#pcw-root{position:fixed;bottom:20px;right:20px;z-index:999999;font-family:'Segoe UI',Arial,sans-serif}
#pcw-bubble{width:60px;height:60px;border-radius:50%;background:#2563eb;box-shadow:0 6px 20px rgba(37,99,235,.4);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .2s}
#pcw-bubble:hover{transform:scale(1.08)}
#pcw-bubble svg{width:28px;height:28px;fill:#fff}
#pcw-greet{position:absolute;bottom:70px;right:0;background:#fff;padding:12px 16px;border-radius:14px 14px 4px 14px;box-shadow:0 6px 24px rgba(0,0,0,.15);width:220px;font-size:14px;color:#222;animation:pcw-pop .3s ease}
#pcw-greet b{color:#2563eb}
@keyframes pcw-pop{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
#pcw-window{display:none;position:absolute;bottom:76px;right:0;width:360px;max-width:92vw;height:520px;max-height:80vh;background:#fff;border-radius:16px;box-shadow:0 10px 40px rgba(0,0,0,.2);overflow:hidden;flex-direction:column}
#pcw-window.pcw-open{display:flex}
#pcw-window.pcw-minimized{height:60px}
#pcw-window.pcw-minimized #pcw-body{display:none}
#pcw-header{background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;padding:14px 16px;display:flex;align-items:center;justify-content:space-between}
#pcw-header .pcw-title{font-weight:600;font-size:15px}
#pcw-header .pcw-sub{font-size:11px;opacity:.85}
#pcw-header .pcw-actions{display:flex;gap:10px}
#pcw-header button{background:none;border:none;color:#fff;cursor:pointer;font-size:16px;opacity:.9;padding:2px}
#pcw-header button:hover{opacity:1}
#pcw-body{flex:1;display:flex;flex-direction:column;overflow:hidden}
#pcw-form{padding:18px;overflow-y:auto}
#pcw-form h4{margin:0 0 4px;font-size:15px;color:#111}
#pcw-form p{margin:0 0 14px;font-size:12.5px;color:#666}
#pcw-form label{display:block;font-size:12px;color:#333;margin:10px 0 4px;font-weight:600}
#pcw-form input,#pcw-form select{width:100%;padding:9px 10px;border:1px solid #ddd;border-radius:8px;font-size:13px;box-sizing:border-box}
#pcw-form button{margin-top:16px;width:100%;background:#2563eb;color:#fff;border:none;padding:11px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer}
#pcw-form button:hover{background:#1d4ed8}
#pcw-error{color:#c0392b;font-size:12px;margin-top:8px;min-height:14px}
#pcw-messages{flex:1;overflow-y:auto;padding:14px;background:#f7f8fa}
.pcw-msg{margin-bottom:10px;max-width:80%;font-size:13.5px;line-height:1.4;padding:9px 12px;border-radius:12px;word-wrap:break-word}
.pcw-msg.visitor{background:#2563eb;color:#fff;margin-left:auto;border-bottom-right-radius:3px}
.pcw-msg.bot,.pcw-msg.employee{background:#fff;color:#222;border:1px solid #eee;border-bottom-left-radius:3px}
.pcw-msg.system{background:transparent;color:#888;text-align:center;font-size:11.5px;margin:8px auto;max-width:100%}
.pcw-msg .pcw-sender{display:block;font-size:10.5px;opacity:.7;margin-bottom:2px;font-weight:600}
#pcw-inputbar{display:flex;border-top:1px solid #eee;padding:10px}
#pcw-inputbar input{flex:1;border:1px solid #ddd;border-radius:20px;padding:9px 14px;font-size:13px;outline:none}
#pcw-inputbar button{margin-left:8px;background:#2563eb;color:#fff;border:none;border-radius:50%;width:38px;height:38px;cursor:pointer}
#pcw-status{font-size:11px;color:#888;padding:4px 14px;background:#f7f8fa}
@media(max-width:480px){#pcw-window{width:94vw;right:3vw}}