/**
 * AI Updates Asia - Main Stylesheet
 * Mobile-first / Zero deps / System font stack
 */
:root{
--color-primary:#0f0f23;--color-primary-light:#1a1a3e;--color-accent:#e94560;--color-accent-hover:#d63852;
--color-bg:#f0f2f5;--color-card:#ffffff;--color-text:#1a1a2e;--color-text-secondary:#6b7280;
--color-border:#e5e7eb;--color-tag-bg:#f3f4f6;
--font-system:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans SC",sans-serif;
--font-mono:"SF Mono","Fira Code","Fira Mono","Roboto Mono",monospace;
--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 4px 6px rgba(0,0,0,0.07);--shadow-lg:0 10px 25px rgba(0,0,0,0.1);
--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--sidebar-width:320px;--header-height:64px;--max-width:1280px;--transition:0.2s ease}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-system);font-size:16px;line-height:1.6;color:var(--color-text);background:var(--color-bg);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-accent);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--color-accent-hover)}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font:inherit;color:inherit}
input,textarea{font:inherit;color:inherit}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.content-layout{display:grid;grid-template-columns:1fr;gap:32px;padding:32px 0}
@media(min-width:1024px){.content-layout{grid-template-columns:1fr var(--sidebar-width)}}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:var(--color-primary);box-shadow:0 2px 12px rgba(0,0,0,0.2)}
.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 20px;height:var(--header-height);display:flex;align-items:center;justify-content:space-between}
.header-brand{flex-shrink:0}
.site-logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:22px;letter-spacing:-0.5px}
.site-logo:hover{color:#fff;opacity:0.9}
.logo-icon{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:var(--radius-sm);background:var(--color-accent);font-size:14px;font-weight:800;letter-spacing:1px}
.header-nav{display:flex}
.nav-menu{display:flex;gap:4px}
.nav-menu a{display:block;padding:8px 16px;color:rgba(255,255,255,0.85);font-size:15px;font-weight:500;border-radius:var(--radius-sm);transition:all var(--transition)}
.nav-menu a:hover,.nav-menu .current-menu-item a{color:#fff;background:rgba(255,255,255,0.1)}
.nav-menu .current-menu-item a{font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.header-actions button{color:rgba(255,255,255,0.85);padding:8px;border-radius:var(--radius-sm);transition:all var(--transition)}
.header-actions button:hover{color:#fff;background:rgba(255,255,255,0.1)}
.menu-toggle{display:flex;flex-direction:column;gap:5px;padding:10px 8px}
.menu-bar{display:block;width:22px;height:2px;background:currentColor;border-radius:1px;transition:all var(--transition)}
.nav-close{display:none;position:absolute;top:16px;right:16px;font-size:28px;color:#fff;z-index:101}

/* Mobile menu */
@media(max-width:1023px){
.header-nav{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:var(--color-primary);flex-direction:column;padding:80px 24px 24px;transition:right 0.3s ease;z-index:200;box-shadow:-4px 0 20px rgba(0,0,0,0.3)}
.header-nav.active{right:0}
.header-nav .nav-menu{flex-direction:column;gap:2px}
.header-nav .nav-menu a{font-size:16px;padding:12px 16px}
.nav-close{display:block}
.menu-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:199}
.menu-overlay.active{display:block}
}

/* Search overlay */
.search-overlay{position:fixed;inset:0;background:rgba(15,15,35,0.97);z-index:300;display:flex;align-items:flex-start;justify-content:center;padding-top:15vh;opacity:0;visibility:hidden;transition:all 0.3s ease}
.search-overlay.active{opacity:1;visibility:visible}
.search-overlay-inner{width:100%;max-width:600px;padding:0 24px;position:relative}
.search-overlay .search-form{display:flex;gap:0}
.search-overlay .search-field{flex:1;padding:16px 20px;font-size:20px;background:rgba(255,255,255,0.1);border:2px solid rgba(255,255,255,0.2);border-right:none;border-radius:var(--radius-md) 0 0 var(--radius-md);color:#fff;outline:none}
.search-overlay .search-field:focus{border-color:var(--color-accent)}
.search-overlay .search-field::placeholder{color:rgba(255,255,255,0.4)}
.search-overlay .search-submit{padding:16px 24px;background:var(--color-accent);color:#fff;border-radius:0 var(--radius-md) var(--radius-md) 0;font-size:16px;font-weight:600;transition:background var(--transition)}
.search-overlay .search-submit:hover{background:var(--color-accent-hover)}
.search-close{position:absolute;top:-50px;right:0;color:rgba(255,255,255,0.6);font-size:32px;transition:color var(--transition)}
.search-close:hover{color:#fff}

