/* Default CSS */
/* Generated by the CoffeeCup HTML Editor - www.coffeecup.com */

    * { box-sizing: border-box; }
    body { 
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; 
      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
      margin: 0; 
      padding: 10px;
      color: #333;
      min-height: 100vh;
      -webkit-text-size-adjust: 100%;
    }
    .container { 
      max-width: 1400px; 
      margin: auto; 
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(10px);
      padding: 15px; 
      border-radius: 20px; 
      box-shadow: 0 20px 40px rgba(0,0,0,0.1);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      width: 100%;
    }
    @media (max-width: 1024px) {
      .container {
        grid-template-columns: 1fr;
        padding: 12px;
        gap: 15px;
      }
    }
    @media (max-width: 768px) {
      body { padding: 5px; }
      .container { 
        padding: 10px;
        gap: 12px;
        border-radius: 15px;
      }
    }
    @media (max-width: 480px) {
      body { padding: 2px; }
      .container { 
        padding: 8px;
        gap: 10px;
        border-radius: 10px;
      }
    }
    h1 { 
      text-align: center; 
      color: #2c3e50; 
      margin-bottom: 20px;
      grid-column: 1 / -1;
      font-size: 2.2em;
      font-weight: 300;
      text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
      word-wrap: break-word;
    }
    @media (max-width: 1024px) {
      h1 {
        font-size: 2em;
      }
    }
    @media (max-width: 768px) {
      h1 { 
        font-size: 1.8em;
        margin-bottom: 15px;
      }
    }
    @media (max-width: 480px) {
      h1 { 
        font-size: 1.5em;
        margin-bottom: 10px;
        line-height: 1.3;
      }
    }
    .accuracy-badge {
      background: linear-gradient(45deg, #27ae60, #2ecc71);
      color: white;
      padding: 8px 16px;
      border-radius: 20px;
      font-size: 1.1em;
      display: block;
      text-align: center;
      margin: 10px auto 20px;
      font-weight: 500;
      box-shadow: 0 4px 8px rgba(39, 174, 96, 0.3);
      grid-column: 1 / -1;
      max-width: 600px;
      width: 100%;
    }
    @media (max-width: 768px) {
      .accuracy-badge {
        font-size: 0.85em;
        padding: 6px 12px;
        margin: 5px auto 15px;
      }
    }
    @media (max-width: 480px) {
      .accuracy-badge {
        font-size: 0.8em;
        padding: 5px 10px;
        margin: 5px auto 10px;
      }
    }
    .form-section {
      grid-column: 1;
      background: #f8f9fa;
      padding: 20px;
      border-radius: 15px;
      box-shadow: 0 8px 16px rgba(0,0,0,0.1);
      width: 100%;
    }
    .visual-section {
      grid-column: 2;
      display: flex;
      flex-direction: column;
      width: 100%;
    }
    @media (max-width: 1024px) {
      .form-section, .visual-section { 
        grid-column: 1;
        padding: 15px;
      }
    }
    @media (max-width: 768px) {
      .form-section, .visual-section { 
        padding: 12px;
      }
    }
    @media (max-width: 480px) {
      .form-section, .visual-section { 
        padding: 10px;
      }
    }
    label { 
      font-weight: 600; 
      margin: 10px 0 5px; 
      display: block;
      color: #2c3e50;
      font-size: 0.95em;
    }
    @media (max-width: 768px) {
      label { 
        font-size: 0.92em;
        margin: 8px 0 4px;
      }
    }
    @media (max-width: 480px) {
      label { 
        font-size: 0.88em;
        margin: 6px 0 3px;
      }
    }
    select, input { 
      width: 100%; 
      padding: 12px 15px; 
      margin-bottom: 12px; 
      font-size: 14px; 
      border: 2px solid #e9ecef; 
      border-radius: 10px;
      background: #fff;
      transition: all 0.3s ease;
      -webkit-appearance: none;
    }
    @media (max-width: 1024px) {
      select, input {
        padding: 11px 14px;
      }
    }
    @media (max-width: 768px) {
      select, input { 
        padding: 10px 12px;
        font-size: 16px;
        margin-bottom: 10px;
      }
    }
    @media (max-width: 480px) {
      select, input { 
        padding: 8px 10px;
