body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin: 0;
  padding: 20px;
  background: #0f172a;
  color: #e2e8f0;
}

.max-w-4xl {
  max-width: 56rem;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.p-6 {
  padding: 1.5rem;
}

.text-xl {
  font-size: 1.25rem;
  line-height: 1.75rem;
}

.font-semibold {
  font-weight: 600;
}

.mb-3 {
  margin-bottom: 0.75rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.flex {
  display: flex;
}

.gap-3 {
  gap: 0.75rem;
}

.items-center {
  align-items: center;
}

.text-sm {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

.text-gray-600 {
  color: #94a3b8;
}

.text-gray-500 {
  color: #64748b;
}

.text-red-600 {
  color: #f87171;
}

.w-full {
  width: 100%;
}

table {
  border-collapse: collapse;
  background: #1e293b;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

th, td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid #334155; 
  color: #e2e8f0; 
}

th {
  background: #334155; 
  font-weight: 600;
  color: #f1f5f9; 
}

tr:hover {
  background: #2d3748; 
}

button {
  padding: 8px 16px;
  background: #3b82f6;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s;
}

button:hover:not(:disabled) {
  background: #2563eb;
}

button:disabled {
  background: #475569; 
  cursor: not-allowed;
}

input[type="file"] {
  padding: 8px;
  border: 1px solid #475569; 
  border-radius: 6px;
  background: #1e293b; 
  color: #e2e8f0; 
}

input[type="file"]::file-selector-button {
  background: #334155;
  color: #e2e8f0;
  border: 1px solid #475569;
  border-radius: 4px;
  padding: 4px 8px;
  margin-right: 8px;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #1e293b;
}

::-webkit-scrollbar-thumb {
  background: #475569;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}