*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color:#6366f1;--primary-dark:#4f46e5;--success-color:#10b981;--error-color:#ef4444;--bg-color:#f8fafc;--card-bg:#fff;--text-primary:#1e293b;--text-secondary:#64748b;--border-color:#e2e8f0;--shadow:0 1px 3px 0 rgba(0,0,0,.1),0 1px 2px 0 rgba(0,0,0,.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;padding:20px;color:var(--text-primary)}.container{max-width:1200px;margin:0 auto}header{text-align:center;color:#fff;margin-bottom:30px;padding:40px 20px}header h1{font-size:2.5rem;font-weight:700;margin-bottom:10px;text-shadow:0 2px 4px rgba(0,0,0,.2)}.subtitle{font-size:1.2rem;opacity:.9}.status-card{background:var(--card-bg);border-radius:12px;padding:20px;margin-bottom:30px;display:flex;align-items:center;gap:15px;box-shadow:var(--shadow-lg);transition:all .3s ease}.status-indicator{width:12px;height:12px;border-radius:50%;background:var(--text-secondary);animation:pulse 2s infinite}.status-indicator.connected{background:var(--success-color);animation:none}.status-indicator.error{background:var(--error-color);animation:none}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.content{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:20px;gap:20px;margin-bottom:30px}.card{background:var(--card-bg);border-radius:12px;padding:25px;box-shadow:var(--shadow-lg);transition:transform .2s ease,box-shadow .2s ease}.card:hover{transform:translateY(-2px);box-shadow:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04)}.card h2{font-size:1.5rem;color:var(--text-primary)}.btn,.card h2{margin-bottom:15px}.btn{background:var(--primary-color);color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease;width:100%}.btn:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 6px -1px rgba(0,0,0,.1)}.btn:active{transform:translateY(0)}.btn:disabled{background:var(--text-secondary);cursor:not-allowed;transform:none}.result{background:#f1f5f9;border:1px solid var(--border-color);border-radius:8px;padding:15px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:.9rem;overflow-x:auto;min-height:60px;white-space:pre-wrap;word-wrap:break-word;color:var(--text-primary)}.result:empty:before{content:"No response yet...";color:var(--text-secondary);font-style:italic}.result.success{border-color:var(--success-color);background:#f0fdf4}.result.error{border-color:var(--error-color);background:#fef2f2}footer{background:var(--card-bg);border-radius:12px;padding:20px;text-align:center;box-shadow:var(--shadow-lg)}footer p{margin:8px 0;color:var(--text-secondary)}footer code{background:#f1f5f9;padding:4px 8px;border-radius:4px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:.9rem}footer a{color:var(--primary-color);text-decoration:none;font-weight:600;transition:color .2s ease}footer a:hover{color:var(--primary-dark);text-decoration:underline}.loading{display:inline-block;width:16px;height:16px;border-radius:50%;border:3px solid hsla(0,0%,100%,.3);border-top-color:#fff;animation:spin .8s linear infinite;margin-right:8px}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:768px){header h1{font-size:2rem}.content{grid-template-columns:1fr}}