/* Hero */
.home-hero{padding:24px 0 0}
.hero-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.hero-grid{grid-template-columns:1fr 1fr}.hero-card-1{grid-column:1/-1}}
@media(min-width:1024px){.hero-grid{grid-template-columns:2fr 1fr 1fr;grid-template-rows:auto auto}.hero-card-1{grid-row:1/3}.hero-card-1 .hero-thumb{height:420px}}
.hero-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--color-card);box-shadow:var(--shadow-md)}
.hero-card-1 .hero-thumb{height:260px}
.hero-card-2 .hero-thumb,.hero-card-3 .hero-thumb{height:200px}
.hero-thumb{overflow:hidden}
.hero-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
.hero-card:hover .hero-thumb img{transform:scale(1.05)}
.hero-body{padding:16px 20px 20px}
.hero-cat{display:inline-block;padding:3px 10px;background:var(--color-accent);color:#fff;font-size:11px;font-weight:700;border-radius:3px;text-transform:uppercase;letter-spacing:0.5px;margin-bottom:10px}
.hero-title{font-size:20px;font-weight:800;line-height:1.35;margin-bottom:8px}
.hero-card-1 .hero-title{font-size:26px}
@media(min-width:768px){.hero-card-1 .hero-title{font-size:30px}}
.hero-title a{color:var(--color-text)}
.hero-title a:hover{color:var(--color-accent)}
.hero-meta{font-size:13px;color:var(--color-text-secondary);display:flex;align-items:center;gap:6px}
.meta-sep{color:var(--color-border)}

/* Post cards */
.post-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){.post-grid{grid-template-columns:1fr 1fr}}
.post-card{background:var(--color-card);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow var(--transition)}
.post-card:hover{box-shadow:var(--shadow-md)}
.post-thumb-link{display:block;overflow:hidden}
.post-thumb{width:100%;height:200px;object-fit:cover;transition:transform 0.4s ease}
.post-card:hover .post-thumb{transform:scale(1.05)}
.post-card-body{padding:16px 20px 20px}
.post-card-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:13px;color:var(--color-text-secondary)}
.post-cat-tag{display:inline-block;padding:2px 8px;background:var(--color-tag-bg);color:var(--color-accent);font-size:12px;font-weight:600;border-radius:3px}
.post-card-title{font-size:17px;font-weight:700;line-height:1.4;margin-bottom:8px}
.post-card-title a{color:var(--color-text)}
.post-card-title a:hover{color:var(--color-accent)}
.post-card-excerpt{font-size:14px;color:var(--color-text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

