body {
      margin: 0;
      padding: 20px;
      font-family: 'Nunito', sans-serif;
      background: #fff;
      color: #111;
    }
    .container {
      max-width: 600px;
      margin: auto;
    }
    h2 {
      font-size: 32px;
      margin-bottom: 10px;
      text-align: left;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    nav {
      display: flex;
      flex-direction: row;
      gap: 20px;
      padding: 4px 0;
      font-size: 15px;
      justify-content: flex-start;
      align-items: center;
      max-width: 600px;
      margin: 0 auto 12px auto;
    }
    nav a {
      text-decoration: none;
      color: #111;
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 10px 14px;
      border: 1px solid #ccc;
      border-radius: 10px;
      transition: background 0.3s ease;
    }
    nav a:hover {
      background: #f0f0f0;
    }
    .description {
      margin-bottom: 20px;
      font-size: 15px;
      color: #444;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    ul {
      list-style: none;
      padding-left: 0;
    }
    li {
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      color: #333;
    }
    li svg {
      margin-right: 8px;
      color: green;
      flex-shrink: 0;
    }
    .file-item {
      border: 1px solid #ccc;
      padding: 12px;
      margin-bottom: 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-radius: 10px;
      font-size: 15px;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    .file-type {
      display: flex;
      align-items: center;
    }
    .file-details {
      margin-left: 10px;
    }
    .file-name {
      font-weight: 600;
    }
    .file-size {
      font-size: 13px;
      color: #666;
    }
    .lock-icon {
      color: #999;
    }
    .email-input {
      margin-bottom: 20px;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    .email-input label {
      font-size: 15px;
      display: block;
      margin-bottom: 6px;
    }
    .email-input input {
      width: 100%;
      padding: 12px;
      font-size: 15px;
      border: 1px solid #ccc;
      border-radius: 10px;
      box-sizing: border-box;
    }
    .complete-btn {
      background: black;
      color: white;
      border: none;
      padding: 14px;
      font-size: 16px;
      border-radius: 12px;
      width: 100%;
      cursor: pointer;
      margin-top: 10px;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
    }
    .popup {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background-color: #111;
      color: #fff;
      padding: 14px;
      font-size: 15px;
      text-align: center;
      opacity: 0;
      pointer-events: none;
      z-index: 9999;
      transition: opacity 0.3s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
    }
    .popup.show {
      opacity: 1;
      animation: slideUp 0.4s ease;
      pointer-events: auto;
    }
    .loading {
      opacity: 0.6;
      pointer-events: none;
}
    .popup-icon {
      color: yellow;
    }
    .svg-yellow {
      color: yellow;
    }

    @keyframes slideUp {
      from {
        transform: translateY(100%);
        opacity: 0;
      }
      to {
        transform: translateY(0);
        opacity: 1;
      }
    }