/* ===================================================================
   客服 Widget 样式表
   配合 kefu.js 使用，通过 <link rel="stylesheet" href="/kefu.css"> 引入
   =================================================================== */

/* 完全禁用焦点虚线框 */
*:focus,*:focus-visible,*:active{outline:none!important;box-shadow:none!important;}
button,input,textarea,select,.kefu-send-btn,.kefu-button{-webkit-tap-highlight-color:transparent!important;-webkit-focus-ring-color:transparent!important;user-select:none!important;}

:root {
  --kefu-primary: #4f6ef7;
  --kefu-primary-hover: #3b5de7;
  --kefu-bg: #ffffff;
  --kefu-header-bg: #4f6ef7;
  --kefu-header-text: #ffffff;
  --kefu-text: #333333;
  --kefu-text-light: #999999;
  --kefu-border: #e8e8e8;
  --kefu-shadow: 0 4px 24px rgba(0,0,0,0.12);
  --kefu-radius: 12px;
  --kefu-msg-ai-bg: #f0f2ff;
  --kefu-msg-visitor-bg: #4f6ef7;
  --kefu-msg-visitor-text: #ffffff;
  --kefu-msg-system-bg: #f5f5f5;
  --kefu-msg-system-text: #999;
  --kefu-btn-size: 56px;
  --kefu-panel-width: 380px;
  --kefu-panel-height: 560px;
}

/* ====== 浮动按钮 ====== */
.kefu-button:focus, .kefu-button:focus-visible { outline: none !important; box-shadow: none !important; }
.kefu-button, .kefu-button:focus, .kefu-button:focus-visible, .kefu-button:active { outline: none !important; box-shadow: none !important; }
.kefu-button {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: var(--kefu-btn-size);
  height: var(--kefu-btn-size);
  border-radius: 50%;
  background: var(--kefu-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  z-index: 2147483000;
  box-shadow: 0 4px 16px rgba(79, 110, 247, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.kefu-button:hover { transform: scale(1.08); box-shadow: 0 6px 24px rgba(79,110,247,0.5); }
.kefu-button svg { width: 28px; height: 28px; fill: currentColor; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.kefu-button.kefu-active { transform: rotate(45deg); }

/* ====== 未读消息气泡 ====== */
.kefu-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  border-radius: 10px;
  background: #ff4757;
  color: #fff;
  font-size: 12px;
  line-height: 20px;
  text-align: center;
  padding: 0 5px;
  display: none;
}
.kefu-badge.kefu-show { display: block; }

/* ====== 聊天面板 ====== */
.kefu-panel {
  position: fixed;
  bottom: 90px;
  right: 24px;
  width: var(--kefu-panel-width);
  height: var(--kefu-panel-height);
  background: var(--kefu-bg);
  border-radius: var(--kefu-radius);
  box-shadow: var(--kefu-shadow);
  z-index: 2147482999;
  display: none;
  flex-direction: column;
  overflow: hidden;
  animation: kefu-slideUp 0.3s ease;
}
.kefu-panel.kefu-open { display: flex; }
.kefu-button.kefu-active { display: none !important; }
@keyframes kefu-slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ====== 头部 ====== */
.kefu-header {
  background: var(--kefu-header-bg);
  color: var(--kefu-header-text);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}
.kefu-header-left { display: flex; align-items: center; gap: 12px; }
.kefu-header-avatar { width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.2);display:flex;align-items:center;justify-content:center;font-size:20px; }
.kefu-header-info h3 { margin: 0; font-size: 15px; font-weight: 600; }
.kefu-header-info p { margin: 2px 0 0; font-size: 12px; opacity: 0.8; }
.kefu-header-actions { display: flex; gap: 8px; }
.kefu-header-actions button {
  background: none; border: none; color: #fff; cursor: pointer;
  padding: 4px; border-radius: 4px; opacity: 0.8; transition: opacity 0.2s;
  display: flex; align-items: center;
}
.kefu-header-actions button:hover { opacity: 1; }
.kefu-header-actions svg { width: 18px; height: 18px; fill: currentColor; }
.kefu-close-btn svg { width: 26px; height: 26px; color: #ff4757; }

/* ====== 模式切换 ====== */
.kefu-mode-switch {
  display: flex;
  padding: 8px 16px;
  gap: 8px;
  background: #f8f9ff;
  border-bottom: 1px solid var(--kefu-border);
  flex-shrink: 0;
}
.kefu-mode-btn {
  flex: 1;
  padding: 6px 12px;
  border: 1px solid var(--kefu-border);
  border-radius: 20px;
  background: #fff;
  color: var(--kefu-text);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
  text-align: center;
}
.kefu-mode-btn:hover { border-color: var(--kefu-primary); color: var(--kefu-primary); }
.kefu-mode-btn.kefu-active { background: var(--kefu-primary); color: #fff; border-color: var(--kefu-primary); }

/* ====== 消息区域 ====== */
.kefu-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #fafafa;
}
.kefu-messages::-webkit-scrollbar { width: 4px; }
.kefu-messages::-webkit-scrollbar-thumb { background: #ddd; border-radius: 2px; }

