:root{--bg: #0f0f0f;--surface: #1a1a2e;--primary: #00a8ff;--primary-hover: #0090e0;--text: #e0e0e0;--text-muted: #888;--border: #2a2a3e;--success: #00c853;--error: #ff5252}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.container{max-width:640px;margin:0 auto}h1{font-size:1.8rem;margin-bottom:.5rem}h2{font-size:1.3rem;margin-bottom:1rem;color:var(--primary)}p{color:var(--text-muted);margin-bottom:1rem;line-height:1.5}.card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}.qr-container{display:flex;flex-direction:column;align-items:center;gap:1rem}.qr-container img{border-radius:8px;background:#fff;padding:8px}button,.btn{display:inline-block;background:var(--primary);color:#fff;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem;cursor:pointer;transition:background .2s}button:hover,.btn:hover{background:var(--primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}input,textarea{width:100%;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:.75rem;font-size:.95rem;margin-bottom:1rem}input:focus,textarea:focus{outline:none;border-color:var(--primary)}label{display:block;margin-bottom:.35rem;font-weight:500;font-size:.9rem}.status-badge{display:inline-block;padding:.25rem .75rem;border-radius:20px;font-size:.8rem;font-weight:600}.status-badge.waiting{background:#ffc10726;color:#ffc107}.status-badge.connected{background:#00c85326;color:var(--success)}.data-section{margin-bottom:1.5rem}.data-section h3{font-size:1rem;margin-bottom:.5rem;color:var(--primary)}pre{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:1rem;overflow-x:auto;font-size:.8rem;line-height:1.4}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;margin-right:.5rem;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.error-msg{color:var(--error);font-size:.9rem}.help-text{font-size:.8rem;color:var(--text-muted);margin-top:-.5rem;margin-bottom:1rem}.steps{counter-reset:step;list-style:none;padding:0}.steps li{counter-increment:step;padding:.5rem 0 .5rem 2rem;position:relative;color:var(--text-muted);line-height:1.4}.steps li:before{content:counter(step);position:absolute;left:0;width:1.5rem;height:1.5rem;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700}.stat-box{background:var(--bg);border-radius:8px;padding:.6rem .75rem;border:1px solid var(--border)}.stat-box.highlight{border-color:var(--success);background:#00c8530f}.stat-value{font-size:1.05rem;font-weight:700;line-height:1.3}.stat-label{font-size:.7rem;color:var(--text-muted);margin-top:.1rem}