:root { --cc: #0b4a9e; }
/* Learning pages (category + chapter reader) — light theme */

/* ---------- category page ---------- */
.cat-hero { background: radial-gradient(700px 300px at 92% 0, color-mix(in srgb, var(--cc) 22%, transparent), transparent 65%), linear-gradient(180deg, #f7faff, #e9f1fc); border-bottom: 1px solid #d7e3f4; }
.cat-hero-inner { max-width: 1280px; margin: 0 auto; padding: 34px 24px 38px; }
.crumbs { font-size: 13px; color: #6b7f9c; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 18px; }
.crumbs a { color: var(--primary); font-weight: 600; }
.crumbs span.cur { color: #3b5578; }
.cat-hero-row { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.cat-badge { width: 84px; height: 84px; border-radius: 22px; background: #fff; display: grid; place-items: center; font-size: 40px; box-shadow: 0 10px 28px rgba(8,44,92,.14); border: 1px solid #dbe6f5; }
.cat-hero h1 { font-family: var(--font-display); font-size: clamp(28px, 4vw, 44px); color: var(--navy); letter-spacing: -.8px; line-height: 1.1; }
.cat-hero p { color: #46607f; max-width: 620px; margin-top: 6px; }
.cat-kpis { margin-left: auto; display: flex; gap: 12px; flex-wrap: wrap; }
.kpi { background: #fff; border: 1px solid #dbe6f5; border-radius: 14px; padding: 12px 20px; text-align: center; min-width: 96px; box-shadow: 0 6px 18px rgba(8,44,92,.07); }
.kpi b { display: block; font-family: var(--font-display); font-size: 26px; color: var(--cc); line-height: 1.2; }
.kpi span { font-size: 12px; color: #6b7f9c; text-transform: uppercase; letter-spacing: .6px; }

.sem-bar { background: #fff; border-bottom: 1px solid var(--border2); position: sticky; top: 67px; z-index: 40; }
.sem-bar-inner { max-width: 1280px; margin: 0 auto; padding: 10px 24px; display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.sem-bar input { border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; font: inherit; min-width: 220px; margin-left: auto; background: #f6f9fe; }

.subj-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }
.subj { background: #fff; border: 1px solid var(--border2); border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; color: var(--text); box-shadow: var(--shadow-card); transition: .2s; }
.subj:hover { transform: translateY(-4px); box-shadow: 0 18px 40px rgba(8,44,92,.15); border-color: color-mix(in srgb, var(--cc) 50%, #fff); color: var(--text); }
.subj-thumb { height: 128px; display: grid; place-items: center; font-size: 48px; background: linear-gradient(135deg, color-mix(in srgb, var(--cc) 14%, #fff), color-mix(in srgb, var(--cc) 28%, #fff)); position: relative; overflow: hidden; }
.subj-thumb img { width: 100%; height: 100%; object-fit: cover; }
.subj-sem { position: absolute; top: 10px; left: 10px; background: #fff; color: var(--navy); font-size: 11.5px; font-weight: 700; padding: 3px 10px; border-radius: 20px; box-shadow: 0 2px 8px rgba(8,44,92,.15); }
.subj-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.subj-body h3 { font-family: var(--font-display); font-size: 17px; color: var(--navy); line-height: 1.3; }
.subj-body p { font-size: 13.5px; color: var(--text2); line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.subj-meta { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: #5b7394; margin-top: auto; padding-top: 6px; }
.subj-meta i { color: var(--cc); margin-right: 4px; }
.prog { height: 7px; background: #e6edf8; border-radius: 8px; overflow: hidden; }
.prog i { display: block; height: 100%; background: linear-gradient(90deg, var(--cc), color-mix(in srgb, var(--cc) 60%, #fff)); border-radius: 8px; }
.prog-label { display: flex; justify-content: space-between; font-size: 12px; color: #5b7394; }
.subj-go { font-weight: 700; font-size: 13.5px; color: var(--primary); display: flex; align-items: center; gap: 6px; }
.sem-title { display: flex; align-items: center; gap: 14px; margin: 8px 0 20px; font-family: var(--font-display); font-size: 20px; color: var(--navy); }
.sem-title::after { content: ""; flex: 1; height: 1px; background: var(--border2); }
.sem-title small { font-family: var(--font); font-size: 12.5px; color: #6b7f9c; font-weight: 500; }

