.aicb-widget { position: fixed; right: 16px; bottom: 16px; z-index: 99999; font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; }
.aicb-fab { width: 52px; height: 52px; border-radius: 999px; border: 0; cursor: pointer; box-shadow: 0 10px 24px rgba(0,0,0,.2); font-size: 20px; }
.aicb-panel { width: 340px; height: 420px; background: #fff; border-radius: 14px; box-shadow: 0 18px 50px rgba(0,0,0,.25); overflow: hidden; display: none; margin-bottom: 10px; }
.aicb-panel.open { display: flex; flex-direction: column; }
.aicb-header { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; border-bottom: 1px solid #eee; }
.aicb-title { font-weight: 600; font-size: 14px; }
.aicb-close { border: 0; background: transparent; cursor: pointer; font-size: 18px; }
.aicb-body { padding: 10px; overflow: auto; flex: 1; background: #fafafa; }
.aicb-msg { display: flex; margin: 8px 0; }
.aicb-user { justify-content: flex-end; }
.aicb-bot { justify-content: flex-start; }
.aicb-bubble { max-width: 78%; padding: 10px 12px; border-radius: 12px; font-size: 13px; line-height: 1.3; background: #fff; border: 1px solid #eee; }
.aicb-user .aicb-bubble { background: #e9f2ff; border-color: #d7e8ff; }
.aicb-form { display: flex; gap: 8px; padding: 10px; border-top: 1px solid #eee; background: #fff; }
.aicb-input { flex: 1; padding: 10px; border-radius: 10px; border: 1px solid #ddd; outline: none; }
.aicb-send { padding: 10px 12px; border-radius: 10px; border: 0; cursor: pointer; background: #111; color: #fff; }