/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-card {
  background: #111827;
  border: 1px solid #1f2937;
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.6);
  max-height: 90vh;
  overflow-y: auto;
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #374151; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #4b5563; }

/* Smooth transitions */
* { transition-property: background-color, border-color, color, opacity;
    transition-duration: 150ms; transition-timing-function: ease; }

/* Drop zone active state */
#drop-zone.drag-over {
  border-color: #6366f1;
  background-color: rgba(99, 102, 241, 0.05);
}

/* Flash alert fade */
#flash-alert {
  transition: opacity 0.5s ease;
}