const themeColor = "#FFD700"; // Gold accent color
  const secondaryColor = "#FF6B35"; // Orange accent
  const riskyIndices = [0, 4, 12, 20, 24]; // corners + center (0-based)

  // Inject styles
  const style = document.createElement("style");
  style.innerHTML = `
    @import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600;700;800;900&display=swap');

    #gold-ui {
      position: fixed;
      top: 20px;
      right: 20px;
      width: 420px;
      max-width: 90vw;
      max-height: 90vh;
      background: linear-gradient(145deg, #0a0a0f 0%, #1a1a25 50%, #0f0f18 100%);
      border: 2px solid transparent;
      background-clip: padding-box;
      border-radius: 20px;
      font-family: 'Inter', 'Segoe UI', sans-serif;
      color: white;
      user-select: none;
      z-index: 99999;
      touch-action: none;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow:
        0 0 0 1px rgba(255, 215, 0, 0.2),
        0 25px 50px rgba(0, 0, 0, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(20px);
    }

    #gold-ui::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      border-radius: 20px;
      padding: 2px;
      background: linear-gradient(45deg, #FFD700, #FF6B35, #8A2BE2, #FFD700);
      background-size: 400% 400%;
      animation: gradientShift 8s ease infinite;
      mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
      mask-composite: subtract;
    }

    @keyframes gradientShift {
      0%, 100% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
    }

    #gold-header {
      background: linear-gradient(135deg, rgba(255, 215, 0, 0.1) 0%, rgba(255, 107, 53, 0.05) 100%);
      padding: 24px 28px;
      cursor: move;
      position: relative;
      border-bottom: 1px solid rgba(255, 215, 0, 0.2);
      backdrop-filter: blur(10px);
    }

    .header-glow {
      position: absolute;
      top: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 200px;
      height: 2px;
      background: linear-gradient(90deg, transparent, #FFD700, transparent);
      opacity: 0.8;
    }

    .header-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
      position: relative;
    }

    .brand-section {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .logo-container {
      width: 48px;
      height: 48px;
      background: linear-gradient(135deg, #FFD700, #FF6B35);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      box-shadow: 0 8px 32px rgba(255, 215, 0, 0.3);
    }

    .logo-container::before {
      content: '';
      position: absolute;
      inset: -2px;
      border-radius: 14px;
      background: linear-gradient(45deg, #FFD700, #FF6B35, #8A2BE2);
      z-index: -1;
      opacity: 0.7;
      animation: logoGlow 3s ease-in-out infinite alternate;
    }

    @keyframes logoGlow {
      0% { opacity: 0.7; transform: scale(1); }
      100% { opacity: 1; transform: scale(1.05); }
    }

    .logo-text {
      font-family: 'JetBrains Mono', monospace;
      font-size: 18px;
      font-weight: 800;
      color: #0a0a0f;
      text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    }

    .brand-info {
      display: flex;
      flex-direction: column;
    }

    .brand-title {
      font-size: 24px;
      font-weight: 900;
      background: linear-gradient(135deg, #FFD700, #FF6B35);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      text-transform: uppercase;
      letter-spacing: 2px;
      margin-bottom: 2px;
    }

    .brand-subtitle {
      font-size: 11px;
      color: rgba(255, 215, 0, 0.7);
      text-transform: uppercase;
      letter-spacing: 3px;
      font-weight: 600;
    }

    .header-controls {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .status-indicator {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      background: rgba(0, 0, 0, 0.3);
      border-radius: 20px;
      border: 1px solid rgba(255, 215, 0, 0.3);
    }

    .status-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #00ff88;
      animation: pulse 2s ease-in-out infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.6; transform: scale(1.2); }
    }

    .status-text {
      font-size: 10px;
      color: #00ff88;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    #gold-close-btn {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: rgba(255, 255, 255, 0.7);
      font-weight: 700;
      font-size: 16px;
      cursor: pointer;
      width: 36px;
      height: 36px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.3s ease;
      backdrop-filter: blur(10px);
    }

    #gold-close-btn:hover {
      background: rgba(255, 107, 53, 0.2);
      border-color: #FF6B35;
      color: #FF6B35;
      transform: scale(1.1);
    }

    #gold-content {
      padding: 28px;
      display: flex;
      flex-direction: column;
      gap: 24px;
      overflow-y: auto;
      position: relative;
    }

