* { margin:0; padding:0; box-sizing:border-box; -webkit-tap-highlight-color:transparent; }
:root {
  --bg:#0d1117; --bg2:#161b22; --card:#1c2333; --card2:#232c40;
  --line:#2d3a52; --txt:#e6edf3; --dim:#8b98a9; --acc:#7ee787; --acc2:#3fb950;
  --warn:#f0b429; --bad:#f85149; --info:#58a6ff;
}
html,body { height:100%; }
body {
  background:radial-gradient(1200px 600px at 80% -10%, #12233a 0%, var(--bg) 55%);
  color:var(--txt);
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  overflow:hidden;
}
#app { max-width:640px; margin:0 auto; height:100dvh; display:flex; flex-direction:column; position:relative; }
.screen { position:absolute; inset:0; display:none; flex-direction:column; }
.screen.active { display:flex; }
.scroll { flex:1; overflow-y:auto; padding:14px; -webkit-overflow-scrolling:touch; }
.scroll.center { display:flex; flex-direction:column; align-items:center; justify-content:flex-start; padding-top:24px; }

/* top bar */
.topbar { display:flex; align-items:center; justify-content:space-between; padding:14px 14px 8px; }
.brand { font-weight:800; font-size:20px; letter-spacing:.5px; }
.player { display:flex; align-items:center; gap:8px; cursor:pointer; background:var(--card); border:1px solid var(--line); padding:6px 10px; border-radius:12px; }
.lvl { font-weight:700; font-size:13px; color:var(--acc); }
.xpbar { width:70px; height:6px; background:#0b0f14; border-radius:3px; overflow:hidden; }
.xpfill { height:100%; width:0%; background:linear-gradient(90deg,var(--acc2),var(--acc)); border-radius:3px; transition:width .4s; }

/* category + topic cards */
.cat { margin:10px 0 16px; }
.cathead { display:flex; align-items:center; gap:8px; margin-bottom:9px; padding-left:2px; }
.catdot { width:8px; height:8px; border-radius:50%; flex-shrink:0; }
.cat h3 { font-size:13px; color:var(--dim); text-transform:uppercase; letter-spacing:1px; }
.topicgrid { display:grid; grid-template-columns:1fr; gap:8px; }
.topic {
  display:flex; align-items:center; gap:13px;
  background:var(--card); border:1px solid var(--line); border-radius:14px;
  padding:11px 13px; cursor:pointer; transition:transform .06s, border-color .15s;
}
.topic:active { transform:scale(.985); border-color:var(--acc2); }
.tile {
  width:44px; height:44px; border-radius:11px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  color:#0d1117;
}
.tile svg { width:24px; height:24px; }
.tinfo { min-width:0; flex:1; }
.tn { font-weight:700; font-size:15px; line-height:1.2; }
.tq { font-size:12px; color:var(--dim); margin-top:3px; }
.txprow { display:flex; align-items:center; gap:8px; margin-top:6px; }
.txpbar { flex:1; height:5px; background:#0b0f14; border-radius:3px; overflow:hidden; }
.txpfill { height:100%; background:linear-gradient(90deg,var(--acc2),var(--acc)); border-radius:3px; transition:width .4s; }
.txplv { font-size:10.5px; font-weight:700; color:var(--acc); }
.topic.locked { opacity:.55; }
.topic.locked:active { transform:none; border-color:var(--line); }
.topic.locked .tile { color:#8b98a9; }
.lockbadge { display:inline-block; font-size:9px; font-weight:800; color:var(--dim); background:var(--bg2); border:1px solid var(--line); padding:1px 5px; border-radius:6px; vertical-align:middle; margin-left:4px; letter-spacing:.5px; }
.newbadge { display:inline-block; font-size:9px; font-weight:800; color:#04140a; background:var(--warn); padding:1px 5px; border-radius:6px; vertical-align:middle; margin-left:4px; letter-spacing:.5px; }

