:root{color:#f7f8ff;font-synthesis:none;text-rendering:optimizelegibility;--ink:#f7f8ff;--muted:#a9b0ca;--surface:#11152bd1;--surface-strong:#151a35;--line:#bfc7ff29;--violet:#8b5cf6;--violet-strong:#7042e8;--blue:#3b82f6;--cyan:#38bdf8;--success:#34d399;--yellow:#fbbf24;background:#080b18;font-family:Inter,Segoe UI,Tahoma,Arial,system-ui,sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;min-width:320px}body{background:radial-gradient(circle at 8% 16%,#8b5cf638,#0000 27rem),radial-gradient(circle at 92% 76%,#38bdf829,#0000 30rem),linear-gradient(150deg,#080b18 0%,#0d1024 52%,#090d1b 100%);min-width:320px;min-height:100vh;margin:0;overflow-x:hidden}body:before,body:after{z-index:-1;content:"";pointer-events:none;position:fixed}body:before{border:1px solid #8b5cf62e;border-radius:50%;width:34rem;height:34rem;animation:14s ease-in-out infinite alternate ambient-drift;inset-block-start:-18rem;inset-inline-end:-9rem;box-shadow:0 0 0 74px #3b82f606,0 0 0 148px #38bdf805}body:after{background:linear-gradient(90deg,#0000,#67e8f961,#0000);width:22rem;height:1px;animation:10s ease-in-out infinite alternate light-sweep;inset-block-start:28%;inset-inline-start:-6rem;transform:rotate(-18deg);box-shadow:0 30px #8b5cf624,0 60px #3b82f61a}button,a{font:inherit}button{color:inherit}button:focus-visible,a:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}.app-shell{width:min(1160px,100% - 40px);margin:0 auto;padding-bottom:34px}.topbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;min-height:82px;display:flex}.brand{color:var(--ink);align-items:center;gap:11px;text-decoration:none;display:inline-flex}.brand-mark{border-radius:10px;width:40px;height:40px;box-shadow:0 8px 24px #3b82f62e}.brand-copy{gap:2px;display:grid}.brand-copy strong{letter-spacing:0;font-size:.96rem}.brand-copy small{color:var(--muted);font-size:.67rem}.language-button,.restart-button,.play-again,.start-button{cursor:pointer;border-radius:7px;justify-content:center;align-items:center;gap:8px;font-weight:750;display:inline-flex}.language-button{border:1px solid var(--line);background:#11152bad;min-height:42px;padding:9px 13px}.language-button:hover{background:#191f3de6;border-color:#67e8f97a}.hero{justify-content:space-between;align-items:end;gap:40px;padding:46px 0 32px;display:flex}.vibex-badge{color:#d9ceff;background:#8b5cf617;border:1px solid #8b5cf659;border-radius:6px;align-items:center;gap:7px;width:max-content;margin:0 0 20px;padding:7px 10px;font-size:.72rem;font-weight:750;display:flex}.vibex-badge svg{color:var(--cyan)}.vibex-badge span{color:#ffffff4d}.eyebrow{color:#a78bfa;text-transform:uppercase;letter-spacing:.08em;align-items:center;gap:7px;margin:0 0 10px;font-size:.78rem;font-weight:800;display:flex}h1{letter-spacing:0;max-width:680px;margin:0;font-size:clamp(2.05rem,5vw,4rem);line-height:1.07}.intro{max-width:600px;color:var(--muted);margin:15px 0 0;font-size:1.02rem;line-height:1.75}.difficulty-control{min-width:305px}.control-label{color:var(--muted);margin-bottom:9px;font-size:.78rem;font-weight:700;display:block}.segmented{border:1px solid var(--line);background:#11152bb3;border-radius:8px;padding:4px;display:flex}.segmented button{min-height:40px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:5px;flex:1;padding:8px 12px;font-weight:700}.segmented button:hover{color:var(--ink)}.segmented button.active{color:#fff;background:linear-gradient(135deg, var(--violet-strong), var(--blue));box-shadow:0 5px 18px #3b82f633}.game-layout{grid-template-columns:220px minmax(0,1fr);align-items:start;gap:40px;display:grid}.stats-panel{border:1px solid var(--line);background:var(--surface);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-radius:8px;padding:19px;position:sticky;top:20px;box-shadow:0 20px 55px #0003}.progress-heading{color:var(--muted);justify-content:space-between;gap:8px;margin-bottom:10px;font-size:.78rem;display:flex}.progress-heading strong{color:var(--cyan)}.progress-track{background:#ffffff17;border-radius:4px;height:6px;overflow:hidden}.progress-track span{background:linear-gradient(90deg, var(--violet), var(--cyan));height:100%;transition:width .3s;display:block}.stats{border-block:1px solid var(--line);margin:22px 0;display:grid}.stat{border-bottom:1px solid var(--line);grid-template-columns:24px 