/* ==================== 全局样式 ==================== */
:root {
    /* 主色调 */
    --primary-dark: #1E1B4B;
    --secondary-dark: #24243E;
    --bg-dark: #121212;
    --bg-secondary: #1A1A1A;
    --bg-tertiary: #2A2A2A;
    
    /* 辅助色 */
    --neon-pink: #FF2E63;
    --neon-blue: #00F5D4;
    --neon-purple: #8B5CF6;
    
    /* 中性色 */
    --gray-100: #F5F5F5;
    --gray-200: #E5E5E5;
    --gray-300: #D4D4D4;
    --gray-400: #A3A3A3;
    --gray-500: #888888;
    --gray-600: #525252;
    --gray-700: #3A3A3A;
    --gray-800: #2A2A2A;
    --gray-900: #1A1A1A;
    
    /* 文本颜色 */
    --text-primary: #FFFFFF;
    --text-secondary: #D1D5DB;
    --text-tertiary: #9CA3AF;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --shadow-neon: 0 0 20px rgba(255, 46, 99, 0.5);
    
    /* 过渡 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

img {
    max-width: 100%;
    display: block;
}

/* ==================== 容器 ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(18, 18, 20, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 1000;
    height: 80px;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.5rem;
    font-weight: 700;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
    padding: var(--spacing-sm) 0;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-blue));
}

/* 搜索框 */
.nav-center {
    flex: 1;
    max-width: 600px;
    margin: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
}

.search-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    height: 48px;
}

.search-container input {
    width: 100%;
    height: 100%;
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    padding: 0 46px 0 3rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    box-sizing: border-box;
}

.search-container input:focus {
    outline: none;
    border-color: var(--neon-blue);
    box-shadow: 0 0 0 3px rgba(0, 245, 212, 0.1);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
    z-index: 2;
}

.search-button {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    border: none;
    border-radius: var(--radius-full);
    width: 40px;
    height: 40px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    z-index: 3; /* 确保按钮在最上层 */
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

.search-button:hover {
    box-shadow: 0 4px 15px rgba(255, 46, 99, 0.4);
    filter: brightness(1.1);
}

.search-button svg {
    width: 18px;
    height: 18px;
    color: white;
    stroke: white;
}

.search-suggestions {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    max-height: 400px;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    z-index: 100;
}

.suggestion-item {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.suggestion-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(4px);
}

.suggestion-item img {
    flex-shrink: 0;
}

.search-suggestions::-webkit-scrollbar {
    width: 6px;
}

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

.search-suggestions::-webkit-scrollbar-thumb {
    background: var(--gray-600);
    border-radius: 3px;
}

.search-suggestions::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* 用户菜单 */
.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-menu {
    position: relative;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 2px solid transparent;
    transition: border-color var(--transition-fast);
}

.user-avatar:hover {
    border-color: var(--neon-blue);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    min-width: 200px;
    box-shadow: var(--shadow-xl);
}

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

.user-dropdown a {
    display: block;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.user-dropdown a:hover {
    background: var(--bg-tertiary);
}

/* ==================== 按钮 ==================== */
.btn {
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    color: white;
    box-shadow: 0 4px 15px rgba(255, 46, 99, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 46, 99, 0.4);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ==================== Hero区域 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--neon-pink);
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--neon-blue);
    bottom: -150px;
    right: -50px;
    animation-delay: 7s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: var(--neon-purple);
    top: 50%;
    left: 50%;
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, -50px) scale(1.1); }
    66% { transform: translate(-50px, 50px) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, #FFFFFF, var(--neon-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
}

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

/* ==================== 内容区域 ==================== */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
}

.section-more {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.section-more:hover {
    color: var(--neon-blue);
}

/* ==================== 卡片网格 ==================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--spacing-xl);
}

.music-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.music-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(255, 255, 255, 0.1);
}

.card-cover {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    aspect-ratio: 1;
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.card-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.play-button {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: transform var(--transition-fast);
}

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

.card-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.card-subtitle {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ==================== 排行榜 ==================== */
.tab-group {
    display: flex;
    gap: var(--spacing-md);
}

.tab-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    border-color: transparent;
}

.toplist-container {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.toplist-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
    cursor: pointer;
}

.toplist-item:hover {
    background: var(--bg-tertiary);
}

.toplist-rank {
    font-size: 1.5rem;
    font-weight: 700;
    width: 40px;
    text-align: center;
    color: var(--text-tertiary);
}

.toplist-item:nth-child(1) .toplist-rank,
.toplist-item:nth-child(2) .toplist-rank,
.toplist-item:nth-child(3) .toplist-rank {
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.toplist-cover {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.toplist-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.toplist-info {
    flex: 1;
}

.toplist-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.toplist-artist {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.toplist-actions {
    display: flex;
    gap: var(--spacing-md);
}

.action-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.action-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

/* ==================== 音乐播放器 ==================== */
.music-player {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg) 0;
    z-index: 999;
}

.player-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.player-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
}

.player-cover {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.player-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cover-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.player-info {
    flex: 1;
}

.player-song-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.player-artist {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.player-favorite {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.player-favorite:hover,
.player-favorite.active {
    color: var(--neon-pink);
}

.player-center {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.player-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

.control-btn {
    color: var(--text-primary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    color: var(--neon-blue);
    transform: scale(1.1);
}

.control-play {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    border-radius: var(--radius-full);
}

.control-play:hover {
    box-shadow: var(--shadow-neon);
}

.player-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-time {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    min-width: 40px;
}

.progress-bar {
    position: relative;
    flex: 1;
    height: 4px;
}

.progress-bar-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--gray-700);
    border-radius: var(--radius-full);
}

.progress-bar-fill {
    position: absolute;
    height: 100%;
    background: linear-gradient(90deg, var(--neon-pink), var(--neon-blue));
    border-radius: var(--radius-full);
    width: 0%;
    transition: width 0.1s linear;
}

.progress-slider {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.player-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 200px;
    justify-content: flex-end;
}

.volume-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.volume-slider {
    width: 100px;
    height: 4px;
    -webkit-appearance: none;
    background: var(--gray-700);
    border-radius: var(--radius-full);
    outline: none;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: var(--neon-blue);
    border-radius: 50%;
    cursor: pointer;
}

/* ==================== 骨架屏 ==================== */
.skeleton-card,
.skeleton-list {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-lg);
    height: 300px;
}

.skeleton-list {
    height: 500px;
}

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-center {
        margin: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .card-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-md);
    }
    
    .player-container {
        flex-wrap: wrap;
    }
    
    .player-left {
        min-width: auto;
    }
    
    .player-right {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .navbar {
        height: 70px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================== 排行榜Top3样式 ==================== */
.toplist-rank-top {
    background: linear-gradient(135deg, var(--neon-pink), var(--neon-purple));
    color: white;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(255, 46, 99, 0.3);
}

/* ==================== 新歌卡片信息区域 ==================== */
.card-info {
    cursor: pointer;
    transition: all var(--transition-normal);
}

.card-info:hover .card-title {
    color: var(--neon-pink);
}

.card-info:hover .card-subtitle {
    color: var(--text-primary);
}

/* ==================== 排行榜信息区域 ==================== */
.toplist-info {
    cursor: pointer;
    transition: all var(--transition-normal);
}

.toplist-info:hover .toplist-title {
    color: var(--neon-pink);
}

.toplist-info:hover .toplist-artist {
    color: var(--text-primary);
}