::backdrop,:fullscreen{background:linear-gradient(135deg,#faf5ff 0%,#fff7ed 50%,#f3e8ff 100%)}.activities-section{margin-top:calc(-1*var(--bk-header-h,4.75rem));background:linear-gradient(#fbbf2414 0%,#a855f70d 35%,#0000 70%);min-height:100vh;position:relative}.dark .activities-section{background:linear-gradient(#fbbf241a 0%,#a855f714 35%,#0000 70%)}.activities-section>:first-child{padding-top:var(--bk-header-h,4.75rem)}.activities-section>:first-child.fixed,.activities-section>:first-child:fullscreen{padding-top:0}.activity-sticky-bar{top:calc(var(--bk-header-h,4.75rem) + .35rem);z-index:30;margin-inline:auto;-webkit-backdrop-filter:saturate(1.45)blur(16px);backdrop-filter:saturate(1.45)blur(16px);background:#fffdfaeb;border:1px solid #a87a2a38;border-radius:9999px;width:min(80rem,100% - 1.25rem);margin-bottom:.75rem;padding:.5rem .75rem;position:sticky;box-shadow:0 10px 24px -16px #4a2a1c47,inset 0 1px #ffffffe6}.activity-content-width{width:min(80rem,100% - 1.25rem);margin-inline:auto}.activity-sticky-footer{bottom:max(.5rem,env(safe-area-inset-bottom,0px));z-index:40;-webkit-backdrop-filter:saturate(1.45)blur(16px);backdrop-filter:saturate(1.45)blur(16px);background:#fffdfaf0;border:1px solid #a87a2a38;border-radius:1rem;justify-content:space-between;align-items:center;gap:.75rem;width:min(80rem,100% - 1.25rem);padding:.75rem 1rem;display:flex;position:fixed;left:50%;transform:translate(-50%);box-shadow:0 -8px 28px -12px #4a2a1c47,inset 0 1px #ffffffe6}.activity-sticky-footer-insight{text-align:left;border:1px solid #0000;border-radius:.75rem;max-height:min(32vh,14rem);padding:.75rem .875rem;overflow-y:auto}.activity-sticky-footer-insight.is-correct{background:#f0fdf4f2;border-color:#bbf7d0e6}.activity-sticky-footer-insight.is-incorrect{background:#fffbebf2;border-color:#fde68ae6}.dark .activity-sticky-footer-insight.is-correct{background:#14532d59;border-color:#4ade8040}.dark .activity-sticky-footer-insight.is-incorrect{background:#78350f4d;border-color:#fbbf2440}.dark .activity-sticky-footer{background:#201a16e6;border-color:#e2c56a47;box-shadow:0 -10px 28px -14px #0000008c,inset 0 1px #ffecbe0f}.activity-sticky-footer-spacer{flex-shrink:0;height:5.5rem}.activity-sticky-footer-spacer.has-insight{height:14rem}@media (min-width:640px){.activity-sticky-footer-spacer.has-insight{height:12rem}}@media (min-width:768px){.activity-sticky-bar,.activity-sticky-subbar,.activity-content-width,.activity-sticky-footer{width:min(80rem,100% - 2rem)}}.dark .activity-sticky-bar{background:#201a16d1;border-color:#e2c56a47;box-shadow:0 12px 28px -18px #0000008c,inset 0 1px #ffecbe0f}.activities-section>.fixed .activity-sticky-bar,.activities-section>:fullscreen .activity-sticky-bar{top:.35rem}.activity-sticky-subbar{top:calc(var(--bk-header-h,4.75rem) + var(--bk-sticky-h,3.25rem) + .55rem);z-index:29;-webkit-backdrop-filter:saturate(1.45)blur(14px);backdrop-filter:saturate(1.45)blur(14px);background:#fffdfaf2;border:1px solid #a87a2a2e;border-radius:1rem;width:min(80rem,100% - 1.25rem);margin-inline:auto;position:sticky;overflow:hidden;box-shadow:0 10px 24px -16px #4a2a1c38}.dark .activity-sticky-subbar{background:#201a16e6;border-color:#e2c56a3d}.activities-section>.fixed .activity-sticky-subbar,.activities-section>:fullscreen .activity-sticky-subbar{top:calc(var(--bk-sticky-h,3.25rem) + .7rem)}.game-card-flip{transform-style:preserve-3d;transition:transform .3s}.game-card-flip.flipped{transform:rotateY(180deg)}@keyframes timer-pulse{0%,to{opacity:1}50%{opacity:.7}}.timer-warning{animation:.5s ease-in-out infinite timer-pulse}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}50%{transform:translate(4px)}75%{transform:translate(-4px)}}.shake{animation:.3s ease-in-out shake}.matched-glow{box-shadow:0 0 20px #22c55e66}.activities-bg-purple{background:linear-gradient(135deg,#faf5ff 0%,#f3e8ff 100%)}.activities-bg-warm{background:linear-gradient(135deg,#fff7ed 0%,#fef3c7 100%)}