        margin-bottom: 8px;
        border-radius: 8px;
        font-size: 15px;
      }
    }
    select:focus, input:focus {
      border-color: #3498db;
      outline: none;
      box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    }
    input[readonly] {
      background: #ecf0f1;
      cursor: not-allowed;
    }
    fieldset { 
      border: 2px solid #e9ecef; 
      border-radius: 12px; 
      padding: 15px; 
      margin: 15px 0;
      background: linear-gradient(145deg, #ffffff, #f8f9fa);
      box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
    }
    @media (max-width: 1024px) {
      fieldset {
        padding: 14px;
      }
    }
    @media (max-width: 768px) {
      fieldset { 
        padding: 12px;
        margin: 12px 0;
        border-radius: 10px;
      }
    }
    @media (max-width: 480px) {
      fieldset { 
        padding: 8px;
        margin: 8px 0;
        border-radius: 8px;
      }
    }
    legend { 
      font-weight: 700; 
      color: #2c3e50;
      padding: 0 15px;
      font-size: 1.1em;
    }
    @media (max-width: 768px) {
      legend {
        font-size: 1.05em;
      }
    }
    @media (max-width: 480px) {
      legend { 
        font-size: 1em;
        padding: 0 10px;
      }
    }
    .row { 
      display: flex; 
      gap: 15px; 
      flex-wrap: wrap;
      margin-bottom: 12px;
    }
    .row > div { 
      flex: 1; 
      min-width: 200px;
    }
    .col-3 { flex: 0 0 30%; }
    .col-2 { flex: 0 0 45%; }
    @media (max-width: 1024px) {
      .row {
        gap: 12px;
      }
      .col-3, .col-2 {
        flex: 1 1 45%;
      }
    }
    @media (max-width: 768px) { 
      .row { 
        flex-direction: column;
        gap: 10px;
        margin-bottom: 10px;
      }
      .row > div { 
        min-width: 100%;
      }
      .col-3, .col-2 { 
        flex: 1;
        min-width: 100%;
      }
    }
    .button-group { 
      display: flex; 
      gap: 10px; 
      flex-wrap: wrap; 
      margin-top: 20px;
    }
    @media (max-width: 1024px) {
      .button-group {
        gap: 8px;
      }
    }
    @media (max-width: 768px) {
      .button-group { 
        gap: 8px;
        margin-top: 15px;
      }
    }
    @media (max-width: 480px) {
      .button-group { 
        flex-direction: column;
        gap: 6px;
      }
    }
    button {
      padding: 12px 18px;
      border: none;
      border-radius: 10px;
      font-size: 14px;
      cursor: pointer;
      transition: all 0.3s ease;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      min-height: 44px;
      flex: 1;
      min-width: 120px;
    }
    @media (max-width: 1024px) {
      button {
        padding: 12px 16px;
        font-size: 13px;
      }
    }
    @media (max-width: 768px) {
      button {
        padding: 12px 14px;
        font-size: 13px;
      }
    }
    @media (max-width: 480px) {
      button {
        padding: 12px;
        font-size: 12px;
        width: 100%;
        margin-bottom: 2px;
        min-width: auto;
      }
    }
    button[type=submit] {
      background: linear-gradient(45deg, #3498db, #2980b9);
      color: #fff;
      box-shadow: 0 4px 15px rgba(52, 152, 219, 0.4);
    }
    button[type=button] {
      background: linear-gradient(45deg, #95a5a6, #7f8c8d);
      color: #fff;
    }
    button:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    }
    button:active {
      transform: translateY(0);
    }
    #results {
      background: linear-gradient(145deg, #ecf0f1, #bdc3c7);
      border-left: 6px solid #27ae60;
      padding: 20px;
      margin-top: 20px;
      border-radius: 12px;
      box-shadow: 0 8px 16px rgba(0,0,0,0.1);
      width: 100%;
    }
    @media (max-width: 1024px) {
      #results {
        padding: 18px;
      }
    }
    @media (max-width: 768px) {
      #results {
        padding: 15px;
        margin-top: 15px;
      }
    }
    @media (max-width: 480px) {
      #results {
        padding: 10px;
        margin-top: 10px;
        border-radius: 8px;
      }
    }
    #results h3 {
      color: #27ae60;
      margin-top: 0;
      font-size: 1.4em;
