/* =========================================================================
 * BIM Knowledge Hub — component dùng chung cho bài viết cụm /bim-xay-dung/
 *
 * MỘT file cho CẢ batch (không tạo CSS riêng từng bài). Chỉ nạp trên single
 * post thuộc category `bim-xay-dung` và trên archive của category đó.
 *
 * Namespace `.vdt-bimx-*` để không đụng `.vdt-bim-*` (page /khoa-hoc-bim/),
 * `.vdt-bimm-*` (Quản lý BIM) và `.vdt-bimc-*` (Điều phối BIM).
 *
 * Bảng đã được main.css style đầy đủ -> ở đây chỉ bọc cho cuộn ngang.
 * ========================================================================= */

.vdt-post-content .vdt-bimx,
.vdt-bimx-hub {
  --bimx-navy: #0b1f3a;
  --bimx-blue: #1e5bff;
  --bimx-blue-ink: #1442c8;
  --bimx-cyan-ink: #05677a;
  --bimx-gold-ink: #7a5405;
  --bimx-ink: #172033;
  --bimx-muted: #5b6579;
  --bimx-line: #dbe4f0;
  --bimx-soft: #f2f7fc;
  --bimx-radius: 16px;
}

/* --------------------------------------------------- Direct answer box */

.vdt-post-content .vdt-bimx-answer {
  margin: 0 0 26px;
  padding: 20px 22px;
  border: 1px solid var(--bimx-line);
  border-left: 4px solid var(--bimx-blue);
  border-radius: 0 var(--bimx-radius) var(--bimx-radius) 0;
  background: linear-gradient(180deg, #f7fafe, #eef4fd);
}

.vdt-post-content .vdt-bimx-answer > strong {
  display: block;
  margin-bottom: 8px;
  color: var(--bimx-blue-ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.vdt-post-content .vdt-bimx-answer p { margin: 0 0 10px; }
.vdt-post-content .vdt-bimx-answer p:last-child { margin-bottom: 0; }

/* ------------------------------------------------------------ Callout */

.vdt-post-content .vdt-bimx-note,
.vdt-post-content .vdt-bimx-warn {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 4px solid var(--bimx-blue);
  border-radius: 0 12px 12px 0;
  background: #eef2fe;
}

.vdt-post-content .vdt-bimx-warn {
  border-left-color: #f5b842;
  background: #fdf6e7;
}

.vdt-post-content .vdt-bimx-note p,
.vdt-post-content .vdt-bimx-warn p { margin: 0; }
.vdt-post-content .vdt-bimx-note p + p,
.vdt-post-content .vdt-bimx-warn p + p { margin-top: 10px; }

/* -------------------------------------------------------------- Cards */

.vdt-post-content .vdt-bimx-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin: 26px 0;
  padding: 0;
  list-style: none;
}

.vdt-post-content .vdt-bimx-cards > li {
  margin: 0;
  padding: 20px 18px;
  border: 1px solid var(--bimx-line);
  border-radius: var(--bimx-radius);
  background: #fff;
}

.vdt-post-content .vdt-bimx-cards > li + li { margin-top: 0; }

.vdt-post-content .vdt-bimx-cards strong {
  display: block;
  margin-bottom: 6px;
  color: var(--bimx-navy);
  font-size: 16.5px;
}

.vdt-post-content .vdt-bimx-cards span {
  display: block;
  color: var(--bimx-muted);
  font-size: 15px;
  line-height: 1.62;
}

.vdt-post-content .vdt-bimx-cards em {
  display: block;
  margin-bottom: 8px;
  color: var(--bimx-cyan-ink);
  font-size: 12.5px;
  font-weight: 700;
  font-style: normal;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ------------------------------------------------- Flow / pipeline dọc */

.vdt-post-content .vdt-bimx-flow {
  margin: 26px 0;
  padding: 0;
  list-style: none;
  counter-reset: bimxflow;
}

.vdt-post-content .vdt-bimx-flow > li {
  position: relative;
  margin: 0 0 10px;
  padding: 16px 18px 16px 58px;
  border: 1px solid var(--bimx-line);
  border-radius: 12px;
  background: #fff;
  counter-increment: bimxflow;
}

.vdt-post-content .vdt-bimx-flow > li::before {
  content: counter(bimxflow, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(30, 91, 255, .1);
  color: var(--bimx-blue-ink);
  font-size: 12.5px;
  font-weight: 700;
}

.vdt-post-content .vdt-bimx-flow strong {
  display: block;
  margin-bottom: 3px;
  color: var(--bimx-navy);
}

.vdt-post-content .vdt-bimx-flow span {
  color: var(--bimx-muted);
  font-size: 15px;
  line-height: 1.6;
}

/* Nhấn một bước trong chuỗi (vd: Clash Detection chỉ là 1 mắt xích) */
.vdt-post-content .vdt-bimx-flow > li.is-mark {
  border-color: #f5b842;
  background: #fdf6e7;
}

