/* ============================================================================
   PART 1: Core Styles, Layout, and Basic Components
   ============================================================================ */

   @import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&family=Outfit:wght@400;600;700&display=swap');

   * {
     margin: 0;
     padding: 0;
     box-sizing: border-box;
   }
   
   :root {
     --bg-main: #0a0e14;
     --bg-secondary: #14181f;
     --bg-tertiary: #1e242e;
     --accent-primary: #00cccc;
     --accent-secondary: #a71313;
     --accent-tertiary: #0099cc;
     --text-primary: #e6e9ef;
     --text-secondary: #8c92a3;
     --border-color: #2a3142;
     --success: #0f9b55;
     --warning: #adaf1b;
     --cyan: #00d4ff;
     --expand-btn: #9370db;
     --link-btn: #4682b4;
   }
   
   body {
     font-family: 'Outfit', sans-serif;
     background: var(--bg-main);
     color: var(--text-primary);
     min-height: 100vh;
     overflow-x: hidden;
   }
   
   #app {
     max-width: 100%;
     margin: 0;
     padding: 1rem;
     width: 100%;
   }
   
   h1 {
     font-size: 2.5rem;
     font-weight: 700;
     margin-bottom: 0.5rem;
     background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
     -webkit-background-clip: text;
     -webkit-text-fill-color: transparent;
     background-clip: text;
   }
   
   .subtitle {
     color: var(--text-secondary);
     margin-bottom: 2rem;
     font-size: 1.1rem;
   }
   
   .input-section {
     background: var(--bg-secondary);
     padding: 2rem;
     border-radius: 16px;
     border: 1px solid var(--border-color);
     margin-bottom: 2rem;
     width: calc(100% + 2rem);
     margin-left: -1rem;
     margin-right: -1rem;
   }
   
   .section-title {
     font-size: 1.3rem;
     font-weight: 600;
     margin-bottom: 1rem;
     color: var(--accent-primary);
   }
   
   textarea {
     width: 100%;
     min-height: 120px;
     background: var(--bg-tertiary);
     border: 1px solid var(--border-color);
     border-radius: 8px;
     padding: 1rem;
     color: var(--text-primary);
     font-family: 'JetBrains Mono', monospace;
     font-size: 0.95rem;
     resize: vertical;
     transition: border-color 0.3s ease;
   }
   
   textarea:focus {
     outline: none;
     border-color: var(--accent-primary);
   }
   
   .bitfield-condition-row {
     background: var(--bg-tertiary);
     border: 1px solid var(--border-color);
     border-radius: 8px;
     padding: 1rem;
     margin-bottom: 0; /* CHANGE FROM 0.75rem to 0 */
     display: grid;
     grid-template-columns: 140px 105px 82px 120px 55px 105px 82px 120px 66px;
     gap: 0.5rem;
     align-items: center;
     animation: slideIn 0.3s ease;
   }
   
   .bitfield-condition-row.read-only {
     opacity: 0.7;
     pointer-events: none;
   }
   
   .bitfield-condition-row.read-only button.remove-btn {
     pointer-events: all;
     opacity: 1;
   }
   
   .bitfield-headers {
     display: grid;
     grid-template-columns: 140px 105px 82px 120px 55px 105px 82px 120px 66px;
     gap: 0.5rem;
     margin-bottom: 0.5rem;
     padding: 0 1rem;
   }
   
   .bitfield-headers > div {
     font-size: 0.75rem;
     color: var(--text-secondary);
     font-weight: 600;
     text-transform: uppercase;
     letter-spacing: 0.5px;
     line-height: 1;
     text-align: center;
   }
   
   .bitfield-condition-row label {
     display: none;
   }
   
   .bitfield-condition-row > div.hidden {
     visibility: hidden;
     position: relative;
   }
   
   .bitfield-condition-row > div.hidden::after {
     content: '';
     position: absolute;
     top: 0;
     left: 0;
     right: 0;
     bottom: 0;
     pointer-events: none;
   }
   
   .bitfield-condition-row > div.hidden select,
   .bitfield-condition-row > div.hidden input {
     pointer-events: none;
   }
   
   .bitfield-condition-row > div {
     min-width: 0;
     display: flex;
     flex-direction: column;
     gap: 0.25rem;
     justify-content: center;
     align-items: stretch;
   }
   
