:root {
      --gradient-start: #6a11cb;
      --gradient-end: #2575fc;
    }
    html, body {
      font-family: 'Inter', sans-serif;
      scroll-behavior: smooth;
    }
    .bg-gradient-modern {
      background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    }
    .glass {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(20px);
      border: 1px solid rgba(255, 255, 255, 0.2);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    .btn-modern {
      transition: all 0.3s ease;
      transform: translateY(0);
    }
    .btn-modern:hover {
      transform: translateY(-5px);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
    }
    .file-input-wrapper {
      position: relative;
      overflow: hidden;
    }
    .file-input-wrapper input[type=file] {
      position: absolute;
      left: -9999px;
    }
    .file-input-label {
      display: inline-block;
      padding: 10px 20px;
      cursor: pointer;
      background-color: rgba(255,255,255,0.1);
      border: 1px dashed rgba(255,255,255,0.3);
      border-radius: 10px;
    }
    .toast-notification {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      background-color: rgba(0, 0, 0, 0.7);
      color: white;
      padding: 10px 20px;
      border-radius: 10px;
      z-index: 1000;
      transition: opacity 0.3s ease-in-out;
    }