@import url('https://fonts.googleapis.com/css2?family=Ma+Shan+Zheng&display=swap');

body {
    margin: 0;
    font-family: 'Ma Shan Zheng', cursive, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
    color: #333;
    /* 动画背景 */
    background: linear-gradient(45deg, #f8d7da, #d1e7dd, #cce5ff, #f8d7da);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.container h1 {
    font-size: 4em;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    margin-bottom: 5px;
}

.subtitle {
    font-size: 1.5em;
    color: rgba(255, 255, 255, 0.85);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    margin-top: 0;
    margin-bottom: 25px;
    font-weight: normal;
}

#main-img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
    margin-bottom: 25px;
    animation: pulse 4s infinite ease-in-out;
}

#lyrics {
    font-size: 1.7em;
    font-weight: bold;
    height: 70px;
    min-width: 450px;
    color: pink;
    transition: all 0.4s ease-in-out;
    animation: fadeIn 0.8s forwards;
}

#background-music {
    margin-top: 25px;
    filter: saturate(1.2);
}

footer {
    position: absolute;
    bottom: 15px;
    font-size: 0.9em;
    color: rgba(0, 0, 0, 0.4);
    font-family: sans-serif; /* 使用更易读的非艺术字体 */
}

/* 动画定义 */
@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 6px 20px rgba(0,0,0,0.2);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 10px 30px rgba(0,0,0,0.25);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}