   .bitfield-condition-row input,
   .bitfield-condition-row select {
     width: 100%;
     box-sizing: border-box;
   }
   
   .bitfield-condition-row select,
   .bitfield-condition-row input[type="text"] {
     height: 36px;
     margin: 0;
   }
   
   @keyframes slideIn {
     from {
       opacity: 0;
       transform: translateY(-10px);
     }
     to {
       opacity: 1;
       transform: translateY(0);
     }
   }
   
   select, input[type="text"], input[type="number"] {
     background: var(--bg-secondary);
     border: 1px solid var(--border-color);
     border-radius: 6px;
     padding: 0.5rem;
     color: var(--text-primary);
     font-family: 'JetBrains Mono', monospace;
     font-size: 0.9rem;
     transition: all 0.3s ease;
   }
   
   select option {
     background: var(--bg-secondary);
     color: var(--text-primary);
   }
   
   select:focus, input:focus {
     outline: none;
     border-color: var(--accent-primary);
     box-shadow: 0 0 0 3px rgba(0, 204, 204, 0.1);
   }
   
   select {
     cursor: pointer;
   }
   
   /* LINK GROUP STYLING */
   .link-group-container {
     border-radius: 8px;
     margin-bottom: 0.5rem;
     overflow: hidden;
   }
   
   .link-group-container.forest-green {
     background: linear-gradient(135deg, rgba(34, 139, 34, 0.1) 0%, rgba(34, 139, 34, 0.05) 100%);
     border: 2px solid rgba(34, 139, 34, 0.3);
   }
   
   .link-group-container.maroon {
     background: linear-gradient(135deg, rgba(128, 0, 0, 0.1) 0%, rgba(128, 0, 0, 0.05) 100%);
     border: 2px solid rgba(128, 0, 0, 0.3);
   }
   
   .link-group-container .bitfield-condition-row {
     background: transparent;
     border-bottom: 1px solid rgba(255, 255, 255, 0.1);
   }
   
   .link-group-container .bitfield-condition-row:last-of-type {
     border-bottom: none;
   }
   
   .link-group-container .bitfield-copy-row {
     background: transparent;
     border-top: 1px solid rgba(255, 255, 255, 0.1);
   }
   
   .bitfield-copy-row {
     display: flex;
     justify-content: flex-start;
     align-items: center;
     gap: 0.5rem;
     padding: 0.5rem;
     margin-bottom: 0.75rem; /* ADD THIS LINE */
   }
   
   .button-group {
     display: flex;
     gap: 1rem;
     margin-top: 1.5rem;
   }
   /* ============================================================================
      PART 2: Buttons, Expansion Panels, Custom Panels, and Animations
      ============================================================================ */
   
   /* BUTTON STANDARDS */
   /* Green = Confirm/Generate */
   .generate-btn,
   .confirm-btn {
     background: var(--success);
     border: none;
     color: var(--bg-main);
     padding: 1rem 2rem;
     border-radius: 8px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 700;
     font-size: 1.1rem;
     transition: all 0.3s ease;
     box-shadow: 0 4px 20px rgba(0, 204, 102, 0.3);
     text-transform: uppercase;
     letter-spacing: 1px;
   }
   
   .generate-btn:hover,
   .confirm-btn:hover {
     transform: translateY(-3px);
     box-shadow: 0 6px 25px rgba(0, 204, 102, 0.4);
   }
   
   /* Red = Delete/Clear/Cancel */
   .remove-btn,
   .clear-btn,
   .cancel-btn {
     background: var(--accent-secondary);
     border: none;
     color: white;
     border-radius: 6px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 600;
     transition: all 0.3s ease;
   }
   
   .remove-btn {
     padding: 0.375rem 0.75rem;
     font-size: 1rem;
     min-width: 50px;
   }
   
   .clear-btn,
   .cancel-btn {
     padding: 0.75rem 1.5rem;
     font-size: 1rem;
   }
   
   .remove-btn:hover,
   .clear-btn:hover,
   .cancel-btn:hover {
     background: #cc0000;
     transform: scale(1.05);
   }
   
   /* Grey/Blue = Toggle/Secondary actions */
   .secondary-btn {
     background: var(--bg-tertiary);
     border: 1px solid var(--border-color);
     color: var(--text-primary);
     padding: 0.75rem 1.5rem;
     border-radius: 8px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 600;
     font-size: 1rem;
     transition: all 0.3s ease;
   }
   
