:root {
    --color-primary: #1a1a2e;
    --color-accent: #e63946;
    --color-accent-hover: #c1121f;
    --color-bg: #f0f2f5;
    --color-card: #ffffff;
    --color-text: #2d3436;
    --color-muted: #636e72;
    --color-border: #dfe6e9;
    --color-news: #0984e3;
    --color-paper: #6c5ce7;
    --color-title: #2d3436;
    --color-nav: #ffffff;
    --color-footer: rgba(255,255,255,0.7);
    --color-subscribe-btn: #e63946;
    --color-unsubscribe-btn: rgba(255,255,255,0.15);
    --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    --font-size-body: 15px;
    --font-size-title: 24px;
    --font-size-nav: 14px;
    --font-size-footer: 12px;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --radius: 8px;
}

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

body {
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    font-size: var(--font-size-body);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: var(--color-primary);
    color: #fff;
    padding: 20px 0 16px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.site-header .container {
    display: block;
    text-align: center;
    padding: 0 20px;
}

.header-logo-img {
    display: block;
    width: 100%;
    height: auto;
    margin: 0 auto 12px;
}

.site-title {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    text-align: center;
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.main-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 0;
}

.main-nav a {
    color: var(--color-nav);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: var(--font-size-nav);
    transition: all 0.2s;
    margin: 0 8px;
    letter-spacing: 1px;
}

.main-nav a:hover,
.main-nav a.active {
    background: rgba(255,255,255,0.15);
    color: #fff;
}

.header-search {
    display: flex;
    justify-content: center;
    margin-top: 16px;
}

.header-search input {
    padding: 8px 14px;
    border: none;
    border-radius: 4px 0 0 4px;
    font-size: 14px;
    width: 400px;
    outline: none;
}

.header-search button {
    padding: 8px 16px;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    font-size: 14px;
}

/* Homepage hero */
.home-hero {
    text-align: center;
    padding: 50px 20px 40px;
}

.home-date {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.home-summary {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.home-summary-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--color-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--color-text);
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s;
}

.home-summary-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}

.home-summary-item.news { border-bottom: 3px solid var(--color-news); }
.home-summary-item.paper { border-bottom: 3px solid var(--color-paper); }

.home-summary-item .count {
    font-size: 28px;
    font-weight: 700;
}

.home-summary-item.news .count { color: var(--color-news); }
.home-summary-item.paper .count { color: var(--color-paper); }

/* Date Navigation */
.date-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 10px;
}

.nav-arrow {
    color: var(--color-accent);
    text-decoration: none;
    font-size: 14px;
    padding: 8px 16px;
    background: var(--color-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all 0.2s;
}

.nav-arrow:hover { background: var(--color-accent); color: #fff; }
.nav-arrow.disabled { color: var(--color-muted); background: #eee; pointer-events: none; }

.current-date {
    text-align: center;
    display: flex;
    align-items: center;
    gap: 12px;
}

.current-date h2 { font-size: 22px; color: var(--color-primary); }

.current-date input[type="date"] {
    padding: 4px 8px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
}

.refresh-btn {
    padding: 6px 16px;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.refresh-btn:hover { background: var(--color-accent-hover); }
.refresh-btn:disabled { cursor: wait; opacity: 0.8; }
.refresh-btn.loading { background: var(--color-muted); }
.refresh-btn.success { background: #27ae60; }

/* Tabs */
.tab-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.tab-btn {
    padding: 8px 20px;
    background: var(--color-card);
    color: var(--color-text);
    text-decoration: none;
    border-radius: 20px;
    font-size: 14px;
    box-shadow: var(--shadow);
    transition: all 0.2s;
}

.tab-btn:hover { background: var(--color-primary); color: #fff; }
.tab-btn.active { background: var(--color-primary); color: #fff; }

/* Content */
.content-section {
    margin-bottom: 30px;
}

.section-title {
    font-size: 20px;
    padding: 12px 20px;
    margin-bottom: 16px;
    border-radius: var(--radius);
    color: #fff;
}

.news-title { background: var(--color-news); }
.paper-title { background: var(--color-paper); }

.category-group {
    margin-bottom: 20px;
}

.category-name {
    font-size: 16px;
    color: var(--color-primary);
    padding: 8px 0;
    margin-bottom: 10px;
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}

.article-card {
    background: var(--color-card);
    padding: 16px 20px;
    margin-bottom: 12px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--color-news);
    transition: transform 0.15s;
}

.article-card:hover { transform: translateX(4px); }

.paper-card { border-left-color: var(--color-paper); }

.article-title {
    font-size: 16px;
    margin-bottom: 6px;
}

.article-title a {
    color: var(--color-text);
    text-decoration: none;
}

.article-title a:hover { color: var(--color-accent); }

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: 8px;
}

.article-meta .source { color: var(--color-news); font-weight: 500; }
.article-meta .authors { color: var(--color-paper); }

.category-tag {
    background: #f0f0f0;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 12px;
}

.article-summary {
    font-size: 14px;
    color: #555;
    margin-bottom: 8px;
    line-height: 1.6;
}

