* {
    padding: 0;
    margin: 0;
}

:root {
    --bg-color: #fff;
    --input-bg-color: #d8d8d8;
}

body {
    background: var(--bg-color);
}

.reverse-container {
    /* width: 350px; */
    padding: 10% 30%;
    display: flex;
    align-items: center;
    flex-direction: column;
    /* background: var(--bg-color); */
}

#originalText,
input[type="text"] {
    width: 100%;
    height: 50px;
    margin: 10px 0;
    box-sizing: border-box;
    color: black;
    border: 1px solid transparent;
    background-color: var(--input-bg-color);
    border-radius: 10px;
    padding: 5px;
    font-size: 1rem;
    outline: none;
    transition: all 0.5s ease;
}

.controlBtn {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

#copyToClipboard,
#typeChangeBtn,
#submitBtn {
    box-sizing: border-box;
    width: 200px;
    margin: 10px 30px;
    padding: 5px 30px;
    border: none;
    background-color: #007bff;
    font-size: 18px;
    border-radius: 18px;
    color: #fff;
    cursor: pointer;
    transition: all 0.5s ease;
}

#copyToClipboard {
    display: none;
}

.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #555;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 999;
    bottom: 110%;
    left: 50%;
    transform: translateX(-50%);
    /* margin-left: -100px; */
    opacity: 0;
    transition: opacity 0.3s;
    box-shadow: #363535;
}

.tooltip .tooltiptext::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #555 transparent transparent transparent;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

@media (prefers-color-scheme: dark) {

    /* 深色模式 */
    :root {
        --bg-color: rgb(29, 29, 32);
        --input-bg-color: #363535;
    }

    #originalText,
    input[type="text"] {
        color: #fff;
    }
}

@media (max-width: 768px) {
    .reverse-container {
        padding: 10% 10%;
    }

}