.error-container{min-height:calc(100vh - 200px);display:flex;align-items:center;justify-content:center}.error-number{font-size:8rem;font-weight:900;line-height:1;background:linear-gradient(135deg,#3b82f6,#8b5cf6,#ec4899);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.error-card{background:#0f172acc;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);border:1px solid rgba(148,163,184,.1);border-radius:1.5rem;box-shadow:0 25px 50px -12px #00000040}.back-home-btn{background:linear-gradient(135deg,#3b82f6,#8b5cf6);border:none;color:#fff;font-weight:600;padding:1rem 2rem;border-radius:.75rem;font-size:1.125rem;text-decoration:none;display:inline-flex;align-items:center;gap:.75rem}.back-home-btn:hover{opacity:.9}.contact-btn{background:linear-gradient(135deg,#1e293bcc,#334155cc);border:1px solid rgba(148,163,184,.3);text-decoration:none;color:inherit}.contact-btn:hover{opacity:.9}@media (max-width: 768px){.error-number{font-size:6rem}.error-card{margin:1rem;padding:2rem}}@media (max-width: 480px){.error-number{font-size:4rem}.error-card{padding:1.5rem}.back-home-btn{padding:.75rem 1.5rem;font-size:1rem}}