#toast {
  position: fixed;
  bottom: calc(60px + env(safe-area-inset-bottom) + 14px); /* Default: trên BottomNav */
  left: 50%;
  transform: translateX(-50%);
  z-index: 5000;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: calc(100% - 24px);
  pointer-events: none;
}

.toast-item {
  background: var(--surface);
  color: var(--text-main);
  border-radius: var(--radius-lg);
  border-left: 6px solid var(--accent);
  padding: 16px 20px;
  box-shadow: var(--nm-float); /* Hiệu ứng nổi nguyên khối */
  width: 100%;
  max-width: 360px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  pointer-events: auto;
  font-size: .9rem;
  font-weight: 600;
  border-top: 1px solid rgba(255,255,255,0.4);
}

/* Variant colors via border-left */
.toast-item--success { border-left-color: var(--success); }
.toast-item--danger  { border-left-color: var(--danger); }
.toast-item--info    { border-left-color: var(--primary-light); }

.tbtn {
  background: var(--surface);
  box-shadow: var(--nm-flat);
  color: var(--primary);
  border: none;
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: .8rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--nm-anim);
}

.tbtn:active {
  box-shadow: var(--nm-inset);
}

/* Desktop: Di chuyển vào góc */
@media (min-width: 600px) {
  #toast {
    bottom: 18px;
    right: 18px;
    left: auto;
    transform: none;
    width: auto;
    align-items: flex-end;
  }

  .toast-item {
    width: auto;
    min-width: 260px;
  }
}