    .content-glow {
      position: absolute;
      top: -50px;
      left: 50%;
      transform: translateX(-50%);
      width: 300px;
      height: 100px;
      background: radial-gradient(ellipse, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
      pointer-events: none;
    }

    .prediction-section {
      background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, rgba(255, 107, 53, 0.03) 100%);
      border: 1px solid rgba(255, 215, 0, 0.2);
      border-radius: 16px;
      padding: 24px;
      position: relative;
      overflow: hidden;
    }

    .prediction-section::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.1), transparent);
      animation: shimmer 3s ease-in-out infinite;
    }

    @keyframes shimmer {
      0% { left: -100%; }
      100% { left: 100%; }
    }

    .section-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
      position: relative;
    }

    .section-title {
      font-size: 16px;
      font-weight: 700;
      color: white;
      text-transform: uppercase;
      letter-spacing: 2px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .section-title::before {
      content: '⚡';
      font-size: 18px;
      animation: rotate 4s linear infinite;
    }

    @keyframes rotate {
      from { transform: rotate(0deg); }
      to { transform: rotate(360deg); }
    }

    .mines-input-container {
      position: relative;
    }

    .mines-count-input {
      background: rgba(0, 0, 0, 0.4);
      border: 2px solid rgba(255, 215, 0, 0.3);
      color: white;
      padding: 12px 16px;
      border-radius: 12px;
      font-size: 14px;
      width: 120px;
      outline: none;
      text-align: center;
      font-weight: 600;
      transition: all 0.3s ease;
      backdrop-filter: blur(10px);
    }

    .mines-count-input:focus {
      border-color: #FFD700;
      box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
      transform: scale(1.05);
    }

    .mines-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 8px;
      margin: 24px 0;
      padding: 20px;
      background: rgba(0, 0, 0, 0.3);
      border-radius: 16px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      position: relative;
      backdrop-filter: blur(10px);
    }

    .mines-grid::before {
      content: '';
      position: absolute;
      inset: 0;
      border-radius: 16px;
      background: linear-gradient(45deg, rgba(255, 215, 0, 0.1), rgba(255, 107, 53, 0.05));
      opacity: 0.5;
    }

    .grid-tile {
      aspect-ratio: 1;
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      cursor: pointer;
      transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
      position: relative;
      overflow: hidden;
      backdrop-filter: blur(5px);
    }

    .grid-tile::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
      transform: translateX(-100%);
      transition: transform 0.6s ease;
    }

    .grid-tile:hover::before {
      transform: translateX(100%);
    }

    .grid-tile:hover {
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.1));
      transform: scale(1.1) translateY(-2px);
      box-shadow: 0 8px 25px rgba(255, 215, 0, 0.2);
    }

    .grid-tile.safe {
      background: linear-gradient(135deg, #FFD700, #FF6B35);
      border-color: #FFD700;
      color: #0a0a0f;
      transform: scale(1.15) translateY(-4px);
      box-shadow:
        0 0 30px rgba(255, 215, 0, 0.6),
        0 8px 25px rgba(255, 215, 0, 0.4);
      animation: safeGlow 2s ease-in-out infinite alternate;
    }

    @keyframes safeGlow {
      0% { box-shadow: 0 0 30px rgba(255, 215, 0, 0.6), 0 8px 25px rgba(255, 215, 0, 0.4); }
      100% { box-shadow: 0 0 40px rgba(255, 215, 0, 0.8), 0 12px 35px rgba(255, 215, 0, 0.6); }
    }

    .grid-tile.safe::after {
      content: '💎';
      font-size: 20px;
      animation: bounce 1s ease-in-out infinite alternate;
    }

    @keyframes bounce {
      0% { transform: scale(1); }
      100% { transform: scale(1.2); }
    }

    .control-section {
      display: flex;
      gap: 12px;
      margin-top: 20px;
    }

    .predict-button {
      flex: 2;
      background: linear-gradient(135deg, #FFD700, #FF6B35);
      border: none;
      border-radius: 14px;
      padding: 16px 24px;
      font-size: 14px;
      font-weight: 700;
      color: #0a0a0f;
      cursor: pointer;
      transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
      text-transform: uppercase;
      letter-spacing: 2px;
      position: relative;
      overflow: hidden;
      box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
    }

