/* ===== STSV — Giao diện công khai (phong cách Sổ tay Sinh viên) ===== */
:root{
  --navy:#0f1f3d; --navy2:#162744; --navy3:#1e3a6e;
  --blue:#1a56db; --blue-light:#3b82f6;
  --gold:#e6a817; --gold-light:#fbbf24;
  --cream:#faf7f2; --cream2:#f3ede3;
  --text:#1a1a2e; --text2:#4a4a6a; --text3:#8888aa;
  --white:#fff;
  --border:rgba(15,31,61,.10); --border2:rgba(15,31,61,.06);
  --shadow:0 4px 24px rgba(15,31,61,.10); --shadow2:0 2px 8px rgba(15,31,61,.07);
  --radius:12px; --radius2:8px;
  --sidebar:280px; --topbar-h:60px; --mainnav-h:50px; --content-max:1080px;
  --primary:var(--blue); /* có thể bị ghi đè bởi cấu hình màu chủ đạo */
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--cream);color:var(--text);font-size:15px;line-height:1.7;overflow-x:hidden}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:none}
img{max-width:100%;height:auto}
.skip-link{position:absolute;left:-999px;top:0;background:#fff;padding:8px;z-index:500}
.skip-link:focus{left:8px}

/* ── TOPBAR ── */
#topbar{position:fixed;top:0;left:0;right:0;z-index:200;background:var(--navy);
  display:flex;align-items:center;gap:16px;padding:0 20px;height:var(--topbar-h);
  box-shadow:0 2px 16px rgba(0,0,0,.25)}
#menu-btn{display:none;background:none;border:none;color:#fff;font-size:22px;cursor:pointer;padding:4px;flex-shrink:0}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand .logo-icon{width:34px;height:34px;background:var(--gold);border-radius:7px;
  display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:900;color:var(--navy);
  font-family:'Playfair Display',serif}
.brand .logo-img{width:42px;height:42px;background:#fff;border-radius:9px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;padding:3px;box-shadow:0 1px 4px rgba(0,0,0,.2)}
.brand .logo-img img{max-width:100%;max-height:100%;display:block}
.brand .logo-text{font-size:14px;font-weight:700;color:#fff;line-height:1.2}
.brand .logo-text span{display:block;font-size:11px;font-weight:400;color:rgba(255,255,255,.55)}

/* ── MAIN NAV (thanh menu ngang riêng, dưới topbar, trên banner) ── */
#mainnav{position:fixed;top:var(--topbar-h);left:0;right:0;height:var(--mainnav-h);z-index:190;
  background:#fff;border-bottom:1px solid var(--border);box-shadow:0 2px 10px rgba(15,31,61,.06);
  display:flex;align-items:stretch;padding:0 20px}
.mainnav-inner{display:flex;align-items:stretch;justify-content:center;gap:2px;width:100%;max-width:var(--content-max);margin:0 auto}
.hm-item{position:relative;display:flex;align-items:center}
.hm-item>a{display:flex;align-items:center;gap:7px;height:100%;padding:0 16px;color:var(--text2);
  font-size:14px;font-weight:600;white-space:nowrap;border-bottom:3px solid transparent;transition:.15s}
.hm-item>a:hover,.hm-item.active>a{color:var(--navy);border-bottom-color:var(--gold);background:var(--cream)}
.hm-item>a .caret{font-size:9px;opacity:.55}
.hm-dropdown{position:absolute;top:100%;left:0;min-width:270px;background:#fff;border:1px solid var(--border);
  border-top:2px solid var(--gold);border-radius:0 0 var(--radius) var(--radius);
  box-shadow:0 14px 34px rgba(15,31,61,.18);padding:8px;opacity:0;visibility:hidden;transform:translateY(6px);
  transition:.16s;z-index:300}
.hm-item:hover .hm-dropdown,.hm-item:focus-within .hm-dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.hm-dropdown a{display:block;padding:9px 12px;border-radius:7px;color:var(--text2);font-size:13.5px;font-weight:500}
.hm-dropdown a:hover{background:var(--cream2);color:var(--navy)}
.hm-dropdown .hm-all{margin-top:4px;border-top:1px solid var(--border2);color:var(--blue);font-weight:600}

