body {
            font-family: 'Segoe UI', Arial, sans-serif;
            background: linear-gradient(135deg, #e0eafc, #cfdef3);
            min-height: 100vh;
            padding: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        h2, h3 {
            text-align: center;
            color: #1a3c34;
            margin-bottom: 10px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .passage-info {
            text-align: center;
            color: #555;
            margin-bottom: 30px;
            font-size: 1.1rem;
            font-weight: 500;
        }
        .card {
            border: none;
            border-radius: 15px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s, box-shadow 0.3s;
            background: white;
            overflow: hidden;
            margin-bottom: 20px;
        }
        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }
        .card-header {
            background: linear-gradient(90deg, #2c3e50, #3498db);
            color: white;
            padding: 15px;
            font-weight: 600;
            border-radius: 15px 15px 0 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card-body {
            padding: 20px;
            font-size: 1.5rem;
            font-weight: bold;
            color: #1a3c34;
            text-align: center;
        }
        .card-footer {
            background: #f8f9fa;
            padding: 10px;
            font-size: 0.9rem;
            color: #555;
            text-align: center;
            border-radius: 0 0 15px 15px;
        }
        .qualification-card {
            background: <?php echo $isQualified ? '#e6ffed' : '#ffe6e6'; ?>;
            border: 3px solid <?php echo $isQualified ? '#28a745' : '#dc3545'; ?>;
            transform: scale(1.05);
        }
        .qualification-card .card-header {
            background: <?php echo $isQualified ? '#28a745' : '#dc3545'; ?>;
            font-size: 1.2rem;
        }
        .qualification-card .card-body {
            font-size: 2rem;
            color: <?php echo $isQualified ? '#28a745' : '#dc3545'; ?>;
        }
        .datetime-card .card-header {
            background: linear-gradient(90deg, #4b0082, #8a2be2);
        }
        .paper-sheet, .typed-text-display {
            background: white;
            border-radius: 15px;
            padding: 20px;
            margin: 20px 0;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
            font-size: 1.2rem;
            line-height: 1.7;
            text-align: justify;
        }
        .typed-text-display {
            background: #f9f9f9;
        }
        .omission {
            background-color: #ffecec;
            text-decoration: line-through;
            color: #dc3545;
        }
        .addition {
            background-color: #fff3bf;
            color: #856404;
        }
        .half-error {
            background-color: #fff3cd;
            border-bottom: 2px dashed #ffc107;
        }
        .full-error {
            background-color: #f8d7da;
            color: #721c24;
        }
        .error-legend span {
            display: inline-block;
            padding: 5px 10px;
            margin-right: 10px;
            border-radius: 5px;
            font-size: 0.9rem;
        }
        .btn-custom {
            border-radius: 25px;
            padding: 10px 30px;
            font-weight: 600;
            transition: all 0.3s;
            margin: 10px;
        }
        .btn-home {
            background: #28a745;
            color: white;
        }
        .btn-home:hover {
            background: #218838;
        }
        .btn-feedback {
            background: #007bff;
            color: white;
        }
        .btn-feedback:hover {
            background: #0056b3;
        }
        .formulas-container {
            background: white;
            border-radius: 15px;
            padding: 20px;
            margin: 20px 0;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
        }
        .formulas-container h3 {
            color: #1a3c34;
            margin-bottom: 15px;
        }
        .formulas-container p {
            margin: 10px 0;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .card-body {
                font-size: 1.2rem;
            }
            .qualification-card .card-body {
                font-size: 1.5rem;
            }
            .btn-custom {
                width: 100%;
            }
            .passage-info {
                font-size: 1rem;
            }
        }