/* =========================================================
   kb.css — ห้องสมุดหลักเกณฑ์ราคากลาง 2569
   ========================================================= */

/* ---------- โครงหน้าเอกสาร: sidebar + เนื้อหา ---------- */
.kb-layout {
  display: grid; grid-template-columns: 290px minmax(0, 1fr);
  gap: 28px; padding-top: 30px; padding-bottom: 20px;
  align-items: start;
}
@media (max-width: 980px) { .kb-layout { grid-template-columns: 1fr; } }

.kb-side { position: sticky; top: 80px; }
@media (max-width: 980px) { .kb-side { position: static; } }
.kb-side-box {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); box-shadow: var(--shadow); overflow: hidden;
}
.kb-side-box summary {
  cursor: pointer; list-style: none; padding: 13px 16px;
  font-weight: 600; font-size: .93rem;
  display: flex; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--border);
}
.kb-side-box summary::-webkit-details-marker { display: none; }
.kb-count {
  margin-left: auto; font-size: .72rem; font-weight: 500;
  background: var(--primary-soft); color: var(--primary);
  padding: 1px 9px; border-radius: 999px;
}
.kb-toc {
  list-style: none; margin: 0; padding: 8px;
  max-height: calc(100vh - 210px); overflow-y: auto;
}
@media (max-width: 980px) { .kb-toc { max-height: 300px; } }
.kb-toc li { margin: 0; }
.kb-toc a {
  display: block; padding: 7px 10px; border-radius: 8px;
  font-size: .84rem; font-weight: 300; line-height: 1.45;
  color: var(--text-muted); text-decoration: none !important;
  transition: var(--transition);
}
.kb-toc a:hover { background: var(--primary-soft); color: var(--primary); }
.kb-toc li.cur a { background: var(--primary-soft); color: var(--primary); font-weight: 500; }

/* ---------- หัวหน้าเอกสาร ---------- */
.kb-head h1 { font-size: clamp(1.25rem, 3vw, 1.7rem); max-width: 30em; }
.kb-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  font-size: .86rem !important; color: var(--text-faint) !important;
}
.kb-print {
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-muted); font-family: var(--font-thai);
  font-size: .8rem; font-weight: 400; padding: 4px 14px;
  border-radius: 999px; cursor: pointer; transition: var(--transition);
}
.kb-print:hover { color: var(--primary); border-color: var(--primary); }

/* ---------- เนื้อหาเอกสาร ---------- */
.kb-main { min-width: 0; }
.kb-disclaimer { margin-top: 0; font-size: .88rem; }
.kb-article { margin-top: 20px; font-size: .97rem; }
.kb-article h1 { font-size: 1.35rem; font-weight: 600; margin: 34px 0 12px; }
.kb-article h2 { font-size: 1.2rem; margin: 34px 0 12px; }
.kb-article h3 { font-size: 1.04rem; }
.kb-article table {
  width: 100%; border-collapse: collapse; margin: 18px 0;
  font-size: .88rem; display: block; overflow-x: auto;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); box-shadow: var(--shadow);
}
.kb-article table thead th {
  background: var(--surface-2); color: var(--text);
  font-weight: 600; font-size: .82rem;
  padding: 10px 14px; border-bottom: 2px solid var(--border);
  text-align: left; white-space: nowrap;
}
.kb-article table td {
  padding: 8px 14px; border-bottom: 1px solid var(--border);
  vertical-align: top; font-weight: 300;
}
.kb-article table tbody tr:nth-child(even) { background: color-mix(in srgb, var(--surface-2) 60%, transparent); }
.kb-article table tbody tr:hover { background: color-mix(in srgb, var(--primary-soft) 55%, transparent); }
.kb-article blockquote {
  border-left: 4px solid var(--c-amber); background: var(--c-amber-soft);
  border-radius: var(--radius-sm); padding: 12px 18px; margin: 16px 0;
  font-size: .92rem;
}
.kb-article blockquote p { margin-bottom: 6px; }
.kb-article hr { border: none; border-top: 1px solid var(--border); margin: 26px 0; }
.kb-article code { background: var(--surface-2); padding: 1px 6px; border-radius: 6px; font-size: .88em; }

