html, body { 
    margin: 0; 
    padding: 0; 
    font-family: Arial, sans-serif; 
    font-size: 16px;
    overflow-x: hidden;
  }
  
  h1 { 
    text-align: center; 
    margin-top: 12px; 
    margin-bottom: 8px;
    font-size: 26px;
  }
  
  p { 
    text-align: center; 
    margin: 8px 0 12px;
    font-size: 15px;
  }
  
  .visualization-container {
    display: flex;
    justify-content: space-between;
    max-width: 1800px;
    margin: 0 auto;
    height: 80vh; 
    gap: 20px;
    padding: 0 15px;
  }
  
  .left-panel {
    display: flex;
    flex-direction: column;
    width: 48%;
  }
  
  .code-container {
    background-color: #f0f0f0;
    border-radius: 10px;
    padding: 15px;
    flex-grow: 1;
    overflow-y: auto;
    max-height: 52vh; 
    font-size: 16px;
    margin-bottom: 15px;
  }
  
  .explanation-result-container {
    background-color: #f0f0f0;
    border-radius: 10px;
    padding: 15px;
    display: flex;
    flex-direction: column;
  }
  
  .color-key {
    background-color: #f9f9f9;
    border-radius: 5px;
    padding: 10px;
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-items: center;
  }
  
  .key-item {
    display: flex;
    align-items: center;
    margin: 4px 12px;
  }
  
  .key-color {
    width: 18px;
    height: 18px;
    border-radius: 3px;
    margin-right: 8px;
  }
  
  .key-current {
    background-color: #fffde7;
    border: 2px solid #ffeb3b;
  }
  
  .key-found {
    background-color: #e8f5e9;
    border: 2px solid #4caf50;
  }
  
  .key-duplicate {
    background-color: #ffebee;
    border: 2px solid #f44336;
  }
  
  .key-description {
    font-size: 14px;
  }
  
  pre {
    margin: 0;
    background-color: #f0f0f0;
    width: 100%;
  }
  
  code {
    font-family: Consolas, "Courier New", monospace;
    white-space: pre;
    display: inline-block;
    min-width: 700px; 
  }
  
  #codeDisplay {
    width: 100%;
  }
  
  .line-number {
    color: #666;
    display: inline-block;
    min-width: 35px;
    font-size: 16px;
  }
  
  .code-line {
    display: block;
    width: 100%;
    position: relative;
    box-sizing: border-box;
    padding: 2px 0;
    font-size: 16px;
    line-height: 1.5;
  }
  
  .code-line.highlighted {
    background-color: #ffeb3b;
    width: 100%;
    display: block;
  }
  
  .visualization-panel {
    background-color: #f0f0f0;
    border-radius: 10px;
    padding: 15px;
    width: 48%;
    height: 75vh; 
    position: relative;
    display: flex;
    flex-direction: column;
  }
  
  .top-controls {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
  }
  
  .test-case-btns {
    display: flex;
    justify-content: center;
    gap: 6px;
    flex-wrap: wrap;
    flex: 1;
  }
  
  .test-btn {
    padding: 6px 8px;
    font-size: 14px;
    border: none;
    border-radius: 4px;
    background-color: #e0e0e0;
    cursor: pointer;
  }
  
  .test-btn:hover {
    background-color: #d0d0d0;
  }
  
  .test-btn.active {
    background-color: #2196f3;
    color: white;
  }
  
  .case-description {
    background-color: #e8e8e8;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 12px;
    font-size: 15px;
    text-align: center;
    line-height: 1.4;
  }
  
  .controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 12px;
  }
  
  #nextStep, #resetBtn {
    padding: 8px 15px;
    font-size: 16px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
  }
  
  #resetBtn {
    background-color: #f44336;
  }
  
  #nextStep:hover { 
    background-color: #45a049; 
  }
  
  #resetBtn:hover {
    background-color: #d32f2f;
  }
  
  #nextStep:disabled, #resetBtn:disabled { 
    background-color: #cccccc; 
    cursor: not-allowed; 
  }
  
  .visualization-area {
    display: flex;
    flex-direction: column;
    gap: 15px;
    overflow: hidden;
    padding: 15px;
    background-color: white;
    border-radius: 5px;
    margin-bottom: 12px;
    max-height: 55vh; 
    flex-grow: 1; 
    padding-bottom: 30px; 
  }
  
  .array-container, .map-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 15px 10px 28px 10px;
    background-color: #f9f9f9;
    border-radius: 5px;
    min-height: 80px;
    position: relative;
    margin-top: 22px;
  }
  
  .array-container::before, .map-container::before {
    content: "Array";
    position: absolute;
    top: -20px;
    left: 10px;
    font-weight: bold;
    font-size: 15px;
  }
  
  .map-container::before {
    content: "Map";
  }
  
  .array-item, .map-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 55px;
    height: 55px;
    background-color: white;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.3s ease;
  }
  
  .array-item {
    position: relative;
  }
  
  .array-item::after {
    content: attr(data-index);
    position: absolute;
    bottom: -20px;
    font-size: 13px;
    color: #666;
  }
  
  .map-item {
    width: 90px;
    height: 70px;
    margin: 4px;
  }
  
  .map-key {
    font-size: 15px;
    margin-bottom: 5px;
  }
  
  .map-value {
    font-size: 13px;
    color: #666;
  }
  
  .current {
    border-color: #ffeb3b;
    background-color: #fffde7;
    box-shadow: 0 0 5px #ffeb3b;
  }
  
  .found {
    border-color: #4caf50;
    background-color: #e8f5e9;
    box-shadow: 0 0 5px #4caf50;
  }
  
  .duplicate {
    border-color: #f44336;
    background-color: #ffebee;
    box-shadow: 0 0 5px #f44336;
  }
  
  .explanation {
    font-size: 15px;
    padding: 12px;
    background-color: #e8e8e8;
    border-radius: 5px;
    min-height: 60px;
    line-height: 1.4;
    margin-bottom: 12px;
    overflow-y: auto;
    max-height: 100px;
  }
  
  .result-container {
    padding: 12px;
    background-color: #e8e8e8;
    border-radius: 5px;
    text-align: center;
    font-weight: bold;
    font-size: 16px;
  }
  
  #result {
    color: #2196f3;
    font-size: 18px;
  }
  
  .success {
    color: #4caf50 !important;
  }
  
  .failure {
    color: #f44336 !important;
  }
  
  .color-key-label {
    font-weight: bold;
    margin-bottom: 5px;
    font-size: 15px;
  }