.source-link {
    font-size: 13px;
    color: var(--color-accent);
    text-decoration: none;
}

.source-link:hover { text-decoration: underline; }

/* Article Detail */
.breadcrumb {
    padding: 16px 0;
    font-size: 14px;
    color: var(--color-muted);
}

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

.article-detail {
    background: var(--color-card);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.article-detail h2 {
    font-size: 24px;
    margin-bottom: 12px;
    line-height: 1.4;
}

.article-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.type-badge {
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    color: #fff;
    font-weight: 500;
}

.type-badge.news { background: var(--color-news); }
.type-badge.paper { background: var(--color-paper); }

.authors-info, .source-info, .original-link {
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--color-muted);
}

.original-link a { color: var(--color-accent); text-decoration: none; }

.article-content {
    margin-top: 20px;
    font-size: 15px;
    line-height: 1.8;
}

.article-content h1, .article-content h2, .article-content h3 {
    margin: 16px 0 8px;
}

.article-content ul, .article-content ol {
    padding-left: 24px;
    margin: 8px 0;
}

.article-content a { color: var(--color-accent); }

.article-nav {
    margin-bottom: 30px;
}

.article-nav a {
    color: var(--color-accent);
    text-decoration: none;
    font-size: 14px;
}

/* Archive */
.page-title {
    font-size: 22px;
    padding: 20px 0 16px;
    color: var(--color-primary);
}

.archive-years {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.year-tab {
    padding: 8px 16px;
    background: var(--color-card);
    border-radius: 20px;
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow);
    font-size: 14px;
}

.year-tab:hover, .year-tab.active { background: var(--color-primary); color: #fff; }

.badge {
    background: rgba(255,255,255,0.2);
    padding: 1px 6px;
    border-radius: 8px;
    font-size: 12px;
    margin-left: 4px;
}

.archive-months {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 24px;
}

.month-card {
    background: var(--color-card);
    padding: 16px;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow);
    transition: all 0.2s;
}

.month-card:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.month-card.active { border-left: 4px solid var(--color-accent); }

.month-name { font-size: 16px; font-weight: 600; display: block; }
.month-stats { font-size: 13px; color: var(--color-muted); }

.archive-dates {
    margin-bottom: 30px;
}

.archive-dates h3 {
    margin-bottom: 12px;
    color: var(--color-primary);
}

.date-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--color-card);
    padding: 12px 20px;
    margin-bottom: 8px;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--color-text);
    box-shadow: var(--shadow);
    transition: all 0.15s;
}

.date-card:hover { transform: translateX(4px); border-left: 4px solid var(--color-accent); }

.date-stats { display: flex; gap: 12px; font-size: 13px; }
.news-badge { color: var(--color-news); }
.paper-badge { color: var(--color-paper); }

/* Search */
.search-page { padding: 20px 0; }

.search-form {
    display: flex;
    max-width: 600px;
    margin: 0 auto 24px;
}

.search-form input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid var(--color-border);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 16px;
    outline: none;
}

.search-form input:focus { border-color: var(--color-accent); }

.search-form button {
    padding: 12px 24px;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    cursor: pointer;
    font-size: 16px;
}

.search-info {
    text-align: center;
    margin-bottom: 20px;
    color: var(--color-muted);
}

.search-result-card {
    background: var(--color-card);
    padding: 16px 20px;
    margin-bottom: 12px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.search-result-card h4 {
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-result-card h4 a { color: var(--color-text); text-decoration: none; }
.search-result-card h4 a:hover { color: var(--color-accent); }

.result-meta {
    display: flex;
    gap: 8px;
    font-size: 13px;
    color: var(--color-muted);
    margin: 6px 0;
}

.result-snippet {
    font-size: 14px;
    color: #555;
    line-height: 1.6;
}

.result-snippet mark, .search-result-card mark {
    background: #fff3cd;
    padding: 1px 3px;
    border-radius: 2px;
}

.error-msg {
    text-align: center;
    color: var(--color-accent);
    margin: 20px 0;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
}

.pagination a {
    color: var(--color-accent);
    text-decoration: none;
    padding: 8px 16px;
    background: var(--color-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.pagination a:hover { background: var(--color-accent); color: #fff; }

.page-info { font-size: 14px; color: var(--color-muted); }

/* Full content inside cards */
.article-full-content {
    font-size: 14px;
    line-height: 1.7;
    color: #444;
    margin: 8px 0;
}

.article-full-content ul, .article-full-content ol {
    padding-left: 20px;
    margin: 4px 0;
}

.article-full-content a {
    color: var(--color-accent);
    word-break: break-all;
}

.article-full-content strong { color: var(--color-text); }

/* Day sections on homepage */
.day-section {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 3px solid var(--color-border);
}

.day-section:last-of-type { border-bottom: none; }

.day-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    margin-bottom: 10px;
}

.day-date {
    font-size: 24px;
    color: var(--color-primary);
    border-bottom: 3px solid var(--color-accent);
    padding-bottom: 4px;
}

.day-stats {
    font-size: 14px;
    color: var(--color-muted);
    background: #f0f0f0;
    padding: 4px 12px;
    border-radius: 12px;
}

