:root {
      --bg: #f0f0f0;
      --fg: #222;
      --panel-bg: #fff;
      --border: #ccc;
      --accent: #007acc;
      --hover: #e0e0e0;
    }
    [data-theme="dark"] {
      --bg: #1e1e1e;
      --fg: #ddd;
      --panel-bg: #2a2a2a;
      --border: #444;
      --accent: #3399ff;
      --hover: #333;
    }
    body {
      font-family: 'monospace;';
      background: var(--bg);
      color: var(--fg);
      padding: 0 300px;
      transition: background 0.3s, color 0.3s;
    }
    h1 {
      margin-bottom: 16px;
      font-size: 1.8rem;
      text-align: center;
    }
    #controls {
      background: var(--panel-bg);
      padding: 12px;
      border-radius: 8px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.1);
      display: flex;
      gap: 8px;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      border: 1px solid var(--border);
      flex-wrap: wrap;
    }

    #global-attr-controls {
    order: 1;
    flex-basis: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 8px;
    justify-content: center;
    }

    #global-attr-controls input[type="number"] {
    width: 8ch;
    box-sizing: border-box;
    }

    #flag-controls {
    order: 2;
    flex-basis: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 8px;
    }

    #controls > *:not(#global-attr-controls) {
    flex: none;
    }

    input[type="file"] {
      padding: 4px;
    }
    button {
      background: var(--accent);
      color: #fff;
      border: none;
      border-radius: 4px;
      padding: 8px 16px;
      font-size: 0.9rem;
      cursor: pointer;
      transition: background 0.2s;
    }
    button:disabled {
      opacity: 0.5;
      cursor: default;
    }
    button:not(:disabled):hover {
      background: var(--hover);
      color: var(--fg);
    }
    #main {
      display: flex;
      gap: 32px;
      height: calc(100vh - 140px);
    }
    #codepoint-grid {
      flex: 0 0 auto;
      display: grid;
      grid-template-columns: repeat(16, min-content);
      gap: 2px;
      padding: 4px;
      background: var(--panel-bg);
      border-radius: 4px;
      border: 1px solid var(--border);
      overflow-y: auto;
    }
    .codepoint {
      display: flex;
      flex-direction: column;
      align-items: center;
      cursor: pointer;
      padding: 4px;
      border: 1px solid var(--border);
      border-radius: 4px;
      transition: background 0.2s, border-color 0.2s;
    }
    .codepoint:hover {
      background: var(--hover);
    }
    .codepoint.selected {
      border-color: var(--accent);
      background: var(--hover);
    }
    .codepoint-label {
      font-size: 8px;
      margin-top: 2px;
      color: var(--fg);
    }
    #editor {
      width: 720px;
      background: var(--panel-bg);
      padding: 16px;
      border-radius: 8px;
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      align-items: center;
      box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    }
    #editor-canvas {
      image-rendering: pixelated;
      background: var(--bg);
      border: 1px solid var(--border);
      cursor: crosshair;
      margin-bottom: 8px;
      box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
    }
    #editor-label {
      font-size: 0.9rem;
      color: var(--fg);
    }
    #codepoint-grid::-webkit-scrollbar,
    body::-webkit-scrollbar {
      width: 8px;
      height: 8px;
    }
    #codepoint-grid::-webkit-scrollbar-thumb,
    body::-webkit-scrollbar-thumb {
      background: var(--border);
      border-radius: 4px;
    }