body {
            background-color: #f4f7fc;
        }

        .registration-form-box {
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            border-radius: 12px;
            background-color: white;
            margin: 0 auto;
            border-top: 5px solid var(--accent-color, #0d6efd);
        }

        #registration.section {
            padding-top: 30px;
            padding-bottom: 60px;
        }

        .registration-form-box {
            padding: 40px 50px;
        }

        .main-page-title {
            font-size: 1rem;
            font-weight: 800;
            color: var(--accent-color, #0d6efd);
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        @media (max-width: 768px) {
            #registration.section {
                padding-top: 10px !important;
                padding-bottom: 30px;
            }

            .container {
                padding-left: 10px;
                padding-right: 10px;
            }

            .registration-form-box {
                padding: 25px 20px !important;
                box-shadow: none;
            }

            .main-page-title {
                font-size: 1.3rem;
            }

            .otp-container {
                flex-direction: column;
            }

            .otp-input-group {
                width: 100% !important;
                border-radius: 8px !important;
            }

            .otp-input-group input {
                border-radius: 0 8px 8px 0 !important;
            }

            .btn-send-otp {
                width: 100%;
                margin-top: 10px;
                border-radius: 8px !important;
                margin-left: 0 !important;
            }
        }

        .section-header {
            background-color: #f1f4f9;
            color: #333;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 25px;
            margin-top: 15px;
            padding: 12px 15px;
            border-radius: 6px;
            border-left: 5px solid var(--accent-color, #0d6efd);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .form-label {
            font-weight: 600;
            color: #555;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }

        .form-label i {
            color: var(--accent-color, #0d6efd);
        }

        .form-control,
        .form-select {
            border: 1px solid #dee2e6;
            border-radius: 8px;
            padding: 10px 15px;
            font-size: 0.95rem;
            background-color: #fff;
        }

        .form-control:focus {
            border-color: var(--accent-color, #0d6efd);
            box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.1);
        }

        .input-group-text {
            background-color: #f8f9fa;
            border: 1px solid #dee2e6;
            color: #555;
        }

        .error {
            font-size: 0.8rem;
            color: #dc3545;
            margin-top: 4px;
        }