/* ========================================
   API平台 - 现代化主题样式
   ======================================== */

/* CSS变量定义 */
:root {
    /* 主色调 */
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #4338ca;
    
    /* 中性色 */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* 功能色 */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-hero: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 过渡 */
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--gray-50);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

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

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

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

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

/* ========================================
   布局容器
   ======================================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

/* ========================================
   顶部导航
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.header-logo img {
    height: 32px;
    width: auto;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.header-nav a {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    padding: 8px 0;
    position: relative;
}

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

.header-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.header-nav a:hover::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-search {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
}

.header-search:hover {
    background: var(--gray-200);
}

.header-search svg {
    width: 18px;
    height: 18px;
    color: var(--gray-400);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    padding: 8px;
}

@media (max-width: 768px) {
    .header-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
}

/* ========================================
   按钮组件
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-outline {
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
}

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

.btn-ghost {
    color: var(--gray-600);
}

.btn-ghost:hover {
    background: var(--gray-100);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

/* ========================================
   卡片组件
   ======================================== */
.card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-body {
    padding: 24px;
}

/* ========================================
   表单组件
   ======================================== */
.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: white;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 40px;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* ========================================
   标签组件
   ======================================== */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: var(--radius-full);
    background: var(--gray-100);
    color: var(--gray-600);
}

.tag-primary {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary);
}

.tag-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.tag-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.tag-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

/* ========================================
   首页Hero区域
   ======================================== */
.hero {
    padding: 120px 0 80px;
    background: var(--gradient-hero);
    text-align: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto 40px;
}

/* 搜索框 */
.search-box {
    max-width: 640px;
    margin: 0 auto 32px;
    display: flex;
    background: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.search-box input {
    flex: 1;
    padding: 16px 24px;
    border: none;
    font-size: 16px;
}

.search-box input:focus {
    outline: none;
}

.search-box button {
    padding: 16px 32px;
    background: var(--primary);
    color: white;
    font-weight: 500;
}

.search-box button:hover {
    background: var(--primary-dark);
}

/* 热门搜索 */
.hot-tags {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}

.hot-tags span {
    color: var(--gray-500);
    font-size: 14px;
}

.hot-tags a {
    padding: 6px 14px;
    background: white;
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--gray-600);
    box-shadow: var(--shadow-sm);
}

.hot-tags a:hover {
    background: var(--primary);
    color: white;
}

/* ========================================
   统计数据
   ======================================== */
.stats {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
    margin-top: -40px;
    position: relative;
    z-index: 10;
}

.stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius);
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 13px;
    color: var(--gray-500);
}

@media (max-width: 1024px) {
    .stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 640px) {
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-title {
        font-size: 32px;
    }
}

/* ========================================
   API列表
   ======================================== */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.section-desc {
    font-size: 16px;
    color: var(--gray-500);
}

.api-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.api-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 24px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

.api-card-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.api-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--gray-100);
}

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

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

.api-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.api-desc {
    font-size: 13px;
    color: var(--gray-500);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.api-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid var(--gray-100);
}

.api-calls {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--gray-500);
}

.api-price {
    font-size: 14px;
    font-weight: 600;
}

.api-price.free {
    color: var(--success);
}

.api-price.paid {
    color: var(--warning);
}

.api-price.points {
    color: var(--info);
}

@media (max-width: 1024px) {
    .api-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .api-grid {
        grid-template-columns: 1fr;
    }
}


/* ========================================
   步骤流程
   ======================================== */
.steps-section {
    background: white;
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 24px;
}

.step-item {
    flex: 1;
    max-width: 280px;
    text-align: center;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.step-item:hover {
    background: var(--gray-50);
}

.step-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
}

.step-icon img {
    width: 40px;
    height: 40px;
}

.step-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.step-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.6;
}

.step-arrow {
    display: flex;
    align-items: center;
    padding-top: 60px;
    color: var(--gray-300);
}

@media (max-width: 768px) {
    .steps {
        flex-direction: column;
        align-items: center;
    }
    
