@layer base, layout, components, interactive;

@layer base {
  :root {
    --primary-color: #3498db;
    --text-color: #2c3e50;
    --bg-color: #f8f9fa;
    --ui-bg: rgba(255, 255, 255, 0.95);
    --ui-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --accent-color: #e67e22;
    --border-radius: 12px;
  }

  body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow: hidden;
  }

  h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
  }
}

@layer layout {
  #app {
    display: grid;
    grid-template-columns: 1fr 400px;
    height: 100vh;
    width: 100vw;
  }

  #canvas-container {
    width: 100%;
    height: 100%;
    cursor: grab;
  }

  #canvas-container:active {
    cursor: grabbing;
  }

  #ui-container {
    padding: 2.5rem;
    background-color: var(--ui-bg);
    backdrop-filter: blur(10px);
    box-shadow: var(--ui-shadow);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    z-index: 10;
  }

  @container (max-width: 800px) {
    #app {
      grid-template-columns: 1fr;
      grid-template-rows: 1fr auto;
    }

    #ui-container {
      height: 40vh;
      width: 100%;
      border-radius: 24px 24px 0 0;
    }
  }
}

@layer components {
  .price-tag {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-top: 0.5rem;
  }

  .control-group {
    margin-bottom: 2rem;
  }

  .control-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .color-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
  }

  .color-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s;
  }

  .color-btn.active {
    border-color: var(--primary-color);
    transform: scale(1.15);
  }

  .material-options {
    display: grid;
    gap: 0.75rem;
  }

  .material-btn {
    padding: 0.75rem 1rem;
    background: white;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
    text-align: left;
  }

  .material-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
  }

  .primary-btn {
    width: 100%;
    padding: 1rem;
    background-color: var(--text-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
  }

  .primary-btn:hover {
    background-color: #1a252f;
  }

  .primary-btn:active {
    transform: scale(0.98);
  }
}

@layer interactive {
  /* Dynamic interaction based on child state */
  .control-group:has(.color-btn.active) label {
    color: var(--primary-color);
  }
}