   .secondary-btn:hover {
     background: var(--bg-secondary);
     border-color: var(--accent-primary);
   }
   
   .secondary-btn:active {
     transform: scale(0.98);
   }
   
   .toggle-btn {
     background: var(--bg-tertiary);
     border: 1px solid var(--border-color);
     color: var(--text-primary);
     padding: 0.75rem 1.5rem;
     border-radius: 8px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 600;
     font-size: 1rem;
     transition: all 0.3s ease;
   }
   
   .toggle-btn:hover {
     background: var(--bg-secondary);
     border-color: var(--accent-primary);
   }
   
   .toggle-btn.active {
     background: var(--accent-primary);
     border-color: var(--accent-primary);
     color: var(--bg-main);
   }
   
   .toggle-btn.active:hover {
     background: var(--accent-tertiary);
     border-color: var(--accent-tertiary);
   }
   
   .toggle-btn:active {
     transform: scale(0.98);
   }
   
   /* Purple = Expand button */
   .expand-btn {
     background: var(--expand-btn);
     border: 2px solid var(--expand-btn);
     color: white;
     padding: 0.375rem 0.75rem;
     border-radius: 6px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 700;
     font-size: 0.85rem;
     transition: all 0.3s ease;
     min-width: 80px;
     text-transform: uppercase;
     letter-spacing: 0.5px;
   }
   
   .expand-btn:hover:not(:disabled) {
     background: #8a5dd4;
     border-color: #8a5dd4;
     transform: translateY(-2px);
     box-shadow: 0 4px 12px rgba(147, 112, 219, 0.4);
   }
   
   .expand-btn:disabled {
     opacity: 0.4;
     cursor: not-allowed;
   }
   
   /* Steel Blue = Link button */
   .link-btn {
     background: var(--link-btn);
     border: 2px solid var(--link-btn);
     color: white;
     padding: 0.375rem 0.75rem;
     border-radius: 6px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 700;
     font-size: 0.85rem;
     transition: all 0.3s ease;
     min-width: 90px;
     text-transform: uppercase;
     letter-spacing: 0.5px;
   }
   
   .link-btn:hover:not(:disabled) {
     background: #3c6fa3;
     border-color: #3c6fa3;
     transform: translateY(-2px);
     box-shadow: 0 4px 12px rgba(70, 130, 180, 0.4);
   }
   
   .link-btn:disabled {
     background: var(--bg-tertiary);
     border-color: var(--bg-tertiary);
     color: var(--text-secondary);
     cursor: not-allowed;
     opacity: 0.5;
   }
   
   /* Cyan = Add button */
   .add-condition-btn-small,
   .add-line-btn {
     background: var(--cyan);
     border: 2px solid var(--cyan);
     color: var(--bg-main);
     border-radius: 6px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 700;
     transition: all 0.3s ease;
     text-transform: uppercase;
     letter-spacing: 0.5px;
   }
   
   .add-condition-btn-small {
     padding: 0.5rem 1rem;
     font-size: 0.875rem;
     margin-top: 1rem;
     box-shadow: 0 2px 10px rgba(0, 212, 255, 0.3);
   }
   
   .add-line-btn {
     padding: 0.375rem 0.75rem;
     font-size: 0.85rem;
     min-width: 70px;
   }
   
   .add-condition-btn-small:hover,
   .add-line-btn:hover {
     background: #00bde5;
     border-color: #00bde5;
     transform: translateY(-2px);
     box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
   }
   
   /* Orange = Copy button */
   .copy-condition-btn,
   .copy-btn {
     background: var(--warning);
     border: 2px solid var(--warning);
     color: var(--bg-main);
     border-radius: 6px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 700;
     transition: all 0.3s ease;
     text-transform: uppercase;
     letter-spacing: 0.5px;
   }
   
   .copy-condition-btn {
     padding: 0.375rem 0.75rem;
     font-size: 0.85rem;
     min-width: 70px;
   }
   
   .copy-btn {
     padding: 0.75rem 1.5rem;
     font-size: 1rem;
   }
   
   .copy-condition-btn:hover,
   .copy-btn:hover {
     background: #e68a29;
     border-color: #e68a29;
     transform: translateY(-2px);
     box-shadow: 0 4px 15px rgba(255, 153, 51, 0.4);
   }
   
