body {
            background-color: #f5f7fa;
        }

        .header {
            background-color: #006080;
            color: white;
            padding: 15px 20px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .logo {
            width: 40px;
            height: 40px;
            margin-right: 15px;
        }

        .form-container {
            max-width: 800px;
            margin: 40px auto;
            background-color: #fff;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
        }

        .section-header {
            /* Light stop darkened from #0087b3 so white heading text meets WCAG AA
               (4.5:1) across the whole gradient, not just the darker end. */
            background: linear-gradient(45deg, #006080, #007a9e);
            color: white;
            padding: 15px 25px;
            margin: -30px -30px 30px -30px;
            border-radius: 15px 15px 0 0;
            text-align: center;
        }

        /* The theme colours headings a dark navy, which fails contrast on the teal
           header. Force white so the heading reads clearly (WCAG AA). */
        .section-header h4 {
            color: #ffffff;
        }

        /* The theme's success alert is a light green (#17c653) on white -- about 2.3:1,
           well under AA. Use the accessible success palette: dark green text on a light
           green fill. */
        .form-container .alert-success {
            background-color: #d1e7dd;
            border-color: #a3cfbb;
            color: #0f5132;
        }

        /* Success helper text (e.g. the verification-code notice) is the same light theme
           green on white; darken it to the accessible dark green (WCAG AA). The theme's
           utility uses !important, so match it with a more specific rule. */
        .form-container .text-success {
            color: #0f5132 !important;
        }

        .event-info {
            background-color: #f8f9fa;
            padding: 20px;
            margin: 15px 0;
            border-radius: 10px;
            border-left: 4px solid #006080;
        }

        .question-section {
            margin-bottom: 25px;
            padding: 20px;
            border-radius: 10px;
            background-color: #fff;
            transition: transform 0.2s, box-shadow 0.2s;
        }

            .question-section:hover {
                transform: translateY(-2px);
                box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            }

        .required::after {
            content: " *";
            color: #dc3545;
            font-weight: bold;
        }

        .form-label {
            font-weight: 500;
            color: #2c3e50;
            margin-bottom: 12px;
        }

        .form-select {
            border: 2px solid #e9ecef;
            padding: 12px;
            border-radius: 8px;
        }

            .form-select:focus {
                border-color: #006080;
                box-shadow: 0 0 0 0.2rem rgba(0,96,128,0.25);
            }

        .form-check {
            margin: 10px 0;
            padding-left: 30px;
        }

        .form-check-input {
            width: 20px;
            height: 20px;
            margin-top: 3px;
        }

            .form-check-input:checked {
                background-color: #006080;
                border-color: #006080;
            }

        .form-check-label {
            margin-left: 8px;
            font-size: 1rem;
        }

        .btn {
            padding: 12px 25px;
            font-weight: 500;
            border-radius: 8px;
            transition: all 0.3s;
        }

        .btn-primary {
            background-color: #006080;
            border: none;
        }

            .btn-primary:hover {
                background-color: #004d66 !important;
                transform: translateY(-2px);
            }

        .btn-secondary {
            background-color: #6c757d;
            border: none;
        }

            .btn-secondary:hover {
                background-color: #5a6268;
                transform: translateY(-2px);
            }

        .helper-text {
            font-size: 0.9rem;
            color: #6c757d;
            margin-top: 5px;
            font-style: italic;
        }

        .question-section {
            animation: fadeIn 0.5s ease-out forwards;
        }

        .form-controls {
            margin-top: 1rem;
        }

        .hide {
            display: none !important;
        }

        .btn-custom {
            color: white;
            background-color: #007bff;
            border-color: #007bff;
        }

            .btn-custom:hover,
            .btn-custom:focus,
            .btn-custom:active {
                color: white;
                background-color: #0056b3;
                border-color: #004085;
            }