/* 高端、大气、时尚的设计系统 */

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局变量 */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #1e293b;
    --accent-color: #6366f1;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.7);
    --border-color: #334155;
    --border-hover: #475569;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --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);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
}

/* 基础样式 */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* 背景效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.1) 0%, transparent 60%);
    z-index: -1;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

/* 段落和文本 */
p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* 卡片样式 */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

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

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    gap: 0.5rem;
    min-width: 120px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--accent-color));
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: rgba(37, 99, 235, 0.1);
}

/* 输入框样式 */
input, textarea, select {
    background-color: rgba(15, 23, 42, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
    width: 100%;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

/* 表单标签 */
label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* 导航栏样式 */
.navbar {
    background-color: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-link {
    position: relative;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 50%;
}

/* 优化版导航栏样式 */
header.sticky {
    transition: all 0.3s ease;
}

header.sticky.scrolled {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* 渐变文本效果增强 */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    display: inline-block;
}

/* 导航链接下划线动画 */
header nav a.nav-link {
    position: relative;
    overflow: hidden;
}

header nav a.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

header nav a.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* 按钮悬停增强效果 */
button:hover:not(:disabled) {
    transform: translateY(-1px);
}

button:active:not(:disabled) {
    transform: translateY(0);
}

/* 移动端菜单按钮动画 */
.mobile-menu-btn {
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    transform: rotate(90deg);
}

/* 热门搜索标签样式 */

/* 隐藏装饰性粒子元素 */
.particle {
    display: none !important;
}

/* 优化header中网站标志、搜索框和右侧操作区的布局 */
header .flex.items-center.justify-between {
    align-items: center;
    gap: 20px;
    flex-wrap: nowrap;
}

header .flex.items-center.justify-between .group {
    flex-shrink: 0;
}

header .flex.items-center.justify-between .flex-grow {
    flex-grow: 1;
    min-width: 0;
}

header .flex.items-center.justify-between .flex-grow form {
    width: 100%;
}

header .flex.items-center.justify-between .flex.items-center {
    flex-shrink: 0;
}
.trending-tags a {
    transition: all 0.2s ease;
}

.trending-tags a:hover {
    transform: translateY(-2px);
}

/* 搜索框聚焦动画 */
#local-search-input:focus {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
}

/* 工具卡片样式 - 高端大气设计 */
.tool-card {
    border-radius: 0.5rem; /* 更精致的圆角 */
    border: 1px solid rgba(229, 231, 235, 1); /* 清晰的边框 */
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* 更平滑的过渡 */
    overflow: hidden;
    background: linear-gradient(145deg, #ffffff 0%, #f9fafb 100%);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
}

.tool-card:hover {
    transform: translateY(-4px);
    border-color: rgba(209, 213, 219, 1);
    box-shadow: 
        0 10px 15px -3px rgba(0, 0, 0, 0.1),
        0 4px 6px -2px rgba(0, 0, 0, 0.05),
        0 0 0 1px rgba(255, 255, 255, 0.5) inset;
}

.tool-card .tool-name a {
    font-weight: 600;
    font-size: 1.05rem;
    line-height: 1.5;
    background: linear-gradient(to right, #1e40af, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.tool-card .tool-description {
    line-height: 1.6;
    color: #4b5563;
}

/* 卡片底部信息样式增强 */
.tool-card .mt-4 {
    border-top: 1px solid rgba(243, 244, 246, 1);
    padding-top: 0.75rem;
    margin-top: 0.75rem;
}

.tool-card .text-xs.text-gray-500 {
    font-weight: 500;
    letter-spacing: 0.02em;
}

.tool-card .text-xs.font-medium.text-primary {
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* 骨架屏动画增强 */
@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* 微妙的页面进入动画 */
.page-fade-in {
    animation: pageFadeIn 0.8s ease-out;
}

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

/* 图标脉冲动画 */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* 网格布局 */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* 加载动画 */
.loader {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(37, 99, 235, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s ease-in-out infinite;
}

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

/* 渐变文本效果 */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* 卡片悬停效果 */
.hover-card {
    transition: all var(--transition-normal);
}

.hover-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

/* 毛玻璃效果 */
.glass-effect {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 徽章样式 */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background-color: rgba(37, 99, 235, 0.2);
    color: var(--primary-color);
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

/* 分隔线 */
.divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border-color), transparent);
    margin: 2rem 0;
}

