body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f4f6f8;
  margin: 0;
}

.app-container {
  max-width: 900px;
  margin: 40px auto;
  padding: 24px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}

h1 {
  margin-top: 0;
}

.upload-box {
  border: 1px dashed #c0c7d0;
  border-radius: 6px;
  padding: 16px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.upload-box h3 {
  width: 100%;
  margin: 0 0 4px 0;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 4px;
  padding: 6px 12px;
  background: #2f6fed;
  color: #fff;
  font-size: 14px;
}

button:disabled {
  background: #9db3e8;
  cursor: not-allowed;
}

button.danger {
  background: #d64545;
}

.file-table {
  width: 100%;
  border-collapse: collapse;
}

.file-table th,
.file-table td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid #eaeef2;
}

.actions-cell {
  display: flex;
  gap: 8px;
}

.empty-state {
  color: #6b7280;
}

.error-text {
  color: #d64545;
  margin-top: 8px;
}

.preview-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.preview-modal {
  background: #fff;
  width: 80vw;
  height: 85vh;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid #eaeef2;
}

.preview-object {
  flex: 1;
  width: 100%;
  border: none;
}