/* ============================================================
   BizHub365 User Manual
   Screen, print (A4), and ebook stylesheet
   Brand: Outfit, #1B54B6 / #0B1F42 / #1D7A70 / #E8B84A
   ============================================================ */

@font-face {
  font-family: "Outfit";
  src: url("fonts/outfit-latin-400.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("fonts/outfit-latin-500.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("fonts/outfit-latin-600.ttf") format("truetype");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("fonts/outfit-latin-700.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Outfit";
  src: url("fonts/outfit-latin-800.ttf") format("truetype");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

:root {
  --bh-blue: #1b54b6;
  --bh-blue-deep: #154399;
  --bh-blue-light: #e8f0ff;
  --bh-teal: #1d7a70;
  --bh-teal-deep: #16675f;
  --bh-teal-light: #e3f6f3;
  --bh-navy: #0b1f42;
  --bh-navy-mid: #123364;
  --bh-accent: #e8b84a;
  --bh-ink: #0a1830;
  --bh-ink-soft: #1e3050;
  --bh-muted: #3d4f6b;
  --bh-page: #eef3fa;
  --bh-surface: #ffffff;
  --bh-border: #c5d6f0;
  --bh-success: #0c5c42;
  --bh-warning: #d9a03a;
  --bh-danger: #8b1520;
  --bh-info: #3b7de8;
  --bh-font: "Outfit", "Segoe UI", system-ui, sans-serif;
  --measure: 46rem;
  --sidebar: 17.5rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  print-color-adjust: exact;
  -webkit-print-color-adjust: exact;
}

body {
  margin: 0;
  font-family: var(--bh-font);
  color: var(--bh-ink);
  background: var(--bh-page);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--bh-blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--bh-blue-deep);
}

/* ---------- Screen chrome ---------- */

.screen-only {
  display: block;
}

.print-only {
  display: none;
}

.toolbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.25rem;
  background: linear-gradient(135deg, var(--bh-navy) 0%, var(--bh-navy-mid) 48%, var(--bh-blue) 100%);
  color: #fff;
  box-shadow: 0 8px 24px rgba(11, 31, 66, 0.18);
}

.toolbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.toolbar-brand small {
  display: block;
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #bfd0f5;
}

.toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  font: 600 0.85rem/1 var(--bh-font);
  text-decoration: none;
}

.btn-light {
  background: #fff;
  color: var(--bh-navy);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.btn:hover {
  filter: brightness(1.05);
}

.layout {
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
  min-height: calc(100vh - 3.4rem);
}

.toc-sidebar {
  position: sticky;
  top: 3.4rem;
  height: calc(100vh - 3.4rem);
  overflow: auto;
  padding: 1.25rem 1rem 2rem;
  background: #f7faff;
  border-right: 1px solid var(--bh-border);
}

.toc-sidebar h2 {
  margin: 0 0 0.75rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bh-muted);
}

.toc-sidebar ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-sidebar .part-label {
  margin: 1rem 0 0.35rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bh-teal);
}

.toc-sidebar a {
  display: block;
  padding: 0.28rem 0.45rem;
  border-radius: 6px;
  color: var(--bh-ink-soft);
  text-decoration: none;
  font-size: 0.86rem;
}

.toc-sidebar a:hover,
.toc-sidebar a[aria-current="location"] {
  background: var(--bh-blue-light);
  color: var(--bh-blue-deep);
}

.manual {
  max-width: calc(var(--measure) + 6rem);
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

/* ---------- Cover ---------- */

.cover {
  position: relative;
  margin: 1.5rem 0 2.5rem;
  min-height: 36rem;
  padding: 2.75rem 2.5rem 2rem;
  border-radius: 20px;
  overflow: hidden;
  color: #fff;
  background-color: #0b1f42;
  background-image: linear-gradient(145deg, #071428 0%, #0b1f42 42%, #123364 70%, #1b54b6 100%);
  print-color-adjust: exact;
  -webkit-print-color-adjust: exact;
}

.cover h1,
.cover-wordmark,
.cover-chip {
  color: #fff;
}

.cover-kicker {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bh-accent);
}

