body {
    background: #f8f9fa;
    color: #212529;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

a {
    color: #0d6efd;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.navbar {
    background-color: #ffffff;
    border-bottom: 1px solid #dee2e6;
}

.navbar .nav-link {
    color: #212529;
}

.navbar .nav-link.active {
    font-weight: bold;
}

.container-fluid {
    padding: 20px;
}

.score-container {
    text-align: center;
}

.score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 10px;
    border: 6px solid #0d6efd;
    display: flex;
    justify-content: center;
    align-items: center;
}

.score-value {
    font-size: 2.3rem;
    font-weight: bold;
}

.history-entry {
    background: #ffffff;
    border-radius: 12px;
    padding: 15px;
    border: 1px solid #dee2e6;
    margin-bottom: 12px;
    transition: background 0.2s;
}

.history-entry:hover {
    background: #e9ecef;
    cursor: pointer;
}

.login-container {
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px;
    width: 350px;
    text-align: center;
    border: 1px solid #dee2e6;
}

.btn-primary {
    background: #0d6efd;
    border: none;
    color: #ffffff;
}

.btn-primary:hover {
    background: #0b5ed7;
}

.status-indicator {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 5px;
}

.status-disconnected {
    background-color: #dc3545;
}

.status-connected {
    background-color: #198754;
}