*{box-sizing:border-box}
.ipc-app{max-width:760px;margin:20px auto;padding:20px;font-family:Arial,sans-serif}
.ipc-form,.ipc-result{background:#f5f5f5;padding:22px;border-radius:14px;margin-bottom:20px;box-shadow:0 4px 15px #0001}
label{display:block;font-weight:600;margin-top:14px}
input,select{width:100%;padding:13px;margin-top:6px;border-radius:8px;border:1px solid #ccc;font-size:16px}
button{padding:12px 18px;border:0;border-radius:8px;margin-top:15px;cursor:pointer}
.ipc-actions{display:flex;gap:10px;flex-wrap:wrap}
.ipc-dark .ipc-form,.ipc-dark .ipc-result{background:#222;color:#fff}
@media(max-width:600px){.ipc-app{padding:12px}.ipc-actions button{width:100%}}