/* Single post */
.single-post{background:var(--color-card);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
.single-header{padding:32px 24px 0}
.single-cat{margin-bottom:12px}
.cat-badge{display:inline-block;padding:4px 12px;background:var(--color-accent);color:#fff;font-size:12px;font-weight:700;border-radius:3px;letter-spacing:0.5px}
.single-title{font-size:24px;font-weight:800;line-height:1.35;margin-bottom:14px;color:var(--color-text)}
@media(min-width:768px){.single-title{font-size:32px}}
.single-meta{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:14px;color:var(--color-text-secondary);margin-bottom:20px}
.single-thumbnail{margin:0 -24px}
.featured-image{width:100%;max-height:500px;object-fit:cover}
.single-content{padding:24px}
.single-content h2,.single-content h3{font-size:22px;font-weight:700;margin:28px 0 14px;color:var(--color-primary)}
.single-content h2{border-bottom:2px solid var(--color-border);padding-bottom:10px}
.single-content p{margin-bottom:18px;font-size:17px;line-height:1.85;color:#333}
.single-content a{color:var(--color-accent);border-bottom:1px solid currentColor}
.single-content a:hover{border-bottom-color:transparent}
.single-content blockquote{margin:20px 0;padding:16px 20px;border-left:4px solid var(--color-accent);background:var(--color-bg);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-style:italic;color:var(--color-text-secondary)}
.single-content code{background:var(--color-tag-bg);padding:2px 6px;border-radius:3px;font-family:var(--font-mono);font-size:0.9em}
.single-content pre{background:var(--color-primary);color:#e5e7eb;padding:20px;border-radius:var(--radius-md);overflow-x:auto;margin:20px 0;font-size:14px;line-height:1.6}
.single-content pre code{background:none;padding:0;color:inherit}
.single-content img{border-radius:var(--radius-sm);margin:16px 0}
.single-content ul,.single-content ol{margin:12px 0 12px 24px}
.single-content li{margin-bottom:6px}
.single-footer{padding:0 24px 24px;border-top:1px solid var(--color-border);margin:0 24px;padding-top:20px}
.single-tags{margin-bottom:12px}
.single-tags a{display:inline-block;padding:3px 10px;background:var(--color-tag-bg);color:var(--color-text-secondary);font-size:12px;border-radius:3px;margin:2px;transition:all var(--transition)}
.single-tags a:hover{background:var(--color-accent);color:#fff}
.single-share{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--color-text-secondary)}
.share-link{padding:4px 12px;border-radius:3px;font-size:12px;font-weight:600;transition:all var(--transition)}
.share-twitter{background:#1da1f2;color:#fff}.share-twitter:hover{background:#0d8bd9;color:#fff}
.share-weibo{background:#e6162d;color:#fff}.share-weibo:hover{background:#c41427;color:#fff}

/* Related */
.related-posts{margin-top:32px}
.section-title{font-size:20px;font-weight:700;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--color-accent);display:inline-block}
.related-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr)}}
.related-card{background:var(--color-card);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm)}
.related-card:hover{box-shadow:var(--shadow-md)}
.related-thumb{width:100%;height:160px;object-fit:cover;transition:transform 0.4s ease}
.related-card:hover .related-thumb{transform:scale(1.05)}
.related-card h4{font-size:15px;font-weight:600;line-height:1.4;padding:12px 14px 6px}
.related-card h4 a{color:var(--color-text)}
.related-card h4 a:hover{color:var(--color-accent)}
.related-card time{display:block;padding:0 14px 14px;font-size:12px;color:var(--color-text-secondary)}

/* Archive */
.archive-header{padding:32px 0 16px}
.archive-title{font-size:26px;font-weight:800;color:var(--color-primary)}
.archive-desc{margin-top:8px;color:var(--color-text-secondary);font-size:15px}
.search-count{margin-bottom:20px;font-size:14px;color:var(--color-text-secondary)}

/* Sidebar */
.site-sidebar{display:flex;flex-direction:column;gap:24px}
.site-sidebar .widget{background:var(--color-card);border-radius:var(--radius-md);padding:20px;box-shadow:var(--shadow-sm)}
.widget-title{font-size:16px;font-weight:700;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--color-accent);color:var(--color-primary)}
.widget-empty{font-size:14px;color:var(--color-text-secondary)}

/* Ads */
.ad-slot{position:relative;text-align:center;border-radius:var(--radius-sm);overflow:hidden}
.ad-label{position:absolute;top:6px;right:8px;font-size:10px;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:0.5px}
.ad-placeholder{display:flex;align-items:center;justify-content:center;background:var(--color-bg);color:var(--color-text-secondary);font-size:14px;border:1px dashed var(--color-border);border-radius:var(--radius-sm)}
.ad-slot-300x250 .ad-placeholder{height:250px}
.ad-slot-adhesion .ad-placeholder{height:100px}

/* Popular */
.popular-item{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--color-border)}
.popular-item:last-child{border-bottom:none}
.popular-rank{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:4px;font-size:13px;font-weight:800;font-family:var(--font-mono);flex-shrink:0}
.rank-1{background:var(--color-accent);color:#fff}
.rank-2{background:#f59e0b;color:#fff}
.rank-3{background:#10b981;color:#fff}
.rank-4,.rank-5{background:var(--color-tag-bg);color:var(--color-text-secondary)}
.popular-link{font-size:14px;font-weight:500;color:var(--color-text);line-height:1.4}
.popular-link:hover{color:var(--color-accent)}

