/* Trang hướng dẫn sử dụng SAP AddOns. Màu lấy theo bộ màu của ứng dụng (SAP-AddOns-WebApp/wwwroot/styles.css),
   chỉnh cho trang đọc dài. Mặc định theo cài đặt sáng / tối của Windows; chọn Sáng / Tối thì nhớ trong trình duyệt. */
:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-muted: #f1f5f9;
  --surface-sunken: #f8fafc;
  --line: rgba(15, 23, 42, 0.14);
  --line-soft: rgba(15, 23, 42, 0.08);
  --text: #0f172a;
  --text-soft: #334155;
  --muted: #526075;
  --heading: #1e3a8a;
  --accent: #f59e0b;
  --accent-2: #0369a1;
  --accent-2-bg: rgba(2, 132, 199, 0.08);
  --on-accent: #0f172a;
  --nav-active-bg: linear-gradient(135deg, #bae6fd, #bbf7d0);
  --ok: #15803d;
  --ok-bg: #f0fdf4;
  --ok-line: #86efac;
  --warn: #92400e;
  --warn-bg: #fffbeb;
  --warn-line: #fcd34d;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --danger-line: #fca5a5;
  --info: #0c4a6e;
  --info-bg: #f0f9ff;
  --info-line: #7dd3fc;
  --code-bg: #f1f5f9;
  --code-text: #9a3412;
  --kbd-bg: #ffffff;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
  --excel-red: #fecaca;
  --excel-orange: #fed7aa;
  --focus: #0284c7;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0f172a;
    --surface: #111c31;
    --surface-muted: #0b1424;
    --surface-sunken: #0d1729;
    --line: rgba(148, 163, 184, 0.24);
    --line-soft: rgba(148, 163, 184, 0.13);
    --text: #e5eefb;
    --text-soft: #cbd5e1;
    --muted: #9fb0c6;
    --heading: #dbeafe;
    --accent: #f59e0b;
    --accent-2: #38bdf8;
    --accent-2-bg: rgba(56, 189, 248, 0.1);
    --on-accent: #0f172a;
    --nav-active-bg: linear-gradient(135deg, #38bdf8, #a7f3d0);
    --ok: #86efac;
    --ok-bg: rgba(34, 197, 94, 0.1);
    --ok-line: rgba(134, 239, 172, 0.45);
    --warn: #fde68a;
    --warn-bg: rgba(245, 158, 11, 0.1);
    --warn-line: rgba(253, 230, 138, 0.45);
    --danger: #fca5a5;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-line: rgba(252, 165, 165, 0.45);
    --info: #bae6fd;
    --info-bg: rgba(56, 189, 248, 0.08);
    --info-line: rgba(125, 211, 252, 0.45);
    --code-bg: rgba(2, 6, 23, 0.5);
    --code-text: #fde68a;
    --kbd-bg: #1e293b;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.18);
    --excel-red: rgba(239, 68, 68, 0.35);
    --excel-orange: rgba(249, 115, 22, 0.35);
    --focus: #38bdf8;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f172a;
  --surface: #111c31;
  --surface-muted: #0b1424;
  --surface-sunken: #0d1729;
  --line: rgba(148, 163, 184, 0.24);
  --line-soft: rgba(148, 163, 184, 0.13);
  --text: #e5eefb;
  --text-soft: #cbd5e1;
  --muted: #9fb0c6;
  --heading: #dbeafe;
  --accent: #f59e0b;
  --accent-2: #38bdf8;
  --accent-2-bg: rgba(56, 189, 248, 0.1);
  --on-accent: #0f172a;
  --nav-active-bg: linear-gradient(135deg, #38bdf8, #a7f3d0);
  --ok: #86efac;
  --ok-bg: rgba(34, 197, 94, 0.1);
  --ok-line: rgba(134, 239, 172, 0.45);
  --warn: #fde68a;
  --warn-bg: rgba(245, 158, 11, 0.1);
  --warn-line: rgba(253, 230, 138, 0.45);
  --danger: #fca5a5;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --danger-line: rgba(252, 165, 165, 0.45);
  --info: #bae6fd;
  --info-bg: rgba(56, 189, 248, 0.08);
  --info-line: rgba(125, 211, 252, 0.45);
  --code-bg: rgba(2, 6, 23, 0.5);
  --code-text: #fde68a;
  --kbd-bg: #1e293b;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.18);
  --excel-red: rgba(239, 68, 68, 0.35);
  --excel-orange: rgba(249, 115, 22, 0.35);
  --focus: #38bdf8;
}

