#chathexo-toggle {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 10000;
  border: 0;
  border-radius: 999px;
  padding: 13px 18px;
  color: #fff;
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.32);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
}

#chathexo-panel {
  position: fixed;
  right: 24px;
  bottom: 82px;
  width: min(420px, calc(100vw - 24px));
  height: min(72vh, 700px);
  display: none;
  flex-direction: column;
  z-index: 10000;
  background: rgba(17, 24, 39, 0.94);
  color: #e5eefb;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 18px;
  box-shadow: 0 20px 56px rgba(15, 23, 42, 0.42);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

#chathexo-panel.open { display: flex; }

.chathexo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.chathexo-title { font-weight: 800; font-size: 15px; }
.chathexo-subtitle { color: #94a3b8; font-size: 12px; margin-top: 2px; }
.chathexo-close {
  border: 0; background: transparent; color: #e5eefb; cursor: pointer; font-size: 18px;
}

#chathexo-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chathexo-msg {
  max-width: 88%;
  padding: 12px 14px;
  border-radius: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}
.chathexo-msg.user { align-self: flex-end; background: #2563eb; color: white; }
.chathexo-msg.bot { align-self: flex-start; background: rgba(30, 41, 59, 0.95); }
.chathexo-msg .meta { display: block; margin-top: 8px; color: #94a3b8; font-size: 12px; }

.chathexo-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 14px 12px;
}

.chathexo-chip {
  border: 1px solid rgba(148, 163, 184, 0.18);
  color: #e5eefb;
  background: rgba(51, 65, 85, 0.65);
  border-radius: 999px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 12px;
}

.chathexo-form {
  border-top: 1px solid rgba(148, 163, 184, 0.18);
  padding: 12px;
}

.chathexo-form textarea {
  width: 100%;
  min-height: 86px;
  resize: vertical;
  box-sizing: border-box;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(15, 23, 42, 0.82);
  color: #e5eefb;
  padding: 12px;
  outline: none;
}

.chathexo-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  gap: 10px;
}

.chathexo-hint { color: #94a3b8; font-size: 12px; }
.chathexo-send {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  background: linear-gradient(135deg, #2563eb, #0ea5e9);
  color: white;
  cursor: pointer;
  font-weight: 700;
}

@media (max-width: 640px) {
  #chathexo-panel { left: 12px; right: 12px; width: auto; height: 76vh; bottom: 76px; }
  #chathexo-toggle { right: 12px; bottom: 12px; }
}