/* WeekPaper 样式 */

/* ===== 基础重置 ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #fafaf8;
    --color-card: #ffffff;
    --color-border: #e8e6e1;
    --color-text: #1c1917;
    --color-text-secondary: #57534e;
    --color-text-muted: #a8a29e;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-light: #eff6ff;
    --color-success: #059669;
    --color-warning: #d97706;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.08);
    --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: Georgia, "Songti SC", "SimSun", serif;
    --max-width: 880px;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== 顶部导航 ===== */
.site-header {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 24px 0 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-main {
    margin-bottom: 12px;
}

.site-title {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.site-icon {
    font-size: 28px;
    line-height: 1;
}

.site-subtitle {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.header-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.week-badge {
    background: var(--color-accent);
    color: white;
    font-size: 13px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
}

.week-range {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
}

.gen-time {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-left: auto;
}

/* ===== 统计栏 ===== */
.stats-bar {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
}

.stats-bar .container {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1.2;
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

/* ===== 控制栏 ===== */
.control-bar {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    position: sticky;
    top: var(--sticky-top-control, 150px);
    z-index: 90;
    box-shadow: var(--shadow-sm);
}

.control-row {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 400px;
}

.search-box input {
    width: 100%;
    padding: 10px 36px 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: var(--color-bg);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.search-box input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}
.search-box input::placeholder {
    color: var(--color-text-muted);
}

.search-clear {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 20px;
    cursor: pointer;
    width: 28px;
    height: 28px;
    display: none;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.search-clear:hover {
    background: var(--color-border);
    color: var(--color-text);
}
.search-clear.visible {
    display: flex;
}

.filter-group {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.journal-select {
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: inherit;
    background: var(--color-bg);
    cursor: pointer;
    min-width: 160px;
}
.journal-select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.btn {
    padding: 10px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-family: inherit;
    background: var(--color-card);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}
.btn:hover {
    background: var(--color-bg);
    border-color: var(--color-text-muted);
}
.btn-small {
    padding: 8px 12px;
    font-size: 12px;
}

.active-filters {
    margin-top: 10px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--color-accent-light);
    color: var(--color-accent);
    font-size: 12px;
    border-radius: 20px;
}
.filter-tag .remove {
    cursor: pointer;
    font-weight: bold;
    opacity: 0.7;
}
.filter-tag .remove:hover {
    opacity: 1;
}

/* ===== 文章列表 ===== */
.article-list {
    padding: 24px 0 48px;
}

/* 期刊分组 */
.journal-section {
    margin-bottom: 20px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    /* 注意：不要 overflow:hidden，会破坏 sticky 定位 */
    box-shadow: var(--shadow-sm);
}

.journal-section.hidden {
    display: none;
}

.journal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: linear-gradient(to right, var(--color-bg), var(--color-card));
    cursor: pointer;
    user-select: none;
    transition: background 0.2s, padding 0.25s, box-shadow 0.25s;
    border-bottom: 1px solid transparent;
    min-height: 48px; /* 触摸目标 */
    position: sticky;
    top: var(--sticky-top-journal, 210px); /* JS 会精确计算并覆盖此默认值 */
    z-index: 50;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.journal-header:hover {
    background: var(--color-bg);
}
.journal-header.collapsed {
    border-bottom-color: transparent;
}

/* 期刊标题吸顶时的紧凑样式 */
.journal-header.pinned {
    padding: 6px 20px;
    min-height: auto;
    gap: 8px;
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.journal-header.pinned .journal-name {
    font-size: 14px;
}
.journal-header.pinned .journal-name-en {
    display: none;
}
.journal-header.pinned .journal-count {
    font-size: 11px;
    padding: 1px 8px;
}
.journal-header.pinned .journal-toggle {
    font-size: 10px;
}

.journal-name {
    font-size: 16px;
    font-weight: 600;
    flex: 1;
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
}

.journal-name-en {
    font-size: 13px;
    font-weight: 400;
    color: var(--color-text-muted);
    font-style: italic;
}