/* ---------- Nền và chữ ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
h1, h2, h3, h4, .brand { font-family: "Bahnschrift", "Segoe UI", sans-serif; color: var(--heading); line-height: 1.3; }
h1 { font-size: 30px; margin: 4px 0 10px; }
h2 { font-size: 22px; margin: 40px 0 12px; padding-top: 8px; border-top: 1px solid var(--line-soft); }
h3 { font-size: 18px; margin: 26px 0 8px; }
h4 { font-size: 16px; margin: 18px 0 6px; }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 14px; padding-left: 24px; }
li { margin: 4px 0; }
a { color: var(--accent-2); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
strong, b { font-weight: 650; }
code {
  font-family: Consolas, "Cascadia Mono", monospace;
  font-size: 0.92em;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1px 6px;
  border-radius: 5px;
  overflow-wrap: anywhere;
}
pre { background: var(--code-bg); padding: 12px 14px; border-radius: 10px; overflow-x: auto; border: 1px solid var(--line-soft); }
pre code { background: none; padding: 0; color: var(--text); }
kbd {
  font-family: inherit;
  font-size: 0.88em;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--kbd-bg);
  white-space: nowrap;
}
/* Tên nút, mục menu, ô trên màn hình — viết đúng như ứng dụng hiển thị */
.ui {
  font-weight: 650;
  color: var(--text);
  background: var(--accent-2-bg);
  border: 1px solid var(--line-soft);
  padding: 0 6px;
  border-radius: 6px;
  overflow-wrap: anywhere;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }

.skip-link { position: absolute; left: 12px; top: -60px; z-index: 50; background: var(--surface); color: var(--text); padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { top: 10px; }

/* ---------- Thanh trên ---------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 14px;
  min-height: 60px; padding: 8px 20px;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-size: 18px; font-weight: 700; white-space: nowrap; }
.brand-mark { width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; background: var(--nav-active-bg); color: var(--on-accent); font-size: 15px; font-weight: 800; }
.brand small { display: block; font-family: "Segoe UI", sans-serif; font-weight: 500; font-size: 12px; color: var(--muted); line-height: 1.2; }
.topbar-spacer { flex: 1; }
.search { position: relative; width: min(340px, 40vw); }
.search label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.search input {
  width: 100%; height: 38px; padding: 0 12px 0 34px;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--surface-sunken); color: var(--text); font: inherit; font-size: 14px;
}
.search::before { content: "⌕"; position: absolute; left: 11px; top: 50%; transform: translateY(-52%); color: var(--muted); font-size: 18px; pointer-events: none; }
.search-results {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0; z-index: 40;
  max-height: 60vh; overflow: auto; margin: 0; padding: 6px; list-style: none;
  background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow);
}
.search-results li { margin: 0; }
.search-results a { display: block; padding: 8px 10px; border-radius: 8px; text-decoration: none; color: var(--text); }
.search-results a small { display: block; color: var(--muted); font-size: 12.5px; }
.search-results a:hover, .search-results a[aria-selected="true"] { background: var(--accent-2-bg); }
.search-results .empty { padding: 10px; color: var(--muted); font-size: 14px; }

.theme-switch { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.theme-switch button { border: 0; background: transparent; color: var(--muted); font: inherit; font-size: 13px; padding: 7px 10px; cursor: pointer; }
.theme-switch button + button { border-left: 1px solid var(--line); }
.theme-switch button[aria-pressed="true"] { background: var(--nav-active-bg); color: var(--on-accent); font-weight: 700; }
.menu-btn { display: none; border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 10px; height: 38px; padding: 0 12px; font: inherit; font-size: 14px; cursor: pointer; }

