body{margin:0;font-family:sans-serif;transition:background-color .3s ease,color .3s ease}.chapter-container,.subject-container{padding:24px}.chapter-title,.subject-title{font-size:24px;font-weight:700;margin-bottom:16px}.toptext p{width:70%;margin:20px 10vw}.chapter-list,.subject-list{list-style:none;padding:0;margin:0}.chapter-link,.subject-link{color:#2563eb;text-decoration:underline;text-transform:capitalize;font-size:16px;cursor:pointer}.chapter-link:hover,.subject-link:hover{color:#1d4ed8}.question-page{display:flex;min-height:90vh;scroll-behavior:smooth}.question-sidebar{width:25%;padding:16px;border-right:2px solid #ddd}.sidebar-title{margin-bottom:12px}.sidebar-list{list-style:none;padding:0;margin:0}.sidebar-link{color:#2563eb;text-decoration:underline;font-size:14px}.sidebar-link:hover{color:#1d4ed8}.question-main{width:75%;padding:16px}.question-heading{font-size:22px;font-weight:700;margin-bottom:24px;text-transform:capitalize}.question-box{margin-bottom:32px;scroll-margin-top:100px;animation:fadeInUp .6s ease forwards;opacity:0}@keyframes fadeInUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.question-text{font-size:18px;font-weight:600;margin-bottom:8px}.answer-text{font-size:16px;line-height:1.6}body.dark{background-color:#121212;color:#e0e0e0}body.dark .question-sidebar{border-color:#444}body.dark .chapter-link,body.dark .sidebar-link,body.dark .subject-link{color:#90cdf4}body.dark .chapter-link:hover,body.dark .sidebar-link:hover,body.dark .subject-link:hover{color:#63b3ed}.theme-toggle-btn{position:fixed;top:20px;right:20px;background:#2563eb;color:white;padding:8px 12px;border:none;border-radius:8px;cursor:pointer;z-index:1000}.theme-toggle-btn:hover{background:#1d4ed8}#back-to-top{position:fixed;bottom:20px;right:20px;background-color:#2563eb;color:white;border:none;border-radius:8px;padding:10px 14px;cursor:pointer;font-size:14px;display:none;z-index:1000;box-shadow:0 4px 6px rgba(0,0,0,.2)}#back-to-top:hover{background-color:#1d4ed8}@media (max-width:768px){.question-page{flex-direction:column}.question-main,.question-sidebar{width:100%;padding:12px}.question-heading{font-size:20px}.question-text{font-size:16px}.answer-text{font-size:15px}.sidebar-title{font-size:16px}.sidebar-link{font-size:14px}.chapter-title,.subject-title{font-size:20px}.chapter-link,.subject-link{font-size:15px}}@media (max-width:480px){.question-heading{font-size:18px;margin-bottom:16px}.question-text{font-size:15px}.answer-text{font-size:14px}.sidebar-title{font-size:15px;margin-bottom:10px}.sidebar-link{font-size:13px}.chapter-title,.subject-title{font-size:18px}.chapter-link,.subject-link{font-size:14px}#back-to-top,.theme-toggle-btn{padding:8px 10px;font-size:12px;top:12px;right:12px}}.loader{border:5px solid #f3f3f3;border-top-color:#22c55e;border-radius:50%;width:50px;height:50px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.card-grid{display:flex;flex-wrap:wrap;gap:50px;margin:100px}.subject-card{flex:1 1 250px;max-width:300px;background:linear-gradient(90deg,#4facfe,#00f2fe);color:white;border-radius:15px;display:flex;justify-content:space-between;align-items:center;padding:20px;transition:transform .2s ease;box-shadow:0 8px 16px rgba(0,0,0,.15)}.subject-card:hover{transform:scale(1.05)}.card-1{background:linear-gradient(90deg,#36d1dc,#5b86e5)}.card-2{background:linear-gradient(90deg,#667eea,#764ba2)}.card-3{background:linear-gradient(90deg,#f7971e,#ffd200)}.card-title{font-size:20px;margin:0}.card-desc{font-size:14px;opacity:.8}.card-button{background-color:white;color:#333;border-radius:50%;padding:10px 14px;font-size:16px;box-shadow:0 2px 6px rgba(0,0,0,.2)}.card-button:hover{background-color:#f0f0f0}.no-subjects{color:red}*{margin:0}.embededpdf{margin-bottom:400px}input,select{padding:10px;margin:.5rem 0;border-radius:6px;border:1px solid #ccc}.login-overlay{position:fixed;top:0;left:0;width:100%;height:100%;backdrop-filter:blur(8px);background:rgba(0,0,0,.4);z-index:1000;display:flex;justify-content:center;align-items:center}.login-modal{background:white;padding:2rem;border-radius:10px;width:90%;max-width:400px;box-shadow:0 