    .step-arrow {
        transform: rotate(90deg);
        padding: 0;
    }
}

/* ========================================
   商户卡片
   ======================================== */
.merchant-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.merchant-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: var(--transition);
}

.merchant-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.merchant-banner {
    height: 100px;
    background: var(--gradient-primary);
    position: relative;
}

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

.merchant-body {
    padding: 24px;
    text-align: center;
    position: relative;
}

.merchant-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 3px solid white;
    margin: -56px auto 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
}

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

.merchant-badge {
    position: absolute;
    bottom: 0;
    right: -4px;
    width: 20px;
    height: 20px;
}

.merchant-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.merchant-bio {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 16px;
    padding: 8px 12px;
    background: var(--gray-50);
    border-radius: var(--radius);
}

.merchant-stats {
    display: flex;
    justify-content: space-around;
    padding-top: 16px;
    border-top: 1px solid var(--gray-100);
}

.merchant-stat {
    text-align: center;
}

.merchant-stat-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
}

.merchant-stat-label {
    font-size: 12px;
    color: var(--gray-500);
}

@media (max-width: 1024px) {
    .merchant-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .merchant-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    height: 32px;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 24px;
}

.footer-qr {
    display: flex;
    gap: 16px;
}

.footer-qr img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
}

.footer-title {
    font-size: 14px;
    font-weight: 600;
    color: white;
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: var(--gray-400);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright {
    font-size: 13px;
}

.footer-beian {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer-beian a {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
}

.footer-beian img {
    width: 16px;
    height: 16px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ========================================
   登录弹窗
   ======================================== */
.login-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-modal.active {
    display: flex;
}

.login-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.login-box {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: white;
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-xl);
}

.login-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    color: var(--gray-400);
}

.login-close:hover {
    background: var(--gray-100);
    color: var(--gray-600);
}

.login-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: 8px;
}

.login-subtitle {
    font-size: 14px;
    color: var(--gray-500);
    text-align: center;
    margin-bottom: 32px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.login-input-group {
    position: relative;
}

.login-input-group svg {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--gray-400);
}

.login-input-group input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
}

.login-input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.login-actions {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
}

.login-actions a {
    color: var(--primary);
}

.login-actions a:hover {
    text-decoration: underline;
}

.login-submit {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: white;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    margin-top: 8px;
}

.login-submit:hover {
    background: var(--primary-dark);
}

/* ========================================
   API详情页
   ======================================== */
.page-content {
    padding-top: 88px;
    min-height: 100vh;
}

.api-detail {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    padding: 24px 0;
}

.api-detail-main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.api-detail-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* API信息卡片 */
.api-info-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 24px;
}

.api-info-header {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.api-info-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
}

.api-info-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.api-info-content {
    flex: 1;
}

.api-info-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.api-info-desc {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 12px;
}

.api-info-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.api-info-actions {
    display: flex;
    gap: 12px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-100);
}

/* 文档标签页 */
.doc-tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--gray-100);
    border-radius: var(--radius);
    margin-bottom: 24px;
}

.doc-tab {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.doc-tab:hover {
    color: var(--gray-900);
}

.doc-tab.active {
    background: white;
    color: var(--gray-900);
    box-shadow: var(--shadow-sm);
}

/* 代码示例 */
.code-langs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.code-lang {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.code-lang:hover {
    border-color: var(--primary);
}

.code-lang.active {
    background: rgba(79, 70, 229, 0.05);
    border-color: var(--primary);
}

.code-lang img {
    width: 32px;
    height: 32px;
}

.code-lang span {
    font-size: 13px;
    color: var(--gray-600);
}

.code-block {
    background: var(--gray-900);
    border-radius: var(--radius);
    overflow: hidden;
}

.code-block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--gray-800);
}

.code-block-title {
    font-size: 13px;
    color: var(--gray-400);
}

.code-block-copy {
    font-size: 13px;
    color: var(--gray-400);
}

.code-block-copy:hover {
    color: white;
}

.code-block pre {
    padding: 16px;
    margin: 0;
    overflow-x: auto;
}

.code-block code {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: #e5e7eb;
}

