/* 基础变量 - 青春活力风格 */
:root {
    /* 主色调 - 明亮的蓝色 */
    --primary: #4d80e4;
    --primary-light: #7ea1ff;
    --primary-dark: #3060b8;
    --primary-rgb: 77, 128, 228; /* 添加RGB值 */
    
    /* 强调色 - 鲜活的粉色 */
    --accent: #ff6b8b;
    --accent-light: #ff9eaf;
    --accent-dark: #e04863;
    --accent-rgb: 255, 107, 139; /* 添加RGB值 */
    
    /* 背景色 */
    --light: #e8ecf5; /* 调暗了背景色，使其不那么刺眼 */
    --dark: #262a42;
    --dark-rgb: 38, 42, 66; /* 添加RGB值 */
    
    /* 灰度阶梯 - 带有蓝色调的灰色 */
    --gray-50: #e8ecf5; /* 与背景色保持一致 */
    --gray-100: #e7eeff;
    --gray-200: #d6e0fb;
    --gray-300: #c3d0f0;
    --gray-400: #a3b1d9;
    --gray-500: #7d8bb3;
    --gray-600: #5a678f;
    --gray-700: #414b6b;
    --gray-800: #2c334d;
    --gray-900: #1a1e2e;
    
    /* 添加所有灰度的RGB值 */
    --gray-50-rgb: 232, 236, 245;
    --gray-100-rgb: 231, 238, 255;
    --gray-200-rgb: 214, 224, 251;
    --gray-300-rgb: 195, 208, 240;
    --gray-400-rgb: 163, 177, 217;
    --gray-500-rgb: 125, 139, 179;
    --gray-600-rgb: 90, 103, 143;
    --gray-700-rgb: 65, 75, 107;
    --gray-800-rgb: 44, 51, 77;
    --gray-900-rgb: 26, 30, 46;
    
    /* 字体系统 - 现代活力字体 */
    --font: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    
    /* 阴影 - 柔和蓝色阴影 */
    --shadow-sm: 0 2px 5px rgba(77, 128, 228, 0.08);
    --shadow-md: 0 5px 10px rgba(77, 128, 228, 0.12);
    --shadow-lg: 0 10px 20px rgba(77, 128, 228, 0.15);
    --shadow-xl: 0 15px 30px rgba(77, 128, 228, 0.18);
    
    /* 圆角 - 现代感圆角 */
    --radius-sm: 5px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 间距 */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    /* 容器最大宽度 */
    --container-max: 1280px;
    
    /* 图片背景支持 */
    --overlay-light: rgba(255, 255, 255, 0.7);
    --overlay-dark: rgba(0, 0, 0, 0.4);
}

/* 重置样式 - 现代化 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    scroll-padding-top: 80px; /* 平滑滚动到锚点时的偏移量 */
}

/* 页面过渡效果 */
body {
    margin: 0;
    padding: 0;
    font-family: var(--font);
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--gray-700);
    background-color: var(--light);
    overflow-x: hidden;
    letter-spacing: -0.01em;
    opacity: 1;
    transition: opacity 0.3s ease;
}

body.page-transition {
    opacity: 0.8;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-normal);
    position: relative;
}

a:hover {
    color: var(--primary-dark);
}

/* 链接悬停效果 */
a.hover-effect:after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition-normal);
}

a.hover-effect:hover:after {
    width: 100%;
}

img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

img:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--gray-800);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-4);
    letter-spacing: -0.02em;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2.1rem;
}

h3 {
    font-size: 1.8rem;
}

/* 布局 - 现代网格系统 */
.container {
    width: 100%;
    max-width: var(--container-max);
    padding: 0 var(--spacing-6);
    margin: 0 auto;
    position: relative;
}

.container-sm {
    max-width: 1024px;
}

.container-xs {
    max-width: 768px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(-1 * var(--spacing-4));
    gap: var(--spacing-6);
}

.col {
    flex: 1 1 0;
    padding: 0 var(--spacing-4);
}

.col-2 {
    flex: 0 0 calc(50% - var(--spacing-6));
    max-width: calc(50% - var(--spacing-6));
    padding: 0 var(--spacing-4);
}