.cover h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.cover .lead {
  max-width: 34rem;
  font-size: 1.15rem;
  color: #d7e4ff;
}

.cover-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.cover-chip {
  padding: 0.75rem 0.9rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.cover-chip strong {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #9db6e8;
}

.cover-wordmark {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 2rem;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: linear-gradient(160deg, var(--bh-accent), #c9922a);
  color: var(--bh-navy);
  font-weight: 800;
}

/* ---------- Front matter / chapters ---------- */

.frontmatter,
.chapter {
  background: var(--bh-surface);
  border: 1px solid var(--bh-border);
  border-radius: 16px;
  padding: 2rem 2rem 2.25rem;
  margin: 0 0 1.5rem;
  box-shadow: 0 10px 28px rgba(10, 24, 48, 0.05);
}

.chapter-kicker {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--bh-teal);
}

.chapter > header h1,
.frontmatter h1 {
  margin: 0 0 0.6rem;
  font-size: 2rem;
  letter-spacing: -0.03em;
  color: var(--bh-navy);
}

.chapter-lead,
.lede {
  font-size: 1.08rem;
  color: var(--bh-ink-soft);
}

h2 {
  margin: 1.8rem 0 0.55rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--bh-navy);
}

h3 {
  margin: 1.35rem 0 0.4rem;
  font-size: 1.08rem;
  color: var(--bh-navy-mid);
}

p,
ul,
ol {
  margin: 0 0 0.9rem;
}

li + li {
  margin-top: 0.25rem;
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0 0 1.1rem;
}

.steps li {
  position: relative;
  padding: 0.7rem 0.85rem 0.7rem 3.1rem;
  border: 1px solid var(--bh-border);
  border-radius: 10px;
  background: #f8fbff;
}

.steps li + li {
  margin-top: 0.45rem;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0.7rem;
  top: 0.7rem;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  background: var(--bh-blue);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  display: grid;
  place-items: center;
}

.find-it {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  margin: 0 0 1rem;
  font-size: 0.92rem;
}

.find-it .crumb {
  background: var(--bh-blue-light);
  color: var(--bh-blue-deep);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-weight: 600;
}

.find-it .sep {
  color: var(--bh-muted);
}

.callout {
  border-radius: 12px;
  padding: 0.9rem 1rem 0.95rem;
  margin: 0 0 1rem;
  border: 1px solid var(--bh-border);
}

.callout strong.label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.callout p:last-child {
  margin-bottom: 0;
}

.callout.tip {
  background: var(--bh-teal-light);
  border-color: #b7e2db;
}

.callout.tip .label {
  color: var(--bh-teal-deep);
}

.callout.note {
  background: var(--bh-blue-light);
  border-color: #c5d6f0;
}

.callout.note .label {
  color: var(--bh-blue-deep);
}

.callout.caution {
  background: #fff6e4;
  border-color: #efd39a;
}

.callout.caution .label {
  color: #8a6414;
}

.callout.danger {
  background: #fdecee;
  border-color: #f0c3c8;
}

.callout.danger .label {
  color: var(--bh-danger);
}

.table-wrap {
  overflow-x: auto;
  margin: 0 0 1.1rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--bh-border);
}

th {
  background: var(--bh-navy);
  color: #fff;
  font-weight: 600;
}

tr:nth-child(even) td {
  background: #f7faff;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 0.85rem;
  margin: 0 0 1.1rem;
}

.card {
  border: 1px solid var(--bh-border);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  background: #f8fbff;
}

.card h3 {
  margin-top: 0;
}

.kbd {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.84em;
  background: #eef2f8;
  border: 1px solid #d3dce8;
  border-radius: 4px;
  padding: 0.05rem 0.35rem;
}

.figure {
  margin: 0 0 1.1rem;
  border: 1px solid var(--bh-border);
  border-radius: 12px;
  overflow: hidden;
  background: #f4f7fc;
}

.figure-ui {
  padding: 1rem 1.1rem;
  min-height: 8.5rem;
}

.figure figcaption {
  padding: 0.45rem 0.8rem;
  font-size: 0.82rem;
  color: var(--bh-muted);
  background: #fff;
  border-top: 1px solid var(--bh-border);
}

