/**
 * Skeleton UI Styles
 * Shown while Flutter loads to reduce perceived load time
 */

/* Container */
.skeleton-container {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  overflow: hidden;
  z-index: 9999;
}

/* Skeleton shimmer animation */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

/* Base skeleton element */
.skeleton-title,
.skeleton-text,
.skeleton-image,
.skeleton-button,
.skeleton-logo,
.skeleton-nav-item {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 25%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0.05) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: 4px;
}

/* Header */
.skeleton-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
}

.skeleton-logo {
  width: 140px;
  height: 40px;
  border-radius: 8px;
}

.skeleton-nav {
  display: flex;
  gap: 16px;
}

.skeleton-nav-item {
  width: 80px;
  height: 32px;
  border-radius: 16px;
}

@media (max-width: 768px) {
  .skeleton-nav {
    display: none;
  }
}

/* Content Area */
.skeleton-content {
  flex: 1;
  padding: 24px;
  overflow: hidden;
}

/* Cards */
.skeleton-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
}

.skeleton-hero {
  padding: 48px 32px;
  text-align: center;
  max-width: 600px;
  margin: 0 auto 32px;
}

/* Title */
.skeleton-title {
  height: 32px;
  width: 70%;
  margin: 0 auto 16px;
}

.skeleton-title.small {
  height: 20px;
  width: 60%;
  margin: 12px 0 8px;
}

/* Text */
.skeleton-text {
  height: 16px;
  width: 100%;
  margin-bottom: 12px;
}

.skeleton-text.short {
  width: 50%;
  margin: 0 auto 24px;
}

/* Button */
.skeleton-button {
  width: 160px;
  height: 48px;
  margin: 0 auto;
  border-radius: 24px;
}

/* Image placeholder */
.skeleton-image {
  width: 100%;
  height: 120px;
  border-radius: 12px;
  margin-bottom: 12px;
}

/* Grid */
.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 600px) {
  .skeleton-grid {
    grid-template-columns: 1fr;
  }
  
  .skeleton-content {
    padding: 16px;
  }
  
  .skeleton-hero {
    padding: 32px 24px;
  }
}

/* Loading text */
.skeleton-loading-text {
  text-align: center;
  padding: 24px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.skeleton-loading-text span {
  animation: bounce 1s ease-in-out infinite;
  display: inline-block;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

/* Fade out transition */
.skeleton-container.fade-out {
  opacity: 0;
  transition: opacity 0.3s ease-out;
}

/* Accessibility: reduce motion */
@media (prefers-reduced-motion: reduce) {
  .skeleton-title,
  .skeleton-text,
  .skeleton-image,
  .skeleton-button,
  .skeleton-logo,
  .skeleton-nav-item {
    animation: none;
    background: rgba(255, 255, 255, 0.08);
  }
  
  .skeleton-loading-text span {
    animation: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .skeleton-container {
    background: #000;
  }
  
  .skeleton-card {
    border: 1px solid #444;
  }
  
  .skeleton-title,
  .skeleton-text,
  .skeleton-image,
  .skeleton-button,
  .skeleton-logo,
  .skeleton-nav-item {
    background: #333;
    animation: none;
  }
}