   /* EXPANSION INTERFACE */
   .expansion-badge {
     background: var(--success);
     color: var(--bg-main);
     padding: 0.25rem 0.5rem;
     border-radius: 4px;
     font-size: 0.8rem;
     font-weight: 600;
     cursor: pointer;
     transition: all 0.3s ease;
     align-self: center;
     white-space: nowrap;
   }
   
   .expansion-badge:hover {
     transform: scale(1.05);
     box-shadow: 0 2px 8px rgba(0, 255, 157, 0.3);
   }
   
   .expansion-interface {
     background: var(--bg-main);
     border: 2px solid var(--accent-primary);
     border-radius: 8px;
     padding: 1.5rem;
     margin-top: 0.5rem;
     margin-bottom: 1rem;
   }
   
   .expansion-header {
     font-weight: 600;
     margin-bottom: 1rem;
     padding-bottom: 0.5rem;
     border-bottom: 1px solid var(--border-color);
     color: var(--accent-primary);
   }
   
   .expansion-tabs {
     display: flex;
     gap: 0.5rem;
     margin-bottom: 1rem;
   }
   
   .tab-btn {
     background: var(--bg-tertiary);
     border: 1px solid var(--border-color);
     color: var(--text-secondary);
     padding: 0.5rem 1rem;
     border-radius: 6px;
     cursor: pointer;
     font-family: 'Outfit', sans-serif;
     font-weight: 600;
     transition: all 0.3s ease;
   }
   
   .tab-btn:disabled {
     opacity: 0.4;
     cursor: not-allowed;
   }
   
   .tab-btn.active {
     background: var(--accent-tertiary);
     color: var(--text-primary);
     border-color: var(--accent-tertiary);
   }
   
   .tab-btn:hover:not(:disabled):not(.active) {
     border-color: var(--accent-primary);
   }
   
   .expansion-body {
     display: flex;
     flex-direction: column;
     gap: 0.75rem;
   }
   
   .expansion-row {
     display: flex;
     align-items: center;
     gap: 0.5rem;
     padding: 0.5rem;
     background: var(--bg-tertiary);
     border-radius: 6px;
   }
   
   .expansion-row-label {
     font-family: 'JetBrains Mono', monospace;
     color: var(--text-secondary);
     min-width: 150px;
     font-weight: 600;
     font-size: 0.9rem;
   }
   
   .expansion-footer {
     display: flex;
     gap: 1rem;
     margin-top: 1.5rem;
     justify-content: flex-start;
   }
   
   
   .expansion-divider {
     height: 1px;
     background: var(--border-color);
     margin: 1.5rem 0;
   }
   
   /* NEW EXPANSION SYSTEM STYLES */
   .expansion-line-config {
     background: var(--bg-secondary);
     border: 1px solid var(--border-color);
     border-radius: 8px;
     padding: 1rem;
     margin-bottom: 1rem;
   }
   
   .expansion-line-header {
     font-family: 'JetBrains Mono', monospace;
     font-size: 0.9rem;
     color: var(--accent-primary);
     font-weight: 600;
     margin-bottom: 0.75rem;
     padding-bottom: 0.5rem;
     border-bottom: 1px solid var(--border-color);
   }
   
   .customization-badge {
     background: var(--success);
     color: var(--bg-main);
     padding: 0.5rem 1rem;
     border-radius: 6px;
     font-size: 0.85rem;
     font-weight: 600;
     margin-top: 0.5rem;
     display: inline-block;
   }
   
   .custom-limit-display {
     background: var(--bg-tertiary);
     border: 1px solid var(--border-color);
     border-radius: 6px;
     padding: 0.75rem 1rem;
     margin-bottom: 1rem;
     font-family: 'JetBrains Mono', monospace;
     font-size: 0.95rem;
     color: var(--text-primary);
   }
   
   .custom-limit-display span {
     color: var(--accent-primary);
     font-weight: 700;
     font-size: 1.1rem;
   }
   
   .custom-warning {
     background: rgba(255, 51, 51, 0.1);
     border: 2px solid var(--accent-secondary);
     border-radius: 6px;
     padding: 0.75rem 1rem;
     margin-bottom: 1rem;
     font-weight: 600;
     color: var(--accent-secondary);
     opacity: 0;
     max-height: 0;
     overflow: hidden;
     transition: all 0.3s ease;
   }
   
