/* ==========================================
   USER GUIDE PAGES (/huong-dan, /en/guide)
   Dùng chung font, màu và header/footer với trang Home (style.css)
========================================== */
.guide-page {
  --guide-text: #3a3a3c;
  --guide-line: #e8e8ed;
  --guide-soft: #f6f6f8;
  --guide-rose: #fff4f4;
  --guide-header-offset: 96px;
}

.guide-skip {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 60;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
}
.guide-skip:focus { left: 16px; }

.guide-main { padding: 4px 0 72px; }

/* Breadcrumb */
.guide-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 8px 0 24px;
  font-size: 14px;
  color: var(--color-body);
}
.guide-breadcrumb a { color: var(--color-body); transition: color 0.2s; }
.guide-breadcrumb a:hover { color: var(--color-primary); }
.guide-breadcrumb [aria-current] { color: var(--color-heading); font-weight: 500; }

/* Layout: mục lục | bài | trong trang này */
.guide-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; }
@media (min-width: 1024px) {
  .guide-layout { grid-template-columns: 240px minmax(0, 1fr); gap: 56px; }
}
@media (min-width: 1280px) {
  .guide-layout { grid-template-columns: 248px minmax(0, 1fr) 200px; gap: 56px; }
}

/* Mục lục các trang */
.guide-sidebar { min-width: 0; }
.guide-toc {
  border: 1px solid var(--guide-line);
  border-radius: 18px;
  background: #fff;
}
.guide-toc-summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
}
.guide-toc-summary::-webkit-details-marker { display: none; }
.guide-toc-summary::after {
  content: '';
  margin-left: auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--color-heading);
  border-bottom: 2px solid var(--color-heading);
  transform: rotate(45deg) translateY(-3px);
  transition: transform 0.2s;
}
.guide-toc[open] .guide-toc-summary::after { transform: rotate(-135deg) translateY(-1px); }
.guide-toc-label { font-weight: 600; color: var(--color-heading); }
.guide-toc-current {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-body);
}
.guide-toc-body { padding: 0 8px 10px; }

@media (min-width: 1024px) {
  .guide-sidebar {
    position: sticky;
    top: var(--guide-header-offset);
    align-self: start;
    max-height: calc(100vh - var(--guide-header-offset) - 16px);
    overflow-y: auto;
  }
  .guide-toc { border: 0; background: transparent; }
  .guide-toc-summary { padding: 4px 12px 12px; cursor: default; pointer-events: none; }
  .guide-toc-summary::after, .guide-toc-current { display: none; }
  .guide-toc-label { font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-body); }
  .guide-toc-body { padding: 0; }
}

.guide-nav-list { display: flex; flex-direction: column; gap: 2px; }
.guide-nav-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 12px;
  font-size: 15px;
  line-height: 1.35;
  color: var(--color-heading);
  transition: background 0.2s, color 0.2s;
}
.guide-nav-link:hover { background: var(--guide-soft); }
.guide-nav-link.is-active { background: var(--guide-rose); color: var(--color-primary); font-weight: 600; }
.guide-nav-num {
  flex: 0 0 18px;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--color-body);
}
.guide-nav-link.is-active .guide-nav-num { color: var(--color-primary); }

/* Bài viết */
.guide-article { min-width: 0; max-width: 760px; }
.guide-header { padding-bottom: 28px; border-bottom: 1px solid var(--guide-line); }
.guide-eyebrow {
  margin-bottom: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.guide-title {
  font-size: 30px;
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-heading);
}
.guide-lead { margin-top: 14px; font-size: 18px; line-height: 1.6; color: var(--color-body); }
.guide-updated { margin-top: 12px; font-size: 14px; color: #8e8e93; }
.guide-start { margin-top: 22px; }
@media (min-width: 640px) {
  .guide-title { font-size: 40px; }
  .guide-lead { font-size: 19px; }
}

/* Nội dung */
.guide-prose { padding-top: 8px; font-size: 16px; line-height: 1.7; color: var(--guide-text); }
@media (min-width: 640px) { .guide-prose { font-size: 17px; } }
.guide-prose > * + * { margin-top: 16px; }
.guide-prose h2,
.guide-prose h3 { position: relative; color: var(--color-heading); scroll-margin-top: var(--guide-header-offset); }
.guide-prose h2 { margin-top: 52px; font-size: 25px; line-height: 1.25; font-weight: 700; letter-spacing: -0.015em; }
.guide-prose h3 { margin-top: 36px; font-size: 20px; line-height: 1.3; font-weight: 600; }
.guide-prose h2 + *, .guide-prose h3 + * { margin-top: 12px; }
.guide-anchor {
  margin-left: 8px;
  color: var(--color-primary);
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.2s;
}
.guide-prose h2:hover .guide-anchor, .guide-prose h3:hover .guide-anchor { opacity: 0.7; }
.guide-prose strong { color: var(--color-heading); font-weight: 600; }
.guide-prose a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.guide-prose a.guide-anchor { text-decoration: none; }
.guide-prose code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--guide-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  color: var(--color-heading);
  word-break: break-word;
}
.guide-prose ul, .guide-prose ol { padding-left: 1.4em; }
.guide-prose ul { list-style: disc; }
.guide-prose ol { list-style: decimal; }
.guide-prose li { padding-left: 4px; }
.guide-prose li + li { margin-top: 8px; }
.guide-prose ol > li::marker { color: var(--color-primary); font-weight: 600; }
.guide-prose ul > li::marker { color: #c7c7cc; }