.journal-count {
    font-size: 13px;
    color: var(--color-text-secondary);
    background: var(--color-bg);
    padding: 2px 10px;
    border-radius: 12px;
    white-space: nowrap;
}

.journal-toggle {
    font-size: 12px;
    color: var(--color-text-muted);
    transition: transform 0.2s;
    width: 20px;
    text-align: center;
}
.journal-header.collapsed .journal-toggle {
    transform: rotate(-90deg);
}

.journal-articles {
    padding: 4px 0;
}
.journal-header.collapsed + .journal-articles {
    display: none;
}

/* 文章卡片 */
.article-card {
    padding: 18px 20px;
    border-bottom: 1px solid var(--color-border);
    transition: background 0.15s;
}
.article-card:last-child {
    border-bottom: none;
}
.article-card:hover {
    background: var(--color-bg);
}
.article-card.hidden {
    display: none;
}
.article-card.highlight {
    background: #fef9c3;
}

.article-header {
    margin-bottom: 8px;
}

.article-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--color-text);
    word-break: break-word;
}

.article-title-en {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-top: 4px;
    font-style: italic;
    word-break: break-word;
    line-height: 1.5;
}

.article-meta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.meta-authors {
    color: var(--color-text);
}

.meta-lang {
    font-size: 12px;
    padding: 1px 8px;
    border-radius: 4px;
    background: var(--color-bg);
}
.meta-lang.zh {
    color: #dc2626;
    background: #fef2f2;
}
.meta-lang.en {
    color: var(--color-accent);
    background: var(--color-accent-light);
}

/* 摘要 */
.article-abstract {
    margin-bottom: 12px;
}

.abstract-text {
    font-size: 14px;
    line-height: 1.75;
    color: var(--color-text-secondary);
    word-break: break-word;
}

.abstract-text.zh {
    color: var(--color-text);
    margin-bottom: 8px;
}

.abstract-en-wrapper {
    margin-top: 8px;
}

.en-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-family: inherit;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 8px;
}
.en-toggle-btn:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.en-toggle-icon {
    font-size: 11px;
    transition: transform 0.2s;
    display: inline-block;
}

.abstract-en-wrapper[data-collapsed="false"] .en-toggle-icon {
    transform: rotate(90deg);
}

.abstract-en-wrapper .abstract-text.en {
    color: var(--color-text-secondary);
    font-size: 13.5px;
    line-height: 1.75;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, margin 0.3s ease;
}

/* 默认折叠状态 */
.abstract-en-wrapper[data-collapsed="true"] .abstract-text.en {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
}

/* 展开状态 */
.abstract-en-wrapper[data-collapsed="false"] .abstract-text.en {
    max-height: 2000px;
    opacity: 1;
    margin-top: 4px;
    padding-top: 8px;
    border-top: 1px dashed var(--color-border);
}

.en-label {
    font-size: 12px;
    font-weight: 500;
}

.abstract-empty {
    font-size: 14px;
    color: var(--color-text-muted);
    font-style: italic;
}

/* 操作栏 */
.article-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.action-link {
    font-size: 13px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.action-link:hover {
    background: var(--color-card);
    border-color: var(--color-accent);
    color: var(--color-accent);
    text-decoration: none;
}
.action-link.primary {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}
.action-link.primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--color-text-muted);
}
.empty-icon {
    font-size: 64px;
    margin-bottom: 16px;
}
.empty-state h3 {
    font-size: 20px;
    color: var(--color-text);
    margin-bottom: 8px;
}
.empty-state p {
    font-size: 15px;
}

/* ===== 底部 ===== */
.site-footer {
    background: var(--color-card);
    border-top: 1px solid var(--color-border);
    padding: 32px 0;
    margin-top: auto;
}

.footer-main {
    text-align: center;
    margin-bottom: 24px;
}
.footer-main p {
    font-size: 14px;
    color: var(--color-text-secondary);
}
.footer-source {
    margin-top: 6px;
    font-size: 13px;
}

.footer-archives {
    max-width: 600px;
    margin: 0 auto;
}
.footer-archives h4 {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
    text-align: center;
}