.col-3 {
    flex: 0 0 calc(33.333333% - var(--spacing-6));
    max-width: calc(33.333333% - var(--spacing-6));
    padding: 0 var(--spacing-4);
}

.col-4 {
    flex: 0 0 calc(25% - var(--spacing-6));
    max-width: calc(25% - var(--spacing-6));
    padding: 0 var(--spacing-4);
}

/* 网格布局 */
.grid {
    display: grid;
    gap: var(--spacing-6);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* 导航栏 - 简约扁平风格 */
.header {
    background-color: var(--light);
    box-shadow: none;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    padding: 0;
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
    position: relative;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    transition: var(--transition-normal);
    position: relative;
}

.logo span {
    background: linear-gradient(45deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo:hover {
    color: var(--primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    margin-left: var(--spacing-6);
}

.nav-link {
    color: var(--gray-700);
    font-weight: 500;
    font-size: 1.1rem;
    padding: var(--spacing-2) var(--spacing-3);
    position: relative;
    transition: var(--transition-normal);
    border-radius: var(--radius-md);
}

.nav-link.active {
    color: var(--primary);
    font-weight: 600;
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background-color: var(--gray-100);
}

/* 为所有导航链接添加底线占位，但默认透明 */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: var(--spacing-2);
    right: var(--spacing-2);
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    border-radius: 3px;
    opacity: 0;
    transform: scaleX(0.7);
}

/* 活动链接的底线样式 */
.nav-link.active::after {
    opacity: 1;
    transform: scaleX(1);
}

/* 移动导航触发器 */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    z-index: 2;
}

.mobile-nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--dark);
    margin: 5px 0;
    transition: var(--transition-normal);
}

/* 修改用户控件样式，更符合原始设计 */
.nav-actions {
    display: flex;
    align-items: center;
}

/* 登录按钮样式 */
.login-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 0.9rem;
    padding: 6px 10px;
    border-radius: 4px;
    transition: all 0.2s ease;
    background: transparent;
}

.login-btn:hover {
    background-color: rgba(var(--primary-rgb), 0.1);
    transform: none;
    box-shadow: none;
    color: var(--primary);
}

.login-btn i {
    font-size: 1rem;
}

/* 用户下拉菜单简化 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.dropdown-toggle:hover {
    background-color: rgba(var(--primary-rgb), 0.1);
}

.dropdown-toggle .avatar i {
    color: var(--primary);
    font-size: 1.5rem;
}

/* 简化下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 160px;
    background-color: white;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border: 1px solid rgba(0,0,0,0.08);
    padding: 5px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
    z-index: 1001;
    margin-top: 5px;
}

.dropdown:hover .dropdown-menu,
.dropdown-menu.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    padding: 8px 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-700);
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.dropdown-item i {
    font-size: 1rem;
}

.dropdown-item:hover {
    background-color: rgba(var(--primary-rgb), 0.05);
    color: var(--primary);
}

#logout-link {
    color: var(--gray-700);
}

#logout-link:hover {
    color: #e74c3c;
}

/* 移除多余的装饰效果 */
.dropdown-toggle::after {
    display: none;
}

.dropdown-item::before {
    display: none;
}

.login-btn::after {
    display: none;
}

#admin-link {
    color: var(--primary);
    border-bottom: 1px solid #f0f2f5;
    padding-bottom: 12px;
    margin-bottom: 4px;
}

/* 主区域 - 简约紧凑布局 */
.main-content {
    padding-top: 74px;
    position: relative;
}

/* 添加页面标题，替代之前的hero区域 */
.page-title-container {
    text-align: center;
    margin-bottom: var(--spacing-12);
    padding-top: var(--spacing-8);
}

.page-title {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--spacing-3);
    letter-spacing: -0.01em;
    position: relative;
    display: inline-block;
}

.page-title:after {
    content: '';
    display: block;
    width: 100%;
    height: 8px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    position: absolute;
    bottom: 5px;
    left: 0;
    z-index: -1;
    opacity: 0.3;
    border-radius: var(--radius-md);
}

