/*
Theme Name: schema
Theme URI: https://vieclamngay.net
Description: Theme WordPress đơn giản, tải nhanh, chuẩn SEO và schema Google, tối ưu mobile. Thanh bên trái (logo, tên site, nút đóng/mở Ctrl+B, menu, widget) và nội dung bên phải, giao diện dạng box tông xanh Facebook.
Version: 1.0.2
Requires at least: 5.9
Requires PHP: 7.2
License: GPL-2.0-or-later
Text Domain: schema
*/
:root{
	--bg:#f0f2f5;--side:#ffffff;--paper:#ffffff;--soft:#f0f2f5;
	--line:#dadde1;--line-d:#ced0d4;
	--ink:#050505;--mut:#65676b;--accent:#1877f2;--accent-d:#166fe5;--accent-bg:#e7f3ff;
	--btn2:#e4e6eb;--btn2-h:#d8dadf;--shadow:0 1px 2px rgba(0,0,0,.12);--shadow-h:0 2px 10px rgba(0,0,0,.18);
	--sb-w:290px;--r:8px;
	--sans:Roboto,"Segoe UI",-apple-system,BlinkMacSystemFont,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
	--serif:var(--sans);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:70px}
html.sb-lock{overflow:hidden}
body{-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 var(--sans);overflow-wrap:anywhere;-webkit-tap-highlight-color:transparent}
img,video,iframe,svg{max-width:100%;height:auto}
a{color:var(--accent);text-underline-offset:2px}
a:hover{color:var(--accent-d)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.screen-reader-text{border:0;clip:rect(1px,1px,1px,1px);clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;white-space:nowrap}
.skip-link:focus{clip:auto;clip-path:none;height:auto;width:auto;margin:0;padding:10px 16px;background:var(--paper);color:var(--ink);z-index:100000;top:8px;left:8px;border-radius:8px}

/* ===== Khung 2 phần ===== */
.layout{display:flex;min-height:100vh}
.content{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.main{flex:1;width:100%;max-width:980px;margin:0 auto;padding:22px 22px 10px}

/* ===== Thanh bên ===== */
.sidebar{flex:0 0 var(--sb-w);width:var(--sb-w);position:sticky;top:0;height:100vh;height:100dvh;overflow-y:auto;overscroll-behavior:contain;background:var(--side);border-right:1px solid var(--line);transition:margin-left .25s ease}
html[data-sb=closed] .sidebar{margin-left:calc(var(--sb-w) * -1);visibility:hidden;transition:margin-left .25s ease,visibility 0s linear .25s}
.sb-top{position:sticky;top:0;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px;background:var(--side);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;min-width:0;color:var(--ink);text-decoration:none}
.brand-logo{width:44px;height:44px;border-radius:10px;object-fit:cover;flex:none}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.site-title{font-family:var(--serif);font-weight:700;font-size:18px;line-height:1.25}
.sb-desc{margin:0;padding:12px 16px;background:var(--paper);border-bottom:1px solid var(--line);font-family:var(--serif);font-style:italic;font-size:14px;line-height:1.5;color:#5c5546}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;flex:none;width:44px;height:44px;border:1px solid var(--line-d);border-radius:10px;background:var(--paper);color:var(--ink);cursor:pointer}
.icon-btn:hover{background:var(--soft)}
.sb-body{padding:14px;display:flex;flex-direction:column;gap:14px}

/* Menu */
.menu-list,.menu-list ul{list-style:none;margin:0;padding:0}
.menu-list ul{margin:2px 0 4px 14px;border-left:1px solid var(--line-d)}
.menu-list a{display:block;padding:10px 12px;min-height:44px;border-radius:8px;color:var(--ink);text-decoration:none;font-weight:500}
.menu-list a:hover{background:var(--soft)}
.menu-list .current-menu-item>a,.menu-list .current_page_item>a,.menu-list .current-menu-ancestor>a,.menu-list .current-menu-parent>a{background:var(--paper);box-shadow:inset 3px 0 0 var(--accent);font-weight:700}

/* Widget dạng box */
.widget{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:14px;font-size:15px}
.widget-title{margin:0 0 10px;font-family:var(--serif);font-size:15px;text-transform:uppercase;letter-spacing:.5px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.widget ul{list-style:none;margin:0;padding:0}
.widget li{padding:6px 0;border-bottom:1px dashed var(--line)}.widget li:last-child{border-bottom:0}
.widget a{color:var(--ink);text-decoration:none}.widget a:hover{color:var(--accent)}

