/* ========================================
   明亮橘黄动漫主题 CSS 框架
   浅色背景 + 橘黄主色 + 现代卡片布局
   ======================================== */

/* CSS 变量定义 - 明亮橘黄风格 */
:root {
    --primary: #FF8C00;
    --primary-glow: rgba(255, 140, 0, 0.3);
    --primary-light: #FFA500;
    --primary-dark: #E67E00;
    --secondary: #FF6B35;
    --secondary-glow: rgba(255, 107, 53, 0.3);
    --accent: #FFD93D;
    --accent-glow: rgba(255, 217, 61, 0.3);
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;
    
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-card: #FFFFFF;
    --bg-card-hover: #FFF8F0;
    --bg-gradient: linear-gradient(135deg, #FFF8F0 0%, #FFFFFF 50%, #FFF5E6 100%);
    
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --text-muted: #9CA3AF;
    
    --border-color: #E5E7EB;
    --border-light: #F3F4F6;
    --border-glow: rgba(255, 140, 0, 0.3);
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 4px 20px rgba(255, 140, 0, 0.25);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    
    --font-sans: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --font-display: 'Orbitron', 'Noto Sans SC', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    background-image: 
        radial-gradient(ellipse at 0% 0%, rgba(255, 140, 0, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 100%, rgba(255, 217, 61, 0.05) 0%, transparent 50%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

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

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

/* ========================================
   容器和布局
   ======================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* Flexbox */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

/* Grid */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

@media (min-width: 640px) {
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .sm\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .lg\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
    .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .lg\:grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }
    .lg\:col-span-1 { grid-column: span 1 / span 1; }
    .lg\:col-span-2 { grid-column: span 2 / span 2; }
    .lg\:col-span-3 { grid-column: span 3 / span 3; }
    .lg\:col-span-4 { grid-column: span 4 / span 4; }
    .lg\:col-span-8 { grid-column: span 8 / span 8; }
}

@media (min-width: 1280px) {
    .xl\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
    .xl\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.navbar-logo-text {
    color: var(--primary);
    font-weight: 700;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

@media (max-width: 767px) {
    .navbar-menu {
        display: none;
    }
}

.navbar-link {
    padding: 0.5rem 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.navbar-link:hover {
    color: var(--primary);
    background: rgba(255, 140, 0, 0.1);
}

.navbar-link.active {
    color: var(--primary);
    background: rgba(255, 140, 0, 0.15);
}

.navbar-search {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

@media (max-width: 767px) {
    .navbar-search {
        display: none;
    }
}

.navbar-search i {
    color: var(--text-muted);
}

.navbar-search input {
    border: none;
    background: transparent;
    outline: none;
    font-size: 0.875rem;
    color: var(--text-primary);
    width: 160px;
}

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

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

@media (max-width: 767px) {
    .navbar-actions {
        display: none;
    }
}

.navbar-auth {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-auth-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.navbar-auth-btn i {
    font-size: 0.875rem;
}

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

.navbar-auth-btn.login:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(255, 140, 0, 0.05);
}

.navbar-auth-btn.register {
    color: white;
    background: var(--primary);
    border: none;
}

.navbar-auth-btn.register:hover {
    background: var(--primary-dark);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-user-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: rgba(255, 140, 0, 0.1);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.navbar-user-btn:hover {
    color: var(--primary);
    background: rgba(255, 140, 0, 0.15);
}

.navbar-user-btn i {
    font-size: 1rem;
    color: var(--primary);
}

.navbar-logout {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.navbar-logout:hover {
    color: var(--danger);
}

.mobile-menu-divider {
    height: 1px;
    background: var(--border-light);
    margin: 0.5rem 0;
}

.mobile-menu a i {
    margin-right: 0.5rem;
    width: 16px;
    text-align: center;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
}

@media (max-width: 767px) {
    .mobile-menu-btn {
        display: flex;
    }
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    padding: 1rem;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-light);
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-md);
}

.mobile-menu a:hover {
    background: rgba(255, 140, 0, 0.1);
    color: var(--primary);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero-section {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

@media (min-width: 768px) {
    .hero-section {
        min-height: 600px;
    }
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
}

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

.hero-content {
    text-align: center;
    color: white;
    padding: 2rem 0;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    opacity: 0.95;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

/* ========================================
   卡片组件
   ======================================== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(255, 140, 0, 0.3);
}

/* 作品卡片 */
.work-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.work-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary);
}

.work-card-image {
    position: relative;
    aspect-ratio: 3/4;
    overflow: hidden;
    background: var(--bg-secondary);
}

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

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

.work-card-badge {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    padding: 0.25rem 0.75rem;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-md);
}

.work-card-content {
    padding: 1rem;
}

.work-card-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.work-card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.work-card-meta i {
    color: var(--primary);
    margin-right: 0.25rem;
}

.work-card-desc {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.work-card-action {
    display: block;
    padding: 0 1rem 1rem;
}

/* ========================================
   按钮 - 纯扁平风格
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
}

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn-secondary:hover {
    background: #e55a2b;
    color: white;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: rgba(255, 140, 0, 0.1);
    color: var(--primary);
}

