/* 全局样式 - 高级深色主题 */
:root {
    --bg-primary: #0A0A0A;
    --bg-secondary: #141414;
    --bg-card: #1A1A1A;
    --bg-elevated: #242424;
    --accent-primary: #8B5CF6;
    --accent-secondary: #EC4899;
    --accent-gradient: linear-gradient(135deg, #8B5CF6, #EC4899);
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0A0;
    --text-tertiary: #6B6B6B;
    --border-color: #2A2A2A;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --glow-color: rgba(139, 92, 246, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 40px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width 0.3s;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 20px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* 主容器 */
.main-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 100px 40px 40px;
}

/* 渐变标题 */
.gradient-title {
    font-size: 48px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
}

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 30px;
}

/* 卡片样式 */
.card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    border: 1px solid transparent;
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 40px -10px var(--glow-color);
}

.card-image {
    position: relative;
    padding-bottom: 100%;
    overflow: hidden;
}

.card-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.card:hover .card-image img {
    transform: scale(1.1);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    opacity: 0;
    transition: opacity 0.3s;
    display: flex;
    align-items: flex-end;
    padding: 20px;
}

.card:hover .card-overlay {
    opacity: 1;
}

.play-button {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-gradient);
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    bottom: 20px;
    right: 20px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s;
    box-shadow: 0 10px 20px -5px var(--glow-color);
}

.card:hover .play-button {
    opacity: 1;
    transform: translateY(0);
}

.play-button:hover {
    transform: scale(1.1);
}

.card-content {
    padding: 16px;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 加载动画 */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-card) 25%,
        var(--bg-elevated) 50%,
        var(--bg-card) 75%
    );
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
    }
    
    .nav-links {
        gap: 20px;
    }
    
    .gradient-title {
        font-size: 32px;
    }
    
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 16px;
    }
}


/* ========== 骨架屏样式 ========== */
.skeleton-card {
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-card) 25%,
        var(--bg-elevated) 50%,
        var(--bg-card) 75%
    );
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

.skeleton-text {
    height: 20px;
    width: 80%;
    background: linear-gradient(
        90deg,
        var(--bg-card) 25%,
        var(--bg-elevated) 50%,
        var(--bg-card) 75%
    );
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: 4px;
    margin-bottom: 8px;
}

.skeleton-text.small {
    width: 60%;
    height: 16px;
}

.skeleton-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========== 用户菜单下拉 ========== */
.user-menu {
    position: relative;
}

.guest-menu {
    display: flex;
    gap: 12px;
}

.login-btn, .register-btn {
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s;
}

.login-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.login-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.register-btn {
    background: var(--accent-gradient);
    color: white;
    border: none;
}

.register-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px var(--glow-color);
}

.user-menu-dropdown {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    position: relative;
}

.username {
    color: var(--text-primary);
    font-weight: 500;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 18px;
}

.avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    width: 180px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    display: none;
    z-index: 1000;
    overflow: hidden;
}

.user-menu-dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    font-size: 14px;
}

.dropdown-content a:hover {
    background: var(--bg-elevated);
    color: var(--accent-primary);
}

/* ========== 播放列表弹窗 ========== */
.playlist-modal {
    display: none;
    position: fixed;
    bottom: 100px;
    right: 40px;
    width: 320px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    z-index: 2000;
    animation: slideUp 0.3s ease;
}

.playlist-modal.active {
    display: block;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.playlist-modal-content {
    max-height: 400px;
    display: flex;
    flex-direction: column;
}

.playlist-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.playlist-modal-header h3 {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
}

.close-btn:hover {
    color: var(--accent-primary);
}

.playlist-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
    max-height: 300px;
}

.empty-queue {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

.queue-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.queue-item:hover {
    background: var(--bg-elevated);
}

.queue-item.playing {
    background: rgba(139, 92, 246, 0.1);
    border-left: 3px solid var(--accent-primary);
}

.queue-item img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.queue-info {
    flex: 1;
}

.queue-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.queue-artist {
    font-size: 12px;
    color: var(--text-secondary);
}

.queue-remove {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
}

.queue-remove:hover {
    color: #ef4444;
}

.playlist-modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-secondary);
}

.clear-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s;
}

.clear-btn:hover {
    color: #ef4444;
}

/* ========== Toast 提示 ========== */
.toast-container {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    padding: 12px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 40px;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    animation: toastIn 0.3s ease;
    pointer-events: auto;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    gap: 8px;
}

.toast.success {
    border-color: #10b981;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.toast.error {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.toast.warning {
    border-color: #f59e0b;
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.toast.info {
    border-color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-primary);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .guest-menu {
        gap: 8px;
    }
    
    .login-btn, .register-btn {
        padding: 6px 16px;
        font-size: 13px;
    }
    
    .playlist-modal {
        right: 20px;
        width: 280px;
    }
    
    .toast {
        max-width: 90%;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

/* 在文件末尾添加 */

/* 图片加载动画 */
.image-loading {
    position: relative;
    background: linear-gradient(90deg, 
        var(--bg-card) 25%, 
        var(--bg-elevated) 50%, 
        var(--bg-card) 75%
    );
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

.image-loaded {
    animation: fadeIn 0.3s ease;
}

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

/* 图片错误占位 */
.image-error {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #8B5CF6, #EC4899);
    color: white;
    font-size: 24px;
    font-weight: 600;
}

.image-error.small {
    font-size: 16px;
}

.image-error.large {
    font-size: 48px;
}

/* 图片容器 */
.image-container {
    position: relative;
    overflow: hidden;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.image-container:hover img {
    transform: scale(1.05);
}

/* ========== 播放器独立样式 - 完全隔离 ========== */