/* ---------- chapter reader ---------- */
.reader { max-width: 1400px; margin: 0 auto; display: grid; grid-template-columns: 320px minmax(0, 1fr); align-items: start; }
.reader-side { position: sticky; top: 67px; height: calc(100vh - 67px); overflow-y: auto; background: #fff; border-right: 1px solid var(--border2); display: flex; flex-direction: column; }
.rs-head { padding: 20px 20px 14px; border-bottom: 1px solid var(--border2); background: linear-gradient(180deg, #f7faff, #fff); }
.rs-back { font-size: 12.5px; font-weight: 600; display: inline-flex; gap: 6px; align-items: center; margin-bottom: 10px; }
.rs-title { font-family: var(--font-display); font-size: 17px; color: var(--navy); line-height: 1.3; }
.rs-sub { font-size: 12.5px; color: #6b7f9c; margin-top: 2px; }
.rs-prog { margin-top: 14px; }
.rs-search { padding: 12px 16px; border-bottom: 1px solid var(--border2); }
.rs-search input { width: 100%; border: 1px solid var(--border); background: #f6f9fe; border-radius: 8px; padding: 9px 12px; font: inherit; font-size: 14px; }
.rs-search input:focus { outline: none; border-color: var(--primary-light); background: #fff; box-shadow: 0 0 0 3px rgba(21,101,192,.12); }
.rs-list { padding: 10px; display: grid; gap: 2px; }
.rs-item { display: flex; gap: 12px; align-items: center; padding: 10px 12px; border-radius: 10px; color: #2d4466; font-size: 14px; font-weight: 500; line-height: 1.35; border: 1px solid transparent; }
.rs-item:hover { background: #f1f6fd; color: var(--primary); }
.rs-item.active { background: var(--primary-pale); color: var(--primary); border-color: #cfe0f6; font-weight: 700; }
.rs-num { flex: 0 0 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 700; background: #eef3fa; color: #5b7394; }
.rs-item.active .rs-num { background: var(--primary); color: #fff; }
.rs-item.done .rs-num { background: #dff3e7; color: #1a8a4a; }
.rs-item span.t { flex: 1; }
.rs-toggle { display: none; }

.reader-main { padding: 30px 40px 60px; min-width: 0; }
.rd-head { margin-bottom: 22px; }
.rd-head h1 { font-family: var(--font-display); font-size: clamp(26px, 3.4vw, 38px); color: var(--navy); letter-spacing: -.6px; line-height: 1.15; margin: 6px 0 12px; }
.rd-meta { display: flex; gap: 8px; flex-wrap: wrap; }
.rd-pill { background: #fff; border: 1px solid var(--border2); border-radius: 20px; padding: 4px 12px; font-size: 12.5px; color: #4a6283; display: inline-flex; gap: 6px; align-items: center; }
.rd-pill.ok { background: #e6f6ed; border-color: #bfe6cf; color: #1a7a43; font-weight: 600; }
.rd-card { background: #fff; border: 1px solid var(--border2); border-radius: 16px; padding: 24px; margin-bottom: 22px; box-shadow: var(--shadow-card); }
.rd-card h3.sec { font-family: var(--font-display); font-size: 20px; color: var(--navy); margin-bottom: 16px; display: flex; gap: 10px; align-items: center; }
.rd-card h3.sec i { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; font-size: 15px; background: var(--primary-pale); color: var(--primary); }
.video-wrap { position: relative; padding-top: 56.25%; border-radius: 12px; overflow: hidden; background: #0b1b33; }
.video-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-desc { color: var(--text2); margin-top: 14px; }
.chapter-images { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.chapter-img-item { border: 1px solid var(--border2); border-radius: 12px; overflow: hidden; background: #f6f9fe; }
.chapter-img-item img { width: 100%; display: block; border-radius: 0; cursor: zoom-in; }
.chapter-img-caption { padding: 8px 12px; font-size: 12.5px; color: #5b7394; }
.rd-card .content-body { color: #243752; line-height: 1.8; font-size: 16px; }
.pdf-embed { width: 100%; height: 78vh; min-height: 480px; border: 1px solid var(--border2); border-radius: 12px; background: #f6f9fe; }
.pdf-toolbar { display: flex; gap: 10px; align-items: center; font-size: 13px; color: #4a6283; margin-bottom: 10px; }

.ex-item { border: 1px solid var(--border2); border-radius: 14px; overflow: hidden; margin-bottom: 14px; background: #fff; }
.ex-head { display: flex; gap: 14px; padding: 18px 20px; align-items: flex-start; }
.ex-no { width: 32px; height: 32px; border-radius: 10px; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 14px; flex-shrink: 0; }
.ex-title { font-weight: 700; color: var(--navy); }
.ex-diff { font-size: 11.5px; font-weight: 700; padding: 3px 10px; border-radius: 20px; background: var(--saffron-pale); color: #b45f00; text-transform: capitalize; margin-left: auto; }
.ex-item details { border-top: 1px solid var(--border2); padding: 14px 20px; background: #f7faff; }
.ex-item summary { cursor: pointer; font-weight: 600; color: var(--primary); }

