.not-found-container{min-height:calc(100vh - 80px);display:flex;align-items:center;justify-content:center;padding:2rem;background:var(--bg-primary)}.not-found-content{max-width:600px;width:100%;text-align:center;display:flex;flex-direction:column;align-items:center;gap:2rem}.error-code{font-size:8rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin:0}.error-title{font-size:2rem;font-weight:700;color:var(--text-primary);margin:0}.error-description{font-size:1.125rem;color:var(--text-secondary);margin:0;line-height:1.6}.error-actions{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center;margin-top:1rem}.error-actions .btn-primary,.error-actions .btn-secondary{display:flex;align-items:center;gap:.5rem;padding:.875rem 1.75rem;border-radius:.5rem;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .3s ease,box-shadow .3s ease;border:none;min-width:140px;justify-content:center;-webkit-tap-highlight-color:transparent;-webkit-transform:translateZ(0);transform:translateZ(0);will-change:transform,box-shadow}.error-actions .btn-primary span,.error-actions .btn-primary svg{position:relative;z-index:1;color:#fff;stroke:currentColor}.error-actions .btn-primary{background:linear-gradient(135deg,#7c3aed,#a855f7);color:#fff!important;font-weight:700;border:2px solid transparent;position:relative;overflow:hidden}.error-actions .btn-primary:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(255,255,255,.15),transparent);pointer-events:none}.error-actions .btn-primary:hover{transform:translate3d(0,-2px,0);box-shadow:0 6px 20px #7c3aed99;background:linear-gradient(135deg,#8b5cf6,#c084fc)}.error-actions .btn-primary:active{transform:translateZ(0)}.error-actions .btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:2px solid var(--border)}.error-actions .btn-secondary:hover{background:var(--bg-tertiary);border-color:var(--primary);transform:translate3d(0,-2px,0)}.error-actions .btn-secondary:active{transform:translateZ(0)}.error-illustration{width:200px;height:200px;margin-top:2rem;opacity:.8}.error-illustration svg{width:100%;height:100%;animation:float 3s ease-in-out infinite;-webkit-transform:translateZ(0);transform:translateZ(0);will-change:transform}@keyframes float{0%,to{transform:translateZ(0)}50%{transform:translate3d(0,-10px,0)}}@media(max-width:768px){.not-found-container{padding:1.5rem 1rem}.not-found-content{gap:1.5rem}.error-code{font-size:6rem}.error-title{font-size:1.5rem}.error-description{font-size:1rem}.error-actions{flex-direction:column;width:100%}.error-actions .btn-primary,.error-actions .btn-secondary{width:100%}.error-illustration{width:150px;height:150px}}@media(max-width:480px){.not-found-container{padding:1rem .75rem}.not-found-content{gap:1.25rem}.error-code{font-size:5rem}.error-title{font-size:1.375rem}.error-description{font-size:.938rem;padding:0 .5rem}.error-actions .btn-primary,.error-actions .btn-secondary{padding:.75rem 1.5rem;font-size:.938rem;min-width:120px}.error-illustration{width:130px;height:130px;margin-top:1.5rem}}@media(max-width:360px){.not-found-container{padding:.75rem .5rem}.not-found-content{gap:1rem}.error-code{font-size:4rem}.error-title{font-size:1.25rem}.error-description{font-size:.875rem}.error-actions .btn-primary,.error-actions .btn-secondary{padding:.625rem 1.25rem;font-size:.875rem;min-width:110px}.error-illustration{width:110px;height:110px;margin-top:1rem}}@media(prefers-color-scheme:dark){.error-actions .btn-primary{box-shadow:0 4px 12px #6366f180}.error-actions .btn-primary:hover{box-shadow:0 6px 20px #6366f199}}