:root{--bg-darkest: #ffffff;--bg-primary: #f8fafc;--bg-surface: #ffffff;--bg-card: #ffffff;--bg-elevated: #ffffff;--border-subtle: #e2e8f0;--border-active: #1a73e8;--border-glow: rgba(26, 115, 232, .2);--color-a-base: #ffffff;--color-b-cyan: #1a73e8;--color-b-cyan-glow: rgba(26, 115, 232, .35);--color-magenta: #e11d48;--color-emerald: #16a34a;--color-amber: #d97706;--text-main: #0f172a;--text-dim: #475569;--text-muted: #64748b;--font-sans: "Plus Jakarta Sans", "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--radius-xl: 24px;--shadow-glow: 0 4px 20px rgba(26, 115, 232, .15);--shadow-card: 0 4px 20px -2px rgba(0, 0, 0, .05), 0 2px 6px -1px rgba(0, 0, 0, .02)}*{box-sizing:border-box;margin:0;padding:0;-webkit-font-smoothing:antialiased}body{background-color:var(--bg-darkest);background-image:radial-gradient(circle at 50% 0%,rgba(26,115,232,.04) 0%,transparent 60%),radial-gradient(circle at 85% 30%,rgba(0,0,0,.02) 0%,transparent 50%),radial-gradient(circle at 15% 70%,rgba(26,115,232,.03) 0%,transparent 50%);color:var(--text-main);font-family:var(--font-sans);min-height:100vh;overflow-x:hidden;line-height:1.5}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-darkest)}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}.glass-panel{background:var(--bg-card);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.glass-panel-glow{background:var(--bg-card);backdrop-filter:blur(20px);border:1px solid var(--border-active);box-shadow:var(--shadow-glow)}.btn-primary{display:inline-flex;align-items:center;gap:8px;background:#1a73e8;color:#fff;font-weight:700;font-size:.92rem;padding:10px 20px;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all .2s cubic-bezier(.16,1,.3,1);box-shadow:0 4px 14px #1a73e840}.btn-primary:hover{background:#1557b0;transform:translateY(-2px);box-shadow:0 6px 20px #1a73e859}.btn-primary:active{transform:translateY(0)}.btn-secondary{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--text-main);font-weight:600;font-size:.92rem;padding:10px 18px;border-radius:var(--radius-md);border:1px solid var(--border-subtle);cursor:pointer;transition:all .2s ease;box-shadow:0 1px 3px #0000000a}.btn-secondary:hover{background:#f8fafc;border-color:#cbd5e1;color:#0f172a;transform:translateY(-1px)}.btn-icon{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:var(--radius-md);background:#fff;border:1px solid var(--border-subtle);color:var(--text-dim);cursor:pointer;transition:all .2s ease;box-shadow:0 1px 3px #0000000a}.btn-icon:hover{background:#eff6ff;border-color:#1a73e8;color:#1a73e8}body.theme-dark .btn-icon{background:#ffffff0d;border-color:#ffffff14;color:#94a3b8}body.theme-dark .btn-icon:hover{background:#00f0ff1a;border-color:#00f0ff;color:#00f0ff}.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:9999px;font-size:.78rem;font-weight:700;letter-spacing:.5px;text-transform:uppercase}.badge-cyan{background:#eff6ff;color:#1a73e8;border:1px solid rgba(26,115,232,.3)}body.theme-dark .badge-cyan{background:#00f0ff1f;color:#00f0ff;border:1px solid rgba(0,240,255,.3)}.badge-gold{background:#fef3c7;color:#b45309;border:1px solid rgba(245,158,11,.3)}body.theme-dark .badge-gold{background:#f59e0b26;color:#fbbf24}.badge-magenta{background:#ffe4e6;color:#e11d48;border:1px solid rgba(225,29,72,.3)}body.theme-dark .badge-magenta{background:#ff2a851f;color:#ff2a85}.char-untyped{color:#94a3b8;transition:color .1s ease}.char-correct{color:#1a73e8;font-weight:700}body.theme-dark .char-correct{color:#00f0ff;text-shadow:0 0 8px rgba(0,240,255,.5)}.char-error{color:#e11d48;background-color:#ffe4e6;border-radius:3px;padding:0 1px}body.theme-dark .char-error{color:#ff2a85;background-color:#ff2a8540;text-shadow:0 0 8px rgba(255,42,133,.5)}.char-active{color:#0f172a;position:relative;border-bottom:3px solid #1a73e8;animation:blink-border 1s infinite}body.theme-dark .char-active{color:#fff;border-bottom:2px solid #00f0ff}@keyframes blink-border{0%,to{border-color:#1a73e8}50%{border-color:transparent}}.canvas-container{width:100%;height:340px;position:relative;border-radius:var(--radius-lg);overflow:hidden;background:radial-gradient(circle at 50% 40%,#1a2030,#0d111b 85%);border:1px solid #cbd5e1;box-shadow:0 10px 30px #00000014}@media (max-width: 1180px){.arena-sidebar-ad-left,.arena-sidebar-ad-right{display:none!important}}