.page-subtitle {
    font-size: 1.15rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
    font-weight: 400;
}

/* 英雄区 - 支持图片背景 */
.hero {
    padding: var(--spacing-16) 0;
    background: linear-gradient(165deg, rgba(250, 250, 252, 1) 0%, rgba(245, 245, 250, 1) 100%);
    margin-bottom: 0;
    position: relative;
    overflow: hidden;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 支持背景图片 */
.hero.has-bg-image {
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

/* 背景图片覆盖层 */
.hero.has-bg-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-light);
    z-index: 1;
}

/* 背景图片深色覆盖层 */
.hero.has-bg-image.dark-overlay::before {
    background: var(--overlay-dark);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 var(--spacing-6);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--spacing-6);
    color: var(--dark);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
}

/* 深色覆盖层时的标题 */
.dark-overlay .hero-title {
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto var(--spacing-8);
    line-height: 1.6;
}

/* 深色覆盖层时的副标题 */
.dark-overlay .hero-subtitle {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* 英雄区按钮组 */
.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* 卡片组件 - 简约扁平设计 */
.card {
    background-color: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.35s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    border: none;
}

.card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-xl);
}

.card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    z-index: 1;
}

.card:hover:before {
    opacity: 1;
}

.card-img-container {
    overflow: hidden;
    position: relative;
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-img {
    transform: scale(1.05);
}

.card-badge {
    position: absolute;
    top: var(--spacing-4);
    right: var(--spacing-4);
    background: var(--primary);
    color: white;
    padding: 6px 12px;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.card-content {
    padding: var(--spacing-6);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-3);
    transition: color 0.3s ease;
    position: relative;
    display: inline-block;
}

.card:hover .card-title {
    color: var(--primary);
}

.card-text {
    color: var(--gray-600);
    margin: 0 0 var(--spacing-6);
    flex-grow: 1;
    line-height: 1.6;
}

/* 按钮组件 - 简约扁平风格 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    border-radius: var(--radius-md);
    color: #fff;
    background: linear-gradient(45deg, var(--primary), var(--primary-light));
    border: none;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(45deg, var(--primary-dark), var(--primary));
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn:hover:before {
    left: 100%;
}

.btn:active {
    transform: translateY(1px);
}

.btn-outline {
    background: transparent;
    color: var(--primary) !important;
    border: 1px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff !important;
}

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
}

.btn-accent:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
}

.btn-white {
    background: white;
    color: var(--gray-700) !important;
    border-color: var(--gray-300);
}

.btn-white:hover {
    background: var(--gray-50);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: 1rem;
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: 0.85rem;
}

.btn-icon {
    padding: var(--spacing-2);
    width: 36px;
    height: 36px;
    border-radius: 4px;
}

/* 区块组件 - 简约紧凑设计 */
.section {
    padding: var(--spacing-8) 0;
    position: relative;
    overflow: hidden;
}

.section-gray {
    background-color: var(--gray-50);
}

.section-dark {
    background-color: var(--gray-900);
    color: var(--gray-100);
}

.section-dark h1, .section-dark h2, .section-dark h3,
.section-dark h4, .section-dark h5, .section-dark h6 {
    color: white;
}

.section-gradient {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: white;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-8);
    position: relative;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-6);
    color: var(--dark);
    letter-spacing: -0.03em;
    font-weight: 700;
    line-height: 1.2;
}

.section-subtitle {
    color: var(--gray-600);
    margin: 0 auto;
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    line-height: 1.7;
}

/* 波浪分隔符 */
.wave-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.wave-divider svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 70px;
}

/* 文章卡片 */
.post-card {
    display: flex;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.post-img {
    flex: 0 0 200px;
    background-size: cover;
    background-position: center;
    transition: all 0.5s ease;
}

.post-content {
    flex: 1;
    padding: 28px;
}

.post-date {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.post-date i {
    margin-right: 6px;
}