.ui-bar {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.7rem;
}

.ui-pill {
  background: var(--bh-navy);
  color: #fff;
  border-radius: 999px;
  padding: 0.18rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
}

.ui-pill.muted {
  background: #d7e3f6;
  color: var(--bh-navy);
}

.ui-card-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.ui-stat {
  background: #fff;
  border: 1px solid var(--bh-border);
  border-radius: 8px;
  padding: 0.55rem;
}

.ui-stat b {
  display: block;
  color: var(--bh-blue);
  font-size: 1.05rem;
}

.toc-print ol {
  columns: 2;
  gap: 2rem;
  list-style: none;
  padding: 0;
}

.toc-print li {
  break-inside: avoid;
}

.toc-print a {
  text-decoration: none;
  color: inherit;
}

.edition-box {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.smallprint {
  font-size: 0.88rem;
  color: var(--bh-muted);
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .toc-sidebar {
    position: relative;
    top: 0;
    height: auto;
    max-height: 16rem;
  }

  .cover,
  .chapter,
  .frontmatter {
    padding: 1.25rem;
  }
}

/* ---------- Print / PDF (A4, paged media) ---------- */

@page {
  size: A4;
  margin: 18mm 16mm 20mm 16mm;
}

@page :first {
  margin: 0;
  background: #0b1f42;
}

@page chapter {
  @top-left {
    content: "BizHub365 User Manual";
    font-family: "Outfit", "Segoe UI", sans-serif;
    font-size: 9pt;
    color: #3d4f6b;
  }
  @top-right {
    content: string(chapter-title);
    font-family: "Outfit", "Segoe UI", sans-serif;
    font-size: 9pt;
    color: #1b54b6;
  }
  @bottom-left {
    content: "bizhub365.com";
    font-family: "Outfit", "Segoe UI", sans-serif;
    font-size: 9pt;
    color: #5a6b86;
  }
  @bottom-right {
    content: counter(page);
    font-family: "Outfit", "Segoe UI", sans-serif;
    font-size: 10pt;
    color: #0b1f42;
    font-weight: 700;
  }
}

@media print {
  html {
    font-size: 10.5pt;
  }

  body {
    background: #fff;
    color: #0a1830;
  }

  .screen-only {
    display: none !important;
  }

  .print-only {
    display: block !important;
  }

  .layout {
    display: block;
  }

  .manual {
    max-width: none;
    margin: 0;
    padding: 0;
  }

  .chapter,
  .frontmatter {
    border: 0;
    box-shadow: none;
    border-radius: 0;
    padding: 0;
    margin: 0 0 8mm;
    background: transparent;
  }

  .cover {
    page: auto;
    page-break-after: always;
    break-after: page;
    min-height: 297mm;
    margin: 0;
    padding: 28mm 18mm 22mm;
    border-radius: 0;
    color: #ffffff;
    background-color: #0b1f42 !important;
    background-image: linear-gradient(145deg, #071428 0%, #0b1f42 42%, #123364 70%, #1b54b6 100%) !important;
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  * {
    font-family: "DejaVu Sans", "Liberation Sans", sans-serif !important;
  }

  h1,
  h2,
  h3 {
    letter-spacing: 0 !important;
    word-spacing: 0.08em;
  }

  .cover-kicker,
  .chapter-kicker {
    letter-spacing: 0.04em;
  }

  .frontmatter,
  .chapter {
    page: chapter;
  }

  .chapter {
    string-set: chapter-title attr(data-title);
    break-before: page;
    page-break-before: always;
  }

  .chapter:first-of-type,
  #ch-how-to-use {
    break-before: auto;
    page-break-before: auto;
  }

  h1,
  h2,
  h3 {
    break-after: avoid;
    page-break-after: avoid;
  }

  .callout,
  .steps li,
  table,
  .card,
  .figure {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  .toc-print a::after {
    content: "  " target-counter(attr(href), page);
    float: right;
    color: var(--bh-blue);
    font-weight: 700;
  }

  th {
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }

  .cover,
  .callout,
  .ui-pill,
  .ui-stat,
  .find-it .crumb {
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }
}