10px 25px rgba(0,0,0,.3)}.login-modal h2{text-align:center;margin-bottom:1rem}.login-modal form{display:flex;flex-direction:column}.login-modal input,.login-modal select{padding:10px;margin-bottom:1rem;font-size:16px}.login-modal button{background-color:#0070f3;color:white;padding:10px;font-size:16px;border:none;border-radius:8px;cursor:pointer}.floating-greeting{position:fixed;z-index:9999;background:rgba(0,123,255,.9);color:white;padding:10px 15px;border-radius:8px;font-weight:700;box-shadow:0 4px 10px rgba(0,0,0,.2);user-select:none;transition:box-shadow .2s ease}.floating-greeting:hover{box-shadow:0 6px 14px rgba(0,0,0,.3)}.card-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.card-content{margin-bottom:20px}.card-title{font-size:1.5rem;margin-bottom:8px;color:#facc15}.card-desc{color:#eeeeee}.card-button{position:absolute;bottom:15px;right:15px;background-color:#3b82f6;padding:10px 15px;border-radius:8px;transition:background .3s}.card-button:hover{background-color:#2563eb}@media (max-width:768px){.mcqs-heading{font-size:1.5rem}.card-title{font-size:1.2rem}.card-desc{font-size:.95rem}.card-button{padding:8px 12px;font-size:1rem}}@media (max-width:480px){.mcqs-container{padding:15px 10px}.card-grid{gap:15px}.subject-card{padding:15px}.card-title{font-size:1.1rem}.card-button,.card-desc{font-size:.9rem}.card-button{bottom:10px;right:10px;padding:6px 10px}}.subject-card:hover{transform:scale(1.03)}.card-content{margin-bottom:16px}.card-title{margin:0 0 10px;color:#fcd34d}.card-button{background-color:#facc15;color:#111827;padding:10px 16px;font-size:1.1rem;transition:background-color .2s ease}.card-button:hover{background-color:#eab308}.no-subjects{text-align:center;color:#f87171;margin-top:20px}@media (max-width:900px){.card-grid{grid-template-columns:repeat(2,1fr)}.mcqs-heading{font-size:1.7rem}.card-title{font-size:1.2rem}.card-desc{font-size:.95rem}}@media (max-width:600px){.card-grid{grid-template-columns:1fr}.mcqs-container{padding:15px}.mcqs-heading{font-size:1.4rem}.subject-card{padding:15px}.card-button{font-size:1rem;padding:8px 12px}}.chapter-title{color:#1f2937}.bordered-frame{width:100%;height:700px;border:2px solid #d1d5db;border-radius:8px}@media (max-width:1024px){.chapter-title{font-size:1.6rem;margin:16px 0}.bordered-frame{height:600px}}@media (max-width:600px){.chapter-title{font-size:1.4rem;padding:0 10px}.bordered-frame{height:500px;border-width:1px}}.card-content{flex:1}.card-title{font-size:1.4rem;font-weight:600;margin:0 0 8px;color:#111827}.card-desc{font-size:.95rem;margin:0}.card-button{font-size:1.8rem;color:#2563eb;padding-left:16px;flex-shrink:0}.card-button:hover{color:#1d4ed8}@media (max-width:900px){.card-grid{grid-template-columns:repeat(2,1fr)}.mcqs-heading{font-size:1.8rem}.card-title{font-size:1.2rem}}@media (max-width:600px){.card-grid{grid-template-columns:1fr}.mcqs-container{padding:12px 10px}.mcqs-heading{font-size:1.5rem}.subject-card{flex-direction:column;align-items:flex-start;padding:16px}.card-button{align-self:flex-end;padding-left:0;margin-top:10px;font-size:1.6rem}}.container{max-width:1200px;margin:0 auto;padding:0 1rem;box-sizing:border-box}h1,h2,h3,h4{font-weight:600;line-height:1.2;margin:40px}p{line-height:1.5;margin-bottom:1rem;font-size:1rem;color:#000000}html{font-size:16px}@media (max-width:768px){html{font-size:15px}}@media (max-width:480px){html{font-size:14px}}.notes-wrapper{display:flex;gap:2rem}.sidebar{flex:1;max-width:300px;background:#f7f7f7;border-radius:5px;max-height:80vh}.notes-content{flex:3;min-width:0}.notes-content embed,.notes-content iframe,.notes-content object{width:100%;height:60vh;border:none;border-radius:5px}@media (max-width:768px){.notes-wrapper{flex-direction:column}.sidebar{max-width:100%;max-height:none;margin-bottom:1.5rem}}a.button,button{display:inline-block;padding:.6rem 1.2rem;font-size:1rem;border-radius:4px;border:none;color:rgb(0,0,0);cursor:pointer;text-decoration:none;text-align:center;transition:background-color .3s ease}a.button:hover,button:hover{background-color:#005bb5}.info{color:#000000}img{max-width:100%;height:auto;display:block;margin:0 auto}section{margin-bottom:2rem}.card-grid{gap:20px}.card-content{margin-bottom:10px}.card-title{margin:0 0 5px}.card-desc{font-size:1rem}.card-button{font-size:1.5rem;text-decoration:none;color:#0070f3;font-weight:700;transition:color .3s ease}.card-button:hover{color:#005bb5}@media (max-width:600px){.mcqs-heading{font-size:1.5rem}.card-grid{grid-template-columns:1fr}.subject-card{padding:12px}.card-title{font-size:1.1rem}.card-desc{font-size:.9rem}.card-button{font-size:1.3rem}}.chapter-container{max-width:900px;margin:0 auto;padding:20px}.chapter-title{font-size:2rem;text-align:center;margin-bottom:25px;color:#222}.chapter-list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:15px;justify-content:center}.chapter-list li{flex:1 1 30%;background:#f1f1f1;padding:15px 20px;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,.1);text-align:center;transition:background-color .3s ease}.chapter-list li:hover{background-color:#d3e0ff}.chapter-link{text-decoration:none;color:#0070f3;font-weight:600;font-size:1.1rem;display:block}@media (max-width:768px){.chapter-title{font-size:1.6rem;margin-bottom:20px}.chapter-list li{flex:1 1 45%;padding:12px 15px;font-size:1rem}}@media (max-width:480px){.chapter-title{font-size:1.3rem;margin-bottom:15px}.chapter-list{flex-direction:column;gap:12px}.chapter-list li{flex:1 1 100%;padding:10px 15px;font-size:1rem}}.subject-card:hover{transform:translateY(-5px);box-shadow:0 8px 15px rgb(0 0 0/.15)}.card-content{flex-grow:1}.card-title{font-size:1.25rem;margin-bottom:.5rem;color:#111}.card-desc{margin-bottom:1rem}.card-button{padding:.6rem 1rem;font-size:1.2rem;border-radius:4px;cursor:pointer;transition:background-color .25s ease}@media (max-width:600px){.mcqs-heading{font-size:1.5rem}.card-grid{grid-template-columns:1fr}.subject-card{padding:1rem}.card-title{font-size:1.1rem}.card-button{font-size:1rem;padding:.5rem .8rem}}.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}.subject-card:hover{box-shadow:0 6px 16px rgba(0,0,0,.15)}.card-content{margin-bottom:1rem}.card-title{font-size:1.3rem;font-weight:700;color:#222;margin-bottom:.3rem;text-transform:capitalize}.card-desc{font-size:.9rem;color:#ffffff}.card-button{align-self:flex-end;background-color:#0070f3;border:none;color:white;font-size:1.3rem;padding:.5rem 1rem;border-radius:6px;transition:background-color .3s ease}.card-button:hover{background-color:#005bb5}@media (max-width:900px){.card-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:600px){.mcqs-container{padding:0 .75rem}.mcqs-heading{font-size:1.5rem}.card-grid{grid-template-columns:1fr}.subject-card{padding:1rem}.card-title{font-size:1.1rem}.card-desc{font-size:.85rem}.card-button{font-size:1.1rem;padding:.45rem .85rem}}.pyqviewer-container{display:flex;height:100vh;overflow:hidden}.sidebar{width:300px;padding:1rem;border-right:1px solid #ccc;overflow-y:auto;background-color:#f9f9f9;box-sizing:border-box}.sidebar h3{margin-top:0}.sidebar ul{list-style:none;padding-left:0;margin:0}.sidebar li{cursor:pointer;margin-bottom:10px;color:#007bff;text-decoration:underline;user-select:none}.sidebar li:hover{color:#0056b3}.main-content{flex:1;padding:1rem;box-sizing:border-box;overflow:auto}.main-content iframe{width:100%;border:none}@media (max-width:900px){.pyqviewer-container{flex-direction:column;height:auto}.sidebar{width:100%;border-right:none;border-bottom:1px solid #ccc;max-height:200px}.main-content{height:calc(100vh - 200px);min-height:300px}}@media (max-width:600px){.sidebar{max-height:100vh;padding:.75rem}.sidebar li{font-size:.9rem}.main-content{padding:.75rem;height:calc(100vh - 150px)}}@media (max-width:768px){.notes-container{padding:10px}.notes-container,.notes-container.reverse-layout{flex-direction:column!important}.notes-text{text-align:center;margin-bottom:20px}.notes-heading{font-size:1.5rem}.notes-description{font-size:1rem;line-height:1.4}.notes-button{width:100%;max-width:300px;padding:12px 