.brain-twist{--bt-wood-1:#d9a86a;--bt-wood-2:#b8824a;--bt-wood-3:#8c5a2e;--bt-paper:#fffdf5;--bt-paper-line:#cfe6f5;--bt-paper-margin:#f4a8a8;--bt-ink:#2b2b2b;--bt-yellow:#ffd84d;--bt-yellow-d:#e8b800;--bt-green:#8bd96a;--bt-green-d:#5eaf3c;--bt-purple:#c79bf0;--bt-orange:#ff9a4d;--bt-red:#ef5b5b;--bt-blue:#5ec5e8;width:100%;height:min(900px,100vh - 4rem);font-family:var(--font-fredoka), system-ui, sans-serif;color:var(--bt-ink);-webkit-user-select:none;user-select:none;touch-action:manipulation;background:repeating-linear-gradient(92deg, #0000000a 0 2px, transparent 2px 9px), repeating-linear-gradient(88deg, #ffffff0d 0 1px, transparent 1px 14px), linear-gradient(135deg, var(--bt-wood-1), var(--bt-wood-2) 60%, var(--bt-wood-3));border-radius:12px;position:relative;overflow:hidden}.brain-twist *,.brain-twist :before,.brain-twist :after{box-sizing:border-box;-webkit-tap-highlight-color:transparent}.brain-twist .topbar{z-index:10;justify-content:space-between;align-items:center;padding:14px 18px;display:flex;position:absolute;top:0;left:0;right:0}.brain-twist .top-left,.brain-twist .top-right{align-items:center;gap:10px;display:flex}.brain-twist .icon-btn{background:var(--bt-yellow);cursor:pointer;color:#5a4400;border:3px solid #b89200;border-radius:50%;justify-content:center;align-items:center;width:46px;height:46px;font-size:20px;transition:transform .1s;display:flex;box-shadow:0 3px #8a6c00,inset 0 -4px #0000001f}.brain-twist .icon-btn:active{transform:translateY(2px);box-shadow:0 1px #8a6c00}.brain-twist .level-title{font-family:var(--font-patrick-hand), cursive;color:#fffbe6;text-shadow:2px 2px #6b3d12,0 0 10px #0003;letter-spacing:1px;text-align:center;font-size:30px}.brain-twist .level-title .sub{letter-spacing:2px;opacity:.85;font-size:16px;display:block}.brain-twist .hint-counter{color:#5a4400;background:#fffceb;border:3px solid #b89200;border-radius:30px;justify-content:flex-end;align-items:center;gap:8px;min-width:78px;padding:4px 14px 4px 18px;font-size:20px;font-weight:700;display:flex;box-shadow:0 3px #8a6c00}.brain-twist .bulb{background:radial-gradient(circle at 35% 30%,#fffba6,#ffd84d 60%,#e8b800);border:2px solid #b89200;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;font-size:18px;display:flex}.brain-twist .stage{grid-template-columns:1fr 1fr;align-items:center;gap:18px;padding:74px 24px 130px;display:grid;position:absolute;inset:0}.brain-twist .paper-wrap{aspect-ratio:1.05;justify-self:center;width:min(92%,440px);position:relative}.brain-twist .paper-stack{background:#fdfaee;border-radius:6px;position:absolute;inset:0;transform:rotate(-1.5deg)translate(8px,8px);box-shadow:0 6px 18px #0000002e}.brain-twist .paper-stack.b{background:#f6f1de;transform:rotate(1.2deg)translate(-6px,4px)}.brain-twist .paper{background:linear-gradient(to right, transparent 38px, var(--bt-paper-margin) 38px, var(--bt-paper-margin) 39px, transparent 39px), repeating-linear-gradient(transparent 0 35px, var(--bt-paper-line) 35px 36px);background-color:var(--bt-paper);border-radius:6px;width:100%;height:100%;position:relative;overflow:hidden;transform:rotate(-.4deg);box-shadow:0 8px 24px #00000040,inset 0 0 0 1px #0000000a}.brain-twist .spiral{pointer-events:none;justify-content:space-around;height:30px;padding:0 14px;display:flex;position:absolute;top:-14px;left:0;right:0}.brain-twist .hole{background:radial-gradient(circle at 40% 35%,#fff,#d8c89c 70%,#9c7e3d);border-radius:50%;width:22px;height:22px;box-shadow:inset 