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Diabetes-Prediction
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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>Diabetes Risk Predictor</title>
  <link rel="preconnect" href="https://fonts.googleapis.com" />
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
  <link href="https://fonts.googleapis.com/css2?family=Figtree:wght@300;400;500;600;700;800&display=swap" rel="stylesheet" />
  <style>
    :root {
      --bg:        #030912;
      --sur:       rgba(255,255,255,0.04);
      --sur2:      rgba(255,255,255,0.07);
      --brd:       rgba(255,255,255,0.08);
      --brd2:      rgba(255,255,255,0.14);
      --cyan:      #06B6D4;
      --cyan-lt:   #67E8F9;
      --cyan-glow: rgba(6,182,212,0.22);
      --t1:        #E2F4FF;
      --t2:        #94A3B8;
      --t3:        #475569;
      --hi:  #F43F5E; --hi-s: rgba(244,63,94,0.13);  --hi-b: rgba(244,63,94,0.28);
      --mo:  #F97316; --mo-s: rgba(249,115,60,0.13);  --mo-b: rgba(249,115,60,0.28);
      --lo:  #10B981; --lo-s: rgba(16,185,129,0.13);  --lo-b: rgba(16,185,129,0.28);
      --r: 14px; --r-s: 9px; --ease: cubic-bezier(.4,0,.2,1);
    }
    *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:'Figtree',system-ui,sans-serif;
      background:var(--bg);
      color:var(--t1);
      min-height:100vh;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }

    /* ── Blood-cell canvas ─────────────────────────────── */
    #bgCanvas{
      position:fixed;inset:0;z-index:0;
      pointer-events:none;opacity:.9;
    }

    /* ── Header ────────────────────────────────────────── */
    header{
      position:sticky;top:0;z-index:50;
      height:68px;
      background:rgba(3,9,18,.82);
      backdrop-filter:blur(24px);
      -webkit-backdrop-filter:blur(24px);
      border-bottom:1px solid var(--brd);
      display:flex;align-items:center;justify-content:space-between;
      padding:0 2rem;
      overflow:hidden;
    }
    /* ECG wave lives here as absolute background */
    .ecg-track{
      position:absolute;inset:0;overflow:hidden;
      pointer-events:none;
      /* fade in after brand (~300px), fade out before status pill (~120px from right) */
      -webkit-mask-image:linear-gradient(
        to right,
        transparent 0px,
        transparent 300px,
        black 390px,
        black calc(100% - 130px),
        transparent calc(100% - 60px)
      );
      mask-image:linear-gradient(
        to right,
        transparent 0px,
        transparent 300px,
        black 390px,
        black calc(100% - 130px),
        transparent calc(100% - 60px)
      );
    }
    .ecg-svg{
      position:absolute;top:50%;left:0;
      transform:translateY(-50%);
      will-change:transform;
    }
    /* cycle width = 140px β†’ animation translates exactly one cycle */
    .ecg-svg.playing{
      animation:ecgScroll 3s linear infinite;
    }
    @keyframes ecgScroll{
      from{transform:translateY(-50%) translateX(0)}
      to  {transform:translateY(-50%) translateX(-140px)}
    }
    /* faint baseline so the full line is always visible */
    .ecg-base{
      fill:none;
      stroke:var(--cyan);
      stroke-width:1;
      opacity:.12;
      transition:stroke 1s ease;
    }
    .ecg-path{
      fill:none;
      stroke:var(--cyan);
      stroke-width:2;
      stroke-linecap:round;
      stroke-linejoin:round;
      opacity:.55;
      transition:stroke 1s ease, opacity .5s;
    }

    .brand{position:relative;z-index:1;display:flex;align-items:center;gap:.85rem}
    .brand-icon{
      width:40px;height:40px;border-radius:11px;
      background:linear-gradient(135deg,var(--cyan),var(--cyan-lt));
      box-shadow:0 0 18px var(--cyan-glow);
      display:flex;align-items:center;justify-content:center;
      flex-shrink:0;
    }
    .brand-name{font-size:1rem;font-weight:700;color:var(--t1);letter-spacing:-.015em;line-height:1.2}
    .brand-tag{
      font-size:.65rem;font-weight:700;letter-spacing:.1em;
      text-transform:uppercase;color:var(--cyan-lt);
      background:rgba(103,232,249,.1);border:1px solid rgba(103,232,249,.2);
      padding:.16rem .55rem;border-radius:100px;
    }
    .hd-right{position:relative;z-index:1;display:flex;align-items:center;gap:.85rem}
    .status-pill{
      display:flex;align-items:center;gap:.6rem;
      padding:.55rem 1.1rem;
      background:rgba(16,185,129,0.10);
      border:1.5px solid rgba(16,185,129,0.35);
      border-radius:100px;
      font-size:.82rem;font-weight:700;
      color:#34D399;
      letter-spacing:.04em;
      box-shadow:0 0 14px rgba(16,185,129,0.18);
    }
    .sdot{
      width:9px;height:9px;border-radius:50%;
      background:#10B981;
      box-shadow:0 0 8px #10B981, 0 0 16px rgba(16,185,129,0.5);
      animation:blink 2s ease infinite;
      flex-shrink:0;
    }
    @keyframes blink{0%,100%{opacity:1;box-shadow:0 0 8px #10B981,0 0 16px rgba(16,185,129,.5)}50%{opacity:.5;box-shadow:0 0 4px #10B981}}

    /* ── Main grid ─────────────────────────────────────── */
    .wrap{
      position:relative;z-index:1;
      max-width:1300px;margin:0 auto;
      padding:2rem 1.5rem 3rem;
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:1.5rem;
      align-items:start;
    }
    @media(max-width:880px){.wrap{grid-template-columns:1fr}}

    /* ── Glass card ────────────────────────────────────── */
    .card{
      background:var(--sur);
      backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
      border:1px solid var(--brd);
      border-radius:var(--r);overflow:hidden;
    }
    .card-hd{
      padding:1.1rem 1.5rem;border-bottom:1px solid var(--brd);
      display:flex;align-items:center;gap:.7rem;
    }
    .card-ico{
      width:30px;height:30px;border-radius:8px;
      background:var(--cyan-glow);border:1px solid rgba(6,182,212,.25);
      display:flex;align-items:center;justify-content:center;
      color:var(--cyan-lt);flex-shrink:0;
    }
    .card-ttl{font-size:.88rem;font-weight:600;color:var(--t1)}
    .card-bd{padding:1.5rem}

