body {
    font-family: 'HarmonyOS Sans SC Regular', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #121212;
    animation: fadeIn 1s;
    color: #e0e0e0;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

#fullscreen-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 10px 20px;
    font-size: 1.5rem;
    cursor: pointer;
    background-color: #1f1f1f;
    color: #e0e0e0;
    border: 1px solid #333;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s ease, transform 0.3s ease;
}

#fullscreen-btn:hover {
    background-color: #333;
    transform: scale(1.05);
}

.container {
    padding: 20px;
    max-width: 1200px;
    margin: auto;
    background-color: #1f1f1f;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

h1 {
    font-size: 4rem;
    font-weight: bold;
    text-align: left;
    margin-bottom: 5px;
    color: #e0e0e0;
}

#message {
    font-size: 1.5rem;
    color: #bb86fc;
    margin-bottom: 20px;
}

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

.left-column, .right-column {
    width: 48%;
    background-color: #1f1f1f;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
    border-radius: 8px;
}

#current-time {
    font-size: 8rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
    color: #bb86fc;
}

#current-subject, #exam-timing, #remaining-time, #status {
    font-size: 3rem;
    margin: 10px 0;
    text-align: left;
    color: #e0e0e0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    border: 1px solid #333;
    background-color: #1f1f1f;
}

th, td {
    border: 1px solid #333;
    padding: 8px; /* 缩短行高 */
    font-size: 2rem;
    text-align: center;
}

th {
    background-color: #333;
    color: #bb86fc;
    font-weight: bold;
    border-bottom: 2px solid #bb86fc;
}

.exam-status-进行中 td {
    color: green !important; /* 绿色字体 */
}

.exam-status-即将开始 td {
    color: orange !important; /* 橙色字体 */
}

.exam-status-已结束 td {
    color: red !important; /* 红色字体 */
}

.exam-status-空闲 td {
    color: blue !important; /* 蓝色字体 */
}

tr:hover {
    background-color: #333;
}

table {
    border-radius: 8px;
    overflow: hidden;
}

td {
    border-bottom: 1px solid #333;
}

td:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}

td:last-child {
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}