/* ====== 消息气泡 ====== */
.kefu-msg { display: flex; gap: 8px; max-width: 85%; animation: kefu-msgIn 0.25s ease; }
@keyframes kefu-msgIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:translateY(0)} }
.kefu-msg-avatar { width:32px;height:32px;border-radius:50%;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:14px; }
.kefu-msg-body { display: flex; flex-direction: column; gap: 4px; }
.kefu-msg-sender { font-size: 12px; color: var(--kefu-text-light); }
.kefu-msg-bubble { padding: 10px 14px; border-radius: 14px; font-size: 14px; line-height: 1.5; word-break: break-word; white-space: pre-wrap; }
.kefu-msg.kefu-msg-ai,
.kefu-msg.kefu-msg-system { align-self: flex-start; }
.kefu-msg.kefu-msg-ai .kefu-msg-avatar { background: #e4e7ff; color: var(--kefu-primary); order: 0; }
.kefu-msg.kefu-msg-ai .kefu-msg-bubble { background: var(--kefu-msg-ai-bg); color: var(--kefu-text); border-top-left-radius: 4px; }
.kefu-msg.kefu-msg-visitor { align-self: flex-end; flex-direction: row-reverse; }
.kefu-msg.kefu-msg-visitor .kefu-msg-avatar { background: var(--kefu-primary); color: #fff; }
.kefu-msg.kefu-msg-visitor .kefu-msg-body { align-items: flex-end; }
.kefu-msg.kefu-msg-visitor .kefu-msg-bubble { background: var(--kefu-msg-visitor-bg); color: var(--kefu-msg-visitor-text); border-top-right-radius: 4px; }
.kefu-msg.kefu-msg-system .kefu-msg-avatar { background: #eee; color: #999; font-size: 12px; }
.kefu-msg.kefu-msg-system .kefu-msg-bubble { background: var(--kefu-msg-system-bg); color: var(--kefu-msg-system-text); font-size: 12px; border-radius: 10px; }
.kefu-msg-time { font-size: 11px; color: #ccc; padding: 0 4px; }
.kefu-msg-read { font-size: 11px; color: #52c41a; padding: 0 4px; text-align: right; display: block; }

/* ====== 输入区域 ====== */
.kefu-input-area {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--kefu-border);
  background: #fff;
  flex-shrink: 0;
}
.kefu-input-area textarea {
  flex: 1; border: none; outline: none; resize: none; font-size: 14px;
  line-height: 1.4; max-height: 80px; padding: 6px 0; font-family: inherit; color: var(--kefu-text);
}
.kefu-input-area textarea::placeholder { color: #bbb; }
.kefu-send-btn:focus, .kefu-send-btn:focus-visible, .kefu-send-btn:active { outline: none !important; box-shadow: none !important; -webkit-tap-highlight-color: transparent !important; }
.kefu-send-btn {
  width: 36px; height: 36px; border-radius: 50%; background: var(--kefu-primary);
  color: #fff; border: none; outline: none; cursor: pointer;
  flex-shrink: 0; transition: background 0.2s; position: relative;
  user-select: none; -webkit-user-select: none; appearance: none; -webkit-appearance: none;
}
.kefu-send-btn::-moz-focus-inner { border: 0; }
.kefu-send-btn:hover { background: var(--kefu-primary-hover); }
.kefu-send-btn svg { width: 18px; height: 18px; fill: currentColor; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }

/* ====== 加载状态 ====== */
.kefu-loading { text-align: center; padding: 20px; color: var(--kefu-text-light); font-size: 13px; }

/* ====== 响应式：移动端 ====== */
@media (max-width: 480px) {
  .kefu-panel { right: 0; bottom: 0; width: 100%; height: 100%; border-radius: 0; }
  .kefu-button { bottom: 16px; right: 16px; }
}


/* 消息列表已到顶提示 */
.kefu-top-notice{text-align:center;padding:12px 0;color:#bbb;font-size:12px;user-select:none;}

/* 彻底移除所有按钮虚线框 */
.kefu-send-btn:focus, .kefu-send-btn:focus-visible, .kefu-send-btn:active,
.kefu-button:focus, .kefu-button:focus-visible, .kefu-button:active,
.kefu-header-actions button:focus, .kefu-header-actions button:focus-visible,
.kefu-mode-btn:focus, .kefu-mode-btn:focus-visible {
  outline: none !important;
  box-shadow: none !important;
  border-color: transparent !important;
}


/* ==================== FAQ 问答卡片 ==================== */
.kefu-faq-card {
  background: #fff;
  border-radius: 12px;
  padding: 14px 16px;
  margin: 12px 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  border: 1px solid #e8e8e8;
}
.kefu-faq-header {
  font-size: 14px;
  font-weight: 600;
  color: #333;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid #f0f0f0;
}
.kefu-faq-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.kefu-faq-item {
  background: #f6f8ff;
  border: 1px solid #e8eeff;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: #4f6ef7;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1.4;
}
.kefu-faq-item:hover {
  background: #eef2ff;
  border-color: #4f6ef7;
  transform: translateY(-1px);
}
.kefu-faq-item:active {
  transform: translateY(0);
}