    /* ── Presets ───────────────────────────────────────── */
    .pre-lbl{font-size:.67rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--t3);margin-bottom:.45rem}
    .pre-row{display:flex;gap:.5rem;margin-bottom:1.4rem}
    .pre-btn{
      flex:1;padding:.42rem .4rem;
      border-radius:var(--r-s);border:1px solid var(--brd);
      background:rgba(255,255,255,.025);
      font-family:'Figtree',sans-serif;font-size:.73rem;font-weight:600;
      color:var(--t2);cursor:pointer;
      transition:all .18s var(--ease);
    }
    .pre-btn:hover{background:var(--sur2)}
    .pre-btn.pl:hover{border-color:var(--lo); color:var(--lo)}
    .pre-btn.pm:hover{border-color:var(--mo); color:var(--mo)}
    .pre-btn.ph:hover{border-color:var(--hi); color:var(--hi)}
    .pre-btn:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

    /* ── Field grid ────────────────────────────────────── */
    .fgrid{display:grid;grid-template-columns:1fr 1fr;gap:1.1rem 1.2rem}
    .field{display:flex;flex-direction:column;gap:.28rem}
    .field.full{grid-column:1/-1}

    .flbl{
      display:flex;justify-content:space-between;align-items:center;
    }
    .flbl-txt{
      font-size:.7rem;font-weight:700;
      text-transform:uppercase;letter-spacing:.07em;color:var(--t2);
    }
    .flbl-txt span{font-size:.66rem;font-weight:400;text-transform:none;letter-spacing:0;color:var(--t3)}
    .status-tag{
      font-size:.62rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
      padding:.1rem .48rem;border-radius:100px;
      transition:all .3s var(--ease);
      display:none;
    }

    /* dual control: slider + number */
    .dual{display:flex;align-items:center;gap:.6rem}

    /* range slider */
    input[type="range"]{
      -webkit-appearance:none;appearance:none;
      flex:1;height:5px;border-radius:100px;cursor:pointer;outline:none;
      background:linear-gradient(to right,var(--track-fill,var(--cyan)) 0%,var(--track-fill,var(--cyan)) var(--pct,50%),rgba(255,255,255,.1) var(--pct,50%),rgba(255,255,255,.1) 100%);
      transition:background .1s;
    }
    input[type="range"]::-webkit-slider-thumb{
      -webkit-appearance:none;appearance:none;
      width:14px;height:14px;border-radius:50%;
      background:var(--thumb-color,var(--cyan));
      border:2px solid rgba(255,255,255,.25);
      box-shadow:0 0 8px var(--thumb-glow,var(--cyan-glow));
      transition:transform .15s, box-shadow .15s;
    }
    input[type="range"]::-webkit-slider-thumb:hover{transform:scale(1.25)}
    input[type="range"]::-moz-range-thumb{
      width:14px;height:14px;border-radius:50%;border:none;
      background:var(--thumb-color,var(--cyan));
    }
    input[type="range"]:focus-visible::-webkit-slider-thumb{
      box-shadow:0 0 0 3px var(--cyan-glow), 0 0 8px var(--cyan-glow);
    }

    /* number input */
    input[type="number"]{
      -moz-appearance:textfield;
      width:62px;padding:.42rem .5rem;
      background:rgba(255,255,255,.05);
      border:1.5px solid var(--brd);border-radius:var(--r-s);
      color:var(--t1);font-family:'Figtree',sans-serif;
      font-size:.85rem;font-weight:600;text-align:center;
      outline:none;transition:border-color .18s,box-shadow .18s;
    }
    input[type="number"]::-webkit-inner-spin-button,
    input[type="number"]::-webkit-outer-spin-button{-webkit-appearance:none}
    input[type="number"]:focus{
      border-color:var(--cyan);
      box-shadow:0 0 0 3px var(--cyan-glow);
    }
    .field-hint{font-size:.64rem;color:var(--t3)}

    /* ── Run button ────────────────────────────────────── */
    .btn-run{
      margin-top:1.35rem;width:100%;
      padding:.85rem 1rem;
      background:linear-gradient(135deg,var(--cyan),var(--cyan-lt));
      color:#fff;font-family:'Figtree',sans-serif;
      font-size:.93rem;font-weight:700;letter-spacing:.01em;
      border:none;border-radius:var(--r-s);cursor:pointer;
      display:flex;align-items:center;justify-content:center;gap:.55rem;
      position:relative;overflow:hidden;
      transition:transform .15s var(--ease),box-shadow .15s;
    }
    .btn-run:hover:not(:disabled){
      transform:translateY(-1px);
      box-shadow:0 10px 30px rgba(6,182,212,.40);
    }
    .btn-run:active:not(:disabled){transform:translateY(0)}
    .btn-run:disabled{cursor:not-allowed;opacity:.6}
    .btn-run:focus-visible{outline:2px solid var(--cyan-lt);outline-offset:3px}
    .btn-run.loading::after{
      content:'';position:absolute;inset:0;
      background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);
      animation:shim 1.3s linear infinite;
    }
    @keyframes shim{from{transform:translateX(-100%)}to{transform:translateX(100%)}}
    .spin{
      display:none;width:15px;height:15px;
      border:2.5px solid rgba(255,255,255,.3);
      border-top-color:#fff;border-radius:50%;
      animation:rot .65s linear infinite;
    }
    .btn-run.loading .spin{display:block}
    .btn-run.loading .btn-ic{display:none}
    @keyframes rot{to{transform:rotate(360deg)}}

    /* ── Error ─────────────────────────────────────────── */
    .err-box{
      margin-top:.85rem;display:none;
      padding:.7rem .9rem;
      background:var(--hi-s);border:1px solid var(--hi-b);
      border-radius:var(--r-s);color:#FDA4AF;
      font-size:.8rem;align-items:flex-start;gap:.45rem;
    }
    .err-box.show{display:flex}