/* setup */
.back { background:none; border:none; color:var(--info); font-size:15px; font-weight:600; cursor:pointer; align-self:flex-start; margin:0 0 10px 4px; }
#setupTitle { font-size:24px; font-weight:800; margin:6px 0 2px; text-align:center; }
.setuptop { display:flex; align-items:center; gap:12px; margin-top:4px; }
.tile.big { width:52px; height:52px; border-radius:14px; }
.tile.big svg { width:28px; height:28px; }
.setupCount { color:var(--dim); font-size:14px; margin-bottom:22px; }
.choicegroup { width:100%; max-width:380px; background:var(--card); border:1px solid var(--line); border-radius:16px; padding:16px; margin-bottom:18px; }
.choice-label { font-size:12px; color:var(--dim); text-transform:uppercase; letter-spacing:1px; margin:10px 0 6px; }
.choice-label:first-child { margin-top:0; }
.seg { display:flex; gap:6px; }
.segbtn {
  flex:1; background:var(--bg2); color:var(--dim); border:1px solid var(--line);
  padding:11px 4px; border-radius:10px; font-size:13px; font-weight:600; cursor:pointer; transition:all .12s;
}
.segbtn.on { background:var(--acc2); color:#04140a; border-color:var(--acc2); }
.bigbtn {
  width:100%; max-width:380px; background:linear-gradient(135deg,var(--acc2),var(--acc));
  color:#04140a; border:none; padding:15px; border-radius:14px; font-size:17px; font-weight:800;
  cursor:pointer; margin-top:6px; letter-spacing:.5px;
}
.bigbtn:active { transform:scale(.98); }
.bigbtn.alt { background:var(--card2); color:var(--txt); border:1px solid var(--line); }

/* quiz HUD */
.hud { display:flex; align-items:center; justify-content:space-between; padding:14px 14px 6px; }
.hudL,.hudR { display:flex; align-items:center; gap:10px; }
.hearts { font-size:16px; letter-spacing:1px; }
.streak { font-size:14px; font-weight:700; color:var(--warn); }
.score { font-size:18px; font-weight:800; color:var(--acc); }
.qpos { font-size:13px; color:var(--dim); font-weight:600; }
.timerbar { height:5px; background:#0b0f14; margin:8px 14px 0; border-radius:3px; overflow:hidden; }
.timerfill { height:100%; width:100%; background:var(--info); border-radius:3px; transition:width .1s linear; }
.timerfill.low { background:var(--bad); }
.timerfill.mid { background:var(--warn); }

.qcard {
  background:var(--card); border:1px solid var(--line); border-radius:18px;
  padding:20px 16px; margin-top:14px;
}
.qtext { font-size:18px; font-weight:600; line-height:1.45; margin-bottom:16px; white-space:pre-wrap; word-break:break-word; }
.opt {
  display:block; width:100%; text-align:left; background:var(--bg2); color:var(--txt);
  border:1.5px solid var(--line); border-radius:12px; padding:14px 14px; margin-bottom:9px;
  font-size:15px; font-weight:500; cursor:pointer; line-height:1.35; transition:all .1s;
}
.opt:active { transform:scale(.985); }
.opt.correct { background:#12331c; border-color:var(--acc2); color:var(--acc); }
.opt.wrong { background:#331418; border-color:var(--bad); color:var(--bad); }
.opt.dim { opacity:.45; }

#typebox input {
  width:100%; background:var(--bg2); border:1.5px solid var(--line); color:var(--txt);
  border-radius:12px; padding:14px; font-size:17px; margin-bottom:10px; outline:none;
}
#typebox input:focus { border-color:var(--info); }

.feedback { margin-top:12px; padding:12px 14px; border-radius:12px; font-size:14px; line-height:1.45; }
.feedback.good { background:#12331c; border:1px solid var(--acc2); color:var(--acc); }
.feedback.bad { background:#331418; border:1px solid var(--bad); color:var(--bad); }
.feedback .explain { color:var(--dim); margin-top:6px; font-size:13px; }
.feedback .yourans { color:var(--dim); font-size:12.5px; margin-top:4px; }
.hidden { display:none !important; }
#nextBtn { margin-top:14px; }

