estimation.njk

---
layout: base.njk
pagination:
  data: pseo
  size: 1
  alias: calc
permalink: "estimation/{{ calc.slug }}/"
eleventyComputed:
  title: "How much {{ calc.formattedMat }} for a {{ calc.formattedStory }} {{ calc.formattedPlot }}?"
  description: "Calculate the exact {{ calc.formattedMat }} requirements for a {{ calc.formattedStory }} {{ calc.formattedPlot }} project. Estimated requirement: {{ calc.amount }} {{ calc.unit }}."
---

<main class="site-wrapper">
  
  <!-- JSON-LD Schema Injection -->
  <script type="application/ld+json">
  {
    "@context": "https://schema.org",
    "@type": "SoftwareApplication",
    "name": "{{ calc.formattedPlot }} {{ calc.formattedStory }} {{ calc.formattedMat }} Calculator",
    "applicationCategory": "CalculatorApplication",
    "operatingSystem": "All",
    "offers": {
      "@type": "Offer",
      "price": "0",
      "priceCurrency": "USD"
    },
    "description": "Estimated requirement of {{ calc.formattedMat | lower }} is {{ calc.amount }} {{ calc.unit }}."
  }
  </script>

  <!-- 1. Dynamic Hero & Live Counter -->
  <section class="page-hero" style="text-align: center; margin-bottom: 40px;">
    <h1 style="font-size: 2.5rem; line-height: 1.2; margin-bottom: 24px; text-transform: capitalize;">
      How much {{ calc.formattedMat | lower }} is required for a {{ calc.formattedStory | lower }} {{ calc.formattedPlot | lower }} project?
    </h1>
    
    <div style="background-color: var(--accent); color: #fff; padding: 32px; border-radius: 12px; display: inline-block; box-shadow: 0 10px 25px rgba(0,0,0,0.1); margin-top: 16px;">
      <p style="text-transform: uppercase; letter-spacing: 1.5px; font-weight: 600; opacity: 0.9; margin-bottom: 8px; font-size: 14px;">Estimated Requirement</p>
      <p style="font-size: 4rem; font-weight: 900; line-height: 1; margin: 0;">
        {{ calc.amountFormatted }} <span style="font-size: 1.5rem; opacity: 0.9;">{{ calc.unit }}</span>
      </p>
      <p style="margin-top: 16px; font-size: 13px; opacity: 0.85;">Based on standard engineering area of {{ calc.areaSqFtFormatted }} sq ft.</p>
    </div>
  </section>

  <!-- 2. Interactive Variation Slider / Selector -->
  <section style="background: var(--paper2); border: 1px solid var(--rule); padding: 32px; border-radius: 12px; margin: 40px 0;">
    <h2 style="margin-top: 0; margin-bottom: 24px; font-size: 1.5rem;">Adjust Your Parameters</h2>
    
    <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px;">
      
      <!-- Plot Size Dropdown -->
      <div>
        <label style="display: block; margin-bottom: 8px; font-weight: bold; font-size: 14px;">Plot Size</label>
        <select id="select-plot" style="width: 100%; padding: 12px; border-radius: 6px; border: 1px solid var(--rule2); background: var(--paper); color: var(--ink); font-size: 16px;">
          {% for category, sizes in calc.plotSizesCategorized %}
            <optgroup label="{{ category }}">
              {% for size in sizes %}
                <option value="{{ size }}" {% if size == calc.plotSize %}selected{% endif %}>{{ size | replace("-", " ") | upper }}</option>
              {% endfor %}
            </optgroup>
          {% endfor %}
        </select>
      </div>

      <!-- Story Dropdown -->
      <div>
        <label style="display: block; margin-bottom: 8px; font-weight: bold; font-size: 14px;">Story Depth</label>
        <select id="select-story" style="width: 100%; padding: 12px; border-radius: 6px; border: 1px solid var(--rule2); background: var(--paper); color: var(--ink); font-size: 16px;">
          {% for story in calc.allStories %}
            <option value="{{ story }}" {% if story == calc.story %}selected{% endif %}>{{ story | replace("-", " ") | upper }}</option>
          {% endfor %}
        </select>
      </div>

      <!-- Material Dropdown -->
      <div>
        <label style="display: block; margin-bottom: 8px; font-weight: bold; font-size: 14px;">Material Focus</label>
        <select id="select-mat" style="width: 100%; padding: 12px; border-radius: 6px; border: 1px solid var(--rule2); background: var(--paper); color: var(--ink); font-size: 16px;">
          {% for mat in calc.allMaterials %}
            <option value="{{ mat }}" {% if mat == calc.material %}selected{% endif %}>{{ mat | replace("-", " ") | upper }}</option>
          {% endfor %}
        </select>
      </div>
      
    </div>
  </section>

  <script>
    // Vanilla JS handler for redirecting dynamic pages
    document.addEventListener('DOMContentLoaded', function() {
      const plotSelect = document.getElementById('select-plot');
      const storySelect = document.getElementById('select-story');
      const matSelect = document.getElementById('select-mat');

      function updateRoute() {
        const plot = plotSelect.value;
        const story = storySelect.value;
        const mat = matSelect.value;
        window.location.href = `/estimation/${plot}-${story}-${mat}-calculator/`;
      }

      plotSelect.addEventListener('change', updateRoute);
      storySelect.addEventListener('change', updateRoute);
      matSelect.addEventListener('change', updateRoute);
    });
  </script>

  <!-- Internal Linking Context -->
  <section style="margin: 40px 0;">
    <h3 style="margin-bottom: 16px; font-size: 1.25rem;">Compare with other sizes:</h3>
    <ul style="list-style: none; padding: 0; display: flex; gap: 16px; flex-wrap: wrap;">
      {% for link in calc.relatedLinks %}
        <li><a href="{{ link.url }}" style="display: inline-block; padding: 10px 16px; background: var(--paper2); border: 1px solid var(--rule); border-radius: 6px; text-decoration: none; font-weight: 500; color: #cbd5e1;">{{ link.name }}</a></li>
      {% endfor %}
    </ul>
  </section>

</main>