.post-title {
    font-size: 1.4rem;
    margin: 0 0 12px;
    color: var(--dark);
    letter-spacing: -0.5px;
}

.post-excerpt {
    color: var(--gray-600);
    margin: 0 0 20px;
    line-height: 1.6;
}

/* 工具项 */
.tool-item {
    display: flex;
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 24px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.tool-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.tool-icon {
    flex: 0 0 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    color: #fff;
    font-size: 1.5rem;
}

.tool-content {
    flex: 1;
    padding: 20px 24px;
}

.tool-title {
    font-size: 1.2rem;
    margin: 0 0 8px;
    color: var(--dark);
    letter-spacing: -0.5px;
}

.tool-desc {
    color: var(--gray-600);
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 标签 */
.tag {
    display: inline-block;
    background: var(--gray-100);
    color: var(--gray-700);
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 50px;
    margin: 8px 8px 8px 0;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
}

.tag:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
    border-color: var(--primary-light);
}

/* 页脚 - 简约风格 */
.footer {
    background-color: var(--gray-50);
    padding: var(--spacing-8) 0;
    border-top: 1px solid var(--gray-200);
    margin-top: var(--spacing-16);
}

.footer-links {
    margin: 20px 0;
}

.footer-link {
    color: var(--gray-400);
    margin: 0 12px;
    font-size: 1.2rem;
    transition: color 0.3s;
}

.footer-link:hover {
    color: #fff;
}

/* 工具分类 */
.tab-nav {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    overflow-x: auto;
    padding-bottom: 10px;
}

.tab-button {
    padding: 10px 24px;
    background: #fff;
    border: none;
    border-radius: 50px;
    color: var(--gray-600);
    margin: 0 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.95rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.tab-button:hover, .tab-button.active {
    background: var(--primary);
    color: #fff;
}

/* 工具面板 */
.tab-content {
    margin-top: 30px;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* 关于我区块 */
.about-container {
    background-color: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    padding: 32px;
}

/* 图片叠加效果 */
.img-overlay {
    position: relative;
    overflow: hidden;
    border-radius: 16px;
}

.img-overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(0, 0, 0, 0.5) 100%);
    z-index: 1;
    border-radius: 16px;
}

/* 特色区块 */
.feature-block {
    text-align: center;
    padding: var(--spacing-6) var(--spacing-4);
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition-fast);
}

.feature-block:hover {
    border-color: var(--primary-light);
    background-color: var(--gray-50);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 8px;
    background: rgba(75, 97, 238, 0.12);
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-4);
}

/* 文本对齐 */
.text-center {
    text-align: center !important;
}

.text-left {
    text-align: left !important;
}

.text-right {
    text-align: right !important;
}

/* 边距辅助类 */
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mb-5 { margin-bottom: 3rem !important; }

.py-0 { padding-top: 0 !important; padding-bottom: 0 !important; }
.py-1 { padding-top: 0.25rem !important; padding-bottom: 0.25rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }

.px-0 { padding-left: 0 !important; padding-right: 0 !important; }
.px-1 { padding-left: 0.25rem !important; padding-right: 0.25rem !important; }
.px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
.px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
.px-4 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }
.px-5 { padding-left: 3rem !important; padding-right: 3rem !important; }

/* 响应式设计 - 简约自适应 */
@media (max-width: 1200px) {
    :root {
        --container-max: 1024px;
    }
}

@media (max-width: 991px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .section {
        padding: var(--spacing-6) 0;
    }
    
    .grid-3, .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .col-2, .col-3, .col-4 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }

    .post-card {
        flex-direction: column;
    }

    .post-img {
        flex: 0 0 180px;
        width: 100%;
        height: 180px;
    }
    
    .section {
        padding: var(--spacing-6) 0;
    }
    
    .navbar {
        height: auto;
        padding: var(--spacing-2) 0;
    }
    
    .mobile-nav-toggle {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    .nav-menu {
        position: fixed;
        top: 68px;
        left: 0;
        width: 100%;
        background-color: var(--light);
        border-top: 1px solid var(--gray-200);
        border-bottom: 1px solid var(--gray-200);
        padding: var(--spacing-2);
        flex-direction: column;
        align-items: center;
        transform: scaleY(0);
        transform-origin: top;
        transition: transform var(--transition-fast);
        z-index: 1000;
    }
    
