.app-header{background-color:var(--card-bg-color);padding:1rem 1.5rem;box-shadow:0 2px 4px #0000001a;position:sticky;top:0;z-index:1000;margin-bottom:2rem}.app-header nav{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:1200px;margin:0 auto;gap:1rem}.header-branding{display:flex;flex-direction:column;min-width:0}.header-branding .app-title{margin:0;color:var(--text-color);font-size:1.5rem;font-weight:600}.header-branding .welcome-message{margin:0;color:#a0aec0;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.header-controls{display:flex;align-items:center;gap:1.5rem}.points-display{display:flex;align-items:center;gap:.5rem;background-color:var(--background-color);padding:.5rem 1rem;border-radius:20px;font-weight:700;color:var(--text-color)}.points-display p{margin:0}.logout-button{background-color:#e53e3e!important;border:none;color:#fff;width:40px;height:40px;border-radius:6px;cursor:pointer;display:flex;justify-content:center;align-items:center;transition:background-color .2s ease;flex-shrink:0}.logout-button:hover{background-color:#c53030!important}.referral-link-catchy{display:inline-flex;align-items:center;gap:6px;font-size:.85rem;margin-top:4px;text-decoration:none;font-weight:600;color:#a0aec0;transition:all .2s ease;padding:4px 10px;background-color:#8b5cf61a;border-radius:20px;border:1px solid rgba(139,92,246,.2);width:fit-content}.referral-link-catchy:hover{background-color:#8b5cf633;transform:translateY(-1px);box-shadow:0 2px 8px #8b5cf626;text-decoration:none}@media (max-width: 768px){.referral-link-catchy{padding:0;width:40px;height:40px;border-radius:50%;display:inline-flex;justify-content:center;align-items:center;font-size:1.2rem;margin-top:2px;margin-right:.75rem;background-color:#8b5cf626;border:1px solid rgba(139,92,246,.3)}.referral-link-catchy span:not([role=img]){display:none}.referral-link-catchy:hover{background-color:#8b5cf640}.header-branding .app-title{font-size:1.2rem}.header-branding .welcome-message{font-size:.8rem}}.app-footer{text-align:center;padding:20px;background-color:var(--card-bg-color);color:#aaa;margin-top:auto}.footer-content{max-width:1200px;margin:0 auto}.main-layout{display:flex;flex-direction:column;min-height:100vh}.main-layout>main{flex-grow:1}.spinner{border:4px solid rgba(255,255,255,.3);border-top-color:var(--primary-color);border-radius:50%;width:24px;height:24px;animation:spin 1s linear infinite;margin:0 auto}.ui-button{padding:10px 24px;min-height:46px;display:flex;justify-content:center;align-items:center;background-color:var(--primary-color, #e53e3e);color:#fff;border:none;border-radius:6px;font-size:1rem;font-weight:700;cursor:pointer;transition:background-color .2s ease-in-out,transform .1s ease-in-out}.ui-button:hover{background-color:var(--primary-color-dark, #c53030)}.ui-button:active{transform:scale(.98)}.ui-button:disabled{background-color:#718096;cursor:not-allowed;opacity:.7}.modal-overlay{position:fixed;inset:0;background-color:#000000b3;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background-color:var(--background-color-dark);padding:2rem 2.5rem;border-radius:8px;width:90%;max-width:600px;position:relative;box-shadow:0 5px 15px #0000004d;border:1px solid var(--border-color)}.modal-close-button{position:absolute;top:15px;right:15px;background:none;border:none;font-size:1.5rem;color:var(--text-color-secondary);cursor:pointer;line-height:1}.homepage-content{text-align:center;padding:50px 20px}.homepage-content h1{font-size:2.5rem;color:var(--primary-color);margin-bottom:1rem}.homepage-content p{max-width:600px;margin:0 auto 2rem;font-size:1.1rem}.homepage-actions{display:flex;justify-content:center;gap:20px;align-items:center}.ui-input-container{display:flex;flex-direction:column;text-align:left;width:100%}.ui-input-container label{margin-bottom:5px;font-weight:700}.ui-input{width:100%;box-sizing:border-box;padding:10px;border:1px solid var(--border-color);border-radius:4px;background-color:#333;color:var(--text-color);transition:border-color .3s}.ui-input:focus{outline:none;border-color:var(--secondary-color)}.password-toggle-btn-below{background:none;border:none;color:#a78bfa;cursor:pointer;display:flex;align-items:center;gap:8px;align-self:flex-end;margin-top:8px;padding:0;font-size:.9rem;transition:color .2s ease}.password-toggle-btn-below:hover{color:#c4b5fd}.spinner-overlay{position:absolute;inset:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;border-radius:8px}.loading-spinner{width:50px;height:50px;border:8px solid var(--border-color);border-top:8px solid var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.auth-page{display:flex;flex-direction:column;min-height:100vh;background-color:var(--background-color)}.auth-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem;border-bottom:1px solid var(--border-color);background-color:var(--white-color)}.home-link{color:#e53935;transition:color .3s ease}.home-link:hover{color:#c62828}.auth-header h1{margin:0;font-size:2rem;color:var(--primary-color)}.auth-main{flex-grow:1}.auth-container{max-width:600px;margin:50px auto;padding:20px;background-color:var(--card-bg-color);border-radius:8px;box-shadow:0 4px 8px #0003;text-align:center;position:relative}.auth-container h2{color:var(--primary-color)}.auth-container form{display:flex;flex-direction:column;gap:15px;text-align:left}.password-wrapper{position:relative}.password-toggle-btn{position:absolute;top:50%;right:10px;transform:translateY(-50%);background:transparent;border:none;cursor:pointer;padding:0;display:flex;align-items:center;justify-content:center;color:#a78bfa;transition:color .2s ease}.password-toggle-btn:hover{color:#c4b5fd}.password-toggle-btn svg{width:24px;height:24px}.error-message-box{background-color:#4a1d1d;color:#f8b4b4;border:1px solid #e53e3e;border-radius:6px;padding:15px;margin-bottom:1.5rem;display:flex;align-items:center;gap:10px}.error-message-box p{margin:0;font-weight:700}.auth-container form .form-group{display:flex;flex-direction:column;text-align:left}.auth-container form .form-group label{margin-bottom:5px;font-weight:700}.auth-container form select{width:100%;padding:12px 15px;background-color:#333;color:var(--text-color);border:1px solid var(--border-color);border-radius:5px;font-size:1rem;box-sizing:border-box;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23cccccc%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E);background-repeat:no-repeat;background-position:right 15px top 50%;background-size:10px}.auth-link{display:inline-block;margin-top:20px;color:var(--text-color);text-decoration:none;transition:color .2s ease}.auth-link:hover{color:var(--primary-color)}.auth-links{display:flex;flex-direction:column;align-items:center;margin-top:20px;gap:10px}.auth-links a{color:var(--text-color-secondary);text-decoration:none;font-size:.9rem;transition:color .2s ease}.auth-links a:hover{color:var(--primary-color)}.auth-button{height:46px}.login-container{max-width:450px!important;width:425px;margin:50px auto;padding:40px;background-color:var(--card-bg-color);border-radius:8px;box-shadow:0 4px 8px #0003;text-align:center;position:relative}.login-container form{max-width:100%}.register-container{max-width:450px!important;width:425px;margin:50px auto;padding:40px;background-color:var(--card-bg-color);border-radius:8px;box-shadow:0 4px 8px #0003;text-align:center;position:relative}.register-container form{max-width:100%}.request-password-reset-container{max-width:450px!important;width:425px;margin:50px auto;padding:40px;background-color:var(--card-bg-color);border-radius:8px;box-shadow:0 4px 8px #0003;text-align:center;position:relative}.request-password-reset-container form{max-width:100%}.not-found-container{display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;min-height:calc(100vh - 120px);padding:20px}.not-found-container h1{font-size:6rem;font-weight:700;color:var(--primary-color);margin:0}.not-found-container h2{font-size:2rem;margin:10px 0;color:var(--text-color)}.not-found-container p{font-size:1.1rem;color:var(--text-color-secondary);margin-bottom:30px}.home-link-button{display:inline-block;padding:12px 28px;background-color:var(--primary-color);color:#fff;text-decoration:none;border-radius:6px;font-weight:700;transition:background-color .2s ease}.home-link-button:hover{background-color:var(--primary-color-dark)}.form-group{display:flex;flex-direction:column;margin-bottom:1rem;width:100%}.form-group label{margin-bottom:.5rem;font-weight:700;color:var(--text-color-secondary)}.form-group input,.form-group select{width:100%;padding:12px 15px;background-color:#333;color:var(--text-color);border:1px solid var(--border-color);border-radius:5px;font-size:1rem;box-sizing:border-box}.form-group select{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23cccccc%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E);background-repeat:no-repeat;background-position:right 15px top 50%;background-size:10px}.profile-container{max-width:600px;margin:50px auto;padding:20px;background-color:var(--card-bg-color);border-radius:8px;box-shadow:0 4px 8px #0003}.profile-container