:root{--bg-deep: #05080f;--bg-panel: #0a1020;--cyan: #00f0ff;--magenta: #ff2d95;--lime: #39ff14;--amber: #ffb800;--text: #e8f4ff;--text-dim: #7a8ba3;--grid-line: rgba(0, 240, 255, .08);--board-cell: #0d1528;--board-border: rgba(0, 240, 255, .35);--glow-cyan: 0 0 12px rgba(0, 240, 255, .55), 0 0 32px rgba(0, 240, 255, .25);--glow-magenta: 0 0 12px rgba(255, 45, 149, .55), 0 0 32px rgba(255, 45, 149, .25);--font-display: "Orbitron", sans-serif;--font-mono: "Share Tech Mono", monospace;--ease-out: cubic-bezier(.22, 1, .36, 1);--ease-soft: cubic-bezier(.33, 1, .68, 1);--ease-spring: cubic-bezier(.34, 1.45, .64, 1);--ease-flip: cubic-bezier(.45, .05, .25, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{min-height:100%}body{font-family:var(--font-mono);color:var(--text);background:var(--bg-deep);overflow-x:hidden;line-height:1.4}.scanlines{pointer-events:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,0,0,.12) 2px,rgba(0,0,0,.12) 4px);animation:scan-drift 8s linear infinite}@keyframes scan-drift{0%{background-position:0 0}to{background-position:0 100px}}.grid-bg{pointer-events:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;background-image:linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px),radial-gradient(ellipse 80% 60% at 50% 0%,rgba(0,240,255,.12),transparent 55%),radial-gradient(ellipse 50% 40% at 80% 90%,rgba(255,45,149,.1),transparent 50%),radial-gradient(ellipse 40% 30% at 10% 70%,rgba(57,255,20,.06),transparent 50%);background-size:48px 48px,48px 48px,100% 100%,100% 100%,100% 100%;animation:grid-pulse 6s ease-in-out infinite alternate}@keyframes grid-pulse{0%{opacity:.7}to{opacity:1}}.noise{pointer-events:none;position:fixed;top:0;right:0;bottom:0;left:0;z-index:99;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");animation:noise-flicker .15s steps(2) infinite}@keyframes noise-flicker{0%,to{transform:translate(0)}50%{transform:translate(-1%,1%)}}#app{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:1.5rem 1rem 3rem;gap:1.25rem}.brand-block{text-align:center;animation:brand-in .9s var(--ease-out) both}@keyframes brand-in{0%{opacity:0;transform:translateY(-24px) skew(-4deg);filter:blur(8px)}to{opacity:1;transform:none;filter:none}}.brand{font-family:var(--font-display);font-weight:800;font-size:clamp(2.4rem,8vw,4rem);letter-spacing:.18em;text-transform:uppercase;background:linear-gradient(110deg,var(--cyan) 0%,var(--text) 40%,var(--magenta) 70%,var(--lime) 100%);background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:brand-shimmer 5s linear infinite;text-shadow:none;filter:drop-shadow(0 0 20px rgba(0,240,255,.4))}@keyframes brand-shimmer{to{background-position:200% center}}.brand-sub{margin-top:.35rem;font-size:.75rem;letter-spacing:.35em;text-transform:uppercase;color:var(--text-dim);animation:blink-cursor 1.2s step-end infinite}.brand-sub:after{content:"_";color:var(--cyan);margin-left:2px}@keyframes blink-cursor{50%{opacity:.4}}.hud{width:min(100%,560px);display:grid;grid-template-columns:1fr 1fr;gap:.75rem;animation:hud-in .7s .15s var(--ease-out) both}@keyframes hud-in{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}.score-panel{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:linear-gradient(135deg,#0a1020e6,#05080ff2);border:1px solid var(--board-border);clip-path:polygon(0 0,calc(100% - 12px) 0,100% 12px,100% 100%,12px 100%,0 calc(100% - 12px));transition:border-color .45s var(--ease-soft),box-shadow .45s var(--ease-soft),filter .45s var(--ease-soft)}.score-panel.active{animation:panel-glow 1.5s ease-in-out infinite}.score-panel.black.active{border-color:var(--magenta);box-shadow:var(--glow-magenta)}.score-panel.white.active{border-color:var(--cyan);box-shadow:var(--glow-cyan)}@keyframes panel-glow{0%,to{filter:brightness(1)}50%{filter:brightness(1.15)}}.score-disc{width:28px;height:28px;border-radius:50%;flex-shrink:0;animation:disc-idle 3s ease-in-out infinite}.score-disc.black{background:radial-gradient(circle at 35% 30%,#ff6bb5,var(--magenta) 45%,#8a0048);box-shadow:var(--glow-magenta)}.score-disc.white{background:radial-gradient(circle at 35% 30%,#a8ffff,var(--cyan) 45%,#007a85);box-shadow:var(--glow-cyan)}@keyframes