// Responsive display utilities
.mobile-only {
  display: block;
  @media (min-width: 768px) {
    display: none;
  }
}

.desktop-only {
  display: none;
  @media (min-width: 768px) {
    display: block;
  }
}

.d-none {
  display: none !important;
}

.d-block {
  display: block !important;
}

// Medium breakpoint and up (768px+)
@media (min-width: 768px) {
  .d-md-none {
    display: none !important;
  }

  .d-md-block {
    display: block !important;
  }

  .d-md-table-cell {
    display: table-cell !important;
  }
}

// Display inline
.d-inline {
  display: inline !important;
}

// For screen readers
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

// Accessibility utilities
.visually-hidden-focusable {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;

  &:focus,
  &:focus-within {
    position: static !important;
    width: auto !important;
    height: auto !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: normal !important;
  }
}

.focus-ring {
  outline: none;

  &:focus {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
  }

  &:focus:not(:focus-visible) {
    outline: none;
  }

  &:focus-visible {
    outline: 2px solid #0d6efd;
    outline-offset: 2px;
  }
}

// Small breakpoint specific (576px+)
@media (min-width: 576px) {
  .d-sm-block {
    display: block !important;
  }

  .d-sm-none {
    display: none !important;
  }
}

// Spacing utilities
.mb-1 {
  margin-bottom: 0.25rem;
}

.p-0 {
  padding: 0;
}

.p-1 {
  padding: 0.25rem;
}

// Position utilities
.sticky-top {
  position: sticky;
  top: 0;
  z-index: 10;
}

// Grid/Layout utilities
.row {
  display: flex;
  flex-wrap: wrap;
  margin-left: 0;
  margin-right: 0;
}

// Tab navigation utilities
.nav {
  display: flex;
  flex-wrap: wrap;
  padding-left: 0;
  margin-bottom: 0;
  list-style: none;
}

.nav-tabs {
  border-bottom: none;
}

.nav-item {
  margin-bottom: 0;
}

.nav-link {
  display: block;
  padding: 0;
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
}

.tab-content {
  > .tab-pane {
    display: none;

    &.active,
    &.show {
      display: block;
    }
  }

  .spinner-border {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: text-bottom;
    border: 0.25em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border-animation 0.75s linear infinite;
  }

  @keyframes spinner-border-animation {
    to {
      transform: rotate(360deg);
    }
  }

  .text-center {
    text-align: center !important;
  }
}