.not-found-container{display:flex;align-items:center;justify-content:center;min-height:100vh;width:100%;background:linear-gradient(135deg,#f1f4f9,#dde6ee);padding:20px;font-family:Poppins,sans-serif;transition:all .3s ease}.not-found-container.dark{background:linear-gradient(135deg,#0a192f,#112240)}.not-found-card{background:white;max-width:500px;width:100%;padding:50px 30px;border-radius:20px;text-align:center;box-shadow:0 20px 40px rgba(0,0,0,.1);animation:floatCard 4s ease-in-out infinite}.not-found-container.dark .not-found-card{background:#112240;color:white;box-shadow:0 20px 40px rgba(0,0,0,.4)}.not-found-card h1{font-size:80px;margin:0;color:#ff7a00;line-height:1;font-weight:800}.not-found-card h2{font-size:24px;margin-top:10px;margin-bottom:12px;color:#1a1a1a}.not-found-container.dark .not-found-card h2{color:#f8fafc}.not-found-card p{color:#555;margin-bottom:30px;font-size:16px}.not-found-container.dark .not-found-card p{color:#cbd5e1}@keyframes floatCard{0%{transform:translateY(0)}50%{transform:translateY(-15px)}to{transform:translateY(0)}}