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0;border:0;cursor:pointer;transition:var(--transition)}.advanced-toggle-left{display:flex;align-items:center;gap:14px}.advanced-icon{width:42px;height:42px;display:flex;align-items:center;justify-content:center;background:var(--primary-50);border-radius:var(--radius);color:var(--primary-500);flex-shrink:0}.advanced-title{font-weight:600;color:var(--gray-800);display:block;text-align:left}.advanced-subtitle{font-size:.85rem;color:var(--gray-400);display:block;text-align:left;margin-top:2px}.chevron-icon{color:var(--gray-400);transition:var(--transition);flex-shrink:0}.advanced-toggle[aria-expanded=true] .chevron-icon,.semester-toggle .chevron-icon.rotated{transform:rotate(180deg)}.advanced-content{max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}.advanced-content.open{max-height:200px;padding:0 24px 24px}.advanced-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;padding-top:16px;border-top:1px solid var(--gray-100)}.advanced-field 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24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:28px}.course-row select:focus{border-color:var(--primary-400);box-shadow:0 0 0 3px rgba(99,102,241,.1)}.btn-remove{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:0;background:0 0;color:var(--gray-300);cursor:pointer;border-radius:var(--radius-sm);transition:var(--transition)}.btn-remove:hover{background:var(--red-50);color:var(--red-500)}.btn-add-class{display:flex;align-items:center;gap:8px;margin-top:16px;padding:10px 20px;border:1.5px dashed var(--gray-300);border-radius:var(--radius);background:0 0;color:var(--gray-500);font-weight:600;font-size:.9rem;cursor:pointer;transition:var(--transition)}.btn-add-class:hover{border-color:var(--primary-400);color:var(--primary-500);background:var(--primary-50)}.calculator-actions{display:flex;gap:16px;justify-content:center;margin-top:8px}.btn-calc{flex:1;max-width:260px}.results-card{background:#fff;border:1.5px solid var(--primary-100);border-radius:var(--radius-2xl);padding:40px;margin-top:40px;box-shadow:var(--shadow-lg),var(--shadow-glow);animation:resultsFadeIn .5s ease-out}@keyframes resultsFadeIn{0%{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.results-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.results-header h3{font-size:1.35rem;font-weight:700;color:var(--gray-900)}.btn-share{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius);border:1.5px solid var(--gray-200);background:#fff;color:var(--gray-500);cursor:pointer;transition:var(--transition)}.btn-share:hover{border-color:var(--primary-400);color:var(--primary-500);background:var(--primary-50)}.results-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:20px;align-items:center}.result-item{text-align:center;padding:20px;background:var(--gray-50);border-radius:var(--radius-lg)}.result-main{background:0 0;grid-row:span 1}.result-gpa-ring{position:relative;width:140px;height:140px;margin:0 auto}.gpa-ring-svg{width:100%;height:100%;transform:rotate(-90deg)}.gpa-ring-progress{transition:stroke-dashoffset 1.2s 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h4{font-size:.95rem;font-weight:600;color:var(--gray-700);margin-bottom:16px}.breakdown-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.breakdown-item{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;background:var(--gray-50);border-radius:var(--radius);border:1px solid var(--gray-100)}.breakdown-label{font-size:.85rem;font-weight:500;color:var(--gray-500)}.breakdown-value{font-size:1.1rem;font-weight:700;color:var(--gray-800)}.how-it-works-section{padding:80px 0;background:var(--gray-50)}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:40px}.step-card{background:#fff;border:1.5px solid var(--gray-100);border-radius:var(--radius-xl);padding:36px 28px;transition:var(--transition-slow);position:relative;overflow:hidden}.step-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(135deg,var(--primary-500),var(--violet-500));transform:scaleX(0);transition:var(--transition-slow)}.