/* ── SEARCH ── */
#search-wrap{flex:1;max-width:420px;position:relative;margin-left:auto}
#search-input{width:100%;background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);border-radius:24px;
  padding:9px 16px 9px 40px;color:#fff;font-family:inherit;font-size:14px;outline:none;transition:.2s}
#search-input::placeholder{color:rgba(255,255,255,.45)}
#search-input:focus{background:rgba(255,255,255,.18);border-color:var(--gold)}
.search-icon{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:rgba(255,255,255,.5);font-size:15px;pointer-events:none}
#search-results{position:absolute;top:calc(100% + 8px);left:0;right:0;background:#fff;border-radius:var(--radius);
  box-shadow:0 8px 32px rgba(0,0,0,.18);max-height:380px;overflow-y:auto;display:none;z-index:300}
#search-results.visible{display:block}
.sr-item{padding:10px 16px;cursor:pointer;border-bottom:1px solid var(--border2);transition:background .15s;display:block;color:var(--text)}
.sr-item:hover{background:var(--cream)}
.sr-item:last-child{border-bottom:none}
.sr-title{font-size:13px;font-weight:600;color:var(--text)}
.sr-sub{font-size:12px;color:var(--text3);margin-top:1px}
.sr-empty{padding:20px;text-align:center;color:var(--text3);font-size:13px}
.topbar-admin{flex-shrink:0;color:rgba(255,255,255,.7);font-size:13px;border:1px solid rgba(255,255,255,.2);
  padding:7px 12px;border-radius:20px;white-space:nowrap}
.topbar-admin:hover{color:#fff;border-color:var(--gold)}

/* ── LAYOUT ── */
#layout{display:flex;min-height:100vh;padding-top:calc(var(--topbar-h) + var(--mainnav-h))}
/* Mục lục bên trái: ẩn trên desktop (đã có menu ngang); chỉ dùng làm menu trượt trên mobile */
#sidebar{display:none;width:var(--sidebar);flex-shrink:0;position:fixed;top:var(--topbar-h);left:0;bottom:0;background:#fff;
  border-right:1px solid var(--border);overflow-y:auto;overflow-x:hidden;z-index:100;transition:transform .3s ease}
#sidebar::-webkit-scrollbar{width:5px}
#sidebar::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.sidebar-section{padding:8px 0;border-bottom:1px solid var(--border2)}
.sidebar-title{font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--text3);padding:14px 18px 6px;text-transform:uppercase}
.nav-tree{list-style:none}
.nav-tree>li{margin:0}
.nav-tree a{display:flex;align-items:center;gap:9px;padding:9px 18px;color:var(--text2);font-size:13.5px;position:relative}
.nav-tree a:hover{background:var(--cream2);color:var(--navy)}
.nav-tree a.active{background:#eff6ff;color:var(--blue);font-weight:600}
.nav-tree a.active::before{content:'';position:absolute;left:0;top:5px;bottom:5px;width:3px;background:var(--blue);border-radius:0 2px 2px 0}
.nav-parent{font-weight:600;color:var(--text)!important}
.nav-children{list-style:none;display:none;background:var(--cream)}
.nav-section.open .nav-children{display:block}
.nav-children a{padding-left:42px;font-size:13px;color:var(--text2)}
.nav-ico{flex-shrink:0}

/* ── MAIN (căn giữa, không còn sidebar trên desktop) ── */
#main{width:100%;max-width:var(--content-max);margin:0 auto;min-width:0;padding:30px 40px 80px}
.breadcrumb{font-size:13px;color:var(--text3);margin-bottom:18px}
.breadcrumb a{color:var(--text3)}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb .sep{margin:0 6px;opacity:.5}