    .nav-menu.active {
        transform: scaleY(1);
    }
    
    .nav-item {
        width: 100%;
        text-align: center;
        margin: var(--spacing-1) 0;
    }
    
    .nav-link {
        width: 100%;
        display: block;
        padding: var(--spacing-2);
    }
    
    .row {
        gap: var(--spacing-4);
    }

    .nav-actions {
        margin-right: 40px;
    }
    
    .dropdown-menu {
        position: fixed;
        top: 68px;
        right: 10px;
        box-shadow: 0 5px 25px rgba(0,0,0,0.18);
    }
}

@media (max-width: 576px) {
    .tab-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-2);
    }
    
    .tab-button {
        margin-bottom: var(--spacing-2);
        flex: 0 0 calc(50% - var(--spacing-2));
    }
    
    .section-header {
        margin-bottom: var(--spacing-6);
    }
    
    .card-content {
        padding: var(--spacing-3);
    }
    
    .feature-block {
        padding: var(--spacing-4) var(--spacing-3);
    }
    
    .section-title {
        font-size: 1.5rem;
    }
} 

/* 删除相关样式 */
.delete-btn {
    color: #dc3545;
}

.delete-btn:hover {
    background-color: rgba(220, 53, 69, 0.1);
}

.deleting {
    position: relative;
    opacity: 0.7;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.deleting-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    border-radius: var(--radius-lg);
}

.deleting-overlay i {
    margin-right: 0.5rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
} 

/* 简洁上传表单样式 */
.simple-upload-container {
    border: 1px solid #ddd;
    border-radius: 4px;
    margin: 20px auto;
    max-width: 600px;
    background-color: #f9f9f9;
}

.upload-header {
    padding: 10px 15px;
    border-bottom: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f5f5f5;
}

.upload-header h3 {
    margin: 0;
    font-size: 16px;
    color: #333;
}

.close-upload {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #999;
    padding: 0;
}

.close-upload:hover {
    color: #333;
}

.upload-form-container {
    padding: 15px;
}

.simple-form-group {
    margin-bottom: 15px;
}

.simple-form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    color: #555;
}

.file-input-wrapper {
    display: flex;
    align-items: center;
    margin-top: 5px;
}

#file-status {
    margin-left: 10px;
    color: #666;
    font-size: 14px;
}

.simple-input,
.simple-textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 14px;
}

.simple-textarea {
    min-height: 80px;
}

.upload-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 15px;
    gap: 10px;
}

.cancel-upload,
.start-upload {
    padding: 6px 15px;
    border-radius: 3px;
    border: none;
    font-size: 14px;
    cursor: pointer;
}

.cancel-upload {
    background-color: #f5f5f5;
    color: #333;
    border: 1px solid #ddd;
}

.start-upload {
    background-color: #4361ee;
    color: white;
}

.start-upload:disabled {
    background-color: #a8b8f0;
    cursor: not-allowed;
}

#upload-progress {
    height: 5px;
    background-color: #eee;
    margin-top: 15px;
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-inner {
    height: 100%;
    background-color: #4361ee;
    width: 0;
    transition: width 0.3s;
}

.upload-message {
    margin-top: 10px;
    padding: 8px;
    border-radius: 3px;
    font-size: 14px;
    display: none;
}

.upload-message.success {
    background-color: #d4edda;
    color: #155724;
}

.upload-message.error {
    background-color: #f8d7da;
    color: #721c24;
} 

/* 图片加载状态样式 */
.image-preview {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.image-preview.loading {
    opacity: 0.3;
    filter: blur(5px);
}

.image-preview.loaded {
    opacity: 1;
    transform: scale(1);
}

/* 图片容器默认占位符 */
.image-container {
    position: relative;
    background-color: #f5f5f5;
    overflow: hidden;
}

