/* FAB Contacts — изолированные стили с префиксом .fab-social, box-sizing только внутри компонента */

.fab-social {
  position: fixed;
  right: var(--space-md, 1rem);
  bottom: calc(var(--space-md, 1rem) + env(safe-area-inset-bottom, 0px));
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  box-sizing: border-box;
  pointer-events: none;
}

.fab-social *,
.fab-social *::before,
.fab-social *::after {
  box-sizing: border-box;
}

.fab-social__trigger,
.fab-social__menu,
.fab-social__item {
  pointer-events: auto;
}

.fab-social__menu {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: var(--space-sm, 0.5rem);
  margin-bottom: var(--space-sm, 0.5rem);
  padding: 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(1rem);
  transition: opacity var(--transition, 0.2s ease), transform var(--transition, 0.2s ease), visibility 0s linear var(--transition, 0.2s ease);
}

.fab-social--open .fab-social__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--transition, 0.2s ease), transform var(--transition, 0.2s ease), visibility 0s linear 0s;
}

.fab-social__item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-white, #fff);
  color: var(--color-accent, #0d9488);
  border: 2px solid var(--color-accent, #0d9488);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.08));
  text-decoration: none;
  transition: transform var(--transition, 0.2s ease), background var(--transition, 0.2s ease), color var(--transition, 0.2s ease);
  opacity: 0;
  transform: translateY(0.5rem);
}

.fab-social--open .fab-social__item {
  opacity: 1;
  transform: translateY(0);
}

.fab-social__item:nth-child(1) { transition-delay: 0.05s; }
.fab-social__item:nth-child(2) { transition-delay: 0.1s; }
.fab-social__item:nth-child(3) { transition-delay: 0.15s; }
.fab-social__item:nth-child(4) { transition-delay: 0.2s; }

.fab-social__item:hover,
.fab-social__item:focus-visible {
  background: var(--color-accent, #0d9488);
  color: var(--color-white, #fff);
  transform: scale(1.05);
}

.fab-social__item:focus-visible {
  outline: 2px solid var(--color-accent-light, #ccfbf1);
  outline-offset: 2px;
}

.fab-social__item svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}

.fab-social__trigger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--color-accent, #0d9488);
  color: var(--color-white, #fff);
  box-shadow: var(--shadow-lg, 0 8px 24px rgba(0,0,0,0.1));
  cursor: pointer;
  transition: background var(--transition, 0.2s ease), transform var(--transition, 0.2s ease), box-shadow var(--transition, 0.2s ease);
}

.fab-social__trigger:hover,
.fab-social__trigger:focus-visible {
  background: var(--color-accent-hover, #0f766e);
  transform: scale(1.05);
}

.fab-social__trigger:focus-visible {
  outline: 2px solid var(--color-accent-light, #ccfbf1);
  outline-offset: 2px;
}

.fab-social__trigger svg {
  width: 24px;
  height: 24px;
}

/* Пульсация только у основной кнопки, отключается при открытом меню и при prefers-reduced-motion */
@media (prefers-reduced-motion: no-preference) {
  .fab-social__trigger {
    animation: fab-social-pulse 2s ease-in-out infinite;
  }
  .fab-social--open .fab-social__trigger {
    animation: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .fab-social__menu,
  .fab-social--open .fab-social__menu,
  .fab-social__item,
  .fab-social--open .fab-social__item {
    transition-duration: 0.01ms;
  }
  .fab-social__item:nth-child(1),
  .fab-social__item:nth-child(2),
  .fab-social__item:nth-child(3),
  .fab-social__item:nth-child(4) {
    transition-delay: 0s;
  }
}

@keyframes fab-social-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

@media (max-width: 479px) {
  .fab-social {
    right: max(0.75rem, env(safe-area-inset-right, 0px));
    bottom: calc(0.75rem + env(safe-area-inset-bottom, 0px));
  }
}

@media (min-width: 480px) {
  .fab-social {
    right: var(--space-lg, 1.5rem);
    bottom: calc(var(--space-lg, 1.5rem) + env(safe-area-inset-bottom, 0px));
  }
}