0 -2px 3px #00000040}.brain-twist .puzzle-area{flex-direction:column;justify-content:space-between;align-items:center;padding:6px 4px 16px;display:flex;position:absolute;inset:60px 24px 24px 50px}.brain-twist .clue{width:100%;font-family:var(--font-patrick-hand), cursive;color:#1d1d1d;text-align:center;flex-wrap:wrap;flex:1;justify-content:center;align-items:center;gap:14px;display:flex}.brain-twist .clue .word{letter-spacing:1px;font-size:48px;line-height:1}.brain-twist .clue .small{font-size:26px;line-height:1.15}.brain-twist .clue .tiny{color:#555;font-size:18px;font-family:var(--font-fredoka), sans-serif;font-weight:500}.brain-twist .clue .emoji{font-size:64px;line-height:1}.brain-twist .clue .stack{flex-direction:column;align-items:center;gap:8px;display:flex}.brain-twist .clue .strike{color:#a33;text-decoration:line-through;text-decoration-thickness:4px}.brain-twist .clue .arrow{color:#444;font-size:34px}.brain-twist .clue .row{flex-wrap:wrap;justify-content:center;align-items:center;gap:12px;display:flex}.brain-twist .answer-row{flex-wrap:wrap;justify-content:center;gap:6px;min-height:54px;padding-top:10px;display:flex}.brain-twist .ans-slot{width:28px;height:40px;font-family:var(--font-patrick-hand), cursive;color:#1a1a1a;border-bottom:3px solid #2b2b2b;justify-content:center;align-items:flex-end;padding-bottom:2px;font-size:30px;line-height:1;display:flex}.brain-twist .ans-slot.filled{animation:.18s bt-pop}.brain-twist .ans-slot.wrong{color:#d33;border-color:#d33}@keyframes bt-pop{0%{transform:scale(.6)}to{transform:scale(1)}}.brain-twist .kb-wrap{flex-direction:column;place-self:center;gap:9px;width:min(96%,560px);padding:10px 4px;display:flex}.brain-twist .kb-row{justify-content:center;gap:6px;display:flex}.brain-twist .key{aspect-ratio:1/1.05;color:#222;cursor:pointer;background:#fff;border:2px solid #555;border-radius:8px;flex:1;justify-content:center;align-items:center;max-width:50px;font-size:clamp(14px,2.4vw,22px);font-weight:600;transition:transform 80ms,box-shadow 80ms;display:flex;box-shadow:0 3px #555,inset 0 -2px #0000000f}.brain-twist .key:active{transform:translateY(3px);box-shadow:0 0 #555}.brain-twist .key.special{background:var(--bt-blue);color:#fff;border-color:#2a93b8;flex:none;width:46px;box-shadow:0 3px #2a93b8}.brain-twist .key.special.del{background:#888;border-color:#555}.brain-twist .hints-bar{z-index:5;justify-content:center;gap:24px;display:flex;position:absolute;bottom:14px;left:0;right:0}.brain-twist .hint-btn{cursor:pointer;color:#fff;border:3px solid #444;border-radius:50%;justify-content:center;align-items:center;width:62px;height:62px;font-size:26px;transition:transform .1s;display:flex;position:relative;box-shadow:0 4px #00000059}.brain-twist .hint-btn:active{transform:translateY(2px);box-shadow:0 2px #00000059}.brain-twist .hint-btn.search{background:var(--bt-orange)}.brain-twist .hint-btn.video{background:var(--bt-green-d)}.brain-twist .hint-btn.letter{background:var(--bt-purple);color:#3a1d5e}.brain-twist .hint-btn.skip{background:var(--bt-red)}.brain-twist .hint-cost{color:#5a4400;background:#fffceb;border:2px solid #b89200;border-radius:14px;align-items:center;gap:3px;padding:1px 7px;font-size:13px;font-weight:700;display:flex;position:absolute;top:-22px;right:-6px}.brain-twist .hint-cost .mini{background:radial-gradient(circle at 35% 30%,#fffba6,#ffd84d 60%,#e8b800);border:1px solid #b89200;border-radius:50%;width:14px;height:14px}.brain-twist .hint-bubble{font-family:var(--font-patrick-hand), cursive;text-align:center;z-index:50;opacity:0;pointer-events:none;background:#fff;border:3px solid #222;border-radius:18px;max-width:78%;padding:18px 22px;font-size:24px;transition:opacity .2s,transform .25s cubic-bezier(.5,1.7,.4,1);position:absolute;top:42%;left:50%;transform:translate(-50%,-50%)scale(.6);box-shadow:6px 6px #0000004d}.brain-twist .hint-bubble.show{opacity:1;pointer-events:auto;transform:translate(-50%,-50%)scale(1)}.brain-twist .hint-bubble .close-x{color:#fff;cursor:pointer;background:#ef5b5b;border:2px solid #222;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;font-weight:700;display:flex;position:absolute;top:-14px;right:-14px}.brain-twist .overlay{z-index:100;opacity:0;pointer-events:none;background:#0000008c;justify-content:center;align-items:center;transition:opacity .25s;display:flex;position:absolute;inset:0}.brain-twist .overlay.show{opacity:1;pointer-events:auto}.brain-twist .panel{text-align:center;background:#fffdf5;border:4px solid #2b2b2b;border-radius:22px;width:min(90%,480px);padding:26px 28px;transition:transform .25s cubic-bezier(.5,1.7,.4,1);transform:scale(.7);box-shadow:8px 8px #00000059}.brain-twist .overlay.show .panel{transform:scale(1)}.brain-twist .panel h2{font-family:var(--font-patrick-hand), cursive;margin:0 0 10px;font-size:42px}.brain-twist .panel p{color:#444;margin:6px 0 18px;font-size:18px}.brain-twist .panel button{background:var(--bt-yellow);cursor:pointer;color:#3a2700;border:3px solid #b89200;border-radius:14px;margin:6px;padding:10px 22px;font-family:inherit;font-size:18px;font-weight:700;box-shadow:0 4px #8a6c00}.brain-twist .panel button:active{transform:translateY(2px);box-shadow:0 2px #8a6c00}.brain-twist .panel button.primary{background:var(--bt-green);border-color:var(--bt-green-d);box-shadow:0 4px 0 var(--bt-green-d);color:#1a3d0a}.brain-twist .mode-screen{z-index:9;background:repeating-linear-gradient(92deg, #0000000a 0 2px, transparent 2px 9px), linear-gradient(135deg, var(--bt-wood-1), var(--bt-wood-2) 60%, var(--bt-wood-3));flex-direction:column;padding:24px 18px;display:none;position:absolute;inset:0}.brain-twist .mode-screen.show{display:flex}.brain-twist .mode-cards{flex-direction:column;flex:1;justify-content:center;align-items:center;gap:20px;display:flex}.brain-twist .mode-card{cursor:pointer;border:4px solid #2b2b2b;border-radius:22px;align-items:center;gap:18px;width:min(92%,460px);padding:20px 24px;transition:transform .12s,box-shadow .12s;display:flex;box-shadow:0 6px #2b2b2b,0 12px 24px #00000040}.brain-twist .mode-card:active{transform:translateY(4px);box-shadow:0 2px #2b2b2b,0 6px 14px #00000040}.brain-twist .mode-card.easy{background:linear-gradient(135deg,#a6e887,#5eaf3c)}.brain-twist .mode-card.medium{background:linear-gradient(135deg,#ffd470,#ff9a4d)}.brain-twist .mode-card.hard{background:linear-gradient(135deg,#ff8a8a,#d94a4a)}.brain-twist .mode-icon{filter:drop-shadow(2px 2px #00000040);flex-shrink:0;font-size:48px}.brain-twist .mode-info{color:#fffdf5;text-shadow:2px 2px #00000040;flex:1}.brain-twist .mode-info h3{font-family:var(--font-patrick-hand), cursive;letter-spacing:1px;margin:0;font-size:34px}.brain-twist .mode-info p{opacity:.95;margin:2px 0 0;font-size:13px;font-weight:500}.brain-twist .mode-progress{color:#fff;background:#0003;border:2px solid #fff6;border-radius:14px;flex-shrink:0;padding:4px 10px;font-size:14px;font-weight:700}.brain-twist .game-title{font-family:var(--font-patrick-hand), cursive;text-align:center;color:#fffbe6;text-shadow:3px 3px #6b3d12,0 0 14px #00000040;letter-spacing:2px;margin:18px 0 0;font-size:54px}.brain-twist .game-tagline{text-align:center;color:#fff5c2;letter-spacing:3px;text-shadow:1px 1px #6b3d12;margin-top:-2px;font-size:15px}.brain-twist .levels-screen{z-index:8;background:repeating-linear-gradient(92deg, #0000000a 0 2px, transparent 2px 9px), linear-gradient(135deg, var(--bt-wood-1), var(--bt-wood-2) 60%, var(--bt-wood-3));flex-direction:column;padding:74px 18px 24px;display:none;position:absolute;inset:0}.brain-twist .levels-screen.show{display:flex}.brain-twist .levels-grid{flex:1;grid-template-columns:repeat(8,1fr);align-content:start;gap:14px 12px;padding:8px 4px;display:grid;overflow-y:auto}.brain-twist .lvl-cell{aspect-ratio:1;cursor:pointer;background:#fff;border:3px solid #2b2b2b;border-radius:50%;justify-content:center;align-items:center;font-size:22px;font-weight:700;transition:transform .1s;display:flex;position:relative;box-shadow:0 4px #2b2b2b}.brain-twist .lvl-cell:active{transform:translateY(2px);box-shadow:0 2px #2b2b2b}.brain-twist .lvl-cell.done{background:var(--bt-green)}.brain-twist .lvl-cell.current{background:var(--bt-purple)}.brain-twist .lvl-cell.locked{color:#888;cursor:not-allowed;background:#fff;box-shadow:0 4px #aaa}.brain-twist .lvl-cell.locked:after{content:"🔒";font-size:20px}.brain-twist .lvl-cell.locked .num{display:none}.brain-twist .lvl-cell.done:before{content:"";border-bottom:3px solid #fff;border-left:3px solid #fff;width:22px;height:12px;position:absolute;bottom:-7px;left:50%;transform:translate(-50%)rotate(-45deg)}.brain-twist .back-btn{z-index:11;background:var(--bt-yellow);cursor:pointer;color:#3a2700;border:3px solid #b89200;border-radius:50%;justify-content:center;align-items:center;width:46px;height:46px;font-size:22px;display:flex;position:absolute;top:14px;left:18px;box-shadow:0 3px #8a6c00}@keyframes bt-shake{0%,to{transform:translate(0)}20%{transform:translate(-8px)}40%{transform:translate(8px)}60%{transform:translate(-6px)}80%{transform:translate(6px)}}.brain-twist .shake{animation:.4s bt-shake}@keyframes bt-sparkle{0%{opacity:1;transform:scale(0)rotate(0)}to{opacity:0;transform:scale(1.5)rotate(180deg)}}.brain-twist .sparkle{pointer-events:none;z-index:200;font-size:26px;animation:.7s forwards bt-sparkle;position:absolute}.brain-twist .levels-flash{font-family:var(--font-patrick-hand), cursive;z-index:200;white-space:nowrap;background:#fff;border:3px solid #222;border-radius:14px;padding:10px 18px;font-size:20px;position:absolute;top:74px;left:50%;transform:translate(-50%);box-shadow:4px 4px #0000004d}@media (max-width:760px){.brain-twist .stage{grid-template-rows:auto auto;grid-template-columns:1fr;gap:8px;padding:64px 10px 120px}.brain-twist .paper-wrap{aspect-ratio:1.2;width:min(86%,360px)}.brain-twist .clue .word{font-size:36px}.brain-twist .clue .small{font-size:20px}.brain-twist .clue .emoji{font-size:50px}.brain-twist .ans-slot{width:22px;height:32px;font-size:24px}.brain-twist .level-title{font-size:22px}.brain-twist .level-title .sub{font-size:12px}.brain-twist .key{max-width:36px;font-size:15px}.brain-twist .hint-btn{width:50px;height:50px;font-size:20px}.brain-twist .hints-bar{gap:10px}.brain-twist .levels-grid{grid-template-columns:repeat(5,1fr);gap:10px}.brain-twist .mode-icon{font-size:40px}.brain-twist .mode-info h3{font-size:26px}.brain-twist .game-title{font-size:38px}}