.collab-badge {
  position: fixed;
  right: 14px;
  /* Sopra la targhetta "Poseidon core vNN" (che sta a taskbar+6px), non addosso. */
  bottom: calc(var(--taskbar-h, 48px) + 28px);
  /* Sopra il gate post-login (240), sotto le notifiche (250) e lo Start (350). */
  z-index: 245;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(18, 22, 34, 0.92);
  color: #eef1fb;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(8px);
}

.collab-badge.hidden {
  display: none;
}

.collab-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #9aa3c4;
  flex-shrink: 0;
}

.collab-badge.is-online .collab-badge-dot {
  background: #37b26b;
}

.collab-badge.is-waiting .collab-badge-dot {
  background: #f0b429;
  animation: collab-pulse 1.2s ease-in-out infinite;
}

.collab-badge.is-failed .collab-badge-dot {
  background: #e0533d;
}

@keyframes collab-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

.collab-diag {
  position: fixed;
  /* In basso a SINISTRA: a destra vivono notifiche, badge collaboratore e
     targhetta versione — il pannello li copriva tutti. */
  left: 14px;
  right: auto;
  bottom: calc(var(--taskbar-h, 48px) + 14px);
  /* Sopra il gate post-login (240), sotto notifiche (250) e Start (350). */
  z-index: 246;
  width: min(420px, calc(100vw - 28px));
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(16, 20, 32, 0.96);
  color: #eef1fb;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.collab-diag.hidden {
  display: none;
}

.collab-diag-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 14px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.collab-diag-head h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
}

.collab-diag-head p {
  margin: 4px 0 0;
  font-size: 12px;
  color: #9aa3c4;
  line-height: 1.45;
}

.collab-diag-hide {
  border: 0;
  background: transparent;
  color: #9aa3c4;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  padding: 4px 0;
  white-space: nowrap;
}

.collab-diag-hide:hover {
  color: #eef1fb;
}

.collab-diag-timer {
  padding: 0 14px 8px;
  font-size: 12px;
  color: #c5cbe0;
}

.collab-diag-log {
  margin: 0;
  padding: 10px 14px;
  max-height: 180px;
  overflow: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  line-height: 1.5;
  color: #b8bfd8;
  background: rgba(0, 0, 0, 0.22);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  white-space: pre-wrap;
}

.collab-diag-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 14px 14px;
}

.collab-diag-btn {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.05);
  color: #eef1fb;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
}

.collab-diag-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.collab-diag-btn.primary {
  background: #3b82f6;
  border-color: transparent;
}

.collab-diag-btn.primary:hover {
  background: #2563eb;
}

.collab-diag-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}