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var(--transition)}.leaderboard-tab:hover{color:hsla(0,0%,100%,.7)}.leaderboard-tab.active{background:rgba(var(--accent-rgb),.2);color:#ffd93d}.leaderboard-empty,.leaderboard-loading{text-align:center;padding:var(--space-md)}.leaderboard-empty{color:hsla(0,0%,100%,.3);font-size:.82rem;font-style:italic}.leaderboard-list{display:flex;flex-direction:column;gap:2px}.leaderboard-row{display:flex;align-items:center;gap:var(--space-sm);padding:.45rem var(--space-md);border-radius:var(--radius-sm);background:hsla(0,0%,100%,.03);transition:background var(--transition)}.leaderboard-row:hover{background:hsla(0,0%,100%,.06)}.leaderboard-row.rank-1{background:rgba(255,215,0,.08);border:1px solid rgba(255,215,0,.2)}.leaderboard-row.rank-2{background:hsla(0,0%,75%,.06);border:1px solid hsla(0,0%,75%,.15)}.leaderboard-row.rank-3{background:rgba(205,127,50,.06);border:1px solid 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.3rem}.arcade-title{font-size:1.4rem}.arcade-controls{gap:var(--space-lg)}.arcade-controls,.arcade-screen-content{padding:var(--space-md)}.leaderboard-header{flex-direction:column;align-items:flex-start}.leaderboard-row{padding:.4rem var(--space-sm)}}.memory-game{position:relative}.memory-game-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-lg);flex-wrap:wrap;gap:var(--space-sm)}.memory-game-timer{font-size:1.4rem;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:hsla(0,0%,100%,.9)}.memory-game-timer--warning{color:#ffd93d}.memory-game-timer--danger{color:#ff6b6b;animation:pulse .5s infinite}.memory-game-attempts,.memory-game-progress{font-size:.9rem;color:hsla(0,0%,100%,.5);font-weight:600}.memory-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:var(--space-sm);gap:var(--space-sm);max-width:560px;margin:0 auto}.memory-card{aspect-ratio:1;border:2px solid hsla(0,0%,100%,.12);border-radius:var(--radius);background:hsla(0,0%,100%,.04);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:var(--space-sm);text-align:center;transition:all var(--transition);min-width:44px;min-height:44px;overflow:hidden}.memory-card:hover:not(:disabled){border-color:rgba(255,217,61,.4);transform:scale(1.03)}.memory-card:disabled{cursor:default}.memory-card--flipped{border-color:#ffd93d;background:rgba(255,217,61,.12)}.memory-card--matched{border-color:#6bcb77;background:rgba(107,203,119,.15);cursor:default;animation:popIn .3s ease}.memory-card-back{font-size:1.8rem;font-weight:700;color:hsla(0,0%,100%,.3);opacity:.4;-webkit-user-select:none;-moz-user-select:none;user-select:none}.memory-card-text{font-size:.82rem;font-weight:600;line-height:1.3;color:hsla(0,0%,100%,.85);word-break:break-word}.memory-card-text--xs{font-size:.65rem}.memory-card-text--sm{font-size:.72rem}.memory-card-text--md{font-size:.78rem}.memory-game-overlay{position:absolute;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;border-radius:var(--radius);z-index:10;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.memory-game-result{text-align:center;color:#fff;font-size:1.2rem;font-weight:700;padding:var(--space-xl)}.memory-game-score{font-size:.95rem;font-weight:400;margin-top:var(--space-md);opacity:.9}@media (max-width:480px){.memory-grid{grid-template-columns:repeat(3,1fr);gap:6px}.memory-card-text{font-size:.7rem}.memory-card-text--xs{font-size:.58rem}.memory-card-back{font-size:1.4rem}}