    /* ── Results: empty ────────────────────────────────── */
    .empty-s{
      padding:3.8rem 2rem;
      display:flex;flex-direction:column;align-items:center;gap:.9rem;text-align:center;
    }
    .empty-ring{
      width:64px;height:64px;border-radius:50%;
      border:1.5px dashed rgba(255,255,255,.13);
      display:flex;align-items:center;justify-content:center;
      color:var(--t3);
      animation:pulse-ring 3s ease infinite;
    }
    @keyframes pulse-ring{
      0%,100%{box-shadow:0 0 0 0 rgba(6,182,212,0)}
      50%{box-shadow:0 0 0 8px rgba(6,182,212,.07)}
    }
    .empty-h{font-size:.9rem;font-weight:600;color:var(--t2)}
    .empty-p{font-size:.77rem;color:var(--t3);max-width:195px;line-height:1.6}

    /* ── Results: output ───────────────────────────────── */
    .res-out{display:none}
    .res-out.show{display:block;animation:fadeUp .4s var(--ease)}
    @keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

    /* scanning overlay */
    .scan-overlay{
      position:absolute;inset:0;pointer-events:none;z-index:20;
      background:linear-gradient(to bottom,transparent 44%,rgba(6,182,212,.07) 48%,rgba(6,182,212,.16) 50%,rgba(6,182,212,.07) 52%,transparent 56%);
      display:none;
    }
    .card.scanning .scan-overlay{display:block;animation:scanDown 1s ease infinite}
    @keyframes scanDown{from{transform:translateY(-110%)}to{transform:translateY(110%)}}

    /* risk badge */
    .r-badge{
      display:inline-flex;align-items:center;gap:.4rem;
      padding:.3rem .8rem;border-radius:100px;
      font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.09em;
      margin-bottom:1.3rem;
    }
    .r-badge.high    {background:var(--hi-s);color:#FB7185;border:1px solid var(--hi-b)}
    .r-badge.moderate{background:var(--mo-s);color:#FB923C;border:1px solid var(--mo-b)}
    .r-badge.low     {background:var(--lo-s);color:#34D399;border:1px solid var(--lo-b)}

    /* gauge */
    .gauge-wrap{display:flex;justify-content:center;margin-bottom:1.4rem}
    .gauge-container{position:relative;width:170px;height:170px;display:flex;align-items:center;justify-content:center}
    .gauge-svg{position:absolute;inset:0;transform:rotate(-90deg)}
    .g-track{fill:none;stroke:rgba(255,255,255,.06);stroke-width:12}
    .g-fill{
      fill:none;stroke-width:12;stroke-linecap:round;
      stroke-dasharray:408.41; /* 2π×65 */
      stroke-dashoffset:408.41;
      transition:stroke-dashoffset 1s var(--ease),stroke .5s ease;
    }
    /* outer glow ring */
    .g-outer{fill:none;stroke-width:1.5;stroke-dasharray:408.41;stroke-dashoffset:408.41;opacity:.35;transition:stroke-dashoffset 1s var(--ease),stroke .5s ease}
    .gauge-info{
      position:relative;z-index:1;
      display:flex;flex-direction:column;align-items:center;gap:0;
    }
    .g-pct{font-size:2.4rem;font-weight:800;letter-spacing:-.05em;line-height:1}
    .g-lbl{font-size:.64rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--t3);margin-top:.18rem}

    /* stats row */
    .stats{
      display:grid;grid-template-columns:1fr 1px 1fr 1px 1fr;
      background:rgba(255,255,255,.025);border:1px solid var(--brd);
      border-radius:var(--r-s);margin-bottom:1.35rem;overflow:hidden;
    }
    .stat{padding:.72rem .5rem;text-align:center}
    .stat-v{font-size:.92rem;font-weight:700;color:var(--t1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .stat-k{font-size:.62rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--t3);margin-top:.1rem}
    .st-div{background:var(--brd);align-self:stretch}

    /* shap */
    .shap-hd{
      display:flex;align-items:center;gap:.45rem;
      font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;
      color:var(--t2);margin-bottom:.75rem;
    }
    .shap-ico{
      width:20px;height:20px;border-radius:5px;
      background:rgba(249,115,22,.12);border:1px solid rgba(249,115,22,.22);
      display:flex;align-items:center;justify-content:center;color:#FB923C;flex-shrink:0;
    }
    /* plain-language summary box */
    .shap-summary{
      padding:.7rem .9rem;
      background:rgba(255,255,255,.035);
      border:1px solid var(--brd);
      border-left:3px solid var(--cyan);
      border-radius:var(--r-s);
      font-size:.79rem;line-height:1.65;color:var(--t2);
      margin-bottom:1rem;
    }
    .shap-summary strong{color:var(--t1);font-weight:600}
    /* legend row */
    .shap-legend{
      display:flex;gap:1rem;margin-bottom:.8rem;
    }
    .legend-item{
      display:flex;align-items:center;gap:.35rem;
      font-size:.67rem;font-weight:600;color:var(--t3);
    }
    .legend-dot{width:8px;height:8px;border-radius:2px;flex-shrink:0}
    .legend-dot.p{background:linear-gradient(90deg,#BE123C,#F87171)}
    .legend-dot.n{background:linear-gradient(90deg,#065F46,#34D399)}
    /* each bar row */
    .sh-row{
      display:grid;grid-template-columns:8.5rem 1fr 5.2rem;
      align-items:center;gap:.5rem;margin-bottom:.55rem;
      opacity:0;animation:shIn .3s var(--ease) forwards;
      cursor:default;
    }
    .sh-row:hover .sh-track{background:rgba(255,255,255,.1)}
    @keyframes shIn{from{opacity:0;transform:translateX(-6px)}to{opacity:1;transform:translateX(0)}}
    .sh-nm{font-size:.74rem;color:var(--t1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .sh-track{height:5px;background:rgba(255,255,255,.06);border-radius:100px;overflow:hidden;transition:background .2s}
    .sh-bar{height:100%;border-radius:100px;transition:width .6s var(--ease)}
    .sh-bar.p{background:linear-gradient(90deg,#BE123C,#F87171)}
    .sh-bar.n{background:linear-gradient(90deg,#065F46,#34D399)}
    /* impact badge (replaces raw decimal) */
    .sh-badge{
      font-size:.63rem;font-weight:700;text-align:center;
      padding:.18rem .48rem;border-radius:100px;
      white-space:nowrap;cursor:help;
      transition:opacity .15s;
    }
    .sh-badge:hover{opacity:.75}
    .sh-badge.strong  {background:rgba(244,63,94,.15); color:#FB7185; border:1px solid rgba(244,63,94,.3)}
    .sh-badge.moderate{background:rgba(249,115,22,.15);color:#FB923C; border:1px solid rgba(249,115,22,.3)}
    .sh-badge.low     {background:rgba(100,116,139,.15);color:#94A3B8;border:1px solid rgba(100,116,139,.25)}