/* ── HERO ── */
#hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 60%,var(--navy3) 100%);
  border-radius:16px;padding:46px 46px 38px;margin-bottom:32px;position:relative;overflow:hidden;color:#fff}
#hero::before{content:'';position:absolute;top:-60px;right:-60px;width:260px;height:260px;border-radius:50%;background:rgba(230,168,23,.12)}
#hero::after{content:'';position:absolute;bottom:-40px;right:90px;width:120px;height:120px;border-radius:50%;background:rgba(230,168,23,.07)}
.hero-label{font-size:11px;font-weight:700;letter-spacing:.15em;color:var(--gold);text-transform:uppercase;margin-bottom:10px}
.hero-title{font-family:'Playfair Display',serif;font-size:38px;font-weight:900;line-height:1.15;margin-bottom:14px}
.hero-title span{color:var(--gold)}
.hero-desc{font-size:14.5px;color:rgba(255,255,255,.72);max-width:520px}
.hero-search{display:flex;max-width:560px;margin-top:24px;background:#fff;border-radius:30px;overflow:hidden;box-shadow:0 8px 24px rgba(0,0,0,.18)}
.hero-search input{flex:1;border:0;padding:13px 20px;font-size:14.5px;outline:none;font-family:inherit}
.hero-search button{border:0;background:var(--gold);color:var(--navy);font-weight:700;padding:0 26px;cursor:pointer;font-family:inherit}
.hero-stats{display:flex;gap:34px;margin-top:28px;flex-wrap:wrap}
.hero-stat{display:flex;flex-direction:column;gap:2px}
.hero-stat-num{font-family:'Playfair Display',serif;font-size:26px;font-weight:700;color:var(--gold)}
.hero-stat-label{font-size:12px;color:rgba(255,255,255,.55)}

/* ── SECTION TITLE ── */
.page-section-title{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text3);
  margin:32px 0 14px;display:flex;align-items:center;gap:10px}
.page-section-title::after{content:'';flex:1;height:1px;background:var(--border)}

/* ── QUICK ACCESS ── */
.quick-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin-bottom:8px}
.quick-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;cursor:pointer;
  transition:.2s;display:flex;align-items:flex-start;gap:12px}
.quick-card:hover{border-color:var(--blue-light);box-shadow:var(--shadow);transform:translateY(-2px)}
.quick-icon{width:38px;height:38px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.quick-card-title{font-size:13.5px;font-weight:600;color:var(--text);line-height:1.3}
.quick-card-sub{font-size:11.5px;color:var(--text3);margin-top:2px}

/* ── SECTION CARDS (category overview) ── */
.section-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.section-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;flex-direction:column;transition:.2s}
.section-card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.section-head{display:flex;align-items:center;gap:12px;color:var(--text)}
.section-icon{font-size:26px}
.section-head h2{font-size:16px;margin:0;color:var(--navy)}
.section-links{list-style:none;margin:14px 0;flex:1}
.section-links li{margin:7px 0}
.section-links a{font-size:13.5px;color:var(--text2)}
.section-links a:hover{color:var(--blue)}
.section-more{font-size:13px;font-weight:600;color:var(--blue);margin-top:auto}

/* ── HOME: hai cột (cập nhật gần đây + hỗ trợ) ── */
.home-cols{display:grid;grid-template-columns:1.7fr 1fr;gap:20px;align-items:start}
.recent-card{padding:10px}
.recent-row{display:flex;align-items:center;gap:12px;padding:13px 12px;border-bottom:1px solid var(--border2);border-radius:8px;transition:.15s}
.recent-row:last-child{border-bottom:none}
.recent-row:hover{background:var(--cream)}
.recent-badge{width:34px;height:34px;border-radius:9px;background:var(--cream2);display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.recent-main{flex:1;min-width:0}
.recent-title{font-weight:600;color:var(--text);display:block;line-height:1.35}
.recent-cat{font-size:12px;color:var(--text3)}
.recent-date{font-size:12px;color:var(--text3);white-space:nowrap}
.support-box{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;border-radius:var(--radius);padding:22px}
.support-box h3{color:#fff;font-size:17px;margin-bottom:6px}
.support-box>p{font-size:13px;color:rgba(255,255,255,.72);margin-bottom:6px}
.support-line{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;padding:10px 0;border-top:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.9)}
.support-line .si{width:20px;text-align:center;flex-shrink:0}
.support-box a{color:var(--gold-light)}
.support-cta{display:inline-block;margin-top:14px;background:var(--gold);color:var(--navy)!important;font-weight:700;padding:9px 18px;border-radius:22px;font-size:13.5px}
.support-cta:hover{background:var(--gold-light)}

