/* --- EXAMSPARK THEME CSS --- */
        :root {
            --primary-color: #4A90E2; 
            --accent-color: #FF6B6B;
            --bg-color: #F4F7F6;
            --text-dark: #333;
            --math-color: #8e44ad; /* Purple for Maths */
        }
        body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; margin: 0; background: var(--bg-color); color: var(--text-dark); }
        
        /* Navbar */
        header { background: white; padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 5px rgba(0,0,0,0.1); position: sticky; top: 0; z-index: 1000; }
        .logo-container { display: flex; align-items: center; gap: 10px; }
        .logo-img { height: 50px; width: auto; }
        .logo-text { font-size: 1.5rem; font-weight: bold; color: var(--primary-color); }
        .nav-links a { text-decoration: none; color: var(--text-dark); margin-left: 20px; font-weight: 500; }

        /* Main Container */
        .container { max-width: 1000px; margin: 2rem auto; padding: 0 1rem; }
        
        .page-header { text-align: center; margin-bottom: 3rem; }
        .page-header h1 { color: var(--math-color); margin-bottom: 0.5rem; }
        .page-header p { color: #666; font-size: 1.1rem; }

        /* Question Card Styles */
        .pyq-card {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 3px 6px rgba(0,0,0,0.05);
            border-left: 5px solid var(--math-color);
            transition: transform 0.2s;
        }

        .pyq-card:hover { transform: translateY(-2px); box-shadow: 0 5px 12px rgba(0,0,0,0.1); }

        .q-tag {
            display: inline-block;
            background: #eee;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: bold;
            color: #555;
            margin-bottom: 10px;
        }

        .q-topic { color: var(--math-color); font-weight: bold; font-size: 0.85rem; margin-left: 10px; text-transform: uppercase; }

        .question-text { font-size: 1.1rem; font-weight: 500; margin-bottom: 15px; color: #2c3e50; }

        /* Toggle Button */
        .toggle-btn {
            background-color: var(--math-color);
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 0.9rem;
            font-weight: 600;
            transition: background 0.3s;
            outline: none;
        }

        .toggle-btn:hover { background-color: #732d91; }
        .toggle-btn.active { background-color: #555; }

        /* Answer Box */
        .answer-content {
            display: none;
            margin-top: 15px;
            padding: 15px;
            background: #f8f9fa;
            border-radius: 6px;
            border-left: 3px solid #2ecc71;
            line-height: 1.6;
            color: #444;
        }

        /* Filter Section */
        .filter-bar {
            text-align: center;
            margin-bottom: 2rem;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .filter-btn {
            background: white;
            border: 1px solid #ddd;
            padding: 8px 15px;
            border-radius: 20px;
            cursor: pointer;
            color: #555;
            font-weight: 500;
        }
        .filter-btn:hover, .filter-btn.active { background: var(--math-color); color: white; border-color: var(--math-color); }
 /* ===== CTA BUTTON ===== */
.cta-btn {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 10px 18px;
    border-radius: 6px;
    text-decoration: none;
    margin: 10px 5px;
    font-weight: 500;
    transition: 0.2s;
}

.cta-btn:hover {
    background: #357ABD;
    transform: translateY(-2px);
}

/* ===== SOCIAL BOX ===== */
.social-box {
    background: linear-gradient(135deg, #f9f9f9, #eef2f5);
    border-left: 5px solid var(--primary-color);
    padding: 20px;
    border-radius: 10px;
    margin: 30px 0;
    text-align: center;
}

.social-box h3 {
    margin-bottom: 5px;
}

.social-box p {
    color: #666;
    font-size: 0.95rem;
}

/* SOCIAL BUTTONS */
.social-buttons {
    margin-top: 15px;
}

.social-buttons a {
    display: inline-block;
    margin: 8px;
    padding: 10px 15px;
    border-radius: 6px;
    text-decoration: none;
    color: white;
    font-weight: 500;
    transition: 0.2s;
}

/* INSTAGRAM */
.insta-btn {
    background: linear-gradient(45deg, #e1306c, #fd1d1d, #fcb045);
}

/* YOUTUBE */
.yt-btn {
    background: #ff0000;
}

/* HOVER EFFECT */
.social-buttons a:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}