.guest-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.guest-actions[hidden],
.user-chip[hidden],
.auth-overlay[hidden] {
  display: none !important;
}

.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: grid;
  padding: 24px;
  place-items: center;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(8px);
  animation: fadeIn 0.15s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.auth-card {
  position: relative;
  max-height: calc(100vh - 48px);
  overflow-y: auto;
}

.auth-close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  width: 28px;
  height: 28px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--muted);
  background: var(--surface);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  transition: all 0.15s ease;
}

.auth-close:hover {
  color: var(--text);
  background: var(--surface-soft);
  border-color: var(--border-strong);
}

.guest-task-note {
  max-width: 320px;
  text-align: center;
  font-size: 13px;
}