src/assets/styles/bmc/custom/_toasts.scss

// Toast container positioning - below AppHeader
.b-toaster,
.toast-container {
  top: calc(#{$header-height} + #{$spacer})!important; // position below AppHeader (48px + spacing)
}

// Toast component and status icon style
.toast {
  padding: calc(#{$spacer} / 2) calc(#{$spacer} / 2) calc(#{$spacer} / 2) $spacer+2;
  border-width: 0 0 0 3px; // physical width retained; color via logical property
  box-shadow: $box-shadow;
  margin-bottom: $spacer; // vertical spacing between stacked toasts
  .close {
    font-weight: 300;
    opacity: 1;
  }
  // Hide progress bar in all toasts (CSS workaround since JS props don't work as documented in Bootstrap Vue Next 0.40.8)
  .progress {
    display: none !important;
  }
}

.toast-header {
  display: flex;
  align-items: flex-start;
  background-color: inherit!important; //override specificity
  border: none;
  color: theme-color("dark")!important; //override specificity
  padding-bottom: calc(#{$spacer} / 4); // spacing between header and body
}

.toast-icon {
  display: flex;
  margin-inline-end: 1rem;

  svg {
    margin-inline-start: -2.5rem;
  }

  + .close {
    line-height: .9;
  }
}

.toast-body {
  color: theme-color("dark");
  padding-top: calc(#{$spacer} / 4); // spacing below header
  white-space: pre-line; // Preserve newlines from \n characters
  line-height: 1.6; // Better line spacing for multi-line content and timestamps
}

// Bootstrap Vue 2 class names (backward compatibility)
.b-toast-success .toast {
  border-inline-start-color: theme-color("success")!important;
  background-color: theme-color-light("success")!important;
}

.b-toast-info .toast {
  border-inline-start-color: theme-color("info")!important;
  background-color: theme-color-light("info")!important;
}

.b-toast-danger .toast {
  border-inline-start-color: theme-color("danger")!important;
  background-color: theme-color-light("danger")!important;
}

.b-toast-warning .toast {
  border-inline-start-color: theme-color("warning")!important;
  background-color: theme-color-light("warning")!important;
}

// Bootstrap Vue Next class names
.toast.bg-success {
  border-inline-start-color: theme-color("success")!important;
  background-color: theme-color-light("success")!important;
}

.toast.bg-info {
  border-inline-start-color: theme-color("info")!important;
  background-color: theme-color-light("info")!important;
}

.toast.bg-danger {
  border-inline-start-color: theme-color("danger")!important;
  background-color: theme-color-light("danger")!important;
}

.toast.bg-warning {
  border-inline-start-color: theme-color("warning")!important;
  background-color: theme-color-light("warning")!important;
}

// Override Bootstrap's solid variant backgrounds
.toast.text-bg-success,
.toast.text-bg-info,
.toast.text-bg-danger,
.toast.text-bg-warning {
  color: theme-color("dark")!important;
}

.toast.text-bg-success {
  border-inline-start-color: theme-color("success")!important;
  background-color: theme-color-light("success")!important;
}

.toast.text-bg-info {
  border-inline-start-color: theme-color("info")!important;
  background-color: theme-color-light("info")!important;
}

.toast.text-bg-danger {
  border-inline-start-color: theme-color("danger")!important;
  background-color: theme-color-light("danger")!important;
}

.toast.text-bg-warning {
  border-inline-start-color: theme-color("warning")!important;
  background-color: theme-color-light("warning")!important;
}