/* =====================================================================
   Bangkitudacbiet theme — style chính. Tông tím #6c2bd9, font Roboto.
   Dịch trực tiếp từ demo, không Bootstrap, không phụ thuộc framework.
===================================================================== */

:root{
  --purple:#6c2bd9; --purple-dk:#5a1fc0;
  --ink:#10101a; --muted:#6b6b76; --muted-2:#8a8a94;
  --line:#ececf2; --line-2:#f0f0f4;
  --bg:#ffffff; --soft:#fbfbfd; --soft-2:#faf8ff;
  --cyan:#00c2ff; --green:#16a34a;
  --maxw:1280px; --radius:14px;
}

*{box-sizing:border-box;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
html{scroll-behavior:smooth}
body{margin:0;font-family:Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
::selection{background:var(--purple);color:#fff}

.bkt-container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ===================== ICONS (SVG, không emoji) ===================== */
.bkt-ic{width:1.05em;height:1.05em;display:inline-block;vertical-align:-.18em;flex:0 0 auto}
.bkt-ic--xl{width:54px;height:54px;stroke-width:1.5;color:var(--purple)}
.bkt-logo-badge svg{width:20px;height:20px;color:#fff}
.bkt-search button svg{width:18px;height:18px;color:#fff;vertical-align:middle}
.bkt-nav-toggle svg{width:20px;height:20px;vertical-align:middle}
.bkt-footer-logo svg{width:18px;height:18px;color:#fff}
.bkt-widget-title svg{color:var(--purple)}
.bkt-card-meta svg{width:14px;height:14px;color:var(--muted-2)}
.bkt-archive-stats svg{color:var(--purple)}
.bkt-badge-ok{display:inline-flex;align-items:center;gap:5px}
.bkt-btn-pill svg{vertical-align:-.16em}
.bkt-main{display:block;padding-bottom:10px}
.bkt-skip{position:absolute;left:-9999px}
.bkt-skip:focus{left:8px;top:8px;z-index:200;background:#fff;padding:10px 16px;border-radius:8px;box-shadow:0 4px 14px rgba(0,0,0,.2)}
.bkt-muted{color:var(--muted);font-size:13px}
.bkt-hl,.bkt-front-h1 .bkt-hl{color:var(--purple)}

/* ===================== HEADER ===================== */
.bkt-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.bkt-header-in{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:10px 20px}
.bkt-logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.bkt-logo-badge{width:34px;height:34px;border-radius:9px;background:var(--purple);display:flex;align-items:center;justify-content:center;font-size:18px}
.bkt-logo-text{font-weight:900;font-size:19px;letter-spacing:-.3px}
.bkt-logo-accent{color:var(--purple)}
.bkt-logo img{max-height:40px;width:auto}

.bkt-search{flex:1 1 320px;min-width:200px;max-width:560px;display:flex;align-items:center;
  border:1px solid #d9d9e3;border-radius:999px;overflow:hidden;background:#f7f7fa}
.bkt-search input{flex:1;border:0;outline:none;background:transparent;padding:10px 16px;font-size:14px;font-family:inherit;color:var(--ink);min-width:0}
.bkt-search button{border:0;background:var(--purple);color:#fff;padding:0 18px;height:38px;cursor:pointer;font-size:15px}
.bkt-search--block{max-width:520px;margin:14px auto}

.bkt-nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;
  font-size:20px;line-height:1;padding:7px 12px;cursor:pointer}
.bkt-nav{flex:0 0 auto}
.bkt-nav-list{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0;font-size:14px;font-weight:500}
.bkt-nav-list li{margin:0}
.bkt-nav-list a{display:block;padding:8px 12px;border-radius:8px}
.bkt-nav-list a:hover{background:#f3eefe;color:var(--purple)}
.bkt-nav-list .current-menu-item>a,.bkt-nav-list .current-cat>a{background:var(--ink);color:#fff;font-weight:700;border-radius:999px;padding:9px 16px}

/* ===================== FRONT PAGE ===================== */
.bkt-front{padding:8px 0 30px}
.bkt-front-hero{padding:34px 0 6px}
.bkt-front-h1{font-size:clamp(28px,4.4vw,46px);line-height:1.12;font-weight:900;letter-spacing:-1px;margin:0;max-width:920px}

/* ===================== BREADCRUMBS ===================== */
.bkt-breadcrumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted-2);padding:16px 0 0;flex-wrap:wrap}
.bkt-breadcrumbs a{color:var(--purple);font-weight:500}
.bkt-bc-cur{color:var(--ink);font-weight:600}
.bkt-bc-sep{color:var(--muted-2)}

/* ===================== ARCHIVE HERO ===================== */
.bkt-archive-hero{padding:18px 0 22px;border-bottom:1px solid var(--line-2)}
.bkt-archive-title{font-size:clamp(26px,3.6vw,38px);font-weight:900;letter-spacing:-.8px;margin:0 0 10px}
.bkt-archive-desc{font-size:16px;line-height:1.65;color:#44444f;max-width:760px}
.bkt-archive-stats{display:flex;gap:18px;flex-wrap:wrap;margin-top:14px;font-size:13px;color:var(--muted-2)}
.bkt-archive-stats strong{color:var(--ink)}

