/* ===== 基础样式 · 与 JW-Yuan.github.io style 主色一致 ===== */
:root {
    --primary-color: #2d5016;
    --secondary-color: #4a7c2a;
    --accent-color: #6b8e3f;
    --primary-dark: #1d3a0f;
    --primary-mid: #4a7c2a;
    --primary-light: #cfe0c8;
    --primary-muted: #eef3ea;
    --bg-color: #f2f6ee;
    --card-bg: #fafcf8;
    --text-color: #243218;
    --text-light: #556b45;
    --border-color: #c9d4b8;
    --shadow: 0 1px 3px rgba(45, 80, 22, 0.08);
    --shadow-lg: 0 12px 28px -8px rgba(45, 80, 22, 0.13);
    --radius: 8px;
    --radius-lg: 12px;
}

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

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

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Header ===== */
.header {
    background: var(--primary-color);
    color: #f7f5eb;
    padding: 50px 0;
    text-align: center;
    box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.07);
}

.header-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.header-title-row h1 {
    font-size: 2.5rem;
    margin: 0;
    font-weight: 700;
}

.header-github-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #f7f5eb;
    opacity: 0.9;
    line-height: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.header-github-link:hover {
    opacity: 1;
    transform: scale(1.07);
}

.header-github-link svg {
    width: 34px;
    height: 34px;
    display: block;
}

.header-start {
    font-size: 0.95rem;
    opacity: 0.88;
    margin: 0 auto 12px;
    font-weight: 400;
    letter-spacing: 0.02em;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 8px;
}

/* 单行展示，窄屏横向滚动 */
.desc {
    font-size: 0.95rem;
    opacity: 0.8;
    margin: 0 auto;
    white-space: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    max-width: min(100%, calc(100vw - 40px));
    padding: 0 2px 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

/* ===== Navigation Bar ===== */
.nav-bar {
    background: rgba(250, 251, 245, 0.94);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* ===== Calendar ===== */
.calendar-wrapper {
    position: relative;
}

.calendar-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.calendar-btn:hover {
    background: var(--primary-muted);
    border-color: var(--primary-mid);
}

.calendar-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 16px;
    min-width: 280px;
    display: none;
    z-index: 200;
}

.calendar-dropdown.show {
    display: block;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-weight: 600;
}

.cal-nav {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    color: var(--text-light);
    transition: all 0.2s;
}

.cal-nav:hover:not(:disabled) {
    background: var(--primary-muted);
    color: var(--primary-color);
}

.cal-nav:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.calendar-select-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.calendar-select {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 0.9rem;
    cursor: pointer;
    min-width: 5.5rem;
}

.calendar-select:focus {
    outline: 2px solid var(--primary-light);
    border-color: var(--primary-mid);
}

.calendar-select-sep {
    font-size: 0.85rem;
    color: var(--text-light);
}

.calendar-month-label {
    font-weight: 600;
    color: var(--text-color);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.cal-weekday {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-light);
    padding: 8px 0;
    font-weight: 600;
}

.cal-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    border: none;
    background: none;
}

.cal-day:not(:disabled):hover {
    background: var(--primary-muted);
}

.cal-day.today:not(:disabled) {
    box-shadow: inset 0 0 0 2px var(--primary-mid);
}

.cal-day.has-papers {
    position: relative;
    font-weight: 600;
    color: var(--primary-dark);
}

.cal-day.has-papers::after {
    content: '';
    position: absolute;
    bottom: 4px;
    width: 4px;
    height: 4px;
    background: var(--primary-mid);
    border-radius: 50%;
}

.cal-day.has-papers.today::after {
    background: var(--primary-dark);
}

.cal-day.selected:not(:disabled) {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-weight: 700;
}

.cal-day.other-month {
    color: var(--text-light);
    opacity: 0.35;
    pointer-events: none;
}

.cal-day.cal-day--no-data {
    color: #b0b59a;
    background: #f0f2e6;
    cursor: not-allowed;
    opacity: 0.7;
    font-weight: 400;
}

.cal-day.cal-day--no-data:hover {
    background: #f0f2e6;
}

.cal-day:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.cal-day.cal-day--no-data:disabled {
    opacity: 0.55;
}

/* ===== Today Button ===== */
.today-btn {
    padding: 10px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.today-btn:hover {
    background: var(--primary-dark);
}

