<!doctype html>
<html>
  <head>
    <title>APP_NAME_PLACEHOLDER</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="icon" type="image/svg+xml" href="data:image/svg+xml,%3Csvg width='180' height='180' viewBox='0 0 180 180' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Crect width='180' height='180' rx='36' fill='%23FF3C00'/%3E%3C/svg%3E" />
    <style>
      * {
        box-sizing: border-box;
      }
      body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        margin: 0;
        padding: 32px 20px;
        text-align: center;
        background: #fff;
        color: #222;
        line-height: 1.5;
        min-height: 100vh;
      }
      .wrapper {
        max-width: 480px;
        margin: 0 auto;
      }
      h1 {
        font-size: 26px;
        font-weight: 600;
        margin: 0;
        color: #111;
      }
      .subtitle {
        font-size: 15px;
        color: #666;
        margin-top: 8px;
        margin-bottom: 32px;
      }
      .loading {
        display: none;
        margin: 60px 0;
      }
      .spinner {
        border: 2px solid #ddd;
        border-top-color: #333;
        border-radius: 50%;
        width: 32px;
        height: 32px;
        animation: spin 0.8s linear infinite;
        margin: 20px auto;
      }
      @keyframes spin {
        to {
          transform: rotate(360deg);
        }
      }
      .loading-text {
        font-size: 16px;
        color: #444;
      }
      .content {
        display: block;
      }

      .steps-container {
        display: flex;
        flex-direction: column;
        gap: 20px;
      }

      .step {
        padding: 24px;
        border: 1px solid #ddd;
        border-radius: 12px;
        text-align: center;
        background: #fafafa;
      }
      .step-header {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        margin-bottom: 12px;
      }
      .step-number {
        width: 28px;
        height: 28px;
        border: 1px solid #999;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 600;
        font-size: 14px;
        flex-shrink: 0;
        color: #555;
      }
      .step-title {
        font-size: 18px;
        font-weight: 600;
        margin: 0;
        color: #222;
      }
      .step-description {
        font-size: 14px;
        margin-bottom: 16px;
        color: #666;
      }

      .store-buttons {
        display: flex;
        flex-direction: column;
        gap: 6px;
        justify-content: center;
        flex-wrap: wrap;
      }
      .store-button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 20px;
        font-size: 14px;
        font-weight: 500;
        border: 1px solid #ccc;
        border-radius: 8px;
        text-decoration: none;
        color: #333;
        background: #fff;
        transition: all 0.15s;
      }
      .store-button:hover {
        background: #f5f5f5;
        border-color: #999;
      }
      .store-link {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        padding: 8px 0;
        font-size: 13px;
        font-weight: 400;
        text-decoration: underline;
        text-underline-offset: 2px;
        color: #666;
        background: none;
        border: none;
        transition: color 0.15s;
      }
      .store-link:hover {
        color: #333;
      }
      .store-link .store-icon {
        width: 14px;
        height: 14px;
      }
      .store-icon {
        width: 18px;
        height: 18px;
      }

      .qr-section {
        background: #333;
        color: #fff;
        border-color: #333;
      }
      .qr-section .step-number {
        border-color: rgba(255, 255, 255, 0.5);
        color: #fff;
      }
      .qr-section .step-title {
        color: #fff;
      }
      .qr-section .step-description {
        color: rgba(255, 255, 255, 0.7);
      }
      .qr-code {
        width: 180px;
        height: 180px;
        margin: 0 auto 16px;
        background: #fff;
        border-radius: 8px;
        padding: 12px;
      }
      .qr-code canvas {
        width: 100%;
        height: 100%;
      }
      .open-button {
        display: inline-block;
        padding: 12px 24px;
        font-size: 14px;
        font-weight: 500;
        border: 1px solid rgba(255, 255, 255, 0.3);
        border-radius: 8px;
        text-decoration: none;
        color: #333;
        background: #fff;
        transition: opacity 0.15s;
      }
      .open-button:hover {
        opacity: 0.9;
      }

      /* Desktop styles */
      @media (min-width: 768px) {
        body {
          padding: 48px 32px;
          display: flex;
          align-items: center;
          justify-content: center;
        }
        .wrapper {
          max-width: 720px;
        }
        h1 {
          font-size: 32px;
          margin-bottom: 10px;
        }
        .subtitle {
          font-size: 16px;
          margin-bottom: 40px;
        }
        .steps-container {
          flex-direction: row;
          gap: 20px;
          align-items: stretch;
        }
        .step {
          flex: 1;
          display: flex;
          flex-direction: column;
          padding: 28px;
        }
        .step-description {
          flex-grow: 1;
        }
        .store-buttons {
          flex-direction: column;
          gap: 10px;
        }
        .qr-code {
          width: 200px;
          height: 200px;
        }
      }

      /* Large desktop */
      @media (min-width: 1024px) {
        .wrapper {
          max-width: 800px;
        }
        h1 {
          font-size: 36px;
        }
        .steps-container {
          gap: 28px;
        }
        .step {
          padding: 32px;
        }
      }