/* ---------- Bố cục ---------- */
.layout { display: grid; grid-template-columns: 280px minmax(0, 1fr) 220px; max-width: 1440px; margin: 0 auto; }
.sidebar {
  position: sticky; top: 60px; align-self: start;
  height: calc(100vh - 60px); overflow-y: auto;
  padding: 20px 14px 40px 20px; border-right: 1px solid var(--line-soft);
}
.nav-group { margin: 0 0 16px; }
.nav-group h2 { margin: 0 0 4px; padding: 0 10px; border: 0; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.nav-group ul { list-style: none; margin: 0; padding: 0; }
.nav-group li { margin: 1px 0; }
.nav-group a { display: flex; justify-content: space-between; gap: 8px; padding: 6px 10px; border-radius: 8px; color: var(--text-soft); text-decoration: none; font-size: 14.5px; line-height: 1.4; }
.nav-group a:hover { background: var(--accent-2-bg); color: var(--text); }
.nav-group a[aria-current="page"] { background: var(--nav-active-bg); color: var(--on-accent); font-weight: 700; }
.nav-pkg { flex: none; align-self: center; font-size: 11px; font-weight: 700; padding: 0 6px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.nav-group a[aria-current="page"] .nav-pkg { border-color: rgba(15, 23, 42, 0.3); color: var(--on-accent); }

.content { min-width: 0; padding: 28px 44px 80px; }
.article { max-width: 860px; }
.toc { position: sticky; top: 60px; align-self: start; max-height: calc(100vh - 60px); overflow-y: auto; padding: 28px 18px 40px 0; font-size: 13.5px; }
.toc h2 { margin: 0 0 8px; padding: 0; border: 0; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.toc ul { list-style: none; margin: 0; padding: 0 0 0 10px; border-left: 2px solid var(--line-soft); }
.toc li { margin: 0; }
.toc a { display: block; padding: 4px 8px; color: var(--muted); text-decoration: none; line-height: 1.4; }
.toc a:hover { color: var(--text); }
.toc a.active { color: var(--accent-2); font-weight: 650; }

/* ---------- Đầu trang ---------- */
.crumbs { font-size: 13.5px; color: var(--muted); margin: 0 0 4px; }
.crumbs a { color: var(--muted); }
.lead { font-size: 18px; color: var(--text-soft); margin-bottom: 16px; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 22px; padding: 0; list-style: none; }
.meta li { margin: 0; font-size: 13.5px; padding: 3px 10px; border-radius: 999px; background: var(--surface-muted); border: 1px solid var(--line-soft); color: var(--text-soft); }
.meta li b { color: var(--text); }

/* ---------- Khối nội dung ---------- */
.callout { margin: 16px 0; padding: 12px 16px 12px 46px; border-radius: 12px; border: 1px solid var(--info-line); background: var(--info-bg); position: relative; }
.callout::before { position: absolute; left: 14px; top: 11px; font-size: 18px; line-height: 1.5; }
.callout > :last-child { margin-bottom: 0; }
.callout-title { display: block; font-weight: 700; margin-bottom: 2px; }
.callout.note { border-color: var(--info-line); background: var(--info-bg); }
.callout.note::before { content: "ℹ"; color: var(--info); }
.callout.tip { border-color: var(--ok-line); background: var(--ok-bg); }
.callout.tip::before { content: "✓"; color: var(--ok); font-weight: 800; }
.callout.warn { border-color: var(--warn-line); background: var(--warn-bg); }
.callout.warn::before { content: "⚠"; color: var(--warn); }
.callout.danger { border-color: var(--danger-line); background: var(--danger-bg); }
.callout.danger::before { content: "⛔"; font-size: 16px; }

.steps { list-style: none; counter-reset: step; padding: 0; margin: 16px 0 20px; }
.steps > li { counter-increment: step; position: relative; margin: 0 0 14px; padding: 2px 0 0 48px; min-height: 34px; }
.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: var(--nav-active-bg); color: var(--on-accent); font-weight: 800; font-size: 15px;
}
.steps > li > :last-child { margin-bottom: 0; }
.step-title { display: block; font-weight: 700; color: var(--text); }

.flow { display: flex; flex-wrap: wrap; gap: 8px; align-items: stretch; margin: 16px 0 22px; padding: 0; list-style: none; counter-reset: flow; }
.flow li { counter-increment: flow; flex: 1 1 150px; margin: 0; padding: 12px 14px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); font-size: 14.5px; line-height: 1.45; }
.flow li::before { content: "Bước " counter(flow); display: block; font-size: 12px; font-weight: 700; color: var(--accent-2); text-transform: uppercase; letter-spacing: 0.04em; }
.flow li b { display: block; color: var(--text); margin-bottom: 2px; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; margin: 14px 0 24px; }
.card { display: block; padding: 16px 18px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); color: var(--text); text-decoration: none; }
a.card:hover { border-color: var(--accent-2); }
.card h3 { margin: 0 0 6px; font-size: 16.5px; }
.card p { margin: 0; font-size: 14.5px; color: var(--text-soft); }
.card .nav-pkg { display: inline-block; margin-left: 6px; vertical-align: 2px; }

figure.shot { margin: 18px 0 24px; }
figure.shot img { display: block; width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line); box-shadow: var(--shadow); background: var(--surface-muted); }
figure.shot figcaption { margin-top: 8px; font-size: 14px; color: var(--muted); }
figure.shot.narrow img { max-width: 520px; }