1fr auto;align-items:center;gap:7px;min-height:56px;display:grid}.stat:last-child{border-bottom:0}.stat svg{color:#a78bfa}.stat span{color:var(--muted);font-size:.82rem}.stat strong{font-size:.95rem}.restart-button{background:#8b5cf60f;border:1px solid #a78bfa73;width:100%;min-height:42px;padding:9px}.restart-button:hover{border-color:var(--violet);background:#8b5cf62e}.board-wrap{min-width:0}.board-stage{border:1px solid var(--line);background:#0a0e1e85;border-radius:8px;padding:18px;position:relative;box-shadow:0 24px 70px #00000038}.game-grid{gap:12px;width:min(100%,760px);margin-inline:auto;display:grid}.grid-easy{grid-template-columns:repeat(4,1fr);max-width:630px}.grid-medium,.grid-hard{grid-template-columns:repeat(4,1fr)}.memory-card{aspect-ratio:4/3;perspective:800px;cursor:pointer;background:0 0;border:0;border-radius:8px;min-width:0;padding:0}.memory-card:disabled{cursor:default;opacity:1}.card-inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .46s cubic-bezier(.2,.7,.2,1);display:block;position:relative}.memory-card.is-visible .card-inner{transform:rotateY(180deg)}[dir=rtl] .memory-card.is-visible .card-inner{transform:rotateY(-180deg)}.card-front,.card-back{backface-visibility:hidden;border-radius:8px;place-items:center;display:grid;position:absolute;inset:0}.card-front{color:#ffffffa8;background-color:#181d3a;background-image:linear-gradient(135deg,#8b5cf624 25%,#0000 25%),linear-gradient(315deg,#38bdf817 25%,#0000 25%);background-size:20px 20px;border:1px solid #a78bfa59;overflow:hidden;box-shadow:0 5px #070914,0 12px 24px #00000047}.memory-card:hover .card-front{border-color:#67e8f994;transform:translateY(-2px);box-shadow:0 7px #070914,0 16px 28px #00000057}.mini-star{color:#c4b5fd;border:1px solid #67e8f961;border-radius:50%;place-items:center;width:38px;height:38px;font-size:1.25rem;display:grid;box-shadow:0 0 24px #8b5cf633}.card-back{background:#f8f9ff;border:2px solid #8b5cf68c;transform:rotateY(180deg);box-shadow:0 5px #818cf8,0 12px 24px #00000040}.card-back>span{color:#7042e8;font-size:clamp(1.8rem,5vw,3.1rem);line-height:1}.memory-card:nth-child(3n+2) .card-back>span{color:#087ea4}.memory-card:nth-child(3n) .card-back>span{color:#2563eb}.memory-card.is-matched .card-back{border-color:var(--success);background:#ecfdf5;animation:.35s matched-pop}.match-check{color:#fff;background:#059669;border-radius:50%;padding:3px;position:absolute;inset-block-start:8px;inset-inline-end:8px}.start-panel{z-index:3;-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);background:#070914b8;border-radius:7px;place-items:center;padding:20px;display:grid;position:absolute;inset:18px}.start-panel-content{text-align:center;background:#11152bf5;border:1px solid #a78bfa47;border-radius:8px;width:min(390px,100%);padding:26px;box-shadow:0 24px 60px #0000005c}.start-panel-content p{color:var(--muted);margin:14px auto 20px;line-height:1.7}.start-icon{color:#fff;background:linear-gradient(135deg, var(--violet), var(--blue));border-radius:50%;place-items:center;width:52px;height:52px;margin:auto;display:grid;box-shadow:0 0 32px #8b5cf65c}.start-button{color:#fff;background:linear-gradient(135deg, var(--violet-strong), var(--blue));border:1px solid #ffffff24;min-height:48px;padding:11px 24px;box-shadow:0 10px 26px #3b82f638}.start-button:hover{filter:brightness(1.1);transform:translateY(-1px)}.preview-countdown{z-index:4;color:#fff;pointer-events:none;background:#090c1bf0;border:1px solid #67e8f957;border-radius:8px;justify-items:center;min-width:190px;padding:14px 20px;display:grid;position:absolute;inset-block-start:50%;inset-inline-start:50%;transform:translate(50%,-50%);box-shadow:0 18px 44px #00000059}[dir=ltr] .preview-countdown{transform:translate(-50%,-50%)}.preview-countdown span{font-size:.82rem;font-weight:800}.preview-countdown strong{color:var(--cyan);margin:3px 0;font-size:2.25rem;line-height:1}.preview-countdown small{color:var(--muted);font-size:.7rem}.keyboard-hint{color:var(--muted);justify-content:center;align-items:center;gap:8px;margin:22px 0 0;font-size:.78rem;display:flex}.keyboard-hint span{border:1px solid var(--line);color:var(--ink);background:var(--surface-strong);border-bottom-width:2px;border-radius:4px;padding:2px 