      word-wrap: break-word;
    }
    @media (max-width: 768px) {
      #results h3 {
        font-size: 1.3em;
      }
    }
    @media (max-width: 480px) {
      #results h3 {
        font-size: 1.2em;
      }
    }
    #results .result-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
      gap: 12px;
      margin-top: 15px;
    }
    @media (max-width: 1024px) {
      #results .result-grid {
        gap: 10px;
      }
    }
    @media (max-width: 768px) {
      #results .result-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 10px;
      }
    }
    @media (max-width: 480px) {
      #results .result-grid {
        grid-template-columns: 1fr;
        gap: 8px;
      }
    }
    #results .result-item {
      background: #fff;
      padding: 12px;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }
    @media (max-width: 480px) {
      #results .result-item {
        padding: 10px;
        border-radius: 6px;
      }
    }
    #results .result-item strong {
      color: #2c3e50;
      display: block;
      margin-bottom: 5px;
      font-size: 0.9em;
    }
    #results .result-value {
      font-size: 1.1em;
      color: #27ae60;
      font-weight: 600;
      word-break: break-word;
    }
    @media (max-width: 480px) {
      #results .result-value {
        font-size: 1em;
      }
    }
    pre {
      background: #2c3e50;
      color: #ecf0f1;
      overflow-x: auto;
      font-size: 11px;
      padding: 15px;
      border-radius: 10px;
      margin-top: 15px;
      box-shadow: 0 8px 16px rgba(0,0,0,0.2);
      max-height: 250px;
      overflow-y: auto;
      width: 100%;
    }
    @media (max-width: 1024px) {
      pre {
        font-size: 10.5px;
        padding: 14px;
      }
    }
    @media (max-width: 768px) {
      pre {
        font-size: 10px;
        padding: 12px;
        max-height: 200px;
      }
    }
    @media (max-width: 480px) {
      pre {
        font-size: 9px;
        padding: 10px;
        max-height: 150px;
        border-radius: 6px;
      }
    }
    #visualization {
      position: relative;
      height: 400px;
      border: 2px solid #e9ecef;
      border-radius: 15px;
      overflow: hidden;
      background: linear-gradient(145deg, #ecf0f1, #bdc3c7);
      box-shadow: 0 8px 16px rgba(0,0,0,0.1);
      width: 100%;
    }
    @media (max-width: 1024px) {
      #visualization {
        height: 350px;
      }
    }
    @media (max-width: 768px) {
      #visualization {
        height: 300px;
        border-radius: 12px;
      }
    }
    @media (max-width: 480px) {
      #visualization {
        height: 250px;
        border-radius: 8px;
        border-width: 1px;
      }
    }
    #visualization canvas {
      display: block;
      width: 100% !important;
      height: 100% !important;
    }
    .info-panel {
      position: absolute;
      top: 10px;
      left: 10px;
      background: rgba(44, 62, 80, 0.9);
      color: white;
      padding: 10px;
      border-radius: 8px;
      font-size: 11px;
      z-index: 100;
      backdrop-filter: blur(5px);
      max-width: 150px;
    }
    @media (max-width: 1024px) {
      .info-panel {
        font-size: 10.5px;
        padding: 9px;
      }
    }
    @media (max-width: 768px) {
      .info-panel {
        font-size: 10px;
        padding: 8px;
        top: 8px;
        left: 8px;
      }
    }
    @media (max-width: 480px) {
      .info-panel {
        font-size: 9px;
        padding: 6px;
        top: 5px;
        left: 5px;
        border-radius: 6px;
        max-width: 130px;
      }
    }
    .flow-info {
      margin-top: 15px;
      padding: 15px;
      border-radius: 12px;
      background: linear-gradient(145deg, #3498db, #2980b9);
      color: white;
      box-shadow: 0 8px 16px rgba(52, 152, 219, 0.3);
      width: 100%;
    }
    @media (max-width: 1024px) {
      .flow-info {
        padding: 14px;
      }
    }
    @media (max-width: 768px) {
      .flow-info {
        margin-top: 12px;
        padding: 12px;
      }
    }
    @media (max-width: 480px) {
      .flow-info {
        margin-top: 8px;
