:root {
    --primary-teal: #198d8d;
    --paper-bg: #f5f1e9;
    --paper-texture: url('https://www.transparenttextures.com/patterns/paper-fibers.png');
    --text-dark: #333;
    --text-muted: #666;
    --accent-red: #d9534f;
    --border-color: #dcd0c0;
    --hover-bg: #ece5d8;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    background-image: linear-gradient(rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.2)), url('https://images.unsplash.com/photo-1500382017468-9049fed747ef?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
    display: flex;
    justify-content: center;
}

.container {
    max-width: 800px;
    width: 100%;
    background-color: rgba(245, 241, 233, 0.95);
    background-image: var(--paper-texture);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    border-radius: 4px;
    padding: 40px;
    position: relative;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(5px);
}

/* Background decoration inspired by image 1 */
.background-decor {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 10px;
    background: linear-gradient(90deg, var(--primary-teal), #4db6ac, var(--primary-teal));
}

.header {
    border-bottom: 2px solid var(--primary-teal);
    padding-bottom: 20px;
    margin-bottom: 30px;
    position: relative;
}

.profile-card {
    display: flex;
    align-items: center;
    gap: 20px;
}

.avatar-link {
    flex-shrink: 0;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.avatar-link:hover {
    transform: scale(1.05);
}

.avatar-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 3px solid var(--primary-teal);
    object-fit: cover;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.singer-name {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-dark);
    letter-spacing: 2px;
}

.singer-title {
    font-size: 1.1rem;
    color: var(--primary-teal);
}

.singer-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 10px;
}

.live-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background-color: var(--accent-red);
    color: white;
    padding: 2px 10px;
    border-radius: 15px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: bold;
    animation: pulse 2s infinite;
    transition: all 0.3s;
}

.live-link:hover {
    transform: scale(1.05);
    box-shadow: 0 0 10px rgba(217, 83, 79, 0.5);
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.9; }
    100% { transform: scale(1); opacity: 1; }
}

.confidential-stamp {
    position: absolute;
    top: 0;
    right: 0;
    border: 3px solid var(--accent-red);
    color: var(--accent-red);
    padding: 5px 10px;
    font-weight: bold;
    transform: rotate(15deg);
    opacity: 0.7;
    font-family: 'Courier New', Courier, monospace;
    pointer-events: none;
}

.intro-text {
    font-style: italic;
    color: var(--text-muted);
    border-left: 3px solid var(--border-color);
    padding-left: 15px;
    margin-top: 15px;
}

.search-section {
    margin-bottom: 30px;
}

.search-box {
    position: relative;
    margin-bottom: 15px;
}

.search-box input {
    width: 100%;
    padding: 15px 45px 15px 20px;
    font-size: 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    background-color: rgba(255, 255, 255, 0.5);
    transition: all 0.3s;
    outline: none;
}

.search-box input:focus {
    border-color: var(--primary-teal);
    background-color: white;
    box-shadow: 0 0 10px rgba(25, 141, 141, 0.1);
}

.search-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.2rem;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-btn {
    padding: 5px 15px;
    border: 1px solid var(--primary-teal);
    background: transparent;
    color: var(--primary-teal);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.tag-btn:hover, .tag-btn.active {
    background-color: var(--primary-teal);
    color: white;
}

.playlist-section {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    background-color: white;
}

.playlist-header {
    display: grid;
    grid-template-columns: 2fr 1.5fr 2fr;
    background-color: var(--hover-bg);
    padding: 12px 20px;
    font-weight: bold;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.song-list {
    list-style: none;
}

.song-item {
    display: grid;
    grid-template-columns: 2fr 1.5fr 2fr;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s, transform 0.1s;
    cursor: pointer;
    align-items: center;
}

.song-item:active {
    transform: scale(0.98);
}

.song-item:last-child {
    border-bottom: none;
}

.song-item:hover {
    background-color: #f9f7f2;
}

.song-name {
    font-weight: 600;
    color: var(--text-dark);
}

.song-author {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.song-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.mini-tag {
    font-size: 0.75rem;
    padding: 2px 8px;
    background-color: #f0f0f0;
    color: var(--text-muted);
    border-radius: 10px;
}

.footer {
    margin-top: 40px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

/* Toast styling */
.toast {
    position: fixed;
    bottom: 50px; /* 稍微调高一点，避免被某些移动端浏览器底栏遮挡 */
    left: 50%;
    transform: translateX(-50%) translateY(20px); /* 初始位置稍微下移，做入场动画 */
    background-color: var(--primary-teal);
    color: white;
    padding: 12px 30px;
    border-radius: 50px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); /* 增加弹性动画 */
    z-index: 9999; /* 确保在最上层 */
    white-space: nowrap;
    pointer-events: none; /* 防止遮挡下方点击 */
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0); /* 回到正常位置 */
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .container {
        padding: 20px;
    }
    
    .playlist-header, .song-item {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    
    .playlist-header {
        display: none;
    }
    
    .song-item {
        padding: 15px;
    }
    
    .song-name::before {
        content: "歌名: ";
        font-weight: normal;
        color: var(--text-muted);
    }
    
    .song-author::before {
        content: "歌手: ";
    }
}