/**
 * InfiniteScrollMessages CSS
 * Scrollable container with loading indicators
 */

.infinite-scroll-messages-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow-y: auto;
  scroll-behavior: smooth;
}

/* Loading indicator at top */
.scroll-loading-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1.5rem;
  color: #72767d;
  font-size: 0.9375rem;
}

/* Animated spinner */
.spinner {
  width: 20px;
  height: 20px;
  border: 3px solid rgba(114, 137, 218, 0.2);
  border-top: 3px solid #7289da;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Sentinel element for intersection observer */
.scroll-sentinel {
  height: 1px;
  margin-top: 0;
}

/* End of messages indicator */
.scroll-end-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  color: #72767d;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
}

.scroll-end-indicator::before,
.scroll-end-indicator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    #72767d,
    transparent
  );
}

.scroll-end-indicator::before {
  margin-right: 1rem;
}

.scroll-end-indicator::after {
  margin-left: 1rem;
}

.scroll-end-indicator span {
  white-space: nowrap;
}

/* Scrollbar styling */
.infinite-scroll-messages-container::-webkit-scrollbar {
  width: 8px;
}

.infinite-scroll-messages-container::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}

.infinite-scroll-messages-container::-webkit-scrollbar-thumb {
  background: rgba(0, 217, 255, 0.2);
  border-radius: 4px;
  transition: background 0.2s;
}

.infinite-scroll-messages-container::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 217, 255, 0.4);
}

/* Firefox scrollbar */
.infinite-scroll-messages-container {
  scrollbar-color: rgba(0, 217, 255, 0.2) rgba(0, 0, 0, 0.1);
  scrollbar-width: thin;
}

@media (max-width: 768px) {
  .scroll-loading-indicator {
    padding: 1rem;
    font-size: 0.875rem;
  }

  .scroll-end-indicator {
    padding: 1.5rem 1rem;
    font-size: 0.75rem;
  }

  .scroll-end-indicator::before {
    margin-right: 0.75rem;
  }

  .scroll-end-indicator::after {
    margin-left: 0.75rem;
  }
}