:root{--acid:#c8ff2e;--violet:#c9abff}.game-shell{position:relative;min-height:100vh;padding:clamp(5rem,9vw,9rem) 4vw;background:radial-gradient(circle at 78% 12%,rgba(201,171,255,.19),transparent 28%),linear-gradient(135deg,#070809,#0c1110 58%,#050506);overflow:hidden}.game-scanlines{position:absolute;inset:0;pointer-events:none;opacity:.16;background:repeating-linear-gradient(0deg,transparent 0 3px,rgba(200,255,46,.18) 4px)}.game-intro{position:relative;max-width:1400px;margin:0 auto 3rem}.game-kicker,.game-status,.game-controls{font:700 .7rem/1 Arial,sans-serif;letter-spacing:.16em;text-transform:uppercase}.game-kicker{color:var(--acid)}.game-intro h1{font:400 clamp(5rem,14vw,13rem)/.67 Georgia,serif;letter-spacing:-.08em;margin:.2em 0;color:#f3f0e8;text-shadow:5px 0 0 rgba(201,171,255,.3)}.game-intro h1 em{color:var(--violet);font-weight:400}.game-intro>p:last-child{max-width:500px;color:#9ba39e;font-size:1.1rem}.game-console{position:relative;width:min(1400px,100%);margin:auto;padding:clamp(1rem,2.4vw,2.4rem);border:1px solid #354038;background:rgba(5,8,7,.88);box-shadow:0 0 0 8px #080a09,0 0 45px rgba(200,255,46,.08)}.game-status{display:flex;justify-content:space-between;gap:1rem;margin-bottom:1.5rem;color:#738078}.game-status b{display:block;margin-top:.5rem;color:var(--acid);font:400 clamp(1.4rem,3vw,2.4rem)/1 'Courier New',monospace;letter-spacing:0}.memory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(.45rem,1vw,1rem)}.memory-card{aspect-ratio:4/3;padding:0;border:0;background:transparent;perspective:900px;cursor:pointer}.memory-card-inner{position:relative;display:block;width:100%;height:100%;transition:transform .52s cubic-bezier(.2,.8,.2,1);transform-style:preserve-3d}.memory-card.is-flipped .memory-card-inner,.memory-card.is-matched .memory-card-inner{transform:rotateY(180deg)}.memory-card-back,.memory-card-front{position:absolute;inset:0;display:flex;backface-visibility:hidden;border:1px solid #3b493e;overflow:hidden}.memory-card-back{align-items:center;justify-content:center;background:repeating-linear-gradient(135deg,#111713 0 10px,#0b100c 10px 20px);color:var(--acid)}.memory-card-back:after{content:'';position:absolute;inset:10px;border:1px solid rgba(200,255,46,.25)}.memory-card-back i{font:900 clamp(.85rem,2vw,1.5rem) Arial,sans-serif;letter-spacing:.18em;font-style:normal}.memory-card-back b{position:absolute;right:.8rem;bottom:.55rem;font:400 .7rem 'Courier New',monospace}.memory-card-front{transform:rotateY(180deg);background:#111}.memory-card-front img{width:100%;height:100%;object-fit:cover}.memory-card.is-matched .memory-card-front{box-shadow:inset 0 0 0 3px var(--acid)}.memory-card:focus-visible{outline:2px solid var(--violet);outline-offset:3px}.game-controls{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-top:1.5rem}.game-controls button,.game-complete button{padding:1rem 1.2rem;border:1px solid var(--acid);background:transparent;color:var(--acid);font:700 .7rem Arial,sans-serif;letter-spacing:.13em;text-transform:uppercase;cursor:pointer}.game-controls a{color:#7f8b83;text-decoration:none}.game-complete{width:min(650px,90vw);padding:clamp(2rem,6vw,5rem);border:1px solid var(--acid);background:#080b09;color:#f5f2ec;text-align:center;box-shadow:0 0 70px rgba(200,255,46,.18)}.game-complete::backdrop{background:rgba(0,0,0,.88);backdrop-filter:blur(9px)}.game-complete>p:first-child{color:var(--acid);text-transform:uppercase;letter-spacing:.16em;font-size:.7rem}.game-complete h2{font:400 clamp(3.4rem,9vw,7rem)/.76 Georgia,serif;letter-spacing:-.065em;margin:.3em 0;color:var(--violet)}.game-error{grid-column:1/-1;padding:4rem;text-align:center;color:#aaa}@media(max-width:800px){.game-shell{padding:6rem 3vw}.game-intro h1{font-size:clamp(4.6rem,25vw,8rem)}.memory-grid{gap:.35rem}.memory-card{aspect-ratio:3/4}.memory-card-back i{writing-mode:vertical-rl;font-size:.65rem}.game-console{padding:.65rem}.game-status{padding:.5rem}.game-status b{font-size:1.15rem}.game-controls{align-items:stretch;flex-direction:column}.game-controls a{text-align:center;padding:.8rem}}