    /* ── Footer ────────────────────────────────────────── */
    footer{
      position:relative;z-index:1;
      text-align:center;padding:1.25rem 2rem 2.5rem;
      color:var(--t3);font-size:.71rem;line-height:1.7;
      border-top:1px solid var(--brd);
    }

    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
    }
  </style>
</head>
<body>

<!-- floating blood-cell particles -->
<canvas id="bgCanvas"></canvas>

<!-- ══ HEADER ══════════════════════════════════════════════════ -->
<header>

  <!-- ECG animated background -->
  <div class="ecg-track" aria-hidden="true">
    <svg class="ecg-svg" id="ecgSvg" height="60">
      <!-- full-width faint baseline so the line is always visible -->
      <line class="ecg-base" id="ecgBase" x1="0" y1="30" x2="9999" y2="30"/>
      <!-- animated ECG waveform -->
      <path class="ecg-path" id="ecgPath"/>
    </svg>
  </div>

  <div class="brand">
    <div class="brand-icon" aria-hidden="true">
      <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="#fff" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round">
        <polyline points="22 12 18 12 15 21 9 3 6 12 2 12"/>
      </svg>
    </div>
    <div>
      <div class="brand-name">Diabetes Risk Predictor</div>
      <div class="brand-tag">XGBoost Β· SHAP Explainability</div>
    </div>
  </div>

  <div class="hd-right">
    <div class="status-pill" role="status" aria-label="API status">
      <div class="sdot" aria-hidden="true"></div>
      <span>API Live</span>
    </div>
  </div>

</header>

<!-- ══ MAIN ════════════════════════════════════════════════════ -->
<div class="wrap">

  <!-- ── LEFT: Patient Input ─────────────────────────── -->
  <section class="card" aria-label="Patient parameter input">
    <div class="card-hd">
      <div class="card-ico" aria-hidden="true">
        <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.3" stroke-linecap="round" stroke-linejoin="round">
          <path d="M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2"/><circle cx="12" cy="7" r="4"/>
        </svg>
      </div>
      <span class="card-ttl">Patient Parameters</span>
    </div>
    <div class="card-bd">

      <div class="pre-lbl">Quick Presets</div>
      <div class="pre-row">
        <button class="pre-btn pl" type="button" onclick="loadPreset('low')"      aria-label="Load low-risk preset">Low Risk</button>
        <button class="pre-btn pm" type="button" onclick="loadPreset('moderate')" aria-label="Load moderate-risk preset">Moderate</button>
        <button class="pre-btn ph" type="button" onclick="loadPreset('high')"     aria-label="Load high-risk preset">High Risk</button>
      </div>

      <form id="pForm" onsubmit="return false;" novalidate>
        <div class="fgrid">

          <!-- pregnancies -->
          <div class="field" id="f-pregnancies">
            <div class="flbl">
              <span class="flbl-txt">Pregnancies</span>
              <span class="status-tag" id="st-pregnancies"></span>
            </div>
            <div class="dual">
              <input type="range"  id="r-pregnancies" min="0"  max="17"  step="1"   value="2"   oninput="sync('pregnancies',this.value)" aria-label="Pregnancies slider"/>
              <input type="number" id="pregnancies"   min="0"  max="17"  step="1"   value="2"   oninput="sync('pregnancies',this.value,true)" aria-label="Pregnancies value"/>
            </div>
            <span class="field-hint">0 – 17</span>
          </div>

          <!-- glucose -->
          <div class="field" id="f-glucose">
            <div class="flbl">
              <span class="flbl-txt">Glucose <span>mg/dL</span></span>
              <span class="status-tag" id="st-glucose"></span>
            </div>
            <div class="dual">
              <input type="range"  id="r-glucose" min="50"  max="250" step="1"   value="120" oninput="sync('glucose',this.value)" aria-label="Glucose slider"/>
              <input type="number" id="glucose"   min="50"  max="250" step="1"   value="120" oninput="sync('glucose',this.value,true)" aria-label="Glucose value"/>
            </div>
            <span class="field-hint">50 – 250</span>
          </div>

          <!-- blood_pressure -->
          <div class="field" id="f-blood_pressure">
            <div class="flbl">
              <span class="flbl-txt">Blood Pressure <span>mm Hg</span></span>
              <span class="status-tag" id="st-blood_pressure"></span>
            </div>
            <div class="dual">
              <input type="range"  id="r-blood_pressure" min="40"  max="130" step="1"   value="72" oninput="sync('blood_pressure',this.value)" aria-label="Blood pressure slider"/>
              <input type="number" id="blood_pressure"   min="40"  max="130" step="1"   value="72" oninput="sync('blood_pressure',this.value,true)" aria-label="Blood pressure value"/>
            </div>
            <span class="field-hint">40 – 130</span>
          </div>

          <!-- skin_thickness -->
          <div class="field" id="f-skin_thickness">
            <div class="flbl">
              <span class="flbl-txt">Skin Thickness <span>mm</span></span>
              <span class="status-tag" id="st-skin_thickness"></span>
            </div>
            <div class="dual">
              <input type="range"  id="r-skin_thickness" min="0" max="100" step="1" value="20" oninput="sync('skin_thickness',this.value)" aria-label="Skin thickness slider"/>
              <input type="number" id="skin_thickness"   min="0" max="100" step="1" value="20" oninput="sync('skin_thickness',this.value,true)" aria-label="Skin thickness value"/>
            </div>
            <span class="field-hint">0 – 100</span>
          </div>

