body {
    overflow: hidden;
    margin: 0;
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    font-family: Arial, sans-serif;

    background-color: #121212;
    color: #ffffff;
}

a {
    text-decoration: none;
    color: #ffffff;
    
}

.version {
    position: absolute;
    text-align: center;
    bottom: 15px;
    color: rgba(255, 255, 255, 0.228);
    text-decoration: none;
    font-size: 0.85rem;
}

.nav1 {
    width: 65px;
    height: 25px;
    border: none;
    border-radius: 7px;

    background-color: #22c55e;
    color: #0f0f0f;

    font-size: 14px;
    font-weight: bold;

    cursor: pointer;

    transition: background-color 0.15s, transform 0.1s;
}

.nav1:hover{
    background-color: #4ade80;
}

.container {
    width: 300px;

    display: flex;
    flex-direction: column;
    align-items: center;

    gap: 12px;

    padding: 30px;

}

#timer {
    width: 200px;
    height: 65px;

    margin: 0;

    text-align: center;

    font-size: 26px;
    font-weight: bold;

    color: #4ade80;
}

#started,
#duration,
#totalStrengthToday,
#usage {
    width: 200px;
    min-height: 20px;

    margin: 0;

    text-align: center;

    color: #bdbdbd;
}

.actionButton {
    width: 150px;
    height: 42px;

    border: none;
    border-radius: 7px;

    background-color: #22c55e;
    color: #0f0f0f;

    font-size: 16px;
    font-weight: bold;

    cursor: pointer;

    transition: background-color 0.15s, transform 0.1s;
}

.actionButton:hover {
    background-color: #4ade80;
}

.actionButton:active {
    transform: scale(0.97);
}

#endButton {
    background-color: #ef4444;
    color: white;
}

#endButton:hover {
    background-color: #f87171;
}

#sessionTable {
    width: 100%;
    border-collapse: collapse;
}

#sessionTable th,
#sessionTable td {
    padding: 10px;
    text-align: center;
    border-bottom: 1px solid #333;
}

#sessionTable th {
    color: #4ade80;
}

#sessionTable td {
    color: #ddd;
}