*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #070b14;--bg2: #0d1321;--bg3: #111827;--card: #0f1a2e;--border: #1e3a5f;--border2: #1a2744;--text: #e2e8f0;--text2: #94a3b8;--text3: #64748b;--accent: #00d4ff;--accent2: #7c3aed;--green: #00ff88;--red: #ff4466;--yellow: #fbbf24;--orange: #f97316;--font: "Space Grotesk", sans-serif;--mono: "JetBrains Mono", monospace;--display: "Syne", sans-serif}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg2)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--accent)}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:10px;font-family:var(--font);font-weight:600;font-size:14px;cursor:pointer;border:none;transition:all .2s ease;text-decoration:none}.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 0 20px #00d4ff33}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px #00d4ff66}.btn-outline{background:transparent;color:var(--accent);border:1px solid var(--border)}.btn-outline:hover{border-color:var(--accent);background:#00d4ff0d}.btn-ghost{background:#ffffff0d;color:var(--text2)}.btn-ghost:hover{background:#ffffff1a;color:var(--text)}.btn-danger{background:#ff446626;color:var(--red);border:1px solid rgba(255,68,102,.3)}.btn-danger:hover{background:#ff446640}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.card{background:var(--card);border:1px solid var(--border2);border-radius:16px;padding:24px}.card-glow{box-shadow:0 0 40px #00d4ff0d}input,textarea,select{background:var(--bg2);border:1px solid var(--border2);color:var(--text);font-family:var(--font);border-radius:10px;padding:12px 16px;font-size:14px;outline:none;transition:border-color .2s;width:100%}input:focus,textarea:focus,select:focus{border-color:var(--accent)}.tag{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600;letter-spacing:.03em}.tag-easy{background:#00ff881a;color:var(--green);border:1px solid rgba(0,255,136,.2)}.tag-medium{background:#fbbf241a;color:var(--yellow);border:1px solid rgba(251,191,36,.2)}.tag-hard{background:#ff44661a;color:var(--red);border:1px solid rgba(255,68,102,.2)}.tag-blue{background:#00d4ff1a;color:var(--accent);border:1px solid rgba(0,212,255,.2)}.tag-purple{background:#7c3aed1a;color:#a78bfa;border:1px solid rgba(124,58,237,.2)}.score-ring{width:100px;height:100px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--display);font-size:28px;font-weight:800;position:relative}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.fade-in{animation:fadeIn .4s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.slide-in{animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}.pulse{animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.recording-ring{animation:recordPulse 1.5s ease-in-out infinite}@keyframes recordPulse{0%,to{box-shadow:0 0 #f466}50%{box-shadow:0 0 0 15px #f460}}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}@media (max-width: 768px){.grid-2,.grid-3{grid-template-columns:1fr}}