/* Base styles */
:root {
    --primary-color: #1a1a1a;
    --secondary-color: #6b7280;
    --background-color: #f9fafb;
    --surface-color: #ffffff;
    --border-color: #e5e7eb;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-light: #eff6ff;
    --timeline-line: #d1d5db;
    --dot-color: #2563eb;
}

[data-theme="dark"] {
    --primary-color: #f3f4f6;
    --secondary-color: #9ca3af;
    --background-color: #111827;
    --surface-color: #1f2937;
    --border-color: #374151;
    --accent-color: #60a5fa;
    --accent-hover: #93c5fd;
    --accent-light: #1e3a5f;
    --timeline-line: #4b5563;
    --dot-color: #60a5fa;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--primary-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
}

/* Header */
header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    transition: background-color 0.3s ease;
}

header h1 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

header nav a {
    color: var(--secondary-color);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

header nav a:hover {
    color: var(--accent-color);
}

main {
    padding: 2rem;
    max-width: 960px;
    margin: 0 auto;
}

/* Page headings */
main > h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin: 0 0 1.5rem 0;
}

/* Newspaper list */
.newspaper-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.newspaper-item {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.15s ease;
}

.newspaper-item:hover {
    border-color: var(--accent-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.newspaper-info h2 {
    margin: 0 0 0.25rem 0;
    font-size: 1rem;
    font-weight: 600;
}

.newspaper-info h2 a {
    color: var(--primary-color);
    text-decoration: none;
}

.newspaper-info h2 a:hover {
    color: var(--accent-color);
}

.newspaper-info p {
    margin: 0;
    color: var(--secondary-color);
    font-size: 0.85rem;
}

.status-success { color: #16a34a; font-weight: 600; }
.status-pending { color: #f59e0b; font-weight: 600; }

.pull-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    padding: 0.4rem 0.85rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background-color 0.15s ease;
}

.pull-btn:hover {
    background: var(--accent-hover);
}

/* Timeline Layout */
.timeline {
    position: relative;
    padding-left: 3rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 1.25rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--timeline-line);
    border-radius: 1px;
}

.timeline-date {
    position: relative;
    margin: 2rem 0 0.75rem;
}

.timeline-date:first-child {
    margin-top: 0.5rem;
}

.timeline-date::before {
    content: '';
    position: absolute;
    left: -2.15rem;
    top: 0.35rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--dot-color);
    border: 3px solid var(--background-color);
    box-shadow: 0 0 0 2px var(--dot-color);
    z-index: 2;
}

.date-label {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--primary-color);
    letter-spacing: -0.01em;
}

.date-count {
    margin-left: 0.6rem;
    font-size: 0.8rem;
    color: var(--secondary-color);
    font-weight: 400;
}

/* Article cards in timeline */
.article-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.article-item {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin-bottom: 0.5rem;
    transition: all 0.15s ease;
}

.article-item:hover {
    border-color: var(--accent-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transform: translateY(-1px);
}

.article-item h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.article-item h3 a {
    color: var(--primary-color);
    text-decoration: none;
}

.article-item h3 a:hover {
    color: var(--accent-color);
}

.article-summary {
    color: var(--secondary-color);
    font-size: 0.875rem;
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-date {
    color: var(--secondary-color);
    font-size: 0.8rem;
    margin: 0.25rem 0;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin: 1.5rem 0;
    padding: 1rem 0;
    border-top: 1px solid var(--border-color);
}

.pagination a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
}

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

.pagination span {
    color: var(--secondary-color);
    font-size: 0.85rem;
}

/* Article detail view */
.article-view {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.article-source {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.article-view h1 {
    margin: 0 0 1rem 0;
    font-size: 1.75rem;
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.article-meta {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.article-meta time,
.article-meta span {
    font-size: 0.85rem;
    color: var(--secondary-color);
}

.article-meta a {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.85rem;
    word-break: break-all;
}

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

.article-content {
    font-size: 1.05rem;
    line-height: 1.8;
}

.article-text {
    white-space: pre-wrap;
    color: var(--primary-color);
}

.article-text p {
    margin: 0 0 1rem 0;
}

.archived-html {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-top: 1rem;
    background: var(--background-color);
}

.article-actions {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 1rem;
    align-items: center;
}

.back-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    background: var(--accent-light);
    border-radius: 6px;
    transition: all 0.15s ease;
}

.back-link:hover {
    background: var(--accent-color);
    color: white;
    text-decoration: none;
}

/* Disabled feeds */
.source-disabled {
    color: var(--secondary-color);
    text-decoration: line-through;
}

.status-badge {
    display: inline-block;
    background: #ef4444;
    color: white;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.7rem;
    margin-left: 0.5rem;
}

.disable-reason {
    color: var(--secondary-color);
    font-size: 0.8rem;
    margin-top: 0.25rem;
    font-style: italic;
}

/* Status page */
.status-page {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.status-page h1 {
    margin: 0 0 1.5rem 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.status-page h2 {
    font-size: 1.1rem;
    margin: 1.5rem 0 1rem;
    font-weight: 600;
}

.status-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.status-item {
    background: var(--background-color);
    border-radius: 8px;
    padding: 1rem;
}

.status-item h2 {
    margin: 0 0 0.25rem;
    font-size: 0.8rem;
    color: var(--secondary-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-item p {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.status-online { color: #16a34a; }
.status-warning { color: #f59e0b; }

/* Not found */
.article-not-found {
    text-align: center;
    padding: 4rem 2rem;
}

.article-not-found h1 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.article-not-found p {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        padding: 0.75rem 1rem;
    }

    main {
        padding: 1rem;
    }

    .timeline {
        padding-left: 2.5rem;
    }

    .timeline::before {
        left: 0.75rem;
    }

    .timeline-date::before {
        left: -1.95rem;
        width: 10px;
        height: 10px;
    }

    .article-view {
        padding: 1.5rem;
    }

    .article-view h1 {
        font-size: 1.35rem;
    }

    .newspaper-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}

/* Print */
@media print {
    header, .pull-btn, .pagination, .article-actions {
        display: none;
    }
    .article-view {
        border: none;
        padding: 0;
        box-shadow: none;
    }
}