.tabata-timer-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 20px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
    font-family: Arial, sans-serif;
}

.tabata-timer-display {
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-bottom: 20px;
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.tabata-timer-main {
    grid-column: span 2;
    font-size: 80px;
    font-weight: bold;
    text-align: center;
}

.tabata-timer-rounds,
.tabata-timer-total-time {
    font-size: 24px;
    font-weight: bold;
    text-align: center;
}

.tabata-timer-settings {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-bottom: 20px;
    padding: 20px;
    background-color: #343a40;
    color: #ffffff;
    border-radius: 10px;
}

@media (max-width: 768px) {
    .tabata-timer-settings {
        grid-template-columns: 1fr;
    }
    .tabata-timer-container {
        padding: 10px;
    }
    #start-button, #stop-button, #pause-button {
        width: 100%;
        margin-top: 10px;
    }
    .tabata-timer-main {
        font-size: 60px;
    }
    .tabata-timer-rounds,
    .tabata-timer-total-time {
        font-size: 18px;
    }
}

.tabata-timer-setting {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.input-group {
    display: flex;
    align-items: center;
}

.input-group input {
    width: 50px;
    padding: 8px;
    text-align: center;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 5px;
    margin: 0 5px;
}
.tabata-timer-settings label {
    color: #ffffff;
    font-weight: bold;
    margin-bottom: 5px;
}

#start-button, #stop-button, #pause-button {
    padding: 15px 50px;
    font-size: 28px;
    color: #ffffff;
    background-color: #007bff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
    margin: 5px;
}

#start-button:hover, #stop-button:hover, #pause-button:hover {
    background-color: #0056b3;
}