.image-container::before {
    content: "";
    display: block;
    padding-top: 75%; /* 默认4:3比例的占位符 */
}

.image-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
} 

/* 动态交互效果 */
.dropdown-toggle::after {
    display: none;
}

.dropdown-item::before {
    display: none;
}

.dropdown-item.active {
    color: var(--primary);
    background-color: rgba(var(--primary-rgb), 0.05);
    border-left: 3px solid var(--primary);
}

/* 为登录按钮添加脉冲效果 */
.login-btn {
    position: relative;
    overflow: hidden;
}

.login-btn::after {
    display: none;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .login-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .dropdown-toggle {
        padding: 4px 8px 4px 4px;
    }
    
    .dropdown-toggle .avatar {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }
} 

/* 登录表单效果 */
.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
    transform: translate3d(0, 0, 0);
}

@keyframes shake {
    10%, 90% {
        transform: translate3d(-1px, 0, 0);
    }
    20%, 80% {
        transform: translate3d(2px, 0, 0);
    }
    30%, 50%, 70% {
        transform: translate3d(-3px, 0, 0);
    }
    40%, 60% {
        transform: translate3d(3px, 0, 0);
    }
}

.form-group.focused .form-label {
    color: var(--primary);
    transform: translateY(-2px);
}

.login-btn.success {
    background-color: #4caf50;
}

/* 改进的用户控件样式 */
.nav-actions {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1010; /* 确保下拉菜单显示在最上层 */
    margin-right: 10px;
}

/* 确保登录按钮样式覆盖之前的样式 */
.login-btn {
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
    color: var(--primary) !important;
    font-size: 0.9rem !important;
    font-weight: 500 !important;
    padding: 6px 12px !important;
    border-radius: 18px !important;
    transition: all 0.2s ease !important;
    background: rgba(var(--primary-rgb), 0.1) !important;
    border: 1px solid rgba(var(--primary-rgb), 0.2) !important;
    margin-right: 0 !important;
    text-decoration: none !important;
}

.login-btn:hover {
    background-color: rgba(var(--primary-rgb), 0.2) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 3px 8px rgba(0,0,0,0.05) !important;
    color: var(--primary) !important;
}

/* 确保用户头像显示正确 */
.dropdown {
    position: relative;
    z-index: 1010; /* 确保在移动菜单之上 */
}

.dropdown-toggle {
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
    background: rgba(var(--primary-rgb), 0.1) !important;
    border: 1px solid rgba(var(--primary-rgb), 0.2) !important;
    border-radius: 18px !important;
    padding: 3px 12px 3px 3px !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
}

/* 确保下拉菜单在正确位置 */
.dropdown-menu {
    position: absolute !important;
    top: calc(100% + 5px) !important;
    right: 0 !important;
    min-width: 180px !important;
    background-color: white !important;
    border-radius: 12px !important;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1) !important;
    border: 1px solid rgba(0,0,0,0.05) !important;
    padding: 8px 0 !important;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.2s ease;
    z-index: 1100 !important; /* 确保显示在最上层 */
}

.dropdown:hover .dropdown-menu,
.dropdown-menu.visible {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
    display: block !important;
}

/* 修复移动端样式 */
@media (max-width: 768px) {
    .nav-actions {
        margin-right: 50px !important; /* 确保不被汉堡菜单覆盖 */
        position: relative !important;
        z-index: 1200 !important;
    }
    
    .dropdown-toggle {
        padding-right: 8px !important;
    }
    
    /* 确保下拉菜单在移动端正确显示 */
    .dropdown-menu {
        position: absolute !important;
        top: 38px !important;
        right: 0 !important;
        width: 200px !important;
        box-shadow: 0 8px 16px rgba(0,0,0,0.15) !important;
    }
} 

/* 头像动画效果 */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.15);
    }
    100% {
        transform: scale(1);
    }
}

.avatar.pulse {
    animation: pulse 0.5s ease;
}

@keyframes logout-animation {
    0% {
        transform: translateY(0) rotate(0);
    }
    60% {
        transform: translateY(5px) rotate(5deg);
    }
    100% {
        transform: translateY(60px) rotate(15deg) scale(0);
    }
}