disc-idle{0%,to{transform:scale(1)}50%{transform:scale(1.08)}}.score-meta{display:flex;flex-direction:column;gap:.1rem}.score-label{font-family:var(--font-display);font-size:.65rem;letter-spacing:.15em;color:var(--text-dim);text-transform:uppercase}.score-value{font-family:var(--font-display);font-size:1.5rem;font-weight:700;font-variant-numeric:tabular-nums;transition:transform .35s var(--ease-spring),color .3s}.score-value.bump{animation:score-bump .45s var(--ease-spring)}@keyframes score-bump{0%{transform:scale(1)}40%{transform:scale(1.35);color:var(--lime)}to{transform:scale(1)}}.controls{width:min(100%,560px);display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;animation:hud-in .7s .25s var(--ease-out) both}.ctrl{font-family:var(--font-display);font-size:.65rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;padding:.65rem 1rem;color:var(--text);background:transparent;border:1px solid var(--board-border);cursor:pointer;position:relative;overflow:hidden;transition:color .2s,border-color .2s,box-shadow .2s,transform .2s}.ctrl:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,transparent,rgba(0,240,255,.15),transparent);transform:translate(-100%);transition:transform .5s}.ctrl:hover:before{transform:translate(100%)}.ctrl:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:var(--glow-cyan);transform:translateY(-1px)}.ctrl:active{transform:translateY(1px) scale(.98)}.ctrl.primary{border-color:var(--magenta);color:var(--magenta)}.ctrl.primary:hover{border-color:var(--magenta);color:var(--text);background:#ff2d9526;box-shadow:var(--glow-magenta)}.ctrl.active-diff{border-color:var(--lime);color:var(--lime);box-shadow:0 0 10px #39ff1466}.controls.modes{gap:.4rem}.ctrl.active-mode{border-color:var(--cyan);color:var(--cyan);box-shadow:var(--glow-cyan);background:#00f0ff14}select.ctrl{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--bg-panel);padding-right:1.5rem;background-image:linear-gradient(45deg,transparent 50%,var(--cyan) 50%),linear-gradient(135deg,var(--cyan) 50%,transparent 50%);background-position:calc(100% - 14px) 50%,calc(100% - 9px) 50%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}.status-bar{width:min(100%,560px);min-height:1.5rem;text-align:center;font-size:.8rem;letter-spacing:.12em;color:var(--cyan);text-transform:uppercase;transition:color .35s var(--ease-soft),opacity .35s var(--ease-soft)}.status-bar.enter{animation:status-fade .45s var(--ease-soft) both}@keyframes status-fade{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.status-bar.ai-thinking{animation:thinking-pulse 1.1s ease-in-out infinite}@keyframes thinking-pulse{0%,to{opacity:.5;color:var(--amber)}50%{opacity:1;color:var(--lime)}}.status-bar.game-over{color:var(--lime);font-family:var(--font-display);font-weight:700;letter-spacing:.2em;animation:win-flash .6s var(--ease-spring) 3}@keyframes win-flash{0%,to{transform:scale(1);filter:brightness(1)}50%{transform:scale(1.08);filter:brightness(1.4)}}.board-wrap{position:relative;padding:10px;background:linear-gradient(145deg,#00f0ff26,#ff2d951a);clip-path:polygon(0 14px,14px 0,calc(100% - 14px) 0,100% 14px,100% calc(100% - 14px),calc(100% - 14px) 100%,14px 100%,0 calc(100% - 14px));animation:board-in .85s .2s var(--ease-out) both}@keyframes board-in{0%{opacity:0;transform:scale(.92) rotateX(8deg);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}.board-wrap:before{content:"";position:absolute;top:-2px;right:-2px;bottom:-2px;left:-2px;background:linear-gradient(90deg,var(--cyan),var(--magenta),var(--lime),var(--cyan));background-size:300% 100%;z-index:-1;animation:border-flow 4s linear infinite;clip-path:inherit;opacity:.7}@keyframes border-flow{to{background-position:300% 0}}.board{display:grid;grid-template-columns:repeat(8,1fr);gap:3px;width:min(92vw,480px);aspect-ratio:1;background:#050a14;padding:4px;border:1px solid rgba(0,240,255,.2)}.cell{position:relative;background:var(--board-cell);border:1px solid rgba(0,240,255,.06);cursor:default;display:flex;align-items:center;justify-content:center;transition:background .4s var(--ease-soft),box-shadow .4s var(--ease-soft),border-color .4s var(--ease-soft)}.board.booting .cell{animation:cell-boot .55s var(--ease-soft) both;animation-delay:calc(var(--i, 0) * 10ms)}@keyframes