@media (max-width: 1024px) {
    .api-detail {
        grid-template-columns: 1fr;
    }
    
    .code-langs {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

/* ========================================
   用户中心
   ======================================== */
.user-layout {
    display: flex;
    min-height: 100vh;
}

.user-sidebar {
    width: 240px;
    background: white;
    border-right: 1px solid var(--gray-200);
    padding: 24px 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
}

.user-sidebar-logo {
    padding: 0 24px 24px;
    border-bottom: 1px solid var(--gray-100);
    margin-bottom: 16px;
}

.user-sidebar-logo img {
    height: 28px;
}

.user-nav {
    padding: 0 12px;
}

.user-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    font-size: 14px;
    color: var(--gray-600);
    border-radius: var(--radius);
    margin-bottom: 4px;
    transition: var(--transition);
}

.user-nav-item:hover {
    background: var(--gray-50);
    color: var(--gray-900);
}

.user-nav-item.active {
    background: rgba(79, 70, 229, 0.1);
    color: var(--primary);
    font-weight: 500;
}

.user-nav-item svg {
    width: 18px;
    height: 18px;
}

.user-main {
    flex: 1;
    margin-left: 240px;
    padding: 24px;
    background: var(--gray-50);
}

.user-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.user-page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
}

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

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
}

/* 数据卡片 */
.data-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.data-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--gray-200);
}

.data-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-100);
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.data-card-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.data-card-label {
    font-size: 14px;
    color: var(--gray-500);
}

@media (max-width: 1024px) {
    .data-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .user-sidebar {
        display: none;
    }
    
    .user-main {
        margin-left: 0;
    }
}

/* ========================================
   VIP会员页
   ======================================== */
.vip-hero {
    background: var(--gradient-primary);
    padding: 100px 0 60px;
    text-align: center;
    color: white;
}

.vip-hero-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 12px;
}

.vip-hero-desc {
    font-size: 18px;
    opacity: 0.9;
}

.vip-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: -40px;
    position: relative;
    z-index: 10;
}

.vip-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.vip-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.vip-card-header {
    text-align: center;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-100);
    margin-bottom: 24px;
}

.vip-card-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.vip-card-desc {
    font-size: 14px;
    color: var(--gray-500);
}

.vip-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.vip-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--gray-600);
}

.vip-feature svg {
    width: 18px;
    height: 18px;
    color: var(--success);
    flex-shrink: 0;
}

.vip-card-action {
    width: 100%;
}

@media (max-width: 1024px) {
    .vip-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .vip-cards {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   新闻列表
   ======================================== */
.news-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 32px;
    padding: 24px 0;
}

.news-categories {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.news-category {
    padding: 12px 16px;
    font-size: 14px;
    color: var(--gray-600);
    border-radius: var(--radius);
    transition: var(--transition);
}

.news-category:hover {
    background: var(--gray-100);
}

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

.news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.news-item {
    display: flex;
    gap: 20px;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 20px;
    transition: var(--transition);
}

.news-item:hover {
    box-shadow: var(--shadow-md);
}

.news-image {
    width: 200px;
    height: 120px;
    border-radius: var(--radius);
    overflow: hidden;
    flex-shrink: 0;
}

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

.news-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.news-brief {
    font-size: 14px;
    color: var(--gray-500);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-time {
    font-size: 13px;
    color: var(--gray-400);
    margin-top: 12px;
}

@media (max-width: 768px) {
    .news-layout {
        grid-template-columns: 1fr;
    }
    
    .news-categories {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 8px;
    }
    
    .news-item {
        flex-direction: column;
    }
    
    .news-image {
        width: 100%;
        height: 180px;
    }
}

/* ========================================
   动画效果
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 数字滚动动画 */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 加载动画 */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========================================
   工具类
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }

.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }

.hidden { display: none; }
.block { display: block; }

/* 响应式隐藏 */
@media (max-width: 768px) {
    .hide-mobile { display: none !important; }
}

@media (min-width: 769px) {
    .hide-desktop { display: none !important; }
}