:root {
            --google-blue: #4285F4;
            --google-blue-hover: #3367D6;
            --google-blue-light: #E8F0FE;
            --google-green: #34A853;
            --google-yellow: #FBBC05;
            --google-red: #EA4335;
            --google-purple: #A142F4;
            --text-main: #202124;
            --text-muted: #5f6368;
            --bg-light: #F8F9FA;
            --card-bg: #FFFFFF;
            --border-color: #DADCE0;
            --shadow-sm: 0 2px 6px rgba(60, 64, 67, 0.08);
            --shadow-md: 0 4px 16px rgba(60, 64, 67, 0.12);
            --shadow-lg: 0 10px 30px rgba(66, 133, 244, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            background-color: var(--bg-light);
            color: var(--text-main);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background-image: 
                radial-gradient(circle at 10% 10%, rgba(66, 133, 244, 0.04) 0%, transparent 40%),
                radial-gradient(circle at 90% 90%, rgba(52, 168, 83, 0.04) 0%, transparent 40%);
            line-height: 1.6;
        }

        /* Top Bar Header */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(187, 19, 19, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(218, 220, 224, 0.6);
            padding: 1rem 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            font-size: 1.15rem;
            color: var(--text-main);
        }

        .google-dots {
            display: flex;
            gap: 4px;
        }

        .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
        }

        .dot-blue { background-color: var(--google-blue); }
        .dot-red { background-color: var(--google-red); }
        .dot-yellow { background-color: var(--google-yellow); }
        .dot-green { background-color: var(--google-green); }

        .time-badge {
            background-color: var(--google-blue-light);
            color: var(--google-blue);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Progress Bar */
        .progress-container {
            width: 100%;
            height: 4px;
            background-color: #E0E0E0;
            position: sticky;
            top: 0;
            z-index: 99;
        }

        .progress-bar {
            height: 100%;
            width: 0%;
            background: linear-gradient(90deg, var(--google-blue), #669DF6);
            transition: width 0.4s ease;
        }

        /* Main Container */
        .container {
            max-width: 800px;
            margin: 2rem auto;
            padding: 0 1.25rem;
            width: 100%;
            flex: 1;
        }

        /* Glassmorphism Card Style */
        .glass-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.8);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            box-shadow: var(--shadow-md);
            margin-bottom: 2rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .glass-card:hover {
            box-shadow: var(--shadow-lg);
        }

        .glass-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--google-blue), var(--google-purple), var(--google-yellow), var(--google-green));
            opacity: 0;
            transition: var(--transition);
        }

        .glass-card.active-card::before {
            opacity: 1;
        }

        /* Hero Section */
        .hero {
            text-align: center;
            padding: 3rem 2rem;
            animation: fadeIn 0.6s ease-out;
        }

        .hero-icon {
            width: 70px;
            height: 70px;
            background: var(--google-blue-light);
            color: var(--google-blue);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            margin: 0 auto 1.5rem;
            box-shadow: 0 6px 16px rgba(66, 133, 244, 0.2);
        }

        .hero h1 {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 620px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }

        /* Buttons */
        .btn {
            background-color: var(--google-blue);
            color: #ffffff;
            border: none;
            padding: 14px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            box-shadow: 0 4px 12px rgba(66, 133, 244, 0.3);
            text-decoration: none;
        }

        .btn:hover {
            background-color: var(--google-blue-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(66, 133, 244, 0.4);
        }

        .btn:active {
            transform: translateY(0);
        }

        .btn:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            transform: none;
        }

        .btn-outline {
            background-color: transparent;
            color: var(--google-blue);
            border: 1.5px solid var(--border-color);
            box-shadow: none;
        }

        .btn-outline:hover {
            background-color: var(--google-blue-light);
            border-color: var(--google-blue);
            box-shadow: none;
        }

        .btn-group {
            display: flex;
            gap: 12px;
            justify-content: space-between;
            margin-top: 2rem;
        }

        /* Step Card Header */
        .step-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 1.75rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--border-color);
        }

        .step-number {
            background: var(--google-blue-light);
            color: var(--google-blue);
            font-weight: 700;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.95rem;
        }

