/* ===== RESET & BASE STYLES ===== */
        .quiz-app * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        .quiz-app {
            background-color: #f8f9fa;
            min-height: 100vh;
        }

        /* ===== HEADER SECTION ===== */
        .quiz-app .header {
            width: 100%;
            height: 80px;
            background-color: #014e4e;
            display: flex;
            align-items: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            justify-content: space-between;
            padding: 0 30px;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .quiz-app .header__title {
            color: white;
            font-size: 28px;
            font-weight: 600;
        }

        .quiz-app .header__college {
            text-align: center;
            font-size: 30px;
            color: white;
            font-weight: 600;
            padding: 0 20px;
            /*display: none;*/
        }

        .quiz-app .header__timer {
            display: flex;
            align-items: center;
            font-size: 24px;
            color: white;
            gap: 5px;
        }

        .quiz-app .header__timer--box {
            padding: 12px 10px;
            min-width: 40px;
            text-align: center;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
        }

        .quiz-app .header__timer--colon {
            padding: 10px 0;
        }

        /* ===== MAIN CONTAINER ===== */
        .quiz-app .main-container {
            width: 100%;
            min-height: calc(100vh - 80px);
            display: flex;
        }

        /* ===== LEFT PANEL (QUESTIONS) ===== */
        .quiz-app .question-panel {
            width: 75%;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 30px;
            height: auto;
            background-color: #fff;
        }

        .quiz-app .question-container {
            width: 100%;
            max-width: 800px;
            height: auto;
        }

        .quiz-app .question-box {
            background: white;
            padding: 40px;
            width: 100%;
            max-height: 560px;
            overflow-y: auto;
            scrollbar-width: thin;
            scrollbar-color: teal white;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        }

        /* Custom scrollbar for question box */
        .quiz-app .question-box::-webkit-scrollbar {
            width: 8px;
        }

        .quiz-app .question-box::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 10px;
        }

        .quiz-app .question-box::-webkit-scrollbar-thumb {
            background: #014e4e;
            border-radius: 10px;
        }

        .quiz-app .question-box::-webkit-scrollbar-thumb:hover {
            background: #013535;
        }

        .quiz-app .question-box__text {
            font-size: 26px;
            margin-bottom: 35px;
            color: #014e4e;
            line-height: 1.5;
            font-weight: 500;
        }

        .quiz-app .question-box__options {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 30px;
        }

        .quiz-app .option-button {
            padding: 18px 25px;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            background: white;
            cursor: pointer;
            font-size: 18px;
            text-align: left;
            transition: all 0.3s ease;
            color: #333;
            font-weight: 400;
        }

        .quiz-app .option-button:hover {
            background: #f5f5f5;
            border-color: #014e4e;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(1, 78, 78, 0.1);
        }

        .quiz-app .option-button.selected {
            background: #e3f2fd;
            border-color: #2196f3;
        }

        .quiz-app .next-button {
            padding: 15px 50px;
            background: linear-gradient(135deg, #014e4e, #026666);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 18px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 600;
            letter-spacing: 0.5px;
            display: block;
            margin-left: auto;
        }

        .quiz-app .next-button:hover {
            background: linear-gradient(135deg, #013535, #014e4e);
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(1, 78, 78, 0.3);
        }

        /* ===== RIGHT PANEL (QUESTIONS NAVIGATION) ===== */
        .quiz-app .navigation-panel {
            width: 25%;
            background: linear-gradient(135deg, #014e4e, #026666);
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .quiz-app .question-numbers {
            flex: 1;
            padding: 25px 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            align-content: flex-start;
            overflow-y: auto;
        }

        /* Custom scrollbar for question numbers */
        .quiz-app .question-numbers::-webkit-scrollbar {
            width: 6px;
        }

        .quiz-app .question-numbers::-webkit-scrollbar-track {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
        }

        .quiz-app .question-numbers::-webkit-scrollbar-thumb {
            background: white;
            border-radius: 10px;
        }

        .quiz-app .number-button {
            width: 45px;
            height: 45px;
            background: white;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: #014e4e;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .quiz-app .number-button:hover {
            background: #f0f0f0;
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }

        .quiz-app .number-button.current {
            background: #014e4e;
            color: white;
            border-color: white;
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
        }

        /* ===== RIGHT SIDE BUTTON COLORS ===== */
        .quiz-app .number-button.answered {
            background: #3498db; /* Blue for answered */
            color: white;
        }

        .quiz-app .number-button.correct-answered {
            background: linear-gradient(135deg, #2ecc71, #27ae60); /* Green for correct */
            color: white !important;
            border-color: #27ae60;
        }

        .quiz-app .number-button.wrong-answered {
            background: linear-gradient(135deg, #e74c3c, #c0392b); /* Red for wrong */
            color: white !important;
            border-color: #c0392b;
        }

        .quiz-app .number-button.not-visited {
            background: white;
            color: #014e4e;
        }