/* ── LỌC THEO NĂM HỌC ── */
#year-filter{display:flex;gap:8px;margin:0 0 16px;flex-wrap:wrap}
.yf-btn{padding:7px 16px;border-radius:20px;border:1.5px solid var(--border);background:#fff;color:var(--text2);
  font-size:13.5px;cursor:pointer;font-family:inherit;font-weight:500;transition:.15s}
.yf-btn:hover{border-color:var(--blue-light);color:var(--blue)}
.yf-btn.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:14px;margin-bottom:8px}
.topic-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:15px 17px;
  display:flex;flex-direction:column;gap:5px;color:var(--text);transition:.2s}
.topic-card:hover{border-color:var(--blue-light);box-shadow:var(--shadow);transform:translateY(-2px)}
.topic-top{display:flex;align-items:center;gap:10px}
.topic-icon{font-size:21px}
.topic-title{font-weight:600;font-size:14px;color:var(--navy);line-height:1.3}
.topic-count{font-size:12px;color:var(--text3)}
.topic-years{display:flex;gap:4px;flex-wrap:wrap;margin-top:3px}
.topic-card.hidden{display:none}
.quick-grid[hidden],.topic-grid[hidden]{display:none}
.topic-empty{grid-column:1/-1;color:var(--text3);font-size:14px;padding:10px 2px}
.y-badge{font-size:11px;padding:1px 8px;border-radius:8px;font-weight:500}
.y-all{background:#f1f5f9;color:#475569}.y1{background:#ede9fe;color:#5b21b6}
.y2{background:#d1fae5;color:#065f46}.y3{background:#fef3c7;color:#92400e}.y4{background:#fee2e2;color:#991b1b}
.cat-years{display:inline-flex;gap:5px;margin-left:8px;vertical-align:middle}

/* ── CARD / ARTICLE ── */
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px;margin-bottom:20px}
.card.center{text-align:center}
.page-head h1{margin:0 0 8px;font-size:25px;color:var(--navy);font-family:'Playfair Display',serif;font-weight:800;line-height:1.2}
.lead{color:var(--text2);font-size:15px;margin-top:0}
.muted{color:var(--text3)}
.btn{display:inline-block;background:var(--navy);color:#fff;padding:10px 20px;border-radius:24px;font-weight:600;font-size:14px}
.btn:hover{background:var(--blue)}

/* sub-category grid on a category page */
.subcat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin:18px 0}
.subcat-card{display:flex;flex-direction:column;gap:6px;padding:18px;border:1px solid var(--border);border-radius:var(--radius2);
  color:var(--text);background:var(--cream);transition:.15s}
.subcat-card:hover{border-color:var(--blue-light);box-shadow:var(--shadow2);transform:translateY(-2px)}
.subcat-icon{font-size:24px}
.subcat-title{font-weight:600;font-size:14px}
.subcat-count{font-size:11.5px;color:var(--text3)}