cell-boot{0%{opacity:0;transform:scale(.72)}to{opacity:1;transform:scale(1)}}.cell.valid{cursor:pointer;background:#00f0ff0f}.cell.valid:after{content:"";position:absolute;width:28%;height:28%;border-radius:50%;border:2px solid var(--lime);box-shadow:0 0 8px #39ff1480;opacity:.7;animation:hint-pulse 1.6s var(--ease-soft) infinite}@keyframes hint-pulse{0%,to{transform:scale(1);opacity:.45}50%{transform:scale(1.2);opacity:1}}.cell.valid:hover{background:#39ff141f;box-shadow:inset 0 0 20px #39ff1433}.cell.valid:hover:after{opacity:1;background:#39ff1459}.cell.ai-target{background:#ffb80024;box-shadow:inset 0 0 22px #ffb80047;border-color:#ffb8008c;animation:ai-target-pulse .45s var(--ease-soft) infinite}.cell.ai-target:after{content:"";position:absolute;width:36%;height:36%;border-radius:50%;border:2px solid var(--amber);box-shadow:0 0 12px #ffb800a6;opacity:.9}@keyframes ai-target-pulse{0%,to{filter:brightness(1)}50%{filter:brightness(1.25)}}.cell.locked{pointer-events:none}.disc{width:78%;height:78%;border-radius:50%;transform-style:preserve-3d;backface-visibility:hidden;will-change:transform,filter,opacity;transition:box-shadow .45s var(--ease-soft),filter .45s var(--ease-soft)}.disc.black{background:radial-gradient(circle at 32% 28%,#ff8ec8,var(--magenta) 42%,#5c0030 75%,#1a0010);box-shadow:inset -3px -3px 8px #00000080,inset 2px 2px 6px #ff96c859,0 0 14px #ff2d9573}.disc.white{background:radial-gradient(circle at 32% 28%,#d4ffff,var(--cyan) 42%,#005560 75%,#002028);box-shadow:inset -3px -3px 8px #00000059,inset 2px 2px 6px #b4ffff66,0 0 14px #00f0ff73}.disc.place{animation:disc-place .42s var(--ease-spring) both}@keyframes disc-place{0%{transform:scale(.15) rotateY(120deg);opacity:0;filter:blur(2px)}55%{transform:scale(1.12) rotateY(8deg);opacity:1;filter:none}to{transform:scale(1) rotateY(0)}}.disc.flip{animation:disc-flip .42s var(--ease-flip) both}@keyframes disc-flip{0%{transform:rotateY(0) scale(1);filter:brightness(1)}40%{transform:rotateY(88deg) scale(1.08);filter:brightness(1.55)}to{transform:rotateY(180deg) scale(1);filter:brightness(1)}}.disc.ai-place{animation:ai-slam .38s var(--ease-spring) both}@keyframes ai-slam{0%{transform:translateY(-28px) scale(.35);opacity:0;filter:blur(4px)}58%{transform:translateY(3px) scale(1.1);opacity:1;filter:none}78%{transform:translateY(-2px) scale(.98)}to{transform:translateY(0) scale(1)}}.board.aivai-pace .disc.ai-place{animation-duration:.28s}.board.aivai-pace .disc.flip{animation-duration:.34s}.board.aivai-pace .cell.ai-target{animation-duration:.32s}.cell.ripple:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:2px;border:2px solid var(--lime);animation:ripple-out .55s var(--ease-soft) forwards;pointer-events:none}@keyframes ripple-out{0%{transform:scale(.35);opacity:.95}to{transform:scale(1.45);opacity:0}}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;align-items:center;justify-content:center;background:#05080fbf;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:overlay-in .4s var(--ease-out) both}@keyframes overlay-in{0%{opacity:0}to{opacity:1}}.overlay.hidden{display:none}.overlay-card{text-align:center;padding:2rem 2.5rem;max-width:90vw;background:linear-gradient(160deg,#0a1020fa,#05080ffa);border:1px solid var(--cyan);box-shadow:var(--glow-cyan),0 0 60px #ff2d9533;clip-path:polygon(0 16px,16px 0,calc(100% - 16px) 0,100% 16px,100% calc(100% - 16px),calc(100% - 16px) 100%,16px 100%,0 calc(100% - 16px));animation:card-slam .55s var(--ease-spring) both}@keyframes card-slam{0%{transform:scale(.7) translateY(40px);opacity:0}to{transform:none;opacity:1}}.overlay-title{font-family:var(--font-display);font-size:1.6rem;font-weight:800;letter-spacing:.2em;text-transform:uppercase;color:var(--lime);margin-bottom:.75rem;text-shadow:0 0 20px rgba(57,255,20,.5)}.overlay-body{color:var(--text-dim);margin-bottom:1.5rem;letter-spacing:.08em}.overlay-card .ctrl{margin:0 .25rem}.tip{font-size:.7rem;color:var(--text-dim);letter-spacing:.1em;text-align:center;max-width:480px;animation:hud-in .7s .4s var(--ease-out) both}@media(max-width:480px){.hud{grid-template-columns:1fr}.brand{letter-spacing:.1em}.controls{gap:.35rem}.ctrl{padding:.55rem .75rem;font-size:.58rem}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}