.timer-card {
    max-width: 500px;
    margin: 20px auto;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border: none;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
.timer-box {
    background-color: #ffffff;
    border-radius: 8px;
    padding: 10px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #343a40;
}
.timer-label {
    font-size: 0.9rem;
    color: #6c757d;
    text-transform: uppercase;
}
.expired-message {
    font-size: 1.2rem;
    font-weight: bold;
    color: #dc3545;
}