html,body,#root{height:100%;margin:0;padding:0;font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;background:linear-gradient(135deg,#1e3c72,#2a5298)}body,#root{min-height:100vh;display:flex;align-items:center;justify-content:center}.app-container{background:#fffffff7;border-radius:24px;box-shadow:0 4px 32px #0000002e;padding:2.5rem 2rem;display:flex;flex-direction:column;align-items:center;min-width:320px;max-width:400px;width:100%}.app-container h1{color:#222;margin-bottom:1rem;font-size:2.2rem;font-weight:700;letter-spacing:1px}.app-container p{color:#444;margin-bottom:2rem;text-align:center}.btn{width:100%;padding:1rem 0;margin-bottom:1rem;border:none;border-radius:2rem;font-size:1.1rem;font-weight:700;background:#1e3c72;color:#fff;box-shadow:0 2px 8px #1e3c721a;cursor:pointer;transition:background .2s,color .2s}.btn:last-child{margin-bottom:0}.status{width:100%;text-align:center;padding:.5rem 0;border-radius:1rem;margin-bottom:1rem;font-weight:500;background:#e3fcec;color:#276749}.status.off{background:#f7fafc;color:#718096}.laps-list{width:100%;max-height:160px;overflow-y:auto;margin-top:1rem;margin-bottom:1rem}.laps-list li{display:flex;justify-content:space-between;padding:.5rem 0;border-bottom:1px solid #e2e8f0;font-size:1rem;color:#222}.laps-list li:last-child{border-bottom:none}@media (max-width: 600px){.app-container{padding:1.2rem .5rem;min-width:0;max-width:98vw}.btn{font-size:1rem;padding:.8rem 0}}.app-container h1,.app-container p,.laps-list li,.status{color:#fff!important}.laps-list li{border-bottom:1px solid #4a5fa7}.btn{background:#1e3c72;color:#fff}.btn:hover{background:#2a5298;color:#fff}.laps-list{max-height:180px;overflow-y:auto;margin-top:1rem;margin-bottom:1rem;border-radius:12px;background:#ffffffb3;box-shadow:0 1px 6px #1e3c720f;padding-left:0}