        padding: 10px;
        border-radius: 8px;
      }
    }
    .flow-info h4 {
      margin-top: 0;
      font-size: 1.1em;
    }
    @media (max-width: 768px) {
      .flow-info h4 {
        font-size: 1.05em;
      }
    }
    @media (max-width: 480px) {
      .flow-info h4 {
        font-size: 1em;
      }
    }
    .validation-panel {
      background: linear-gradient(145deg, #e74c3c, #c0392b);
      color: white;
      padding: 12px;
      border-radius: 10px;
      margin-top: 12px;
      box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
      width: 100%;
    }
    @media (max-width: 1024px) {
      .validation-panel {
        padding: 11px;
      }
    }
    @media (max-width: 768px) {
      .validation-panel {
        padding: 10px;
      }
    }
    @media (max-width: 480px) {
      .validation-panel {
        padding: 8px;
        margin-top: 8px;
        border-radius: 6px;
      }
    }
    .validation-panel h5 {
      margin-top: 0;
      font-size: 1em;
    }
    @media (max-width: 768px) {
      .validation-panel h5 {
        font-size: 0.95em;
      }
    }
    @media (max-width: 480px) {
      .validation-panel h5 {
        font-size: 0.9em;
      }
    }
    .model-info {
      background: linear-gradient(145deg, #9b59b6, #8e44ad);
      color: white;
      padding: 12px;
      border-radius: 10px;
      margin-top: 12px;
      box-shadow: 0 4px 12px rgba(155, 89, 182, 0.3);
      width: 100%;
    }
    @media (max-width: 1024px) {
      .model-info {
        padding: 11px;
      }
    }
    @media (max-width: 768px) {
      .model-info {
        padding: 10px;
      }
    }
    @media (max-width: 480px) {
      .model-info {
        padding: 8px;
        margin-top: 8px;
        border-radius: 6px;
      }
    }
    .model-info h5 {
      margin-top: 0;
      font-size: 1em;
    }
    @media (max-width: 768px) {
      .model-info h5 {
        font-size: 0.95em;
      }
    }
    @media (max-width: 480px) {
      .model-info h5 {
        font-size: 0.9em;
      }
    }
    .warning {
      background: #f39c12;
      color: white;
      padding: 8px;
      border-radius: 6px;
      margin: 8px 0;
      font-size: 0.85em;
      width: 100%;
    }
    @media (max-width: 768px) {
      .warning {
        padding: 7px;
        font-size: 0.83em;
      }
    }
    @media (max-width: 480px) {
      .warning {
        padding: 6px;
        font-size: 0.8em;
      }
    }
    .tooltip {
      position: relative;
      cursor: help;
    }
    .tooltip::after {
      content: attr(data-tooltip);
      position: absolute;
      bottom: 125%;
      left: 50%;
      transform: translateX(-50%);
      background: #2c3e50;
      color: white;
      padding: 6px 10px;
      border-radius: 4px;
      font-size: 11px;
      white-space: nowrap;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s;
      z-index: 1000;
      max-width: 200px;
    }
    @media (max-width: 1024px) {
      .tooltip::after {
        font-size: 10.5px;
      }
    }
    @media (max-width: 768px) {
      .tooltip::after {
        font-size: 10px;
        padding: 4px 8px;
      }
    }
    @media (max-width: 480px) {
      .tooltip::after {
        display: none;
      }
    }
    .tooltip:hover::after {
      opacity: 1;
    }
    .calculated-field {
      background: linear-gradient(145deg, #e8f5e8, #d4edda);
      border-color: #27ae60;
      font-weight: 600;
      color: #155724;
    }
    .pressure-unit-selector {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    @media (max-width: 768px) {
      .pressure-unit-selector {
        gap: 6px;
      }
    }
    @media (max-width: 480px) {
      .pressure-unit-selector {
        flex-direction: column;
        gap: 4px;
      }
    }
    .pressure-unit-selector select {
      flex: 0 0 80px;
      margin-bottom: 0;
    }
    .pressure-unit-selector input {
      flex: 1;
      margin-bottom: 0;
    }
    @media (max-width: 480px) {
      .pressure-unit-selector select,
      .pressure-unit-selector input {
        flex: 1;
        width: 100%;
        margin-bottom: 4px;
      }
    }