:root {
  --al-fast: 120ms;
  --al-mid:  200ms;
  --al-slow: 240ms;
  --al-ease: cubic-bezier(.2, 0, .2, 1);
}

a,
.btn,
.nav-link,
.form-control,
.form-select {
  transition:
    color var(--al-fast) var(--al-ease),
    background-color var(--al-fast) var(--al-ease),
    border-color var(--al-fast) var(--al-ease),
    box-shadow var(--al-fast) var(--al-ease);
}

.btn:active:not(:disabled) {
  transform: translateY(1px);
}

.al-busy {
  position: relative;
  pointer-events: none;
  color: transparent !important;
}

.al-busy::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 1.1em;
  height: 1.1em;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  color: #fff;
  animation: al-spin 700ms linear infinite;
}

.btn-outline-primary.al-busy::after,
.btn-light.al-busy::after,
.btn-outline-secondary.al-busy::after {
  color: var(--al-green);
}

@keyframes al-spin {
  to { transform: rotate(360deg); }
}

.al-appear {
  animation: al-appear var(--al-mid) var(--al-ease) both;
}

@keyframes al-appear {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

.al-flash {
  animation: al-flash 1200ms var(--al-ease) both;
}

@keyframes al-flash {
  from { background-color: var(--al-green-50); }
  to   { background-color: transparent; }
}

.al-dot {
  display: inline-block;
  width: .5rem;
  height: .5rem;
  border-radius: 50%;
  margin-right: .4rem;
  vertical-align: baseline;
  background: var(--al-300);
}

.al-dot--online {
  background: var(--al-green);
  animation: al-pulse 2.4s var(--al-ease) infinite;
}

.al-dot--offline { background: var(--al-300); }
.al-dot--error   { background: var(--bs-danger); }

@keyframes al-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(76, 175, 79, .45); }
  50%      { box-shadow: 0 0 0 .3rem rgba(76, 175, 79, 0); }
}

.al-copied {
  position: relative;
}

.al-copied::after {
  content: var(--al-copied-label, "Скопировано");
  position: absolute;
  left: 50%;
  bottom: calc(100% + .35rem);
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: .75rem;
  line-height: 1;
  padding: .3rem .5rem;
  border-radius: var(--al-radius-sm);
  background: var(--al-900);
  color: #fff;
  box-shadow: var(--al-shadow);
  animation: al-copied 1400ms var(--al-ease) both;
  pointer-events: none;
}

@keyframes al-copied {
  0%        { opacity: 0; transform: translate(-50%, 3px); }
  15%, 70%  { opacity: 1; transform: translate(-50%, 0); }
  100%      { opacity: 0; transform: translate(-50%, -2px); }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .al-busy::after {
    border-top-color: currentColor;
    opacity: .5;
  }

  .al-flash {
    background-color: var(--al-green-50);
  }

  .btn:active:not(:disabled) {
    transform: none;
  }
}