.avatar.logout-animation {
    animation: logout-animation 0.5s forwards;
} 

/* 恢复头像样式 */
.dropdown-toggle .avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    box-shadow: 0 2px 5px rgba(var(--primary-rgb), 0.3);
    transition: all 0.2s ease;
    overflow: hidden; /* 确保内容不超出圆形边界 */
}

.dropdown-toggle:hover .avatar {
    transform: scale(1.05);
}

.dropdown-toggle #username-display {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-700);
    margin: 0 2px;
}

/* 恢复下拉菜单项样式 */
.dropdown-item {
    padding: 10px 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-700);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
}

.dropdown-item i {
    font-size: 1.1rem;
    color: var(--gray-600);
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: rgba(var(--primary-rgb), 0.05);
    color: var(--primary);
}

.dropdown-item:hover i {
    color: var(--primary);
}

#admin-link {
    color: var(--primary);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    padding-bottom: 12px;
    margin-bottom: 4px;
}

#logout-link {
    color: #e74c3c;
}

#logout-link i {
    color: #e74c3c;
}

#logout-link:hover {
    background-color: rgba(231, 76, 60, 0.08);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .dropdown-toggle #username-display {
        max-width: 80px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
} 

/* 增强下拉菜单的显示效果 */
.dropdown-header {
    padding: 10px 15px;
    font-size: 0.8rem;
    color: var(--gray-500);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    margin-bottom: 5px;
}

/* 进一步保证用户控件的显示 */
.nav-login-btn {
    min-width: 80px;
    justify-content: center;
}

.user-dropdown {
    min-width: 42px;
}

.user-dropdown-toggle {
    position: relative;
}

.user-dropdown-menu {
    max-height: 300px;
    overflow-y: auto;
}

.user-avatar {
    min-width: 28px;
}

.username-display {
    display: inline-block !important;
} 

/* 添加一些活力动画 */
@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-5px);
    }
    100% {
        transform: translateY(0px);
    }
}

.card {
    animation: float 5s ease-in-out infinite;
    animation-play-state: paused;
}

.card:hover {
    animation-play-state: running;
} 



/* 页脚样式 */
.footer-content {
    text-align: center;
    margin-bottom: 20px;
}

.footer-logo {
    color: var(--gray-300);
    margin-bottom: 16px;
}

.footer-logo span {
    color: var(--primary);
}

.footer-text {
    color: var(--gray-500);
}

.footer-text a {
    color: var(--gray-500);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-text a:hover {
    color: var(--primary);
}

/* 工具页面增强样式 - 更紧凑 */
.page-title-container {
    text-align: center;
    margin-bottom: var(--spacing-8);
    padding-top: var(--spacing-6);
}

.page-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-2);
    position: relative;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
    opacity: 0.6;
}

.page-subtitle {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: var(--gray-600);
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.5;
}

/* 标签导航优化 */
.tab-nav {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-6);
    overflow-x: auto;
    padding: 0 var(--spacing-2);
    gap: var(--spacing-2);
}

.tab-button {
    padding: 0.6rem 1.2rem;
    background: white;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    white-space: nowrap;
}

.tab-button:hover {
    background: var(--gray-50);
    border-color: var(--primary-light);
    color: var(--primary);
    transform: translateY(-1px);
}

.tab-button.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(77, 128, 228, 0.3);
}

/* 分类标题优化 */
.section h3 {
    margin: var(--spacing-6) 0 var(--spacing-4);
    font-size: 1.2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-800);
}

.section h3 span {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-left: 0.5rem;
    font-weight: normal;
}

/* 工具卡片优化 - 更小更紧凑的设计 */
.tool-item {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--spacing-3);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    min-height: 140px;
}

.tool-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tool-item:hover::before {
    transform: scaleX(1);
}

.tool-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-light);
}

.tool-icon {
    width: 35px;
    height: 35px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-2);
    color: white;
    font-size: 1rem;
    box-shadow: 0 2px 8px rgba(77, 128, 228, 0.3);
    transition: all 0.3s ease;
}