h2{text-align:center;color:var(--primary-color);margin-bottom:20px}.profile-details{background-color:#2c2c2c;padding:15px;border-radius:8px;margin-bottom:20px}.profile-details p{margin:10px 0}.profile-opt-in{margin-bottom:20px}.profile-opt-in label{display:flex;align-items:center;gap:10px}.profile-opt-in input[type=checkbox]{transform:scale(1.2)}.profile-actions{text-align:center}.institution-search-container{position:relative;width:100%}.suggestions-list{position:absolute;top:100%;left:0;right:0;background-color:#333;border:1px solid #555;border-radius:4px;list-style-type:none;padding:0;margin:5px 0 0;max-height:200px;overflow-y:auto;z-index:1000}.suggestion-item{padding:10px;cursor:pointer;border-bottom:1px solid #444}.suggestion-item:last-child{border-bottom:none}.suggestion-item:hover{background-color:#4a00e0}.suggestion-item--loading{padding:10px;font-style:italic;color:#888}.admin-form-section{max-width:600px;margin:40px auto;padding:20px;background-color:var(--card-bg-color);border-radius:8px;box-shadow:0 4px 8px #0003}.admin-form-section h3{text-align:center;color:var(--secondary-color);margin-bottom:1.5rem}.admin-form-section form{display:flex;flex-direction:column;gap:20px}.admin-form-section .form-group{display:flex;flex-direction:column;width:100%;gap:8px}.admin-form-section .form-group label{font-weight:700;color:var(--text-color-secondary)}.admin-form-section .form-group select{width:100%;padding:12px 15px;background-color:#333;color:var(--text-color);border:1px solid var(--border-color);border-radius:5px;font-size:1rem;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23cccccc%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E);background-repeat:no-repeat;background-position:right 15px top 50%;background-size:10px}.back-button{position:absolute;top:15px;left:20px;z-index:900;background:#6c5ce7;color:#fff;border:none;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 8px #0003;transition:all .3s ease}.back-button:hover{background:#5b4cdb;transform:scale(1.1);box-shadow:0 4px 12px #6c5ce766}.back-icon{font-size:18px;line-height:1}@media (max-width: 768px){.back-button{top:12px;left:12px;width:36px;height:36px}.back-icon{font-size:16px}}.theme-toggle-btn{position:absolute;top:15px;right:0;z-index:900;background:#6366f1;color:#fff;border:none;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 8px #0003;transition:all .3s ease}.theme-toggle-btn:hover{background:#8b5cf6;transform:scale(1.1);box-shadow:0 4px 12px #6366f166}.theme-toggle-btn:active{transform:scale(.95)}.theme-toggle-btn svg{width:20px;height:20px}@media (max-width: 768px){.theme-toggle-btn{top:12px;right:12px;width:36px;height:36px}.theme-toggle-btn svg{width:18px;height:18px}}.assignments-container{max-width:600px;margin:0 auto;padding:2rem 1rem 0}.assignments-header{position:fixed;top:150px;left:0;right:0;z-index:999;background-color:var(--background-color);padding:1rem 0;width:100%;max-width:600px;margin-left:auto;margin-right:auto}.assignments-header h2{text-align:center;margin:0;color:var(--primary-color)}.assignments-content{margin-top:80px}.assignment-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:1.5rem}.assignment-item{display:flex;justify-content:space-between;align-items:center;background-color:var(--card-bg-color);padding:1.5rem;border-radius:8px;box-shadow:0 4px 8px #0003;border-left:5px solid var(--border-color);transition:transform .2s ease-in-out}.assignment-item:hover{transform:translateY(-3px)}.assignment-item.status-assigned{border-left-color:var(--primary-color)}.assignment-item.status-submitted{border-left-color:#f0ad4e}.assignment-item.status-graded{border-left-color:#5cb85c}.assignment-details h3{margin:0 0 .5rem;color:var(--text-color)}.assignment-details p{margin:.25rem 0;color:var(--text-color-secondary);font-size:.9rem}.assignment-status{text-align:right;display:flex;flex-direction:column;align-items:flex-end;gap:.5rem}.assignment-item .status-badge{display:inline-block;padding:.3rem .7rem;border-radius:12px;font-size:.8rem;font-weight:700;color:#fff;background-color:var(--text-color-secondary);margin-bottom:.5rem;opacity:1!important;visibility:visible!important;z-index:10;position:relative}.assignment-item.status-assigned .status-badge{background-color:var(--primary-color)}.assignment-item.status-submitted .status-badge{background-color:#f0ad4e}.assignment-item.status-graded .status-badge{background-color:#5cb85c}.score{font-weight:700;font-size:1.2rem;margin:0}@media (max-width: 768px){.assignments-header{top:120px}}.service-sidebar{width:280px;background:#1a1a2e;color:#fff;padding:24px;overflow-y:auto;flex-shrink:0;transition:transform .3s ease}.service-sidebar.closed{transform:translate(-100%)}.sidebar-header{margin-bottom:32px}.category-icon{display:flex;align-items:center;margin-bottom:8px;color:#8b5cf6}.category-icon svg{width:32px;height:32px}.category-title{font-size:24px;font-weight:700;margin:0 0 4px;background:linear-gradient(135deg,#6366f1,#8b5cf6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.category-subtitle{font-size:14px;color:#9ca3af;margin:0}.sidebar-section{margin-bottom:32px}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.section-title{font-size:12px;font-weight:600;text-transform:uppercase;color:#9ca3af;letter-spacing:.5px;margin:0 0 12px}.new-conversation-btn{background:#6366f1;color:#fff;border:none;border-radius:50%;width:24px;height:24px;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.new-conversation-btn:hover{background:#8b5cf6;transform:scale(1.1)}.service-cards{display:flex;flex-direction:column;gap:12px}.service-card{background:#252541;border-radius:12px;padding:16px;cursor:pointer;transition:all .3s ease;position:relative;border:2px solid transparent}.service-card:hover:not(.disabled){transform:translateY(-2px);box-shadow:0 4px 12px #6366f14d;border-color:#6366f180}.service-card.active{border-color:#6366f1;background:#2d2d4a}.service-card.disabled{opacity:.6;cursor:not-allowed}.service-icon{display:flex;align-items:center;margin-bottom:8px;color:#8b5cf6}.service-icon svg{width:24px;height:24px}.service-info{flex:1}.service-name{font-size:16px;font-weight:600;margin:0 0 4px;color:#fff}.service-description{font-size:13px;color:#9ca3af;margin:0;line-height:1.4}.multimodal-indicator{margin-top:8px}.multimodal-icon{font-size:14px}.status-badge{position:absolute;top:12px;right:12px;padding:4px 8px;border-radius:12px;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.status-badge.active{background:#10b981;color:#fff}.status-badge.coming-soon{background:#3b82f6;color:#fff}.status-badge.planned{background:#6b7280;color:#fff}.conversation-list{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow-y:auto}.conversation-item{padding:12px;border-radius:8px;cursor:pointer;transition:background .2s ease}.conversation-item:hover{background:#ffffff0d}.conversation-title{font-size:14px;color:#fff;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conversation-meta{display:flex;justify-content:space-between;font-size:12px;color:#9ca3af}.empty-conversations{text-align:center;padding:20px;color:#6b7280;font-size:14px}@media (max-width: 1024px){.service-sidebar{position:fixed;left:0;top:60px;height:calc(100vh - 60px);z-index:1000;box-shadow:2px 0 8px #0003}}.concept-explainer-view{display:flex;flex-direction:column;height:100%}.concept-explainer-view .content-header{padding:1rem 2rem;border-bottom:1px solid var(--border-color);background:var(--surface-color)}.concept-explainer-view .content-header h2{margin:0;font-size:1.2rem;color:var(--primary-color)}.concept-explainer-view .content-body{flex:1;overflow-y:auto;padding:2rem}.concept-explainer-view .explainer-setup{padding:2rem;max-width:600px;margin:0 auto;width:100%;box-sizing:border-box}.concept-explainer-view .setup-header{text-align:center;margin-bottom:2rem}.concept-explainer-view .setup-header h2{font-size:2rem;color:var(--primary-color);margin-bottom:.5rem;display:none}.concept-explainer-view .setup-header p{color:var(--text-secondary)}.concept-explainer-view .setup-form{background:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color)}.concept-explainer-view .form-group{margin-bottom:1.5rem}.concept-explainer-view .form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--text-color)}.concept-explainer-view .form-group input[type=text],.concept-explainer-view .form-group select{width:100%;padding:.8rem;border-radius:8px;border:1px solid var(--border-color);background:var(--background-color);color:var(--text-color);font-size:1rem;transition:border-color .2s}.concept-explainer-view .form-group input[type=text]:focus,.concept-explainer-view .form-group select:focus{outline:none;border-color:var(--primary-color)}.concept-explainer-view .explain-btn{width:100%;padding:1rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;font-size:1.1rem;font-weight:700;cursor:pointer;margin-top:1rem;transition:opacity .2s}.concept-explainer-view .explain-btn:disabled{opacity:.7;cursor:not-allowed}.concept-explainer-view .explanation-result{flex:1;overflow-y:auto;padding:2rem;max-width:600px;margin:0 auto;width:100%;box-sizing:border-box}.concept-explainer-view .result-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.concept-explainer-view .result-header h2{margin:0;font-size:1.5rem;color:var(--primary-color)}.concept-explainer-view .new-explanation-btn{padding:.5rem 1rem;background:transparent;border:1px solid var(--primary-color);color:var(--primary-color);border-radius:6px;cursor:pointer;font-weight:600}.concept-explainer-view .explanation-content{background:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color)}.concept-explainer-view .main-text{font-size:1.1rem;line-height:1.6;color:var(--text-color);margin-bottom:2rem;white-space:pre-wrap}.concept-explainer-view .section-title{font-size:1.2rem;font-weight:700;color:var(--primary-color);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.concept-explainer-view .key-points,.concept-explainer-view .examples{margin-bottom:2rem;background:var(--background-color);padding:1.5rem;border-radius:8px}.concept-explainer-view .key-points ul,.concept-explainer-view .examples ul{margin:0;padding-left:1.5rem}.concept-explainer-view .key-points li,.concept-explainer-view .examples li{margin-bottom:.5rem;line-height:1.5}.concept-explainer-view .related-concepts{margin-top:2rem}.concept-explainer-view .concepts-list{display:flex;flex-wrap:wrap;gap:.8rem}.concept-explainer-view .concept-chip{padding:.5rem 1rem;background:#6366f11a;color:var(--primary-color);border:1px solid rgba(99,102,241,.2);border-radius:20px;cursor:pointer;transition:all .2s;font-size:.9rem}.concept-explainer-view .concept-chip:hover{background:var(--primary-color);color:#fff}@media (max-width: 600px){.concept-explainer-view .explainer-setup,.concept-explainer-view .explanation-result{padding:1.5rem}}.quiz-interface{display:flex;flex-direction:column;height:100%}.quiz-interface .content-header{padding:1rem 2rem;border-bottom:1px solid var(--border-color);background:var(--surface-color)}.quiz-interface .content-header h2{margin:0;font-size:1.2rem;color:var(--primary-color)}.quiz-interface .content-body{flex:1;overflow-y:auto;padding:2rem}.quiz-interface .quiz-setup{max-width:600px;margin:0 auto;width:100%;background:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color);box-sizing:border-box}.quiz-interface .form-group{margin-bottom:1.5rem}.quiz-interface .form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--text-color)}.quiz-interface .form-group input[type=text],.quiz-interface .form-group input[type=number]{width:100%;padding:.8rem;border-radius:8px;border:1px solid var(--border-color);background:var(--background-color);color:var(--text-color);font-size:1rem}.quiz-interface .form-group input:focus{outline:none;border-color:var(--primary-color)}.quiz-interface .difficulty-control{background:var(--background-color);padding:1rem;border-radius:8px;border:1px solid var(--border-color)}.quiz-interface .difficulty-slider{width:100%;margin-bottom:.5rem}.quiz-interface .difficulty-markers{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-secondary)}.quiz-interface button{width:100%;padding:1rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;font-size:1.1rem;font-weight:700;cursor:pointer;margin-top:1rem;transition:opacity .2s}.quiz-interface button:disabled{opacity:.7;cursor:not-allowed}.quiz-interface .quiz-questions{max-width:800px;margin:0 auto;width:100%}.quiz-interface .question-card{background:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color);margin-bottom:1.5rem}.quiz-interface .question-card h4{display:flex;justify-content:space-between;align-items:center;margin-top:0;color:var(--text-color)}.quiz-interface .difficulty-badge{background:#6366f11a;color:var(--primary-color);padding:.2rem .6rem;border-radius:4px;font-size:.8rem}.quiz-interface .options{display:flex;flex-direction:column;gap:.8rem;margin-top:1.5rem}.quiz-interface .option{display:flex;align-items:center;padding:1rem;border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:all .2s}.quiz-interface .option:hover{border-color:var(--primary-color);background:#6366f10d}.quiz-interface .option input{margin-right:1rem}.quiz-interface .correct{margin-left:auto;color:#10b981;font-weight:700}.quiz-interface .results{background:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color);text-align:center;margin-top:2rem}.quiz-interface .performance-msg{font-size:1.2rem;font-weight:700;color:var(--primary-color);margin:1rem 0}.quiz-interface .difficulty-update{background:#6366f11a;padding:1rem;border-radius:8px;margin:1rem 0}@media (max-width: 600px){.content-body{padding:1rem}.quiz-setup{padding:1.5rem;width:100%}}.practice-exam-view{display:flex;flex-direction:column;height:100%}.exam-header{background:var(--surface-color);padding:1rem 2rem;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.exam-info h3{margin:0;font-size:1.2rem;color:var(--text-color)}.exam-meta{font-size:.9rem;color:var(--text-secondary)}.exam-timer{font-size:1.5rem;font-weight:700;font-family:monospace;color:var(--text-color);background:var(--background-color);padding:.5rem 1rem;border-radius:8px;border:1px solid var(--border-color)}.exam-timer.warning{color:#ef4444;border-color:#ef4444;animation:pulse 1s infinite}.exam-content{flex:1;padding:2rem;overflow-y:auto;display:flex;justify-content:center}.question-header{display:flex;justify-content:space-between;margin-bottom:1rem}.q-difficulty{background:#6366f11a;color:var(--primary-color);padding:.2rem .6rem;border-radius:4px;font-size:.8rem;font-weight:700;text-transform:uppercase}.question-text{font-size:1.2rem;line-height:1.6;margin-bottom:2rem}.options-grid{display:grid;gap:1rem}.option-label{display:flex;align-items:center;padding:1rem;border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:all .2s}.option-label:hover{border-color:var(--primary-color);background:#6366f10d}.option-label.selected{border-color:var(--primary-color);background:#6366f11a}.option-label input{margin-right:1rem}.navigation-controls{display:flex;justify-content:space-between;margin-top:2rem}.navigation-controls button{padding:.8rem 1.5rem;border-radius:8px;border:none;font-weight:600;cursor:pointer;transition:transform .2s}.navigation-controls button:disabled{opacity:.5;cursor:not-allowed}.submit-btn{background:#10b981;color:#fff}.exam-results{text-align:center;max-width:800px;width:100%}.score-circle{width:150px;height:150px;border-radius:50%;background:conic-gradient(var(--primary-color) 0%,var(--primary-color) var(--score, 0%),var(--surface-color) var(--score, 0%),var(--surface-color) 100%);display:flex;flex-direction:column;justify-content:center;align-items:center;margin:2rem auto;position:relative}.score-circle:before{content:"";position:absolute;width:130px;height:130px;background:var(--background-color);border-radius:50%}.score-value{font-size:3rem;font-weight:700;z-index:1;color:var(--text-color)}.score-label{font-size:1rem;color:var(--text-secondary);z-index:1}.metrics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-top:3rem}.metric-card{background:var(--surface-color);padding:1.5rem;border-radius:12px;border:1px solid var(--border-color);text-align:left}.metric-card h4{margin-top:0;color:var(--text-secondary);font-size:.9rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:1rem}.metric-value{font-size:2rem;font-weight:700;margin-bottom:.5rem}.metric-value.positive{color:#10b981}.metric-value.negative{color:#ef4444}.metric-value.warning{color:#f59e0b}.metric-comparison{display:flex;justify-content:space-between;margin-bottom:1rem}.metric-comparison div{display:flex;flex-direction:column}.metric-comparison span{font-size:.8rem;color:var(--text-secondary)}.metric-comparison strong{font-size:1.2rem}.metric-details{font-size:.85rem;color:var(--text-secondary);border-top:1px solid var(--border-color);padding-top:.8rem;margin-top:.8rem}.metric-details p{margin:.4rem 0;line-height:1.4}.metric-details strong{color:var(--text-color)}.practice-exam-setup{padding:2rem;max-width:600px;margin:0 auto}.setup-header{text-align:center;margin-bottom:3rem}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:600}.form-group select,.form-group input[type=number]{width:100%;padding:.8rem;border-radius:8px;border:1px solid var(--border-color);background:var(--surface-color);color:var(--text-color)}.slider-container{padding:1rem 0}.month-slider{width:100%;margin-bottom:.5rem}.slider-labels{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-secondary)}.helper-text{font-size:.9rem;color:var(--text-secondary);margin-top:.5rem}.form-row{display:flex;gap:1rem}.form-group.half{flex:1}.timer-controls{display:flex;align-items:center;gap:1rem}.switch{position:relative;display:inline-block;width:50px;height:28px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;inset:0;background-color:#ccc;transition:.4s;border-radius:34px}.slider:before{position:absolute;content:"";height:20px;width:20px;left:4px;bottom:4px;background-color:#fff;transition:.4s;border-radius:50%}input:checked+.slider{background-color:var(--primary-color)}input:checked+.slider:before{transform:translate(22px)}.timer-input{display:flex;align-items:center;gap:.5rem}.timer-input input{width:70px!important}.generate-btn{width:100%;padding:1rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;font-size:1.1rem;font-weight:700;cursor:pointer;margin-top:1rem;transition:opacity .2s}.generate-btn:disabled{opacity:.7;cursor:not-allowed}.pressure-drill-setup{padding:2rem;max-width:600px;margin:0 auto;text-align:center}.setup-header h2{font-size:2rem;color:var(--primary-color);margin-bottom:.5rem}.start-drill-btn{background:linear-gradient(135deg,#ef4444,#b91c1c);color:#fff;padding:1rem 2rem;border:none;border-radius:8px;font-size:1.2rem;font-weight:700;cursor:pointer;width:100%;margin-top:1rem;transition:transform .2s}.start-drill-btn:hover{transform:scale(1.02)}.start-drill-btn:disabled{opacity:.7;cursor:not-allowed;transform:none}.pressure-drill-view{display:flex;flex-direction:column;height:100%}.drill-header{background:var(--surface-color);padding:1rem 2rem;border-bottom:1px solid var(--border-color);display:flex;justify-content:space-between;align-items:center}.drill-timer{font-size:2rem;font-weight:700;font-family:monospace;color:var(--text-color)}.drill-timer.critical{color:#ef4444;animation:pulse 1s infinite}@keyframes pulse{0%{opacity:1}50%{opacity:.5}to{opacity:1}}.drill-content{padding:2rem;flex:1;display:flex;justify-content:center}.question-container{max-width:800px;width:100%}.question-card{background:var(--surface-color);padding:2rem;border-radius:12px;box-shadow:0 4px 6px #0000001a;margin-bottom:1rem}.question-text{font-size:1.3rem;margin-bottom:1.5rem}.options-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.option-wrapper{padding:1rem;border:2px solid var(--border-color);border-radius:8px;background:transparent;color:var(--text-color);cursor:pointer;font-size:1rem;text-align:left;transition:all .2s;display:flex;align-items:center;gap:1rem}.option-wrapper:hover{border-color:var(--primary-color);background:#6366f10d}.option-wrapper.selected{border-color:var(--primary-color);background:#6366f11a;font-weight:700}.radio-circle{width:20px;height:20px;border-radius:50%;border:2px solid var(--border-color);display:flex;align-items:center;justify-content:center;flex-shrink:0}.option-wrapper.selected .radio-circle{border-color:var(--primary-color)}.radio-dot{width:10px;height:10px;border-radius:50%;background:var(--primary-color)}.review-section{margin-top:3rem;text-align:left;width:100%;max-width:800px}.review-section h3{margin-bottom:1.5rem;color:var(--text-color);border-bottom:1px solid var(--border-color);padding-bottom:.5rem}.review-card{background:var(--surface-color);padding:1.5rem;border-radius:8px;margin-bottom:1rem;border-left:4px solid transparent}.review-card.correct{border-left-color:#10b981;background:#10b9810d}.review-card.incorrect{border-left-color:#ef4444;background:#ef44440d}.review-question{font-size:1.1rem;margin-bottom:.5rem;color:var(--text-color)}.review-details{font-size:.95rem}.text-green{color:#10b981;font-weight:700}.text-red{color:#ef4444;font-weight:700}.review-correct-answer{color:#10b981;margin-top:.25rem}.navigation-controls{display:flex;justify-content:space-between;margin-top:1rem}.navigation-controls button{padding:.8rem 1.5rem;border-radius:6px;border:none;cursor:pointer;font-weight:600}.next-btn{background:var(--primary-color);color:#fff}.result-stats{display:flex;gap:2rem;justify-content:center;margin-top:2rem}.stat-box{background:var(--surface-color);padding:1.5rem;border-radius:12px;text-align:center;min-width:120px;border:1px solid var(--border-color)}.stat-value{display:block;font-size:2rem;font-weight:700;color:var(--primary-color)}.stat-label{font-size:.9rem;color:var(--text-secondary)}.syllabus-select{width:100%;padding:.8rem;border-radius:8px;border:1px solid var(--border-color);background-color:var(--surface-color);color:var(--text-color);font-size:1rem;appearance:none;background-image:url(data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23FFFFFF%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E);background-repeat:no-repeat;background-position:right .7em top 50%;background-size:.65em auto;padding-right:2.5em}.syllabus-select option{background-color:#1f2937;color:#fff;padding:10px}.loading-topics{color:var(--text-secondary);font-style:italic;padding:1rem}.topics-grid{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.5rem}.topic-chip{padding:.5rem 1rem;border-radius:20px;border:1px solid var(--border-color);background:var(--surface-color);color:var(--text-color);cursor:pointer;font-size:.9rem;transition:all .2s}.topic-chip:hover{border-color:var(--primary-color);background:#6366f10d}.topic-chip.selected{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.helper-text{font-size:.85rem;color:var(--text-secondary);margin-top:.5rem}.form-group input[type=text]{width:100%;padding:.8rem;border-radius:8px;border:1px solid var(--border-color);background:var(--surface-color);color:var(--text-color);font-size:1rem}.form-group input[type=text]:disabled{opacity:.6;cursor:not-allowed}.topic-error{color:#ef4444;font-size:.9rem;padding:1rem;background:#ef44441a;border-radius:8px;border:1px solid rgba(239,68,68,.2)}.socratic-tutor-view{display:flex;flex-direction:column;height:100%}.socratic-tutor-view .socratic-setup{padding:2rem;max-width:600px;margin:0 auto;width:100%;box-sizing:border-box}.socratic-tutor-view .setup-header{text-align:center;margin-bottom:3rem}.socratic-tutor-view .setup-header h2{font-size:2rem;color:var(--primary-color);margin-bottom:.5rem}.socratic-tutor-view .setup-header p{color:var(--text-secondary)}.socratic-tutor-view .setup-form{background:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color)}.socratic-tutor-view .form-group{margin-bottom:1.5rem}.socratic-tutor-view .form-group label{display:block;margin-bottom:.5rem;font-weight:600;color:var(--text-color)}.socratic-tutor-view .form-group input[type=text]{width:100%;padding:.8rem;border-radius:8px;border:1px solid var(--border-color);background:var(--background-color);color:var(--text-color);font-size:1rem;transition:border-color .2s}.socratic-tutor-view .form-group input[type=text]:focus{outline:none;border-color:var(--primary-color)}.socratic-tutor-view .start-learning-btn{width:100%;padding:1rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;font-size:1.1rem;font-weight:700;cursor:pointer;margin-top:1rem;transition:opacity .2s}.socratic-tutor-view .start-learning-btn:disabled{opacity:.7;cursor:not-allowed}.chat-interface{display:flex;flex-direction:column;height:100%;background:var(--surface-color);border-radius:12px;overflow:hidden}.chat-interface .content-header{padding:1rem 1.5rem;border-bottom:1px solid var(--border-color);background:var(--surface-color)}.chat-interface .content-header h2{margin:0;font-size:1.2rem;color:var(--primary-color)}.chat-interface .content-body{flex:1;display:flex;flex-direction:column;overflow:hidden}.chat-interface .chat-messages{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1rem}.chat-interface .message{max-width:80%;padding:1rem;border-radius:12px;line-height:1.5}.chat-interface .message.user{align-self:flex-end;background:var(--primary-color);color:#fff;border-bottom-right-radius:4px}.chat-interface .message.assistant{align-self:flex-start;background:var(--background-color);color:var(--text-color);border:1px solid var(--border-color);border-bottom-left-radius:4px}.chat-interface .message.loading{color:var(--text-secondary);font-style:italic;background:transparent;border:none;padding:0}.chat-interface .chat-input{padding:1.5rem;margin-top:1rem;display:flex;flex-direction:column;gap:1rem;background:var(--surface-color)}.chat-interface .input-row{display:flex;gap:1rem;width:100%}.chat-interface .input-row input{flex:1;padding:.8rem 1rem;border-radius:24px;border:1px solid var(--border-color);background:var(--background-color);color:var(--text-color);font-size:1rem}.chat-interface .input-row input:focus{outline:none;border-color:var(--primary-color)}.chat-interface .input-row button{padding:.8rem 1.5rem;border-radius:24px;background:var(--primary-color);color:#fff;border:none;font-weight:600;cursor:pointer;transition:opacity .2s}.chat-interface .input-row button:disabled{opacity:.6;cursor:not-allowed}.chat-interface .stop-session-btn{width:100%;padding:.8rem;background:transparent;color:#ef4444;border:1px solid #ef4444;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s}.chat-interface .stop-session-btn:hover{background:#ef44441a}@media (max-width: 600px){.socratic-setup{padding:1.5rem;width:100%}}.problem-solver-interface,.problem-solver-interface .setup-view{display:flex;flex-direction:column;height:100%}.problem-solver-interface .problem-solver-setup{padding:2rem;max-width:600px;margin:0 auto;width:100%;box-sizing:border-box}.problem-solver-interface .setup-header{text-align:center;margin-bottom:3rem}.problem-solver-interface .setup-header h2{font-size:2rem;color:var(--primary-color);margin-bottom:.5rem}.problem-solver-interface .setup-header p{color:var(--text-secondary)}.problem-solver-interface .setup-form{background:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color)}.problem-solver-interface .form-group{margin-bottom:1.5rem}.problem-solver-interface .form-group label{display:block;margin-bottom:.8rem;font-weight:600;color:var(--text-color)}.problem-solver-interface .form-group textarea{width:100%;padding:1rem;border-radius:12px;border:1px solid var(--border-color);background:var(--background-color);color:var(--text-color);font-size:1rem;resize:vertical;font-family:inherit;transition:border-color .2s;box-sizing:border-box}.problem-solver-interface .form-group textarea:focus{outline:none;border-color:var(--primary-color)}.problem-solver-interface .start-btn{width:100%;padding:1rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:opacity .2s}.problem-solver-interface .start-btn:disabled{opacity:.7;cursor:not-allowed}.problem-solver-interface.chat-mode .content-header{padding:1rem 1.5rem;border-bottom:1px solid var(--border-color);background:var(--surface-color);display:flex;justify-content:space-between;align-items:center}.problem-solver-interface .header-left{display:flex;flex-direction:column;gap:.25rem;overflow:hidden}.problem-solver-interface .content-header h2{margin:0;font-size:1.2rem;color:var(--primary-color)}.problem-solver-interface .problem-preview{font-size:.85rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.problem-solver-interface .content-body{flex:1;display:flex;flex-direction:column;overflow:hidden;padding:0;max-width:none;margin:0}.problem-solver-interface .chat-messages{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1rem}.problem-solver-interface .message{max-width:80%;padding:1rem;border-radius:12px;line-height:1.5}.problem-solver-interface .message.user{align-self:flex-end;background:var(--primary-color);color:#fff;border-bottom-right-radius:4px}.problem-solver-interface .message.assistant{align-self:flex-start;background:var(--surface-color);color:var(--text-color);border:1px solid var(--border-color);border-bottom-left-radius:4px}.problem-solver-interface .message.loading{color:var(--text-secondary);font-style:italic;background:transparent;border:none;padding:0}.problem-solver-interface .message-content p{margin:0 0 .5rem}.problem-solver-interface .message-content p:last-child{margin-bottom:0}.problem-solver-interface .chat-controls{padding:1.5rem;background:var(--surface-color);border-top:1px solid var(--border-color)}.problem-solver-interface .action-bar{display:flex;gap:1rem;margin-bottom:1rem}.problem-solver-interface .hint-btn,.problem-solver-interface .check-btn{flex:1;padding:.75rem;border-radius:8px;border:none;font-weight:600;cursor:pointer;transition:opacity .2s;display:flex;align-items:center;justify-content:center;gap:.5rem}.problem-solver-interface .hint-btn{background:#f59e0b1a;color:#f59e0b;border:1px solid rgba(245,158,11,.2)}.problem-solver-interface .hint-btn:hover{background:#f59e0b33}.problem-solver-interface .check-btn{background:#10b9811a;color:#10b981;border:1px solid rgba(16,185,129,.2)}.problem-solver-interface .check-btn:hover{background:#10b98133}.problem-solver-interface .input-area{display:flex;gap:1rem}.problem-solver-interface .input-area textarea{flex:1;padding:.8rem 1rem;border-radius:12px;border:1px solid var(--border-color);background:var(--background-color);color:var(--text-color);font-size:1rem;resize:none;font-family:inherit;box-sizing:border-box}.problem-solver-interface .input-area textarea:focus{outline:none;border-color:var(--primary-color)}.problem-solver-interface .send-btn{padding:0 1.5rem;background:var(--primary-color);color:#fff;border:none;border-radius:12px;font-weight:600;cursor:pointer}.problem-solver-interface .send-btn:disabled{opacity:.6;cursor:not-allowed}.problem-solver-interface .new-problem-container{margin-top:1.5rem;padding-top:1.5rem;border-top:1px dashed var(--border-color)}.problem-solver-interface .new-problem-btn{width:100%;padding:.8rem;background:transparent;border:1px solid var(--border-color);border-radius:8px;color:var(--text-secondary);font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:.5rem}.problem-solver-interface .new-problem-btn:hover{border-color:var(--primary-color);color:var(--primary-color);background:#6366f10d}.problem-solver-interface .new-problem-btn:before{content:"↺";font-size:1.2rem}@media (max-width: 600px){.problem-solver-interface .setup-form{padding:1.5rem}.problem-solver-interface .action-bar{flex-direction:column}}.problem-solver-interface.chat-mode .setup-header{padding:1.5rem;margin-bottom:0;background:var(--surface-color);border-bottom:1px solid var(--border-color)}.problem-solver-interface .problem-statement{color:var(--text-color);font-size:1rem;line-height:1.5;max-width:800px;margin:.5rem auto 0;white-space:pre-wrap;opacity:.9}.step-guide-view{display:flex;flex-direction:column;height:100%}.step-guide-view .content-header{padding:1rem 2rem;border-bottom:1px solid var(--border-color);background:var(--surface-color)}.step-guide-view .content-header h2{margin:0;font-size:1.2rem;color:var(--primary-color)}.step-guide-view .content-body{flex:1;overflow-y:auto;padding:2rem}.explainer-setup{background:var(--surface-color);border-radius:12px;padding:2rem;border:1px solid var(--border-color);box-shadow:0 4px 6px -1px #0000001a;max-width:600px;margin:0 auto}.setup-header h2{color:var(--primary-color);margin-bottom:.5rem}.setup-header p{color:var(--text-secondary);margin-bottom:2rem}.setup-form .form-group{margin-bottom:1.5rem}.setup-form label{display:block;font-weight:600;color:var(--text-color);margin-bottom:.5rem}.setup-form input{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:8px;font-size:1rem;transition:border-color .2s;background:var(--background-color);color:var(--text-color)}.setup-form input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #6366f11a}.create-guide-btn{width:100%;padding:.75rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:opacity .2s}.create-guide-btn:disabled{opacity:.7;cursor:not-allowed}.guide-result{display:flex;flex-direction:column;gap:2rem;max-width:800px;margin:0 auto}.guide-header{display:flex;justify-content:space-between;align-items:center;background:var(--surface-color);padding:1.5rem;border-radius:12px;box-shadow:0 2px 4px #0000000d;border:1px solid var(--border-color)}.guide-header h2{margin:0;color:var(--primary-color);font-size:1.5rem}.new-guide-btn{padding:.5rem 1rem;background:transparent;color:var(--primary-color);border:1px solid var(--primary-color);border-radius:6px;font-weight:500;cursor:pointer}.guide-overview{background:var(--background-color);border:1px solid var(--border-color);padding:1.5rem;border-radius:12px;color:var(--text-color)}.guide-overview h3{margin-top:0;color:var(--primary-color)}.steps-container{display:flex;flex-direction:column;gap:1.5rem}.step-card{background:var(--surface-color);border-radius:12px;overflow:hidden;box-shadow:0 4px 6px -1px #0000001a;transition:all .3s ease;opacity:0;transform:translateY(20px);animation:slideIn .5s forwards;border:1px solid var(--border-color)}@keyframes slideIn{to{opacity:1;transform:translateY(0)}}.step-card.completed{opacity:.7}.step-header{display:flex;align-items:center;padding:1rem 1.5rem;background:var(--background-color);border-bottom:1px solid var(--border-color)}.step-number{background:var(--primary-color);color:#fff;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;margin-right:1rem}.step-header h3{margin:0;font-size:1.1rem;color:var(--text-color)}.step-content{padding:1.5rem}.step-explanation{font-size:1.05rem;line-height:1.6;color:var(--text-color);margin-bottom:1.5rem}.step-extras{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.5rem}.checkpoint,.key-takeaway{background:var(--background-color);padding:1rem;border-radius:8px;border-left:4px solid}.checkpoint{border-left-color:#f59e0b}.key-takeaway{border-left-color:var(--primary-color)}.extra-title{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;font-weight:700;margin-bottom:.5rem;display:block}.checkpoint .extra-title{color:#d97706}.key-takeaway .extra-title{color:var(--primary-color)}.detailed-explanation{margin-top:1.5rem;padding:1.5rem;background:var(--background-color);border-radius:8px;border:1px solid var(--border-color)}.detailed-explanation h4{margin-top:0;margin-bottom:1rem;color:var(--primary-color);font-size:1.1rem}.markdown-content{color:var(--text-color);line-height:1.7;font-size:1rem}.markdown-content p{margin-bottom:1rem}.markdown-content p:last-child{margin-bottom:0}.markdown-content ul,.markdown-content ol{margin-bottom:1rem;padding-left:1.5rem}.markdown-content li{margin-bottom:.5rem}.markdown-content strong{color:var(--primary-color);font-weight:600}.explain-step-btn{background:transparent;border:1px solid var(--border-color);padding:.5rem 1rem;border-radius:6px;color:var(--text-secondary);cursor:pointer;font-size:.9rem;display:flex;align-items:center;gap:.5rem;transition:all .2s}.explain-step-btn:hover{border-color:var(--primary-color);color:var(--primary-color)}.guide-controls{display:flex;justify-content:center;padding:2rem 0}.next-step-btn{background:var(--primary-color);color:#fff;border:none;padding:1rem 2rem;border-radius:50px;font-size:1.1rem;font-weight:600;cursor:pointer;box-shadow:0 4px 6px -1px #10b9814d;transition:transform .2s;display:flex;align-items:center;gap:.5rem}.next-step-btn:hover{transform:translateY(-2px)}.practice-section{margin-top:3rem;border-top:2px dashed