/* ── INLINE SECTIONS (mục con dạng section tĩnh trên trang chuyên mục) ── */
.cat-intro{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 30px;margin-bottom:18px}
.cat-intro h1{margin:0 0 8px;font-size:26px;color:var(--navy);font-family:'Playfair Display',serif;font-weight:800}
.section-jump{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.section-jump a{font-size:13px;background:var(--cream2);color:var(--text2);padding:6px 13px;border-radius:20px;font-weight:500;transition:.15s}
.section-jump a:hover{background:var(--navy);color:#fff}
.info-section{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 30px;margin-bottom:18px;scroll-margin-top:calc(var(--topbar-h) + var(--mainnav-h) + 14px)}
.info-heading{display:flex;align-items:center;gap:12px;font-family:'Playfair Display',serif;font-size:21px;color:var(--navy);margin-bottom:18px}
.info-num{flex-shrink:0;width:32px;height:32px;border-radius:9px;background:var(--navy);color:var(--gold);font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;font-family:'Be Vietnam Pro',sans-serif}
.info-row{display:grid;grid-template-columns:300px 1fr;gap:26px;align-items:start}
.info-section:nth-of-type(even) .info-row{grid-template-columns:1fr 300px}
.info-section:nth-of-type(even) .info-figure{order:2}
.info-figure{margin:0}
.info-figure img{width:100%;border-radius:var(--radius2);box-shadow:var(--shadow2)}
.img-ph{width:100%;aspect-ratio:4/3;border:2px dashed var(--border);border-radius:var(--radius2);background:var(--cream);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;color:var(--text3);font-size:13px;text-align:center;padding:14px}
.img-ph .ph-ico{font-size:30px}
.info-content{min-width:0;font-size:15px}
.info-content :first-child{margin-top:0}
@media (max-width:720px){
  .info-row,.info-section:nth-of-type(even) .info-row{grid-template-columns:1fr}
  .info-section:nth-of-type(even) .info-figure{order:0}
}

/* ── DOC LAYOUT (trang dạng tài liệu: mục lục trái + nội dung) ── */
.doc-layout{display:grid;grid-template-columns:260px 1fr;gap:22px;align-items:start}
.doc-nav{position:sticky;top:calc(var(--topbar-h) + var(--mainnav-h) + 16px);background:#fff;border:1px solid var(--border);
  border-radius:var(--radius);padding:10px;box-shadow:var(--shadow2)}
.doc-nav-title{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--text3);font-weight:700;padding:8px 10px 8px}
.doc-nav ul{list-style:none}
.doc-nav-link{display:flex;gap:10px;align-items:center;padding:10px 11px;border-radius:9px;color:var(--text2);
  font-size:13.5px;font-weight:500;cursor:pointer;transition:.15s}
.doc-nav-link:hover{background:var(--cream2);color:var(--navy)}
.doc-nav-link.active{background:#eff6ff;color:var(--blue);font-weight:600}
.doc-nav-num{flex-shrink:0;width:22px;height:22px;border-radius:7px;background:var(--cream2);color:var(--text3);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.doc-nav-link.active .doc-nav-num{background:var(--navy);color:var(--gold)}
.doc-content{min-width:0}
.doc-pane{display:none;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 30px}
.doc-pane.active{display:block;animation:docFade .2s ease}
@keyframes docFade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.doc-pane-title{font-family:'Playfair Display',serif;font-size:22px;color:var(--navy);margin-bottom:14px}
.doc-figure{margin:0 0 16px}
.doc-figure img{width:100%;border-radius:var(--radius2);box-shadow:var(--shadow2)}
@media (max-width:820px){
  .doc-layout{grid-template-columns:1fr}
  .doc-nav{position:static;display:flex;flex-direction:column}
  .doc-nav ul{display:flex;gap:6px;overflow-x:auto;padding-bottom:4px}
  .doc-nav-link{white-space:nowrap}
  .doc-nav-num{display:none}
}

/* ── MERGED FRAME (gộp tất cả nội dung vào 1 khung) ── */
.merged-frame{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:6px 30px;margin-bottom:18px}
.merged-section{padding:26px 0;border-top:1px solid var(--border2);scroll-margin-top:calc(var(--topbar-h) + var(--mainnav-h) + 14px)}
.merged-section:first-child{border-top:none}
.merged-head{display:flex;align-items:center;gap:12px;font-family:'Playfair Display',serif;font-size:21px;color:var(--navy);margin-bottom:14px}
.merged-num{flex-shrink:0;width:30px;height:30px;border-radius:8px;background:var(--navy);color:var(--gold);font-size:14px;
  font-weight:700;display:flex;align-items:center;justify-content:center;font-family:'Be Vietnam Pro',sans-serif}
.merged-sub{margin-top:20px;padding-top:4px}
.merged-sub:first-of-type{margin-top:6px}
.merged-sub-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;color:var(--navy);margin-bottom:6px}
.merged-sub-title::before{content:'▸';color:var(--gold);font-size:14px}

