.start-stop-section{padding:8px 0 24px;}
.start-stop-bar{display:flex;justify-content:center;gap:16px}
.btn-pill{min-width:140px;height:44px;padding:0 20px;border:none;border-radius:999px;color:#fff;font-weight:700;font-size:.95rem;box-shadow:0 6px 18px rgba(0,0,0,.12);cursor:pointer;transition:transform .2s,opacity .2s}
.btn-pill:active{transform:translateY(1px)}
.btn-pill:disabled{opacity:.5;cursor:not-allowed}
.btn-start{background:linear-gradient(135deg,#3fb1c6,#396ea5)}
.btn-stop{background:linear-gradient(135deg,#e98393,#e26b6b)}