.btn{border:none;cursor:pointer;font-family:Poppins,sans-serif;font-weight:500;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;outline:none}.btn:focus-visible{outline:2px solid #007bff;outline-offset:2px}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.btn--small{padding:6px 12px;font-size:12px;border-radius:3px}.btn--medium{padding:8px 16px;font-size:14px;border-radius:4px}.btn--large{padding:12px 24px;font-size:16px;border-radius:5px}.btn--primary{background:linear-gradient(135deg,#007bff,#0056b3);color:#fff}.btn--primary:hover:not(:disabled){background:linear-gradient(135deg,#0056b3,#003d82);transform:translateY(-2px);box-shadow:0 4px 12px #007bff4d}.btn--primary:active:not(:disabled){transform:translateY(0)}.btn--secondary{background-color:transparent;color:#333;border:2px solid #333}.btn--secondary:hover:not(:disabled){background-color:#333;color:#fff;transform:translateY(-2px);box-shadow:0 4px 8px #0003}.btn--secondary:active:not(:disabled){transform:translateY(0)}.btn--ghost{background-color:transparent;color:#333;border:none;padding:8px}.btn--ghost:hover:not(:disabled){background-color:#0000000d;transform:scale(1.05)}.btn--ghost:active:not(:disabled){transform:scale(.95)}.btn:after{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#fff6;transform:translate(-50%,-50%);transition:width .6s,height .6s}.btn:active:not(:disabled):after{width:300px;height:300px}@media(prefers-reduced-motion:reduce){.btn,.btn:after{transition:none}.btn:hover:not(:disabled){transform:none}}@media(prefers-contrast:high){.btn--primary{border:2px solid white}.btn--secondary{border-width:3px}}.not-found-page{min-height:calc(100vh - 200px);display:flex;align-items:center;justify-content:center;padding:2rem 1rem;background:linear-gradient(to bottom,#fafafa,#fff)}.not-found-container{max-width:800px;width:100%;margin:0 auto}.not-found-content{text-align:center;animation:fadeInUp .6s ease-out}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.not-found-number{display:flex;justify-content:center;align-items:center;gap:.5rem;margin-bottom:2rem;perspective:1000px}.number-digit{font-size:clamp(4rem,12vw,8rem);font-weight:300;color:#1a1a1a;line-height:1;display:inline-block;opacity:.15;letter-spacing:-.02em;font-family:Poppins,Source Sans Pro,Inter,sans-serif;animation:float 3s ease-in-out infinite}.number-digit:nth-child(1){animation-delay:0s}.number-digit:nth-child(2){animation-delay:.2s}.number-digit:nth-child(3){animation-delay:.4s}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.not-found-title{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:600;color:#1a1a1a;margin-bottom:1rem;letter-spacing:-.01em;font-family:Poppins,Source Sans Pro,Inter,sans-serif}.not-found-message{font-size:clamp(1rem,2.5vw,1.125rem);color:#666;line-height:1.7;max-width:600px;margin:0 auto 2.5rem;font-weight:400}.not-found-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:3rem}.not-found-actions a{text-decoration:none}.not-found-suggestions{margin-top:3rem;padding-top:2.5rem;border-top:1px solid #e5e5e5}.suggestions-title{font-size:.95rem;color:#888;margin-bottom:1rem;font-weight:500;text-transform:uppercase;letter-spacing:.05em}.suggestions-list{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:1.5rem;justify-content:center}.suggestions-list li{margin:0}.suggestions-list a{color:#1a1a1a;text-decoration:none;font-size:.95rem;font-weight:400;position:relative;transition:color .3s ease;padding-bottom:2px}.suggestions-list a:after{content:"";position:absolute;bottom:0;left:0;width:0;height:1px;background-color:#1a1a1a;transition:width .3s ease}.suggestions-list a:hover{color:#333}.suggestions-list a:hover:after{width:100%}@media(max-width:768px){.not-found-page{min-height:calc(100vh - 150px);padding:1.5rem 1rem}.not-found-number{margin-bottom:1.5rem;gap:.25rem}.not-found-title{margin-bottom:.75rem}.not-found-message{margin-bottom:2rem;font-size:1rem}.not-found-actions{flex-direction:column;align-items:stretch;margin-bottom:2rem}.not-found-actions a,.not-found-actions button{width:100%}.not-found-suggestions{margin-top:2rem;padding-top:2rem}.suggestions-list{flex-direction:column;gap:.75rem}}@media(max-width:480px){.not-found-page{padding:1rem .75rem}.number-digit{font-size:3.5rem}.not-found-title{font-size:1.5rem}.not-found-message{font-size:.95rem}}@media(prefers-reduced-motion:reduce){.not-found-content,.number-digit{animation:none}.suggestions-list a:after{transition:none}}@media(prefers-contrast:high){.number-digit{opacity:.3}.not-found-message{color:#333}.suggestions-list a{text-decoration:underline}}