.chat-umia-root {
  position: fixed;
  z-index: 999999;
  bottom: 20px;
  right: 20px;
  pointer-events: none;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}
.chat-umia--left { left: 20px; right: auto; }

.cu-btn {
  pointer-events: auto;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--cu-accent, #2563eb);
  color: #fff;
  border: none;
  border-radius: 9999px;
  padding: .75rem 1rem;
  box-shadow: 0 10px 25px rgba(0,0,0,.15);
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
}
.cu-btn:hover { transform: translateY(-1px); box-shadow: 0 14px 30px rgba(0,0,0,.2); }
.cu-btn svg { width: 18px; height: 18px; }

.cu-panel {
  pointer-events: auto;
  position: absolute;
  bottom: 70px;
  right: 0;
  width: min(360px, 92vw);
  max-height: 70vh;
  display: none;
  flex-direction: column;
  backdrop-filter: blur(14px);
  background: rgba(17, 24, 39, 0.66);
  color: #fff;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0,0,0,.35);
  border: 1px solid rgba(255,255,255,.08);
}
.chat-umia--left .cu-panel { right: auto; left: 0; }
.cu-panel.open { display: flex; animation: cu-slide .18s ease; }
@keyframes cu-slide { from { transform: translateY(10px); opacity: 0;} to { transform: translateY(0); opacity: 1;} }

.cu-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 1rem; background: rgba(255,255,255,.06);
}
.cu-title { font-weight: 600; font-size: 0.95rem; letter-spacing: .2px; }
.cu-close {
  background: transparent; border: none; color: #fff; opacity: .75; cursor: pointer;
  padding: .25rem; border-radius: .5rem;
}
.cu-close:hover { opacity: 1; background: rgba(255,255,255,.06); }

.cu-body {
  display: flex; flex-direction: column; gap: .75rem;
  padding: 1rem; overflow-y: auto;
}
.cu-msg {
  display: flex; gap: .5rem; align-items: flex-end;
}
.cu-msg .bubble {
  max-width: 80%;
  padding: .6rem .75rem;
  border-radius: .8rem;
  line-height: 1.35;
  font-size: .94rem;
  white-space: pre-wrap;
  word-break: break-word;
}
.cu-msg.user  .bubble { background: rgba(37, 99, 235, .2); border: 1px solid rgba(37,99,235,.35); }
.cu-msg.bot   .bubble { background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.1); }

.cu-foot {
  display: flex; gap: .5rem; padding: .85rem; background: rgba(255,255,255,.04);
  border-top: 1px solid rgba(255,255,255,.06);
}
.cu-input {
  flex: 1; padding: .7rem .85rem; border-radius: .8rem; border: 1px solid rgba(255,255,255,.12);
  background: rgba(17,17,17,.35); color: #fff;
  outline: none;
}
.cu-send {
  background: var(--cu-accent, #2563eb); color: #fff; border: none; border-radius: .7rem; padding: .65rem .9rem; cursor: pointer;
}
.cu-welcome { opacity: .85; font-size: .9rem; }
.cu-spinner { width: 18px; height: 18px; border-radius: 50%; border: 2px solid rgba(255,255,255,.25); border-top-color: #fff; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg);} }