.page-mark {
  text-align: right; color: var(--text-faint); font-size: .7rem;
  letter-spacing: .06em; margin: 26px 0 6px;
  border-top: 1px dashed var(--border); padding-top: 4px;
}

/* ---------- ปุ่มก่อนหน้า/ถัดไป ---------- */
.kb-pn { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.kb-pn .btn { font-size: .84rem; max-width: 100%; }
.kb-pn-spacer { flex: 1; }

/* ---------- สารบัญหมวด ---------- */
.kb-doclist {
  --dl: var(--primary); --dl-soft: var(--primary-soft);
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
}
@media (max-width: 760px) { .kb-doclist { grid-template-columns: 1fr; } }
.kb-doclist.accent-blue    { --dl: var(--c-blue);    --dl-soft: var(--c-blue-soft); }
.kb-doclist.accent-emerald { --dl: var(--c-emerald); --dl-soft: var(--c-emerald-soft); }
.kb-doclist.accent-amber   { --dl: var(--c-amber);   --dl-soft: var(--c-amber-soft); }
.kb-doclist.accent-rose    { --dl: var(--c-rose);    --dl-soft: var(--c-rose-soft); }
.kb-doclist.accent-violet  { --dl: var(--c-violet);  --dl-soft: var(--c-violet-soft); }
.kb-doclist.accent-sky     { --dl: var(--c-sky);     --dl-soft: var(--c-sky-soft); }
.kb-doclist a {
  display: flex; align-items: flex-start; gap: 12px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 13px 16px;
  color: var(--text); font-weight: 400; font-size: .92rem; line-height: 1.5;
  text-decoration: none !important; box-shadow: var(--shadow);
  transition: var(--transition);
}
.kb-doclist a:hover {
  transform: translateY(-2px); box-shadow: var(--shadow-lg);
  border-color: color-mix(in srgb, var(--dl) 40%, var(--border));
}
.kb-doc-num {
  flex: 0 0 30px; height: 30px; border-radius: 9px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--dl-soft); color: var(--dl);
  font-weight: 600; font-size: .8rem;
}

/* ---------- ค้นหา ---------- */
.kb-search { margin-top: 18px; max-width: 560px; }
.kb-search input {
  width: 100%; padding: 13px 20px;
  border-radius: 999px; border: 1.5px solid var(--border);
  background: var(--surface); color: var(--text);
  font-family: var(--font-thai); font-size: .95rem; font-weight: 300;
  box-shadow: var(--shadow); outline: none; transition: var(--transition);
}
.kb-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 18%, transparent); }
.kb-results { list-style: none; margin: 10px 0 0; padding: 0; max-width: 560px; }
.kb-results li { margin-bottom: 6px; }
.kb-results a {
  display: block; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 9px 14px;
  font-size: .88rem; color: var(--text); text-decoration: none !important;
  box-shadow: var(--shadow); transition: var(--transition);
}
.kb-results a:hover { border-color: var(--primary); color: var(--primary); }
.kb-results .tag { margin-right: 8px; }
.kb-noresult { color: var(--text-faint); font-size: .88rem; padding: 8px 4px; }

/* ---------- พิมพ์ ---------- */
@media print {
  .site-header, .kb-side, .kb-pn, .ad-slot, .site-footer,
  .kb-print, .kb-disclaimer, .hero-grid-layer { display: none !important; }
  .kb-layout { display: block; padding: 0; }
  .page-head { background: none; border: none; padding: 0 0 10px; }
  body { background: #fff; color: #000; font-size: 12px; }
  .kb-article table { box-shadow: none; }
  .kb-article table td, .kb-article table thead th { padding: 4px 8px; }
  a { color: #000; text-decoration: none; }
}