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-100)}.step-card:hover::before{transform:scaleX(1)}.step-number{font-size:3rem;font-weight:800;color:var(--gray-100);letter-spacing:-.05em;line-height:1;margin-bottom:16px}.step-icon{width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:var(--primary-50);border-radius:var(--radius);color:var(--primary-500);margin-bottom:20px}.step-card h3{margin-bottom:10px;color:var(--gray-800)}.step-card p{font-size:.9rem;color:var(--gray-500);line-height:1.7}.formula-card{background:#fff;border:1.5px solid var(--primary-100);border-radius:var(--radius-xl);padding:32px;box-shadow:var(--shadow),var(--shadow-glow)}.formula-card h3{display:flex;align-items:center;gap:10px;color:var(--primary-600);margin-bottom:20px}.formula-display{background:var(--gray-50);border-radius:var(--radius-lg);padding:24px;text-align:center;margin-bottom:16px}.formula-text{font-size:1.1rem;font-weight:600;color:var(--gray-700);display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap}.formula-fraction{display:inline-flex;flex-direction:column;align-items:center;vertical-align:middle}.fraction-top{padding-bottom:4px;border-bottom:2px solid var(--primary-400);color:var(--primary-600);font-size:.9rem}.fraction-bottom{padding-top:4px;color:var(--primary-600);font-size:.9rem}.formula-example{font-size:.9rem;color:var(--gray-500);background:var(--green-50);padding:12px 16px;border-radius:var(--radius);border-left:3px solid var(--green-500)}.grading-section{padding:80px 0}.grading-table-wrapper{background:#fff;border:1.5px solid var(--gray-100);border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow)}.grading-table{width:100%;border-collapse:collapse}.grading-table thead{background:var(--gray-50)}.grading-table th{padding:16px 20px;font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--gray-500);text-align:left;border-bottom:1.5px solid var(--gray-100)}.grading-table td{padding:14px 20px;font-size:.9rem;color:var(--gray-600);border-bottom:1px solid var(--gray-50);font-weight:500}.grading-table tr:last-child td{border-bottom:none}.grading-table tr:hover td{background:var(--gray-25)}.grade-badge{display:inline-flex;align-items:center;justify-content:center;padding:4px 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rgba(99,102,241,.1)!important}.icon-wrap{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;background:var(--primary-50);color:var(--primary-600);border-radius:8px}.contact-cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:48px}.contact-info-card{background:#fff;border:1.5px solid var(--gray-100);border-radius:var(--radius-xl);padding:32px 28px;transition:var(--transition-slow);position:relative;overflow:hidden}.contact-info-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(135deg,var(--primary-500),var(--violet-500));transform:scaleX(0);transition:var(--transition-slow)}.contact-info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-100)}.contact-info-card:hover::before{transform:scaleX(1)}.contact-info-icon{width:52px;height:52px;display:flex;align-items:center;justify-content:center;background:var(--primary-50);border-radius:var(--radius);color:var(--primary-500);margin-bottom:20px}.contact-info-icon-violet{background:rgba(139,92,246,.08);color:var(--violet-500)}.contact-info-icon-green{background:var(--green-50);color:var(--green-600)}.contact-info-card h3{font-size:1.15rem;font-weight:700;color:var(--gray-900);margin-bottom:8px}.contact-info-card p{font-size:.9rem;color:var(--gray-500);line-height:1.7;margin-bottom:16px}.contact-info-link{display:inline-flex;align-items:center;gap:6px;font-size:.9rem;font-weight:600;color:var(--primary-600);text-decoration:none;transition:var(--transition)}.contact-info-link:hover{color:var(--primary-700);gap:10px}.contact-info-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:var(--primary-50);color:var(--primary-600);border-radius:var(--radius-full);font-size:.8rem;font-weight:600}.contact-info-badge-green{background:var(--green-50);color:var(--green-600)}.contact-main-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:32px;align-items:start}.contact-form-card{background:#fff;border:1.5px solid var(--gray-100);border-radius:var(--radius-xl);padding:40px;box-shadow:var(--shadow);position:relative;overflow:hidden}.contact-form-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary-500),var(--violet-500),var(--primary-400))}.contact-form-header{margin-bottom:32px}.contact-form-header h2{font-size:1.5rem;font-weight:700;color:var(--gray-900);letter-spacing:-.02em;margin-bottom:8px}.contact-form-header