.chat-toggle{position:fixed;right:20px;bottom:20px;width:58px;height:58px;border-radius:50%;border:none;background:#198754;color:#fff;font-size:26px;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.25);z-index:9999}.chat-badge{position:absolute;top:-4px;right:-4px;background:#dc3545;color:#fff;border-radius:50%;min-width:20px;height:20px;font-size:12px;display:none;align-items:center;justify-content:center}.chat-popup{position:fixed;right:20px;bottom:90px;width:360px;max-width:calc(100vw - 40px);height:480px;max-height:calc(100vh - 120px);background:#fff;border-radius:14px;box-shadow:0 6px 24px rgba(0,0,0,.25);display:flex;flex-direction:column;overflow:hidden;z-index:9999}.chat-popup.hidden{display:none}.chat-header{padding:14px;background:#198754;color:#fff;display:flex;justify-content:space-between;align-items:center}.chat-header small{display:block;opacity:.9;margin-top:2px}.chat-header button{background:transparent;border:none;color:#fff;font-size:26px;cursor:pointer}.chat-messages{flex:1;padding:14px;overflow-y:auto;background:#f7f7f7}.message{max-width:80%;padding:10px 12px;border-radius:12px;margin-bottom:10px;font-size:14px;line-height:1.4}.message-store{background:#fff;color:#333;border:1px solid #ddd}.message-client{background:#198754;color:#fff;margin-left:auto}.chat-form{display:flex;gap:8px;padding:12px;border-top:1px solid #ddd;background:#fff}.chat-form input{flex:1;border:1px solid #ccc;border-radius:20px;padding:10px 14px;outline:none}.chat-form button{width:44px;height:44px;border-radius:50%;border:none;background:#198754;color:#fff;cursor:pointer}