*{box-sizing:border-box}
html,body{margin:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:#edf2f8;color:#172033}
button,input,textarea{font:inherit}
.customer-chat-body{min-height:100vh;min-height:100svh;overflow:hidden}
.customer-chat-shell{width:min(100%,560px);height:100vh;height:100svh;margin:0 auto;background:#f3f6fa;display:grid;grid-template-rows:auto auto 1fr auto;overflow:hidden;box-shadow:0 0 40px rgba(15,23,42,.08)}
.customer-chat-header{display:grid;grid-template-columns:38px 46px 1fr;gap:10px;align-items:center;padding:calc(env(safe-area-inset-top) + 10px) 14px 10px;background:#fff;border-bottom:1px solid #e8edf4;z-index:2}
.customer-chat-back{display:flex;align-items:center;justify-content:flex-start;height:38px;color:#111827;text-decoration:none;font-size:38px;line-height:1}
.customer-chat-avatar{width:46px;height:46px;border-radius:14px;object-fit:cover;background:#dbeafe}
.customer-chat-profile{min-width:0}
.customer-chat-profile h1{margin:0;font-size:17px;line-height:1.35;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.customer-chat-profile p{margin:3px 0 0;font-size:12px;color:#64748b;display:flex;align-items:center;gap:6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.customer-chat-online-dot{width:7px;height:7px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 3px rgba(34,197,94,.12);flex:0 0 auto}
.customer-chat-order{padding:7px 14px;background:#fff7ed;color:#9a3412;font-size:12px;text-align:center;border-bottom:1px solid #ffedd5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.customer-chat-messages{min-height:0;overflow-y:auto;padding:16px 13px 20px;-webkit-overflow-scrolling:touch;scroll-behavior:smooth}
.customer-chat-loading,.customer-chat-empty{text-align:center;color:#94a3b8;font-size:13px;padding:30px 0}
.customer-message{display:flex;align-items:flex-start;gap:8px;margin:0 0 14px}
.customer-message.is-user{flex-direction:row-reverse}
.customer-message-avatar{width:34px;height:34px;border-radius:10px;object-fit:cover;flex:0 0 auto;background:#dbeafe}
.customer-message-user-avatar{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;flex:0 0 auto;background:#e2e8f0;color:#64748b;font-size:13px;font-weight:700}
.customer-message-main{max-width:76%;min-width:0}
.customer-message-time{font-size:10px;color:#94a3b8;margin:0 0 4px 3px}
.customer-message.is-user .customer-message-time{text-align:right;margin:0 3px 4px 0}
.customer-message-bubble{display:inline-block;padding:10px 12px;border-radius:5px 15px 15px 15px;background:#fff;color:#273244;font-size:15px;line-height:1.55;word-break:break-word;white-space:pre-wrap;box-shadow:0 3px 12px rgba(15,23,42,.05)}
.customer-message.is-user .customer-message-bubble{float:right;border-radius:15px 5px 15px 15px;background:#2f7cf6;color:#fff}
.customer-message-image{display:block;max-width:min(62vw,260px);max-height:320px;border-radius:14px;object-fit:cover;cursor:zoom-in;background:#fff;box-shadow:0 3px 12px rgba(15,23,42,.08)}
.customer-chat-composer{display:grid;grid-template-columns:42px minmax(0,1fr) 58px;align-items:end;gap:8px;padding:9px 10px calc(9px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid #e5eaf1;z-index:3}
.customer-chat-image-button{width:42px;height:42px;border-radius:13px;background:#eef4ff;color:#2563eb;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:25px;font-weight:400}
.customer-chat-image-button input{display:none}
.customer-chat-input-wrap{min-height:42px;padding:8px 11px;border-radius:14px;background:#f3f5f8;border:1px solid transparent}
.customer-chat-input-wrap:focus-within{border-color:#a8c7ff;background:#fff}
.customer-chat-input-wrap textarea{display:block;width:100%;max-height:96px;resize:none;border:0;outline:0;background:transparent;color:#1f2937;font-size:14px;line-height:1.5;padding:2px 0}
.customer-chat-file-name{display:none;margin-top:4px;color:#2563eb;font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.customer-chat-file-name.is-visible{display:block}
.customer-chat-send{height:42px;border:0;border-radius:13px;background:#2563eb;color:#fff;font-size:14px;font-weight:700;cursor:pointer}
.customer-chat-send:disabled{opacity:.55;cursor:wait}
.customer-chat-toast{position:fixed;left:50%;bottom:100px;z-index:100;transform:translate(-50%,10px);max-width:80vw;padding:10px 14px;border-radius:999px;background:rgba(15,23,42,.9);color:#fff;font-size:13px;opacity:0;pointer-events:none;transition:.2s}
.customer-chat-toast.is-show{opacity:1;transform:translate(-50%,0)}
.customer-chat-image-viewer{position:fixed;inset:0;z-index:200;background:rgba(0,0,0,.86);display:flex;align-items:center;justify-content:center;padding:24px}
.customer-chat-image-viewer[hidden]{display:none}
.customer-chat-image-viewer img{max-width:100%;max-height:88vh;object-fit:contain}
.customer-chat-image-viewer button{position:absolute;right:16px;top:calc(env(safe-area-inset-top) + 12px);width:42px;height:42px;border:0;border-radius:50%;background:rgba(255,255,255,.16);color:#fff;font-size:30px;line-height:1}
@media(max-width:380px){
  .customer-chat-header{grid-template-columns:34px 42px 1fr;padding-left:10px;padding-right:10px}
  .customer-chat-avatar{width:42px;height:42px}
  .customer-message-main{max-width:80%}
  .customer-chat-composer{grid-template-columns:38px minmax(0,1fr) 54px;gap:6px;padding-left:8px;padding-right:8px}
  .customer-chat-image-button{width:38px;height:40px}
  .customer-chat-send{height:40px}
}
.customer-message-user-avatar.is-image{display:block;object-fit:cover;background:#e2e8f0}

/* 修复 iPhone Safari 聊天区灰白分段：整块消息区统一背景并锁定可视窗口 */
html,
body.customer-chat-body{width:100%;height:100%;min-height:100%;background:#f3f6fa!important;overflow:hidden!important}
.customer-chat-shell{
  position:fixed!important;
  inset:0!important;
  width:min(100%,560px)!important;
  height:auto!important;
  min-height:0!important;
  margin:0 auto!important;
  display:flex!important;
  flex-direction:column!important;
  background:#f3f6fa!important;
  overflow:hidden!important;
}
.customer-chat-header,
.customer-chat-order,
.customer-chat-composer{flex:0 0 auto}
.customer-chat-messages{
  flex:1 1 auto!important;
  width:100%;
  min-height:0!important;
  height:auto!important;
  background:#f3f6fa!important;
  overflow-y:auto!important;
  overscroll-behavior:contain;
}
.customer-chat-composer{
  width:100%;
  margin:0;
  background:#fff!important;
}
@supports(height:100dvh){
  .customer-chat-shell{height:100dvh!important;max-height:100dvh!important}
}