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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Google Apps Script Generator</title>
    <link href="https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css" rel="stylesheet">
    <style>
        /* Base body padding for fixed header */
        body {
            padding-top: 5rem; /* Start with a base padding */
        }
        /* Hero section base style */
        #heroSection {
            display: flex; /* Use flex by default */
            transition: opacity 0.3s ease-out, max-height 0.3s ease-out; /* Add transition */
            opacity: 1;
            max-height: 500px; /* Estimate max height */
            overflow: hidden;
        }
        /* Style to hide hero section smoothly */
        #heroSection.hidden-section {
             opacity: 0;
             max-height: 0;
             padding-top: 0;
             padding-bottom: 0;
             margin-bottom: 0;
             /* display: none; /* Re-add if transition is not desired or causes layout shifts */
        }
        /* Progress steps base style */
        #progressSteps {
            display: flex; /* Use flex by default */
             transition: opacity 0.3s ease-out, max-height 0.3s ease-out; /* Add transition */
             opacity: 1;
             max-height: 100px; /* Estimate max height */
             overflow: hidden;
        }
         /* Style to hide steps smoothly */
        #progressSteps.hidden-section {
             opacity: 0;
             max-height: 0;
             margin-bottom: 0;
             /* display: none; */
        }
        .code-block {
            font-family: 'Courier New', Courier, monospace;
            white-space: pre-wrap;
            background: #000000;
            color: #e2e8f0;
            padding: 1rem;
            border-radius: 0.5rem;
            height: calc(80vh - 22rem); /* Adjusted height slightly */
            min-height: 150px; /* Adjusted min-height */
            overflow-y: auto;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .section { display: none; }
        .section.active { display: block; }
        .input-field {
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            background: rgba(255, 255, 255, 0.25);
            color: #1e293b;
            border: 1px solid rgba(255, 255, 255, 0.4);
            width: 100%;
            padding: 0.65rem 0.75rem; /* Adjusted padding slightly */
            border-radius: 0.375rem; /* Standard Tailwind rounded-md */
        }
        .input-field::placeholder { color: #4b5563; opacity: 1; }
        .input-field:focus {
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.4);
            background: rgba(255, 255, 255, 0.35);
        }
        .btn {
            transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.1s ease;
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 0.75rem 1.25rem; /* Default padding */
            border-radius: 0.375rem; /* Standard Tailwind rounded-md */
            font-weight: 500; /* Medium weight */
            text-align: center;
             box-shadow: 0 1px 2px rgba(0,0,0,0.05);
        }
         .btn:hover {
             transform: translateY(-1px);
              box-shadow: 0 2px 4px rgba(0,0,0,0.1);
         }
        .btn:active { transform: translateY(0);  box-shadow: 0 1px 2px rgba(0,0,0,0.05); }
        /* Specific Button Colors */
        .btn-blue { background: #2563eb; color: white; } .btn-blue:hover { background: #1d4ed8; }
        .btn-green { background: #16a34a; color: white; } .btn-green:hover { background: #15803d; }
        .btn-gray-dark { background: #374151; color: white; } .btn-gray-dark:hover { background: #1f2937; }
        .btn-gray { background: #4b5563; color: white; } .btn-gray:hover { background: #374151; }
        .btn-red { background: #dc2626; color: white; } .btn-red:hover { background: #b91c1c; }
        .btn-light { background: #e5e7eb; color: #1f2937; } .btn-light:hover { background: #d1d5db; }
        .btn-light-active { background: #dbeafe; color: #1e40af; } /* For active cURL button */
        /* Small icon button style (e.g., delete, copy) */
        .btn-icon {
            padding: 0.5rem; /* Smaller padding for icons */
             flex-shrink: 0; /* Prevent shrinking */
             line-height: 1; /* Ensure icon aligns well */
        }
         .btn-icon svg {
             width: 1.25rem; /* w-5 */
             height: 1.25rem; /* h-5 */
         }
        .step-indicator {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(5px);
            border: 1px solid rgba(255, 255, 255, 0.2);
             width: 2.5rem; /* w-10 */
             height: 2.5rem; /* h-10 */
             border-radius: 9999px; /* rounded-full */
             display: flex;
             align-items: center;
             justify-content: center;
             font-weight: 600; /* semibold */
             color: #4b5563; /* gray-600 text */
             transition: all 0.3s ease-in-out;
        }
        .step-indicator.active {
            background: rgba(59, 130, 246, 0.9);
            color: white;
