/* ========== 音乐在线 - 现代化全新设计 ========== */

/* ===== 主题变量系统 ===== */
:root {
    /* 主色调 */
    --primary: #c10d29;
    --primary-light: #d61f35;
    --primary-dark: #9a0924;
    --primary-gradient: linear-gradient(135deg, #c10d29 0%, #e91e63 100%);
    
    /* 深色模式 */
    --bg: #0a0a0a;
    --bg-surface: #121212;
    --bg-card: #1a1a1a;
    --bg-card-hover: #222222;
    --bg-elevated: #252525;
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    
    /* 边框和分割线 */
    --border: #2a2a2a;
    --border-light: #333333;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(193, 13, 41, 0.3);
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.35s ease;
    
    /* Z-index */
    --z-header: 100;
    --z-player: 9999;
    --z-modal: 10000;
}

[data-theme="light"] {
    --bg: #f8f9fa;
    --bg-surface: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f5f5f5;
    --bg-elevated: #f0f0f0;
    
    --text-primary: #1a1a1a;
    --text-secondary: #555555;
    --text-muted: #999999;
    
    --border: #e5e5e5;
    --border-light: #f0f0f0;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px rgba(193, 13, 41, 0.15);
}

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 15px;
    padding-bottom: 100px;
    min-height: 100vh;
    -webkit-tap-highlight-color: transparent;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-light);
}

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

button {
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
    font-size: inherit;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ===== 布局容器 ===== */
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.container-full {
    max-width: none;
}

main.container {
    padding-top: var(--spacing-lg);
    padding-bottom: 120px;
    min-height: calc(100vh - 200px);
}

/* ===== Header - 现代化设计 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    background: var(--bg-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px var(--spacing-md);
    max-width: 1440px;
    margin: 0 auto;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 800;
    font-size: 1.4rem;
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span {
    font-size: 1.5rem;
}

.search-bar-wrapper {
    flex: 1;
    max-width: 520px;
    margin: 0 var(--spacing-xl);
}

.search-form-big {
    display: flex;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.search-form-big:focus-within {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.search-form-big input {
    flex: 1;
    padding: 12px var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
}

.search-form-big input::placeholder {
    color: var(--text-muted);
}

.search-form-big button {
    padding: 12px 24px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.search-form-big button:hover {
    transform: scale(1.05);
}

.header-right-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.btn-login {
    padding: 10px 24px;
    background: var(--primary-gradient);
    color: #fff;
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 14px rgba(193, 13, 41, 0.35);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(193, 13, 41, 0.5);
}

.user-menu {
    position: relative;
}

.user-name {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-name:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 1000;
    overflow: hidden;
    animation: dropdownFadeIn 0.2s ease;
    margin-top: 4px;
}

@keyframes dropdownFadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.user-menu {
    padding-bottom: 8px;
}

.user-dropdown a {
    display: block;
    padding: 12px var(--spacing-md);
    color: var(--text-secondary);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.user-dropdown a:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    padding-left: calc(var(--spacing-md) + 4px);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

/* ===== Footer ===== */
.site-footer {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.footer-inner {
    max-width: 1440px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.88rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* ===== Hero 轮播区 ===== */
.hero-wrapper {
    position: relative;
    padding: var(--spacing-lg) 0;
    overflow: hidden;
}

.hero-scroll-container {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 8px;
}

.hero-scroll-container::-webkit-scrollbar {
    display: none;
}

.hero-card {
    flex-shrink: 0;
    width: 320px;
    height: 180px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.hero-card:hover {
    transform: scale(1.04);
}

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

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

.hero-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px var(--spacing-md);
    background: linear-gradient(transparent, rgba(0,0,0,0.9));
}

.hero-name {
    display: block;
    font-weight: 700;
    color: #fff;
    font-size: 1.2rem;
    margin-bottom: 4px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.hero-artist {
    display: block;
    color: rgba(255,255,255,0.85);
    font-size: 0.9rem;
}

.hero-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: 6px 12px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    backdrop-filter: blur(4px);
}

.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border: none;
    font-size: 1.6rem;
    cursor: pointer;
    z-index: 10;
    opacity: 0;
    transition: all var(--transition-fast);
    backdrop-filter: blur(4px);
}