/* Category list */
.category-link{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;color:var(--color-text);transition:all var(--transition)}
.category-link:hover{background:var(--color-bg);color:var(--color-accent)}
.category-count{font-size:12px;color:var(--color-text-secondary);background:var(--color-tag-bg);padding:2px 8px;border-radius:10px;font-weight:600}

/* Pagination */
.pagination{margin-top:32px}
.pagination-inner{display:flex;justify-content:center;gap:6px;flex-wrap:wrap}
.page-numbers{display:flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;border:1px solid var(--color-border);background:var(--color-card);color:var(--color-text);font-size:14px;font-weight:500;border-radius:var(--radius-sm);transition:all var(--transition)}
.page-numbers.current{background:var(--color-accent);color:#fff;border-color:var(--color-accent)}
.page-numbers:hover:not(.current):not(.dots){background:var(--color-primary);color:#fff;border-color:var(--color-primary)}

/* Search highlight */
.search-highlight{background:#fef08a;color:var(--color-text);padding:1px 3px;border-radius:2px;font-weight:600}

/* Empty state */
.no-posts{text-align:center;padding:60px 20px;background:var(--color-card);border-radius:var(--radius-md)}
.no-posts h2{font-size:22px;margin-bottom:10px}
.no-posts p{color:var(--color-text-secondary);margin-bottom:20px}
.no-results{font-size:14px;color:var(--color-text-secondary);text-align:center;padding:20px}

/* Buttons */
.btn{display:inline-block;padding:10px 24px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;transition:all var(--transition)}
.btn-primary{background:var(--color-accent);color:#fff}
.btn-primary:hover{background:var(--color-accent-hover);color:#fff}

/* Search form */
.search-form{display:flex;gap:0}
.search-field{flex:1;padding:10px 16px;border:1px solid var(--color-border);border-right:none;border-radius:var(--radius-sm) 0 0 var(--radius-sm);font-size:14px;outline:none;transition:border-color var(--transition);background:var(--color-card)}
.search-field:focus{border-color:var(--color-accent)}
.search-submit{padding:10px 16px;background:var(--color-accent);color:#fff;border-radius:0 var(--radius-sm) var(--radius-sm) 0;transition:background var(--transition)}
.search-submit:hover{background:var(--color-accent-hover)}

/* 404 */
.error-404{text-align:center;padding:80px 20px}
.error-code{font-size:120px;font-weight:900;color:var(--color-primary);line-height:1;opacity:0.15}
.error-title{font-size:28px;font-weight:700;margin:-20px 0 12px;color:var(--color-text)}
.error-desc{color:var(--color-text-secondary);margin-bottom:24px;font-size:16px}
.error-actions{max-width:400px;margin:0 auto}
.error-actions .search-form{margin-top:20px}

/* Footer */
.site-footer{background:var(--color-primary);color:rgba(255,255,255,0.7);margin-top:48px}
.footer-inner{max-width:var(--max-width);margin:0 auto;padding:48px 20px 24px}
.footer-widgets{display:grid;grid-template-columns:1fr;gap:32px;margin-bottom:32px}
@media(min-width:768px){.footer-widgets{grid-template-columns:repeat(3,1fr)}}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-col p{font-size:14px;line-height:1.7}
.footer-menu{display:flex;flex-direction:column;gap:6px}
.footer-menu a{color:rgba(255,255,255,0.6);font-size:14px;transition:color var(--transition)}
.footer-menu a:hover{color:#fff}
.footer-bottom{padding-top:24px;border-top:1px solid rgba(255,255,255,0.1);text-align:center;font-size:13px}
.footer-bottom a{color:rgba(255,255,255,0.5)}

/* Back to top */
.back-to-top{position:fixed;bottom:24px;right:24px;z-index:50;width:44px;height:44px;background:var(--color-accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:all var(--transition)}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{background:var(--color-accent-hover);transform:translateY(-2px)}

/* Responsive */
@media(min-width:768px){.single-content{padding:32px 40px}.single-header{padding:40px 40px 0}.single-footer{padding:0 40px 40px;margin:0 40px}.single-thumbnail{margin:0 -40px}}
@media(min-width:1024px){.site-sidebar{position:sticky;top:calc(var(--header-height) + 24px);align-self:start}}
@media(max-width:767px){.hero-title{font-size:18px}.hero-card-1 .hero-title{font-size:22px}.post-card-title{font-size:16px}.single-title{font-size:22px}.single-content p{font-size:16px}.archive-title{font-size:22px}}

