* {
      box-sizing: border-box;
    }

    html, body {
      height: 100%;
      margin: 0;
      font-family: Arial, sans-serif;
      background: #121212;
    }

    body {
      display: flex;
      flex-direction: column;
    }

    .content {
      flex: 1;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 20px;
    }

    form {
      width: 700px;
      background: white;
      padding: 40px 50px;
      border-radius: 8px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    }

    label {
      display: block;
      margin-bottom: 8px;
      font-weight: 600;
      font-size: 1.1rem;
    }

    input[type="email"],
    textarea {
      width: 100%;
      padding: 14px 16px;
      margin-bottom: 20px;
      border: 1px solid #ccc;
      border-radius: 6px;
      font-size: 1.2rem;
      resize: vertical;
    }

    button {
      background-color: #00c4a7;
      color: white;
      border: none;
      padding: 16px 0;
      border-radius: 6px;
      cursor: pointer;
      font-size: 1.3rem;
      font-weight: 600;
      width: 100%;
      transition: background-color 0.3s ease;
    }

    button:hover {
      background-color: #009a81;
    }

    .error {
      color: #b10000;
      font-weight: bold;
      margin-bottom: 20px;
      background: #ffe5e5;
      padding: 12px;
      border-radius: 6px;
    }