*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--red: #f40c3f;--dark: #0a0005;--dark2: #180010;--light: #fff0eb;--mono: "Space Mono", monospace;--sans: "Space Grotesk", sans-serif}body{background:var(--dark);color:var(--light);font-family:var(--sans);min-height:100vh;display:flex;flex-direction:column;align-items:center;overflow-x:hidden;touch-action:manipulation}.hdr{width:100%;display:flex;align-items:center;justify-content:space-between;padding:.85rem 1.5rem;border-bottom:1px solid rgba(244,12,63,.2);position:sticky;top:0;z-index:50;background:#0a0005e6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.hdr-back{display:flex;align-items:center;gap:.4rem;color:var(--light);text-decoration:none;font:700 10px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;opacity:.6;transition:opacity .2s}.hdr-back:hover{opacity:1}.hdr-title{font:700 13px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;color:var(--red)}.hdr-stats{display:flex;gap:1.5rem;align-items:center}.hdr-stat{font:700 11px/1 var(--mono);letter-spacing:.05em}.stat-l{opacity:.4;font-size:9px;letter-spacing:.15em;margin-right:.35rem}.game-area{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1.5rem 1rem;width:100%;max-width:700px;gap:1.5rem}.diff-bar{display:flex;gap:.5rem;align-items:center}.diff-btn{padding:.4rem .9rem;border:1px solid rgba(244,12,63,.3);background:transparent;color:var(--light);font:700 9px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;cursor:pointer;opacity:.5;transition:all .2s}.diff-btn:hover{opacity:.8;border-color:var(--red)}.diff-btn.active{background:var(--red);color:var(--light);border-color:var(--red);opacity:1}.timer-bar-wrap{width:100%;height:3px;background:#f40c3f1a;border-radius:2px;overflow:hidden}.timer-bar{height:100%;background:var(--red);width:100%;transition:width 1s linear,background .5s}.card-grid{display:grid;gap:.6rem;width:100%}.card-grid.g4{grid-template-columns:repeat(4,1fr)}.card-grid.g6{grid-template-columns:repeat(6,1fr)}.card{aspect-ratio:1;position:relative;cursor:pointer;perspective:600px;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;-moz-user-select:none;user-select:none}.card-inner{position:absolute;inset:0;transform-style:preserve-3d;transition:transform .45s cubic-bezier(.4,0,.2,1);border-radius:6px}.card.flipped .card-inner,.card.matched .card-inner{transform:rotateY(180deg)}.card-face{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;border-radius:6px;backface-visibility:hidden;-webkit-backface-visibility:hidden}.card-back{background:var(--red);border:1px solid rgba(255,255,255,.1)}.card-back:before{content:"?";font:700 1.5rem/1 var(--mono);color:#0a000566}@media (max-width: 400px){.card-back:before{font-size:1.1rem}}.card-front{background:var(--dark2);border:1px solid rgba(244,12,63,.25);transform:rotateY(180deg);font-size:clamp(1.4rem,5vw,2.2rem);transition:border-color .3s}.card.matched .card-front{border-color:var(--red);background:#f40c3f14;box-shadow:0 0 16px #f40c3f40}.card:not(.flipped):not(.matched):hover .card-inner{transform:rotateY(12deg)}.screen-overlay{position:fixed;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#0a0005f0;z-index:100;gap:1rem;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.screen-overlay.hidden{display:none}.sc-label{font:700 10px/1 var(--mono);letter-spacing:.3em;color:var(--red);text-transform:uppercase}.sc-title{font:700 clamp(2.5rem,8vw,5rem)/1 var(--mono);text-transform:uppercase;color:var(--light);letter-spacing:-.02em;text-align:center}.sc-sub{font:300 .85rem/1.6 var(--sans);color:var(--light);opacity:.45;text-align:center;max-width:300px}.sc-stats{display:flex;gap:2.5rem;margin:.5rem 0}.sc-stat{display:flex;flex-direction:column;align-items:center;gap:.3rem}.sc-stat-label{font:400 9px/1 var(--mono);letter-spacing:.15em;color:var(--light);opacity:.4;text-transform:uppercase}.sc-stat-val{font:700 2rem/1 var(--mono);color:var(--light)}.sc-stat-val.accent{color:var(--red)}.btn{display:inline-flex;align-items:center;padding:.85rem 2rem;border:1px solid var(--red);background:transparent;color:var(--red);font:700 11px/1 var(--mono);letter-spacing:.18em;text-transform:uppercase;cursor:pointer;transition:background .2s,color .2s}.btn:hover{background:var(--red);color:var(--light)}.confetti{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:95}.confetti-bit{position:absolute;width:8px;height:8px;opacity:0;animation:confetti-fall 1.5s ease forwards}@keyframes confetti-fall{0%{transform:translateY(-20px) rotate(0);opacity:1}to{transform:translateY(100vh) rotate(720deg);opacity:0}}.scanlines{position:fixed;inset:0;pointer-events:none;z-index:1000;background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.03) 2px,rgba(0,0,0,.03) 4px)}