/**
 * 搜索功能样式
 * 适配 Tufte 风格和主题切换按钮
 */

/*******************************************************************************
搜索触发按钮 (与主题切换按钮风格一致)
*******************************************************************************/

.search-trigger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.15rem;
    height: 2.15rem;
    padding: 0;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 0.5rem;
    cursor: pointer;
    margin-left: auto;
    margin-right: 0.3rem;
    margin-top: 0;
    transition: background-color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
    color: #374151;
}

.search-trigger:hover {
    background: var(--highlight-weak, rgba(128, 128, 128, 0.2));
    border-color: var(--theme-table-border, #cfcfcf);
    transform: translateY(-1px);
}

.search-trigger:focus-visible {
    outline: 2px solid var(--highlight-strong, rgba(128, 128, 128, 0.4));
    outline-offset: 2px;
}

.search-trigger svg {
    width: 1.25rem;
    height: 1.25rem;
}

/* 深色模式下的搜索按钮 */
html[data-theme="dark"] .search-trigger,
html:not([data-theme]) .search-trigger {
    color: #d1d5db;
}

/* 系统偏好浅色模式 */
@media (prefers-color-scheme: light) {
    html:not([data-theme]) .search-trigger {
        color: #374151;
    }
}

/* 系统偏好深色模式 */
@media (prefers-color-scheme: dark) {
    html:not([data-theme]) .search-trigger {
        color: #d1d5db;
    }
}

/*******************************************************************************
搜索遮罩层和弹窗 (适配明暗主题)
*******************************************************************************/

.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
    z-index: 1000;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.search-overlay.active {
    display: flex;
    opacity: 1;
}

/* 搜索容器 - 浅色模式 */
.search-container {
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    background: var(--theme-bg, #fffff8);
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--theme-table-border, #ccc);
}

/* 搜索头部 */
.search-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    border-bottom: 1px solid var(--theme-table-border, #ccc);
    background: var(--theme-bg, #fffff8);
}

/* 搜索输入框 */
.search-input {
    flex: 1;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--theme-table-border, #ccc);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    outline: none;
    background: var(--theme-code-bg, #f7f7f7);
    color: var(--theme-text, #111);
}

.search-input:focus {
    border-color: var(--highlight-strong, rgba(128, 128, 128, 0.4));
    box-shadow: 0 0 0 2px var(--highlight-weak, rgba(128, 128, 128, 0.2));
}

/* 搜索关闭按钮 */
.search-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--theme-text, #111);
    flex-shrink: 0;
}

.search-close:hover {
    background: var(--highlight-weak, rgba(128, 128, 128, 0.2));
}

/* 搜索结果区域 */
.search-results {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: var(--theme-bg, #fffff8);
}

/* 搜索占位符和无结果 */
.search-placeholder,
.search-no-results {
    text-align: center;
    padding: 2rem;
    color: var(--theme-text, #111);
    opacity: 0.7;
}

/* 搜索结果数量 */
.search-results-count {
    padding: 0.5rem 0;
    margin-bottom: 1rem;
    color: var(--theme-text, #111);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--theme-table-border, #ccc);
    opacity: 0.8;
}

/* 搜索结果项 */
.search-result-item {
    padding: 1rem;
    margin-bottom: 0.8rem;
    border: 1px solid var(--theme-table-border, #ccc);
    border-radius: 4px;
    transition: all 0.2s ease;
    background: var(--theme-bg, #fffff8);
}

.search-result-item:hover {
    border-color: var(--highlight-strong, rgba(128, 128, 128, 0.4));
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.search-result-item.is-active {
    border-color: var(--highlight-strong, rgba(128, 128, 128, 0.45));
    box-shadow: 0 0 0 2px var(--highlight-weak, rgba(128, 128, 128, 0.2));
    background: var(--highlight-weak, rgba(128, 128, 128, 0.2));
}

/* 搜索结果链接 */
.search-result-link {
    text-decoration: none;
    color: inherit;
}

.search-result-link:hover {
    text-decoration: none;
}

.search-result-link:focus-visible {
    outline: none;
}

/* 搜索结果标题 */
.search-result-title {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    color: var(--theme-heading, #111);
}

.search-result-title mark {
    background: transparent;
    font-weight: 700;
    color: inherit;
    border-bottom: 2px solid currentColor;
}

/* 搜索结果元数据 */
.search-result-meta {
    display: flex;
    gap: 0.8rem;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--theme-text, #111);
    opacity: 0.7;
}

.search-result-date,
.search-result-category {
    display: inline-flex;
    align-items: center;
}

/* 搜索结果片段 */
.search-result-snippet {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--theme-text, #111);
}

.search-result-snippet mark {
    background: #ffeb3b;
    color: #000;
    padding: 0.1rem 0.2rem;
    border-radius: 2px;
    font-weight: 500;
}

/* 深色模式下的高亮样式调整 */
html[data-theme="dark"] .search-result-snippet mark,
html:not([data-theme]) .search-result-snippet mark {
    background: #ffd700;
    color: #000;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .search-overlay {
        padding-top: 0;
        align-items: flex-end;
    }

    .search-container {
        width: 100%;
        max-width: 100%;
        max-height: 100%;
        border-radius: 12px 12px 0 0;
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
    }

    .search-results {
        padding: 0.8rem;
    }

    .search-result-item {
        padding: 0.8rem;
    }
}

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

.search-results::-webkit-scrollbar-track {
    background: transparent;
}

.search-results::-webkit-scrollbar-thumb {
    background: var(--theme-table-border, #ccc);
    border-radius: 4px;
}

.search-results::-webkit-scrollbar-thumb:hover {
    background: var(--highlight-strong, rgba(128, 128, 128, 0.4));
}

/* 深色模式变量覆盖 */
html[data-theme="dark"] {
    --search-bg: #151515;
    --search-text: #ddd;
    --search-border: #444;
    --search-input-bg: #2d2d2d;
}

/* 系统偏好深色模式 */
@media (prefers-color-scheme: dark) {
    html:not([data-theme]) {
        --search-bg: #151515;
        --search-text: #ddd;
        --search-border: #444;
        --search-input-bg: #2d2d2d;
    }
}

/* 浅色模式变量 */
html[data-theme="light"] {
    --search-bg: #fffff8;
    --search-text: #111;
    --search-border: #ccc;
    --search-input-bg: #f7f7f7;
}

/* 系统偏好浅色模式 */
@media (prefers-color-scheme: light) {
    html:not([data-theme]) {
        --search-bg: #fffff8;
        --search-text: #111;
        --search-border: #ccc;
        --search-input-bg: #f7f7f7;
    }
}