.vdt-post-content .vdt-bimx-flow > li.is-mark::before {
  background: rgba(245, 184, 66, .3);
  color: var(--bimx-gold-ink);
}

/* --------------------------------------------------- Ecosystem / map */

.vdt-post-content .vdt-bimx-map {
  margin: 26px 0;
  padding: 22px 20px;
  border: 1px solid var(--bimx-line);
  border-radius: var(--bimx-radius);
  background: var(--bimx-soft);
}

.vdt-post-content .vdt-bimx-map__root {
  display: block;
  margin: 0 auto 16px;
  max-width: 320px;
  padding: 12px 16px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--bimx-blue) 0%, #1461cf 54%, #0a6f93 100%);
  color: #fff;
  font-weight: 700;
  text-align: center;
}

.vdt-post-content .vdt-bimx-map__branches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.vdt-post-content .vdt-bimx-map__branches > li {
  margin: 0;
  padding: 14px 16px;
  border: 1px solid var(--bimx-line);
  border-radius: 12px;
  background: #fff;
  text-align: center;
}

.vdt-post-content .vdt-bimx-map__branches strong {
  display: block;
  margin-bottom: 4px;
  color: var(--bimx-navy);
  font-size: 15px;
}

.vdt-post-content .vdt-bimx-map__branches span {
  color: var(--bimx-muted);
  font-size: 14px;
  line-height: 1.55;
}

/* ---------------------------------------------------- Decision tree */

.vdt-post-content .vdt-bimx-tree {
  margin: 26px 0;
  padding: 0;
  list-style: none;
}

.vdt-post-content .vdt-bimx-tree > li {
  margin: 0 0 12px;
  padding: 18px 20px;
  border: 1px solid var(--bimx-line);
  border-radius: var(--bimx-radius);
  background: #fff;
}

.vdt-post-content .vdt-bimx-tree > li > strong {
  display: block;
  margin-bottom: 10px;
  color: var(--bimx-navy);
  font-size: 16.5px;
}

.vdt-post-content .vdt-bimx-branch {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.vdt-post-content .vdt-bimx-branch > li {
  margin: 0;
  padding: 13px 15px;
  border: 1px dashed var(--bimx-line);
  border-radius: 11px;
  background: var(--bimx-soft);
  font-size: 15px;
  line-height: 1.6;
}

.vdt-post-content .vdt-bimx-branch b {
  display: inline-block;
  margin-right: 6px;
  padding: 2px 9px;
  border-radius: 999px;
  background: rgba(0, 184, 217, .14);
  color: var(--bimx-cyan-ink);
  font-size: 12px;
  font-weight: 700;
}

/* ------------------------------------------------------------ Persona */

.vdt-post-content .vdt-bimx-persona {
  margin: 22px 0;
  padding: 20px 22px;
  border: 1px solid var(--bimx-line);
  border-left: 4px solid #00b8d9;
  border-radius: 0 var(--bimx-radius) var(--bimx-radius) 0;
  background: #fff;
}

.vdt-post-content .vdt-bimx-persona > strong {
  display: block;
  margin-bottom: 8px;
  color: var(--bimx-cyan-ink);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
}

/* ---------------------------------------------------- Bảng cuộn ngang */

.vdt-post-content .vdt-bimx-tablewrap {
  margin: 26px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.vdt-post-content .vdt-bimx-tablewrap > table { margin: 0; min-width: 640px; }

/* ----------------------------------------------------------- Soft CTA */

.vdt-post-content .vdt-bimx-cta {
  margin: 30px 0;
  padding: 22px 24px;
  border: 1px solid var(--bimx-line);
  border-radius: var(--bimx-radius);
  background: linear-gradient(135deg, #f4f8ff, #eef6fb);
}

.vdt-post-content .vdt-bimx-cta strong {
  display: block;
  margin-bottom: 6px;
  color: var(--bimx-navy);
  font-size: 17px;
}

.vdt-post-content .vdt-bimx-cta p { margin: 0 0 14px; color: var(--bimx-muted); }

.vdt-post-content .vdt-bimx-cta__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.vdt-post-content a.vdt-bimx-btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 11px 22px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--bimx-blue) 0%, #1461cf 54%, #0a6f93 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.vdt-post-content a.vdt-bimx-btn:hover { color: #fff; opacity: .93; }

.vdt-post-content a.vdt-bimx-btn--ghost {
  background: #fff;
  border: 1px solid var(--bimx-line);
  color: var(--bimx-navy);
}

.vdt-post-content a.vdt-bimx-btn--ghost:hover { color: var(--bimx-navy); background: var(--bimx-soft); }

/* ------------------------------------------------- Kiến thức liên quan */

.vdt-post-content .vdt-bimx-related {
  margin: 34px 0 0;
  padding: 24px;
  border: 1px solid var(--bimx-line);
  border-radius: var(--bimx-radius);
  background: var(--bimx-soft);
}

.vdt-post-content .vdt-bimx-related > strong {
  display: block;
  margin-bottom: 14px;
  color: var(--bimx-navy);
  font-size: 17px;
}

