/* 开屏动画专用样式 */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, #eafde1, #fffbb7, #d6edc8, #eafde1);
    background-size: 400% 400%;
    animation: gradientShift 3s ease infinite;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 1;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    animation: fadeInUp 1s ease forwards;
}

.loading-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

.loading-text {
    font-size: 2rem;
    font-weight: 700;
    color: rgba(0,0,0,0.7);
    margin-bottom: 0.5rem;
}

.loading-subtitle {
    font-size: 1rem;
    color: #666;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeIn 1s ease 1s forwards;
}

/* 动态省略号样式 */
.dots {
    display: inline-block;
    width: 1.5em;
    text-align: left;
    font-weight: bold;
}

/* 动画关键帧 */
@keyframes gradientShift {
    0% {background-position:0% 50%}
    50% {background-position:100% 50%}
    100% {background-position:0% 50%}
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

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

/* 移动端优化 */
@media (max-width: 768px) {
    .loading-icon {
        font-size: 3rem;
    }

    .loading-text {
        font-size: 1.5rem;
    }
}