:root{--bg: #0f172a;--bg-2: #1e293b;--indigo: #4f46e5;--indigo-light: #818cf8;--text: #e2e8f0;--muted: #94a3b8;--danger: #f87171}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:radial-gradient(circle at 50% 0%,var(--bg-2),var(--bg));color:var(--text)}.app{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:max(2rem,env(safe-area-inset-top)) 1.5rem max(2rem,env(safe-area-inset-bottom));text-align:center}.header h1{margin:0;font-size:2rem;letter-spacing:-.02em;background:linear-gradient(90deg,var(--indigo-light),#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}.tagline{margin:.35rem 0 0;color:var(--muted)}.orb{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;width:100%;max-width:340px;position:relative}.orb:before{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:radial-gradient(circle,var(--indigo),transparent 70%);opacity:.35;transition:transform .4s ease,opacity .4s ease;z-index:-1}.orb--speaking:before{animation:pulse 1.1s ease-in-out infinite;opacity:.6}.orb--listening:before{animation:pulse 2.2s ease-in-out infinite;opacity:.45}.orb--connecting:before{animation:pulse 1.6s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.25)}}.orb__status{font-size:1.5rem;font-weight:600}.orb__hint{color:var(--muted);max-width:260px}.controls{width:100%;max-width:340px}.btn{width:100%;padding:1.1rem 1.5rem;font-size:1.1rem;font-weight:600;border:none;border-radius:999px;cursor:pointer;color:#fff;transition:transform .15s ease,box-shadow .2s ease}.btn:active{transform:scale(.97)}.btn--start{background:linear-gradient(135deg,var(--indigo),#7c3aed);box-shadow:0 8px 24px #4f46e573}.btn--stop{background:linear-gradient(135deg,#dc2626,#b91c1c)}.error{color:var(--danger);background:#f871711a;border:1px solid rgba(248,113,113,.3);padding:.6rem 1rem;border-radius:12px;max-width:340px}.footer{color:var(--muted);font-size:.85rem;max-width:320px}