html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

.card {
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.table th {
  white-space: nowrap;
}

.badge {
  font-weight: 500;
}

.navbar-brand {
  font-weight: 600;
}

.drop-zone {
  border: 2px dashed #dee2e6;
  border-radius: 8px;
  transition: all 0.2s;
  cursor: pointer;
}

.drop-zone:hover,
.drop-zone-active {
  border-color: #0d6efd;
  background-color: #f0f7ff;
}