/* ===================== LAYOUT main + sidebar ===================== */
.bkt-layout{display:flex;gap:32px;align-items:flex-start;flex-wrap:wrap;padding:22px 0 36px}
.bkt-layout-main{flex:1 1 600px;min-width:0}
.bkt-sidebar{flex:0 1 300px;min-width:240px;display:flex;flex-direction:column;gap:18px;position:sticky;top:80px}

/* ===================== GRID + CARD ===================== */
.bkt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.bkt-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.bkt-post-card{overflow:hidden;display:flex;flex-direction:column}
.bkt-post-card:hover{border-color:var(--purple);box-shadow:0 6px 20px rgba(108,43,217,.08)}
.bkt-card-thumb{aspect-ratio:16/9;overflow:hidden;background:#f3eefe}
.bkt-card-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.bkt-card-thumb--ph{display:flex;align-items:center;justify-content:center;color:#fff;font-size:30px;font-weight:900;letter-spacing:1px;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.18) 0 10px,transparent 10px 20px)}
.bkt-card-body{padding:14px 15px;display:flex;flex-direction:column;gap:6px;flex:1}
.bkt-card-tag{font-size:11px;font-weight:700;color:var(--purple);text-transform:uppercase;letter-spacing:.5px}
.bkt-card-title{font-weight:700;font-size:16px;line-height:1.3;margin:0}
.bkt-card-desc{font-size:13px;color:var(--muted);line-height:1.45;flex:1}
.bkt-card-meta{display:flex;gap:14px;font-size:12px;color:var(--muted-2);margin-top:4px}

/* ===================== PAGINATION ===================== */
.bkt-pagination{display:flex;gap:8px;justify-content:center;margin-top:28px;flex-wrap:wrap}
.bkt-pagination .bkt-page{padding:9px 15px;border-radius:10px;border:1px solid #e4e4ea;font-weight:600;font-size:14px;color:var(--ink)}
.bkt-pagination a.bkt-page:hover{border-color:var(--purple);color:var(--purple)}
.bkt-pagination .bkt-page.current{background:var(--purple);color:#fff;border-color:var(--purple)}
.bkt-pagination .bkt-page.dots{border:0}

/* ===================== SIDEBAR WIDGETS ===================== */
.bkt-widget{padding:16px 18px;background:var(--soft)}
.bkt-widget-title{font-weight:800;font-size:15px;margin-bottom:12px}
.bkt-popular{display:flex;flex-direction:column;gap:12px}
.bkt-popular-item{display:flex;gap:11px;align-items:center}
.bkt-popular-n{font-weight:900;font-size:18px;color:#d9d3ec;width:20px;flex:0 0 auto;text-align:center}
.bkt-popular-title{font-size:14px;font-weight:500;line-height:1.35}
.bkt-popular-item:hover .bkt-popular-title{color:var(--purple)}
.bkt-widget--cta{background:var(--soft-2);border-color:#e4e0f2}
.bkt-btn-block{display:block;text-align:center;padding:11px;border-radius:10px;background:var(--purple);color:#fff;font-weight:700;font-size:14px;margin-top:10px}
.bkt-btn-block:hover{background:var(--purple-dk)}
.bkt-tagcloud{display:flex;flex-wrap:wrap;gap:8px}
.bkt-tagpill{padding:6px 12px;border-radius:999px;background:#f0eef7;font-size:12px;font-weight:600;color:var(--ink)}
.bkt-tagpill:hover{background:var(--purple);color:#fff}

/* ===================== SINGLE ARTICLE ===================== */
.bkt-article{max-width:820px}
.bkt-article-eyebrow{font-size:12px;font-weight:700;color:var(--purple);text-transform:uppercase;letter-spacing:.6px;margin-bottom:10px}
.bkt-article-title{font-size:clamp(26px,3.6vw,40px);font-weight:900;letter-spacing:-.8px;line-height:1.15;margin:0 0 16px}
.bkt-article-meta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:0 0 18px;border-bottom:1px solid var(--line-2)}
.bkt-author-mini{display:flex;align-items:center;gap:10px}
.bkt-avatar img{border-radius:50%;display:block}
.bkt-avatar--lg{flex:0 0 auto}
.bkt-author-name{font-weight:700;font-size:14px}
.bkt-author-sub{font-size:12px;color:var(--muted-2)}
.bkt-badge-ok{margin-left:auto;font-size:12px;font-weight:600;color:var(--green);background:#eafaf0;padding:6px 12px;border-radius:999px}
.bkt-article-thumb{aspect-ratio:16/9;border-radius:16px;overflow:hidden;margin:20px 0}
.bkt-article-thumb img{width:100%;height:100%;object-fit:cover}
.bkt-article-tags{margin:22px 0}
.bkt-authorbox{display:flex;gap:14px;align-items:flex-start;padding:18px;background:var(--soft);margin-top:24px}
.bkt-author-name--lg{font-size:16px;font-weight:800}
.bkt-author-bio{font-size:14px;color:#55555f;line-height:1.6;margin:6px 0 0}

