body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

h1 {
    color: #1a73e8;
    font-size: 24px;
}

.translate-box {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    margin: 20px 0;
}

.input-area, .output-area {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.swap-btn {
    margin: 0 10px;
    align-self: center;
}

select {
    padding: 5px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

textarea {
    width: 100%;
    height: 300px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: none;
    font-size: 16px;
}

.translate-btn {
    background-color: #1a73e8;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.translate-btn:hover {
    background-color: #1557b0;
}

/* 计时区域样式 */
.timer {
    text-align: center;
    margin-top: 10px;
    font-size: 16px;
    color: #5f6368;
}

.timer span {
    font-weight: 500;
    color: #1a73e8;
}