.page-list{list-style:none;margin:16px 0 0}
.page-list li{border-bottom:1px solid var(--border2)}
.page-list li:last-child{border-bottom:none}
.page-list a{display:block;padding:14px 12px;border-radius:var(--radius2)}
.page-list a:hover{background:var(--cream)}
.page-list-title{font-weight:600;display:block;color:var(--text)}
.page-list-sum{color:var(--text3);font-size:13px}

/* ── ARTICLE BODY (nội dung do biên tập viên soạn) ── */
.page-layout{display:grid;grid-template-columns:1fr 250px;gap:24px;align-items:start}
.page-meta{color:var(--text3);font-size:12.5px;margin:0}
.article-hero{margin:18px 0 0}
.article-hero img{width:100%;border-radius:var(--radius2);box-shadow:var(--shadow2)}
.article-body{margin-top:18px;font-size:15px;color:var(--text)}
.article-body h2{color:var(--navy);font-size:20px;margin:26px 0 10px;font-family:'Playfair Display',serif}
.article-body h3{color:var(--navy);font-size:17px;margin:20px 0 8px}
.article-body p{margin:10px 0}
.article-body ul,.article-body ol{margin:10px 0 10px 22px}
.article-body li{margin:5px 0}
.article-body img{border-radius:var(--radius2);box-shadow:var(--shadow2);margin:12px 0}
.article-body a{color:var(--blue);text-decoration:underline}
.article-body blockquote{border-left:3px solid var(--gold);margin:16px 0;padding:8px 16px;background:#fffbeb;color:#92400e;border-radius:0 var(--radius2) var(--radius2) 0}
.page-aside{position:sticky;top:calc(var(--topbar-h) + var(--mainnav-h) + 16px);background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.aside-title{font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--text3);margin:0 0 10px}
.page-aside ul{list-style:none}
.page-aside li{margin:3px 0}
.page-aside a{font-size:13px;display:block;padding:7px 10px;border-radius:7px;color:var(--text2)}
.page-aside a:hover{background:var(--cream2)}
.page-aside a.current{background:#eff6ff;color:var(--blue);font-weight:600}

/* ── TABLES / BOXES / PILLS (dùng chung cho seed & nội dung soạn thảo) ── */
.data-table{width:100%;border-collapse:collapse;font-size:13px;margin:14px 0}
.data-table th{background:var(--cream2);color:var(--text2);font-weight:600;padding:8px 12px;text-align:left;border-bottom:1px solid var(--border)}
.data-table td{padding:8px 12px;border-bottom:1px solid var(--border2);color:var(--text);vertical-align:top}
.data-table tr:hover td{background:var(--cream)}
.data-table tr:last-child td{border-bottom:none}
.article-body table:not(.data-table){border-collapse:collapse;width:100%;margin:14px 0}
.article-body table:not(.data-table) th,.article-body table:not(.data-table) td{border:1px solid var(--border);padding:8px 12px}
.article-body table:not(.data-table) th{background:var(--cream2)}
.info-box{background:#eff6ff;border-left:3px solid var(--blue-light);border-radius:0 var(--radius2) var(--radius2) 0;
  padding:10px 14px;margin:12px 0;font-size:13px;color:#1e40af;line-height:1.65}
.warn-box{background:#fffbeb;border-left:3px solid var(--gold);border-radius:0 var(--radius2) var(--radius2) 0;
  padding:10px 14px;margin:12px 0;font-size:13px;color:#92400e;line-height:1.65}
.pill{display:inline-block;font-size:11.5px;padding:2px 10px;border-radius:12px;margin:2px 3px 2px 0;font-weight:500}
.p-blue{background:#dbeafe;color:#1e40af}.p-teal{background:#d1fae5;color:#065f46}
.p-amber{background:#fef3c7;color:#92400e}.p-coral{background:#fee2e2;color:#991b1b}
.p-gray{background:#f1f5f9;color:#475569}.p-purple{background:#ede9fe;color:#5b21b6}

