/* "My book" — the trainee guidebook inside the app. The page sheet always reads like paper (cream, navy ink), in light and dark. */
.t-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.bk-lang { display: inline-flex; border: 1px solid var(--line-strong); border-radius: 999px; overflow: hidden; background: var(--paper); }
.bk-lang button { border: 0; background: none; padding: 8px 14px; font: 600 14px/1 var(--font); color: var(--mute); min-height: 40px; }
.bk-lang button.on { background: var(--navy); color: #fff; }

.bk-hero { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: center; margin: 12px 0; padding: 18px 16px 22px;
  border-radius: 18px; background: var(--navy-grad); color: #fff; overflow: hidden; box-shadow: var(--shadow); }
.bk-hero::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 6px; background: var(--gold-grad); }
.bk-hero small { color: var(--gold-light); text-transform: uppercase; letter-spacing: .14em; font-size: 11px; font-weight: 700; }
.bk-hero h1 { margin: 2px 0 4px; font-size: 24px; line-height: 1.15; color: #fff; text-wrap: balance; }
.bk-hero p { margin: 0; color: rgba(255, 255, 255, .78); font-size: 14px; }
.bk-hero-mark { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 14px; background: var(--gold-grad); color: #0B1F4B; }
.bk-hero-mark.sm { width: 42px; height: 42px; border-radius: 12px; flex: none; }
.bk-hero-bar { grid-column: 1 / -1; height: 6px; border-radius: 6px; background: rgba(255, 255, 255, .15); overflow: hidden; }
.bk-hero-bar i { display: block; height: 100%; background: var(--gold-grad); border-radius: 6px; }

.bk-unlock h2 { display: flex; align-items: center; gap: 8px; }
.bk-price { display: grid; gap: 6px; margin: 12px 0; padding: 12px 14px; border-radius: 12px; background: var(--gold-soft); border: 1px solid var(--gold); }
.bk-price div { display: flex; justify-content: space-between; font-variant-numeric: tabular-nums; }
.bk-price .total { border-top: 1px dashed var(--gold); padding-top: 6px; font-size: 18px; }
.bk-unlock .btn.big { width: 100%; margin: 6px 0; }
.bk-unlock .btn.ghost { width: 100%; }

.bk-toc { display: grid; gap: 10px; margin: 12px 0; }
.bk-toc-group { background: var(--paper); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; }
.bk-toc-row { display: flex; align-items: center; gap: 12px; padding: 12px 14px; min-height: 56px; color: var(--ink); text-decoration: none; border-top: 1px solid var(--line); }
.bk-toc-row:first-child { border-top: 0; }
.bk-toc-row.mod { background: var(--navy-soft); font-weight: 700; }
.bk-toc-row.locked { color: var(--mute); }
.bk-toc-row:not(.locked):active { background: var(--chip); }
.bk-toc-no { flex: none; display: grid; place-items: center; min-width: 38px; height: 38px; padding: 0 6px; border-radius: 10px; background: var(--chip);
  font: 700 14px/1 var(--font); font-variant-numeric: tabular-nums; color: var(--navy); }
.bk-toc-row.mod .bk-toc-no { background: var(--navy); color: #fff; }
.bk-toc-row:not(.locked) .bk-toc-no { box-shadow: inset 0 0 0 1px var(--gold); }
.bk-toc-t { flex: 1; min-width: 0; line-height: 1.3; }
.bk-toc-t small { display: block; font-weight: 400; font-size: 12px; color: var(--mute); }
.bk-home-card { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); border-color: var(--gold); }
.bk-home-card strong { display: block; font-family: var(--serif); font-size: 18px; }
.bk-home-card small { display: block; color: var(--mute); line-height: 1.35; margin-top: 2px; }
@media (prefers-color-scheme: dark) { .bk-toc-no { color: #c9cdf7; } }