    .predict-button::before {
      content: '';
      position: absolute;
      top: 0;
      left: -100%;
      width: 100%;
      height: 100%;
      background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
      transition: left 0.5s ease;
    }

    .predict-button:hover::before {
      left: 100%;
    }

    .predict-button:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 35px rgba(255, 215, 0, 0.4);
    }

    .predict-button:active {
      transform: translateY(-1px);
    }

    .predict-button:disabled {
      background: linear-gradient(135deg, #555, #333);
      cursor: not-allowed;
      transform: none;
      box-shadow: none;
    }

    .reset-button {
      flex: 1;
      background: rgba(255, 255, 255, 0.1);
      border: 2px solid rgba(255, 255, 255, 0.2);
      border-radius: 14px;
      padding: 16px 20px;
      font-size: 14px;
      font-weight: 600;
      color: rgba(255, 255, 255, 0.8);
      cursor: pointer;
      transition: all 0.3s ease;
      text-transform: uppercase;
      letter-spacing: 1px;
      backdrop-filter: blur(10px);
    }

    .reset-button:hover {
      background: rgba(255, 107, 53, 0.2);
      border-color: #FF6B35;
      color: #FF6B35;
      transform: translateY(-2px);
    }

    .status-bar {
      background: linear-gradient(135deg, rgba(0, 0, 0, 0.4), rgba(255, 215, 0, 0.05));
      border: 1px solid rgba(255, 215, 0, 0.2);
      padding: 16px 20px;
      border-radius: 12px;
      text-align: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.8);
      min-height: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      backdrop-filter: blur(10px);
      font-weight: 500;
    }

    .success-message {
      color: #00ff88;
      font-weight: 600;
      text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
    }

    .error-message {
      color: #ff4757;
      font-weight: 600;
      text-shadow: 0 0 10px rgba(255, 71, 87, 0.5);
    }

    .loading-message {
      color: #FFD700;
      font-weight: 600;
      text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    }

    .footer-info {
      text-align: center;
      font-size: 10px;
      color: rgba(255, 255, 255, 0.4);
      text-transform: uppercase;
      letter-spacing: 2px;
      padding-top: 16px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      font-weight: 500;
    }

    @media (max-width: 480px) {
      #gold-ui {
        width: 95vw;
        top: 10px !important;
        right: 2.5vw !important;
        left: 2.5vw !important;
        border-radius: 16px;
      }

      .mines-grid {
        gap: 6px;
        padding: 16px;
      }

      #gold-content {
        padding: 20px;
      }

      .brand-title {
        font-size: 20px;
      }

      .logo-container {
        width: 40px;
        height: 40px;
      }

      .control-section {
        flex-direction: column;
      }
    }
  `;
  document.head.appendChild(style);

  // Build UI
  const container = document.createElement("div");
  container.id = "gold-ui";
  container.innerHTML = `
    <div id="gold-header">
      <div class="header-glow"></div>
      <div class="header-content">
        <div class="brand-section">
          <div class="logo-container">
            <div class="logo-text">G</div>
          </div>
          <div class="brand-info">
            <div class="brand-subtitle">Gold Predictions</div>
          </div>
        </div>
        <div class="header-controls">
          </div>
          <button id="gold-close-btn">×</button>
        </div>
      </div>
    </div>

    <div id="gold-content">
      <div class="content-glow"></div>

      <div class="prediction-section">
        <div class="section-header">
          <div class="section-title">Mines</div>
          <div class="mines-input-container">
            <input type="number" class="mines-count-input" id="tile-count" placeholder="Safe tiles" min="1" max="24" value="4" />
          </div>
        </div>

        <div class="mines-grid" id="mines-grid">
          ${Array.from({length: 25}, (_, i) => `<div class="grid-tile" data-index="${i}"></div>`).join('')}
        </div>

        <div class="control-section">
          <button class="predict-button" id="predict-btn">🎯 Predict</button>
          <button class="reset-button" id="reset-btn">🔄 Reset</button>
        </div>
      </div>

      <div class="status-bar" id="status-bar">
        🚀 Ready to predict - Gold Predictions
      </div>

      <div class="footer-info">
        Gold Predictions v1.0 - Free Edition
      </div>
    </div>
  `;
  document.body.appendChild(container);