/* Ảnh chụp màn hình */
.guide-shot { margin: 28px 0; }
.guide-shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--guide-line);
  border-radius: 14px;
  background: var(--guide-soft);
  box-shadow: 0 10px 30px -18px rgba(29, 29, 31, 0.35);
}
.guide-shot figcaption { margin-top: 10px; font-size: 14px; line-height: 1.5; color: var(--color-body); }
.guide-shot--tall { max-width: 520px; }
.guide-shot--phone { max-width: 300px; }
.guide-shot--phone img { border-radius: 22px; }

/* Bảng */
.guide-table { overflow-x: auto; border: 1px solid var(--guide-line); border-radius: 14px; }
.guide-table table { width: 100%; border-collapse: collapse; font-size: 15px; line-height: 1.55; }
.guide-table th {
  padding: 12px 16px;
  background: var(--guide-soft);
  text-align: left;
  font-weight: 600;
  color: var(--color-heading);
  white-space: nowrap;
}
.guide-table td { padding: 12px 16px; border-top: 1px solid var(--guide-line); vertical-align: top; }
.guide-table td:first-child { min-width: 150px; font-weight: 500; color: var(--color-heading); }

/* Ghi chú */
.guide-note {
  padding: 14px 18px;
  border-left: 3px solid var(--color-primary);
  border-radius: 12px;
  background: var(--guide-rose);
}

/* Thẻ các phần (trang mở đầu) */
.guide-cards { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; }
@media (min-width: 640px) { .guide-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.guide-prose a.guide-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--guide-line);
  border-radius: 18px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.guide-prose a.guide-card:hover {
  border-color: rgba(204, 44, 44, 0.35);
  box-shadow: 0 14px 30px -20px rgba(204, 44, 44, 0.45);
  transform: translateY(-2px);
}
.guide-card-num { font-size: 13px; font-weight: 600; color: var(--color-primary); font-variant-numeric: tabular-nums; }
.guide-card-title { font-size: 18px; line-height: 1.3; font-weight: 600; color: var(--color-heading); }
.guide-card-desc { font-size: 15px; line-height: 1.55; color: var(--color-body); }

/* Trang trước / trang tiếp */
.guide-pager { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 56px; }
.guide-pager-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border: 1px solid var(--guide-line);
  border-radius: 16px;
  transition: border-color 0.2s, background 0.2s;
}
.guide-pager-card:hover { border-color: rgba(204, 44, 44, 0.35); background: #fffafa; }
.guide-pager-card--next { text-align: right; grid-column: 2; }
.guide-pager-label { font-size: 13px; color: var(--color-body); }
.guide-pager-card--prev .guide-pager-label::before { content: '← '; }
.guide-pager-card--next .guide-pager-label::after { content: ' →'; }
.guide-pager-title { font-size: 16px; line-height: 1.35; font-weight: 600; color: var(--color-heading); }

/* Hỏi thêm */
.guide-help {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  margin-top: 28px;
  padding: 22px 24px;
  border-radius: 20px;
  background: var(--guide-soft);
}
@media (min-width: 640px) {
  .guide-help { flex-direction: row; align-items: center; justify-content: space-between; }
}
.guide-help-title { font-size: 17px; font-weight: 600; color: var(--color-heading); }
.guide-help-text { margin-top: 4px; font-size: 15px; color: var(--color-body); }

/* Trong trang này */
.guide-onpage { display: none; }
@media (min-width: 1280px) {
  .guide-onpage {
    display: block;
    position: sticky;
    top: var(--guide-header-offset);
    align-self: start;
    max-height: calc(100vh - var(--guide-header-offset) - 16px);
    overflow-y: auto;
  }
}
.guide-onpage-title {
  margin-bottom: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-body);
}
.guide-onpage-list { border-left: 1px solid var(--guide-line); }
.guide-onpage-list a {
  display: block;
  margin-left: -1px;
  padding: 6px 0 6px 14px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.4;
  color: var(--color-body);
  transition: color 0.2s, border-color 0.2s;
}
.guide-onpage-list a:hover { color: var(--color-heading); }
.guide-onpage-list a.is-active { border-left-color: var(--color-primary); color: var(--color-primary); font-weight: 500; }