        .step-title-text h2 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .step-title-text p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* Form Controls & Floating Labels */
        .form-group {
            margin-bottom: 1.75rem;
            position: relative;
        }

        .floating-label-group {
            position: relative;
            margin-bottom: 1.75rem;
        }

        .floating-input {
            width: 100%;
            padding: 16px 16px;
            font-size: 1rem;
            border: 1.5px solid var(--border-color);
            border-radius: var(--radius-sm);
            outline: none;
            background: #ffffff;
            transition: var(--transition);
            color: var(--text-main);
        }

        .floating-input:focus {
            border-color: var(--google-blue);
            box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.15);
        }

        .floating-label {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            background-color: #ffffff;
            padding: 0 6px;
            color: var(--text-muted);
            font-size: 0.95rem;
            pointer-events: none;
            transition: var(--transition);
        }

        .floating-input:focus ~ .floating-label,
        .floating-input:not(:placeholder-shown) ~ .floating-label {
            top: 0;
            font-size: 0.8rem;
            color: var(--google-blue);
            font-weight: 500;
        }

        .question-label {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 1rem;
            display: block;
        }

        .question-sublabel {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: -0.5rem;
            margin-bottom: 1rem;
            display: block;
        }

        /* Option Grid / Custom Radio & Checkbox Styling */
        .options-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }

        .option-card {
            position: relative;
            border: 1.5px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 14px;
            background-color: #ffffff;
        }

        .option-card:hover {
            border-color: #B0C4DE;
            background-color: #F8FAFF;
            transform: translateY(-1px);
        }

        .option-card input[type="radio"],
        .option-card input[type="checkbox"] {
            appearance: none;
            -webkit-appearance: none;
            width: 20px;
            height: 20px;
            border: 2px solid #9AA0A6;
            border-radius: 50%;
            outline: none;
            cursor: pointer;
            display: grid;
            place-content: center;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .option-card input[type="checkbox"] {
            border-radius: 4px;
        }

        .quiz-scenario-title {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--google-blue);
            text-transform: uppercase;
            letter-spacing: 0.4px;
            margin-bottom: 6px;
        }

        .quiz-icon {
            font-size: 1.05rem;
            color: var(--text-muted);
            width: 22px;
            text-align: center;
            flex-shrink: 0;
        }

        .option-card input:checked ~ .quiz-icon {
            color: var(--google-blue);
        }

        .option-card input[type="radio"]::before {
            content: "";
            width: 10px;
            height: 10px;
            border-radius: 50%;
            transform: scale(0);
            transition: 0.2s transform ease-in-out;
            background-color: #ffffff;
        }

        .option-card input[type="checkbox"]::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 11px;
            color: #ffffff;
            transform: scale(0);
            transition: 0.2s transform ease-in-out;
        }

        .option-card input:checked {
            background-color: var(--google-blue);
            border-color: var(--google-blue);
        }

        .option-card input:checked::before {
            transform: scale(1);
        }

        .option-card.selected {
            border-color: var(--google-blue);
            background-color: var(--google-blue-light);
            box-shadow: 0 2px 8px rgba(66, 133, 244, 0.12);
        }

        .option-card.selected .option-text {
            color: var(--google-blue-hover);
            font-weight: 500;
        }

        /* Quiz Answers - Picture-Card Gallery (A/B/C/D each a vivid illustrated tile) */
        .quiz-options {
            grid-template-columns: 1fr;
        }

        @media (min-width: 560px) {
            .quiz-options {
                grid-template-columns: 1fr 1fr;
            }
        }

        .quiz-options .option-card {
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
            text-align: center;
            padding: 30px 16px 22px;
            gap: 14px;
            overflow: visible;
            border-width: 2px;
            border-radius: 18px;
            min-height: 168px;
        }

        .quiz-options .option-card::before {
            content: "";
            position: absolute;
            top: -18px;
            left: -18px;
            width: 70px;
            height: 70px;
            border-radius: 50%;
            filter: blur(2px);
            opacity: 0.16;
            transition: var(--transition);
            pointer-events: none;
        }