/* 页脚样式 */
.footer {
    background-color: var(--bg-secondary);
    padding: 3rem 0 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 1rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .grid {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: 1.25rem;
        margin-bottom: 1.25rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* 选择文本样式 */
::selection {
    background-color: rgba(37, 99, 235, 0.3);
    color: var(--text-primary);
}

/* 焦点样式 */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 工具提示 */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
    box-shadow: var(--shadow-lg);
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
    bottom: calc(100% + 0.5rem);
}

/* 模态框背景 */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

/* 模态框内容 */
.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    max-width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    opacity: 0;
    transition: all var(--transition-normal);
}

.modal-backdrop.active .modal-content {
    transform: scale(1);
    opacity: 1;
}

/* 骨架屏加载状态 */
.skeleton {
    background: linear-gradient(90deg, var(--border-color) 25%, var(--border-hover) 50%, var(--border-color) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

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

/* 图片样式 */
.img-responsive {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-normal);
}

.img-responsive:hover {
    transform: scale(1.02);
}

/* 阴影变体 */
.shadow-glow {
    box-shadow: 0 0 25px rgba(37, 99, 235, 0.2);
}

.shadow-soft {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* 徽章变体 */
.badge-pill {
    border-radius: 9999px;
}

/* 按钮变体 */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* 文本变体 */
.text-xs {
    font-size: 0.75rem;
}

.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;
}

/* 文本对齐 */
.text-left {
    text-align: left;
}

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

.text-right {
    text-align: right;
}

/* 边距工具 */
.m-0 { margin: 0; }
.m-1 { margin: 0.25rem; }
.m-2 { margin: 0.5rem; }
.m-3 { margin: 0.75rem; }
.m-4 { margin: 1rem; }
.m-5 { margin: 1.25rem; }
.m-6 { margin: 1.5rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }
.mt-6 { margin-top: 1.5rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-3 { margin-left: 0.75rem; }
.ml-4 { margin-left: 1rem; }
.ml-5 { margin-left: 1.25rem; }
.ml-6 { margin-left: 1.5rem; }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 0.75rem; }
.mr-4 { margin-right: 1rem; }
.mr-5 { margin-right: 1.25rem; }
.mr-6 { margin-right: 1.5rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: 0.25rem; }
.pt-2 { padding-top: 0.5rem; }
.pt-3 { padding-top: 0.75rem; }
.pt-4 { padding-top: 1rem; }
.pt-5 { padding-top: 1.25rem; }
.pt-6 { padding-top: 1.5rem; }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: 0.25rem; }
.pb-2 { padding-bottom: 0.5rem; }
.pb-3 { padding-bottom: 0.75rem; }
.pb-4 { padding-bottom: 1rem; }
.pb-5 { padding-bottom: 1.25rem; }
.pb-6 { padding-bottom: 1.5rem; }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: 0.25rem; }
.pl-2 { padding-left: 0.5rem; }
.pl-3 { padding-left: 0.75rem; }
.pl-4 { padding-left: 1rem; }
.pl-5 { padding-left: 1.25rem; }
.pl-6 { padding-left: 1.5rem; }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: 0.25rem; }
.pr-2 { padding-right: 0.5rem; }
.pr-3 { padding-right: 0.75rem; }
.pr-4 { padding-right: 1rem; }
.pr-5 { padding-right: 1.25rem; }
.pr-6 { padding-right: 1.5rem; }

/* 容器类 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Flexbox 工具类 */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-row {
    flex-direction: row;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-around {
    justify-content: space-around;
}

.flex-wrap {
    flex-wrap: wrap;
}

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-5 { gap: 1.25rem; }
.gap-6 { gap: 1.5rem; }

/* 动画延迟工具 */
.delay-100 {
    animation-delay: 100ms;
}

.delay-200 {
    animation-delay: 200ms;
}

.delay-300 {
    animation-delay: 300ms;
}

.delay-400 {
    animation-delay: 400ms;
}

.delay-500 {
    animation-delay: 500ms;
}

/* 图标样式 */
.icon {
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    fill: currentColor;
}

/* 响应式断点 */
@media (min-width: 640px) {
    .container {
        padding: 0 2rem;
    }
}

@media (min-width: 768px) {
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1280px) {
    .xl\:grid-cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 打印样式 */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .navbar, .footer, .btn, .sidebar {
        display: none;
    }
}