:root{--bg:#111827;--fg:#f3f4f6;--card:#1f2937;--ok:#16a34a;--bad:#dc2626;--gray:#4b5563}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px system-ui,sans-serif}
main{max-width:420px;margin:0 auto;padding:16px}h1{font-size:1.4rem}
input{width:100%;padding:14px;margin:6px 0;border-radius:10px;border:1px solid var(--gray);background:var(--card);color:var(--fg);font-size:1.1rem}
button{padding:14px;border:0;border-radius:10px;font-size:1rem;color:#fff;background:var(--gray);cursor:pointer}
button.ok{background:var(--ok)}button.bad{background:var(--bad)}button.big{width:100%;margin-top:10px;font-size:1.2rem}
button.link{background:none;text-decoration:underline;padding:0}
header{display:flex;justify-content:space-between;margin-bottom:12px}
#pad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:8px}#pad button{font-size:1.3rem}
#callBox{background:var(--card);border-radius:12px;padding:14px;margin-bottom:12px}
.row{display:flex;gap:8px;margin-top:10px}.row button{flex:1}.err{color:#f87171}[hidden]{display:none!important}