/* Skeleton Loading Animations */

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.skeleton-base {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
  border-radius: 4px;
}

/* Chat List Skeleton */
.skeleton-chat-list {
  padding: 10px;
}

.skeleton-chat-item {
  display: flex;
  align-items: center;
  padding: 12px;
  margin-bottom: 8px;
  background: white;
  border-radius: 8px;
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
  margin-right: 12px;
  flex-shrink: 0;
}

.skeleton-chat-content {
  flex: 1;
}

.skeleton-title {
  height: 16px;
  width: 60%;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
  border-radius: 4px;
  margin-bottom: 8px;
}

.skeleton-message {
  height: 14px;
  width: 80%;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
  border-radius: 4px;
}

/* Message List Skeleton */
.skeleton-message-list {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skeleton-message {
  display: flex;
  align-items: flex-end;
}

.skeleton-message-left {
  justify-content: flex-start;
}

.skeleton-message-right {
  justify-content: flex-end;
}

.skeleton-message-content {
  max-width: 70%;
  background: white;
  padding: 12px 16px;
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.skeleton-message-text {
  height: 14px;
  width: 200px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
  border-radius: 4px;
  margin-bottom: 8px;
}

.skeleton-message-time {
  height: 10px;
  width: 60px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
  border-radius: 4px;
}

/* Full Page Loader */
.fullpage-loader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  backdrop-filter: blur(4px);
}

.loader-content {
  text-align: center;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid #667BC6;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

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

.loader-content p {
  color: #667BC6;
  font-size: 16px;
  font-weight: 500;
}

/* Loading overlay for specific sections */
.loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  border-radius: inherit;
}

.loading-overlay .spinner {
  width: 30px;
  height: 30px;
  border-width: 3px;
}

/* Smooth fade-in for loaded content */
.fade-in {
  animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}