/* AI工具集导航样式 - 58q8.com */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --bg: #0f0f1a;
    --bg-light: #1a1a2e;
    --bg-card: #16162a;
    --text: #ffffff;
    --text-muted: #a0a0b0;
    --text-dim: #6a6a7a;
    --border: #2a2a3e;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
    --shadow-hover: 0 8px 30px rgba(99,102,241,0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* 顶部导航 */
.top-nav {
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}

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

/* 头部搜索区 */
.hero-section {
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg) 100%);
    padding: 60px 20px;
    text-align: center;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
}

.hero-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 40px;
}

/* 搜索框 */
.search-container {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 8px;
    border: 1px solid var(--border);
    margin-bottom: 24px;
}

.search-tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    margin-bottom: 8px;
}

.tab {
    padding: 8px 20px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 14px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s;
}

.tab:hover {
    color: var(--text);
    background: rgba(255,255,255,0.05);
}

.tab.active {
    background: var(--gradient);
    color: white;
}

.search-box {
    display: flex;
    gap: 8px;
}

.search-input {
    flex: 1;
    padding: 16px 20px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

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

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

.search-btn {
    padding: 16px 28px;
    background: var(--gradient);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s;
}

.search-btn:hover {
    opacity: 0.9;
}

/* 快捷链接 */
.quick-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.quick-label {
    color: var(--text-muted);
    font-size: 14px;
}

.quick-links a {
    padding: 8px 16px;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.3);
    border-radius: 20px;
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.quick-links a:hover {
    background: var(--primary);
    color: white;
}

/* 区块标题 */
.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}

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

.more-link {
    display: inline-block;
    margin-top: 12px;
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
}

.more-link:hover {
    text-decoration: underline;
}

/* AI工具分类 */
.tools-section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.category-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px 20px;
    text-align: center;
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s;
}

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

.category-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.category-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.category-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* 热门工具 */
.hot-tools-section {
    padding: 60px 20px;
    background: var(--bg-light);
    max-width: 1200px;
    margin: 0 auto;
    border-radius: 24px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s;
}

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

.tool-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.tool-icon {
    font-size: 28px;
}

.tool-name {
    font-size: 17px;
    font-weight: 600;
}

.tool-desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

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

.tag {
    padding: 4px 10px;
    background: rgba(99,102,241,0.1);
    border-radius: 12px;
    font-size: 12px;
    color: var(--primary);
}

/* AI资讯 */
.news-section {
    padding: 60px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.news-list {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

.news-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
    transition: background 0.3s;
}

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

.news-item:hover {
    background: rgba(255,255,255,0.02);
}

.hot-badge {
    padding: 2px 8px;
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    color: white;
}

.news-title {
    flex: 1;
    color: var(--text);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}

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

.news-date {
    font-size: 13px;
    color: var(--text-dim);
}

/* 页脚 */
.footer {
    background: var(--bg-light);
    border-top: 1px solid var(--border);
    padding: 50px 20px 30px;
    margin-top: 60px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 8px;
}

.footer-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 14px;
}

/* 响应式 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-stats {
        gap: 20px;
    }
}

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

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

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

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