* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  color: #111827;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  min-height: 44px;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-secondary {
  background: #f3f4f6;
  color: #111827;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 10px 14px;
  min-height: 44px;
  font-weight: 700;
  cursor: pointer;
}

.btn-danger {
  background: #ef4444;
  color: white;
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  min-height: 44px;
  font-weight: 700;
  cursor: pointer;
}

.loading {
  padding: 16px;
  text-align: center;
  color: #111827;
}

.error {
  padding: 12px;
  background: #fee2e2;
  border: 1px solid #fecaca;
  color: #991b1b;
  border-radius: 10px;
}

.empty {
  padding: 16px;
  text-align: center;
  color: #6b7280;
}

.notice {
  padding: 12px;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  border-radius: 10px;
  font-weight: 700;
}