#atsp-chatbox{position:fixed;bottom:20px;right:20px;width:525px;max-height:1240px;background:#fff;border-radius:12px;box-shadow:0 4px 18px rgba(0,0,0,.2);display:flex;flex-direction:column;font-family:Arial,sans-serif;overflow:hidden;z-index:9999;}
@media(max-width:600px){#atsp-chatbox{width:95vw;max-height:90vh;right:2.5vw;}}
#atsp-header{display:flex;align-items:center;padding:12px;background:#4a6cf7;color:#fff;gap:14px;}
#atsp-avatar{width:56px;height:56px;border-radius:50%;object-fit:cover;}
#atsp-avatar-col{display:flex;flex-direction:column;align-items:center;}
#atsp-name{font-size:13px;margin-top:4px;}
#atsp-messages{flex:1;padding:12px;overflow-y:auto;background:#f7f9fc;}
.msg{margin-bottom:10px;padding:8px;border-radius:8px;}
.msg.user{background:#e1ecff;align-self:flex-end;}
.msg.assistant{background:#fff;border:1px solid #dfe3e8;}
#atsp-input-row{display:flex;gap:8px;padding:10px;background:#fff;}
#atsp-user-input{flex:1;padding:8px;border:1px solid #ccc;border-radius:6px;}
#atsp-submit-btn{padding:8px 16px;background:#4a6cf7;color:#fff;border:none;border-radius:6px;cursor:pointer;}
.atsp-file-btn{background:#e1ecff;padding:8px;border-radius:6px;font-size:12px;cursor:pointer;white-space:nowrap;}
#atsp-footer{font-size:11px;text-align:center;padding:6px;background:#f0f2f5;color:#666;}


/* Center and style header lines */
#atsp-header {
  text-align: center;
  margin-bottom: 10px;
}

#atsp-title {
  font-size: 22px;
  font-weight: bold;
}

#atsp-subtitle {
  font-size: 17px;
  margin-top: 4px;
}

/* Center the file upload field under the form */
#atsp-form input[type="file"] {
  display: block;
  margin: 12px auto 0 auto;
  text-align: center;
}