/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --bg-color: #f5f7fa;
    --card-bg: #ffffff;
    --text-color: #333333;
    --text-light: #7f8c8d;
    --border-color: #e1e8ed;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 2rem 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 搜索区域 */
.search-section {
    background: white;
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.search-box {
    display: flex;
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto 1.5rem;
}

#searchInput {
    flex: 1;
    padding: 1rem 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
}

#searchInput:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

#searchBtn {
    padding: 1rem 2rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
}

#searchBtn:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.search-tips {
    text-align: center;
    color: var(--text-light);
}

.search-tips span {
    margin-right: 1rem;
}

.tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--bg-color);
    color: var(--secondary-color);
    text-decoration: none;
    border-radius: 20px;
    margin: 0.25rem;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.tag:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

/* 主内容区域 */
.main-content {
    display: flex;
    gap: 2rem;
    flex: 1;
    padding: 0 2rem 2rem;
}

/* 侧边栏 */
.sidebar {
    width: 300px;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    height: fit-content;
    position: sticky;
    top: 2rem;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.sidebar-header h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.category-select {
    margin-bottom: 1rem;
}

.category-dropdown {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    background: white;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text-color);
}

.category-dropdown:hover {
    border-color: var(--secondary-color);
}

.category-dropdown:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.filter-buttons {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.9rem;
}

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

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

.command-list {
    max-height: 600px;
    overflow-y: auto;
    padding: 0.5rem;
}

.command-item {
    padding: 0.75rem 1rem;
    margin: 0.25rem 0;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.command-item:hover {
    background: var(--bg-color);
    border-left-color: var(--secondary-color);
    transform: translateX(5px);
}

.command-item.active {
    background: var(--secondary-color);
    color: white;
    border-left-color: var(--accent-color);
}

.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}

/* 内容区域 */
.content {
    flex: 1;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 2rem;
    min-height: 500px;
}

/* 欢迎页面 */
.welcome {
    text-align: center;
    padding: 4rem 2rem;
}

.welcome-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
}

.welcome h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 2rem;
}

.welcome p {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.stat-label {
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* 命令详情页面 */
.command-detail {
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.command-header {
    border-bottom: 3px solid var(--secondary-color);
    padding-bottom: 1rem;
    margin-bottom: 2rem;
}

.command-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.command-description {
    font-size: 1.2rem;
    color: var(--text-light);
}

/* Markdown内容样式 */
.markdown-content h2 {
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    font-size: 1.8rem;
}

.markdown-content h3 {
    color: var(--primary-color);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.4rem;
}

.markdown-content p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.markdown-content code {
    background: var(--bg-color);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    color: var(--accent-color);
}

.markdown-content pre {
    background: #282c34;
    color: #abb2bf;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
    box-shadow: var(--shadow);
}

.markdown-content pre code {
    background: none;
    color: inherit;
    padding: 0;
}

.markdown-content ul, .markdown-content ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.markdown-content li {
    margin-bottom: 0.5rem;
}

.markdown-content blockquote {
    border-left: 4px solid var(--secondary-color);
    padding-left: 1rem;
    margin: 1rem 0;
    color: var(--text-light);
    font-style: italic;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.markdown-content th, .markdown-content td {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.markdown-content th {
    background: var(--bg-color);
    font-weight: 600;
    color: var(--primary-color);
}

/* 页脚 */
.footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
}

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

.command-list::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 4px;
}

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

.command-list::-webkit-scrollbar-thumb:hover {
    background: #2980b9;
}

/* 响应式设计 */
@media (max-width: 968px) {
    .main-content {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        position: static;
    }

    .command-list {
        max-height: 300px;
    }

    .header h1 {
        font-size: 2rem;
    }

    .search-box {
        flex-direction: column;
    }
}

@media (max-width: 640px) {
    .header {
        padding: 1.5rem 1rem;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .search-section {
        padding: 1rem;
    }

    .main-content {
        padding: 0 1rem 1rem;
    }

    .content {
        padding: 1rem;
    }
}