            box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
        }
        .step-indicator.completed { /* Style for completed steps */
             background: rgba(22, 163, 74, 0.8); /* Green */
             color: white;
        }
        .glass-container {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
            border-radius: 0.75rem; /* rounded-xl */
            padding: 1.5rem; /* Default padding */
        }
        /* --- Mobile-specific styles --- */
        @media (max-width: 640px) {
            body {
                padding-top: 4.5rem; /* Adjust for potentially smaller header */
                padding-left: 0.5rem;
                padding-right: 0.5rem;
            }
            .glass-container {
                padding: 1rem; /* Reduce padding slightly */
            }
            .code-block {
                height: calc(70vh - 15rem); /* Adjust height calc for mobile */
                padding: 0.75rem;
                 min-height: 120px;
            }
             /* Input row layout */
            .column-input-row {
                 flex-direction: row; /* Keep input and button in a row */
                 align-items: center;
                 gap: 0.75rem; /* space-x-3 equivalent */
             }
             .column-input-row input {
                  flex-grow: 1; /* Allow input to take space */
             }
             .column-input-row .btn-icon {
                 /* Delete button already has flex-shrink-0 */
             }
             /* Button container for main actions */
            .button-container-mobile-stack {
                display: flex;
                flex-direction: column;
                width: 100%;
                gap: 0.75rem; /* space-y-3 */
            }
             .button-container-mobile-stack .btn {
                 width: 100%; /* Make buttons full width */
             }
             /* Make specific containers stack buttons */
             #columns .button-container,
             #code .button-container,
             #howto .button-container {
                  flex-direction: column;
                  gap: 0.75rem;
             }
              #columns .button-container .btn,
              #code .button-container .btn,
              #howto .button-container .btn {
                  width: 100%; /* Ensure buttons inside stack full width */
                  margin-left: 0 !important; /* Override potential sm: space-x */
             }
            .step-indicator {
                width: 2.25rem; height: 2.25rem; /* Slightly smaller */
                font-size: 0.875rem; /* text-sm */
            }
             /* Adjust heading sizes for mobile */
            .text-4xl { font-size: 1.875rem; line-height: 2.25rem; } /* text-3xl */
            .text-2xl { font-size: 1.25rem; line-height: 1.75rem; } /* text-xl */
            .text-xl { font-size: 1.125rem; line-height: 1.75rem; } /* text-lg */
            .text-lg { font-size: 1rem; line-height: 1.5rem; }    /* text-base */
             /* Adjust margins */
            .mb-12 { margin-bottom: 2rem; } /* mb-8 */
            .mb-8 { margin-bottom: 1.5rem; } /* mb-6 */
            .mb-6 { margin-bottom: 1rem; }  /* mb-4 */
             .mt-6 { margin-top: 1rem; } /* mt-4 */
             .py-16 { padding-top: 2.5rem; padding-bottom: 2.5rem; } /* py-10 */
             /* cURL buttons adjustments */
             #howto .flex-wrap {
                 gap: 0.5rem; /* gap-2 */
             }
              #howto .flex-wrap .btn {
                  padding: 0.5rem 0.75rem; /* Smaller padding */
                  font-size: 0.875rem; /* text-sm */
              }
              /* Copy button on mobile */
              #code .flex > .btn-icon {
                   /* padding: 0.6rem; /* Slightly larger tap area if needed */
              }
        }
        /* Larger screen adjustments */
        @media (min-width: 641px) {
            body {
                padding-top: 6rem; /* Restore larger padding */
                 padding-left: 1rem;
                 padding-right: 1rem;
            }
            .glass-container {
                padding: 2rem; /* Restore larger padding */
            }
             /* Restore row layout for buttons on desktop */
             #columns .button-container,
             #code .button-container {
                  flex-direction: row;
                  justify-content: space-between;
                  gap: 1rem; /* space-x-4 */
             }
              #columns .button-container .btn,
              #code .button-container .btn {
                  width: auto; /* Allow buttons to size naturally */
             }
              /* How-to back button on desktop */
              #howto .button-container {
                  justify-content: flex-start;
                   flex-direction: row; /* Ensure it's row */
              }
               #howto .button-container .btn {
                  width: auto;
               }
        }
    </style>
</head>
<body class="bg-gradient-to-br from-gray-200 via-gray-300 to-gray-400 min-h-screen font-sans text-gray-800">

