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var(--border-color);color:#000;border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;display:flex}.contact-form-container{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:4px;padding:2.5rem}.contact-form{flex-direction:column;gap:1.25rem;display:flex}.form-group{flex-direction:column;gap:.4rem;display:flex}.form-group label{color:var(--text-secondary);font-size:.75rem;font-weight:600}.form-group input,.form-group textarea{border:1px solid var(--border-color);background-color:var(--bg-secondary);color:var(--text-primary);transition:var(--transition-fast);border-radius:4px;outline:none;padding:.75rem 1.15rem;font-family:inherit;font-size:.9rem}.form-group input:focus,.form-group textarea:focus{background-color:#fff;border-color:#000}.form-feedback{text-align:center;margin-top:.5rem;font-size:.8rem;font-weight:600}.form-feedback.success{color:#000}.form-feedback.error{color:#ff3b30}.footer{background-color:var(--bg-primary);padding:3.5rem 0}.footer-container{color:var(--text-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:2rem;font-size:.8rem;font-weight:600;display:flex}.footer-links{gap:2rem;display:flex}.footer-links a:hover{color:#000}.scroll-animate{opacity:0;transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1);transform:translateY(30px)}.scroll-animate.animated{opacity:1;transform:translateY(0)}@media (width<=1024px){section{padding:5rem 0}.hero-title{font-size:3.25rem}.sandbox-grid,.slide-item,.education-grid,.contact-grid{grid-template-columns:1fr;gap:2.5rem}.slide-item,.slide-track{height:auto}.slide-details-panel{border-right:none;border-bottom:1px solid var(--border-color);padding:2.5rem}.slide-visual-panel{height:320px}.slider-footer{padding:1.25rem 2.5rem}}@media (width<=768px){.container{padding:0 2rem}.hero-grid{grid-template-columns:1fr;gap:3.5rem}.hero-visual{order:-1;width:100%;max-width:500px;margin:0 auto}.menu-toggle{display:block}.nav-menu{border-bottom:1px solid var(--border-color);opacity:0;pointer-events:none;z-index:-1;background-color:#fff;flex-direction:column;gap:1.5rem;width:100%;padding:2rem;transition:transform .4s,opacity .3s;position:absolute;top:100%;left:0;transform:translateY(-100%);box-shadow:0 10px 20px #00000008}.nav-menu.open{opacity:1;pointer-events:auto;transform:translateY(0)}}@media (width<=480px){.container{padding:0 1.5rem}.hero-title{font-size:2.5rem}.hero-cta-group{flex-direction:column;width:100%}.hero-cta-group .btn{width:100%}.timeline{padding-left:2rem}.timeline:before{left:3px}.timeline-item:before{width:11px;height:11px;top:10px;left:-2rem}.timeline-content-card{padding:1.5rem}.slider-footer{flex-direction:column;gap:1.25rem;padding:1rem 1.5rem}.slider-progress-bar{width:100%;max-width:100%;margin:0}.contact-form-container{padding:1.5rem}#physics-canvas{height:250px}}