        .quiz-options .option-card::after {
            content: "";
            position: absolute;
            bottom: -22px;
            right: -14px;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            filter: blur(2px);
            opacity: 0.12;
            transition: var(--transition);
            pointer-events: none;
        }

        .quiz-options .option-card:nth-child(1)::before, .quiz-options .option-card:nth-child(1)::after { background: var(--google-blue); }
        .quiz-options .option-card:nth-child(2)::before, .quiz-options .option-card:nth-child(2)::after { background: var(--google-red); }
        .quiz-options .option-card:nth-child(3)::before, .quiz-options .option-card:nth-child(3)::after { background: #FBBC05; }
        .quiz-options .option-card:nth-child(4)::before, .quiz-options .option-card:nth-child(4)::after { background: var(--google-green); }

        .quiz-options .option-card input[type="radio"] {
            position: absolute;
            top: 12px;
            right: 12px;
            width: 17px;
            height: 17px;
            margin: 0;
            z-index: 3;
        }

        .quiz-icon-wrap {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            z-index: 1;
        }

        .quiz-icon-wrap::before {
            content: "";
            position: absolute;
            inset: -9px;
            border-radius: 50%;
            filter: blur(9px);
            opacity: 0.55;
            z-index: -1;
            transition: var(--transition);
        }

        .quiz-options .quiz-icon {
            width: 64px;
            height: 64px;
            min-width: 64px;
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.65rem;
            color: #ffffff;
            transition: var(--transition);
            box-shadow: 0 5px 14px rgba(0, 0, 0, 0.16);
            position: relative;
            overflow: hidden;
        }

        /* subtle glossy sheen so the tile reads as a little icon-image rather than a flat swatch */
        .quiz-options .quiz-icon::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(155deg, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0) 55%);
        }

        .quiz-options .quiz-icon i,
        .quiz-options .quiz-icon {
            position: relative;
        }

        .quiz-options .option-card:nth-child(1) .quiz-icon { background: linear-gradient(135deg, #7BAEFF 0%, #4285F4 55%, #2A5FCC 100%); }
        .quiz-options .option-card:nth-child(2) .quiz-icon { background: linear-gradient(135deg, #FF8A7A 0%, #EA4335 55%, #C5221F 100%); }
        .quiz-options .option-card:nth-child(3) .quiz-icon { background: linear-gradient(135deg, #FFDA6A 0%, #FBBC05 55%, #E0A400 100%); }
        .quiz-options .option-card:nth-child(4) .quiz-icon { background: linear-gradient(135deg, #6FDB94 0%, #34A853 55%, #1E8E3E 100%); }

        .quiz-options .option-card:nth-child(1) .quiz-icon-wrap::before { background: var(--google-blue); }
        .quiz-options .option-card:nth-child(2) .quiz-icon-wrap::before { background: var(--google-red); }
        .quiz-options .option-card:nth-child(3) .quiz-icon-wrap::before { background: #FBBC05; }
        .quiz-options .option-card:nth-child(4) .quiz-icon-wrap::before { background: var(--google-green); }

        .quiz-check-badge {
            position: absolute;
            top: -6px;
            right: -6px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: #ffffff;
            border: 2px solid #ffffff;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
            transform: scale(0);
            opacity: 0;
            transition: var(--transition);
            z-index: 2;
        }

        .quiz-options .option-card:nth-child(1) .quiz-check-badge { background: var(--google-blue); }
        .quiz-options .option-card:nth-child(2) .quiz-check-badge { background: var(--google-red); }
        .quiz-options .option-card:nth-child(3) .quiz-check-badge { background: #E0A400; }
        .quiz-options .option-card:nth-child(4) .quiz-check-badge { background: var(--google-green); }

        .quiz-options .option-text {
            font-size: 0.92rem;
            line-height: 1.35;
        }

        .quiz-options .option-card:hover {
            transform: translateY(-4px);
        }

        .quiz-options .option-card:hover .quiz-icon {
            transform: scale(1.08) rotate(-4deg);
        }

        .quiz-options .option-card:hover::before {
            opacity: 0.28;
            transform: scale(1.15);
        }