    <header class="fixed top-0 left-0 w-full bg-white shadow-md p-4 z-50">
        <div class="max-w-6xl mx-auto text-xl font-bold text-gray-900">GSheet2DB</div>
    </header>

    <section id="heroSection" class="flex flex-col justify-center items-center text-center px-6 py-16 mb-12">
        <h1 class="text-4xl font-bold text-gray-900">Convert Google Sheets to a Database</h1>
        <p class="text-lg text-gray-700 mt-3 max-w-2xl">
            Generate Google Apps Script code to turn your spreadsheet into a simple REST API. Fast, simple, and free!
        </p>
    </section>

    <div id="progressSteps" class="max-w-xl mx-auto flex justify-center space-x-4 mb-8 px-4">
        <div data-step="columns" class="step-indicator">1</div>
        <div data-step="code" class="step-indicator">2</div>
        <div data-step="howto" class="step-indicator">3</div>
    </div>

    <div class="max-w-4xl mx-auto glass-container mb-12">
        <div id="columns" class="section active">
            <h2 class="text-2xl font-extrabold text-gray-900 mb-6 text-center">Step 1: Define Your Columns</h2>
            <div id="columnInputs" class="space-y-4 mb-6">
                <div class="flex items-center space-x-3 column-input-row">
                    <input type="text" class="column-input input-field flex-1" placeholder="Column name (e.g., Status)" value="word">
                     <button onclick="removeColumn(this)" class="btn btn-icon btn-red" aria-label="Remove column">
                        <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" /></svg>
                    </button>
                </div>
                 <div class="flex items-center space-x-3 column-input-row">
                    <input type="text" class="column-input input-field flex-1" placeholder="Column name (e.g., Category)" value="meaning">
                    <button onclick="removeColumn(this)" class="btn btn-icon btn-red" aria-label="Remove column">
                        <svg fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" /></svg>
                    </button>
                </div>
            </div>
            <div class="mt-6 button-container"> <button onclick="addColumn()" class="btn btn-blue w-full sm:w-auto">Add Column</button>
                <button onclick="nextSection('code')" class="btn btn-green w-full sm:w-auto">Next: Generate Code</button>
            </div>
        </div>

        <div id="code" class="section">
            <h2 class="text-2xl font-extrabold text-gray-900 mb-6 text-center">Step 2: Generated Apps Script Code</h2>
            <div class="flex flex-col sm:flex-row justify-between items-center mb-4 gap-3 sm:gap-0"> <h3 class="text-xl font-semibold text-gray-800">Code Preview</h3>
                 <button onclick="copyCode()" class="btn btn-icon btn-gray-dark self-end sm:self-center" title="Copy to clipboard" aria-label="Copy code to clipboard">
                    <svg class="w-6 h-6 text-gray-300" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 5H6a2 2 0 00-2 2v12a2 2 0 002 2h12a2 2 0 002-2V7a2 2 0 00-2-2h-2M8 5a2 2 0 002 2h4a2 2 0 002-2M8 5a2 2 0 012-2h4a2 2 0 012 2"></path></svg>
                    <span class="sr-only">Copy Code</span>
                </button>
            </div>
            <div id="codePreview" class="code-block mb-6"></div>
             <div class="mt-6 button-container"> <button onclick="nextSection('columns')" class="btn btn-gray w-full sm:w-auto">Back</button>
                <button onclick="nextSection('howto')" class="btn btn-green w-full sm:w-auto">Next: How to Use</button>
            </div>
        </div>

        <div id="howto" class="section">
            <h2 class="text-2xl font-extrabold text-gray-900 mb-6 text-center">Step 3: How to Use the API</h2>
             <h3 class="text-lg font-semibold text-gray-800 mb-3">Example cURL Commands:</h3>
            <div class="flex flex-wrap gap-2 mb-6 pb-2">
                <button class="curl-button btn btn-light text-sm px-3 py-1.5" onclick="showCurlExample('appendSingle', this)">Append Single</button>
                <button class="curl-button btn btn-light text-sm px-3 py-1.5" onclick="showCurlExample('appendMultiple', this)">Append Multiple</button>
                <button class="curl-button btn btn-light text-sm px-3 py-1.5" onclick="showCurlExample('fetchAll', this)">Fetch All</button>
                <button class="curl-button btn btn-light text-sm px-3 py-1.5" onclick="showCurlExample('fetchRange', this)">Fetch Range</button>
                <button class="curl-button btn btn-light text-sm px-3 py-1.5" onclick="showCurlExample('search', this)">Search</button>
                <button class="curl-button btn btn-light text-sm px-3 py-1.5" onclick="showCurlExample('update', this)">Update</button>
                <button class="curl-button btn btn-light text-sm px-3 py-1.5" onclick="showCurlExample('delete', this)">Delete</button>
            </div>
            <div id="curlExamples" class="code-block mb-6"></div>
            <div class="mt-6 flex justify-start button-container"> <button onclick="nextSection('code')" class="btn btn-gray w-full sm:w-auto">Back</button>
            </div>
        </div>
    </div>

  <section class="px-4 py-16 max-w-5xl mx-auto">
    <h2 class="text-3xl font-semibold text-center mb-10">Why Use This Tool?</h2>

    <div class="grid gap-8 md:grid-cols-3 text-center">
      <div>
        <div class="text-4xl mb-4"></div>
        <h3 class="text-xl font-medium mb-2">Fast Setup</h3>
        <p class="text-gray-600 text-sm">Turn your Google Sheet into a REST API in under a minute. No server, no hosting required.</p>
      </div>

      <div>
        <div class="text-4xl mb-4">🧠</div>
        <h3 class="text-xl font-medium mb-2">No Coding Needed</h3>
        <p class="text-gray-600 text-sm">Generate the exact Google Apps Script code you need—just copy and paste.</p>
      </div>

      <div>
        <div class="text-4xl mb-4">💸</div>
        <h3 class="text-xl font-medium mb-2">Completely Free</h3>
        <p class="text-gray-600 text-sm">No signup, no cost, no limits. Just paste your spreadsheet and go.</p>
      </div>
    </div>
  </section>

  <!-- FAQ Section -->
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          <span>What does this tool do?</span>
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          It generates Google Apps Script code to convert your spreadsheet into a REST API.
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          Yes, it's completely free. No signups, no limits.
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          Nope. Just copy the generated code and paste it into your Apps Script editor.
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