/**
 * Классический спиннер (border-ring) + оверлей.
 */

:root {
  --loader-size: 38px;
  --loader-speed: 0.9s;
  --loader-track: rgba(0, 0, 0, 0.12);
  --loader-arc: rgba(0, 0, 0, 0.55);
  --loader-label: rgba(0, 0, 0, 0.55);
  --loader-overlay-bg: rgba(255, 255, 255, 0.94);
}

.classic-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 13px;
  user-select: none;
  -webkit-user-select: none;
}

.classic-loader__spinner {
  width: var(--loader-size);
  height: var(--loader-size);
  border: 3px solid var(--loader-track);
  border-top-color: var(--loader-arc);
  border-radius: 50%;
  animation: classic-spin var(--loader-speed) linear infinite;
  flex-shrink: 0;
}

.classic-loader__label {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--loader-label);
  letter-spacing: 0.01em;
}

.classic-loader--sm { --loader-size: 30px; }
.classic-loader--sm .classic-loader__label { font-size: 11px; }

.classic-loader--lg { --loader-size: 44px; }
.classic-loader--lg .classic-loader__label { font-size: 14px; }

@keyframes classic-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.dot-preloader-overlay {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--loader-overlay-bg);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}

.dot-preloader-overlay.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.dot-preloader-overlay.is-leaving {
  opacity: 0;
  visibility: hidden;
}

.dot-preloader-overlay__card {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  background: transparent;
  box-shadow: none;
  transform: scale(0.96);
  opacity: 0;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.24s ease;
}

.dot-preloader-overlay.is-visible .dot-preloader-overlay__card {
  transform: scale(1);
  opacity: 1;
}