          <!-- insulin -->
          <div class="field" id="f-insulin">
            <div class="flbl">
              <span class="flbl-txt">Insulin <span>mu U/ml</span></span>
              <span class="status-tag" id="st-insulin"></span>
            </div>
            <div class="dual">
              <input type="range"  id="r-insulin" min="0" max="900" step="1" value="80" oninput="sync('insulin',this.value)" aria-label="Insulin slider"/>
              <input type="number" id="insulin"   min="0" max="900" step="1" value="80" oninput="sync('insulin',this.value,true)" aria-label="Insulin value"/>
            </div>
            <span class="field-hint">0 – 900</span>
          </div>

          <!-- bmi -->
          <div class="field" id="f-bmi">
            <div class="flbl">
              <span class="flbl-txt">BMI</span>
              <span class="status-tag" id="st-bmi"></span>
            </div>
            <div class="dual">
              <input type="range"  id="r-bmi" min="10" max="70" step="0.1" value="25" oninput="sync('bmi',this.value)" aria-label="BMI slider"/>
              <input type="number" id="bmi"   min="10" max="70" step="0.1" value="25" oninput="sync('bmi',this.value,true)" aria-label="BMI value"/>
            </div>
            <span class="field-hint">10.0 – 70.0</span>
          </div>

          <!-- dpf -->
          <div class="field full" id="f-dpf">
            <div class="flbl">
              <span class="flbl-txt">Diabetes Pedigree Function</span>
              <span class="status-tag" id="st-dpf"></span>
            </div>
            <div class="dual">
              <input type="range"  id="r-dpf" min="0" max="2.5" step="0.01" value="0.35" oninput="sync('dpf',this.value)" aria-label="Diabetes pedigree slider"/>
              <input type="number" id="dpf"   min="0" max="2.5" step="0.01" value="0.35" oninput="sync('dpf',this.value,true)" aria-label="Diabetes pedigree value"/>
            </div>
            <span class="field-hint">0.0 – 2.5 &nbsp;Β·&nbsp; Hereditary risk score</span>
          </div>

          <!-- age -->
          <div class="field" id="f-age">
            <div class="flbl">
              <span class="flbl-txt">Age</span>
              <span class="status-tag" id="st-age"></span>
            </div>
            <div class="dual">
              <input type="range"  id="r-age" min="18" max="90" step="1" value="30" oninput="sync('age',this.value)" aria-label="Age slider"/>
              <input type="number" id="age"   min="18" max="90" step="1" value="30" oninput="sync('age',this.value,true)" aria-label="Age value"/>
            </div>
            <span class="field-hint">18 – 90</span>
          </div>

        </div>

        <button class="btn-run" id="runBtn" type="submit" onclick="runAnalysis()" aria-label="Run diabetes risk analysis">
          <div class="spin" aria-hidden="true"></div>
          <svg class="btn-ic" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true">
            <polygon points="5 3 19 12 5 21 5 3"/>
          </svg>
          <span id="btnTxt">Run Analysis</span>
        </button>

        <div class="err-box" id="errBox" role="alert" aria-live="assertive">
          <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" style="flex-shrink:0;margin-top:1px">
            <circle cx="12" cy="12" r="10"/><line x1="12" y1="8" x2="12" y2="12"/><line x1="12" y1="16" x2="12.01" y2="16"/>
          </svg>
          <span id="errTxt"></span>
        </div>
      </form>

    </div>
  </section>

  <!-- ── RIGHT: Risk Assessment ──────────────────────── -->
  <section class="card" id="resultCard" aria-label="Prediction results" style="position:relative" aria-live="polite">
    <div class="scan-overlay" id="scanOverlay" aria-hidden="true"></div>
    <div class="card-hd">
      <div class="card-ico" aria-hidden="true">
        <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.3" stroke-linecap="round" stroke-linejoin="round">
          <path d="M22 12h-4l-3 9L9 3l-3 9H2"/>
        </svg>
      </div>
      <span class="card-ttl">Risk Assessment</span>
    </div>
    <div class="card-bd">

      <!-- Empty state -->
      <div class="empty-s" id="emptyS">
        <div class="empty-ring" aria-hidden="true">
          <svg width="26" height="26" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round">
            <circle cx="12" cy="12" r="10"/><line x1="12" y1="8" x2="12" y2="12"/><line x1="12" y1="16" x2="12.01" y2="16"/>
          </svg>
        </div>
        <div class="empty-h">Awaiting Analysis</div>
        <p class="empty-p">Adjust the patient parameters on the left and click Run Analysis.</p>
      </div>

      <!-- Result output -->
      <div class="res-out" id="resOut">

        <div class="r-badge" id="rBadge" role="status"></div>

        <!-- Gauge -->
        <div class="gauge-wrap">
          <div class="gauge-container">
            <svg class="gauge-svg" width="170" height="170" viewBox="0 0 170 170" aria-hidden="true">
              <!-- outer decoration ring -->
              <circle class="g-outer" id="gOuter" cx="85" cy="85" r="78" stroke="var(--cyan)"/>
              <!-- track -->
              <circle class="g-track" cx="85" cy="85" r="65"/>
              <!-- fill arc -->
              <circle class="g-fill" id="gFill" cx="85" cy="85" r="65"/>
            </svg>
            <div class="gauge-info" aria-label="Risk probability gauge">
              <div class="g-pct" id="gPct">β€”</div>
              <div class="g-lbl">Risk Score</div>
            </div>
          </div>
        </div>

        <!-- Stats -->
        <div class="stats" role="list">
          <div class="stat" role="listitem">
            <div class="stat-v" id="sLabel">β€”</div>
            <div class="stat-k">Diagnosis</div>
          </div>
          <div class="st-div" aria-hidden="true"></div>
          <div class="stat" role="listitem">
            <div class="stat-v" id="sProb">β€”</div>
            <div class="stat-k">Probability</div>
          </div>
          <div class="st-div" aria-hidden="true"></div>
          <div class="stat" role="listitem">
            <div class="stat-v">40%</div>
            <div class="stat-k">Threshold</div>
          </div>
        </div>

        <!-- SHAP -->
        <div>
          <div class="shap-hd">
            <div class="shap-ico" aria-hidden="true">
              <svg width="10" height="10" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" stroke-linecap="round" stroke-linejoin="round">
                <polygon points="12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2"/>
              </svg>
            </div>
            What's Driving This Result?
          </div>
          <div id="shapBars" role="list" aria-label="SHAP feature contributions"></div>
        </div>

