:root {
    --primary-color: #2196F3;
    --success-color: #4CAF50;
    --danger-color: #f44336;
    --background-color: #f5f5f5;
    --card-background: #ffffff;
    --border-radius: 8px;
    --spacing: 20px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing);
}

.card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    padding: var(--spacing);
    margin-bottom: var(--spacing);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

input[type="text"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.btn {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    margin: 5px;
    transition: background-color 0.3s;
}

.btn .material-icons {
    margin-right: 8px;
}

.primary { background-color: var(--primary-color); color: white; }
.success { background-color: var(--success-color); color: white; }
.danger { background-color: var(--danger-color); color: white; }

.accordion .pid-item {
    border: 1px solid #ddd;
    margin-bottom: 10px;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.pid-header {
    background: #f8f9fa;
    padding: 10px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pid-content {
    padding: 15px;
    display: none;
}

.pid-content.active {
    display: block;
}
  .parameter-item {
      margin: 10px 0;
      border: 1px solid #e0e0e0;
      border-radius: 4px;
  }

  .json-preview {
      background: #272822;
      color: #f8f8f2;
      padding: var(--spacing);
      border-radius: var(--border-radius);
  }

  #jsonOutput {
      margin: 0;
      white-space: pre-wrap;
      font-family: 'Consolas', monospace;
  }

  .section-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 15px;
  }

  .parameter-header {
      background: #eef2f7;
      padding: 10px 15px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-radius: 4px 4px 0 0;
      font-weight: 500;
  }

  .parameter-content {
      display: none;
      padding: 15px;
      background: #f8f9fa;
      border-radius: 0 0 4px 4px;
  }

  .parameter-content.active {
      display: block;
  }

  .pid-header .material-icons,
  .parameter-header .material-icons {
      transition: transform 0.3s ease;
  }

  .pid-header.active .material-icons,
  .parameter-header.active .material-icons {
      transform: rotate(180deg);
  }

.input-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.input-group.half {
    flex: 1;
    margin-bottom: 0;
}

.input-group.half input {
    width: 100%;
}