/* ---------- the page sheet ---------- */
.bk-sheet { --bk-navy: #0B1F4B; --bk-gold: #C29A45; --bk-ink: #1d2433; --bk-mute: #5f6275; --bk-cream: #FBF7EE;
  margin: 12px 0; padding: 18px 16px 22px; border-radius: 16px; background-color: #fffdf8; background-repeat: repeat; color: var(--bk-ink);
  border: 1px solid #e6dcc4; box-shadow: var(--shadow); -webkit-user-select: none; user-select: none; -webkit-touch-callout: none;
  font-size: 16px; line-height: 1.55; overflow-wrap: anywhere; min-height: 200px; }
.bk-sheet input[type=checkbox] { -webkit-user-select: auto; user-select: auto; }
.bk-page h1 { font-family: var(--serif); color: var(--bk-navy); font-size: 24px; line-height: 1.2; margin: 0 0 8px; text-wrap: balance; }
.bk-page h2 { font-family: var(--serif); color: var(--bk-navy); font-size: 20px; margin: 18px 0 6px; }
.bk-page h3 { font: 700 13px/1.3 var(--font); color: #9c7630; text-transform: uppercase; letter-spacing: .1em; margin: 18px 0 8px; }
.bk-page p { margin: 0 0 10px; }
.bk-page ul, .bk-page ol { margin: 0 0 10px; padding-left: 22px; }
.bk-page li { margin: 4px 0; }
.bk-lead { font-size: 17px; color: var(--bk-mute); }
.bk-sh { display: flex; gap: 12px; align-items: flex-start; padding-bottom: 12px; margin-bottom: 12px; border-bottom: 2px solid var(--bk-gold); }
.bk-no { flex: none; display: grid; place-items: center; width: 60px; height: 64px; border-radius: 12px; background: var(--bk-navy); color: #fff; text-align: center; }
.bk-no small { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: #f0cf7a; }
.bk-no b { font: 700 26px/1 var(--serif); }
.bk-tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.bk-tags span, .bk-chips span { font-size: 12px; font-weight: 600; padding: 3px 9px; border-radius: 999px; background: #efe6cf; color: #6b5220; }
.bk-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.bk-goal, .bk-target, .bk-home, .bk-box { border-radius: 12px; padding: 12px 14px; margin: 12px 0; }
.bk-goal { background: #0B1F4B; color: #fff; }
.bk-goal small, .bk-target small, .bk-home small, .bk-box small { display: block; font: 700 11px/1.4 var(--font); letter-spacing: .12em; text-transform: uppercase; margin-bottom: 4px; }
.bk-goal small { color: #f0cf7a; }
.bk-target { background: #fbf1d9; border: 1px solid #C29A45; }
.bk-target small { color: #9c7630; }
.bk-home, .bk-box { background: #eef1f8; border: 1px solid #d5dbec; }
.bk-home small, .bk-box small { color: #0B1F4B; }
.bk-dots { list-style: none; padding-left: 0 !important; }
.bk-dots li { position: relative; padding-left: 18px; }
.bk-dots li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 7px; height: 7px; border-radius: 50%; background: var(--bk-gold); }
.bk-ticks { list-style: none; padding-left: 0 !important; }
.bk-ticks li { margin: 6px 0; }
.bk-ticks label { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border-radius: 12px; border: 1px solid #e6dcc4; background: #fff; }
.bk-ticks input { flex: none; width: 24px; height: 24px; margin: 1px 0 0; accent-color: #2e7d4f; }
.bk-ticks input:checked + span { color: #2e7d4f; text-decoration: line-through; text-decoration-color: rgba(46, 125, 79, .5); }
.bk-num { padding-left: 24px; }
.bk-steps { counter-reset: st; list-style: none; padding-left: 0 !important; }
.bk-steps li { counter-increment: st; position: relative; padding-left: 36px; min-height: 28px; }
.bk-steps li::before { content: counter(st); position: absolute; left: 0; top: 0; width: 26px; height: 26px; border-radius: 50%; background: #0B1F4B; color: #fff;
  display: grid; place-items: center; font: 700 13px/1 var(--font); }
.bk-card { border: 1px solid #e6dcc4; border-radius: 14px; padding: 12px 14px; margin: 12px 0; background: #fff; }
.bk-card-h { font: 700 17px/1.3 var(--serif); color: var(--bk-navy); margin: 0 0 6px; }
.bk-cover { margin: -18px -16px 16px; padding: 28px 20px 24px 26px; border-radius: 16px 16px 0 0; background: linear-gradient(160deg, #0f2a63, #0B1F4B 45%, #07153a);
  color: #fff; position: relative; }
.bk-cover::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 7px; background: linear-gradient(135deg, #e3c27a, #C29A45 48%, #9c7630); }
.bk-cover h1 { color: #fff; font-size: 28px; }
.bk-cover p, .bk-cover .bk-lead { color: rgba(255, 255, 255, .8); }
.bk-big { font: 700 28px/1.1 var(--serif); color: var(--bk-navy); }
.bk-cover small { color: #f0cf7a; text-transform: uppercase; letter-spacing: .14em; font-size: 11px; font-weight: 700; }
.bk-mod { margin: -18px -16px 14px; padding: 22px 20px 20px 26px; border-radius: 16px 16px 0 0; background: #0B1F4B; color: #fff; position: relative; }
.bk-mod::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 7px; background: linear-gradient(135deg, #e3c27a, #C29A45 48%, #9c7630); }
.bk-mod .bk-big { display: block; color: #f0cf7a; font-size: 44px; }
.bk-mod small { color: rgba(255, 255, 255, .7); text-transform: uppercase; letter-spacing: .14em; font-size: 11px; font-weight: 700; }
.bk-mod h1 { color: #fff; margin-top: 2px; }
.bk-mod .bk-lead { color: rgba(255, 255, 255, .8); margin: 0; }
.bk-fig { margin: 12px 0; text-align: center; }
.bk-fig img { max-width: 100%; height: auto; border-radius: 10px; border: 1px solid #eee3c9; background: #fff; }
.bk-fig figcaption { font-size: 13px; color: var(--bk-mute); margin-top: 4px; }
.bk-map { list-style: none; padding-left: 0 !important; display: grid; gap: 6px; margin: 10px 0; }
.bk-map li { display: flex; gap: 10px; align-items: baseline; padding: 8px 10px; border-radius: 10px; background: #fbf7ee; border: 1px solid #efe6cf; }
.bk-map b { flex: none; font: 700 15px/1 var(--serif); color: #9c7630; min-width: 24px; }
.bk-tw { overflow-x: auto; margin: 10px 0; }
.bk-t { border-collapse: collapse; width: 100%; font-size: 14px; }
.bk-t th, .bk-t td { border: 1px solid #e6dcc4; padding: 6px 8px; text-align: left; vertical-align: top; }
.bk-t th { background: #0B1F4B; color: #fff; font-weight: 600; }
.bk-t tr:nth-child(even) td { background: #fbf7ee; }
.bk-page[lang=as] { font-family: "Noto Sans Bengali", "Nirmala UI", "Vrinda", var(--font); line-height: 1.7; }

.bk-nav { display: flex; justify-content: space-between; gap: 10px; margin: 4px 0 18px; }
.bk-nav .btn { min-height: 48px; padding: 0 18px; }
@media print { .bk-sheet { display: none !important; } }