/* checkpoint card (chapter-tools.php markup, restyled light) */
.lms-end { background: linear-gradient(135deg, #eaf2fd, #f7faff); border: 1px solid #cfe0f6; color: var(--navy); border-radius: 16px; padding: 26px; margin: 26px 0; }
.lms-eyebrow { color: var(--saffron); }
.lms-end h3 { color: var(--navy); }
.lms-end p { color: #46607f; }
.lms-end .lms-links a, .lms-end .lms-assessment a { color: var(--primary); }
.lms-end .lms-assessment { background: #fff; border: 1px solid #dbe6f5; border-radius: 12px; margin-top: 10px; }
.lms-end .lms-assessment span { color: #6b7f9c; }

.rd-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 34px; }
.rd-nav a { display: block; border: 1px solid var(--border2); background: #fff; border-radius: 14px; padding: 14px 18px; color: var(--navy); font-weight: 600; box-shadow: var(--shadow-card); transition: .15s; }
.rd-nav a:hover { border-color: var(--primary-light); transform: translateY(-2px); }
.rd-nav a small { display: block; font-size: 12px; color: #6b7f9c; font-weight: 500; }
.rd-nav a.next { text-align: right; background: var(--primary); color: #fff; border-color: var(--primary); }
.rd-nav a.next small { color: #cfe0f6; }

@media (max-width: 960px) {
  .reader { grid-template-columns: 1fr; }
  .reader-side { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--border2); }
  .rs-collapsible { display: none; }
  .reader-side.open .rs-collapsible { display: block; }
  .rs-toggle { display: block; width: 100%; border: 0; background: var(--primary-pale); color: var(--primary); font: inherit; font-weight: 700; padding: 11px; cursor: pointer; }
  .reader-main { padding: 22px 16px 48px; }
  .cat-kpis { margin-left: 0; }
  .sem-bar { top: 0; position: static; }
  .rd-nav { grid-template-columns: 1fr; }
}

/* ---------- course overview ---------- */
.course-hero { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 32px; align-items: center; }
.course-hero h1 { font-family: var(--font-display); font-size: clamp(28px, 4vw, 42px); color: var(--navy); letter-spacing: -.8px; line-height: 1.12; }
.course-hero p { color: #46607f; max-width: 640px; margin-top: 8px; }
.enrol-card { background: #fff; border: 1px solid #dbe6f5; border-radius: 18px; padding: 24px; text-align: center; display: grid; gap: 12px; justify-items: center; box-shadow: 0 14px 36px rgba(8,44,92,.12); }
.enrol-ring { --p: 0; width: 104px; height: 104px; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--cc, #0b4a9e) calc(var(--p) * 1%), #e6edf8 0); position: relative; }
.enrol-ring::before { content: ""; position: absolute; inset: 10px; background: #fff; border-radius: 50%; }
.enrol-ring b { position: relative; font-family: var(--font-display); font-size: 24px; color: var(--navy); }
.course-cols { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 28px; align-items: start; }
.mod { display: flex; gap: 16px; align-items: center; background: #fff; border: 1px solid var(--border2); border-radius: 14px; padding: 16px 18px; margin-bottom: 12px; color: var(--text); box-shadow: var(--shadow-card); transition: .15s; }
.mod:hover { border-color: var(--primary-light); transform: translateX(3px); color: var(--text); }
.mod-no { flex: 0 0 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; font-weight: 800; background: var(--primary-pale); color: var(--primary); }
.mod.done .mod-no { background: #dff3e7; color: #1a8a4a; }
.mod-main { flex: 1; min-width: 0; display: grid; gap: 2px; }
.mod-main b { color: var(--navy); font-size: 16px; }
.mod-main small { color: var(--text2); font-size: 13px; }
.mod-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 6px; }
.mod-tags em { font-style: normal; font-size: 11.5px; font-weight: 600; background: #f1f6fd; color: #4a6283; padding: 2px 9px; border-radius: 20px; }
.mod-tags em i { color: #d64545; }
.mod-go { color: #9fb2cf; }
.mini-test { display: block; padding: 12px 14px; border: 1px solid var(--border2); border-radius: 10px; margin-bottom: 8px; color: var(--navy); background: #f9fbff; }
.mini-test:hover { border-color: var(--primary-light); }
.mini-test small { display: block; color: #6b7f9c; font-weight: 400; }
@media (max-width: 960px) { .course-hero, .course-cols { grid-template-columns: 1fr; } }

