:root,.theme-dark{--bg-main:#0f172a;--bg-card:#1e293b;--accent-blue:#38bdf8;--text-main:#f8fafc;--text-muted:#cbd5e1;--border-color:#334155}.theme-light{--bg-main:#f8fafc;--bg-card:#fff;--accent-blue:#0284c7;--text-main:#0f172a;--text-muted:#475569;--border-color:#cbd5e1}body{background-color:var(--bg-main);color:var(--text-main);margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;line-height:1.5;transition:background-color .3s,color .3s}.portfolio-container{max-width:1000px;margin:0 auto;padding:3rem 1.5rem}h1{letter-spacing:-.5px;margin:0 0 .5rem;font-size:2.5rem;font-weight:800}h2{border-left:4px solid var(--accent-blue);letter-spacing:-.5px;margin-top:0;margin-bottom:1.5rem;padding-left:.75rem;font-size:1.75rem}.skills-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-top:1.5rem;display:grid}.skill-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem;transition:border-color .2s,transform .2s}.skill-card:hover{border-color:var(--accent-blue);transform:translateY(-2px)}@media (max-width:768px){.portfolio-container{padding:1.5rem 1rem}.nav-links{gap:1rem;flex-direction:column!important;align-items:flex-start!important}.nav-links div{flex-wrap:wrap;justify-content:space-between;width:100%;gap:.75rem!important}.responsive-hero{text-align:center;align-items:center;flex-direction:column-reverse!important}h2{text-align:left}.contact-grid{grid-template-columns:1fr!important;gap:2.5rem!important}}