/* ========================================
   SCROLL PROGRESS BAR
   ======================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 1001;
    background: rgba(255,255,255,0.1);
}

.scroll-progress::after {
    content: '';
    position: absolute;
    inset: 0;
    transform: scaleX(0);
    transform-origin: left;
    background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
    transition: transform 0.1s linear;
}

.scroll-progress.scrolled::after {
    transform: scaleX(var(--scroll-progress, 0));
}

/* ========================================
   ARTICULATE ASIAN - L3 DESIGN SYSTEM
   ARTICLE DETAIL PAGE STYLES
   ======================================== */

/* ========================================
   ARTICLE HERO
   ======================================== */
.article-hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: flex-end;
    padding: var(--space-4xl) 0;
    background: linear-gradient(135deg, #0a0f1a 0%, #1a365d 50%, #0f2342 100%);
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 70%, rgba(197, 48, 48, 0.2) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 30%, rgba(26, 54, 93, 0.3) 0%, transparent 40%);
}

.article-hero.bg-chongqing {
    background: linear-gradient(135deg, #0a0f1a 0%, #1a365d 50%, #c53030 100%);
}

.article-hero.bg-chongqing::before {
    background: radial-gradient(ellipse at 30% 70%, rgba(197, 48, 48, 0.3) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 30%, rgba(212, 165, 116, 0.15) 0%, transparent 40%);
}

.article-hero.bg-tips {
    background: linear-gradient(135deg, #1a365d 0%, #0a0f1a 100%);
}

.article-hero.bg-tips::before {
    background: radial-gradient(ellipse at 50% 50%, rgba(212, 165, 116, 0.2) 0%, transparent 60%);
}

.article-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.4;
}

.article-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 15, 26, 1) 0%, rgba(10, 15, 26, 0.6) 50%, rgba(10, 15, 26, 0.3) 100%);
}

.article-hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
}

.article-category-tag {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.article-category-tag.gold {
    background: var(--color-gold);
    color: var(--color-background);
}

.article-hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: white;
    margin-bottom: var(--space-lg);
    line-height: 1.1;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* ========================================
   ARTICLE FEATURED IMAGE
   ======================================== */
.article-featured-image {
    position: relative;
    margin-top: -100px;
    margin-bottom: var(--space-3xl);
    border-radius: 16px;
    overflow: hidden;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--shadow-lg);
}

.article-featured-image img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

/* ========================================
   ARTICLE BODY
   ======================================== */
.article-body {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.article-lead {
    font-size: 1.25rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.article-content h2 {
    font-size: 1.75rem;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-lg);
    color: white;
}

.article-content h3 {
    font-size: 1.25rem;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--color-gold);
}

.article-content p {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.article-content ul, .article-content ol {
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
    padding-left: var(--space-lg);
}

.article-content li {
    margin-bottom: var(--space-sm);
    line-height: 1.7;
}

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

.article-content a {
    color: var(--color-gold);
    text-decoration: underline;
}

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

/* Tables */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-xl) 0;
    background: var(--color-surface);
    border-radius: 8px;
    overflow: hidden;
}

.article-content th, .article-content td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.article-content th {
    background: var(--color-primary);
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

.article-content td {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.article-content tr:hover td {
    background: rgba(255,255,255,0.02);
}

/* ========================================
   ARTICLE COMPONENTS
   ======================================== */
.cta-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-accent);
    border-radius: 12px;
    padding: var(--space-xl);
    margin: var(--space-2xl) 0;
}

.cta-box h3 {
    color: white;
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.cta-box p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.cta-box-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.info-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
}

.info-box h4 {
    color: var(--color-gold);
    margin-bottom: var(--space-sm);
}

.alert-info {
    background: rgba(212, 165, 116, 0.1);
    border: 1px solid var(--color-gold);
    border-left: 4px solid var(--color-gold);
    border-radius: 8px;
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
}

.alert-info strong {
    color: var(--color-gold);
}

/* ========================================
   ARTICLE SHARE & TAGS
   ======================================== */
.article-share {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-2xl);
}

.article-share span {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.share-buttons {
    display: flex;
    gap: var(--space-sm);
}

.share-buttons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.share-buttons a:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border);
}

.article-tags span {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.article-tags a {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: var(--color-surface);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.article-tags a:hover {
    background: var(--color-accent);
    color: white;
}

/* ========================================
   ARTICLE NAVIGATION
   ======================================== */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    margin: var(--space-2xl) 0;
}

.article-nav-prev, .article-nav-next {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.article-nav-next { text-align: right; }

.article-nav span {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.article-nav a {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.article-nav a:hover { color: var(--color-gold); }

/* ========================================
   RELATED ARTICLES
   ======================================== */
.related-articles {
    padding: var(--space-3xl) 0;
    background: var(--color-surface);
}

.related-articles h2 {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--space-lg);
}

@media (min-width: 768px) {
    .related-grid { grid-template-columns: repeat(3, 1fr); }
}

.related-card {
    background: var(--color-background);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.related-card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
}

.related-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.related-card:hover .related-card-image img { transform: scale(1.05); }

.related-card-content {
    padding: var(--space-lg);
}

.related-card-title {
    font-size: 1rem;
    color: var(--color-text);
    line-height: 1.4;
}

.related-card-title a:hover { color: var(--color-gold); }