:root{--bg:#05080d;--panel:#0b1220e6;--panel2:#07111c;--line:#1f3a52;--line2:#214b66;--txt:#d7f7ff;--muted:#7fa3b6;--green:#00d084;--yellow:#ffcc33;--gray:#263341;--cyan:#00e5ff;--pink:#ff3df2;--red:#ff5570;--tile:44px}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--txt);font-family:"JetBrains Mono","Fira Code",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow-x:hidden}.bg{position:fixed;inset:0;z-index:-1;background:linear-gradient(90deg,#061a2d 0,#05080d 45%,#12051d 100%)}.bg:before{content:"";position:absolute;inset:0;background:linear-gradient(#00e5ff12 1px,transparent 1px),linear-gradient(90deg,#00e5ff0d 1px,transparent 1px);background-size:34px 34px;mask-image:radial-gradient(circle at 50% 0%,#000 0 52%,transparent 82%)}.bg:after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(180deg,transparent 0 7px,#ffffff07 8px);pointer-events:none}header{height:64px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid #00e5ff26;background:#03070ccc;backdrop-filter:blur(10px);position:sticky;top:0;z-index:2;box-shadow:0 0 30px #00e5ff14}h1{letter-spacing:.16em;margin:0;color:#eaffff;text-shadow:0 0 12px #00e5ff,0 0 30px #00e5ff44;font-size:1.55rem}.back{position:absolute;left:16px;color:var(--cyan);text-decoration:none;font-size:.9rem}.back:before{content:"["}.back:after{content:"]"}#helpBtn{position:absolute;right:16px;border:1px solid var(--cyan);background:#07111c;color:var(--cyan);border-radius:8px;width:34px;height:34px;font-weight:900;box-shadow:0 0 14px #00e5ff22}.hero{max-width:980px;margin:20px auto 0;padding:0 14px;text-align:center}.kicker,.mode-desc{color:var(--muted);text-shadow:0 0 12px #00e5ff22}.modes{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.modes button{border:1px solid var(--line2);background:linear-gradient(180deg,#0d1927,#070d15);color:var(--txt);border-radius:10px;padding:10px 15px;font-weight:900;cursor:pointer;box-shadow:inset 0 0 0 1px #ffffff08,0 0 18px #0008}.modes button.active{border-color:var(--cyan);box-shadow:0 0 22px #00e5ff44,inset 0 0 18px #00e5ff14;color:white}main{max-width:1280px;margin:0 auto;padding:10px 14px 40px}.boards{display:grid;grid-template-columns:repeat(auto-fit,minmax(max-content,max-content));gap:16px;align-items:start;justify-content:center}.board{width:max-content;max-width:none;padding:11px;border:1px solid #00e5ff20;background:linear-gradient(180deg,#0b1220eb,#070b12eb);border-radius:14px;box-shadow:0 20px 50px #0008,0 0 28px #00e5ff10}.board.active{border-color:#00e5ff88;box-shadow:0 20px 50px #0008,0 0 28px #00e5ff33}.board.locked{opacity:.55}.board h3{margin:0 0 8px;color:#bdf8ff;font-size:.82rem;text-shadow:0 0 10px #00e5ff55}.grid{display:grid;gap:6px}.row{display:grid;gap:6px}.tile{width:var(--tile);height:var(--tile);border:2px solid var(--line);display:grid;place-items:center;font-size:1.28rem;font-weight:950;text-transform:uppercase;background:#070b12;box-shadow:inset 0 0 14px #000,0 0 0 1px #ffffff06;transform-style:preserve-3d}.tile.filled{border-color:#4a7893;box-shadow:inset 0 0 16px #00e5ff12}.tile.correct{background:linear-gradient(180deg,#00b875,#007c55);border-color:var(--green);color:#ecfff7}.tile.present{background:linear-gradient(180deg,#d0a600,#8f7100);border-color:var(--yellow);color:#fff9dc}.tile.absent{background:#1d2834;border-color:#34495c;color:#aab9c6}.tile.reveal{animation:flip .45s ease both}@keyframes flip{50%{transform:rotateX(90deg)}100%{transform:rotateX(0)}}.keyboard{margin:22px auto;max-width:720px;display:grid;gap:8px}.keyrow{display:flex;gap:7px;justify-content:center}.key{height:50px;min-width:36px;padding:0 11px;border:1px solid #2d4053;border-radius:8px;background:linear-gradient(180deg,#6f7b8c,#566171);color:white;font-weight:950;cursor:pointer;box-shadow:0 4px 0 #252d38}.key.wide{min-width:72px}.key.correct{background:var(--green)}.key.present{background:var(--yellow);color:#171200}.key.absent{background:var(--gray)}.result,.scorebox{border:1px solid #00e5ff24;background:linear-gradient(180deg,#0b1220eb,#080d15eb);border-radius:14px;padding:16px;margin:16px auto;max-width:720px;box-shadow:0 0 30px #00e5ff10}.hidden{display:none}#scoreForm{display:flex;gap:8px;flex-wrap:wrap}input{flex:1;min-width:220px;border:1px solid var(--line2);border-radius:8px;background:#050a10;color:var(--txt);padding:12px;font-family:inherit}button{font-family:inherit;cursor:pointer}#scoreForm button{border:1px solid var(--cyan);border-radius:8px;background:#061e2d;color:var(--cyan);font-weight:950;padding:12px 16px;box-shadow:0 0 18px #00e5ff22}.scorebox ol{margin:0;padding-left:26px;max-height:360px;overflow:auto}.scorebox li{padding:6px 0;color:#d8f9ff}.green{color:#78e39e}.yellow{color:#f3d967}.gray{color:#aab1bd}dialog{max-width:520px;border:1px solid #00e5ff44;border-radius:14px;background:#07111c;color:var(--txt);padding:24px;box-shadow:0 30px 80px #000,0 0 30px #00e5ff22}dialog::backdrop{background:#000b}.x{float:right;background:transparent;border:0;color:white;font-size:28px}@media(max-width:760px){:root{--tile:38px}.boards{justify-content:start;overflow-x:auto;padding-bottom:8px}.back{position:static;margin-right:auto;margin-left:10px}header{justify-content:space-between}h1{font-size:1.05rem}.key{min-width:29px;padding:0 8px}.key.wide{min-width:58px}}@media(max-width:430px){:root{--tile:34px}.board{padding:8px}.grid,.row{gap:4px}}
/* UX polish: clearer panels, focus states, safer mobile rhythm */
.hero{border:1px solid #00e5ff1f;background:#06111bb8;border-radius:18px;padding:16px 18px;margin-top:18px;box-shadow:0 0 28px #00e5ff0f}.mode-desc{max-width:720px;margin:.75rem auto 0}.board{position:relative}.board:before{content:"";position:absolute;inset:0;border-radius:14px;pointer-events:none;background:linear-gradient(135deg,#ffffff10,transparent 38%)}.tile{border-radius:7px;transition:transform .08s ease,border-color .12s ease}.tile.filled{transform:translateY(-1px)}.key:focus-visible,button:focus-visible,input:focus-visible,.back:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}.result h2,.scorebox h2{margin-top:0;color:#eaffff}.scorebox li:nth-child(1){color:#ffd166;font-weight:900}.scorebox li:nth-child(2){color:#d7e6f2}.scorebox li:nth-child(3){color:#d79d6b}@media(max-width:760px){.hero{margin:10px 10px 0}.keyboard{position:sticky;bottom:0;background:#05080df2;padding:10px 0;border-top:1px solid #00e5ff24}.scorebox,.result{margin-left:10px;margin-right:10px}}