/* results */
#confetti { position:absolute; inset:0; pointer-events:none; overflow:hidden; z-index:5; }
#resTitle { font-size:26px; font-weight:800; margin-top:8px; }
.resScore { font-size:56px; font-weight:900; color:var(--acc); line-height:1; margin:10px 0 4px; }
.xpGain { font-size:16px; font-weight:700; color:var(--warn); margin:6px 0 16px; }
.unlockline { font-size:13px; font-weight:700; color:var(--acc); background:#12331c; border:1px solid var(--acc2); border-radius:10px; padding:8px 12px; margin:-8px 0 14px; max-width:380px; width:100%; text-align:center; }
.resRow { display:flex; gap:10px; width:100%; max-width:380px; margin-bottom:16px; }
.resCell { flex:1; background:var(--card); border:1px solid var(--line); border-radius:14px; padding:12px 6px; text-align:center; }
.resBig { font-size:22px; font-weight:800; }
.resLab { font-size:11px; color:var(--dim); text-transform:uppercase; letter-spacing:.5px; margin-top:2px; }
.resBtns { display:flex; gap:10px; width:100%; max-width:380px; }
.resBtns .bigbtn { margin-top:0; }
#review { width:100%; max-width:380px; margin-top:20px; text-align:left; }
#review h3 { font-size:14px; color:var(--dim); text-transform:uppercase; letter-spacing:1px; margin-bottom:10px; }
.revItem { background:var(--card); border:1px solid var(--line); border-radius:12px; padding:12px; margin-bottom:8px; }
.revQ { font-size:14px; font-weight:600; margin-bottom:4px; }
.revA { font-size:13px; color:var(--bad); }
.revC { font-size:13px; color:var(--acc); margin-top:2px; }
.revE { font-size:12.5px; color:var(--dim); margin-top:4px; }

/* stats overlay */
.overlay { position:fixed; inset:0; background:rgba(0,0,0,.6); display:flex; align-items:flex-end; justify-content:center; z-index:50; }
.sheet {
  width:100%; max-width:640px; max-height:85dvh; overflow-y:auto; background:var(--bg2);
  border:1px solid var(--line); border-radius:20px 20px 0 0; padding:20px 18px 30px;
}
.sheet h3 { font-size:16px; margin-bottom:10px; }
.statRow { display:flex; justify-content:space-between; padding:9px 2px; border-bottom:1px solid var(--line); font-size:14px; }
.statRow b { color:var(--acc); }
#stTopics { margin-bottom:16px; }
.stTopicRow { display:flex; justify-content:space-between; padding:7px 2px; font-size:13px; color:var(--dim); }
.stTopicRow b { color:var(--txt); }

/* auth screen */
.authbox {
  width:100%; max-width:340px; background:var(--card); border:1px solid var(--line);
  border-radius:20px; padding:28px 22px; margin-top:40px; text-align:center;
}
.authlogo { font-size:52px; line-height:1; margin-bottom:6px; }
.authh1 { font-size:24px; font-weight:900; letter-spacing:1px; }
.authsub { color:var(--dim); font-size:13.5px; margin:6px 0 20px; }
.authinput {
  width:100%; background:var(--bg2); border:1.5px solid var(--line); color:var(--txt);
  border-radius:12px; padding:13px 14px; font-size:16px; margin-bottom:10px; outline:none;
}
.authinput:focus { border-color:var(--info); }
.autherr { color:var(--bad); font-size:13px; min-height:18px; margin:2px 0 8px; font-weight:600; }
.guestbtn { background:none; border:none; color:var(--dim); font-size:12.5px; margin-top:14px; cursor:pointer; text-decoration:underline; }
.logoutbtn { margin-top:8px; border-color:var(--bad); color:var(--bad); }

/* toast */
#toast {
  position:fixed; bottom:26px; left:50%; transform:translateX(-50%) translateY(20px);
  background:var(--card2); border:1px solid var(--line); color:var(--txt);
  padding:11px 18px; border-radius:12px; font-size:14px; font-weight:600;
  opacity:0; pointer-events:none; transition:all .25s; z-index:99; max-width:90%; text-align:center;
  box-shadow:0 6px 24px rgba(0,0,0,.5);
}
#toast.show { opacity:1; transform:translateX(-50%) translateY(0); }