.btn-sm {
    padding: 0.375rem 1rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}

.w-full {
    width: 100%;
}

/* ========================================
   标签和徽章
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: rgba(255, 140, 0, 0.15);
    color: var(--primary);
}

.badge-secondary {
    background: rgba(255, 107, 53, 0.15);
    color: var(--secondary);
}

.badge-accent {
    background: rgba(255, 217, 61, 0.2);
    color: #B8860B;
}

/* ========================================
   表单元素
   ======================================== */
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(255, 140, 0, 0.15);
}

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

/* ========================================
   区块标题
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.section-title.text-gradient {
    color: var(--primary);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
}

/* ========================================
   分类标签页
   ======================================== */
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.category-tab {
    padding: 0.5rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.category-tab.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ========================================
   章节列表
   ======================================== */
.chapter-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chapter-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.chapter-item:hover {
    background: rgba(255, 140, 0, 0.1);
}

.chapter-title a {
    color: var(--text-primary);
    font-weight: 500;
}

.chapter-title a:hover {
    color: var(--primary);
}

.chapter-btn {
    padding: 0.375rem 1rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--primary);
    background: rgba(255, 140, 0, 0.1);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.chapter-btn:hover {
    background: var(--primary);
    color: white;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-brand {
    margin-bottom: 1rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.25rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    text-align: center;
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ========================================
   左侧导航布局 - 大幅度改版
   ======================================== */

/* 整体布局 - 左侧导航 + 右侧内容 */
body.layout-left-nav {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* 左侧导航容器 */
.sidebar-nav {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    background: var(--text-primary);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    overflow-y: auto;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

/* 侧边栏Logo区域 */
.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.sidebar-logo-icon {
    width: 42px;
    height: 42px;
    background: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.sidebar-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    white-space: nowrap;
}

/* 侧边栏用户区域 */
.sidebar-user {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sidebar-user-avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

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

.sidebar-user-name {
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-status {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.sidebar-user-status::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #10B981;
    border-radius: 50%;
}

/* 侧边栏登录按钮 */
.sidebar-auth {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    gap: 0.75rem;
}

.sidebar-auth-btn {
    flex: 1;
    padding: 0.625rem 1rem;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    transition: all 0.25s ease;
    text-decoration: none;
}

.sidebar-auth-btn.login {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.sidebar-auth-btn.login:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.sidebar-auth-btn.register {
    background: var(--primary);
    color: white;
    border: none;
}

.sidebar-auth-btn.register:hover {
    background: var(--primary-dark);
}

/* 侧边栏导航菜单 */
.sidebar-menu {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.sidebar-menu-title {
    padding: 0.5rem 1.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-menu-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1.5rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    cursor: pointer;
}

.sidebar-menu-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: white;
}

.sidebar-menu-item.active {
    background: rgba(255, 140, 0, 0.15);
    color: var(--primary);
    border-left-color: var(--primary);
}

.sidebar-menu-item i {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

.sidebar-menu-item span {
    font-size: 0.95rem;
    font-weight: 500;
}

/* 侧边栏底部 */
.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-footer-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

.sidebar-footer-link:hover {
    color: white;
}

/* 主内容区域 */
.main-wrapper {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 顶部搜索栏 */
.main-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    padding: 0.875rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.main-header-search {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.main-header-search input {
    width: 100%;
    padding: 0.625rem 1rem 0.625rem 2.75rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.9rem;
    background: var(--bg-secondary);
    transition: all 0.25s ease;
    outline: none;
}

.main-header-search input:focus {
    border-color: var(--primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(255, 140, 0, 0.1);
}

.main-header-search i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.main-header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.main-header-action {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.main-header-action:hover {
    background: rgba(255, 140, 0, 0.1);
    color: var(--primary);
}

/* 主内容区域 */
.main-content {
    flex: 1;
    padding: 2rem;
    background: var(--bg-primary);
}

/* 移动端侧边栏切换按钮 */
.mobile-sidebar-toggle {
    display: none;
    position: fixed;
    left: 1rem;
    top: 1rem;
    z-index: 1001;
    width: 44px;
    height: 44px;
    background: var(--primary);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
}

.mobile-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

/* 响应式布局 */
@media (max-width: 1024px) {
    .sidebar-nav {
        transform: translateX(-100%);
    }
    
    .sidebar-nav.open {
        transform: translateX(0);
    }
    
    .main-wrapper {
        margin-left: 0;
    }
    
    .mobile-sidebar-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .mobile-sidebar-overlay.show {
        display: block;
    }
    
    .main-header {
        padding-left: 4rem;
    }
}

@media (max-width: 640px) {
    .main-content {
        padding: 1rem;
    }
    
    .main-header {
        padding: 0.75rem 1rem 0.75rem 4rem;
    }
    
    .main-header-search {
        max-width: none;
    }
}

/* 首页Hero区域调整 */
.hero-section-left-nav {
    position: relative;
    min-height: 350px;
    display: flex;
    align-items: center;
    overflow: hidden;
    margin: -2rem -2rem 2rem -2rem;
    border-radius: 0;
    background: linear-gradient(135deg, #FF8C00 0%, #FF6B35 100%);
}

