footer{padding:2rem;background:transparent;border-top:1px solid var(--border-color)}.footer-content{max-width:1100px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.footer-links{display:flex;gap:2rem}.footer-links a{color:var(--text-muted);text-decoration:none;font-size:.875rem;transition:color .25s var(--smooth),transform .2s ease;position:relative;display:inline-flex;align-items:center;gap:.3rem}.footer-links a:after{content:"";position:absolute;bottom:-2px;left:50%;width:0;height:1px;background:var(--text-primary);transition:width .3s var(--spring),left .3s var(--spring)}.footer-links a:hover{color:var(--text-primary)}.footer-links a:hover:after{width:100%;left:0}.footer-copy{color:var(--text-muted);font-size:.75rem}.back-to-top{position:fixed;bottom:2rem;right:2rem;width:44px;height:44px;border-radius:50%;background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:999;opacity:0;transform:translateY(20px);transition:opacity .3s ease,transform .3s var(--spring),background .2s ease,color .2s ease;pointer-events:none}.back-to-top.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}.back-to-top:hover{background:var(--text-primary);color:var(--bg-primary)}@media(max-width:768px){footer{padding:2rem 1rem}.footer-content{flex-direction:column;align-items:center;text-align:center;gap:1.5rem}.footer-links{flex-direction:column;gap:1rem;width:100%}.footer-links a{width:100%;justify-content:center;padding:.5rem 0}.footer-copy{margin-top:1rem;font-size:.7rem}.back-to-top{bottom:1rem;right:1rem}}.btn-primary{background:var(--text-primary);color:var(--bg-primary);padding:1rem 2rem;border-radius:8px;text-decoration:none;font-weight:600;font-size:1rem;display:inline-flex;align-items:center;gap:.5rem;transition:transform .3s var(--spring),box-shadow .3s var(--smooth),opacity .2s ease;border:none;cursor:pointer;will-change:transform;position:relative;overflow:hidden}.btn-primary:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,#4a90d926,#2ecc711a);opacity:0;transition:opacity .3s ease}.btn-primary:hover:before{opacity:1}.btn-primary:hover{opacity:.92;transform:translateY(-3px) scale(1.03);box-shadow:0 10px 30px #4a90d933}.btn-primary:active{transform:translateY(-1px) scale(.98);box-shadow:0 2px 8px #4a90d91a}.btn-secondary{background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);padding:1rem 1.5rem;border-radius:8px;text-decoration:none;font-weight:500;display:inline-flex;align-items:center;gap:.5rem;transition:all .25s var(--smooth);cursor:pointer}.btn-secondary:hover{border-color:var(--text-muted);color:var(--text-primary)}.feature-card{background:transparent;border:none;padding:0;border-radius:14px;transform-style:preserve-3d;perspective:1200px;position:relative;will-change:transform;min-height:260px}.feature-card-inner{position:relative;width:100%;height:100%;transition:transform .6s var(--spring);transform-style:preserve-3d}.feature-card:hover .feature-card-inner,.feature-card:focus-within .feature-card-inner,.feature-card.is-flipped .feature-card-inner{transform:rotateY(180deg)}.feature-card-front,.feature-card-back{position:absolute;inset:0;backface-visibility:hidden;border-radius:14px;background:var(--bg-tertiary);border:1px solid var(--border-color);padding:2.25rem 2rem;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;transition:border-color .4s var(--smooth),box-shadow .4s var(--smooth);overflow:hidden}.feature-card-front{transform:rotateY(0)}.feature-card-back{transform:rotateY(180deg);background:color-mix(in srgb,var(--bg-secondary) 85%,var(--bar-default) 15%);align-items:center;text-align:center}.feature-card-front:before,.feature-card-back:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at var(--glow-x,50%) var(--glow-y,50%),rgba(74,144,217,.08),transparent 60%);opacity:0;transition:opacity .4s ease;pointer-events:none}.feature-card:hover .feature-card-front:before,.feature-card:hover .feature-card-back:before{opacity:1}.feature-card:hover .feature-card-front,.feature-card:hover .feature-card-back{border-color:color-mix(in srgb,var(--bar-default) 40%,var(--border-color) 60%);box-shadow:0 8px 32px -8px #4a90d91f}.feature-icon{width:48px;height:48px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.25rem;margin-bottom:1.25rem;transition:transform .4s var(--spring),background .4s ease}.feature-card:hover .feature-icon{transform:scale(1.1) rotate(-3deg);background:color-mix(in srgb,var(--bar-default) 12%,var(--bg-secondary) 88%)}.feature-card h3{font-size:1rem;font-weight:600;margin-bottom:.5rem}.feature-card p{color:var(--text-muted);font-size:.875rem}@media(max-width:768px){.feature-card{min-height:220px;padding:1.5rem}}@media(max-width:480px){.btn-primary,.btn-secondary{width:100%;justify-content:center;padding:.8rem 1rem;font-size:.9rem}}