:root{
  --bg:#0f172a; --panel:#1e293b; --panel2:#334155; --text:#f8fafc; --muted:#94a3b8;
  --green:#22c55e; --red:#ef4444; --yellow:#facc15; --blue:#3b82f6; --purple:#a855f7; --orange:#f97316;
  --radius:18px; --shadow:0 8px 0 rgba(0,0,0,.25);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:"Fredoka","Baloo 2","Nunito","PingFang SC","Microsoft YaHei",system-ui,sans-serif;overflow-x:hidden;user-select:none;-webkit-user-select:none}
button{font-family:inherit;cursor:pointer;border:none}
.screen{display:none;min-height:100%;padding:16px;max-width:820px;margin:0 auto}
.screen.active{display:block;animation:pop .25s ease}
@keyframes pop{from{transform:scale(.97);opacity:.4}to{transform:scale(1);opacity:1}}

/* Top bar */
.topbar{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.topbar .spacer{flex:1}
.pill{background:var(--panel);border-radius:999px;padding:6px 12px;font-weight:700;display:inline-flex;align-items:center;gap:6px;font-size:16px}
.pill.coins{color:var(--yellow)} .pill.gems{color:#67e8f9}
.pill.bump{animation:bump .4s ease}
@keyframes bump{30%{transform:scale(1.25)}}

/* Buttons - Roblox style: chunky, thick bottom shadow */
.btn{background:var(--blue);color:#fff;font-weight:800;font-size:20px;padding:14px 22px;border-radius:var(--radius);box-shadow:0 6px 0 #1d4ed8;transition:transform .08s,box-shadow .08s;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-align:center}
.btn:active{transform:translateY(5px);box-shadow:0 1px 0 #1d4ed8}
.btn.green{background:var(--green);box-shadow:0 6px 0 #15803d}.btn.green:active{box-shadow:0 1px 0 #15803d}
.btn.red{background:var(--red);box-shadow:0 6px 0 #b91c1c}.btn.red:active{box-shadow:0 1px 0 #b91c1c}
.btn.yellow{background:var(--yellow);color:#422006;box-shadow:0 6px 0 #ca8a04}.btn.yellow:active{box-shadow:0 1px 0 #ca8a04}
.btn.purple{background:var(--purple);box-shadow:0 6px 0 #7e22ce}.btn.purple:active{box-shadow:0 1px 0 #7e22ce}
.btn.gray{background:var(--panel2);box-shadow:0 6px 0 #1e293b}.btn.gray:active{box-shadow:0 1px 0 #1e293b}
.btn.small{font-size:16px;padding:9px 14px;border-radius:14px;box-shadow:0 4px 0 rgba(0,0,0,.35)}
.btn.small:active{box-shadow:0 1px 0 rgba(0,0,0,.35);transform:translateY(3px)}
.btn.big{font-size:26px;padding:18px 30px}
.btn.block{display:flex;width:100%}
.btn:disabled{opacity:.5;pointer-events:none}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.center{text-align:center}
.mt{margin-top:14px}.mb{margin-bottom:14px}
h1{font-size:34px;margin:6px 0}
h2{font-size:24px;margin:8px 0}
.sub{color:var(--muted);font-size:15px}
.card{background:var(--panel);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}

/* Avatar - blocky Roblox-like figure */
.avatar{position:relative;display:inline-block;width:80px;height:120px;--skin:#fcd34d;--shirt:#3b82f6;--pants:#22c55e}
.avatar .hat{position:absolute;left:50%;top:-26px;transform:translateX(-50%);font-size:34px;line-height:1;z-index:3}
.avatar .head{position:absolute;left:50%;top:6px;transform:translateX(-50%);width:40px;height:38px;background:var(--skin);border-radius:8px;z-index:2}
.avatar .head:before{content:"";position:absolute;left:9px;top:12px;width:6px;height:9px;background:#0f172a;border-radius:3px;box-shadow:16px 0 0 #0f172a}
.avatar .head:after{content:"";position:absolute;left:14px;top:26px;width:12px;height:5px;border-bottom:3px solid #0f172a;border-radius:0 0 8px 8px}
.avatar .torso{position:absolute;left:50%;top:46px;transform:translateX(-50%);width:42px;height:42px;background:var(--shirt);border-radius:6px}
.avatar .arm{position:absolute;top:46px;width:14px;height:42px;background:var(--skin);border-radius:6px}
.avatar .arm.l{left:4px}.avatar .arm.r{right:4px}
.avatar .leg{position:absolute;top:90px;width:18px;height:30px;background:var(--pants);border-radius:5px}
.avatar .leg.l{left:20px}.avatar .leg.r{right:20px}
.avatar .pet{position:absolute;right:-30px;bottom:0;font-size:32px}
.avatar.big{transform:scale(1.6);transform-origin:top center;margin:20px 0 70px}
.avatar.dance{animation:dance .6s ease infinite alternate}
@keyframes dance{from{transform:rotate(-6deg) translateY(0)}to{transform:rotate(6deg) translateY(-8px)}}

