body {
      margin: 0;
      min-height: 100vh;
      background: linear-gradient(135deg, #040c18 0%, #071628 50%, #0a1e3c 100%);
      overflow-x: hidden;
      color: #e0f4ff;
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    }
    #ui {
      position: fixed;
      z-index: 100;
      top: 15px;
      left: 15px;
      background: rgba(80, 170, 255, 0.08);
      backdrop-filter: blur(32px) saturate(180%);
      -webkit-backdrop-filter: blur(32px) saturate(180%);
      border-radius: 20px;
      padding: 20px 25px 25px 25px;
      max-width: 900px;
      max-height: 85vh;
      overflow-y: auto;
      user-select: none;
      border: 1px solid rgba(100, 200, 255, 0.45);
      box-shadow: 0 0 0 1px rgba(100,200,255,0.1), 0 0 30px rgba(80,180,255,0.15), 0 8px 32px rgba(0,80,200,0.2), inset 0 1px 0 rgba(180,230,255,0.1);
    }
    #ui::-webkit-scrollbar {
      width: 6px;
    }
    #ui::-webkit-scrollbar-track {
      background: rgba(0,0,0,0.3);
      border-radius: 3px;
    }
    #ui::-webkit-scrollbar-thumb {
      background: rgba(100,200,255,0.5);
      border-radius: 3px;
    }
    #ui::-webkit-scrollbar-thumb:hover {
      background: rgba(100,200,255,0.85);
    }
    .panel {
      margin-bottom: 18px;
      padding: 12px;
      background: rgba(255,255,255,0.02);
      border-radius: 12px;
      border: 1px solid rgba(100,200,255,0.2);
    }
    .panel-title {
      font-size: 16px;
      font-weight: 600;
      color: #7dd3fc;
      text-shadow: 0 0 10px rgba(100,200,255,0.7);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .panel-title::before {
      content: "✦";
      font-size: 14px;
    }
    #controls, #extra, #morefx, #fx2, #audioPanel, #watermarkPanel, #backgroundPanel, #particlePanel {margin-bottom:12px;}
    input, select, button {
      margin: 4px 8px 4px 4px;
      border-radius: 8px;
      border: 1px solid rgba(100,200,255,0.25);
      background: rgba(80,170,255,0.08);
      color: #fff;
      padding: 6px 10px;
      font-size: 14px;
      transition: all 0.2s;
    }
    input:focus, select:focus {
      outline: none;
      box-shadow: 0 0 0 2px rgba(100,200,255,0.5), 0 0 12px rgba(80,180,255,0.3);
      background: rgba(255,255,255,0.12);
    }
    button {
      cursor: pointer;
      background: linear-gradient(135deg, #38bdf8, #0ea5e9);
      color: #fff;
      font-weight: 600;
      border: none;
      padding: 8px 16px;
      box-shadow: 0 4px 12px rgba(56,189,248,0.35), 0 0 18px rgba(56,189,248,0.2);
    }
    button:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(56,189,248,0.5), 0 0 24px rgba(56,189,248,0.3);
    }
    .rec-btn {
      font-size: 16px; 
      background: linear-gradient(135deg, #ff6b6b, #ee5a52);
      color: white;
      padding: 10px 20px;
      margin-right: 12px;
      box-shadow: 0 4px 15px rgba(255,107,107,0.4);
    }
    .rec-btn:hover {background: linear-gradient(135deg, #ff5252, #d32f2f);}
    .slider {width: 100px;}
    .small-input {width: 55px;}
    .label {
      font-size: 14px;
      font-weight: 500;
      color: #e0e0e0;
      display: inline-block;
      min-width: 120px;
    }
    canvas {
      display: block;
      margin: 60px auto 0 auto;
      border-radius: 24px;
      box-shadow: 
        0 12px 48px rgba(0,0,0,0.6),
        0 0 60px rgba(80,180,255,0.25),
        inset 0 1px 0 rgba(255,255,255,0.1);
      outline: none;
      background: transparent;
      border: 1px solid rgba(100,200,255,0.2);
    }
    #status {font-size: 15px; color: #7dd3fc; text-shadow: 0 0 8px rgba(100,200,255,0.6); margin-left: 12px;}
    ::selection {background: rgba(100,200,255,0.3);}

    /* Render progress bar */
    #renderProgressWrap {
      margin-top: 10px;
      display: none;
    }
    #renderProgressBar {
      width: 100%;
      height: 10px;
      -webkit-appearance: none;
      appearance: none;
      border-radius: 6px;
      overflow: hidden;
      background: rgba(80,170,255,0.12);
      border: 1px solid rgba(100,200,255,0.25);
    }
    #renderProgressBar::-webkit-progress-bar {
      background: rgba(80,170,255,0.12);
    }
    #renderProgressBar::-webkit-progress-value {
      background: linear-gradient(90deg, #0ea5e9, #38bdf8);
      box-shadow: 0 0 8px rgba(56,189,248,0.6);
      border-radius: 6px;
      transition: width 0.2s;
    }
    #renderProgressBar::-moz-progress-bar {
      background: linear-gradient(90deg, #0ea5e9, #38bdf8);
      border-radius: 6px;
    }
    #renderStatusText {
      font-size: 13px;
      color: #7dd3fc;
      margin-top: 6px;
      text-shadow: 0 0 8px rgba(100,200,255,0.5);
    }