body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
}

.grey-box-activity {
    width: 100%;
    background-color: #D31ADE;
    padding-top: 10px;
    padding-bottom: 15px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 6px 6px rgba(0, 0, 0, 0.1);
}

input[type="text"] {
    font-size: 16px;
}

.smooth-button {
    background-color: white;
    color: black;
    padding: 14px 28px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
  }

.smooth-button:hover {
    background-color: #357ABD;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
  }

.smooth-button:disabled {
    background-color: #ccc;
    color: #666;
    cursor: not-allowed;
    border: 1px solid #999;
    opacity: 0.6;
}