/* Player select */
.players{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.player-card{background:var(--panel);border-radius:var(--radius);padding:24px 16px 16px;text-align:center;cursor:pointer;border:4px solid transparent;box-shadow:var(--shadow);transition:transform .1s}
.player-card:hover{transform:translateY(-3px);border-color:var(--yellow)}
.player-card .name{font-size:24px;font-weight:800;margin-top:10px}
.player-card.add{display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--muted);border:3px dashed var(--panel2);min-height:200px}

/* Home */
.home-hero{display:flex;gap:16px;align-items:center;padding:16px}
.home-hero .info{flex:1}
.xpbar{height:14px;background:#0f172a;border-radius:999px;overflow:hidden;margin-top:6px}
.xpbar>div{height:100%;background:linear-gradient(90deg,#22c55e,#a3e635);transition:width .5s}
.menu-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:14px}
.menu-grid .btn{font-size:22px;padding:22px 10px;flex-direction:column}
.menu-grid .btn small{font-size:14px;opacity:.85;font-weight:600}
.quest{display:flex;align-items:center;gap:10px;background:var(--panel);padding:12px 14px;border-radius:14px;margin-top:12px}
.quest .bar{flex:1;height:12px;background:#0f172a;border-radius:999px;overflow:hidden}
.quest .bar>div{height:100%;background:var(--orange)}

/* Map */
.world{border-radius:var(--radius);padding:16px;margin-bottom:16px;color:#0f172a;box-shadow:var(--shadow);position:relative;overflow:hidden}
.world.locked{filter:grayscale(.9);opacity:.6}
.world h2{display:flex;align-items:center;gap:8px;margin:0 0 10px}
.world .stages{display:flex;gap:10px;flex-wrap:wrap}
.stage{width:78px;height:86px;border-radius:16px;background:#fff;box-shadow:0 5px 0 rgba(0,0,0,.2);display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:30px;font-weight:900;cursor:pointer;transition:transform .08s;position:relative}
.stage:active{transform:translateY(4px);box-shadow:0 1px 0 rgba(0,0,0,.2)}
.stage.locked{background:#e2e8f0;color:#94a3b8;cursor:default}
.stage.boss{background:#1e293b;color:#fff;font-size:26px}
.stage.boss.done{background:#7c3aed}
.stage .stars{font-size:11px;letter-spacing:-1px;line-height:1;margin-top:3px}
.stage .lock{position:absolute;top:4px;right:6px;font-size:14px}
.chest{font-size:44px;align-self:center}

/* Stage play */
.progress{display:flex;gap:6px;margin:8px 0 14px}
.progress>div{flex:1;height:10px;border-radius:999px;background:var(--panel2)}
.progress>div.done{background:var(--green)}.progress>div.cur{background:var(--yellow)}
.prompt{font-size:26px;font-weight:800;text-align:center;margin:10px 0}
.prompt .cn{display:block;font-size:16px;color:var(--muted);font-weight:600;margin-top:4px}
.bigletter{font-size:120px;font-weight:900;text-align:center;line-height:1;margin:10px 0;text-shadow:0 8px 0 rgba(0,0,0,.3)}
.bigletter small{font-size:90px}
.choices{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:12px;margin:14px 0}
.choice{background:#fff;color:#0f172a;font-size:56px;font-weight:900;border-radius:20px;height:110px;display:flex;align-items:center;justify-content:center;box-shadow:0 7px 0 #94a3b8;transition:transform .08s;cursor:pointer;line-height:1}
.choice:active{transform:translateY(5px);box-shadow:0 2px 0 #94a3b8}
.choice.pic{flex-direction:column;font-size:52px;height:130px}
.choice.pic span{font-size:16px;font-weight:700;margin-top:4px}
.choice.ok{background:var(--green);color:#fff;box-shadow:0 7px 0 #15803d;animation:bump .4s}
.choice.bad{background:var(--red);color:#fff;box-shadow:0 7px 0 #b91c1c;animation:shake .4s}
@keyframes shake{20%{transform:translateX(-8px)}40%{transform:translateX(8px)}60%{transform:translateX(-6px)}80%{transform:translateX(6px)}}
.feedback{text-align:center;font-size:22px;font-weight:800;min-height:32px;margin-top:6px}