/* Thanh trên (mobile / khi thanh bên đóng) */
.topbar{display:none;position:sticky;top:0;z-index:30;align-items:center;gap:10px;padding:calc(6px + env(safe-area-inset-top)) 12px 6px;background:var(--paper);border-bottom:1px solid var(--line)}
html[data-sb=closed] .topbar{display:flex}
.topbar-title{font-family:var(--serif);font-weight:700;font-size:17px;color:var(--ink);text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sb-overlay{display:none}

/* ===== Box ===== */
.box{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin:0 0 16px}
.crumbs{margin:0 0 12px;font-size:13px;color:var(--mut)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:4px;list-style:none;margin:0;padding:0}
.crumbs li+li::before{content:"›";margin-right:4px}
.crumbs a{color:var(--mut);text-decoration:none}.crumbs a:hover{color:var(--accent)}
.page-head{margin-bottom:16px}
.page-title,.entry-title{font-family:var(--serif);font-size:28px;line-height:1.3;margin:0 0 8px}
.page-desc{color:var(--mut)}
.meta{font-size:13px;color:var(--mut)}.meta a{color:var(--mut)}

/* Danh sách bài */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px;margin-bottom:16px}
.card{padding:0;margin:0;overflow:hidden;display:flex;flex-direction:column;transition:border-color .15s}
.card:hover{border-color:var(--line-d)}
.card-thumb{display:block;aspect-ratio:16/9;background:var(--soft)}
.card-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.card-body{padding:16px}
.card-title{font-family:var(--serif);font-size:18px;line-height:1.35;margin:0 0 4px}
.card-title a{color:var(--ink);text-decoration:none}.card-title a:hover{color:var(--accent)}
.card-excerpt{margin-top:8px;font-size:15px;color:#4a443c}.card-excerpt p{margin:0}

/* Bài viết */
.entry-thumb{margin:0 0 18px}.entry-thumb img{width:100%;border-radius:10px;display:block}
.entry-content{font-size:17px;line-height:1.8}
.entry-content h2,.entry-content h3,.entry-content h4{font-family:var(--serif);line-height:1.35;margin:1.6em 0 .6em}
.entry-content a{text-decoration:underline}
.entry-content img{border-radius:8px}
.entry-content figure{margin:1.2em 0}.entry-content figcaption{font-size:13px;color:var(--mut);text-align:center}
.entry-content blockquote{margin:1.2em 0;padding:8px 18px;border-left:4px solid var(--line-d);background:var(--soft);border-radius:0 8px 8px 0}
.entry-content pre{overflow:auto;padding:14px;background:var(--soft);border-radius:8px;font-size:14px}
.entry-content table{display:block;overflow-x:auto;border-collapse:collapse;max-width:100%}
.entry-content th,.entry-content td{border:1px solid var(--line-d);padding:8px 12px}
.entry-content .alignwide,.entry-content .alignfull{max-width:100%}
.alignleft{float:left;margin:0 16px 8px 0}.alignright{float:right;margin:0 0 8px 16px}.aligncenter{display:block;margin:0 auto}
.entry-foot{margin-top:20px;padding-top:12px;border-top:1px solid var(--line);font-size:14px}
.post-navigation .nav-links{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.post-navigation a{display:block;padding:14px;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);color:var(--ink);text-decoration:none}
.post-navigation .nav-next{text-align:right}

/* Phân trang */
.pagination{margin:6px 0 18px}
.pagination .nav-links{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.page-numbers{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:0 14px;border:1px solid var(--line-d);border-radius:10px;background:var(--paper);color:var(--ink);text-decoration:none}
.page-numbers.current,a.page-numbers:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.page-numbers.dots{border:0;background:transparent}

/* Form & nút */
.btn,button[type=submit],input[type=submit]{display:inline-block;min-height:44px;padding:0 18px;border:1px solid var(--ink);border-radius:10px;background:var(--ink);color:var(--paper);font:600 15px/42px var(--sans);text-decoration:none;cursor:pointer}
.btn:hover,button[type=submit]:hover,input[type=submit]:hover{background:#4a443c;color:var(--paper)}
input[type=text],input[type=search],input[type=email],input[type=url],input[type=tel],input[type=number],select,textarea{width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--line-d);border-radius:10px;background:#fff;color:var(--ink);font:16px var(--sans)}
.search-form{display:flex;gap:8px}.search-form input{flex:1}
.comments-title{font-family:var(--serif);font-size:20px;margin-top:0}
.comment-list{list-style:none;padding:0}.comment-list .children{list-style:none;padding-left:18px}
.comment-body{padding:12px 0;border-bottom:1px solid var(--line)}
.comment-form p{margin:0 0 12px}