var(--border-color);padding-top:2rem}.practice-section h3{text-align:center;color:var(--text-color);margin-bottom:2rem}.practice-grid{display:grid;gap:1.5rem}.practice-card{background:var(--surface-color);padding:1.5rem;border-radius:12px;border:1px solid var(--border-color)}.difficulty-badge{display:inline-block;padding:.25rem .75rem;border-radius:50px;font-size:.8rem;font-weight:600;margin-bottom:1rem;text-transform:uppercase}.difficulty-easy{background:#10b9811a;color:#10b981}.difficulty-medium{background:#f59e0b1a;color:#f59e0b}.difficulty-hard{background:#ef44441a;color:#ef4444}.hint-toggle{background:none;border:none;color:var(--text-secondary);font-size:.9rem;cursor:pointer;margin-top:1rem;text-decoration:underline}.hint-text{margin-top:.5rem;color:var(--text-color);font-style:italic;background:var(--background-color);padding:.5rem;border-radius:4px}.hint-generator-interface{display:flex;flex-direction:column;height:100%;color:var(--text-primary);background:var(--bg-secondary);border-radius:16px;overflow:hidden;position:relative}.hint-generator-interface .setup-view{display:flex;flex-direction:column;height:100%}.hint-generator-interface .hint-generator-setup{padding:2rem;max-width:600px;margin:0 auto;width:100%;box-sizing:border-box}.hint-generator-interface .setup-header{text-align:center;margin-bottom:3rem}.hint-generator-interface .setup-header h2{font-size:2rem;margin-bottom:.5rem;color:var(--primary-color)}.hint-generator-interface .setup-header p{color:var(--text-secondary)}.hint-generator-interface .setup-form{width:100%;max-width:600px;display:flex;flex-direction:column;gap:1.5rem;background:var(--surface-color);padding:2rem;border-radius:12px;border:1px solid var(--border-color);box-sizing:border-box}.hint-generator-interface .form-group{display:flex;flex-direction:column;gap:.5rem;text-align:left}.hint-generator-interface .form-group label{font-weight:600;color:var(--text-primary);margin-left:.5rem}.hint-generator-interface textarea{width:100%;padding:1rem;border-radius:12px;border:1px solid var(--border-color);background:var(--background-color);color:var(--text-color);font-size:1rem;resize:vertical;font-family:inherit;transition:border-color .2s;box-sizing:border-box}.hint-generator-interface textarea:focus{outline:none;border-color:var(--primary-color)}.hint-generator-interface .generate-btn{width:100%;padding:1rem;background:var(--primary-color);color:#fff;border:none;border-radius:8px;font-size:1.1rem;font-weight:700;cursor:pointer;transition:opacity .2s}.hint-generator-interface .generate-btn:hover:not(:disabled){opacity:.9;transform:none}.hint-generator-interface .generate-btn:disabled{opacity:.7;cursor:not-allowed}.hint-generator-interface .results-view{display:flex;flex-direction:column;height:100%;padding:2rem;overflow-y:auto}.hint-generator-interface .problem-header{margin-bottom:2rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-color)}.hint-generator-interface .problem-header h3{font-size:.9rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-secondary);margin-bottom:.5rem}.hint-generator-interface .problem-text{font-size:1.1rem;line-height:1.6;color:var(--text-primary)}.hint-stack{display:flex;flex-direction:column;gap:1rem;flex:1;padding-bottom:2rem}.hint-card{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:12px;padding:1.5rem;position:relative;transition:all .3s cubic-bezier(.4,0,.2,1);overflow:hidden}.hint-card.locked{cursor:pointer;opacity:.8}.hint-card.locked:hover{transform:translateY(-2px);border-color:var(--primary-color)}.hint-card.revealed{background:rgba(var(--primary-rgb),.1);border-color:rgba(var(--primary-rgb),.3)}.hint-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.hint-badge{background:var(--bg-secondary);padding:.25rem .75rem;border-radius:20px;font-size:.85rem;font-weight:600;color:var(--text-secondary)}.hint-card.revealed .hint-badge{background:var(--primary-color);color:#fff}.hint-content{font-size:1.1rem;line-height:1.6;color:var(--text-primary);min-height:3rem;position:relative}.hint-blur{filter:blur(8px);-webkit-user-select:none;user-select:none;opacity:.5}.hint-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:10}.tap-to-reveal{background:#0009;color:#fff;padding:.5rem 1rem;border-radius:20px;font-weight:600;font-size:.9rem;display:flex;align-items:center;gap:.5rem;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.locked-message{color:var(--text-secondary);font-size:.9rem;font-style:italic;display:flex;align-items:center;gap:.5rem}.hint-controls{margin-top:auto;display:flex;justify-content:center;padding-top:1rem}.new-problem-btn{background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);padding:.75rem 1.5rem;border-radius:8px;cursor:pointer;transition:all .2s ease}.new-problem-btn:hover{background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--text-secondary)}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:1rem;color:var(--text-secondary)}.spinner{width:40px;height:40px;border:3px solid var(--bg-tertiary);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.service-work-area{flex:1;background:#fff;padding:0;overflow-y:auto;display:flex;flex-direction:column}.empty-state,.coming-soon-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;color:#6b7280;padding:32px}.empty-state-icon,.coming-soon-icon{font-size:64px;margin-bottom:24px}.empty-state h2,.coming-soon-state h2{font-size:24px;font-weight:600;color:#1f2937;margin:0 0 12px}.empty-state p{font-size:16px;color:#6b7280;margin:0}.service-description{font-size:16px;color:#6b7280;margin:0 0 24px;max-width:500px}@media (max-width: 768px){.empty-state,.coming-soon-state{padding:16px}}.service-layout{display:flex;height:calc(100vh - 60px);background:#fff;position:relative}.mobile-menu-toggle{display:none;position:fixed;top:70px;left:16px;z-index:1001;background:#6366f1;color:#fff;border:none;border-radius:8px;padding:8px 12px;cursor:pointer;box-shadow:0 2px 8px #00000026}.hamburger-icon{font-size:20px}@media (max-width: 1024px){.mobile-menu-toggle{display:block}}.feature-card{background-color:var(--card-bg-color);padding:20px;border-radius:8px;text-align:center;position:relative;transition:transform .2s;cursor:pointer}.feature-card:hover{transform:translateY(-5px)}.feature-card h3{margin-top:0;color:var(--primary-color)}.go-button{background:linear-gradient(145deg,#e8e0ff,#d4c5f9);border:none;color:#6c5ce7;width:50px;height:50px;border-radius:50%;cursor:pointer;box-shadow:5px 5px 10px #b8a8d8,-5px -5px 10px #fff;transition:all .2s ease-in-out;display:flex;align-items:center;justify-content:center;margin:10px auto 0}.go-button:hover{background:linear-gradient(145deg,#d4c5f9,#c5b3f0);transform:translateY(-2px);box-shadow:5px 5px 15px #a898c8,-5px -5px 15px #fff}.go-button:active{box-shadow:inset 2px 2px 5px #b8a8d8,inset -2px -2px 5px #f5f0ff;transform:translateY(0)}.go-icon{font-size:1.5rem}.study-plan-container{background-color:transparent;padding:20px;border-radius:8px;height:100%;display:flex;flex-direction:column}.study-plan-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.study-plan-header h2{margin:0}.study-plan-header p{margin:0;font-size:.9rem;color:var(--text-color-secondary)}.study-plan-content{flex-grow:1}.daily-plan-item-wrapper{padding:10px 0;border-bottom:1px solid var(--border-color)}.daily-plan-item-wrapper:last-child{border-bottom:none}.day-item{display:flex;justify-content:space-between;align-items:center;cursor:pointer;padding:5px;border-radius:4px;transition:background-color .2s ease}.day-item:hover{background-color:#2a2a2a}.day-item.active{color:var(--primary-color)}.day-label-group{display:flex;align-items:center;gap:10px}.day-label{font-weight:700}.day-checkbox{width:16px;height:16px;accent-color:var(--primary-color);pointer-events:none}.arrow{transition:transform .2s ease}.day-item.active .arrow{transform:rotate(180deg)}.activity-details{padding:15px 10px 10px 36px;border-top:1px solid #2a2a2a;margin-top:10px}.activity-details p{margin:0 0 5px;font-weight:700}.activity-details span{font-size:.9rem;color:var(--text-color-secondary)}.completion-toggle{margin-top:15px;display:flex;align-items:center;justify-content:flex-end;gap:8px}.completion-toggle label{cursor:pointer;font-size:.9rem;color:var(--text-color-secondary)}.completion-toggle input{cursor:pointer;width:18px;height:18px;accent-color:var(--primary-color)}.generate-plan-placeholder{display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;height:100%;gap:1rem}@media (max-width: 768px){.study-plan-header,.day-item{flex-direction:column;align-items:flex-start;gap:.5rem}.day-label-group{font-size:.9rem}.arrow{align-self:flex-end;position:absolute;right:20px;top:30px}.activity-details{padding:10px 5px 5px 20px}}.progress-tracker-container{background-color:transparent;padding:10px;border-radius:12px;color:#fff;box-shadow:none;position:relative;width:100%;max-width:100%;margin:0}.progress-tracker-container h2{text-align:center;margin-bottom:20px;color:#3b82f6}.scorecard-accordion{display:flex;flex-direction:column;gap:10px}.scorecard-category{background-color:#2d2d2d;border-radius:8px;border:1px solid #333;overflow:hidden;transition:all .3s ease}.scorecard-category.expanded{border-color:#3b82f6;background-color:#252525}.category-header{display:flex;justify-content:space-between;align-items:center;padding:15px;cursor:pointer;background-color:#2d2d2d;transition:background-color .2s}.category-header:hover{background-color:#333}.category-header h3{margin:0;font-size:1.1rem;color:#a78bfa}.toggle-icon{font-size:1.5rem;color:#6b7280;font-weight:700;line-height:1}.scorecard-category.expanded .toggle-icon{color:#3b82f6}.category-content{padding:15px;border-top:1px solid #333;background-color:#1f1f1f;animation:slideDown .3s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.stat-row{display:flex;justify-content:space-between;margin-bottom:8px;font-size:.95rem;padding:4px 0;border-bottom:1px solid #2d2d2d}.stat-row:last-child{border-bottom:none;margin-bottom:0}.stat-label{color:#ccc}.stat-value{font-weight:700;color:#fff}.error-message{color:#ef4444;text-align:center}@media (max-width: 480px){.category-header h3{font-size:1rem}.stat-row{font-size:.9rem}}.dashboard-accordion{background-color:transparent!important;border-radius:12px;overflow:hidden;margin-bottom:20px;box-shadow:none}.accordion-header{padding:15px 20px;background-color:transparent;cursor:pointer;display:flex;justify-content:center;gap:10px;align-items:center;flex-direction:row;flex-wrap:nowrap;transition:background-color .2s;border-radius:12px}.accordion-header:hover{background-color:#ffffff0d}.accordion-header h2{margin:10px;padding:0;font-size:1.17em;font-weight:700;color:var(--primary-color, #3b82f6);width:auto;white-space:nowrap;line-height:1}.accordion-toggle-icon{font-size:1.5rem;color:var(--text-secondary, #6b7280);transition:transform .3s ease}.accordion-toggle-icon.expanded{transform:rotate(180deg)}.accordion-content{max-height:0;overflow:hidden;transition:max-height .3s ease-out;background-color:transparent}.accordion-content.expanded{max-height:2000px;transition:max-height .5s ease-in}.accordion-content-inner{padding:20px}.dashboard-layout{max-width:1200px;margin:2rem auto;padding:0 1rem}.dashboard-layout h2{text-align:center;margin-bottom:2rem}.dashboard-outlet{margin-top:1rem}.dashboard-content{max-width:1000px;margin:50px auto;padding:20px}.dashboard-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-bottom:40px}.dashboard-summary{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}@media (max-width: 768px){.dashboard-summary{grid-template-columns:1fr}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(./KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(./KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(./KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(./KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(./KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(./KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(./KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(./KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(./KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(./KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(./KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(./KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(./KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(./KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(./KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(./KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(./KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(./KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(./KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(./KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(./KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(./KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(./KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(./KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(./KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(./KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(./KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(./KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(./KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(./KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(./KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(./KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(./KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(./KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(./KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(./KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(./KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(./KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(./KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(./KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(./KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(./KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(./KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(./KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(./KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(./KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(./KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(./KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(./KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(./KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(./KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(./KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(./KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(./KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(./KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(./KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(./KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(./KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(./KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.25"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}.assignment-view-container{max-width:900px;margin:40px auto;padding:20px;background-color:var(--card-bg-color);border-radius:8px}.back-link{display:inline-block;margin-bottom:2rem;color:var(--text-color-secondary);text-decoration:none;transition:color .2s}.back-link:hover{color:var(--primary-color)}.assignment-view-container h2{color:var(--primary-color);border-bottom:2px solid var(--border-color);padding-bottom:10px;margin-bottom:20px}.assignment-content{background-color:#2a2a2a;padding:20px;border-radius:5px;white-space:pre-wrap;line-height:1.6;color:var(--text-color)}.note-content{background:linear-gradient(135deg,#2a2a3e,#1f1f2e);padding:40px;border-radius:12px;box-shadow:0 4px 20px #0000004d;border:1px solid rgba(108,92,231,.2)}.note-content h1,.note-content h2,.note-content h3,.note-content h4{color:#b8a8ff;margin-top:2em;margin-bottom:.8em;line-height:1.4;font-weight:600}.note-content h1{font-size:2em;border-bottom:3px solid #6c5ce7;padding-bottom:.5em;margin-top:0}.note-content h2{font-size:1.6em;border-left:4px solid #6c5ce7;padding-left:1em}.note-content h3{font-size:1.3em;color:#9d8dff}.note-content p{line-height:1.9;margin-bottom:1.5em;color:#e0e0e0;font-size:1.05em;text-align:justify}.note-content ul,.note-content ol{margin:1.5em 0;padding-left:2em;line-height:1.9}.note-content li{margin-bottom:.8em;color:#d0d0d0}.note-content li::marker{color:#6c5ce7;font-weight:700}.note-content strong{color:#b8a8ff;font-weight:600}.note-content em{color:#9d8dff;font-style:italic}.note-content code{background-color:#6c5ce726;padding:2px 8px;border-radius:4px;color:#c5b3f0;font-family:Courier New,monospace;font-size:.95em}.note-content blockquote{border-left:4px solid #6c5ce7;margin:1.5em 0;font-style:italic;color:#b8a8ff;background-color:#6c5ce70d;padding:1em 1.5em;border-radius:4px}.mcq-question{background:linear-gradient(135deg,#2a2a3e,#252535);padding:25px;margin-bottom:25px;border-radius:10px;border-left:4px solid #6c5ce7;box-shadow:0 2px 10px #0003;transition:transform .2s,box-shadow .2s}.mcq-question:hover{transform:translateY(-2px);box-shadow:0 4px 15px #6c5ce74d}.question-text{font-size:1.1em;line-height:1.7;margin-bottom:1.2em;color:#e8e0ff;font-weight:500}.options-group{display:flex;flex-direction:column;gap:12px}.option-label{display:flex;align-items:center;padding:15px 20px;background-color:#ffffff08;border:2px solid rgba(108,92,231,.2);border-radius:8px;cursor:pointer;transition:all .3s ease;font-size:1.02em;color:#d0d0d0}.option-label:hover{background-color:#6c5ce71a;border-color:#6c5ce7;transform:translate(5px)}.option-label input[type=radio]{margin-right:15px;width:20px;height:20px;cursor:pointer;accent-color:#6c5ce7}.option-label input[type=radio]:checked+*{color:#b8a8ff;font-weight:600}.mcq-question-review{background:linear-gradient(135deg,#2a2a3e,#252535);padding:25px;margin-bottom:25px;border-radius:10px;border-left:4px solid #6c5ce7;box-shadow:0 2px 10px #0003}.options-group-review{display:flex;flex-direction:column;gap:10px}.option-review{padding:12px 18px;border-radius:6px;border:2px solid transparent;background-color:#ffffff08;transition:all .2s}.option-review.correct{background-color:#2ed57326;border-color:#2ed573;color:#7bed9f;font-weight:600}.option-review.incorrect{background-color:#ff475726;border-color:#ff4757;color:#ff6b81;font-weight:600}.option-review span{font-size:.9em;font-style:italic;margin-left:10px}.assignment-view-container hr{border:none;border-top:1px solid var(--border-color);margin:30px 0}.assignment-view-container form{display:flex;flex-direction:column;gap:15px}.assignment-view-container textarea{width:100%;box-sizing:border-box;padding:15px 40px 15px 15px;background-color:#333;color:var(--text-color);border:1px solid var(--border-color);border-radius:5px;font-size:1rem;line-height:1.5;resize:vertical}.open-ended-answer{padding-right:40px!important}.assignment-view-container .result-view{text-align:center}.feedback-box{background:linear-gradient(135deg,#2a2a3e,#252535);border-left:4px solid #6c5ce7;padding:20px 25px;margin:20px 0;text-align:left;border-radius:8px;box-shadow:0 2px 10px #0003}.feedback-box h4{color:#b8a8ff;margin-bottom:.8em;font-size:1.2em}.feedback-box p{line-height:1.7;color:#e0e0e0}.submission-details h3{margin-bottom:1.5rem;color:#b8a8ff;font-size:1.5em}.submitted-answers{white-space:pre-wrap;padding:15px;border-radius:5px;background-color:#333;margin-bottom:20px}.final-score{font-size:1.8rem;font-weight:700;text-align:right;color:#7bed9f;margin-top:2rem;padding:1rem;background:linear-gradient(135deg,#2ed5731a,#2ed5730d);border-radius:8px;border:2px solid rgba(46,213,115,.3)}@media (max-width: 768px){.note-content{padding:25px 20px}.mcq-question,.mcq-question-review{padding:20px 15px}.option-label{padding:12px 15px}}.open-ended-review{display:flex;flex-direction:column;gap:15px;margin-top:10px}.student-answer,.correct-answer{padding:15px;border-radius:6px;background-color:#ffffff08;border:1px solid var(--border-color)}.student-answer strong,.correct-answer strong{display:block;margin-bottom:8px;color:#b8a8ff;font-size:.95em;text-transform:uppercase;letter-spacing:.5px}.student-answer p,.correct-answer p{margin:0;line-height:1.6;color:#e0e0e0}.student-answer.correct{background-color:#2ed5731a;border-color:#2ed5734d}.student-answer.incorrect{background-color:#ff47571a;border-color:#ff47574d}.correct-answer{background-color:#6c5ce71a;border-color:#6c5ce74d}.exam-timer{font-size:1.2rem;font-weight:700;color:var(--text-color);background-color:var(--card-bg-color);padding:8px 16px;border-radius:20px;border:2px solid var(--primary-color);box-shadow:0 2px 8px #0003;transition:all .3s ease;margin-right:40px}.exam-timer.warning{color:#ff4757;border-color:#ff4757;animation:pulse 1s infinite}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}.referral-page{max-width:1200px;margin:0 auto;padding:2rem 1rem}.referral-container{max-width:450px;margin:0 auto;padding:20px;background-color:var(--card-bg-color);border-radius:8px;box-shadow:0 4px 8px #0003;text-align:center;position:relative}.referral-container h2{color:var(--primary-color);margin-bottom:1.5rem}.referral-container form{display:flex;flex-direction:column;gap:15px;text-align:left}.referral-container form .form-group{display:flex;flex-direction:column;text-align:left}.referral-container form .form-group label{margin-bottom:5px;font-weight:700}.form-group-checkbox{display:flex;align-items:center;gap:.5rem}.form-group-checkbox input[type=checkbox]{width:auto;margin:0}.form-group-checkbox label{margin:0;font-weight:400}.back-button-container{margin-top:2rem;padding-top:1.5rem;border-top:1px solid rgba(124,58,237,.2);display:flex;justify-content:center}.back-button{background-color:#7c3aed;color:#fff;border:none;width:40px;height:40px;border-radius:50%;font-size:18px;font-weight:600;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #0003;padding:0}.back-button:hover{background-color:#6d28d9;transform:scale(1.1);box-shadow:0 4px 12px #7c3aed66}.back-button:active{transform:scale(.95)}:root[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f9fafb;--text-primary: #1f2937;--text-secondary: #6b7280;--border-color: #e5e7eb}:root[data-theme=dark],:root{--bg-primary: #212121;--bg-secondary: #1a1a1a;--text-primary: #ffffff;--text-secondary: #9ca3af;--border-color: #374151}body{background-color:var(--bg-primary);color:var(--text-primary);transition:background-color .3s ease,color .3s ease}.ai-page-content{background-color:var(--bg-primary);color:var(--text-primary);min-height:100vh}.service-work-area{background:var(--bg-primary)!important;color:var(--text-primary)}.empty-state h2,.coming-soon-state h2{color:var(--text-primary)}.empty-state p,.service-description{color:var(--text-secondary)}input,textarea,select{background-color:var(--bg-secondary);color:var(--text-primary);border-color:var(--border-color)}input::placeholder,textarea::placeholder{color:var(--text-secondary)}.quiz-interface,.chat-interface,.problem-solver-interface{background:var(--bg-primary);color:var(--text-primary)}.quiz-interface .content-header,.chat-interface .content-header,.problem-solver-interface .content-header{position:fixed!important;top:60px!important;left:50%!important;transform:translate(-50%)!important;width:100%!important;max-width:800px!important;right:auto!important;z-index:100!important;background:var(--bg-secondary)!important;border-bottom:3px solid var(--border-color)!important;box-shadow:0 4px 12px #00000026!important;border-radius:0!important;padding:20px 0!important;margin:0!important;display:block!important}@media (max-width: 1024px){.quiz-interface .content-header,.chat-interface .content-header,.problem-solver-interface .content-header{left:0!important;transform:none!important;width:100%!important;max-width:100%!important;border-radius:0!important;padding-left:60px!important;padding-right:60px!important;box-sizing:border-box!important}}.quiz-interface .content-header h2,.chat-interface .content-header h2,.problem-solver-interface .content-header h2{width:100%!important;max-width:600px!important;margin:0 auto!important;padding:0 20px!important;color:var(--text-primary)!important;font-size:24px!important;font-weight:600!important;text-align:left!important;background:transparent!important;border:none!important;box-shadow:none!important}.quiz-interface .content-body,.chat-interface .content-body,.problem-solver-interface .content-body{margin-top:80px!important;padding:32px!important}.question-card{background:var(--bg-secondary);border:1px solid var(--border-color);padding:20px;border-radius:12px;margin-bottom:20px}.question-card h4{color:var(--text-primary);margin-bottom:12px}.question-card p{color:var(--text-primary);margin-bottom:16px}.option{display:flex;align-items:center;padding:12px;margin:8px 0;background:var(--bg-primary);border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:all .2s ease}.option:hover{border-color:#6366f1;background:var(--bg-secondary)}.option input[type=radio]{margin-right:12px}.option span{color:var(--text-primary)}.message{padding:12px 16px;border-radius:12px;margin:8px 0;max-width:80%}.message.user{background:#6366f1;color:#fff;margin-left:auto}.message.assistant{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-color)}.message-content{margin:0}button:not(.theme-toggle-btn):not(.mobile-menu-toggle):not(.new-conversation-btn):not(.logout-button):not(.back-button){background:#6366f1;color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s ease}button:not(.theme-toggle-btn):not(.mobile-menu-toggle):not(.new-conversation-btn):not(.logout-button):not(.back-button):hover:not(:disabled){background:#8b5cf6;transform:translateY(-1px)}button:disabled{opacity:.5;cursor:not-allowed}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:var(--text-primary);font-weight:500}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--border-color);font-size:14px}.results{background:var(--bg-secondary);border:1px solid var(--border-color);padding:20px;border-radius:12px;margin-top:20px}.results h3{color:var(--text-primary);margin-bottom:12px}.results p{color:var(--text-secondary);margin:8px 0}.hint-display{background:var(--bg-secondary);border-left:4px solid #6366f1;padding:16px;border-radius:8px;margin-top:20px}.hint-display h3{color:var(--text-primary);margin-bottom:8px}.hint-display p{color:var(--text-secondary)}.chat-input{display:flex;gap:12px;margin-top:20px;padding:16px;background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border-color)}.chat-input input{flex:1}.topic-setup,.quiz-setup,.problem-input{max-width:600px;margin:0 auto;padding:40px 20px}.topic-setup label,.quiz-setup label{display:block;margin-bottom:8px;color:var(--text-primary);font-weight:500}.chat-messages{max-height:500px;overflow-y:auto;padding:20px;margin-bottom:20px}.hint-controls{margin:20px 0}.hint-controls label{display:block;margin-bottom:8px;color:var(--text-primary);font-weight:500}.hint-controls input[type=range]{width:100%;margin:12px 0}@media (max-width: 1024px){.quiz-interface .content-header,.chat-interface .content-header,.problem-solver-interface .content-header{left:0!important}}:root{--primary-color: #5d3fd3;--secondary-color: #ff6f61;--background-color: #121212;--text-color: #f0f0f0}body{font-family:Arial,sans-serif;background-color:var(--background-color);color:var(--text-color);margin:0;padding:0}