/*
Theme Name: Dinh Hieu Linux Journal
Template: blocksy
Version: 1.0.0
Description: Blog Linux, VPS và quản trị hệ thống. Child theme của Blocksy Free.
Text Domain: dinhhieu-blog
*/
:root{--ink:#142438;--muted:#68788d;--blue:#2563eb;--line:#e4eaf2;--paper:#fff;--soft:#f5f8fc}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:16px;line-height:1.7}a{color:var(--blue);text-decoration:none}a:hover{color:#1647ad}button,input{font:inherit}a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #639dff;outline-offset:4px}.wrap{width:min(1240px,calc(100% - 64px));margin:auto}.skip-link{position:absolute;top:-100px;left:20px;padding:10px;background:white;z-index:99}.skip-link:focus{top:10px}.site-header{border-bottom:1px solid var(--line);background:white}.header-top{display:flex;align-items:center;justify-content:space-between;gap:24px;height:88px}.brand{display:flex;gap:12px;align-items:center;color:var(--ink);font-size:22px;font-weight:800;letter-spacing:-1px}.brand-mark{display:grid;place-items:center;width:39px;height:39px;background:var(--blue);color:white;font:700 21px ui-monospace,monospace;border-radius:10px}.brand small{display:block;font-size:9px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);font-weight:600;margin-top:-4px}.header-note{font-size:12px;color:var(--muted)}.header-search input{width:205px;border:1px solid var(--line);border-radius:7px;padding:9px 13px;background:var(--soft);font-size:12px}.search-form{display:flex;gap:8px}.search-form button{background:var(--blue);border:0;border-radius:7px;color:white;padding:9px 15px;font-size:12px;cursor:pointer}.main-nav{display:flex;align-items:center;gap:27px;min-height:49px;font-size:12px;font-weight:650;overflow:auto;white-space:nowrap}.main-nav a{color:#506078}.main-nav a:hover,.main-nav a[aria-current]{color:var(--blue)}.main-nav .nav-home{color:var(--blue)}.hero{background:linear-gradient(115deg,#f2f7ff,#f8faff 65%,#eff7f6);border-bottom:1px solid var(--line);padding:66px 0 60px;position:relative}.hero-grid{display:grid;grid-template-columns:1.14fr 1fr;gap:75px;align-items:center}.eyebrow{font:700 10px ui-monospace,monospace;letter-spacing:2px;text-transform:uppercase;color:var(--blue);display:flex;gap:9px;align-items:center}.eyebrow:before{content:'';width:7px;height:7px;border-radius:50%;background:#36bd90}.hero h1{font-size:clamp(36px,4vw,55px);line-height:1.16;letter-spacing:-2px;margin:21px 0;color:#172a45;font-weight:800}.hero h1 em{font-style:normal;color:var(--blue)}.hero p{font-size:14px;color:#60718a;max-width:460px;line-height:1.9;margin-bottom:25px}.hero-links{display:flex;align-items:center;gap:25px;font-size:12px;font-weight:700}.btn{display:inline-flex;background:var(--blue);color:white;border-radius:7px;padding:12px 20px;align-items:center;gap:20px}.btn:hover{color:white;background:#174bc0}.hero-terminal{background:#101b2c;color:#dce7f6;border-radius:12px;box-shadow:0 22px 50px #1b355d26;transform:rotate(-1deg);overflow:hidden;font:12px/2 ui-monospace,monospace}.hero-terminal .lhb-terminal-bar{padding:12px 16px}.hero-terminal pre{margin:0;padding:24px;background:transparent;color:inherit;font-size:12px;line-height:2;overflow:auto}.term-green{color:#68dbb1}.term-blue{color:#7eb7ff}.term-muted{color:#758ba7}.hero-terminal-footer{padding:10px 20px;border-top:1px solid #29364b;color:#8499b5;font-size:10px;display:flex;justify-content:space-between}.topic-strip{border-bottom:1px solid var(--line)}.topic-strip .wrap{display:flex;justify-content:space-between;gap:20px;overflow:auto;padding-top:23px;padding-bottom:23px}.topic-strip a{color:#5d6d82;font-size:12px;white-space:nowrap}.topic-strip span{color:var(--blue);font:700 15px monospace;margin-right:10px}.home-content{padding-top:50px;padding-bottom:70px}.section-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;gap:20px}.section-heading h2{font-size:21px;letter-spacing:-.6px;margin:0}.section-heading h2:before{content:'';display:inline-block;background:var(--blue);height:19px;width:3px;margin-right:11px;vertical-align:-3px}.section-heading a{font-size:11px;font-weight:650}.featured-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px}.post-card{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:white;transition:transform .2s,box-shadow .2s}.post-card:hover{transform:translateY(-3px);box-shadow:0 12px 24px #1b355d0b}.post-art{height:170px;background:#edf3fe;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;color:#7b9bc7}.post-art:before{content:'';position:absolute;inset:0;background-image:linear-gradient(#7d9ccc12 1px,transparent 1px),linear-gradient(90deg,#7d9ccc12 1px,transparent 1px);background-size:24px 24px}.post-art .art-label{font:700 35px ui-monospace,monospace;letter-spacing:-2px;z-index:1;color:#3b5e93}.post-art .art-corner{position:absolute;left:20px;top:15px;font:10px monospace;letter-spacing:2px;text-transform:uppercase}.post-art[data-topic="security"]{background:#ecf6f1}.post-art[data-topic="security"] .art-label{color:#2c7563}.post-art[data-topic="docker-devops"]{background:#edf6ff}.post-art[data-topic="database"]{background:#f1eefa}.post-art[data-topic="web-server"]{background:#eaf4f2}.post-art img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.card-body{padding:22px}.category-label{font-size:9px;font-weight:800;text-transform:uppercase;letter-spacing:1px;color:var(--blue)}.card-body h3{font-size:18px;line-height:1.45;letter-spacing:-.35px;margin:9px 0 10px}.card-body h3 a{color:var(--ink)}.card-body p{font-size:12px;line-height:1.8;color:var(--muted);margin-bottom:16px}.post-meta{font-size:10px;color:#7d8b9d;display:flex;gap:12px;flex-wrap:wrap}.featured-primary .post-art{height:235px;background:#152941}.featured-primary .post-art .art-label{color:#82b7ff;font-size:54px}.featured-primary .post-art .art-corner{color:#8aa3c2}.featured-primary .card-body h3{font-size:24px}.featured-secondary{display:grid;gap:18px}.featured-secondary .post-card{display:grid;grid-template-columns:140px 1fr}.featured-secondary .post-art{height:100%;min-height:160px}.featured-secondary .post-art .art-label{font-size:27px}.featured-secondary .art-corner{display:none}.featured-secondary .card-body{padding:17px}.featured-secondary .card-body h3{font-size:15px}.featured-secondary .card-body p{display:none}.editorial-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:38px;margin-top:50px}.posts-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.sidebar-box{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:25px;margin-bottom:22px}.sidebar-box h3{font-size:14px;margin:0 0 20px}.topic-list{list-style:none;padding:0;margin:0}.topic-list li{margin-bottom:12px}.topic-list a{display:flex;justify-content:space-between;color:#52647b;font-size:12px}.topic-list span{color:#94a3b8;font:10px monospace;background:white;padding:0 7px;border-radius:4px}.author-avatar{width:46px;height:46px;display:grid;place-items:center;border-radius:50%;background:#dbe8ff;color:#2963be;font-weight:800;font-size:15px}.sidebar-box p{font-size:12px;color:var(--muted)}.sidebar-box .author-avatar{margin-bottom:15px}.small-link{font-size:11px;font-weight:700}.learning-path{margin-top:48px;background:#f4f8ff;border:1px solid #dfe9fa;border-radius:10px;padding:26px;display:flex;justify-content:space-between;align-items:center;gap:20px}.learning-path h2{font-size:17px;margin:0 0 5px}.learning-path p{font-size:12px;color:var(--muted);margin:0}.site-footer{border-top:1px solid var(--line);background:#f9fbfd;padding:40px 0 20px}.footer-grid{display:flex;justify-content:space-between;gap:30px}.footer-grid p{font-size:12px;color:var(--muted);max-width:360px}.footer-links{display:flex;gap:25px;font-size:12px;align-items:flex-start;padding-top:10px}.footer-bottom{border-top:1px solid var(--line);padding-top:20px;margin-top:25px;display:flex;justify-content:space-between;font-size:10px;color:#8795a7}.archive-header{padding:45px 0 30px}.archive-header h1{font-size:35px;letter-spacing:-1px;margin:10px 0}.archive-header p{color:var(--muted)}.archive-main{padding-bottom:70px}.archive-main .posts-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.pagination{margin:35px 0;display:flex;gap:12px}.pagination .page-numbers{padding:5px 12px;border:1px solid var(--line);border-radius:5px}.pagination .current{background:var(--blue);color:white}.breadcrumbs{font-size:11px;color:#8491a3;margin-bottom:22px}.breadcrumbs