/* Subjects & Archives Page Styles */
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--dark-color);
            background-color: #f5f7ff;
            overflow-x: hidden;
        }

        /* Main Content */
        .main-content {
            min-height: calc(100vh - 70px);
            background: linear-gradient(135deg, #f8f9ff 0%, #f0f2ff 100%);
            padding: 40px 0;
        }

        .subjects-section {
            padding: 20px 0;
        }

        /* Section Title */
        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--secondary-color);
            margin-bottom: 20px;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            background: var(--accent-color);
            margin: 15px auto 0;
            border-radius: 2px;
        }

        /* Subjects Grid */
        .subjects-grid {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 1000px;
            margin: 0 auto;
            padding: 20px 0;
        }

        /* Subject Archive Container */
        .subject-archive-container {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 25px 30px;
            cursor: pointer;
            border: 1px solid rgba(67, 97, 238, 0.1);
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .subject-archive-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(67, 97, 238, 0.1), transparent);
            transition: left 0.5s;
        }

        .subject-archive-container:hover::before {
            left: 100%;
        }

        .subject-archive-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            border-color: var(--primary-color);
        }

        /* Subject Header */
        .subject-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            position: relative;
            z-index: 1;
        }

        .subject-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: var(--secondary-color);
            margin: 0;
            flex: 1;
            display: flex;
            justify-content: center;
        }

        /* Exam Options */
        .exam-options {
            display: none;
            margin-top: 20px;
            text-align: center;
        }

        .exam-options.active {
            display: block;
        }

        .exam-option-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-top: 15px;
        }

        .exam-option {
            padding: 15px;
            background: var(--light-color);
            border-radius: var(--border-radius);
            transition: var(--transition);
            text-align: center;
            border: 1px solid rgba(67, 97, 238, 0.1);
        }

        .exam-option:hover {
            background: rgba(67, 97, 238, 0.05);
            transform: translateY(-2px);
        }

        .exam-option-title {
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--primary-color);
        }

        .exam-option-btn {
            display: inline-block;
            padding: 8px 15px;
            background: var(--primary-color);
            color: white;
            border-radius: var(--border-radius);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .exam-option-btn:hover {
            background: var(--secondary-color);
            transform: translateY(-2px);
            color: white;
        }

        /* Responsive Styles */
        @media (max-width: 768px) {
            .section-title {
                font-size: 2rem;
            }

            .subject-archive-container {
                padding: 20px;
            }

            .subject-title {
                font-size: 1.2rem;
                text-align: center;
            }
            
            .exam-option-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .section-title {
                font-size: 1.8rem;
            }

            .subject-archive-container {
                padding: 15px;
            }

            .btn {
                padding: 8px 16px;
                font-size: 0.9rem;
            }
        }