.byk-widget-container *{box-sizing:border-box;margin:0;padding:0}.byk-widget-container{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;line-height:1.5;position:fixed;bottom:20px;right:20px;z-index:99999}.byk-bubble{width:56px;height:56px;border-radius:50%;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 12px #00000040;transition:transform .2s,box-shadow .2s}.byk-bubble:hover{transform:scale(1.05);box-shadow:0 6px 16px #0000004d}.byk-bubble:active{transform:scale(.95)}.byk-chat-window{position:absolute;bottom:70px;right:0;width:360px;height:500px;background:#fff;border-radius:12px;box-shadow:0 8px 32px #00000026;display:flex;flex-direction:column;overflow:hidden;animation:slideUp .3s ease-out}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.byk-header{padding:16px;color:#fff;display:flex;align-items:center;justify-content:space-between}.byk-header-content{display:flex;align-items:center;gap:12px}.byk-avatar{width:36px;height:36px;background:#fff3;border-radius:50%;display:flex;align-items:center;justify-content:center}.byk-title{font-weight:600;font-size:16px}.byk-close-btn{background:none;border:none;color:#fff;cursor:pointer;padding:4px;opacity:.8;transition:opacity .2s}.byk-close-btn:hover{opacity:1}.byk-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.byk-welcome{text-align:center;color:#666;padding:40px 20px}.byk-welcome p:first-child{font-size:18px;font-weight:600;color:#333;margin-bottom:8px}.byk-message{max-width:80%;display:flex;flex-direction:column;gap:4px}.byk-message-user{align-self:flex-end}.byk-message-bot,.byk-message-agent{align-self:flex-start}.byk-message-content{padding:10px 14px;border-radius:16px;word-wrap:break-word}.byk-message-user .byk-message-content{background:#003cff;color:#fff;border-bottom-right-radius:4px}.byk-message-bot .byk-message-content,.byk-message-agent .byk-message-content{background:#f0f2f5;color:#1a1a1a;border-bottom-left-radius:4px}.byk-message-time{font-size:11px;color:#999;padding:0 4px}.byk-message-user .byk-message-time{text-align:right}.byk-typing{display:flex;gap:4px;padding:12px 14px}.byk-typing span{width:8px;height:8px;background:#999;border-radius:50%;animation:typing 1.4s infinite both}.byk-typing span:nth-child(2){animation-delay:.2s}.byk-typing span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-4px);opacity:1}}.byk-input-area{padding:12px;border-top:1px solid #eee;display:flex;gap:8px}.byk-input{flex:1;padding:10px 14px;border:1px solid #ddd;border-radius:20px;outline:none;font-size:14px;transition:border-color .2s}.byk-input:focus{border-color:#003cff}.byk-input::placeholder{color:#999}.byk-send-btn{width:40px;height:40px;border:none;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;transition:opacity .2s,transform .2s}.byk-send-btn:disabled{cursor:not-allowed;opacity:.6}.byk-send-btn:not(:disabled):hover{transform:scale(1.05)}@media (max-width: 480px){.byk-widget-container{bottom:10px;right:10px}.byk-chat-window{width:calc(100vw - 20px);height:calc(100vh - 100px);max-height:600px}}