        .quiz-options .option-card:nth-child(1):hover { border-color: var(--google-blue); background-color: rgba(66, 133, 244, 0.05); }
        .quiz-options .option-card:nth-child(2):hover { border-color: var(--google-red); background-color: rgba(234, 67, 53, 0.05); }
        .quiz-options .option-card:nth-child(3):hover { border-color: #FBBC05; background-color: rgba(251, 188, 5, 0.07); }
        .quiz-options .option-card:nth-child(4):hover { border-color: var(--google-green); background-color: rgba(52, 168, 83, 0.05); }

        .quiz-options .option-card:nth-child(1) input:checked { background-color: var(--google-blue); border-color: var(--google-blue); }
        .quiz-options .option-card:nth-child(2) input:checked { background-color: var(--google-red); border-color: var(--google-red); }
        .quiz-options .option-card:nth-child(3) input:checked { background-color: #FBBC05; border-color: #FBBC05; }
        .quiz-options .option-card:nth-child(4) input:checked { background-color: var(--google-green); border-color: var(--google-green); }

        .quiz-options .option-card.selected {
            animation: quizPop 0.3s ease;
        }

        .quiz-options .option-card:nth-child(1).selected { border-color: var(--google-blue); background-color: rgba(66, 133, 244, 0.08); box-shadow: 0 6px 18px rgba(66, 133, 244, 0.22); }
        .quiz-options .option-card:nth-child(2).selected { border-color: var(--google-red); background-color: rgba(234, 67, 53, 0.08); box-shadow: 0 6px 18px rgba(234, 67, 53, 0.22); }
        .quiz-options .option-card:nth-child(3).selected { border-color: #FBBC05; background-color: rgba(251, 188, 5, 0.1); box-shadow: 0 6px 18px rgba(251, 188, 5, 0.28); }
        .quiz-options .option-card:nth-child(4).selected { border-color: var(--google-green); background-color: rgba(52, 168, 83, 0.08); box-shadow: 0 6px 18px rgba(52, 168, 83, 0.22); }

        .quiz-options .option-card:nth-child(1).selected .option-text { color: var(--google-blue-hover); font-weight: 600; }
        .quiz-options .option-card:nth-child(2).selected .option-text { color: #C5221F; font-weight: 600; }
        .quiz-options .option-card:nth-child(3).selected .option-text { color: #946200; font-weight: 600; }
        .quiz-options .option-card:nth-child(4).selected .option-text { color: #1E8E3E; font-weight: 600; }

        .quiz-options .option-card:nth-child(1).selected .quiz-icon { box-shadow: 0 6px 16px rgba(66, 133, 244, 0.6); }
        .quiz-options .option-card:nth-child(2).selected .quiz-icon { box-shadow: 0 6px 16px rgba(234, 67, 53, 0.6); }
        .quiz-options .option-card:nth-child(3).selected .quiz-icon { box-shadow: 0 6px 16px rgba(251, 188, 5, 0.65); }
        .quiz-options .option-card:nth-child(4).selected .quiz-icon { box-shadow: 0 6px 16px rgba(52, 168, 83, 0.6); }

        .quiz-options .option-card.selected .quiz-icon {
            transform: scale(1.12);
        }

        .quiz-options .option-card.selected .quiz-check-badge {
            transform: scale(1);
            opacity: 1;
        }

        .quiz-options .option-card.selected .quiz-icon-wrap::before {
            opacity: 0.85;
        }

        @keyframes quizPop {
            0% { transform: scale(1); }
            45% { transform: scale(1.04); }
            100% { transform: scale(1); }
        }

        .option-text {
            font-size: 0.95rem;
            color: var(--text-main);
            flex: 1;
        }

        /* Textarea styling */
        textarea.floating-input {
            min-height: 120px;
            resize: vertical;
        }

        /* Error States */
        .error-message {
            color: var(--google-red);
            font-size: 0.8rem;
            margin-top: 6px;
            display: none;
            align-items: center;
            gap: 4px;
        }

        .error-message.visible {
            display: flex;
        }

        .input-error {
            border-color: var(--google-red) !important;
        }

        /* Animation Keyframes */
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(12px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .step-panel {
            display: none;
        }