/* ---------- v5 additions: economy, modal, profile ---------- */
.pricebadge { display:inline-block; font-size:10px; font-weight:800; color:#04140a; background:var(--warn); padding:1px 6px; border-radius:6px; vertical-align:middle; margin-left:4px; letter-spacing:.5px; }
.wormhud { font-size:13px; font-weight:800; color:var(--warn); }
.wormsGain { font-size:16px; font-weight:800; color:var(--warn); margin:-8px 0 14px; }
.modalbox { max-width:380px; border-radius:18px; margin-bottom:40px; text-align:center; }
.modalbox h3 { font-size:18px; margin-bottom:8px; }
.modalbody { font-size:15px; line-height:1.5; margin-bottom:16px; }
.modalbody .dim { color:var(--dim); font-size:13px; }
.modalbox .resBtns { width:100%; max-width:none; }
.prohead { display:flex; align-items:center; gap:14px; width:100%; max-width:380px; margin:8px 0 14px; }
.proavatar { width:72px; height:72px; border-radius:18px; background:var(--card2); border:2px solid var(--acc2); display:flex; align-items:center; justify-content:center; flex-shrink:0; overflow:hidden; }
.proid { min-width:0; }
.proname { font-size:20px; font-weight:800; }
.prouser { color:var(--dim); font-size:13.5px; }
.projoined { color:var(--dim); font-size:12px; margin-top:2px; }
.procard { width:100%; max-width:380px; background:var(--card); border:1px solid var(--line); border-radius:16px; padding:14px 16px; margin-bottom:12px; }
.procardtitle { font-size:13px; font-weight:700; color:var(--dim); text-transform:uppercase; letter-spacing:.8px; margin-bottom:10px; }
.xpbar.big { width:100%; height:8px; margin-bottom:12px; }
.prostats { display:flex; gap:8px; }
.ps { flex:1; background:var(--bg2); border-radius:10px; padding:9px 4px; text-align:center; }
.ps b { display:block; font-size:17px; color:var(--acc); }
.ps span { font-size:10px; color:var(--dim); text-transform:uppercase; letter-spacing:.4px; }
.inventory { display:flex; flex-direction:column; gap:6px; margin-bottom:10px; }
.invrow { display:flex; align-items:center; gap:10px; background:var(--bg2); border-radius:10px; padding:8px 12px; }
.invic { font-size:20px; }
.invname { flex:1; font-size:13.5px; font-weight:600; }
.invamt { font-size:15px; color:var(--acc); }
.bigbtn.sm { font-size:13px; padding:11px; margin-top:0; }
.pfpgrid { display:grid; grid-template-columns:repeat(4, 1fr); gap:8px; }
.pfpcard { background:var(--bg2); border:1.5px solid var(--line); border-radius:12px; padding:10px 6px; text-align:center; cursor:pointer; transition:border-color .12s; }
.pfpcard.equipped { border-color:var(--acc2); background:#12331c; }
.pfpcard svg, .pfpcard img { display:block; margin:0 auto; border-radius:12px; }
.pfpname { font-size:11px; font-weight:700; margin-top:6px; }
.pfpbtn { font-size:10px; color:var(--dim); margin-top:2px; font-weight:600; }
.pfpcard.equipped .pfpbtn { color:var(--acc); }

/* ---------- v5.5: bucket mastery ---------- */
.topic.exhausted { opacity:.6; cursor:default; }
.topic.exhausted:active { transform:none; border-color:var(--line); }
.topic.exhausted .tile { color:#8b98a9; }
.topic.exhausted .tile svg { width:38px; height:24px; }
.donebadge { display:inline-block; font-size:9px; font-weight:800; color:#04140a; background:var(--acc2); padding:1px 5px; border-radius:6px; vertical-align:middle; margin-left:4px; letter-spacing:.5px; }
.bucketline { font-size:14px; font-weight:800; color:var(--acc); background:#12331c; border:1px solid var(--acc2); border-radius:10px; padding:9px 12px; margin:-8px 0 14px; max-width:380px; width:100%; text-align:center; }

