}

.line-fab:hover {
  background: var(--accent-light);
  box-shadow: 0 14px 36px rgba(28, 27, 24, 0.3),
              0 6px 14px rgba(154, 132, 86, 0.38);
}

.line-fab-icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.line-fab-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.line-fab-label {
  font-family: 'Noto Sans TC', sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.2em;
  margin-left: 0;
  max-width: 0;
  opacity: 0;
  overflow: hidden;
  white-space: nowrap;
  transition:
    max-width var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal) var(--ease-out),
    margin var(--duration-normal) var(--ease-out);
}

@media (min-width: 769px) {
  .line-fab:hover {
    width: 168px;
    padding: 0 20px 0 18px;
  }

  .line-fab:hover .line-fab-label {
    max-width: 120px;
    opacity: 1;
    margin-left: 10px;
  }
}

/* 捲動隱藏態 */
.line-fab.hidden {
  transform: translateY(120px);
  opacity: 0;
  pointer-events: none;
}

/* 手機：固定小圓形 */
@media (max-width: 768px) {
  .line-fab {
    right: 16px;
    bottom: 24px;
    width: 48px;
    height: 48px;
    box-shadow: 0 8px 20px rgba(28, 27, 24, 0.25);
  }

  .line-fab-icon {
    width: 22px;
    height: 22px;
  }

  .line-fab-label {
    display: none;
  }
}