* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', sans-serif;
      background: linear-gradient(135deg, #0f172a, #1e3a8a);
      color: #ffffff;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: flex-start;
      padding: 60px 20px;
    }

    h1 {
      font-size: 3rem;
      font-weight: 800;
      background: linear-gradient(to right, #60a5fa, #c084fc);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 30px;
      text-align: center;
    }

    .card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 20px;
      padding: 30px;
      max-width: 600px;
      width: 100%;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
      backdrop-filter: blur(15px);
      -webkit-backdrop-filter: blur(15px);
    }

    .card h2 {
      font-size: 1.8rem;
      font-weight: 700;
      color: #93c5fd;
      margin-bottom: 10px;
    }

    .card p {
      color: #cbd5e1;
      font-size: 0.95rem;
      margin-bottom: 25px;
    }

    label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
      color: #e0f2fe;
    }

    input[type="file"] {
      width: 100%;
      padding: 10px;
      background-color: #1e293b;
      border: 1px solid #475569;
      border-radius: 8px;
      color: #cbd5e1;
      font-size: 0.9rem;
      cursor: pointer;
      transition: border-color 0.2s;
      margin-bottom: 25px;
    }

    input[type="file"]:hover {
      border-color: #60a5fa;
    }

    button {
      background: linear-gradient(to right, #3b82f6, #6366f1);
      color: white;
      border: none;
      padding: 12px 20px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: 10px;
      cursor: pointer;
      transition: all 0.3s ease;
      width: 100%;
    }

    button:hover {
      background: linear-gradient(to right, #2563eb, #4f46e5);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    }

    footer {
      margin-top: 40px;
      font-size: 0.85rem;
      color: #94a3b8;
    }

    @media (max-width: 600px) {
      h1 {
        font-size: 2.2rem;
      }

      .card {
        padding: 20px;
      }
    }


    .actions {
      margin-top: 20px;
    }

    input[type="file"] {
      margin-bottom: 20px;
    }


.checkbox-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  max-height: 600px;
  overflow-y: auto;
  padding: 10px;
  border-radius: 6px;
  font-family: sans-serif;
}

.checkbox-grid-container label {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.2s ease;
}

.checkbox-grid-container label:hover {
  background-color: #eef1f5;
}

.checkbox-grid-container input[type="checkbox"] {
  margin: 0;
}