body {
    font-family: 'Roboto', sans-serif;
    background-color: #f0f4f8;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    color: #333;
}

.container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0px 10px 30px rgba(0, 0, 0, 0.1);
    width: 400px;
    max-width: 100%;
    transition: all 0.3s ease;
}

.header {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
    text-align: center;
}

.instructions {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
    text-align: center;
}

.input-box {
    width: calc(100% - 24px);
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    resize: none;
    font-size: 14px;
    background-color: #fafafa;
    box-sizing: border-box;
}

.button {
    background-color: #007bff;
    color: #ffffff;
    border: none;
    padding: 12px;
    width: 100%;
    cursor: pointer;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 16px;
    transition: background-color 0.3s;
}

.options {
    margin-bottom: 15px;
}

.button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.button:hover:not(:disabled) {
    background-color: #0056b3;
}

.big-box {
    background-color: #50a4ff;
    color: #ffffff;
    padding: 20px;
    text-align: center;
    font-size: 24px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.item-list {
    list-style-type: none;
    padding-left: 0;
    margin-bottom: 15px;
}

.item-list li {
    padding: 8px;
    background-color: #f9f9f9;
    margin-bottom: 6px;
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    transition: background-color 0.3s;
}

.item-list li.checked {
    text-decoration: line-through;
    color: #888;
    background-color: #e0e0e0;
}

.reset-button {
    background: none;
    border: none;
    color: #007bff;
    cursor: pointer;
    text-decoration: underline;
    padding: 0;
    font-size: 14px;
    margin-top: 10px;
}

.reset-button:hover {
    color: #0056b3;
}

#gameplaySection {
    display: none;
}