.hero-wrapper:hover .hero-arrow {
    opacity: 1;
}

.hero-arrow:hover {
    background: rgba(0,0,0,0.8);
    transform: translateY(-50%) scale(1.1);
}

.hero-arrow-left {
    left: 0;
}

.hero-arrow-right {
    right: 0;
}

/* ===== 热门歌手 ===== */
.artist-section {
    padding: var(--spacing-lg) 0;
}

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

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.3px;
}

.section-more {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.artist-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.artist-chip {
    padding: 10px 22px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.92rem;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.artist-chip:hover {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* ===== 歌曲网格 ===== */
.song-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-md);
}

.song-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.song-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.card-img-wrapper {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

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

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

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    opacity: 0;
    transition: opacity var(--transition-normal);
    backdrop-filter: blur(2px);
}

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

.overlay-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    color: var(--primary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.overlay-btn:hover {
    transform: scale(1.15);
    background: #fff;
}

.overlay-btn.fav-btn:hover {
    color: #f5a623;
}

.overlay-btn.download-btn:hover {
    color: #22c55e;
}

.rank-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    backdrop-filter: blur(2px);
}

.song-info {
    padding: var(--spacing-sm) var(--spacing-md);
}

.song-name {
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    margin-bottom: 2px;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.song-artist {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== 排行榜 ===== */
.chart-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.chart-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.chart-tab {
    padding: 11px 24px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.chart-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.chart-tab.active {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(193, 13, 41, 0.35);
}

.chart-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.chart-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.chart-item:hover {
    background: var(--bg-card-hover);
    margin-left: -8px;
    margin-right: -8px;
    padding-left: 8px;
    padding-right: 8px;
    border-radius: var(--radius-md);
}

.chart-rank {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 1rem;
    flex-shrink: 0;
}

.chart-item.top3 .chart-rank {
    background: var(--primary-gradient);
    color: #fff;
    box-shadow: 0 2px 8px rgba(193, 13, 41, 0.4);
}

.chart-cover {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
}

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

.chart-info {
    flex: 1;
    min-width: 0;
}

.chart-name {
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    margin-bottom: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chart-artist {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chart-trend {
    color: #22c55e;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
}

/* ===== 弹窗系统 ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: blur(4px);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 440px;
    width: 90%;
    position: relative;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal-box {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--primary);
}

.modal-panel {
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.modal-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    margin-bottom: 8px;
    letter-spacing: -0.3px;
}

.modal-header p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.95rem;
}

.input-group {
    position: relative;
    margin-bottom: var(--spacing-md);
}

.input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
}

.input-group input {
    width: 100%;
    padding: 14px var(--spacing-md) 14px 48px;
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.input-group input::placeholder {
    color: var(--text-muted);
}

.input-tip {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #ef4444;
    font-size: 0.85rem;
    display: none;
}

.btn-auth {
    width: 100%;
    padding: 14px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 14px rgba(193,13,41,0.35);
}

.btn-auth:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(193,13,41,0.5);
}

.btn-social {
    display: block;
    width: 100%;
    padding: 13px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-social:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
}

.modal-divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.modal-divider::before,
.modal-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.modal-links {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
}

.modal-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.modal-links a:hover {
    color: var(--primary);
}

/* ===== 警告框 ===== */
.alert {
    padding: 14px var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    font-weight: 500;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ===== 分页样式 ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
}

.pagination a {
    padding: 10px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pagination a:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: var(--primary);
}

.pagination a.active {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(193, 13, 41, 0.3);
}

/* ===== 搜索页面 ===== */
.search-page {
    padding-top: var(--spacing-lg);
}

.search-bar {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.search-bar input {
    flex: 1;
    padding: 14px var(--spacing-lg);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.search-bar button {
    padding: 14px 32px;
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 14px rgba(193,13,41,0.35);
}

.search-bar button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(193,13,41,0.5);
}

.search-filters {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-tag {
    padding: 10px 22px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-tag.active {
    background: var(--primary-gradient);
    color: #fff;
    border-color: transparent;
}