/* Older dates buttons */
.older-dates-section {
    margin-top: 30px;
    padding-top: 20px;
}

.older-title {
    font-size: 20px;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.older-dates-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.older-date-btn {
    display: inline-block;
    padding: 10px 20px;
    background: var(--color-card);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    font-size: 14px;
    font-weight: 500;
    border-left: 4px solid var(--color-accent);
    transition: all 0.2s;
}

.older-date-btn:hover {
    background: var(--color-accent);
    color: #fff;
    transform: translateY(-2px);
}

.page-summary {
    text-align: center;
    padding: 16px 0;
    font-size: 15px;
    color: var(--color-muted);
}

/* Back to home link */
.back-home {
    margin: 30px 0;
}

.back-home a {
    color: var(--color-accent);
    text-decoration: none;
    font-size: 15px;
}

.back-home a:hover { text-decoration: underline; }

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

/* Footer */
.site-footer {
    background: var(--color-primary);
    color: var(--color-footer);
    padding: 16px 0;
    margin-top: 40px;
    font-size: var(--font-size-footer);
    text-align: center;
    font-size: 13px;
}

/* Subscribe Section */
.subscribe-section {
    margin: 16px 0 12px;
    padding: 16px 0 12px;
    border-top: 1px solid rgba(255,255,255,0.15);
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

.subscribe-title {
    font-size: 14px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 10px;
    font-weight: 500;
}

.subscribe-form {
    display: inline-flex;
    max-width: 420px;
    width: 100%;
}

.subscribe-form input {
    flex: 1;
    padding: 8px 14px;
    border: 1px solid rgba(255,255,255,0.3);
    border-right: none;
    border-radius: 4px 0 0 4px;
    font-size: 13px;
    outline: none;
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.subscribe-form input::placeholder {
    color: rgba(255,255,255,0.5);
}

.subscribe-form input:focus {
    border-color: var(--color-accent);
    background: rgba(255,255,255,0.15);
}

.subscribe-form button {
    padding: 8px 20px;
    background: var(--color-subscribe-btn);
    color: #fff;
    border: none;
    border-radius: 0;
    cursor: pointer;
    font-size: 13px;
    white-space: nowrap;
    transition: background 0.2s;
}

.subscribe-form button:hover {
    background: var(--color-accent-dark, #c1121f);
}

.subscribe-form button.unsub-btn {
    background: var(--color-unsubscribe-btn);
    border-left: 1px solid rgba(255,255,255,0.2);
    border-radius: 0 4px 4px 0;
}

.subscribe-form button.unsub-btn:hover {
    background: rgba(255,255,255,0.25);
}

.subscribe-msg {
    font-size: 12px;
    margin-top: 6px;
    color: #4ecdc4;
    min-height: 18px;
}

/* Disclaimer */
.disclaimer {
    font-size: 12px;
    color: rgba(255,255,255,0.5);
    margin-top: 6px;
}

/* Language Selector */
.lang-selector {
    display: inline-block;
    margin-left: 12px;
}

.lang-selector select {
    padding: 6px 10px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 4px;
    background: rgba(255,255,255,0.1);
    color: #fff;
    font-size: 13px;
    cursor: pointer;
    outline: none;
}

.lang-selector select option {
    background: var(--color-primary);
    color: #fff;
}

/* RTL Support for Arabic */
[dir="rtl"] {
    direction: rtl;
    text-align: right;
}

[dir="rtl"] .main-nav {
    direction: ltr;
}

[dir="rtl"] .article-card {
    border-left: none;
    border-right: 4px solid var(--color-news);
}

[dir="rtl"] .article-card:hover {
    transform: translateX(-4px);
}

[dir="rtl"] .paper-card {
    border-right-color: var(--color-paper);
}

[dir="rtl"] .date-nav {
    direction: rtl;
}

[dir="rtl"] .search-form input {
    border-right: 2px solid var(--color-border);
    border-left: none;
    border-radius: 0 var(--radius) var(--radius) 0;
}

[dir="rtl"] .search-form button {
    border-radius: var(--radius) 0 0 var(--radius);
}

[dir="rtl"] .header-search input {
    border-radius: 0 4px 4px 0;
}

[dir="rtl"] .header-search button {
    border-radius: 4px 0 0 4px;
}

[dir="rtl"] .article-content ul,
[dir="rtl"] .article-content ol,
[dir="rtl"] .article-full-content ul,
[dir="rtl"] .article-full-content ol {
    padding-left: 0;
    padding-right: 24px;
}

/* Responsive */
@media (max-width: 768px) {
    .site-title { font-size: 18px; letter-spacing: 1px; }
    .main-nav a { margin: 2px 4px; font-size: 14px; }
    .header-search input { width: 180px; }
    .date-nav { flex-direction: column; gap: 10px; }
    .article-detail { padding: 16px; }
    .article-detail h2 { font-size: 20px; }
    .tab-buttons { justify-content: center; }
    .home-date { font-size: 22px; }
    .home-summary { gap: 12px; }
    .home-summary-item { padding: 10px 20px; font-size: 14px; }
    .home-summary-item .count { font-size: 22px; }
}