body {
            font-family: "Inter", sans-serif;
            background-color: #f0f2f5;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            margin: 0;
            padding: 20px;
            box-sizing: border-box;
        }
        .container {
            background-color: #ffffff;
            padding: 30px;
            border-radius: 12px; /* Rounded corners for the container */
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            width: 100%;
            max-width: 500px;
            box-sizing: border-box;
        }
        h1 {
            color: #333;
            font-size: 2.25rem; /* text-4xl */
            font-weight: 700; /* font-bold */
            margin-bottom: 25px;
            text-align: center;
        }
        .form-row {
            display: flex;
            flex-direction: column;
            margin-bottom: 18px;
        }
        label {
            font-weight: 600; /* font-semibold */
            color: #555;
            margin-bottom: 8px;
            font-size: 1rem; /* text-base */
        }
        input[type="text"],
        select,
        textarea { /* Apply styles to textarea as well */
            padding: 12px 15px;
            border: 1px solid #d1d5db; /* border-gray-300 */
            border-radius: 8px; /* rounded-lg */
            font-size: 1rem;
            color: #374151; /* text-gray-700 */
            width: 100%; /* Ensure full width by default */
            box-sizing: border-box;
            transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
        }
        input[type="text"]:focus,
        select:focus,
        textarea:focus { /* Apply focus styles to textarea */
            outline: none;
            border-color: #3b82f6; /* ring-blue-500 */
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25); /* ring-blue-500/50 */
        }
        textarea {
            resize: none; /* Remove manual resizing handle */
            overflow: hidden; /* Hide scrollbar */
            min-height: calc(2 * (1rem + 12px + 12px + 2px)); /* Roughly double the height of a single-line input */
            /* 1rem (font-size) + 12px (padding-top) + 12px (padding-bottom) + 2px (border) */
        }
        .confirm-button {
            background-color: #2563eb; /* bg-blue-600 */
            color: white;
            padding: 14px 25px;
            border: none;
            border-radius: 8px; /* rounded-lg */
            font-size: 1.125rem; /* text-lg */
            font-weight: 600; /* font-semibold */
            cursor: pointer;
            width: 100%;
            transition: background-color 0.3s ease, transform 0.1s ease;
            box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
        }
        .confirm-button:hover {
            background-color: #1d4ed8; /* bg-blue-700 */
            transform: translateY(-1px);
        }
        .confirm-button:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .required-indicator::after {
            content: ' *';
            color: #ef4444; /* text-red-500 */
            margin-left: 4px;
        }
        #resultContainer {
            margin-top: 25px;
            padding: 15px;
            background-color: #e0f2fe; /* bg-blue-50 */
            border: 1px solid #90cdf4; /* border-blue-200 */
            border-radius: 8px;
            color: #2c5282; /* text-blue-800 */
            font-size: 0.95rem;
            word-wrap: break-word;
            text-align: center;
            display: none; /* Hidden by default */
        }