/* about this course */
.about p { color: var(--text2); line-height: 1.7; }
.about h4 { font-family: var(--font-display); color: var(--navy); font-size: 15px; margin: 18px 0 8px; }
.about ul { margin: 0; padding-left: 20px; color: #243752; display: grid; gap: 7px; line-height: 1.6; }
.about ul.ticks { list-style: none; padding: 0; }
.about ul.ticks li { position: relative; padding-left: 28px; }
.about ul.ticks li::before { content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 0; top: 2px; width: 20px; height: 20px; border-radius: 50%; background: #dff3e7; color: #1a8a4a; font-size: 10px; display: grid; place-items: center; }
.course-hero .enrol-card { align-self: start; }
.course-hero p { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------- reader v2: tabbed player ---------- */
.reader { max-width: 1480px; }
.reader-main { background: #f6f9fd; }
.rd-titlebar { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.rd-modno { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; color: var(--saffron); }
.rd-lead { color: #46607f; max-width: 760px; margin-top: 4px; }
.rd-tabs { display: flex; gap: 4px; overflow-x: auto; border-bottom: 2px solid var(--border2); margin-bottom: 20px; position: sticky; top: 67px; background: #f6f9fd; z-index: 20; padding-top: 6px; }
.rd-tab { border: 0; background: none; font: inherit; font-weight: 600; font-size: 14.5px; color: #5b7394; padding: 12px 18px; cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -2px; white-space: nowrap; display: inline-flex; gap: 8px; align-items: center; border-radius: 8px 8px 0 0; }
.rd-tab:hover { color: var(--primary); background: #eaf1fb; }
.rd-tab.on { color: var(--primary); border-bottom-color: var(--saffron); background: #fff; }
.rd-pane[hidden] { display: none; }
.pdf-frame { background: #fff; border: 1px solid var(--border2); border-radius: 16px; padding: 14px; box-shadow: var(--shadow-card); }
.pdf-frame .pdf-toolbar { padding: 4px 6px 12px; }
.pdf-frame .pdf-toolbar span { margin-left: auto; color: #6b7f9c; font-size: 12.5px; }
.pdf-embed { height: calc(100vh - 250px); min-height: 520px; }
@media (max-width: 960px) { .rd-tabs { top: 0; position: static; } .pdf-embed { height: 70vh; } .rd-titlebar { flex-direction: column; } }

/* ===== v4: compact, professional controls (loaded last) ===== */
.btn-primary, .btn-outline, .btn-saffron, .btn-start, .btn-nav-outline, .btn-nav-primary { padding: 9px 18px; font-size: 14px; font-weight: 600; border-radius: 8px; line-height: 1.4; gap: 7px; }
.btn-saffron, .btn-primary { box-shadow: 0 2px 8px rgba(8,44,92,.16); }
.ed-hero .btn-saffron, .ed-hero .btn-outline, .dash-hero .btn-saffron, .dash-hero .btn-outline { padding: 11px 22px; font-size: 14.5px; }
.btn-full { padding: 11px; font-size: 14.5px; }
.btn-start { padding: 8px 18px; font-size: 13.5px; }

/* prev / next */
.rd-nav { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--border2); }
.rd-nav a { display: inline-flex; flex-direction: column; gap: 1px; max-width: 48%; padding: 9px 16px; border-radius: 8px; font-size: 13.5px; font-weight: 600; box-shadow: none; line-height: 1.3; }
.rd-nav a small { font-size: 11px; font-weight: 500; }
.rd-nav a:hover { transform: none; }
.rd-nav a, .rd-nav a.next { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rd-nav a.next { margin-left: auto; text-align: right; }

/* tabs */
.rd-tabs { overflow-y: hidden; scrollbar-width: thin; }
.rd-tab { padding: 9px 15px; font-size: 13.5px; }
.rd-pill { font-size: 12px; padding: 3px 11px; }

/* tests, chips, small action links */
.test-row { padding: 14px 18px; }
.chip { padding: 5px 13px; font-size: 12.5px; }
.lms-end { padding: 20px 22px; }
.lms-end h3 { font-size: 19px; }
.lms-end .btn-primary { padding: 8px 16px; font-size: 13.5px; }
.lms-assessment { padding: 12px 16px; }
.subj-go { font-size: 13px; }
.enrol-card .btn-primary, .enrol-card .btn-start { padding: 8px 18px; font-size: 13.5px; }
.soon-act .btn-primary, .soon-act .btn-outline { padding: 9px 18px; font-size: 14px; }