.table-wrap { overflow-x: auto; margin: 14px 0 20px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; line-height: 1.5; }
th, td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--line-soft); }
th { background: var(--surface-muted); color: var(--text); font-weight: 650; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; }

/* Mẫu ô Excel tô màu như file kết quả */
.cell-red { background: var(--excel-red); padding: 0 6px; border-radius: 4px; }
.cell-orange { background: var(--excel-orange); padding: 0 6px; border-radius: 4px; }

.badge { display: inline-block; font-size: 12.5px; font-weight: 700; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--line); white-space: nowrap; }
.badge.ok { color: var(--ok); border-color: var(--ok-line); background: var(--ok-bg); }
.badge.warn { color: var(--warn); border-color: var(--warn-line); background: var(--warn-bg); }
.badge.danger { color: var(--danger); border-color: var(--danger-line); background: var(--danger-bg); }
.badge.info { color: var(--info); border-color: var(--info-line); background: var(--info-bg); }

details.faq { margin: 10px 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
details.faq summary { cursor: pointer; padding: 12px 16px; font-weight: 650; list-style-position: outside; }
details.faq > div { padding: 0 16px 12px; }
details.faq[open] summary { border-bottom: 1px solid var(--line-soft); margin-bottom: 10px; }

dl.glossary { margin: 10px 0 20px; display: grid; grid-template-columns: minmax(160px, 220px) minmax(0, 1fr); border: 1px solid var(--line); border-radius: 12px; background: var(--surface); overflow: hidden; }
dl.glossary dt, dl.glossary dd { margin: 0; padding: 10px 14px; border-bottom: 1px solid var(--line-soft); }
dl.glossary dt { font-weight: 650; color: var(--text); background: var(--surface-muted); }
dl.glossary dt:nth-last-of-type(1), dl.glossary dd:last-of-type { border-bottom: 0; }

.pager { display: flex; justify-content: space-between; gap: 14px; margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--line); }
.pager a { flex: 1 1 0; max-width: 48%; padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; text-decoration: none; color: var(--text); background: var(--surface); }
.pager a:hover { border-color: var(--accent-2); }
.pager a small { display: block; color: var(--muted); font-size: 13px; }
.pager a.next { text-align: right; margin-left: auto; }

.footer { max-width: 860px; margin-top: 28px; font-size: 13.5px; color: var(--muted); }

/* ---------- Màn hình hẹp ---------- */
@media (max-width: 1180px) {
  .layout { grid-template-columns: 260px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 860px) {
  .layout { display: block; }
  .menu-btn { display: inline-block; }
  .sidebar { display: none; position: fixed; inset: 60px 0 0 0; z-index: 25; height: auto; background: var(--bg); border-right: 0; padding: 16px 16px 60px; }
  body.nav-open .sidebar { display: block; }
  body.nav-open { overflow: hidden; }
  .content { padding: 20px 16px 60px; }
  .topbar { padding: 8px 16px; gap: 8px 10px; flex-wrap: wrap; }
  .brand small { display: none; }
  .topbar-spacer { display: block; order: 5; flex-basis: 100%; height: 0; }
  .search { order: 10; flex: 1 1 160px; width: auto; }
  .theme-switch { order: 11; }
  html { scroll-padding-top: calc(var(--topbar-h, 104px) + 12px); }
  .sidebar { inset: var(--topbar-h, 104px) 0 0 0; }
  h1 { font-size: 25px; }
  h2 { font-size: 20px; }
  .lead { font-size: 16.5px; }
  .pager { flex-direction: column; }
  dl.glossary { grid-template-columns: 1fr; }
  dl.glossary dt { border-bottom: 0; padding-bottom: 2px; }
  .pager a { max-width: none; }
}
@media (max-width: 420px) {
  .theme-switch button { padding: 7px 8px; }
}
@media print {
  .topbar, .sidebar, .toc, .pager, .skip-link { display: none !important; }
  .layout { display: block; }
  .content { padding: 0; }
  .callout, .card, figure.shot img { box-shadow: none; }
}