/* Trace */
.trace-wrap{display:flex;flex-direction:column;align-items:center}
canvas.trace{background:#fff;border-radius:20px;touch-action:none;box-shadow:var(--shadow);max-width:100%}
.accent-toggle{display:inline-flex;background:var(--panel);border-radius:999px;padding:4px}
.accent-toggle button{background:transparent;color:var(--muted);font-weight:800;padding:8px 14px;border-radius:999px;font-size:15px}
.accent-toggle button.on{background:var(--blue);color:#fff}

/* Result / rewards */
.result{text-align:center}
.result .stars{font-size:64px;letter-spacing:4px;margin:8px 0}
.result .stars span{display:inline-block;opacity:.25;filter:grayscale(1)}
.result .stars span.on{opacity:1;filter:none;animation:starIn .5s ease backwards}
@keyframes starIn{from{transform:scale(0) rotate(-180deg)}to{transform:scale(1)}}
.reward-line{font-size:26px;font-weight:800;margin:6px 0}
#toasts{position:fixed;left:0;right:0;bottom:24px;display:flex;flex-direction:column;align-items:center;gap:8px;z-index:50;pointer-events:none}
.badge-toast{background:var(--yellow);color:#422006;padding:12px 20px;border-radius:16px;font-weight:800;font-size:18px;box-shadow:var(--shadow);animation:toast 3s ease forwards;max-width:92vw;text-align:center}
@keyframes toast{0%{opacity:0;transform:translateY(30px)}10%,85%{opacity:1;transform:translateY(0)}100%{opacity:0}}
.coin-fly{position:fixed;font-size:28px;pointer-events:none;z-index:40;animation:fly 1s ease forwards}
@keyframes fly{to{transform:translateY(-150px) scale(.4);opacity:0}}
#confetti{position:fixed;inset:0;pointer-events:none;z-index:45}

/* Shop */
.shop-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px}
.item{background:var(--panel);border-radius:16px;padding:12px;text-align:center;box-shadow:var(--shadow)}
.item .ico{font-size:44px;height:56px;display:flex;align-items:center;justify-content:center}
.item .swatch{width:44px;height:44px;border-radius:10px;margin:6px auto}
.item .nm{font-weight:800}
.item .cn{font-size:13px;color:var(--muted)}
.item .btn{margin-top:8px}
.item.owned{outline:3px solid var(--green)}
.item.worn{outline:3px solid var(--yellow)}

/* Badges */
.badge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}
.badge{background:var(--panel);border-radius:16px;padding:12px;text-align:center;box-shadow:var(--shadow)}
.badge .ico{font-size:44px}
.badge.locked{opacity:.4;filter:grayscale(1)}
.badge .nm{font-weight:800;margin-top:4px}.badge .cn{font-size:12px;color:var(--muted)}

/* Leaderboard */
.lb{display:flex;flex-direction:column;gap:10px}
.lb .rowp{display:flex;align-items:center;gap:12px;background:var(--panel);padding:10px 14px;border-radius:14px}
.lb .rowp .nm{font-size:22px;font-weight:800;flex:1}
.lb .rowp .st{color:var(--muted);font-weight:700}

/* Rush */
.timer{font-size:40px;font-weight:900;text-align:center;color:var(--yellow)}

.hidden{display:none!important}
input[type=text]{font-family:inherit;font-size:22px;padding:12px 16px;border-radius:14px;border:3px solid var(--panel2);background:#0f172a;color:#fff;width:100%}
.swatches{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.swatches div{width:38px;height:38px;border-radius:10px;border:3px solid transparent;cursor:pointer}
.swatches div.on{border-color:#fff}
.dialog-bg{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:60;padding:16px}
.dialog{background:var(--panel);border-radius:var(--radius);padding:20px;max-width:420px;width:100%;text-align:center}
@media (max-width:480px){.bigletter{font-size:96px}.choice{font-size:44px;height:90px}.menu-grid .btn{font-size:18px;padding:16px 8px}h1{font-size:28px}}