/* ===== Subtle notifications ===== */
.app-toast-stack {
  position: fixed;
  z-index: 1600;
  left: 50%;
  top: calc(env(safe-area-inset-top, 0px) + 10px);
  transform: translateX(-50%);
  width: min(calc(100vw - 24px), 420px);
  display: grid;
  gap: 8px;
  pointer-events: none;
}

.app-toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 8px 9px 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(15, 118, 82, 0.12);
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
  box-shadow: 0 10px 28px rgba(15, 41, 30, 0.12);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  backdrop-filter: blur(14px) saturate(1.15);
  font-size: 0.86rem;
  font-weight: 800;
  line-height: 1.25;
  opacity: 1;
  transform: translateY(0) scale(1);
  transition: opacity 160ms ease, transform 160ms ease;
}

.app-toast.is-leaving {
  opacity: 0;
  transform: translateY(-8px) scale(0.98);
}

.app-toast-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 8px;
  border-radius: 999px;
  background: var(--green-bright);
}

.app-toast-success .app-toast-dot {
  background: var(--green-bright);
}

.app-toast-warning .app-toast-dot {
  background: #f59e0b;
}

.app-toast-error .app-toast-dot {
  background: #ef4444;
}

.app-toast-text {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.app-toast-close {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 999px;
  background: rgba(15, 41, 30, 0.06);
  color: var(--ink);
  font-size: 1.1rem;
  line-height: 1;
}

.app-toast-close:active {
  transform: scale(0.94);
}

/* Tree create sheet guidance should be inline, not a floating toast. */
.tree-create-helper {
  margin: 2px 0 14px;
  padding: 12px 14px;
  border: 1px solid rgba(16, 185, 129, 0.18);
  border-radius: 18px;
  background: rgba(209, 250, 229, 0.55);
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.45;
}

.tree-create-option[aria-disabled="true"] {
  cursor: default;
  opacity: 0.72;
  box-shadow: none;
}

.tree-create-option[aria-disabled="true"]:active,
.tree-create-option[aria-disabled="true"]:hover {
  transform: none;
}

@media (max-width: 480px) {
  .app-toast-stack {
    top: calc(env(safe-area-inset-top, 0px) + 8px);
    width: calc(100vw - 16px);
  }

  .app-toast {
    min-height: 40px;
    padding: 7px 8px 7px 11px;
    font-size: 0.82rem;
  }
}