   .custom-warning.show {
     opacity: 1;
     max-height: 100px;
   }
   
   /* Shake animation for warnings */
  @keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
  }
  
  /* Reduced shake animation for warnings */
  @keyframes shake-reduced {
    0%, 100% { transform: translateX(0); }
    25%, 75% { transform: translateX(-2px); }
    50% { transform: translateX(2px); }
  }
  
  .expansion-interface.shake {
    animation: shake 0.5s ease;
  }
  
  .expansion-interface.shake-reduced {
    animation: shake-reduced 0.2s ease;
  }
   
   .expansion-row input[type="number"],
   .expansion-row input[type="text"] {
     max-width: 150px;
   }
   
   .expansion-row .secondary-btn,
   .expansion-row .cancel-btn {
     margin-left: 0.5rem;
   }
   
   .expansion-line-config .expansion-tabs {
     margin-bottom: 0.75rem;
   }
   
   .expansion-line-config .expansion-row {
     margin-bottom: 0;
   }
   
   .expansion-line-config .tab-btn {
     min-width: 80px;
   }
   
   .expansion-footer .tab-btn {
     min-width: 120px;
   }
   
   .expansion-footer .expansion-tabs {
     margin-left: auto;
   }
   
   /* CUSTOM EXPANSION HEX EDITOR STYLES */
   .bit-btn {
     background: var(--bg-secondary);
     border: 1px solid var(--border-color);
     color: var(--text-primary);
     padding: 0.4rem 0.6rem;
     border-radius: 4px;
     cursor: pointer;
     font-family: 'JetBrains Mono', monospace;
     font-size: 0.85rem;
     min-width: 40px;
     transition: all 0.2s ease;
   }
   
   .bit-btn:hover {
     border-color: var(--accent-primary);
   }
   
   .bit-btn.active {
     background: var(--accent-tertiary);
     color: var(--text-primary);
     border-color: var(--accent-tertiary);
     font-weight: 700;
   }
   
   .bit-btn.skip-btn {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-secondary);
    min-width: 60px;
    font-size: 0.8rem;
  }
  
  .bit-btn.skip-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
  }
   
   .custom-expansion-addr {
     font-family: 'JetBrains Mono', monospace;
     color: var(--accent-primary);
     font-weight: 700;
     font-size: 0.9rem;
     min-width: 70px;
     display: inline-block;
     margin-right: 0.5rem;
   }
   
   /* BitCount layout */
   .custom-expansion-bitcount-row {
     display: flex;
     align-items: center;
     gap: 0.25rem;
     padding: 0.5rem;
     background: var(--bg-tertiary);
     border-radius: 6px;
     margin-bottom: 0.5rem;
   }
   
   .custom-expansion-bitcount-column {
     display: flex;
     flex-direction: column;
     align-items: center;
     gap: 0.15rem;
   }
   
   .custom-expansion-bitcount-column .bit-btn {
     min-width: 32px;
     padding: 0.25rem 0.35rem;
     font-size: 0.7rem;
   }
   
   .custom-expansion-byte-label {
     font-family: 'JetBrains Mono', monospace;
     font-size: 0.65rem;
     color: var(--text-secondary);
     text-align: center;
   }
   
   /* Regular bit type layout */
   .custom-expansion-bit-row {
     display: flex;
     flex-direction: column;
     gap: 0.25rem;
     padding: 0.5rem;
     background: var(--bg-tertiary);
     border-radius: 6px;
     margin-bottom: 0.5rem;
   }
   
   .custom-expansion-bit-byte-row {
     display: flex;
     align-items: center;
     gap: 0.5rem;
     padding: 0.25rem;
     background: var(--bg-secondary);
     border-radius: 4px;
     margin-bottom: 0.25rem;
   }
   
   .custom-expansion-full-addr {
     font-family: 'JetBrains Mono', monospace;
     color: var(--accent-primary);
     font-weight: 700;
     font-size: 0.9rem;
     min-width: 80px;
     display: inline-block;
   }
   
   .custom-expansion-bit-byte-row .bit-btn.skip-btn {
     min-width: 50px;
     font-size: 0.75rem;
   }
   
   .custom-expansion-bit-byte-row .bit-btn:not(.skip-btn) {
     min-width: 70px;
     font-size: 0.75rem;
   }
   
