.not-found-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-app);padding:20px}.not-found-card{text-align:center;background:var(--surface);padding:50px 60px;border-radius:16px;box-shadow:var(--shadow-lg)}.not-found-code{display:block;font-size:80px;font-weight:800;color:var(--accent);line-height:1;margin-bottom:10px}.not-found-card h1{color:var(--text-h);font-size:26px;margin-bottom:12px}.not-found-card p{color:var(--text-muted);font-size:15px;margin-bottom:28px}.not-found-card button{background:var(--accent);color:white;border:none;padding:12px 28px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer}.not-found-card button:hover{background:var(--accent-hover)}