#page {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(to right, #4facfe, #00f2fe);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.container {
    text-align: center;
}

#title {
    font-size: 36px;
    margin-bottom: 10px;
}

.countdown-text {
    font-size: 48px;
    margin-bottom: 30px;
    font-weight: bold;
}

.label {
    font-size: 16px;
}

.time-input {
    padding: 10px;
    font-size: 16px;
    width: 100px;
    text-align: center;
    border: none;
    border-radius: 8px;
    background-color: #fff;
    color: #333;
    margin-left: 10px;
}

.button-group {
    margin-top: 20px;
}

.btn {
    padding: 10px 20px;
    font-size: 16px;
    margin: 10px 5px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.2s ease;
}

.start-btn {
    background-color: #28a745;
    color: white;
}

.start-btn:hover {
    background-color: #218838;
    transform: scale(1.05);
}

.reset-btn {
    background-color: #dc3545;
    color: white;
}

.reset-btn:hover {
    background-color: #c82333;
    transform: scale(1.05);
}