0;font-size:1rem;margin:0 auto;display:block}.notes-image img{width:100%!important;height:auto!important;max-height:300px;border:1px solid #ccc;border-radius:10px}embed{height:400px!important;max-width:100%;width:100%!important}}@media (max-width:600px){form{max-width:100%!important;padding:0 1rem}form button,form input,form select{width:100%!important;box-sizing:border-box}form input,form select{margin-bottom:1rem;font-size:1.1rem;padding:.6rem .8rem}form button{padding:.8rem;font-size:1.1rem}.login-overlay{width:100vw;height:100vh;position:sticky;top:0}}.MATHSOLUTION{width:50%}.content p,.footer-bottom p{color:white}@media (min-width:768px){button.toggle-sidebar{display:none}}.answer-text{color:#000000}.pyqsPdf{width:80vw;height:80vh}.exercisemath{margin:200px}.chapter-detail-container{padding:20px;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f9f9f9;min-height:100vh}.intro-text{margin-bottom:30px}.intro-text h1{font-size:28px;color:#2c3e50;margin-bottom:10px}.intro-text p{font-size:16px;line-height:1.6;color:#333}.exercise-layout{display:flex;gap:20px}.exercise-sidebar{width:250px;background-color:#fff;border:1px solid #ddd;padding:20px;border-radius:8px;box-shadow:0 2px 6px rgba(0,0,0,.05);height:fit-content}.sidebar-title{font-size:18px;font-weight:700;margin-bottom:15px}.exercise-list{list-style-type:none;padding:0;margin:0}.exercise-list li{margin-bottom:10px}.exercise-link{display:block;color:#0070f3;text-decoration:none;font-weight:500;transition:color .2s}.exercise-link:hover{color:#0050b3;text-decoration:underline}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/8d697b304b401681-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/ba015fad6dcf6784-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:Geist;font-style:normal;font-weight:100 900;font-display:swap;src:url(/_next/static/media/4cf2300e9c8272f7-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:Geist Fallback;src:local("Arial");ascent-override:95.94%;descent-override:28.16%;line-gap-override:0.00%;size-adjust:104.76%}.__className_188709{font-family:Geist,Geist Fallback;font-style:normal}.__variable_188709{--font-geist:"Geist","Geist Fallback"}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(/_next/static/media/886030b0b59bc5a7-s.woff2) format("woff2");unicode-range:u+0460-052f,u+1c80-1c8a,u+20b4,u+2de0-2dff,u+a640-a69f,u+fe2e-fe2f}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(/_next/static/media/0aa834ed78bf6d07-s.woff2) format("woff2");unicode-range:u+0301,u+0400-045f,u+0490-0491,u+04b0-04b1,u+2116}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(/_next/static/media/67957d42bae0796d-s.woff2) format("woff2");unicode-range:u+0370-0377,u+037a-037f,u+0384-038a,u+038c,u+038e-03a1,u+03a3-03ff}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(/_next/static/media/f911b923c6adde36-s.woff2) format("woff2");unicode-range:u+0102-0103,u+0110-0111,u+0128-0129,u+0168-0169,u+01a0-01a1,u+01af-01b0,u+0300-0301,u+0303-0304,u+0308-0309,u+0323,u+0329,u+1ea0-1ef9,u+20ab}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(/_next/static/media/939c4f875ee75fbb-s.woff2) format("woff2");unicode-range:u+0100-02ba,u+02bd-02c5,u+02c7-02cc,u+02ce-02d7,u+02dd-02ff,u+0304,u+0308,u+0329,u+1d00-1dbf,u+1e00-1e9f,u+1ef2-1eff,u+2020,u+20a0-20ab,u+20ad-20c0,u+2113,u+2c60-2c7f,u+a720-a7ff}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(/_next/static/media/bb3ef058b751a6ad-s.p.woff2) format("woff2");unicode-range:u+00??,u+0131,u+0152-0153,u+02bb-02bc,u+02c6,u+02da,u+02dc,u+0304,u+0308,u+0329,u+2000-206f,u+20ac,u+2122,u+2191,u+2193,u+2212,u+2215,u+feff,u+fffd}@font-face{font-family:JetBrains Mono Fallback;src:local("Arial");ascent-override:75.79%;descent-override:22.29%;line-gap-override:0.00%;size-adjust:134.59%}.__className_3c557b{font-family:JetBrains Mono,JetBrains Mono Fallback;font-style:normal}.__variable_3c557b{--font-jetbrains:"JetBrains Mono","JetBrains Mono Fallback"}