        .quiz-app .action-buttons {
            padding: 25px;
            display: flex;
            flex-direction: column;
            gap: 18px;
            background: rgba(0, 0, 0, 0.1);
        }

        .quiz-app .action-button {
            padding: 16px;
            background: white;
            border: none;
            border-radius: 10px;
            font-size: 17px;
            font-weight: 700;
            color: #014e4e;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }

        .quiz-app .action-button:hover {
            background: #f8f9fa;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }

        /* ===== RESULTS SECTION ===== */
        .quiz-app .results-container {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            text-align: center;
        }

        .quiz-app .results-title {
            font-size: 32px;
            color: #014e4e;
            margin-bottom: 25px;
            font-weight: 600;
        }

        .quiz-app .score-display {
            font-size: 28px;
            margin: 25px 0;
            color: #333;
        }

        .quiz-app .percentage {
            font-size: 22px;
            color: #666;
            margin-bottom: 35px;
        }

        .quiz-app .review-section {
            text-align: left;
            margin-top: 35px;
            padding-top: 25px;
            border-top: 2px solid #eee;
        }

        .quiz-app .review-title {
            font-size: 24px;
            color: #014e4e;
            margin-bottom: 20px;
        }

        .quiz-app .review-item {
            padding: 20px;
            margin-bottom: 15px;
            border-radius: 10px;
            border-left: 5px solid;
        }

        .quiz-app .review-item.correct {
            background: #f0fff4;
            border-left-color: #28a745;
        }

        .quiz-app .review-item.wrong {
            background: #fff5f5;
            border-left-color: #dc3545;
        }

        /* ===== RESPONSIVE DESIGN ===== */
        
        /* Tablet (768px - 1024px) */
        @media screen and (max-width: 1024px) {
            .quiz-app .main-container {
                flex-direction: column;
                min-height: auto;
            }
            
            .quiz-app .question-panel,
            .quiz-app .navigation-panel {
                width: 100%;
            }
            
            .quiz-app .navigation-panel {
                order: -1;
                height: auto;
                max-height: 300px;
            }
            
            .quiz-app .question-numbers {
                max-height: 200px;
            }
            
            .quiz-app .header__college {
                display: block;
                font-size: 18px;
            }
            
            .quiz-app .header__title {
                font-size: 24px;
            }
            
            .quiz-app .question-box__text {
                font-size: 24px;
            }
            
            .quiz-app .number-button {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
        }
        
        /* Mobile (480px - 768px) */
        @media screen and (max-width: 768px) {
            .quiz-app .header {
                flex-direction: column;
                height: auto;
                padding: 15px;
                gap: 15px;
            }
            
            .quiz-app .header__title {
                font-size: 22px;
            }
            
            .quiz-app .header__college {
                font-size: 16px;
                padding: 0;
            }
            
            .quiz-app .header__timer {
                font-size: 20px;
            }
            
            .quiz-app .question-panel {
                padding: 20px;
            }
            
            .quiz-app .question-box {
                padding: 25px;
            }
            
            .quiz-app .question-box__text {
                font-size: 22px;
                margin-bottom: 25px;
            }
            
            .quiz-app .option-button {
                padding: 15px 20px;
                font-size: 16px;
            }
            
            .quiz-app .next-button {
                width: 100%;
                margin-left: 0;
                margin-top: 20px;
            }
            
            .quiz-app .number-button {
                width: 35px;
                height: 35px;
                font-size: 14px;
            }
            
            .quiz-app .action-button {
                padding: 14px;
                font-size: 16px;
            }
        }
        
        /* Small Mobile (< 480px) */
        @media screen and (max-width: 480px) {
            .quiz-app .question-box {
                padding: 20px;
            }
            
            .quiz-app .question-box__text {
                font-size: 20px;
            }
            
            .quiz-app .option-button {
                padding: 12px 15px;
                font-size: 15px;
            }
            
            .quiz-app .number-button {
                width: 30px;
                height: 30px;
                font-size: 12px;
            }
            
            .quiz-app .question-numbers {
                gap: 6px;
                padding: 15px;
            }
            
            .quiz-app .results-title {
                font-size: 26px;
            }
            
            .quiz-app .score-display {
                font-size: 24px;
            }
        }
        
        /* Large Desktop (> 1440px) */
        @media screen and (min-width: 1440px) {
            .quiz-app .question-container {
                max-width: 1000px;
            }
            
            .quiz-app .question-box__text {
                font-size: 28px;
            }
            
            .quiz-app .option-button {
                padding: 22px 30px;
                font-size: 20px;
            }
            
            .quiz-app .number-button {
                width: 50px;
                height: 50px;
                font-size: 20px;
            }
        }
        
        /* Print Mode */
        @media print {
            .quiz-app .navigation-panel,
            .quiz-app .next-button,
            .quiz-app .action-buttons {
                display: none;
            }
            
            .quiz-app .question-panel {
                width: 100%;
            }
        }