/* Chân trang */
.site-footer{padding:20px 22px calc(26px + env(safe-area-inset-bottom));text-align:center;color:var(--mut);font-size:14px}
.site-footer p{margin:0}

/* Không JS: thanh bên xếp trên nội dung */
html:not([data-sb]) .icon-btn{display:none}

/* ===== Mobile ===== */
@media(max-width:900px){
	.layout{display:block}
	html[data-sb] .sidebar{position:fixed;top:0;left:0;bottom:0;z-index:60;height:100dvh;width:min(86vw,320px);flex:none;margin-left:0!important;transform:translateX(-102%);visibility:hidden;transition:transform .25s ease,visibility 0s linear .25s;padding-bottom:env(safe-area-inset-bottom)}
	html[data-sb=open] .sidebar{transform:none;visibility:visible;transition:transform .25s ease}
	html[data-sb] .sb-overlay{display:block;position:fixed;inset:0;z-index:55;background:rgba(43,40,35,.5);opacity:0;visibility:hidden;transition:opacity .25s}
	html[data-sb=open] .sb-overlay{opacity:1;visibility:visible}
	html[data-sb] .topbar{display:flex}
	html:not([data-sb]) .sidebar{position:static;width:auto;height:auto;border-right:0;border-bottom:1px solid var(--line)}
	.main{padding:14px 12px 6px}
	.box{padding:16px;border-radius:10px}
	.page-title,.entry-title{font-size:23px}
	.entry-content{font-size:16.5px}
	.grid{grid-template-columns:1fr;gap:12px}
	.post-navigation .nav-links{grid-template-columns:1fr}
	.site-footer{padding-inline:12px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* ===== Bảng màu Facebook (v1.0.2): nền xám, thẻ trắng, xanh #1877f2 ===== */
.sidebar{background:var(--side);border-right:1px solid var(--line);box-shadow:var(--shadow)}
.sb-top{background:var(--side)}
.sb-desc{background:#f7f8fa;font-style:normal;color:var(--mut)}
.icon-btn{border:0;border-radius:50%;background:var(--btn2);color:var(--ink)}
.icon-btn:hover{background:var(--btn2-h)}
.menu-list a{border-radius:8px}
.menu-list a:hover{background:var(--soft)}
.menu-list .current-menu-item>a,.menu-list .current_page_item>a,.menu-list .current-menu-ancestor>a,.menu-list .current-menu-parent>a{background:var(--accent-bg);color:var(--accent);box-shadow:none;font-weight:700}
.menu-list ul{border-left-color:var(--line)}
.widget{border:0;box-shadow:var(--shadow)}
.sidebar .widget{background:var(--bg);box-shadow:none}
.sidebar .vlcg-search input[type=search],.sidebar .vlcg-search select{background:#fff;border:1px solid var(--line-d);border-radius:8px}
.widget-title{font-size:17px;font-weight:700;text-transform:none;letter-spacing:0}
.widget li{border-bottom-color:var(--line)}
.topbar{background:#fff;border-bottom:0;box-shadow:var(--shadow)}
.box{border:0;box-shadow:var(--shadow)}
.card{transition:box-shadow .15s}.card:hover{border-color:transparent;box-shadow:var(--shadow-h)}
.entry-content blockquote{border-left-color:var(--accent);background:var(--accent-bg)}
.post-navigation a{border:0;box-shadow:var(--shadow)}
.post-navigation a:hover{color:var(--accent)}
.page-numbers{border:0;border-radius:6px;background:var(--btn2);color:var(--ink);font-weight:600}
.page-numbers.current,a.page-numbers:hover{background:var(--accent);color:#fff}
a.page-numbers:hover:not(.current){background:var(--btn2-h);color:var(--ink)}
.btn,button[type=submit],input[type=submit]{border:0;border-radius:6px;background:var(--accent);color:#fff}
.btn:hover,button[type=submit]:hover,input[type=submit]:hover{background:var(--accent-d);color:#fff}
input[type=text],input[type=search],input[type=email],input[type=url],input[type=tel],input[type=number],select,textarea{border-radius:6px}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-bg)}
@media(max-width:900px){html[data-sb] .sb-overlay{background:rgba(5,5,5,.5)}.box{border-radius:8px}}