p{font-size:.95rem;color:var(--gray-500)}.contact-form{display:flex;flex-direction:column;gap:24px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:.85rem;font-weight:600;color:var(--gray-700);letter-spacing:.01em}.form-group input,.form-group select,.form-group textarea{padding:12px 16px;border:1.5px solid var(--gray-200);border-radius:var(--radius);font-size:.9rem;font-family:var(--font-family);color:var(--gray-800);background:#fff;transition:var(--transition);outline:0}.form-group input::placeholder,.form-group textarea::placeholder{color:var(--gray-300)}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary-400);box-shadow:0 0 0 3px rgba(99,102,241,.1)}.form-group select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px;cursor:pointer}.form-group textarea{resize:vertical;min-height:140px;line-height:1.7}.contact-submit-btn{align-self:flex-start;min-width:200px}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(360deg)}}.spin-icon{animation:spin 1s linear infinite}.back-to-top{position:fixed;right:24px;bottom:24px;z-index:1100;width:48px;height:48px;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:var(--radius-full);color:#fff;background:linear-gradient(135deg,var(--primary-500),var(--violet-500));box-shadow:var(--shadow-lg);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:var(--transition)}.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top:hover{transform:translateY(-2px);box-shadow:var(--shadow-xl)}.back-to-top:focus-visible{outline:3px solid rgba(99,102,241,.25);outline-offset:3px}@media (max-width:480px){.back-to-top{right:16px;bottom:16px;width:44px;height:44px}}.contact-success{text-align:center;padding:60px 20px;animation:fadeUp .5s ease-out}.contact-success-icon{width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:var(--green-50);border-radius:50%;color:var(--green-600);margin:0 auto 24px;animation:scaleIn .4s cubic-bezier(.34,1.56,.64,1)}@keyframes scaleIn{0%{transform:scale(0);opacity:0}to{transform:scale(1);opacity:1}}.contact-success h3{font-size:1.5rem;font-weight:700;color:var(--gray-900);margin-bottom:12px}.contact-success p{font-size:1rem;color:var(--gray-500);margin-bottom:24px}.contact-sidebar{display:flex;flex-direction:column;gap:20px}.contact-sidebar-card{background:#fff;border:1.5px solid var(--gray-100);border-radius:var(--radius-xl);padding:28px;transition:var(--transition)}.contact-sidebar-card:hover{border-color:var(--gray-200);box-shadow:var(--shadow)}.contact-sidebar-header{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:var(--primary-500)}.contact-sidebar-header h3{font-size:1.05rem;font-weight:700;color:var(--gray-900);margin:0}.contact-sidebar-card>p{font-size:.88rem;color:var(--gray-500);line-height:1.7;margin-bottom:16px}.contact-faq-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px}.contact-faq-links li a{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-radius:var(--radius-sm);font-size:.85rem;color:var(--gray-600);text-decoration:none;transition:var(--transition)}.contact-faq-links li a:hover{background:var(--primary-50);color:var(--primary-600)}.contact-faq-links li a svg{color:var(--gray-300);transition:var(--transition);flex-shrink:0}.contact-faq-links li a:hover svg{color:var(--primary-500);transform:translateX(3px)}.contact-quick-links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px}.contact-quick-links li a{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:var(--radius-sm);font-size:.88rem;font-weight:500;color:var(--gray-600);text-decoration:none;transition:var(--transition)}.contact-quick-links li a:hover{background:var(--primary-50);color:var(--primary-600)}.contact-quick-links li a svg{color:var(--gray-400);flex-shrink:0}.contact-quick-links li a:hover svg{color:var(--primary-500)}.contact-privacy-note{background:linear-gradient(135deg,var(--primary-50),rgba(139,92,246,.04));border-color:var(--primary-100)}.contact-privacy-note p{margin-bottom:0}@media (max-width:968px){.contact-cards-grid{grid-template-columns:1fr}.contact-main-grid{grid-template-columns:1fr}}@media (max-width:768px){.form-row{grid-template-columns:1fr}.contact-form-card{padding:28px 24px}.contact-submit-btn{width:100%}}@media (max-width:480px){.contact-form-card{padding:24px 18px}.contact-sidebar-card{padding:20px 18px}.contact-info-card{padding:24px 20px}}