/**
 * Skeleton Loader Styles
 * Modern, animated loading states
 */

.skeleton {
  background: linear-gradient(90deg, #333 25%, #444 50%, #333 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: 4px;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
}

.skeleton-text.large {
  height: 2em;
}

.skeleton-avatar {
  width: 200px;
  height: 200px;
  border-radius: 50%;
}

.skeleton-card {
  padding: 20px;
  border-radius: 8px;
  background-color: #2a2a2a;
}

.skeleton-table-row {
  height: 50px;
  margin-bottom: 10px;
}

.skeleton-grid {
  height: 400px;
  width: 100%;
}

/* Error State */
.error-container {
  text-align: center;
  padding: 60px 20px;
}

.error-icon {
  font-size: 64px;
  color: #dc3545;
  margin-bottom: 20px;
}

.error-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #fff;
}

.error-message {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 20px;
}

/* Loading Spinner */
.spinner-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top: 4px solid #00d2ff;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
}

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

/* Empty State */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: rgba(255, 255, 255, 0.5);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 20px;
  opacity: 0.3;
}

.empty-state-text {
  font-size: 18px;
  font-weight: 500;
}

/* Progress Bar */
.progress-bar-container {
  width: 100%;
  height: 4px;
  background-color: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  position: relative;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #00d2ff, #3a7bd5);
  animation: progress 1.5s infinite;
}

@keyframes progress {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(400%);
  }
}

/* Pulse Animation for Important Elements */
.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Fade In Animation */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

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

/* Card Hover Effects */
.card-hover {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}