/* ── CONTACT GRID ── */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;margin-top:16px}
.contact-card{background:var(--cream);border:1px solid var(--border);border-radius:var(--radius2);padding:14px 16px}
.contact-dept{font-size:13px;font-weight:600;color:var(--navy);margin-bottom:5px}
.contact-info{font-size:12.5px;color:var(--text2);line-height:1.9}
.contact-info a{color:var(--blue)}

/* ── SEARCH PAGE ── */
.search-results-list{list-style:none;margin:16px 0 0}
.search-results-list li{padding:14px 0;border-bottom:1px solid var(--border2)}
.result-title{font-size:16px;font-weight:600;color:var(--navy)}
.result-cat{display:inline-block;font-size:11.5px;background:var(--cream2);color:var(--text2);padding:2px 9px;border-radius:12px;margin-left:8px}
.result-sum{color:var(--text3);margin:4px 0 0;font-size:13.5px}
.inline-search{display:flex;gap:8px;max-width:520px;margin:14px 0}
.inline-search input{flex:1;border:1px solid var(--border);border-radius:24px;padding:10px 18px;font-family:inherit;outline:none}
.inline-search button{border:0;background:var(--navy);color:#fff;border-radius:24px;padding:0 22px;font-weight:600;cursor:pointer;font-family:inherit}

/* ── FOOTER ── */
.site-footer{background:var(--navy);color:#cbd5e1;margin-top:0;padding:36px 0 18px}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1.4fr 1fr auto;gap:28px}
.site-footer strong{color:#fff}
.site-footer a{color:#93c5fd}
.footer-admin a{display:inline-block;border:1px solid #2a3b57;padding:8px 14px;border-radius:20px;color:#cbd5e1}
.footer-admin a:hover{border-color:var(--gold);color:#fff}
.footer-copy{max-width:1200px;margin:18px auto 0;padding:14px 24px 0;border-top:1px solid #22324c;font-size:12.5px;color:#94a3b8;text-align:center}

/* ── BACK TO TOP ── */
#btt{position:fixed;bottom:26px;right:26px;z-index:150;width:44px;height:44px;border-radius:50%;background:var(--navy);
  color:#fff;border:none;font-size:18px;cursor:pointer;box-shadow:var(--shadow);display:none;align-items:center;justify-content:center;transition:.2s}
#btt:hover{background:var(--blue);transform:translateY(-2px)}
#btt.visible{display:flex}

#overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:99;backdrop-filter:blur(2px)}
#overlay.visible{display:block}

/* ── RESPONSIVE ── */
@media (max-width:860px){
  /* Màn hình nhỏ: ẩn menu ngang, hiện nút ☰ mở menu trượt (mục lục) */
  #mainnav{display:none}
  #menu-btn{display:block}
  #layout{padding-top:var(--topbar-h)}
  #main{padding:20px 16px 60px}
  #sidebar{display:block;top:var(--topbar-h);transform:translateX(-100%)}
  #sidebar.open{transform:translateX(0);box-shadow:4px 0 24px rgba(0,0,0,.18)}
  .home-cols{grid-template-columns:1fr}
  .page-layout{grid-template-columns:1fr}
  .page-aside{position:static}
  .footer-inner{grid-template-columns:1fr;gap:18px}
  #topbar{padding:0 12px;gap:10px}
  .brand .logo-text{display:none}
  .topbar-admin{display:none}
  .hero-title{font-size:27px}
  #hero{padding:28px 22px 24px}
}
@media (max-width:560px){
  .data-table thead{display:none}
  .data-table,.data-table tbody,.data-table tr,.data-table td{display:block;width:100%}
  .data-table tr{margin-bottom:12px;border:1px solid var(--border);border-radius:8px;overflow:hidden}
  .data-table td{border:0;border-bottom:1px solid var(--border2);padding-left:42%;position:relative}
  .data-table td:before{content:attr(data-label);position:absolute;left:12px;top:8px;font-weight:600;color:var(--navy);width:36%}
}