.not-found-container{display:flex;align-items:center;justify-content:center;min-height:70vh;padding:2rem}.not-found-content{text-align:center;max-width:420px}.not-found-emoji{font-size:4rem;margin-bottom:.5rem;animation:pulse-flag 2s ease-in-out infinite}@keyframes pulse-flag{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.1);opacity:.85}}.not-found-code{font-size:7rem;font-weight:800;line-height:1;margin:0;background:linear-gradient(135deg,var(--accent-blue),#60a5fa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-4px}.not-found-title{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin:.75rem 0 .5rem}.not-found-subtitle{font-size:1rem;color:var(--text-secondary);margin:0 0 2rem;line-height:1.5}.not-found-button{display:inline-block;padding:.75rem 1.75rem;background:var(--accent-blue);color:#fff;border-radius:var(--radius-sm);text-decoration:none;font-weight:600;font-size:.95rem;transition:all .2s ease;box-shadow:0 4px 14px var(--accent-blue-glow)}.not-found-button:hover{transform:translateY(-2px);box-shadow:0 8px 24px var(--accent-blue-glow)}