html,
body {
    height: 100%;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #000000;
    color: #d4d4d4;
    user-select: none;
    /* Impede a seleção de texto ao clicar rapidamente */
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

#bpm-display {
    font-size: 5rem;
    font-weight: bold;
    color: #ffffff;
    margin-top: 100px;
    margin-bottom: 200px;
}

p {
    font-size: 1rem;
    color: #2c2c2c;
}

#reset-btn {
    background-color: #00000000;
    color: #ffffff;
    border: 1px solid #ffffff;
    border-radius: 12px;
    padding: 10px 80px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}

#reset-btn:hover {
    background-color: #ffffff;
    color: #000000;
}