      </div>
    </div>
  </section>

</div>

<!-- ══ FOOTER ══════════════════════════════════════════════════ -->
<footer>
  <strong style="color:var(--t2);font-weight:600">Clinical Disclaimer</strong><br>
  This interface is for research and educational purposes only. Predictions are generated by a machine learning model
  and do not constitute medical advice, diagnosis, or treatment.
  Always consult a qualified healthcare professional for clinical decisions.
</footer>

<script>
/* ═══════════════════════════════════════════════════════════════
   CONFIG
═══════════════════════════════════════════════════════════════ */
const API     = '';
const CIRC    = 2 * Math.PI * 65;   // β‰ˆ 408.41

const RISK = {
  high:     { color:'#F43F5E', light:'#FB7185', glow:'rgba(244,63,94,.35)',  label:'High Risk',     ecg:'#F43F5E' },
  moderate: { color:'#F97316', light:'#FB923C', glow:'rgba(249,115,22,.35)', label:'Moderate Risk', ecg:'#F97316' },
  low:      { color:'#10B981', light:'#34D399', glow:'rgba(16,185,129,.35)', label:'Low Risk',      ecg:'#10B981' },
};

/* ═══════════════════════════════════════════════════════════════
   ECG WAVEFORM β€” built in JS, set on SVG path
═══════════════════════════════════════════════════════════════ */
(function buildECG() {
  /*
   * Cycle width = 140px, height = 60, baseline = y=30.
   * Denser waveform so the whole header is filled with visible spikes.
   * SVG width = screen width + 2 extra cycles so there is never a gap.
   */
  const W  = 140;   // cycle width β€” must match CSS keyframe translateX
  const BL = 30;    // baseline y
  const cycle = [   // [x_offset, y_relative_to_baseline]
    [0,0],[18,0],
    [21,-3],[24,-8],[27,-3],[30,0],    // P wave
    [35,0],[37,4],[40,-34],[44,10],[47,0], // QRS complex
    [50,0],[53,-2],[56,-8],[60,-13],[64,-8],[68,0], // T wave
    [W,0],                             // flat to next cycle
  ];

  function buildPath(cycles) {
    let d = '';
    for (let c = 0; c < cycles; c++) {
      cycle.forEach(([x, dy], i) => {
        const cmd = (c === 0 && i === 0) ? 'M' : 'L';
        d += `${cmd}${c * W + x},${BL + dy} `;
      });
    }
    return d.trim();
  }

  function init() {
    const screenW = window.innerWidth;
    const cycles  = Math.ceil(screenW / W) + 3; // extra cycles for seamless fill
    const svg     = document.getElementById('ecgSvg');
    svg.setAttribute('width',  cycles * W);
    svg.setAttribute('viewBox',`0 0 ${cycles * W} 60`);
    document.getElementById('ecgPath').setAttribute('d', buildPath(cycles));
    svg.classList.add('playing');
  }

  init();
  window.addEventListener('resize', init);
})();

function setECGColor(color) {
  document.querySelector('.ecg-path').style.stroke = color;
  document.querySelector('.ecg-base').style.stroke = color;
}

/* ═══════════════════════════════════════════════════════════════
   BLOOD-CELL CANVAS PARTICLES
═══════════════════════════════════════════════════════════════ */
(function initCanvas() {
  const canvas = document.getElementById('bgCanvas');
  const ctx    = canvas.getContext('2d');

  function resize() {
    canvas.width  = window.innerWidth;
    canvas.height = window.innerHeight;
  }
  resize();
  window.addEventListener('resize', resize);

  const CELLS = Array.from({length: 28}, () => ({
    x:   Math.random() * window.innerWidth,
    y:   Math.random() * window.innerHeight,
    rx:  7 + Math.random() * 11,
    vy:  -(0.18 + Math.random() * 0.35),
    vx:  (Math.random() - .5) * 0.25,
    ang: Math.random() * Math.PI,
    va:  (Math.random() - .5) * 0.006,
    op:  0.025 + Math.random() * 0.04,
  }));

  function drawFrame() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    CELLS.forEach(c => {
      ctx.save();
      ctx.translate(c.x, c.y);
      ctx.rotate(c.ang);
      /* outer cell body */
      ctx.beginPath();
      ctx.ellipse(0, 0, c.rx, c.rx * 0.58, 0, 0, Math.PI * 2);
      ctx.fillStyle = `rgba(200,40,60,${c.op})`;
      ctx.fill();
      /* biconcave dimple */
      ctx.beginPath();
      ctx.ellipse(0, 0, c.rx * 0.52, c.rx * 0.22, 0, 0, Math.PI * 2);
      ctx.fillStyle = `rgba(0,4,12,${c.op * 1.6})`;
      ctx.fill();
      ctx.restore();

      c.x   += c.vx;
      c.y   += c.vy;
      c.ang += c.va;
      if (c.y < -25)               { c.y = canvas.height + 25; c.x = Math.random() * canvas.width; }
      if (c.x < -25)               c.x = canvas.width + 25;
      if (c.x > canvas.width + 25) c.x = -25;
    });
    requestAnimationFrame(drawFrame);
  }
  drawFrame();
})();

/* ═══════════════════════════════════════════════════════════════
   CLINICAL STATUS TAGS β€” update as sliders move
═══════════════════════════════════════════════════════════════ */
const STATUS_MAP = {
  glucose: [
    { max:100, lbl:'Normal',      css:'var(--lo-s)', brd:'var(--lo-b)', col:'#34D399' },
    { max:126, lbl:'Pre-Diabetic',css:'var(--mo-s)', brd:'var(--mo-b)', col:'#FB923C' },
    { max:999, lbl:'Diabetic',    css:'var(--hi-s)', brd:'var(--hi-b)', col:'#FB7185' },
  ],
  bmi: [
    { max:18.5, lbl:'Underweight',css:'var(--mo-s)',brd:'var(--mo-b)',col:'#FB923C' },
    { max:25,   lbl:'Normal',     css:'var(--lo-s)',brd:'var(--lo-b)',col:'#34D399' },
    { max:30,   lbl:'Overweight', css:'var(--mo-s)',brd:'var(--mo-b)',col:'#FB923C' },
    { max:999,  lbl:'Obese',      css:'var(--hi-s)',brd:'var(--hi-b)',col:'#FB7185' },
  ],
  blood_pressure: [
    { max:80,  lbl:'Normal',   css:'var(--lo-s)',brd:'var(--lo-b)',col:'#34D399' },
    { max:90,  lbl:'Elevated', css:'var(--mo-s)',brd:'var(--mo-b)',col:'#FB923C' },
    { max:999, lbl:'High',     css:'var(--hi-s)',brd:'var(--hi-b)',col:'#FB7185' },
  ],
  insulin: [
    { max:100, lbl:'Normal',  css:'var(--lo-s)',brd:'var(--lo-b)',col:'#34D399' },
    { max:166, lbl:'Elevated',css:'var(--mo-s)',brd:'var(--mo-b)',col:'#FB923C' },
    { max:999, lbl:'High',    css:'var(--hi-s)',brd:'var(--hi-b)',col:'#FB7185' },
  ],
};