.tool-item:hover .tool-icon {
    transform: scale(1.05) rotate(3deg);
    box-shadow: 0 4px 12px rgba(77, 128, 228, 0.4);
}

.tool-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.tool-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-1);
    line-height: 1.3;
}

.tool-desc {
    color: var(--gray-600);
    line-height: 1.4;
    margin-bottom: var(--spacing-2);
    flex-grow: 1;
    font-size: 0.8rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    max-height: 2.4em; /* 备用方案 */
}

/* 按钮优化 */
.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    margin-top: auto;
    align-self: flex-start;
}

.btn-sm:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(77, 128, 228, 0.3);
    color: white;
}

.btn-sm::after {
    content: '→';
    transition: transform 0.3s ease;
    font-size: 0.7rem;
}

.btn-sm:hover::after {
    transform: translateX(2px);
}

/* 网格布局优化 */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-3);
}

/* 大屏幕优化 */
@media (min-width: 1200px) {
    .grid-3 {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (min-width: 992px) and (max-width: 1199px) {
    .grid-3 {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .tool-item {
        padding: var(--spacing-2);
        min-height: 120px;
    }

    .tool-icon {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }

    .tool-title {
        font-size: 0.85rem;
    }

    .tool-desc {
        font-size: 0.75rem;
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-2);
    }
}

@media (max-width: 576px) {
    .grid-3 {
        grid-template-columns: 1fr;
        gap: var(--spacing-2);
    }

    .tool-item {
        min-height: 110px;
    }
}

/* 时钟样式 - 现代化设计 */
.clock-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
    text-align: center;
    position: relative;
}

.clock-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(77, 128, 228, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    animation: pulse-bg 4s ease-in-out infinite;
}

@keyframes pulse-bg {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.1;
    }
}

.clock {
    padding: 3rem;
    border-radius: var(--radius-2xl);
    background: linear-gradient(145deg,
        rgba(255, 255, 255, 0.9),
        rgba(248, 250, 252, 0.9));
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow:
        0 20px 40px rgba(77, 128, 228, 0.1),
        0 8px 16px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transition: var(--transition-normal);
    transform: translateY(0);
    animation: floatClock 6s ease-in-out infinite;
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

@keyframes floatClock {
    0%, 100% {
        transform: translateY(0) rotateX(0deg);
    }
    50% {
        transform: translateY(-10px) rotateX(2deg);
    }
}

.clock:hover {
    box-shadow:
        0 25px 50px rgba(77, 128, 228, 0.15),
        0 12px 24px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transform: translateY(-5px) scale(1.02);
}

.clock::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary), var(--accent), var(--primary));
    border-radius: var(--radius-2xl);
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.clock:hover::before {
    opacity: 0.1;
}

.time {
    font-size: clamp(3.5rem, 8vw, 5.5rem);
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.05em;
    margin-bottom: 1.2rem;
    text-shadow: none;
    display: block;
    font-family: 'Inter', 'Poppins', monospace;
    position: relative;
}

.time::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
    opacity: 0.6;
}

.date {
    font-size: clamp(1.1rem, 3vw, 1.4rem);
    color: var(--gray-600);
    letter-spacing: 0.5px;
    display: block;
    font-weight: 500;
    margin-top: 0.5rem;
    position: relative;
}

.date::before {
    content: '📅';
    margin-right: 8px;
    font-size: 1.1em;
}

/* 添加时钟装饰元素 */
.clock::after {
    content: '';
    position: absolute;
    top: 20px;
    right: 20px;
    width: 12px;
    height: 12px;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    border-radius: 50%;
    opacity: 0.6;
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.2; }
}

@media (max-width: 768px) {
    .clock {
        padding: 2.5rem 2rem;
        max-width: 90%;
    }

    .clock-container::before {
        width: 400px;
        height: 400px;
    }
}

@media (max-width: 576px) {
    .clock {
        padding: 2rem 1.5rem;
    }

    .time::after {
        width: 40px;
        height: 2px;
    }
}

