.quiz-card {
            max-width: 650px;
            width: 100%;
            margin: 0 auto;
            background: white;
            border-radius: 44px;
            box-shadow: 0 25px 45px -12px rgba(0, 0, 0, 0.3);
            overflow: hidden;
        }

        .quiz-header {
            background: #0f2e2c;
            padding: 20px 24px;
            color: white;
        }

        .quiz-header h2 {
            font-weight: 600;
            font-size: 1.5rem;
            letter-spacing: -0.3px;
        }

        .quiz-header p {
            font-size: 0.85rem;
            opacity: 0.8;
            margin-top: 6px;
        }

        .progress-area {
            background: white;
            padding: 16px 24px 8px 24px;
            border-bottom: 1px solid #e9edf2;
        }

        .progress-text {
            font-size: 0.75rem;
            font-weight: 500;
            color: #2c6e5c;
            margin-bottom: 8px;
        }

        .progress-bar-bg {
            background: #e2e8f0;
            border-radius: 20px;
            height: 6px;
            width: 100%;
        }

        .progress-fill {
            background: #1f8a6b;
            width: 0%;
            height: 6px;
            border-radius: 20px;
            transition: width 0.25s ease;
        }

        .step-container {
            padding: 28px 24px 36px;
            min-height: 440px;
        }

        .question-text {
            font-size: 1.65rem;
            font-weight: 600;
            color: #1a2e3a;
            margin-bottom: 28px;
            line-height: 1.3;
        }

        .options-group {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 32px;
        }

        .option-btn {
            background: #f8fafd;
            border: 1.5px solid #dee4ec;
            border-radius: 60px;
            padding: 14px 20px;
            font-size: 1rem;
            font-weight: 500;
            text-align: left;
            color: #1f2f3e;
            cursor: pointer;
            transition: all 0.2s;
            font-family: inherit;
            width: 100%;
        }

        .option-btn:hover {
            background: #eef3fc;
            border-color: #1f8a6b;
        }

        .option-btn.selected {
            background: #e1f3ed;
            border-color: #1f8a6b;
        }

        .input-group {
            margin-bottom: 24px;
        }

        .input-group label {
            font-weight: 600;
            color: #1f5e4d;
            display: block;
            margin-bottom: 8px;
            font-size: 0.9rem;
        }

        .input-field {
            width: 100%;
            padding: 14px 18px;
            border: 1.5px solid #dee4ec;
            border-radius: 40px;
            font-size: 1rem;
            font-family: inherit;
            background: white;
            transition: 0.2s;
        }

        .input-field:focus {
            outline: none;
            border-color: #1f8a6b;
            box-shadow: 0 0 0 3px rgba(31,138,107,0.2);
        }

        .nav-buttons {
            display: flex;
            justify-content: space-between;
            margin-top: 20px;
        }

         

        /*.btn-outline {
            background: transparent;
            border: 1px solid #cbd5e1;
            color: #1e2f44;
        }*/

        .btn-outline:hover:not(:disabled) {
            background: #f1f5f9;
        }

        .error-msg {
            color: #c2410c;
            font-size: 0.8rem;
            margin-top: 8px;
            margin-bottom: 16px;
        }

        .success-message {
            text-align: center;
            padding: 40px 20px;
        }

        .success-message h3 {
            color: #1f8a6b;
            margin-bottom: 16px;
            font-size: 1.8rem;
        }

        .success-message p {
            margin-bottom: 12px;
            color: #4a5568;
            line-height: 1.5;
        }

        .loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1000;
        }

        .spinner {
            background: white;
            padding: 24px 32px;
            border-radius: 60px;
            font-weight: 500;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
        }

        footer.quiz {
            background: #f7fafc;
            padding: 14px 24px;
            font-size: 0.7rem;
            text-align: center;
            color: #7c8b9f;
            border-top: 1px solid #edf2f7;
        }

        @media (max-width: 550px) {
            .step-container {
                padding: 20px 18px;
            }
            .question-text {
                font-size: 1.4rem;
            }
            .option-btn {
                padding: 12px 16px;
            }
        }