/* Print */
@media print{.site-header,.site-sidebar,.site-footer,.back-to-top,.related-posts,.single-share{display:none!important}.single-post{box-shadow:none;border:1px solid #ddd}body{font-size:14px;color:#000;background:#fff}a{color:#000;text-decoration:underline}}

/* Footer disclaimer */
.footer-disclaimer{margin-bottom:24px;padding:16px 20px;background:rgba(255,255,255,0.05);border-left:3px solid var(--color-accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:13px;line-height:1.8;color:rgba(255,255,255,0.55)}
.footer-disclaimer strong{color:rgba(255,255,255,0.7)}

/* ============ Monetization ============ */
.aium-ad-wrapper{margin:24px 0;padding:12px;background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-sm);text-align:center;overflow:hidden}
.aium-ad-label{display:block;font-size:11px;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;opacity:.6}
.aium-ad-content{min-height:90px}
.aium-ad-placeholder{padding:32px;color:var(--color-text-secondary);font-size:14px}
.aium-promo-card{display:flex;flex-direction:column;align-items:center;gap:4px;padding:16px;background:linear-gradient(135deg,#f0f4ff,#faf5ff);border-radius:8px;text-decoration:none!important;transition:transform var(--transition),box-shadow var(--transition)}
.aium-promo-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.aium-promo-card strong{font-size:16px;color:var(--color-text)}
.aium-promo-card small{font-size:13px;color:var(--color-text-secondary)}
.aium-promo-cta{display:inline-block;margin-top:6px;padding:4px 16px;background:var(--color-accent);color:#fff!important;border-radius:20px;font-size:13px;font-weight:600}
.aium-affiliate-box{margin:32px 0 24px;padding:24px;background:var(--color-card);border:1px solid var(--color-border);border-radius:var(--radius-md)}
.aium-affiliate-box h4{font-size:18px;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--color-accent)}
.aium-affiliate-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:767px){.aium-affiliate-grid{grid-template-columns:1fr}}
.aium-affiliate-item{display:flex;flex-direction:column;gap:4px;padding:16px;background:var(--color-bg);border-radius:var(--radius-sm);text-decoration:none!important;transition:all var(--transition);border:1px solid transparent}
.aium-affiliate-item:hover{border-color:var(--color-accent);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.aium-affiliate-item strong{font-size:15px;color:var(--color-text)}
.aium-affiliate-item span{font-size:13px;color:var(--color-text-secondary)}
.aium-affiliate-item em{font-style:normal;font-size:12px;color:var(--color-accent);margin-top:4px;font-weight:600}
.aium-subscribe-box{padding:24px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-light));color:#fff;border-radius:var(--radius-md);text-align:center}
.aium-subscribe-box h4{font-size:18px;margin-bottom:8px;color:#fff}
.aium-subscribe-box p{font-size:14px;opacity:.8;margin-bottom:16px}
.aium-subscribe-form{display:flex;gap:8px;max-width:400px;margin:0 auto}
.aium-subscribe-form input[type=email]{flex:1;padding:10px 16px;border:none;border-radius:var(--radius-sm);font-size:14px;outline:none}
.aium-subscribe-form button{padding:10px 20px;background:var(--color-accent);color:#fff;border-radius:var(--radius-sm);font-weight:600;font-size:14px;white-space:nowrap;transition:background var(--transition)}
.aium-subscribe-form button:hover{background:var(--color-accent-hover)}
.aium-subscribe-box small{display:block;margin-top:12px;font-size:12px;opacity:.5}
.site-sidebar .aium-subscribe-box{background:var(--color-card);color:var(--color-text);border:1px solid var(--color-border)}
.site-sidebar .aium-subscribe-box h4{color:var(--color-text)}
.site-sidebar .aium-subscribe-box p{color:var(--color-text-secondary);opacity:1}
.site-sidebar .aium-subscribe-form input[type=email]{border:1px solid var(--color-border);background:var(--color-bg)}
.site-sidebar .aium-subscribe-box small{color:var(--color-text-secondary);opacity:.7}
@media(max-width:480px){.aium-subscribe-form{flex-direction:column}}
.aium-home-ad{margin:0 auto 24px}