:root{--bg: #0c0d12;--bg-soft: #14161d;--bg-card: #191c25;--text: #f2f4f9;--muted: #949cb0;--line: #262a36;--glow: #15181f;--accent: #60a5fa;--good: #4ecdc4;--bad: #ff6b6b;--radius: 18px;--shadow: 0 16px 40px rgba(0, 0, 0, .5)}:root[data-theme=classic]{--bg: #12141c;--bg-soft: #1b1e2b;--bg-card: #21273a;--text: #eef1f7;--muted: #9aa3b8;--line: #2e3550;--glow: #1d2233;--shadow: 0 10px 30px rgba(0, 0, 0, .4);--accent: #54a0ff}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}html,body{margin:0;min-height:100%;background:radial-gradient(1100px 700px at 50% -20%,var(--glow),var(--bg));color:var(--text);font-family:Segoe UI,system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;overflow-x:hidden;overscroll-behavior:none;-webkit-tap-highlight-color:transparent}body{min-height:100dvh}button,a{-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;touch-action:manipulation;-webkit-user-select:none;user-select:none}#app{max-width:480px;margin:0 auto;padding:20px 18px 60px;padding-left:max(18px,env(safe-area-inset-left));padding-right:max(18px,env(safe-area-inset-right));padding-bottom:max(60px,env(safe-area-inset-bottom));padding-top:max(20px,env(safe-area-inset-top))}button{font-family:inherit}.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.back{color:var(--muted);text-decoration:none;font-size:.95rem;padding:8px 12px;border-radius:10px;border:1px solid var(--line);transition:background .15s}@media(hover:hover){.back:hover{background:var(--bg-soft)}}.title{font-size:1.4rem;font-weight:900;margin:0}.controls{display:flex;justify-content:center;margin-bottom:14px}.toggle{display:inline-flex;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:4px;gap:4px}.toggle button{border:none;background:transparent;color:var(--muted);font-weight:700;font-size:.9rem;padding:8px 16px;border-radius:9px;cursor:pointer;transition:background .15s,color .15s}.toggle button.active{background:var(--accent);color:#0f1420}.hud{display:flex;gap:10px;justify-content:center;margin-bottom:18px;flex-wrap:wrap}.pill{background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:8px 16px;text-align:center;min-width:78px}.pill .k{display:block;font-size:.64rem;text-transform:uppercase;letter-spacing:1px;color:var(--muted)}.pill .v{font-size:1.4rem;font-weight:800}.hearts{letter-spacing:2px}.prompt{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);min-height:150px;display:grid;place-items:center;margin-bottom:18px;padding:20px;text-align:center}.prompt .flag{font-size:6rem;line-height:1}.prompt .capital{font-size:2rem;font-weight:800}.prompt .capital small{display:block;font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:1px;font-weight:700;margin-bottom:6px}.options{display:grid;grid-template-columns:1fr 1fr;gap:10px}.opt{border:1px solid var(--line);background:var(--bg-soft);color:var(--text);padding:15px 10px;border-radius:12px;cursor:pointer;font-weight:700;font-size:1rem;transition:border-color .12s,background .12s,transform .06s}@media(hover:hover){.opt:hover{border-color:var(--accent)}}.opt:active{transform:scale(.97)}.opt.correct{border-color:var(--good);background:#4ecdc429}.opt.wrong{border-color:var(--bad);background:#ff6b6b29}.options.locked{pointer-events:none}.center{text-align:center}.hint{color:var(--muted);font-size:.9rem;margin-top:14px}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0a0c12d1;display:grid;place-items:center;padding:20px;overflow:auto;z-index:60;opacity:0;pointer-events:none;transition:opacity .2s}.overlay.show{opacity:1;pointer-events:auto}.modal{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:30px;text-align:center;max-width:380px;width:100%;max-height:90vh;overflow:auto;box-shadow:var(--shadow);transform:translateY(10px) scale(.98);transition:transform .2s}.overlay.show .modal{transform:translateY(0) scale(1)}.modal h2{margin:0 0 4px;font-size:1.8rem}.modal .big{font-size:3rem;font-weight:900;margin:6px 0}.modal .sub{color:var(--muted);margin:0}.modal .newbest{color:var(--accent);font-weight:800;margin:8px 0 0}.row{display:flex;gap:10px;margin-top:18px}.btn{flex:1;border:none;background:var(--accent);color:#0f1420;font-weight:800;font-size:1rem;padding:13px 20px;border-radius:12px;cursor:pointer;transition:transform .1s,filter .12s}@media(hover:hover){.btn:hover{filter:brightness(1.08)}}.btn:active{transform:scale(.97)}.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%) translateY(20px);background:var(--bg-card);border:1px solid var(--line);padding:12px 22px;border-radius:12px;font-weight:700;box-shadow:var(--shadow);opacity:0;transition:opacity .2s,transform .2s;pointer-events:none;z-index:70}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}