/* ---------- v5.6: shop, blitz, boosts ---------- */
.shopbtn { background:var(--card2); border:1px solid var(--line); color:var(--txt); font-size:13px; font-weight:700; padding:7px 13px; border-radius:10px; cursor:pointer; }
.shopbtn:active { transform:scale(.96); }
.hudbtn { background:var(--card); border:1px solid var(--line); color:var(--acc); font-size:12.5px; font-weight:800; padding:4px 9px; border-radius:9px; cursor:pointer; user-select:none; }
.hudbtn:active { transform:scale(.94); background:var(--card2); }
.blitzbanner { width:100%; max-width:380px; background:linear-gradient(135deg,#3d2b0f,#5c3a0e); border:1px solid var(--warn); color:var(--warn); font-size:13.5px; font-weight:800; border-radius:12px; padding:10px 12px; margin-bottom:16px; text-align:center; }
.topic.blitz { opacity:1; cursor:pointer; border-color:var(--warn); }
.topic.blitz:active { transform:scale(.985); }
.blitzbadge { display:inline-block; font-size:9px; font-weight:800; color:#04140a; background:var(--warn); padding:1px 5px; border-radius:6px; vertical-align:middle; margin-left:4px; letter-spacing:.5px; }
.shopbal { width:100%; max-width:380px; background:var(--card); border:1px solid var(--line); border-radius:16px; padding:12px 16px; margin-bottom:12px; }
.shopbalrow { display:flex; justify-content:space-between; padding:5px 0; font-size:14px; }
.shopbalrow b { color:var(--acc); }
.shopbalrow.dim b { color:var(--warn); }
.shopgrid { display:grid; grid-template-columns:1fr; gap:10px; width:100%; max-width:380px; }
.shopcard { background:var(--card); border:1px solid var(--line); border-radius:16px; padding:14px 16px; }
.shopico { font-size:26px; }
.shopname { font-size:16px; font-weight:800; margin-top:4px; }
.shopdesc { font-size:13px; color:var(--dim); margin:4px 0 8px; line-height:1.4; }
.shopown { font-size:12.5px; font-weight:700; color:var(--acc); margin-bottom:6px; }

/* ---------- v5.7: blitz section ---------- */
.blitzhero { font-size:30px; font-weight:900; margin-top:6px; }
.blitzsub { color:var(--dim); font-size:14px; margin:6px 0 14px; max-width:380px; width:100%; }
.blitzlocked { width:100%; max-width:380px; background:var(--card); border:1px dashed var(--line); border-radius:14px; padding:14px 16px; color:var(--dim); font-size:14px; font-weight:600; text-align:center; margin-bottom:12px; }
.blitzlisttitle { width:100%; max-width:380px; font-size:12px; color:var(--dim); text-transform:uppercase; letter-spacing:1px; margin:14px 0 8px; }
.blitzcard { display:flex; align-items:center; gap:12px; width:100%; max-width:380px; background:var(--card); border:1px solid var(--line); border-radius:14px; padding:11px 13px; margin-bottom:8px; cursor:pointer; }
.blitzcard.locked { opacity:.65; cursor:default; }
.blitzcard.farmall { border-color:var(--warn); background:linear-gradient(135deg,#3d2b0f,#262b36); }
.blitzcard.farmall .blitzname { color:var(--warn); }
.blitzico { font-size:22px; flex-shrink:0; }
.blitzinfo { flex:1; min-width:0; }
.blitzname { font-weight:800; font-size:15px; }
.blitzdesc { font-size:12px; color:var(--dim); margin-top:2px; }
.blitzgo { font-size:16px; color:var(--acc); }
.blitzbar { height:5px; background:#0b0f14; border-radius:3px; overflow:hidden; margin-top:5px; }
.blitzfill { height:100%; background:linear-gradient(90deg,var(--acc2),var(--acc)); border-radius:3px; }