* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      background: #1a1a2e;
      color: #eee;
      overflow: hidden;
    }

    .banner {
      background: linear-gradient(90deg, 
        #000 0%, #ffd700 2%, #000 4%, #ffd700 6%, #000 8%, #ffd700 10%, #000 12%,
        #333 12%, #333 88%,
        #000 88%, #ffd700 90%, #000 92%, #ffd700 94%, #000 96%, #ffd700 98%, #000 100%);
      padding: 12px 20px;
      text-align: center;
      border-bottom: 2px solid #ffd700;
    }

    .banner-text {
      color: #ffd700;
      font-weight: bold;
      font-size: 14px;
      text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
    }

    .container {
      display: flex;
      flex-direction: column;
      height: calc(100vh - 50px);
    }

    .top-nav {
      background: #16213e;
      border-bottom: 2px solid #0f3460;
      display: flex;
      padding: 0;
    }

    .tab {
      padding: 15px 25px;
      background: transparent;
      border: none;
      color: #aaa;
      cursor: pointer;
      font-size: 14px;
      font-weight: 500;
      border-bottom: 3px solid transparent;
      transition: all 0.2s;
    }

    .tab:hover {
      background: rgba(255,255,255,0.05);
      color: #fff;
    }

    .tab.active {
      color: #fff;
      border-bottom-color: #e94560;
      background: rgba(233,69,96,0.1);
    }

    .main-content {
      display: flex;
      flex: 1;
      overflow: hidden;
    }

    .left-sidebar {
      width: 200px;
      background: #16213e;
      border-right: 2px solid #0f3460;
      overflow-y: auto;
    }

    .deploy-option {
      padding: 15px 20px;
      color: #aaa;
      cursor: pointer;
      font-size: 14px;
      border-left: 3px solid transparent;
      transition: all 0.2s;
    }

    .deploy-option:hover {
      background: rgba(255,255,255,0.05);
      color: #fff;
    }

    .deploy-option.active {
      background: rgba(233,69,96,0.1);
      border-left-color: #e94560;
      color: #fff;
    }

    .canvas-area {
      flex: 1;
      display: flex;
      flex-direction: column;
      background: #0f3460;
      position: relative;
      overflow: hidden;
    }

    .toolbar {
      background: #16213e;
      padding: 10px 15px;
      display: flex;
      gap: 10px;
      border-bottom: 1px solid #0f3460;
      flex-wrap: wrap;
      align-items: center;
    }

    .tool-btn {
      padding: 8px 16px;
      background: #0f3460;
      border: 1px solid #1a508b;
      border-radius: 4px;
      color: #fff;
      cursor: pointer;
      font-size: 13px;
      transition: all 0.2s;
      position: relative;
    }

    .tool-btn:hover {
      background: #1a508b;
    }

    .tool-btn.active {
      background: #e94560;
      border-color: #e94560;
    }

    .color-picker {
      display: flex;
      gap: 5px;
      align-items: center;
    }

    .color-swatch {
      width: 28px;
      height: 28px;
      border-radius: 4px;
      cursor: pointer;
      border: 2px solid transparent;
      transition: all 0.2s;
    }

    .color-swatch:hover {
      transform: scale(1.1);
    }

    .color-swatch.active {
      border-color: #fff;
      box-shadow: 0 0 0 2px #e94560;
    }

    .canvas-wrapper {
      flex: 1;
      position: relative;
      overflow: auto;
      background: #0a0e1a;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    #battlefield {
      display: block;
      background: #1a1a2e;
      cursor: crosshair;
      image-rendering: crisp-edges;
    }

    .drawing-hint {
      position: absolute;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(233, 69, 96, 0.95);
      color: #fff;
      padding: 12px 24px;
      border-radius: 6px;
      font-size: 14px;
      font-weight: 500;
      box-shadow: 0 4px 12px rgba(0,0,0,0.3);
      animation: slideDown 0.3s ease-out;
      z-index: 100;
    }

    @keyframes slideDown {
      from {
        opacity: 0;
        transform: translateX(-50%) translateY(-10px);
      }
      to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
      }
    }

    input[type="text"] {
      padding: 6px 10px;
      background: #0f3460;
      border: 1px solid #1a508b;
      border-radius: 4px;
      color: #fff;
      font-size: 13px;
    }

    input[type="text"]::placeholder {
      color: #666;
    }

    .toolbar-section {
      display: flex;
      gap: 8px;
      align-items: center;
      padding: 0 8px;
      border-left: 1px solid #0f3460;
    }

    .toolbar-section:first-child {
      border-left: none;
      padding-left: 0;
    }

    .toolbar-label {
      font-size: 12px;
      color: #aaa;
    }

    .toggle-switch {
      position: relative;
      display: inline-block;
      width: 60px;
      height: 28px;
    }

    .toggle-switch input {
      opacity: 0;
      width: 0;
      height: 0;
    }

    .slider {
      position: absolute;
      cursor: pointer;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background-color: #0f3460;
      border: 1px solid #1a508b;
      transition: .3s;
      border-radius: 28px;
    }

    .slider:before {
      position: absolute;
      content: "";
      height: 20px;
      width: 20px;
      left: 4px;
      bottom: 3px;
      background-color: white;
      transition: .3s;
      border-radius: 50%;
    }

    input:checked + .slider {
      background-color: #e94560;
      border-color: #e94560;
    }

    input:checked + .slider:before {
      transform: translateX(32px);
    }

    .mode-label {
      font-size: 12px;
      color: #fff;
      font-weight: 500;
    }

    .feedback-link {
      color: #4ecdc4;
      text-decoration: none;
      font-size: 13px;
      padding: 8px 16px;
      background: #0f3460;
      border: 1px solid #1a508b;
      border-radius: 4px;
      transition: all 0.2s;
      display: inline-block;
    }

    .feedback-link:hover {
      background: #1a508b;
      color: #fff;
    }