a{color:#68788d}.article-header{padding:45px 0 30px;max-width:1000px}.article-header h1{font-size:clamp(30px,4vw,46px);line-height:1.25;letter-spacing:-1.5px;margin:16px 0}.article-deck{font-size:17px;color:var(--muted);max-width:800px}.article-header .post-meta{font-size:11px}.article-layout{display:grid;grid-template-columns:minmax(0,800px) 250px;gap:65px;align-items:start;padding-bottom:65px}.article-content{font-size:16px;line-height:1.95;min-width:0}.article-content h2{font-size:25px;margin:42px 0 18px;letter-spacing:-.6px}.article-content h3{font-size:20px;margin-top:30px}.article-content :not(pre)>code{background:#eff3f9;color:#bd3c72;border-radius:4px;padding:2px 5px;font-size:.88em}.article-content img{max-width:100%;height:auto;border-radius:8px}.article-content table{border-collapse:collapse;width:100%;display:block;overflow:auto}.article-content td,.article-content th{border:1px solid var(--line);padding:10px 14px}.article-content blockquote{border-left:3px solid var(--blue);padding:5px 22px;margin-left:0;color:var(--muted)}.article-content a{text-decoration:underline;text-underline-offset:3px}.article-aside{position:sticky;top:30px;padding-top:20px}.article-content>.wp-block-image{margin:25px 0}.author-box{display:flex;gap:18px;background:var(--soft);padding:24px;border-radius:10px;margin-top:40px;border:1px solid var(--line)}.author-box h3{margin:0;font-size:15px}.author-box p{font-size:13px;margin:6px 0 0;color:var(--muted)}.related-posts{border-top:1px solid var(--line);padding:40px 0 60px}.related-posts .posts-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.empty-state{padding:50px;background:var(--soft);border-radius:10px}.page-body{max-width:800px;padding:45px 0 70px}.page-body h1{font-size:36px}.mobile-menu{display:none}.screen-reader-text{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}@media(max-width:1000px){.header-note{display:none}.hero-grid{gap:30px}.hero h1{font-size:40px}.featured-grid{grid-template-columns:1fr}.featured-secondary{grid-template-columns:1fr 1fr}.featured-secondary .post-card{grid-template-columns:1fr}.featured-secondary .post-art{height:120px;min-height:0}.editorial-layout{grid-template-columns:1fr 240px;gap:24px}.article-layout{gap:30px;grid-template-columns:minmax(0,1fr) 210px}}@media(max-width:760px){.wrap{width:calc(100% - 36px)}.header-top{height:74px}.brand{font-size:20px}.header-search{display:none}.mobile-menu{display:block;font-size:12px}.mobile-menu a{color:#52647b}.main-nav{gap:23px;font-size:11px;min-height:44px}.hero{padding:40px 0}.hero-grid{grid-template-columns:1fr}.hero h1{font-size:39px}.hero-terminal{transform:none}.hero p{max-width:none}.topic-strip .wrap{justify-content:flex-start;gap:28px}.home-content{padding-top:32px}.editorial-layout{grid-template-columns:1fr;margin-top:35px}.home-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:18px}.sidebar-box{margin-bottom:0;padding:20px}.article-layout{display:flex;flex-direction:column;gap:10px}.article-aside{order:-1;position:static;width:100%;border:1px solid var(--line);border-radius:8px;padding:15px;background:var(--soft)}.article-header{padding-top:30px}.article-deck{font-size:15px}.article-content{font-size:15px;width:100%}.article-header h1{letter-spacing:-.8px}.archive-main .posts-grid,.related-posts .posts-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{flex-direction:column;gap:5px}.footer-links{flex-wrap:wrap}.footer-bottom{gap:15px;flex-wrap:wrap}.learning-path{align-items:flex-start;flex-direction:column}.section-heading h2{font-size:19px}}@media(max-width:460px){.posts-grid,.featured-secondary,.archive-main .posts-grid,.related-posts .posts-grid,.home-sidebar{grid-template-columns:1fr}.featured-secondary .post-card{grid-template-columns:100px 1fr}.featured-secondary .post-art{height:100%;min-height:140px}.featured-primary .card-body h3{font-size:21px}.post-art{height:160px}.hero h1{font-size:35px}.hero-terminal pre{font-size:11px;padding:18px}.hero-links{gap:18px}.section-heading a{font-size:10px}.brand small{font-size:8px}.card-body h3{font-size:19px}} 

.brand-mark{flex-shrink:0}.brand small{white-space:nowrap;letter-spacing:1.3px;font-size:8px}.brand{line-height:1.5}.main-nav{list-style:none}