      /* Dark mode */
      @media (prefers-color-scheme: dark) {
        body {
          background: #0d0d0d;
          color: #e0e0e0;
        }
        h1 {
          color: #f5f5f5;
        }
        .subtitle {
          color: #999;
        }
        .spinner {
          border-color: #444;
          border-top-color: #ccc;
        }
        .loading-text {
          color: #aaa;
        }
        .step {
          border-color: #333;
          background: #1a1a1a;
        }
        .step-number {
          border-color: #666;
          color: #bbb;
        }
        .step-title {
          color: #f0f0f0;
        }
        .step-description {
          color: #888;
        }
        .store-button {
          border-color: #444;
          color: #e0e0e0;
          background: #222;
        }
        .store-button:hover {
          background: #2a2a2a;
          border-color: #666;
        }
        .store-link {
          color: #888;
        }
        .store-link:hover {
          color: #ccc;
        }
        .qr-section {
          background: #111;
          border-color: #333;
        }
        .qr-section .step-number {
          border-color: rgba(255, 255, 255, 0.4);
        }
        .qr-section .step-description {
          color: rgba(255, 255, 255, 0.6);
        }
        .open-button {
          background: #f0f0f0;
          color: #111;
        }
        .open-button:hover {
          background: #e0e0e0;
        }
      }
    </style>
  </head>
  <body>
    <div class="wrapper">
      <div class="loading" id="loading">
        <div class="spinner"></div>
        <div class="loading-text">Opening in Expo Go...</div>
      </div>

      <div class="content" id="content">
        <h1>APP_NAME_PLACEHOLDER</h1>
        <p class="subtitle">Preview this app on your phone</p>

        <div class="steps-container">
          <div class="step">
            <div class="step-header">
              <div class="step-number">1</div>
              <h2 class="step-title">Download Expo Go</h2>
            </div>
            <p class="step-description">
              Expo Go is a free app to test mobile apps
            </p>
            <div class="store-buttons" id="store-buttons">
              <a
                id="app-store-btn"
                href="https://apps.apple.com/app/id982107779"
                class="store-button"
                target="_blank"
              >
                <svg class="store-icon" viewBox="0 0 24 24" fill="currentColor">
                  <path
                    d="M18.71 19.5c-.83 1.24-1.71 2.45-3.05 2.47-1.34.03-1.77-.79-3.29-.79-1.53 0-2 .77-3.27.82-1.31.05-2.3-1.32-3.14-2.53C4.25 17 2.94 12.45 4.7 9.39c.87-1.52 2.43-2.48 4.12-2.51 1.28-.02 2.5.87 3.29.87.78 0 2.26-1.07 3.81-.91.65.03 2.47.26 3.64 1.98-.09.06-2.17 1.28-2.15 3.81.03 3.02 2.65 4.03 2.68 4.04-.03.07-.42 1.44-1.38 2.83M13 3.5c.73-.83 1.94-1.46 2.94-1.5.13 1.17-.34 2.35-1.04 3.19-.69.85-1.83 1.51-2.95 1.42-.15-1.15.41-2.35 1.05-3.11z"
                  />
                </svg>
                App Store
              </a>
              <a
                id="play-store-btn"
                href="https://play.google.com/store/apps/details?id=host.exp.exponent"
                class="store-button"
                target="_blank"
              >
                <svg class="store-icon" viewBox="0 0 24 24" fill="currentColor">
                  <path
                    d="M3,20.5V3.5C3,2.91 3.34,2.39 3.84,2.15L13.69,12L3.84,21.85C3.34,21.6 3,21.09 3,20.5M16.81,15.12L6.05,21.34L14.54,12.85L16.81,15.12M20.16,10.81C20.5,11.08 20.75,11.5 20.75,12C20.75,12.5 20.53,12.9 20.18,13.18L17.89,14.5L15.39,12L17.89,9.5L20.16,10.81M6.05,2.66L16.81,8.88L14.54,11.15L6.05,2.66Z"
                  />
                </svg>
                Google Play
              </a>
            </div>
          </div>

          <div class="step qr-section">
            <div class="step-header">
              <div class="step-number">2</div>
              <h2 class="step-title">Scan QR Code</h2>
            </div>
            <p class="step-description">Use your phone's camera or Expo Go</p>
            <div class="qr-code" id="qr-code"></div>
            <a href="exps://EXPS_URL_PLACEHOLDER" class="open-button"
              >Open in Expo Go</a
            >
          </div>
        </div>
      </div>
    </div>

    <script src="https://unpkg.com/qr-code-styling@1.6.0/lib/qr-code-styling.js"></script>
    <script>
      (function () {
        const ua = navigator.userAgent;
        const loadingEl = document.getElementById("loading");
        const contentEl = document.getElementById("content");

        const isAndroid = /Android/i.test(ua);
        const isIOS =
          /iPhone|iPad|iPod/i.test(ua) ||
          (navigator.platform === "MacIntel" && navigator.maxTouchPoints > 1);

        const deepLink = "exps://EXPS_URL_PLACEHOLDER";

        // Adjust store buttons based on platform
        const appStoreBtn = document.getElementById("app-store-btn");
        const playStoreBtn = document.getElementById("play-store-btn");
        const storeButtonsContainer = document.getElementById("store-buttons");

        if (isIOS) {
          playStoreBtn.className = "store-link";
          storeButtonsContainer.appendChild(playStoreBtn);
        } else if (isAndroid) {
          appStoreBtn.className = "store-link";
          storeButtonsContainer.insertBefore(playStoreBtn, appStoreBtn);
        }

        const qrCode = new QRCodeStyling({
          width: 400,
          height: 400,
          data: deepLink,
          dotsOptions: {
            color: "#333333",
            type: "rounded",
          },
          backgroundOptions: {
            color: "#ffffff",
          },
          cornersSquareOptions: {
            type: "extra-rounded",
          },
          cornersDotOptions: {
            type: "dot",
          },
          qrOptions: {
            errorCorrectionLevel: "H",
          },
        });

        qrCode.append(document.getElementById("qr-code"));

        if (isAndroid || isIOS) {
          loadingEl.style.display = "block";
          contentEl.style.display = "none";
          window.location.href = deepLink;
          setTimeout(function () {
            loadingEl.style.display = "none";
            contentEl.style.display = "block";
          }, 500);
        }
      })();
    </script>
  </body>
</html>
