#wmd-chat-toggle{position:fixed;right:20px;bottom:20px;z-index:9999;border:0;border-radius:30px;padding:14px 20px;background:#2563eb;color:white;font:600 15px Arial,sans-serif;cursor:pointer;box-shadow:0 4px 18px #0003}
#wmd-chat-panel{position:fixed;right:20px;bottom:78px;width:min(380px,calc(100vw - 32px));height:min(520px,calc(100vh - 110px));background:white;border:1px solid #ddd;z-index:9999;border-radius:14px;box-shadow:0 8px 36px #0003;display:flex;flex-direction:column;overflow:hidden;font:14px Arial,sans-serif;color:#111}
#wmd-chat-panel[hidden]{display:none}
#wmd-chat-heading{padding:14px 16px;background:#2563eb;color:white;font-weight:bold}
#wmd-chat-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.wmd-msg{padding:10px 12px;border-radius:10px;max-width:91%;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.45}
.wmd-user{align-self:end;background:#dbeafe}
.wmd-assistant{align-self:start;background:#f3f4f6}
.wmd-sources{display:flex;flex-direction:column;gap:4px;margin-top:6px;font-size:12px}
.wmd-sources a{color:#1d4ed8;text-decoration:underline;overflow-wrap:anywhere}
#wmd-chat-form{display:flex;gap:8px;padding:10px;border-top:1px solid #ddd}
#wmd-chat-input{flex:1;min-width:0;border:1px solid #ccc;border-radius:8px;padding:10px;font:14px Arial,sans-serif}
#wmd-chat-send{border:0;border-radius:8px;background:#2563eb;color:#fff;padding:10px 14px;cursor:pointer}
#wmd-chat-send:disabled{opacity:.5;cursor:not-allowed}