.archive-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.archive-link {
    font-size: 13px;
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: all 0.2s;
}
.archive-link:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent);
    text-decoration: none;
}
.archive-link.current {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
}

.archive-more {
    font-size: 12px;
    color: var(--color-text-muted);
    padding: 5px 0;
}

/* ===== 响应式 ===== */
@media (max-width: 640px) {
    .container {
        padding: 0 12px;
        max-width: 100%;
    }

    .site-header {
        padding: 14px 0 12px;
        position: relative;
    }
    .site-title {
        font-size: 18px;
    }
    .site-subtitle {
        font-size: 12px;
    }
    .header-meta {
        margin-top: 10px;
        gap: 8px;
    }
    .week-badge {
        font-size: 12px;
        padding: 2px 8px;
    }
    .week-range {
        font-size: 13px;
    }
    .gen-time {
        display: none;
    }

    .stats-bar {
        padding: 14px 0;
    }
    .stats-bar .container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 12px 16px;
    }
    .stat-item {
        align-items: center;
    }
    .stat-number {
        font-size: 22px;
    }
    .stat-label {
        font-size: 12px;
    }

    .control-bar {
        position: sticky;
        top: var(--sticky-top-control, 0px);
        z-index: 85;
        padding: 12px 0;
    }
    .control-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    .search-box {
        max-width: none;
    }
    .search-box input {
        padding: 10px 32px 10px 12px;
        font-size: 16px; /* 防止 iOS 缩放 */
    }
    .filter-group {
        display: grid;
        grid-template-columns: 1fr auto auto;
        gap: 8px;
    }
    .journal-select {
        min-width: 0;
        max-width: 100%;
        padding: 8px 10px;
        font-size: 12px;
    }
    .btn-small {
        padding: 8px 10px;
        white-space: nowrap;
        font-size: 11px;
    }

    .journal-section {
        margin-bottom: 12px;
        border-radius: var(--radius-sm);
    }
    .journal-header {
        padding: 12px 14px;
        position: sticky;
        top: var(--sticky-top-journal, 48px); /* JS 会精确计算并覆盖 */
        z-index: 45;
        border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    }
    .journal-name {
        font-size: 14px;
        gap: 6px;
    }
    .journal-name-en {
        font-size: 11px;
    }
    .journal-count {
        font-size: 12px;
        padding: 1px 8px;
    }

    /* 移动端吸顶紧凑样式 */
    .journal-header.pinned {
        padding: 5px 14px;
        min-height: auto;
        border-radius: 0;
    }
    .journal-header.pinned .journal-name {
        font-size: 13px;
    }
    .journal-header.pinned .journal-name-en {
        display: none;
    }
    .journal-header.pinned .journal-count {
        font-size: 11px;
        padding: 1px 6px;
    }
    .journal-header.pinned .journal-toggle {
        font-size: 10px;
    }

    .article-card {
        padding: 14px 12px;
    }
    .article-title {
        font-size: 15px;
        line-height: 1.55;
    }
    .article-title-en {
        font-size: 13px;
    }
    .article-meta {
        gap: 8px 12px;
        font-size: 12px;
    }
    .meta-authors {
        max-width: 100%;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .meta-lang {
        font-size: 11px;
        padding: 1px 6px;
    }

    .abstract-text {
        font-size: 14px;
        line-height: 1.7;
    }
    .abstract-text.en {
        font-size: 13px;
    }

    .en-toggle-btn {
        padding: 5px 10px;
        font-size: 12px;
    }

    .article-actions {
        gap: 8px;
    }
    .action-link {
        font-size: 13px;
        padding: 7px 12px;
        min-height: 36px; /* 触摸目标 */
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 100%;
    }

    .site-footer {
        padding: 24px 0;
    }
    .archive-list {
        gap: 6px;
    }
    .archive-link {
        font-size: 12px;
        padding: 4px 10px;
    }
}

/* ===== 打印优化 ===== */
@media print {
    .site-header,
    .control-bar,
    .site-footer {
        display: none;
    }
    .article-card {
        break-inside: avoid;
        border-bottom: 1px solid #ddd;
    }
}