:root{--plc-primary:#2c5180;--plc-bg:#ffffff;--plc-gray:#f3f4f6;--plc-dark:#1f2937;}
.plc-chatbot{position:fixed;right:20px;bottom:20px;z-index:999999; font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial;}
.plc-robot-btn{background:var(--plc-primary);border:none;border-radius:9999px;width:64px;height:64px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 20px rgba(0,0,0,.2);cursor:pointer;transition:transform .2s ease}
.plc-robot-btn:hover{transform:translateY(-2px)}
.plc-robot-svg{width:36px;height:36px;fill:#fff}
.plc-chatbox{position:fixed;right:20px;bottom:96px;width:360px;max-width:90vw;height:560px;max-height:70vh;background:var(--plc-bg);border-radius:16px;box-shadow:0 20px 40px rgba(0,0,0,.22);overflow:hidden;display:none}
.plc-chatbox.plc-open{display:block}
.plc-chat-header{background:var(--plc-primary);color:#fff;padding:10px 14px;display:flex;align-items:center;justify-content:space-between}
.plc-minimize{background:rgba(255,255,255,.15);color:#fff;border:none;border-radius:8px;width:28px;height:28px;cursor:pointer}
.plc-chat-body{display:flex;flex-direction:column;height:calc(100% - 48px);}
.plc-messages{flex:1;overflow:auto;padding:10px 12px;background:#fff}
.plc-input{display:flex;gap:8px;padding:10px;background:var(--plc-gray);border-top:1px solid #e5e7eb}
.plc-input .plc-text{flex:1;border:1px solid #e5e7eb;border-radius:10px;padding:10px 12px;outline:none}
.plc-input .plc-send{background:var(--plc-primary);color:#fff;border:none;border-radius:10px;padding:10px 14px;cursor:pointer}
.plc-msg{display:flex;margin:8px 0}
.plc-msg .plc-bubble{max-width:80%;padding:10px 12px;border-radius:12px;line-height:1.3;word-wrap:break-word}
.plc-user{justify-content:flex-end}
.plc-user .plc-bubble{background:#e5efff;color:#0b1830}
.plc-bot .plc-bubble{background:#f7f7f7;color:#111827}
.plc-faq-wrap{border-top:1px solid #e5e7eb;background:#fff;padding:8px 10px}
.plc-faq-title{font-size:12px;color:#6b7280;margin-bottom:6px}
.plc-faq-list{display:flex;flex-wrap:wrap;gap:6px;max-height:30%;overflow:auto}
.plc-faq-item{background:#f0f2f7;border:1px solid #e5e7eb;border-radius:9999px;padding:6px 10px;font-size:13px;cursor:pointer}
.plc-callback{margin-top:8px;background:var(--plc-primary);color:#fff;border:none;border-radius:8px;padding:8px 10px;cursor:pointer;width:100%}
.plc-callback-form{position:absolute;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center}
.plc-callback-inner{background:#fff;border-radius:14px;padding:16px;min-width:280px;max-width:90%}
.plc-callback-inner h4{margin:0 0 10px 0}
.plc-callback-inner label{display:block;font-size:14px;margin-bottom:8px}
.plc-callback-inner input{width:100%;border:1px solid #e5e7eb;border-radius:8px;padding:8px 10px;margin-top:4px}
.plc-callback-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:10px}
.plc-cb-submit,.plc-cb-cancel{border:none;border-radius:8px;padding:8px 12px;cursor:pointer}
.plc-cb-submit{background:var(--plc-primary);color:#fff}
.plc-cb-cancel{background:#e5e7eb}
/* Mobile: chatbox 40% of screen */
@media (max-width: 768px){
  .plc-chatbox{width:60vw;height:60vh;right:10px;bottom:80px}
  .plc-robot-btn{width:56px;height:56px}
}