:root{--primary:#6366f1;--primary-dark:#4f46e5;--primary-light:#818cf8;--secondary:#f59e0b;--secondary-dark:#d97706;--success:#10b981;--error:#ef4444;--warning:#f59e0b;--info:#3b82f6;--twitch:#9146ff;--twitch-dark:#772ce8;--bg:#f8fafc;--bg-card:#fff;--bg-dark:#1e293b;--text:#1e293b;--text-muted:#64748b;--text-light:#94a3b8;--border:#e2e8f0;--border-dark:#cbd5e1;--radius-sm:6px;--radius:12px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 2px rgba(0,0,0,.05);--shadow:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -2px rgba(0,0,0,.1);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -4px rgba(0,0,0,.1);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 8px 10px -6px rgba(0,0,0,.1);--transition:150ms ease}*{box-sizing:border-box;margin:0;padding:0}body,html{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}.btn,button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:600;border-radius:var(--radius);border:none;cursor:pointer;transition:all var(--transition);background:var(--primary);color:#fff}.btn:hover:not(:disabled),button:hover:not(:disabled){background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow)}.btn:active:not(:disabled),button:active:not(:disabled){transform:translateY(0)}.btn:disabled,button:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg-card);color:var(--text);border:2px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--bg);border-color:var(--border-dark)}.btn-success{background:var(--success)}.btn-success:hover:not(:disabled){background:#059669}.btn-danger{background:var(--error)}.btn-danger:hover:not(:disabled){background:#dc2626}.btn-twitch{background:var(--twitch)}.btn-twitch:hover:not(:disabled){background:var(--twitch-dark)}.btn-ghost{background:transparent;color:var(--text)}.btn-ghost:hover:not(:disabled){background:var(--border);transform:none;box-shadow:none}.btn-lg{padding:14px 28px;font-size:16px}.btn-sm{padding:6px 12px;font-size:13px}.btn-icon{padding:10px;width:40px;height:40px}input,select,textarea{width:100%;padding:12px 16px;font-size:14px;border:2px solid var(--border);border-radius:var(--radius);background:var(--bg-card);color:var(--text);transition:all var(--transition)}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(99,102,241,.1)}input::placeholder{color:var(--text-light)}.card{background:var(--bg-card);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow)}.card-hover{transition:all var(--transition)}.card-hover:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.page{min-height:calc(100vh - 70px);padding:32px 24px}.grid{display:grid;grid-gap:16px;gap:16px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width:768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-1{gap:4px}.gap-2{gap:8px}.gap-3{gap:12px}.gap-4{gap:16px}.gap-6{gap:24px}.text-center{text-align:center}.text-muted{color:var(--text-muted)}.text-sm{font-size:13px}.text-lg{font-size:18px}.text-xl{font-size:24px}.text-2xl{font-size:32px}.font-bold{font-weight:700}.font-semibold{font-weight:600}.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mt-6{margin-top:24px}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.p-4{padding:16px}.p-6{padding:24px}.badge{display:inline-flex;align-items:center;padding:4px 10px;font-size:12px;font-weight:600;border-radius:100px;background:var(--border);color:var(--text-muted)}.badge-primary{background:rgba(99,102,241,.1);color:var(--primary)}.badge-success{background:rgba(16,185,129,.1);color:var(--success)}.badge-warning{background:rgba(245,158,11,.1);color:var(--warning)}.badge-error{background:rgba(239,68,68,.1);color:var(--error)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.animate-fade-in{animation:fadeIn .3s ease}.animate-pulse{animation:pulse 2s infinite}.progress-bar{height:8px;background:var(--border);border-radius:100px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-light));transition:width .3s ease}.timer{font-size:48px;font-weight:700;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;color:var(--primary)}.timer-danger{color:var(--error);animation:pulse .5s infinite}.avatar{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.avatar-lg{width:64px;height:64px;font-size:24px}.avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.leaderboard-item{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-card);border-radius:var(--radius);transition:all var(--transition)}.leaderboard-item:hover{background:var(--bg)}.leaderboard-rank{width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-weight:700;border-radius:50%;background:var(--border);color:var(--text-muted)}.leaderboard-rank.gold{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#fff}.leaderboard-rank.silver{background:linear-gradient(135deg,#e2e8f0,#cbd5e1);color:#64748b}.leaderboard-rank.bronze{background:linear-gradient(135deg,#f59e0b,#d97706);color:#fff}.quiz-option{padding:16px 24px;font-size:16px;text-align:left;background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:all var(--transition)}.quiz-option:hover:not(:disabled){border-color:var(--primary);background:rgba(99,102,241,.05);transform:none}.quiz-option.selected{border-color:var(--primary);background:rgba(99,102,241,.1)}.quiz-option.correct{border-color:var(--success);background:rgba(16,185,129,.1)}.quiz-option.incorrect{border-color:var(--error);background:rgba(239,68,68,.1)}.quiz-option:disabled{cursor:default}.qr-container{display:flex;flex-direction:column;align-items:center;gap:12px;padding:20px;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow)}.emoji-btn{font-size:24px;padding:8px;background:var(--bg);border:2px solid transparent;border-radius:var(--radius);cursor:pointer;transition:all var(--transition)}.emoji-btn:hover{transform:scale(1.2);background:var(--border)}.floating-emoji{position:fixed;font-size:32px;pointer-events:none;animation:floatUp 2s ease-out forwards;z-index:1000}@keyframes floatUp{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-100px) scale(1.5)}}.divider{display:flex;align-items:center;gap:16px;color:var(--text-light);font-size:13px}.divider:after,.divider:before{content:"";flex:1 1;height:1px;background:var(--border)}.toast{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow-lg);animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translateX(100%)}to{opacity:1;transform:translateX(0)}}