        .step-panel.active {
            display: block;
            animation: fadeIn 0.4s ease-out forwards;
        }

        /* Step Indicators Bar */
        .steps-bar {
            display: flex;
            justify-content: space-between;
            margin-bottom: 2rem;
            position: relative;
        }

        .steps-bar::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--border-color);
            z-index: 1;
            transform: translateY(-50%);
        }

        .step-dot {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: #ffffff;
            border: 2px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            z-index: 2;
            transition: var(--transition);
        }

        .step-dot.active {
            border-color: var(--google-blue);
            background-color: var(--google-blue);
            color: #ffffff;
            box-shadow: 0 0 0 4px var(--google-blue-light);
        }

        .step-dot.completed {
            border-color: var(--google-green);
            background-color: var(--google-green);
            color: #ffffff;
        }

        /* Result & Assessment Score Display */
        .result-container {
            text-align: center;
            padding: 2.5rem 1rem;
            display: none;
        }

        .result-container.active {
            display: block;
            animation: fadeIn 0.5s ease-out forwards;
        }

        .success-checkmark {
            width: 80px;
            height: 80px;
            background: #E6F4EA;
            color: var(--google-green);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            margin: 0 auto 1.5rem;
            animation: scaleUp 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        @keyframes scaleUp {
            from { transform: scale(0); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }

        .result-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }

        .score-card {
            background: linear-gradient(135deg, #f8faff 0%, #e8f0fe 100%);
            border: 1.5px solid #C2E7FF;
            border-radius: var(--radius-lg);
            padding: 2rem;
            margin: 2rem 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

        .level-badge {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 1.1rem;
            font-weight: 700;
            margin-top: 0.5rem;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .badge-beginner {
            background-color: #FEF7E0;
            color: #B06000;
            border: 1px solid #FDE293;
        }

        .badge-intermediate {
            background-color: #E8F0FE;
            color: #1A73E8;
            border: 1px solid #AECBFA;
        }

        .badge-advanced {
            background-color: #E6F4EA;
            color: #137333;
            border: 1px solid #A8DAB5;
        }

        .score-circle {
            font-size: 3rem;
            font-weight: 700;
            color: var(--google-blue);
            margin: 0.5rem 0;
        }

        .info-box {
            background-color: #F1F3F4;
            border-radius: var(--radius-md);
            padding: 1.25rem;
            margin-top: 1.5rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            text-align: left;
        }

        .info-box p {
            margin-bottom: 0.5rem;
        }

        .info-box p:last-child {
            margin-bottom: 0;
        }

        .quiz-review {
            margin-top: 2rem;
            text-align: left;
        }
        .quiz-review-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-main);
        }
        .quiz-review-title i { color: var(--google-blue); }
        .review-item {
            display: flex;
            gap: 14px;
            padding: 1rem 1.1rem;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            background: #fff;
        }
        .review-item.correct { border-left: 4px solid var(--google-green); }
        .review-item.incorrect { border-left: 4px solid var(--google-red); }
        .review-icon {
            width: 34px; height: 34px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            flex-shrink: 0; font-size: 0.95rem; margin-top: 2px;
        }
        .review-item.correct .review-icon { background: #E6F4EA; color: var(--google-green); }
        .review-item.incorrect .review-icon { background: #FCE8E6; color: var(--google-red); }
        .review-question { font-weight: 600; font-size: 0.92rem; margin-bottom: 4px; }
        .review-answer { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 4px; }
        .review-answer strong { color: var(--text-main); }
        .review-explanation { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

        /* Footer */
        footer {
            text-align: center;
            padding: 2rem 1rem;
            font-size: 0.85rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            margin-top: auto;
            background: #ffffff;
        }

        /* Responsive Breakpoints */
        @media (max-width: 600px) {
            .glass-card {
                padding: 1.5rem;
                border-radius: var(--radius-md);
            }
            .hero h1 {
                font-size: 1.75rem;
            }
            .btn {
                width: 100%;
            }
            .btn-group {
                flex-direction: column-reverse;
            }
            .time-badge {
                display: none;
            }
        }