/* Help bot: floating button, chat panel and guided tour. Palette: black, #217cff, white only. */
.sup-fab {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 55;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--blue-60);
  background: var(--blue);
  color: var(--white);
  font-size: 26px;
  line-height: 1;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: var(--glow-md);
  transition: transform 0.15s ease;
}
.sup-fab:hover { transform: scale(1.06); }
.sup-fab:focus-visible { outline: 2px solid var(--white); outline-offset: 3px; }

.sup-bubble {
  position: fixed;
  right: 82px;
  bottom: 30px;
  z-index: 55;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 8px 6px 14px;
  border-radius: 999px;
  background: var(--black);
  border: 1px solid var(--blue-35);
  box-shadow: var(--glow-sm);
  animation: sup-bob 3s ease-in-out infinite;
}
.sup-bubble-text { background: none; border: 0; color: var(--text); font: inherit; font-size: 13px; cursor: pointer; }
.sup-bubble-x { background: none; border: 0; color: var(--text-3); font-size: 18px; line-height: 1; cursor: pointer; padding: 0 4px; }
@keyframes sup-bob { 50% { transform: translateY(-4px); } }

.sup-panel {
  position: fixed;
  right: 20px;
  bottom: 84px;
  z-index: 55;
  width: 380px;
  max-width: calc(100vw - 32px);
  height: min(560px, calc(100vh - 110px));
  display: flex;
  flex-direction: column;
  background: var(--black);
  border: 1px solid var(--blue-35);
  border-radius: var(--radius);
  box-shadow: var(--glow-lg), 0 12px 40px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}
.sup-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}
.sup-head > div:first-child { display: grid; gap: 2px; }
.sup-head-actions { display: flex; align-items: center; gap: 10px; }
.sup-body { flex: 1; overflow-y: auto; padding: 14px; display: grid; gap: 10px; align-content: start; }
.sup-empty { display: grid; gap: 10px; padding: 16px; justify-items: start; }
.sup-body .sup-empty { padding: 4px 0; }
.sup-starters { display: grid; gap: 6px; width: 100%; }
.sup-starter {
  text-align: left;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.sup-starter:hover { border-color: var(--blue-60); background: var(--blue-10); }
.sup-msg { max-width: 92%; font-size: 14px; line-height: 1.5; }
.sup-msg.user { justify-self: end; background: var(--blue-20); border: 1px solid var(--blue-35); border-radius: 12px 12px 2px 12px; padding: 8px 12px; }
.sup-msg.user p { margin: 0; overflow-wrap: anywhere; }
.sup-msg.assistant { justify-self: start; background: var(--surface-2); border: 1px solid var(--line); border-radius: 12px 12px 12px 2px; padding: 8px 12px; }
.sup-guide, .sup-escalate { margin-top: 8px; display: block; }
.sup-form { display: grid; gap: 8px; margin-top: 8px; }
.sup-form label { display: grid; gap: 4px; font-size: 12px; color: var(--text-2); }
.sup-note { margin: 8px 0 0; font-size: 12px; }
.sup-note.ok { color: var(--white); }
.sup-note.err { color: var(--white); border-left: 2px solid var(--blue); padding-left: 8px; }
.sup-ask { display: flex; gap: 8px; padding: 10px 12px; border-top: 1px solid var(--line); }
.sup-ask .input { flex: 1; min-width: 0; }
.sup-typing { display: inline-flex; gap: 4px; padding: 4px 0; }
.sup-typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--blue); animation: sup-dot 0.9s infinite ease-in-out; }
.sup-typing i:nth-child(2) { animation-delay: 0.15s; }
.sup-typing i:nth-child(3) { animation-delay: 0.3s; }
@keyframes sup-dot { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }

@media (max-width: 520px) {
  .sup-panel { right: 8px; left: 8px; bottom: 76px; width: auto; max-width: none; }
  .sup-bubble { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .sup-bubble, .sup-typing i { animation: none; }
  .sup-fab { transition: none; }
}