@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap";:root{--bg-primary:#0a0d14;--bg-secondary:#0f1422;--bg-card:#121826b3;--bg-card-hover:#1a2236cc;--border-subtle:#ffffff14;--border-focus:#3b82f680;--accent-cyan:#06b6d4;--accent-blue:#3b82f6;--accent-emerald:#10b981;--accent-amber:#f59e0b;--accent-rose:#f43f5e;--accent-violet:#8b5cf6;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-full:9999px;--shadow-glow-blue:0 0 25px #3b82f640;--shadow-glow-emerald:0 0 25px #10b98140;--shadow-glow-amber:0 0 25px #f59e0b40}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;overflow-x:hidden}code,pre{font-family:JetBrains Mono,monospace}.glass-panel{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-subtle);border-radius:var(--radius-lg)}.glass-panel-subtle{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:#0f142280}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{border-radius:var(--radius-full);background:#ffffff26}::-webkit-scrollbar-thumb:hover{background:#ffffff40}.btn-primary{background:linear-gradient(135deg, var(--accent-blue), #2563eb);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;align-items:center;gap:8px;padding:8px 18px;font-size:.875rem;font-weight:600;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex;box-shadow:0 4px 14px #2563eb4d}.btn-primary:hover:not(:disabled){filter:brightness(1.1);transform:translateY(-1px);box-shadow:0 6px 20px #2563eb73}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-success{background:linear-gradient(135deg, var(--accent-emerald), #059669);color:#fff;border-radius:var(--radius-md);cursor:pointer;border:none;align-items:center;gap:8px;padding:8px 18px;font-size:.875rem;font-weight:600;transition:all .2s;display:inline-flex;box-shadow:0 4px 14px #10b9814d}.btn-success:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 20px #10b98173}.btn-ghost{color:var(--text-secondary);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;background:#ffffff0d;align-items:center;gap:6px;padding:7px 14px;font-size:.85rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-ghost:hover{color:var(--text-primary);background:#ffffff1a;border-color:#fff3}.btn-ghost.active{color:var(--accent-blue);background:#3b82f626;border-color:#3b82f666}.badge-easy{color:#34d399;border-radius:var(--radius-full);background:#10b98126;border:1px solid #10b9814d;padding:3px 8px;font-size:.75rem;font-weight:600}.badge-medium{color:#fbbf24;border-radius:var(--radius-full);background:#f59e0b26;border:1px solid #f59e0b4d;padding:3px 8px;font-size:.75rem;font-weight:600}@keyframes pulse-glow{0%{box-shadow:0 0 #3b82f666}70%{box-shadow:0 0 0 10px #3b82f600}to{box-shadow:0 0 #3b82f600}}.anim-pulse{animation:2s infinite pulse-glow}