7px}.site-footer{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:24px;min-height:86px;margin-top:42px;padding-top:22px;display:flex}.footer-brand{align-items:center;gap:10px;display:flex}.footer-brand img{border-radius:8px;width:34px;height:34px}.footer-brand span{gap:2px;display:grid}.footer-brand strong{font-size:.8rem}.footer-brand small{color:var(--muted);font-size:.66rem}.game-links{color:var(--muted);align-items:center;gap:10px;font-size:.75rem;display:flex}.game-links>span{margin-inline-end:3px}.game-links a{border:1px solid var(--line);color:#dbeafe;background:#11152b7a;border-radius:6px;align-items:center;gap:6px;min-height:38px;padding:8px 10px;text-decoration:none;display:inline-flex}.game-links a:hover{color:#fff;border-color:#38bdf880}.dialog-backdrop{z-index:10;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#04050cc7;place-items:center;padding:20px;display:grid;position:fixed;inset:0}.success-dialog{text-align:center;background:#151a35;border:1px solid #a78bfa4d;border-radius:8px;width:min(440px,100%);padding:34px;animation:.28s dialog-in;box-shadow:0 28px 80px #0000007a}.success-dialog .eyebrow{justify-content:center;margin-top:18px}.trophy-mark{color:#fff;background:linear-gradient(135deg,#7c3aed,#2563eb);border-radius:50%;place-items:center;width:64px;height:64px;margin:auto;display:grid}.success-dialog h2{margin:4px 0 8px;font-size:1.65rem}.success-dialog>p:not(.eyebrow){color:var(--muted);margin:0 auto;line-height:1.6}.final-score{color:var(--cyan);margin:16px 0 10px;font-size:2.8rem;line-height:1;display:block}.result-meta{color:var(--muted);justify-content:center;gap:24px;margin-bottom:22px;font-size:.85rem;display:flex}.result-meta b{color:var(--ink)}.play-again{color:#fff;background:linear-gradient(135deg, var(--violet-strong), var(--blue));border:1px solid #0000;width:100%;min-height:46px;padding:11px 18px}.play-again:hover{filter:brightness(1.1)}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@keyframes ambient-drift{to{transform:translate(-24px,18px)scale(1.04)}}@keyframes light-sweep{to{opacity:.65;transform:translate(44px,24px)rotate(-14deg)}}@keyframes matched-pop{50%{transform:rotateY(180deg)scale(1.04)}}@keyframes dialog-in{0%{opacity:0;transform:translateY(12px)scale(.97)}}@media (width<=800px){.app-shell{width:min(100% - 28px,680px)}.hero{flex-direction:column;align-items:stretch;gap:24px;padding:34px 0 26px}.difficulty-control{min-width:0}.game-layout{grid-template-columns:1fr;gap:22px}.stats-panel{grid-template-columns:1fr auto;align-items:center;gap:16px 22px;padding:15px;display:grid;position:static}.progress-block{grid-column:1/-1}.stats{border:0;grid-template-columns:repeat(3,1fr);margin:0}.stat{border-bottom:0;border-inline-end:1px solid var(--line);grid-template-rows:auto auto;grid-template-columns:20px 1fr;min-width:90px;min-height:48px;padding-inline:10px}.stat:last-child{border-inline-end:0}.stat svg{grid-row:1/3}.stat strong{font-size:.88rem}.restart-button{white-space:nowrap;width:auto}}@media (width<=560px){.app-shell{width:min(100% - 20px,480px);padding-bottom:24px}.topbar{min-height:70px}.brand-mark{width:36px;height:36px}.brand-copy small{text-overflow:ellipsis;white-space:nowrap;max-width:120px;overflow:hidden}.language-button{min-width:44px;padding:8px 10px}h1{font-size:2.3rem}.hero{padding-top:28px}.vibex-badge{margin-bottom:16px;font-size:.67rem}.stats-panel{display:block}.stats{margin:14px 0}.stat{text-align:center;flex-direction:column;justify-content:center;gap:3px;padding:7px 4px;display:flex}.stat svg{width:17px;height:17px}.stat span{font-size:.7rem}.board-stage{padding:10px}.game-grid{gap:8px}.memory-card{aspect-ratio:3/4}.start-panel{padding:10px;inset:10px}.start-panel-content{padding:20px 14px}.start-panel-content p{margin-block:10px 15px;font-size:.86rem}.start-icon{width:46px;height:46px}.card-front{box-shadow:0 3px #070914,0 8px 14px #0000003d}.mini-star{width:30px;height:30px;font-size:.95rem}.keyboard-hint{text-align:center;line-height:1.5}.site-footer{flex-direction:column;align-items:flex-start;gap:18px;margin-top:30px}.game-links{grid-template-columns:1fr 1fr;width:100%;display:grid}.game-links>span{grid-column:1/-1}.game-links a{justify-content:center;min-width:0}.success-dialog{padding:28px 22px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}