function updateStatus(id, val) {
  const tag = document.getElementById(`st-${id}`);
  if (!tag) return;
  const rules = STATUS_MAP[id];
  if (!rules) { tag.style.display = 'none'; return; }

  const r   = rules.find(r => +val <= r.max) || rules[rules.length - 1];
  const rng = document.getElementById(`r-${id}`);
  const num = document.getElementById(id);

  tag.textContent        = r.lbl;
  tag.style.display      = 'inline-flex';
  tag.style.background   = r.css;
  tag.style.border       = `1px solid ${r.brd}`;
  tag.style.color        = r.col;

  /* tint the slider thumb to match */
  if (rng) {
    rng.style.setProperty('--track-fill', r.col);
    rng.style.setProperty('--thumb-color', r.col);
    rng.style.setProperty('--thumb-glow', r.css);
  }
}

/* ═══════════════════════════════════════════════════════════════
   SLIDER ↔ NUMBER SYNC
═══════════════════════════════════════════════════════════════ */
function updateSliderProgress(rng) {
  const mn  = +rng.min, mx = +rng.max, val = +rng.value;
  const pct = ((val - mn) / (mx - mn) * 100).toFixed(1) + '%';
  rng.style.setProperty('--pct', pct);
}

function sync(id, val, fromNum = false) {
  const rng = document.getElementById(`r-${id}`);
  const num = document.getElementById(id);
  if (!fromNum && rng) { num.value = parseFloat(val); }
  if (fromNum  && rng) { rng.value = parseFloat(val); }
  if (rng) updateSliderProgress(rng);
  updateStatus(id, val);
}

/* initialise all sliders on load */
['pregnancies','glucose','blood_pressure','skin_thickness','insulin','bmi','dpf','age'].forEach(id => {
  const rng = document.getElementById(`r-${id}`);
  if (rng) { updateSliderProgress(rng); updateStatus(id, rng.value); }
});

/* ═══════════════════════════════════════════════════════════════
   PRESETS
═══════════════════════════════════════════════════════════════ */
const PRESETS = {
  low:      { pregnancies:1,  glucose:88,  blood_pressure:66, skin_thickness:16, insulin:48,  bmi:21.6, dpf:0.17, age:24 },
  moderate: { pregnancies:3,  glucose:128, blood_pressure:77, skin_thickness:27, insulin:138, bmi:30.2, dpf:0.42, age:37 },
  high:     { pregnancies:7,  glucose:174, blood_pressure:90, skin_thickness:44, insulin:295, bmi:43.1, dpf:0.93, age:57 },
};

function loadPreset(key) {
  const p = PRESETS[key];
  const map = { pregnancies:'pregnancies', glucose:'glucose', blood_pressure:'blood_pressure',
                skin_thickness:'skin_thickness', insulin:'insulin', bmi:'bmi', dpf:'dpf', age:'age' };
  Object.entries(map).forEach(([fid, pk]) => {
    const val = p[pk];
    document.getElementById(fid).value = val;
    const rng = document.getElementById(`r-${fid}`);
    if (rng) { rng.value = val; updateSliderProgress(rng); }
    updateStatus(fid, val);
  });
}

/* ═══════════════════════════════════════════════════════════════
   UI HELPERS
═══════════════════════════════════════════════════════════════ */
function setErr(msg) {
  const box = document.getElementById('errBox');
  document.getElementById('errTxt').textContent = msg;
  box.classList.toggle('show', !!msg);
}

function setLoading(on) {
  const btn = document.getElementById('runBtn');
  const rc  = document.getElementById('resultCard');
  btn.disabled = on;
  btn.classList.toggle('loading', on);
  document.getElementById('btnTxt').textContent = on ? 'Analyzing…' : 'Run Analysis';
  rc.classList.toggle('scanning', on);
}

/* ═══════════════════════════════════════════════════════════════
   GAUGE
═══════════════════════════════════════════════════════════════ */
function animateGauge(prob, level) {
  const r   = RISK[level] || RISK.low;
  const arc = document.getElementById('gFill');
  const out = document.getElementById('gOuter');
  const pct = document.getElementById('gPct');

  arc.style.strokeDashoffset = (CIRC * (1 - prob)).toFixed(2);
  arc.style.stroke           = r.color;
  out.style.strokeDashoffset = (CIRC * (1 - prob)).toFixed(2);
  out.style.stroke           = r.color;

  pct.textContent  = `${Math.round(prob * 100)}%`;
  pct.style.color  = r.light;
}

/* ═══════════════════════════════════════════════════════════════
   SHAP β€” PLAIN-LANGUAGE HELPERS
═══════════════════════════════════════════════════════════════ */
const FEATURE_LABELS = {
  'Glucose':                  'Blood Sugar',
  'BMI':                      'Body Mass Index',
  'Age':                      'Age',
  'Insulin':                  'Insulin Level',
  'DiabetesPedigreeFunction': 'Family History Score',
  'BloodPressure':            'Blood Pressure',
  'SkinThickness':            'Skin Thickness',
  'Pregnancies':              'No. of Pregnancies',
  'Glucose_BMI':              'Sugar Γ— BMI Combined',
  'Age_BMI':                  'Age Γ— BMI Combined',
  'Glucose_squared':          'High Blood Sugar Intensity',
  'Insulin_BMI':              'Insulin Γ— BMI Combined',
};