   .bit-btn-small {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    min-width: 40px;
    min-height: 32px;
    transition: all 0.2s ease;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
  }
   
   .bit-btn-small:hover {
     border-color: var(--accent-primary);
   }
   
   .bit-btn-small.active {
     background: var(--accent-tertiary);
     color: var(--text-primary);
     border-color: var(--accent-tertiary);
     font-weight: 700;
   }
   
   /* Upper4/Lower4 layout */
   .custom-expansion-4bit-row {
     display: flex;
     align-items: flex-start;
     gap: 0.5rem;
     padding: 0.5rem;
     background: var(--bg-tertiary);
     border-radius: 6px;
     margin-bottom: 0.5rem;
   }
   
   .custom-expansion-4bit-grid {
     display: flex;
     flex-direction: column;
     gap: 0.15rem;
     flex: 1;
   }
   
   .custom-expansion-4bit-all-row {
     display: flex;
     align-items: center;
     gap: 0.25rem;
   }
   
   .custom-expansion-4bit-label-row {
     display: flex;
     align-items: center;
     gap: 0.25rem;
   }
   
   .custom-expansion-4bit-label-row > span:first-child {
     min-width: 60px;
   }
   
   .custom-expansion-byte-label-inline {
     font-family: 'JetBrains Mono', monospace;
     font-size: 0.65rem;
     color: var(--text-secondary);
     text-align: center;
     min-width: 28px;
     display: inline-block;
   }
   
   .bit-btn-4bit {
     background: var(--bg-secondary);
     border: 1px solid var(--border-color);
     color: var(--text-primary);
     padding: 0.2rem 0.3rem;
     border-radius: 3px;
     cursor: pointer;
     font-family: 'JetBrains Mono', monospace;
     font-size: 0.7rem;
     min-width: 28px;
     transition: all 0.2s ease;
     text-align: center;
   }
   
   .bit-btn-4bit:hover {
     border-color: var(--accent-primary);
   }
   
   .bit-btn-4bit.active {
     background: var(--accent-tertiary);
     color: var(--text-primary);
     border-color: var(--accent-tertiary);
     font-weight: 700;
   }
   
   .custom-expansion-4bit-all-row > .bit-btn {
     min-width: 60px;
   }
   
   /* Standard types (8-bit, 16-bit, 4-byte-aligned) */
   .custom-expansion-standard-row {
     display: flex;
     align-items: center;
     gap: 0.25rem;
     padding: 0.5rem;
     background: var(--bg-tertiary);
     border-radius: 6px;
     margin-bottom: 0.5rem;
     flex-wrap: wrap;
   }
   
   .custom-expansion-standard-row .bit-btn {
     min-width: 45px;
     padding: 0.3rem 0.4rem;
     font-size: 0.75rem;
   }
   
   .custom-expansion-standard-row > .bit-btn:nth-child(2) {
     /* "All" button */
     min-width: 50px;
   }
   
   .custom-row {
     flex-wrap: wrap;
   }
   
   .preview-field {
     font-family: 'JetBrains Mono', monospace;
     color: var(--accent-primary);
     font-weight: 600;
     min-width: 80px;
   }
   
   .custom-expansion .expansion-row {
     align-items: center;
   }
   
   /* Type dropdown validation flash */
   .type-validation-flash {
     animation: typeFlash 1s ease-out;
   }
   
   @keyframes typeFlash {
     0% {
       background-color: #ff3333 !important;
       color: white !important;
       box-shadow: 0 0 10px #ff3333 !important;
       transform: scale(1.02);
     }
     100% {
       background-color: var(--bg-primary) !important;
       color: var(--text-primary) !important;
       box-shadow: none !important;
       transform: scale(1);
     }
   }
   
   /* Delta/Mem Check checkbox styling */
   .expansion-row input[type="checkbox"] {
     width: 16px;
     height: 16px;
     accent-color: var(--accent-primary);
     cursor: pointer;
   }
   
   .expansion-row input[type="checkbox"]:disabled {
     accent-color: var(--text-secondary);
     cursor: not-allowed;
     opacity: 0.6;
   }
   
   .expansion-row label {
     cursor: pointer;
     user-select: none;
     color: var(--text-primary);
     font-size: 0.9rem;
   }
   
   .expansion-row label:has(input[type="checkbox"]:disabled) {
     cursor: not-allowed;
     color: var(--text-secondary);
   }