/* ===================== RELATED ===================== */
.bkt-related{padding:8px 0 40px;border-top:1px solid var(--line-2)}
.bkt-section-title{font-size:22px;font-weight:900;letter-spacing:-.5px;margin:24px 0 14px}

/* ===================== PAGE ===================== */
.bkt-single-page,.bkt-front{min-width:0}
.bkt-page-head{padding:10px 0 6px}
.bkt-page-title{font-size:clamp(26px,3.6vw,40px);font-weight:900;letter-spacing:-.8px;margin:0}
.bkt-page-thumb{margin:18px 0;border-radius:16px;overflow:hidden}

/* ===================== ENTRY CONTENT (the_content) ===================== */
.bkt-entry{font-size:16px;line-height:1.75;color:#3a3a44;max-width:860px}
.bkt-front .bkt-entry{max-width:none}
.bkt-entry > *{margin-top:0}
.bkt-entry p{margin:0 0 16px}
.bkt-entry h2{font-size:clamp(22px,2.6vw,26px);font-weight:900;letter-spacing:-.5px;color:var(--ink);margin:30px 0 12px}
.bkt-entry h3{font-size:19px;font-weight:800;color:var(--ink);margin:24px 0 10px}
.bkt-entry h4{font-size:16px;font-weight:800;color:var(--ink);margin:20px 0 8px}
.bkt-entry a{color:var(--purple);font-weight:500}
.bkt-entry a:hover{text-decoration:underline}
.bkt-entry ul,.bkt-entry ol{margin:0 0 18px;padding-left:22px}
.bkt-entry li{margin:0 0 6px}
.bkt-entry img{border-radius:12px}
.bkt-entry figure{margin:18px 0}
.bkt-entry figcaption{font-size:13px;color:var(--muted-2);text-align:center;margin-top:6px}
.bkt-entry blockquote{margin:18px 0;padding:12px 18px;border-left:4px solid var(--purple);background:var(--soft-2);border-radius:0 12px 12px 0;color:#44444f}
.bkt-entry table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.bkt-entry th,.bkt-entry td{padding:11px 14px;border-top:1px solid var(--line-2);text-align:left}
.bkt-entry thead th{background:var(--ink);color:#fff;border:0}
.bkt-entry code{background:#f3eefe;padding:2px 6px;border-radius:6px;font-size:.9em}
.bkt-entry hr{border:0;border-top:1px solid var(--line);margin:24px 0}
.bkt-page-links{margin:18px 0;font-weight:600}

/* LuckyWP TOC nằm gọn trong nội dung */
.bkt-entry .lwptoc{border:1px solid var(--line);border-radius:12px;background:var(--soft)}

/* ===================== 404 ===================== */
.bkt-404{text-align:center;padding:50px 0 60px;max-width:680px;margin:0 auto}
.bkt-404-glyph{font-size:48px;margin-bottom:10px}
.bkt-404-title{font-size:clamp(24px,3vw,34px);font-weight:900;letter-spacing:-.6px;margin:0 0 12px}
.bkt-404-desc{font-size:16px;color:var(--muted);margin:0 0 8px}
.bkt-404-actions{margin:16px 0 30px}
.bkt-btn-pill{display:inline-block;padding:13px 24px;border-radius:999px;font-weight:700;font-size:15px;border:1px solid #d9d9e3}
.bkt-btn-pill--solid{background:var(--purple);color:#fff;border-color:var(--purple)}
.bkt-404-popular{text-align:left;margin-top:20px}
.bkt-empty-state{padding:40px 10px;text-align:center;color:var(--muted);font-size:15px}

/* ===================== FOOTER ===================== */
.bkt-footer{border-top:1px solid var(--line);background:var(--ink);color:#cfcfd8;margin-top:20px}
.bkt-footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:28px;padding:34px 20px 18px}
.bkt-footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:12px;font-weight:900;font-size:17px;color:#fff}
.bkt-footer-brand p{font-size:13px;line-height:1.6;color:#9a9aa6;margin:0}
.bkt-footer-title{font-weight:700;color:#fff;font-size:14px;margin-bottom:10px}
.bkt-footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;font-size:13px}
.bkt-footer-links a{color:#b9b9c4}
.bkt-footer-links a:hover{color:#fff}
.bkt-footer-bottom{padding:14px 20px 30px;border-top:1px solid #26263a;font-size:12px;color:#8a8a96;line-height:1.6}

/* ===================== RESPONSIVE ===================== */
@media (max-width:860px){
  .bkt-sidebar{position:static;flex-basis:100%}
}
@media (max-width:720px){
  .bkt-nav-toggle{display:inline-block;order:3}
  .bkt-nav{order:4;flex-basis:100%;display:none}
  .bkt-nav.is-open{display:block}
  .bkt-nav-list{flex-direction:column;align-items:stretch;gap:2px;padding:6px 0}
  .bkt-nav-list a,.bkt-nav-list .current-menu-item>a,.bkt-nav-list .current-cat>a{border-radius:8px;padding:11px 12px}
  .bkt-search{order:2}
}