function impactLevel(absVal) {
  if (absVal >= 0.30) return { label: 'Strong',   cls: 'strong'   };
  if (absVal >= 0.10) return { label: 'Moderate', cls: 'moderate' };
  return                     { label: 'Low',      cls: 'low'      };
}

function plainName(feature) {
  return FEATURE_LABELS[feature] || feature;
}

function generateSummary(contributions) {
  const pos = contributions.filter(c => c.direction === 'increases risk');
  const neg = contributions.filter(c => c.direction !== 'increases risk');

  let s1 = '';
  if (pos.length >= 2) {
    s1 = `<strong>${plainName(pos[0].feature)}</strong> and <strong>${plainName(pos[1].feature)}</strong> are the main factors raising this patient's risk.`;
  } else if (pos.length === 1) {
    s1 = `<strong>${plainName(pos[0].feature)}</strong> is the main factor raising this patient's risk.`;
  } else {
    s1 = 'No single factor is strongly increasing this patient\'s risk.';
  }

  let s2 = '';
  if (neg.length >= 2) {
    s2 = `<strong>${plainName(neg[0].feature)}</strong> and <strong>${plainName(neg[1].feature)}</strong> are helping to keep the risk lower.`;
  } else if (neg.length === 1) {
    s2 = `<strong>${plainName(neg[0].feature)}</strong> is helping to keep the risk lower.`;
  } else {
    s2 = 'No significant protective factors were identified.';
  }

  return s1 + ' ' + s2;
}

/* ═══════════════════════════════════════════════════════════════
   SHAP BARS
═══════════════════════════════════════════════════════════════ */
function renderShap(contributions) {
  const wrap = document.getElementById('shapBars');
  wrap.innerHTML = '';
  const maxA = Math.max(...contributions.map(c => Math.abs(c.shap_value)), 1e-6);

  /* plain-language summary */
  const summaryDiv = document.createElement('div');
  summaryDiv.className = 'shap-summary';
  summaryDiv.innerHTML = generateSummary(contributions);
  wrap.appendChild(summaryDiv);

  /* legend */
  const legend = document.createElement('div');
  legend.className = 'shap-legend';
  legend.innerHTML = `
    <div class="legend-item"><div class="legend-dot p"></div>Increases risk</div>
    <div class="legend-item"><div class="legend-dot n"></div>Decreases risk</div>`;
  wrap.appendChild(legend);

  /* bars */
  contributions.forEach((c, i) => {
    const pos    = c.direction === 'increases risk';
    const pct    = (Math.abs(c.shap_value) / maxA * 100).toFixed(1);
    const absV   = Math.abs(c.shap_value);
    const impact = impactLevel(absV);
    const label  = plainName(c.feature);
    const sign   = pos ? '+' : 'βˆ’';

    const row = document.createElement('div');
    row.className = 'sh-row';
    row.style.animationDelay = `${i * 38}ms`;
    row.setAttribute('role', 'listitem');
    row.setAttribute('aria-label', `${label}: ${impact.label} impact β€” ${c.direction}`);
    row.title = `${c.feature}: SHAP ${pos ? '+' : ''}${c.shap_value.toFixed(4)}`;

    row.innerHTML = `
      <span class="sh-nm">${label}</span>
      <div class="sh-track" aria-hidden="true">
        <div class="sh-bar ${pos ? 'p' : 'n'}" style="width:${pct}%"></div>
      </div>
      <span class="sh-badge ${impact.cls}" title="SHAP ${sign}${absV.toFixed(3)}">${impact.label}</span>`;

    wrap.appendChild(row);
  });
}

/* ═══════════════════════════════════════════════════════════════
   SHOW RESULT
═══════════════════════════════════════════════════════════════ */
function showResult(data) {
  const level = (data.risk_level || 'low').toLowerCase();
  const r     = RISK[level] || RISK.low;

  /* ECG changes colour to match risk */
  setECGColor(r.ecg);

  /* Badge */
  const badge = document.getElementById('rBadge');
  badge.className = `r-badge ${level}`;
  badge.innerHTML = `
    <svg width="7" height="7" viewBox="0 0 8 8" aria-hidden="true">
      <circle cx="4" cy="4" r="4" fill="${r.color}"/>
    </svg>
    ${r.label}`;

  /* Gauge */
  animateGauge(data.probability, level);

  /* Stats */
  const lbl = document.getElementById('sLabel');
  lbl.textContent = data.prediction;
  lbl.style.color = r.light;
  document.getElementById('sProb').textContent = `${(data.probability * 100).toFixed(1)}%`;

  /* SHAP */
  if (Array.isArray(data.contributions)) renderShap(data.contributions);

  /* Reveal */
  document.getElementById('emptyS').style.display = 'none';
  const out = document.getElementById('resOut');
  out.classList.remove('show');
  void out.offsetWidth;
  out.classList.add('show');
}

/* ═══════════════════════════════════════════════════════════════
   MAIN β€” RUN ANALYSIS
═══════════════════════════════════════════════════════════════ */
async function runAnalysis() {
  setErr('');
  setLoading(true);

  const IDS = ['pregnancies','glucose','blood_pressure','skin_thickness','insulin','bmi','dpf','age'];
  const API_KEYS = ['pregnancies','glucose','blood_pressure','skin_thickness','insulin','bmi','diabetes_pedigree_function','age'];
  const payload = {};

  for (let i = 0; i < IDS.length; i++) {
    const v = parseFloat(document.getElementById(IDS[i]).value);
    if (isNaN(v)) {
      setErr(`"${IDS[i].replace(/_/g,' ')}" is not a valid number.`);
      setLoading(false);
      return;
    }
    payload[API_KEYS[i]] = v;
  }

  try {
    const res  = await fetch(`${API}/predict/explain`, {
      method:'POST',
      headers:{'Content-Type':'application/json'},
      body:JSON.stringify(payload),
    });
    const data = await res.json();
    if (!res.ok) { setErr(data.error || `Server error (${res.status}).`); setLoading(false); return; }
    showResult(data);
  } catch {
    setErr('Cannot reach the API β€” ensure Flask is running on localhost:5000.');
  } finally {
    setLoading(false);
  }
}
</script>
</body>
</html>