/* ===== Filter Buttons ===== */
.filter-wrapper {
    display: flex;
    gap: 8px;
    margin-left: auto;
}

.filter-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.filter-btn:hover {
    background: var(--bg-color);
}

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

/* ===== Papers Container ===== */
.papers-container {
    padding: 30px 0;
}

.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Category Section ===== */
.category-section {
    margin-bottom: 40px;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
}

.category-icon {
    font-size: 1.5rem;
}

.category-title {
    font-size: 1.4rem;
    font-weight: 600;
}

.category-count {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    margin-left: auto;
}

/* ===== Paper Card ===== */
.paper-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 16px;
    overflow: hidden;
    transition: box-shadow 0.2s, border-color 0.2s;
    border: 1px solid var(--border-color);
    cursor: pointer;
}

.paper-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-mid);
}

.paper-card:focus {
    outline: 2px solid var(--primary-mid);
    outline-offset: 2px;
}

.paper-card--compact .paper-header {
    padding-bottom: 12px;
}

.paper-card--compact .paper-title {
    margin-bottom: 8px;
}

.paper-card-preview {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.55;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.paper-card-hint {
    margin-top: 12px;
    font-size: 0.8rem;
    color: var(--primary-mid);
    font-weight: 500;
}

.paper-header {
    padding: 20px 20px 15px;
    border-bottom: 1px solid var(--border-color);
}

.paper-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 12px;
    line-height: 1.4;
}

.paper-meta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    font-size: 0.85rem;
    color: var(--text-light);
}

.paper-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.paper-meta a {
    color: var(--primary-color);
    text-decoration: none;
}

.paper-meta a:hover {
    text-decoration: underline;
}

.paper-meta--stacked {
    display: block;
}

.paper-meta-line {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}

.paper-meta-line:last-child {
    margin-bottom: 0;
}

.paper-keywords {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--primary-dark);
    background: color-mix(in srgb, var(--primary-light) 65%, #fff);
    border: 1px solid color-mix(in srgb, var(--primary-mid) 30%, #fff);
    border-radius: 999px;
    padding: 3px 10px;
}

.source-badge {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.source-conference {
    background: #dbe8d4;
    background: color-mix(in srgb, var(--primary-color) 22%, #fff);
    color: var(--primary-dark);
}

.source-journal {
    background: #d2e2c8;
    background: color-mix(in srgb, var(--secondary-color) 24%, #fff);
    color: var(--primary-color);
}

.source-arxiv {
    background: #dde8cc;
    background: color-mix(in srgb, var(--accent-color) 26%, #fff);
    color: var(--primary-dark);
}

/* ===== Paper Content ===== */
.paper-content {
    padding: 15px 20px;
}

.paper-section {
    margin-bottom: 16px;
}

.paper-section:last-child {
    margin-bottom: 0;
}

.section-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.section-content {
    font-size: 0.95rem;
    color: var(--text-color);
    line-height: 1.7;
}

/* ===== Abstract Section (list view 不再使用折叠；详情在弹窗) ===== */
.abstract-section {
    background: var(--primary-muted);
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
}

.abstract-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--primary-color);
    user-select: none;
}

.abstract-toggle:hover {
    color: var(--primary-dark);
}

.abstract-toggle-icon {
    transition: transform 0.2s;
}

.abstract-toggle.expanded .abstract-toggle-icon {
    transform: rotate(180deg);
}

.abstract-content {
    margin-top: 12px;
    display: none;
}

.abstract-content.show {
    display: block;
}

.abstract-original {
    background: #f9f8f2;
    padding: 15px;
    border-radius: var(--radius);
    border-left: 3px solid var(--primary-color);
    margin-bottom: 12px;
    font-style: italic;
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

.abstract-translated {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.empty-state h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.empty-state p {
    max-width: 400px;
    margin: 0 auto;
}

/* ===== Date Display ===== */
.date-display {
    text-align: center;
    padding: 20px 0;
    margin-bottom: 20px;
}

.date-display h2 {
    font-size: 1.5rem;
    color: var(--text-color);
}

.date-display .weekday {
    color: var(--text-light);
    font-size: 1rem;
}

/* ===== Footer ===== */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
}

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

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

/* ===== Paper detail page（与整站同底，不用大块色底） ===== */
.paper-detail-page {
    background: var(--bg-color);
    min-height: calc(100vh - 200px);
    padding-bottom: 60px;
}

