* { box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', Tahoma, sans-serif;
            background-color: #f0f2f5;
            margin: 0;
            padding: 10px;
            display: flex;
            justify-content: center;
        }

        .form-card {
            background: #fff;
            width: 100%;
            max-width: 900px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            overflow: hidden;
            margin-bottom: 20px;
        }

        .banner-img {
            width: 100%;
            display: block;
        }

        .padding-area {
            padding: 30px;
        }

        .section-title {
            color: #1a3a5a;
            font-size: 24px;
            margin: 0 0 10px 0;
        }

        .sub-text {
            color: #666;
            font-size: 14px;
            margin-bottom: 25px;
        }

        /* 2-Column Grid Layout */
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr; /* Rendu column */
            gap: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            margin-bottom: 5px;
        }

        /* Full width items */
        .full-width {
            grid-column: span 2;
        }

        /* Section Headings */
        .group-heading {
            grid-column: span 2;
            background: #f8f9fa;
            padding: 10px;
            margin-top: 15px;
            border-left: 5px solid #25D366;
            font-weight: bold;
            color: #333;
        }

        label {
            font-weight: 600;
            margin-bottom: 8px;
            font-size: 14px;
            color: #444;
        }

        label span { color: red; }

        input, select, textarea {
            padding: 12px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            background: #fcfcfc;
        }

        input:focus, select:focus, textarea:focus {
            border-color: #25D366;
            background: #fff;
        }

        .hint {
            font-size: 12px;
            color: #888;
            margin-top: 4px;
        }

        /* Option items (Radio/Checkbox) */
        .options-list {
            display: grid;
            grid-template-columns: 1fr 1fr; /* Options-um 2 col-ah irukum */
            gap: 10px;
            margin-top: 5px;
        }

        .option-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            cursor: pointer;
        }

        .submit-btn {
            background-color: #25D366;
            color: white;
            border: none;
            width: 100%;
            padding: 18px;
            font-size: 18px;
            font-weight: bold;
            border-radius: 50px;
            cursor: pointer;
            margin-top: 30px;
            transition: 0.3s;
        }

        .submit-btn:hover { background-color: #1ebd5b; }

        /* Mobile Responsive - Single Column */
        @media (max-width: 700px) {
            .form-grid, .options-list {
                grid-template-columns: 1fr;
            }
            .full-width, .group-heading {
                grid-column: span 1;
            }
        }