/* countdown.php：在线倒计时样式 */
.countdown-row {
    max-width: 360px;
}

.countdown-display {
    margin-top: 14px;
    padding: 18px 14px;
    border-radius: 10px;
    border: 1px solid #1d4ed8;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    font-size: 34px;
    font-weight: 700;
    letter-spacing: 1px;
    color: #f8fafc;
    text-align: center;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}

/* 全屏时强调倒计时显示，便于远距离查看 */
.countdown-display:fullscreen {
    min-height: 100vh;
    width: 100vw;
    margin: 0;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(42px, 8vw, 110px);
    border: none;
    background: radial-gradient(circle at 50% 40%, #1d4ed8 0%, #0b1220 65%);
    color: #ffffff;
    box-shadow: none;
}

@media (max-width: 768px) {
    .countdown-display {
        font-size: 26px;
        padding: 14px 10px;
    }
}