/* ============================================================
   门户智能客服浮窗（fragments.html footer 引入，chat.js 配套）
   主题变量沿用 common.css 的 --primary / --navy 体系
   ============================================================ */

/* 悬浮按钮（右下角；to-top 在其上方，见 common.css 的 bottom:100px） */
/* 悬浮按钮：图标 + 「在线咨询」文字胶囊，更易被注意到 */
.chat-fab{
  position:fixed;right:24px;bottom:24px;z-index:1200;
  height:52px;padding:0 20px 0 16px;gap:8px;border:none;border-radius:26px;cursor:pointer;
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;letter-spacing:.02em;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px rgba(27,75,143,.35);
  transition:transform .2s ease,background .2s ease;
}
.chat-fab:hover{background:var(--primary-dark);transform:translateY(-3px)}
.chat-fab.hidden{display:none}
.chat-fab svg{pointer-events:none}
.chat-fab .fab-label{white-space:nowrap}
/* 跳动动画：按钮轻快地上下弹两下再休息，吸引视线 */
@keyframes fabBounce{
  0%,54%,100%{transform:translateY(0)}
  6%{transform:translateY(-9px)}
  18%{transform:translateY(0)}
  30%{transform:translateY(-5px)}
  42%{transform:translateY(0)}
}
.chat-fab:not(.hidden){animation:fabBounce 5s ease-in-out infinite}
.chat-fab:hover{animation-play-state:paused}

/* 欢迎引导气泡：进页数秒后出现，点击或打开面板即收起，当天不再弹 */
.chat-fab-tip{
  position:fixed;right:150px;bottom:32px;z-index:1200;max-width:230px;
  background:#fff;border:1px solid var(--line);border-radius:12px;
  padding:10px 14px;font-size:13.5px;line-height:1.6;color:var(--ink);
  box-shadow:var(--shadow-lg);cursor:pointer;
}
.chat-fab-tip b{color:var(--primary)}
.chat-fab-tip::after{ /* 指向按钮的小箭头 */
  content:"";position:absolute;right:-6px;bottom:16px;width:10px;height:10px;
  background:#fff;border-right:1px solid var(--line);border-top:1px solid var(--line);
  transform:rotate(45deg);
}
.chat-fab-tip[hidden]{display:none}
.chat-fab-tip.show{animation:tipIn .28s ease}
@keyframes tipIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* 聊天面板 */
.chat-panel{
  position:fixed;right:24px;bottom:96px;z-index:1200;
  width:360px;max-width:calc(100vw - 32px);height:480px;max-height:calc(100vh - 130px);
  display:none;flex-direction:column;overflow:hidden;
  background:var(--bg);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);border:1px solid var(--line);
}
.chat-panel.open{display:flex;animation:chatIn .22s ease}
@keyframes chatIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* 头部 */
.chat-head{
  padding:14px 16px;background:var(--navy);color:#fff;
  display:flex;align-items:center;gap:10px;flex:0 0 auto;
}
.chat-head-avatar{
  width:34px;height:34px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary-light),var(--primary));
  display:flex;align-items:center;justify-content:center;
}
.chat-head-title{flex:1;min-width:0}
.chat-head-title b{display:block;font-size:14px}
.chat-head-title span{display:block;font-size:12px;color:#9db4d0}
.chat-close{background:none;border:none;color:#9db4d0;cursor:pointer;padding:4px;border-radius:6px}
.chat-close:hover{color:#fff;background:rgba(255,255,255,.1)}

/* 消息区 */
.chat-body{flex:1;overflow-y:auto;padding:14px;background:var(--bg-soft)}
.chat-body::-webkit-scrollbar{width:5px}
.chat-body::-webkit-scrollbar-thumb{background:#c6d2e2;border-radius:3px}

.chat-row{display:flex;margin-bottom:12px}
.chat-row.u{justify-content:flex-end}
.chat-bubble{
  max-width:82%;padding:9px 13px;font-size:14px;line-height:1.65;
  border-radius:12px;word-break:break-word;white-space:pre-wrap;
}
.chat-row.a .chat-bubble{background:#fff;color:var(--ink);border:1px solid var(--line);border-top-left-radius:4px}
.chat-row.u .chat-bubble{background:var(--primary);color:#fff;border-top-right-radius:4px}
.chat-bubble.err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}

/* 打字中指示 */
.chat-typing{display:inline-flex;gap:4px;padding:4px 2px}
.chat-typing i{width:6px;height:6px;border-radius:50%;background:#9db4d0;animation:chatBlink 1.2s infinite}
.chat-typing i:nth-child(2){animation-delay:.2s}
.chat-typing i:nth-child(3){animation-delay:.4s}
@keyframes chatBlink{0%,80%,100%{opacity:.3}40%{opacity:1}}

/* 欢迎语与快捷问题 */
.chat-welcome{font-size:13px;color:var(--muted);text-align:center;margin:4px 0 10px}
.chat-quick{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:8px}
.chat-quick button{
  border:1px solid var(--primary);color:var(--primary);background:#fff;
  border-radius:999px;padding:5px 12px;font-size:12.5px;cursor:pointer;transition:.15s;
}
.chat-quick button:hover{background:var(--bg-tint)}

/* 输入区 */
.chat-foot{flex:0 0 auto;padding:10px 12px;border-top:1px solid var(--line);background:var(--bg)}
.chat-input-row{display:flex;gap:8px}
.chat-input-row textarea{
  flex:1;resize:none;height:44px;max-height:88px;padding:11px 12px;
  border:1px solid var(--line);border-radius:10px;font-size:14px;
  font-family:inherit;line-height:1.5;outline:none;background:var(--bg-soft);
}
.chat-input-row textarea:focus{border-color:var(--primary);background:#fff}
.chat-send{
  flex:0 0 auto;width:44px;height:44px;border:none;border-radius:10px;cursor:pointer;
  background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;
  transition:background .15s;
}
.chat-send:hover{background:var(--primary-dark)}
.chat-send:disabled{background:#a8b8cf;cursor:not-allowed}
.chat-foot-tip{font-size:11px;color:var(--muted);margin-top:6px;text-align:center}
.chat-foot-tip a{color:var(--primary);text-decoration:none}

/* 移动端适配 */
@media (max-width:640px){
  .chat-fab{right:16px;bottom:16px;height:48px;padding:0 16px 0 13px;font-size:14px}.chat-fab-tip{right:120px;bottom:28px;max-width:200px}
  .chat-panel{right:8px;left:8px;bottom:78px;width:auto;height:70vh}
}

/* 减少动态效果偏好（呼吸光环按需求保持常显，不在此关闭） */
@media (prefers-reduced-motion:reduce){
  .chat-panel.open{animation:none}
  .chat-typing i{animation:none;opacity:.6}
  .chat-fab-tip.show{animation:none}
}