body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: #fff;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 900px;
  margin: auto;
  background: rgba(0, 0, 0, 0.85);
  padding: 30px;
  border-radius: 10px;
  margin-top: 20px;
}

input, select, textarea, button {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  margin-bottom: 15px;
  border: none;
  border-radius: 5px;
  box-sizing: border-box;
}

.checkbox-group-horizontal {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  margin-bottom: 30px;
  justify-content: center;
}

.checkbox-block {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
}

.checkbox-block label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-size: 15px;
  white-space: nowrap;
  line-height: 1;
  margin: 0;
}

.checkbox-block input[type="checkbox"] {
  margin: 0;
  vertical-align: middle;
  transform: translateY(1px);
}

table {
  width: 100%;
  margin-bottom: 20px;
  border-collapse: collapse;
  background-color: #fff;
  color: #000;
}

th, td {
  border: 1px solid #ccc;
  padding: 8px;
  text-align: left;
}

h2, h3, h4 {
  color: #fff;
  margin-top: 30px;
}

button {
  background-color: #007BFF;
  color: white;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background-color: #0056b3;
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  font-size: 14px;
  margin: 5px;
}

.btn-primary {
  background-color: #007BFF;
  color: white;
}

.btn-primary:hover {
  background-color: #0056b3;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.table th,
.table td {
  border: 1px solid #ddd;
  padding: 12px;
  text-align: left;
}

.table th {
  background-color: #f2f2f2;
  color: #333;
}

.form-group {
  margin-bottom: 20px;
}