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

:root {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #e0e6ed;
    --accent-color: #3498db;
    --hover-bg: #f0f4f8;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

body.dark-mode {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #999999;
    --border-color: #404040;
    --accent-color: #4a9eff;
    --hover-bg: #3a3a3a;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.4;
    transition: all 0.3s ease;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 15px;
}

header {
    text-align: center;
    margin-bottom: 20px;
    position: relative;
}

h1 {
    font-size: 1.8em;
    margin-bottom: 5px;
    color: var(--text-primary);
}

header p {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

/* 全局搜索框 */
.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto 15px;
}

.search-input {
    width: 100%;
    padding: 10px 15px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95em;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

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

.search-results {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: var(--shadow);
    max-height: 500px;
    overflow-y: auto;
    z-index: 1000;
    margin-top: 5px;
}

.search-result-section {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

.search-result-title {
    font-size: 0.9em;
    color: var(--accent-color);
    margin-bottom: 8px;
    font-weight: 600;
}

.no-results {
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
}

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    top: 15px;
    right: 65px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    z-index: 100;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* 视图切换按钮 */
.view-toggle {
    position: fixed;
    top: 15px;
    right: 15px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    z-index: 100;
}

.view-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.view-tooltip {
    position: absolute;
    bottom: -35px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-primary);
    color: var(--bg-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75em;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.view-toggle:hover .view-tooltip {
    opacity: 1;
    visibility: visible;
}

/* 视图切换下拉菜单 */
.view-menu {
    position: fixed;
    top: 60px;
    right: 15px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 8px 0;
    min-width: 150px;
    z-index: 101;
    display: none;
}

.view-menu.show {
    display: block;
}

.view-menu-item {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background-color 0.2s ease;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    font-size: 0.9em;
    text-align: left;
}

.view-menu-item:hover {
    background-color: var(--hover-bg);
}

.view-menu-item.active {
    background-color: var(--accent-color);
    color: white;
}

.view-menu-icon {
    margin-right: 10px;
    font-size: 1.1em;
}

/* 栏目区域 */
.section {
    margin-bottom: 20px;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    padding: 12px;
    box-shadow: var(--shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--accent-color);
}

.section-title-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.section-search {
    width: 200px;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.85em;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.section-search:focus {
    outline: none;
    border-color: var(--accent-color);
}

.download-btn {
    padding: 5px 12px;
    font-size: 0.8em;
    border: 1px solid var(--accent-color);
    border-radius: 4px;
    background: var(--bg-secondary);
    color: var(--accent-color);
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
    font-weight: 500;
    white-space: nowrap;
}

.download-btn:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(52, 152, 219, 0.2);
}

body.dark-mode .download-btn {
    background: var(--bg-secondary);
    border-color: var(--accent-color);
    color: var(--accent-color);
}

body.dark-mode .download-btn:hover {
    background: var(--accent-color);
    color: white;
}

/* 紧凑网格布局 */
.compact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 8px;
}

.card-link-wrapper {
    text-decoration: none;
    color: inherit;
    display: block;
}

/* 紧凑卡片 */
.compact-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
    height: 100%;
}

.compact-card:hover {
    background-color: var(--hover-bg);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12);
}

.compact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background-color: var(--accent-color);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.compact-card:hover::before {
    opacity: 1;
}

.compact-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 6px;
}

.compact-card-title {
    font-size: 0.95em;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 8px;
}

.compact-card-link {
    font-size: 0.75em;
    color: var(--accent-color);
    text-decoration: none;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
}

.compact-card-link:hover {
    text-decoration: underline;
}

.compact-card-description {
    font-size: 0.8em;
    color: var(--text-secondary);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* 页脚 */
.panel-footer {
    text-align: center;
    padding: 20px 0;
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    color: var(--text-secondary);
    font-size: 0.85em;
}

.footer-content a {
    color: var(--accent-color);
    text-decoration: none;
}

.footer-content a:hover {
    text-decoration: underline;
}

.beian-info {
    margin-top: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.beian-link {
    color: var(--text-secondary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.beian-link:hover {
    color: var(--accent-color);
}

.beian-divider {
    color: var(--text-secondary);
}

.beian-icon {
    vertical-align: middle;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .compact-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    h1 {
        font-size: 1.5em;
    }

    .compact-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 6px;
    }

    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .section-title-wrapper {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .section-search {
        width: 100%;
    }

    .theme-toggle {
        top: 10px;
        right: 60px;
        width: 35px;
        height: 35px;
        font-size: 1em;
    }

    .view-toggle {
        top: 10px;
        right: 10px;
        width: 35px;
        height: 35px;
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .compact-grid {
        grid-template-columns: 1fr;
    }

    .compact-card {
        padding: 8px 10px;
    }

    .compact-card-title {
        font-size: 0.9em;
    }

    .compact-card-description {
        font-size: 0.75em;
    }
}

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

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

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

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

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--accent-color);
    color: white;
    border: none;
    font-size: 1.5em;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

body.dark-mode .back-to-top {
    background: #63b3ed;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 1.3em;
    }
}