.error-page{background:var(--background);justify-content:center;align-items:center;width:100%;height:100vh;display:flex}.error-card{text-align:center;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-lg);animation:fadeIn var(--transition-normal);border-radius:1rem;padding:2.5rem 3rem}.error-title{color:var(--accent);margin-bottom:.5rem;font-size:4.5rem;font-weight:700}.error-description{color:var(--text-secondary);margin-bottom:1.5rem;font-size:1.1rem}.error-button{background:var(--accent);color:#fff;transition:background var(--transition-fast);border-radius:.6rem;padding:.7rem 1.2rem;font-weight:600;display:inline-block}.error-button:hover{background:var(--accent-hover)}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}