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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport"
        content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, viewport-fit=cover" />
  <meta name="apple-mobile-web-app-capable" content="yes" />
  <title>specimg · loop-scan</title>
  <style>
    :root { --mono: "SFMono-Regular", ui-monospace, "Menlo", monospace; --accent: #ffa000; }
    * { box-sizing: border-box; }
    html, body { margin: 0; height: 100%; background: #000; color: #eee;
                 font-family: var(--mono); overflow: hidden; }
    #canvas { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; background: #000; }

    .panel {
      position: fixed; left: 50%; bottom: calc(env(safe-area-inset-bottom) + 10px);
      transform: translateX(-50%); width: min(560px, 95vw); z-index: 10;
      display: flex; flex-direction: column; gap: 9px;
      background: rgba(18,18,20,0.84); border: 1px solid #333; border-radius: 12px;
      padding: 11px 13px; backdrop-filter: blur(6px);
    }
    .panel.hidden { opacity: 0; pointer-events: none; }
    .row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
    label.sl { flex: 1 1 100%; display: flex; align-items: center; gap: 8px; font-size: 13px; }
    input[type=range] { flex: 1; accent-color: var(--accent); }
    .val { min-width: 3.4em; text-align: right; color: var(--accent); }
    button { appearance: none; background: #f4f4f4; color: #111; border: none;
             border-radius: 8px; font-family: var(--mono); font-size: 13px; font-weight: 700;
             padding: 9px 13px; cursor: pointer; }
    .chk { font-size: 13px; white-space: nowrap; }
    a.link { color: var(--accent); text-decoration: none; font-size: 13px; padding: 9px 4px; }
    .hint { font-size: 11px; color: #888; }
  </style>
</head>
<body>
  <canvas id="canvas"></canvas>

  <div class="panel" id="panel">
    <div class="row">
      <button id="uploadBtn">Upload slip</button>
      <button id="playBtn">Pause</button>
      <button id="hideBtn">Hide</button>
      <a class="link" href="/">← create</a>
      <span class="hint" id="hint">upload a slip PNG</span>
    </div>
    <div class="row">
      <label class="chk"><input type="checkbox" id="reverse" /> reverse</label>
      <label class="chk"><input type="checkbox" id="flip" /> calibrate (photo)</label>
    </div>
    <label class="sl">speed %
      <input type="range" id="speed" min="10" max="400" value="100" />
      <span class="val"><span id="speedVal">100</span></span>
    </label>
    <label class="sl">gain %
      <input type="range" id="gain" min="0" max="400" value="100" />
      <span class="val"><span id="gainVal">100</span></span>
    </label>
  </div>

  <input type="file" id="fileInput" accept="image/*,.png" hidden />
  <script src="/static/loopscan.js"></script>
</body>
</html>