/* ===== 响应式布局 ===== */
@media (max-width: 1200px) {
    .song-grid {
        grid-template-columns: repeat(5, 1fr);
    }
    
    .hero-card {
        width: 280px;
        height: 160px;
    }
}

@media (max-width: 1024px) {
    .container, main.container {
        padding: 0 var(--spacing-sm);
    }
    
    .header-inner {
        padding: 10px var(--spacing-sm);
    }
    
    .search-bar-wrapper {
        max-width: 400px;
        margin: 0 var(--spacing-lg);
    }
    
    .hero-card {
        width: 260px;
        height: 150px;
    }
}

@media (max-width: 768px) {
    .search-bar-wrapper {
        display: none;
    }
    
    .song-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }
    
    .hero-card {
        width: 220px;
        height: 125px;
    }
    
    .hero-info {
        padding: 16px var(--spacing-sm);
    }
    
    .hero-name {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
    
    .artist-chip {
        padding: 8px 16px;
        font-size: 0.88rem;
    }
    
    .chart-section {
        padding: var(--spacing-lg);
    }
    
    .chart-tab {
        padding: 8px 16px;
        font-size: 0.88rem;
    }
    
    .chart-rank {
        width: 34px;
        height: 34px;
        font-size: 0.9rem;
    }
    
    .chart-cover {
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .song-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .hero-card {
        width: 180px;
        height: 100px;
    }
    
    .hero-info {
        padding: 12px var(--spacing-sm);
    }
    
    .hero-name {
        font-size: 0.9rem;
    }
    
    .hero-artist {
        font-size: 0.78rem;
    }
    
    .hero-badge {
        padding: 4px 8px;
        font-size: 0.68rem;
    }
    
    .section-title {
        font-size: 1.2rem;
    }
    
    .artist-grid {
        gap: 8px;
    }
    
    .artist-chip {
        padding: 7px 14px;
        font-size: 0.82rem;
    }
    
    .chart-section {
        padding: var(--spacing-md);
    }
    
    .chart-tab {
        padding: 7px 14px;
        font-size: 0.82rem;
    }
    
    .chart-item {
        gap: var(--spacing-sm);
        padding: 12px 0;
    }
    
    .chart-rank {
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
    }
    
    .chart-cover {
        width: 40px;
        height: 40px;
    }
    
    .chart-trend {
        font-size: 0.8rem;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .btn-login {
        padding: 8px 16px;
        font-size: 0.88rem;
    }
    
    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }
    
    .modal-box {
        padding: var(--spacing-lg);
        width: 92%;
    }
    
    .input-group input {
        padding: 12px var(--spacing-sm) 12px 44px;
    }
    
    .btn-auth {
        padding: 12px;
    }
    
    .pagination a {
        padding: 8px 14px;
        font-size: 0.88rem;
    }
}

/* ===== 后台管理旧类名兼容样式 ===== */
.table-wrap {
    overflow-x: auto;
    margin-bottom: var(--spacing-lg);
}

.table-wrap table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.table-wrap th {
    background: var(--bg-elevated);
    color: var(--text-primary);
    font-weight: 600;
    padding: var(--spacing-md);
    text-align: left;
    font-size: 0.88rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.table-wrap td {
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-light);
}

.table-wrap tr:hover td {
    background: var(--bg-card-hover);
}

.table-wrap tr:last-child td {
    border-bottom: none;
}

.btn-sm {
    padding: 6px 14px;
    border-radius: var(--radius-md);
    font-size: 0.82rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

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

.btn-sm.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-sm.btn-danger:hover {
    background: rgba(239, 68, 68, 0.25);
}

.message-box {
    padding: 14px var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    font-weight: 500;
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--bg-elevated);
    color: var(--text-secondary);
}

.edit-row {
    background: rgba(193, 13, 41, 0.05);
}

.edit-row td {
    padding: var(--spacing-lg);
}

.edit-form-inline {
    margin-top: var(--spacing-md);
}

.edit-form-inline form {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.edit-form-inline input {
    padding: 10px var(--spacing-md);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 0.9rem;
    min-width: 150px;
}

.edit-form-inline input:focus {
    outline: none;
    border-color: var(--primary);
}