.detail-page-header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.back-btn:hover {
    background: var(--primary-muted);
    border-color: var(--accent-color);
    color: var(--primary-dark);
}

.detail-page-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.detail-page-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-dark);
    line-height: 1.4;
    margin-bottom: 24px;
}

#detail-page-body .paper-meta {
    margin-bottom: 24px;
    padding: 0 0 18px;
    background: none;
    border-bottom: 1px solid var(--border-color);
}

#detail-page-body .paper-section {
    margin-bottom: 28px;
}

#detail-page-body .section-title {
    font-size: 1.1rem;
    margin-bottom: 12px;
}

#detail-page-body .section-content {
    font-size: 1rem;
    line-height: 1.8;
}

#detail-page-body .abstract-original {
    background: transparent;
    border-left-color: var(--border-color);
    color: var(--text-color);
    font-style: normal;
}

#detail-page-body .abstract-section {
    background: none;
    border: none;
    border-top: 1px solid var(--border-color);
    padding: 20px 0 0;
    margin-top: 12px;
}

#detail-page-body .paper-arch-image {
    margin-bottom: 28px;
}

#detail-page-body .arch-image-container img {
    max-height: 500px;
}

.paper-modal-body .paper-meta {
    margin-bottom: 16px;
}

.paper-modal-body .paper-section {
    margin-bottom: 18px;
}

.paper-modal-body .abstract-original {
    border-left-color: var(--primary-mid);
}

/* ===== 架构图样式（无衬底色块） ===== */
.paper-arch-image {
    margin-bottom: 24px;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0;
}

.paper-arch-image .section-title {
    margin-bottom: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color);
}

.arch-image-container {
    width: 100%;
    overflow-x: auto;
    background: transparent;
    border-radius: var(--radius);
    padding: 0;
    text-align: center;
}

.arch-image-container img {
    max-width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
    cursor: zoom-in;
    transition: transform 0.2s ease;
}

.arch-image-container img:hover {
    transform: scale(1.02);
}

@media (max-width: 768px) {
    .arch-image-container img {
        max-height: 400px;
    }
}

.detail-list {
    margin: 0;
    padding-left: 1.25rem;
    color: var(--text-color);
    line-height: 1.65;
}

.detail-list li {
    margin-bottom: 0.35rem;
}

.markdown-like ul {
    margin: 0;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .header {
        padding: 30px 0;
    }

    .header-title-row h1 {
        font-size: 1.8rem;
    }

    .header-github-link svg {
        width: 28px;
        height: 28px;
    }

    .header-start {
        font-size: 0.88rem;
        padding: 0 8px;
    }

    .subtitle {
        font-size: 1rem;
    }

    .nav-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-wrapper {
        margin-left: 0;
        justify-content: center;
        flex-wrap: wrap;
    }

    .calendar-dropdown {
        left: 50%;
        transform: translateX(-50%);
    }

    .paper-meta {
        flex-direction: column;
        gap: 5px;
    }

    .category-header {
        flex-wrap: wrap;
    }

    .category-count {
        margin-left: 0;
    }
}

/* ===== Markdown Content Styling ===== */
.markdown-content h1,
.markdown-content h2,
.markdown-content h3 {
    margin: 0;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
}

.markdown-content th,
.markdown-content td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.markdown-content th {
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.85rem;
}

.markdown-content tr:hover {
    background: var(--bg-color);
}

.markdown-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 20px 0;
}

.markdown-content blockquote {
    margin: 0;
    padding: 0;
}

/* ===== Markdown 内联（**加粗**、`代码`、链接）===== */
.md-inline strong {
    font-weight: 700;
    color: var(--primary-dark);
}

.md-inline em {
    font-style: italic;
}

.md-inline a {
    color: var(--secondary-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.md-inline a:hover {
    color: var(--primary-color);
}

.md-inline-code,
.md-inline code.md-inline-code {
    font-family: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, Consolas, monospace;
    font-size: 0.88em;
    background: var(--primary-muted);
    padding: 0.1em 0.35em;
    border-radius: 4px;
    color: var(--primary-dark);
}

.paper-title.md-inline strong {
    font-weight: 700;
}

.paper-modal-title .md-inline strong,
.paper-modal-title strong {
    font-weight: 700;
    color: inherit;
}