.vdt-post-content .vdt-bimx-related ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.vdt-post-content .vdt-bimx-related li { margin: 0; }

.vdt-post-content .vdt-bimx-related a {
  display: block;
  padding: 13px 16px;
  border: 1px solid var(--bimx-line);
  border-radius: 11px;
  background: #fff;
  color: var(--bimx-blue-ink);
  font-weight: 700;
  text-decoration: none;
}

.vdt-post-content .vdt-bimx-related a:hover {
  border-color: rgba(0, 184, 217, .55);
  color: var(--bimx-navy);
}

/* =============================================== Category hub archive */

.vdt-bimx-hub {
  margin: 0 0 34px;
  padding: 34px 30px;
  border-radius: 22px;
  background:
    radial-gradient(700px 320px at 88% -10%, rgba(0, 184, 217, .18), transparent 62%),
    linear-gradient(155deg, #0b1f3a 0%, #071729 100%);
  color: #fff;
}

.vdt-bimx-hub__eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  padding: 6px 13px;
  border-radius: 999px;
  background: rgba(0, 184, 217, .18);
  color: #d6f2fb;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* `body.vdt-page h1..h6` là (0,1,2) nên `.vdt-bimx-hub h1` (0,1,1) thua và chữ
 * bị chìm vào nền navy. Thêm class body `.vdt-bimx-hub-page` để đạt (0,2,1). */
.vdt-bimx-hub-page .vdt-bimx-hub h1,
.vdt-bimx-hub-page .vdt-bimx-hub .vdt-bimx-hub__title,
.vdt-bimx-hub h1,
.vdt-bimx-hub .vdt-bimx-hub__title {
  margin: 0 0 12px;
  color: #fff;
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.18;
}

/* Tiêu đề "Chủ đề trong chuyên mục" nằm trên nền sáng -> giữ màu navy. */
.vdt-bimx-hub-page .vdt-blog-container > .vdt-bimx-hub__title {
  margin: 0 0 16px;
  color: #0b1f3a;
}

.vdt-bimx-hub p {
  margin: 0;
  max-width: 70ch;
  color: rgba(255, 255, 255, .86);
  font-size: 16.5px;
  line-height: 1.75;
}

.vdt-bimx-topics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin: 0 0 34px;
  padding: 0;
  list-style: none;
}

.vdt-bimx-topics > li { margin: 0; }

.vdt-bimx-topics a,
.vdt-bimx-topics span.is-soon {
  display: block;
  height: 100%;
  padding: 18px 18px;
  border: 1px solid var(--bimx-line, #dbe4f0);
  border-radius: 16px;
  background: #fff;
  color: #172033;
  text-decoration: none;
}

.vdt-bimx-topics a:hover {
  border-color: rgba(0, 184, 217, .55);
  box-shadow: 0 14px 32px rgba(11, 31, 58, .08);
  transform: translateY(-3px);
}

.vdt-bimx-topics a { transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; }

.vdt-bimx-topics strong {
  display: block;
  margin-bottom: 5px;
  color: #0b1f3a;
  font-size: 16px;
}

.vdt-bimx-topics em {
  display: block;
  color: #5b6579;
  font-size: 14px;
  font-style: normal;
  line-height: 1.55;
}

.vdt-bimx-topics span.is-soon {
  background: #f7f9fc;
  color: #5b6579;
  opacity: .78;
}

.vdt-bimx-topics span.is-soon strong { color: #5b6579; }

.vdt-bimx-courses {
  margin: 34px 0 0;
  padding: 26px 24px;
  border: 1px solid var(--bimx-line, #dbe4f0);
  border-radius: 20px;
  background: #f2f7fc;
}

.vdt-bimx-courses > strong {
  display: block;
  margin-bottom: 14px;
  color: #0b1f3a;
  font-size: 18px;
}

.vdt-bimx-courses ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.vdt-bimx-courses li { margin: 0; }

.vdt-bimx-courses a {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--bimx-line, #dbe4f0);
  border-radius: 14px;
  background: #fff;
  color: #1442c8;
  font-weight: 700;
  text-decoration: none;
}

.vdt-bimx-courses a:hover { border-color: rgba(0, 184, 217, .55); color: #0b1f3a; }

.vdt-bimx-courses a span {
  display: block;
  margin-top: 4px;
  color: #5b6579;
  font-size: 14px;
  font-weight: 400;
}

/* -------------------------------------------------------- Responsive */

@media (max-width: 768px) {
  .vdt-bimx-hub { padding: 26px 20px; border-radius: 18px; }
  .vdt-post-content .vdt-bimx-answer,
  .vdt-post-content .vdt-bimx-cta,
  .vdt-post-content .vdt-bimx-related { padding: 18px 16px; }
  .vdt-post-content .vdt-bimx-cta__row { flex-direction: column; }
  .vdt-post-content a.vdt-bimx-btn { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  .vdt-bimx-topics a { transition: none; }
  .vdt-bimx-topics a:hover { transform: none; }
}