@media (min-width: 1025px) {
    .hero-section-left-nav {
        border-radius: 16px;
        margin: -2rem 0 2rem 0;
    }
}

.hero-bg-left-nav {
    display: none;
}

.hero-bg-left-nav::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.05);
}

.hero-content-left-nav {
    position: relative;
    z-index: 1;
    text-align: left;
    padding-left: 2rem;
}

.hero-content-left-nav .hero-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
}

.hero-content-left-nav .hero-subtitle {
    margin-left: 0;
    max-width: 500px;
}

/* 卡片网格调整 */
.works-grid-left-nav {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1.25rem;
}

@media (min-width: 768px) {
    .works-grid-left-nav {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

@media (min-width: 1280px) {
    .works-grid-left-nav {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

/* 修改原有的导航栏隐藏 */
.navbar {
    display: none;
}

/* ========================================
   订阅区域
   ======================================== */
.subscribe-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.subscribe-box {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.subscribe-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.subscribe-desc {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.subscribe-form {
    display: flex;
    gap: 0.75rem;
    max-width: 480px;
    margin: 0 auto;
}

@media (max-width: 639px) {
    .subscribe-form {
        flex-direction: column;
    }
}

.subscribe-form input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    outline: none;
    transition: all var(--transition-fast);
}

.subscribe-form input:focus {
    border-color: var(--primary);
}

/* ========================================
   面包屑导航
   ======================================== */
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--text-muted);
}

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

/* ========================================
   排行榜
   ======================================== */
.rank-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.rank-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.rank-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    color: var(--text-muted);
}

.rank-number.top-1 {
    background: #FFD700;
    color: white;
}

.rank-number.top-2 {
    background: #C0C0C0;
    color: white;
}

.rank-number.top-3 {
    background: #CD7F32;
    color: white;
}

.rank-cover {
    width: 48px;
    height: 64px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
}

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

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

.rank-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rank-meta {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ========================================
   搜索页面
   ======================================== */
.search-box {
    max-width: 600px;
    margin: 0 auto 2rem;
}

.search-input-wrapper {
    display: flex;
    gap: 0.75rem;
}

.search-input-wrapper input {
    flex: 1;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    outline: none;
    transition: all var(--transition-fast);
}

.search-input-wrapper input:focus {
    border-color: var(--primary);
}

.search-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
    justify-content: center;
}

.search-tag {
    padding: 0.375rem 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-tag:hover {
    color: var(--primary);
    background: rgba(255, 140, 0, 0.1);
}

/* ========================================
   关于页面
   ======================================== */
.about-hero {
    padding: 6rem 0;
    background: var(--primary);
    color: white;
    text-align: center;
}

.about-content {
    padding: 4rem 0;
}

.about-section {
    margin-bottom: 3rem;
}

.about-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.about-section h3 i {
    color: var(--primary);
}

.about-section p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   动画
   ======================================== */
.animate-fadeIn {
    animation: fadeIn 0.5s ease forwards;
}

.animate-fadeInUp {
    animation: fadeInUp 0.5s ease forwards;
}

.animate-slideInLeft {
    animation: slideInLeft 0.5s ease forwards;
}

.animate-slideInRight {
    animation: slideInRight 0.5s ease forwards;
}

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

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* ========================================
   间距工具类
   ======================================== */
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.pt-32 { padding-top: 8rem; }
.pb-6 { padding-bottom: 1.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-12 { margin-top: 3rem; }
.mr-2 { margin-right: 0.5rem; }
.mx-2 { margin-left: 0.5rem; margin-right: 0.5rem; }

/* ========================================
   文字工具类
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-white { color: white; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-6xl { font-size: 3.75rem; }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }

/* ========================================
   其他工具类
   ======================================== */
.overflow-hidden { overflow: hidden; }
.relative { position: relative; }
.absolute { position: absolute; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.rounded-full { border-radius: var(--radius-full); }
.rounded-lg { border-radius: var(--radius-lg); }
.object-cover { object-fit: cover; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-4 > * + * { margin-top: 1rem; }

/* ========================================
   响应式隐藏
   ======================================== */
@media (max-width: 639px) {
    .sm\:hidden { display: none; }
}

@media (max-width: 767px) {
    .md\:hidden { display: none; }
}

@media (max-width: 1023px) {
    .lg\:hidden { display: none; }
}

@media (min-width: 640px) {
    .sm\:block { display: block; }
    .sm\:flex { display: flex; }
}

@media (min-width: 768px) {
    .md\:block { display: block; }
    .md\:flex { display: flex; }
    .md\:w-1\/2 { width: 50%; }
}

@media (min-width: 1024px) {
    .lg\:block { display: block; }
    .lg\:flex { display: flex; }
}

/* ========================================
   加载动画
   ======================================== */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 骨架屏 */
.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-card-hover) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 1rem;
    margin-bottom: 0.5rem;
}

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: 1rem;
}

.skeleton-image {
    aspect-ratio: 3/4;
}

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