body {
    font-family: 'Inter', sans-serif;
    background: #111827;
  }
  
  aside {
    background: #1f2937;
    border-right: 1px solid #374151;
    box-shadow: 2px 0 12px rgba(0, 0, 0, 0.1);
  }
  
  aside a {
    transition: all 0.3s ease;
    border-radius: 0.5rem;
    padding: 0.75rem;
  }
  
  aside a:hover, aside a.active {
    background: #374151;
    color: #60a5fa;
  }
  
  aside a i {
    transition: transform 0.3s ease;
  }
  
  aside a:hover i {
    transform: scale(1.1);
  }
  
  #avatar {
    box-shadow: 0 4px 24px rgba(59, 130, 246, 0.2);
  }
  
  main {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
  }
  
  #contributeModal {
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
  }
  
  @keyframes modalFadeIn {
    from { transform: translateY(40px) scale(0.98); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
  }
  
  /* Shimmer Skeletons */
  @keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
  }
  .skeleton {
    position: relative;
    overflow: hidden;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 0.375rem; /* ~rounded */
  }
  .skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.16), transparent);
    animation: shimmer 1.25s infinite;
  }
  /* Utility variants */
  .skeleton-rect { border-radius: 0.375rem; }
  .skeleton-text { height: 1rem; border-radius: 0.25rem; }
  .skeleton-circle { border-radius: 9999px; }

  /* Cap modal inner height so (max-height + vertical margins) <= viewport */
  .modal-shell { max-height: calc(100vh - 2rem); }