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

.alert {
    display: flex;
    padding: $spacer;
    border-width: 0 0 0 3px; // keep physical width for browsers; color uses logical start
    color: $gray-800;
    margin-bottom: $spacer;

    &.small {
      padding: calc($spacer / 2);
      font-size: 1rem;
    }

    .close {
      font-weight: 300;
      opacity: 1;
    }
}

// Bootstrap 5 alert structure has deeper nesting - use descendant selectors
.alert .alert-body{
  display: inline-flex;
  flex-direction: row;
}

.alert .alert-icon {
  display: inline-flex;
  align-items: flex-start;
  margin-inline-end: $spacer;
  margin-bottom: $spacer;

  @include media-breakpoint-up(sm) {
    margin-bottom: 0;
  }
}

.alert .alert-content {
  flex: 1 1 auto;
}

.alert .alert-title {
  margin-bottom: calc($spacer / 2);
}

.alert .alert-msg {
  p + p {
    margin-bottom: $spacer;
  }

  p:last-of-type {
    margin-bottom: 0;
  }
}

// Alert variant styles
.alert {

    &.alert-info {
      border-inline-start-color: theme-color("info");
      background-color: theme-color-light("info");
      fill: theme-color("info");
    }

    &.alert-success {
      border-inline-start-color: theme-color("success");
      background-color: theme-color-light("success");
      fill: theme-color("success");
    }

    &.alert-danger {
      border-inline-start-color: theme-color("danger");
      background-color: theme-color-light("danger");
      fill: theme-color("danger");
    }

    &.alert-warning {
      border-inline-start-color: theme-color("warning");
      background-color: theme-color-light("warning");
      fill: theme-color("warning");
    }
  }