:root {
  --bg: #fff8f2;
  --sand: #f5e9dc;
  --sand-2: #eedcc8;
  --ink: #1b1b1b;
  --ink-2: #3a3734;
  --muted: #6f675f;
  --red: #e0431f;
  --red-dark: #b9351a;
  --yellow: #f6c445;
  --green: #2f8f5b;
  --line: #e6d6c4;
  --radius: 14px;
  --display: "Archivo Black", "Arial Black", Impact, sans-serif;
  --mono: "Space Mono", ui-monospace, Consolas, monospace;
  --body: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 16px/1.55 var(--body); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }
main { outline: none; }

/* ---------- Type ---------- */
.display { font-family: var(--display); text-transform: uppercase; letter-spacing: .005em; line-height: .98; margin: 0; }
.eyebrow { font: 700 12px/1.2 var(--mono); text-transform: uppercase; letter-spacing: .12em; color: var(--red); margin: 0 0 10px; }
.muted { color: var(--muted); }
h1.display { font-size: clamp(34px, 6vw, 72px); color: var(--red); }
h2.display { font-size: clamp(26px, 3.6vw, 40px); }
h3 { font: 800 15px/1.3 var(--body); text-transform: uppercase; letter-spacing: .02em; margin: 0 0 6px; }

/* ---------- Top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 16px; padding: 12px clamp(16px, 4vw, 40px); background: color-mix(in srgb, var(--bg) 92%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; flex: none; }
.brand img { height: 22px; width: auto; }
.brand-sub { font: 700 11px var(--mono); text-transform: uppercase; letter-spacing: .14em; color: var(--ink); border-left: 1px solid var(--line); padding-left: 10px; }
.search { flex: 1; max-width: 360px; margin-left: auto; }
.search input { width: 100%; border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 8px 14px; font: inherit; font-size: 14px; color: var(--ink); }
.search input:focus { outline: 2px solid var(--red); outline-offset: 1px; }
.me { display: flex; align-items: center; gap: 10px; font-size: 14px; flex: none; }
.me .avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--ink); color: var(--bg); display: grid; place-items: center; font: 700 12px var(--mono); }
.me button { background: none; border: 0; color: var(--muted); font-size: 13px; text-decoration: underline; padding: 0; }

/* ---------- Layout ---------- */
.wrap { max-width: 1180px; margin: 0 auto; padding: clamp(24px, 4vw, 48px) clamp(16px, 4vw, 40px) 80px; }
.card { background: var(--sand); border-radius: var(--radius); padding: 22px; }
.card.dark { background: var(--ink); color: var(--bg); }
.card.red { background: var(--red); color: #fff; }
.grid { display: grid; gap: 16px; }

/* ---------- Buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; border: 0; border-radius: 999px; padding: 12px 22px; font: 700 14px var(--body); text-decoration: none; background: var(--red); color: #fff; transition: background .15s, transform .15s; }
.btn:hover { background: var(--red-dark); }
.btn:active { transform: translateY(1px); }
.btn.dark { background: var(--ink); color: var(--bg); }
.btn.dark:hover { background: #000; }
.btn.ghost { background: transparent; color: var(--ink); box-shadow: inset 0 0 0 1.5px var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--bg); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- Pills, bars ---------- */
.pill { display: inline-block; font: 700 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; padding: 6px 10px; border-radius: 999px; background: #3a3836; color: #f3ece4; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font: 700 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; padding: 4px 8px; border-radius: 6px; background: var(--sand-2); color: var(--ink-2); }
.tag.done { background: var(--green); color: #fff; }
.tag.go { background: var(--yellow); color: var(--ink); }
.bar { height: 8px; border-radius: 999px; background: var(--sand-2); overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--red); border-radius: inherit; transition: width .4s; }
.dark .bar { background: #3a3836; }

/* ---------- Sign in ---------- */
.signin { min-height: calc(100vh - 60px); display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.signin form { display: grid; gap: 14px; margin-top: 26px; max-width: 440px; }
.field label { display: block; font: 700 12px var(--mono); text-transform: uppercase; letter-spacing: .1em; margin-bottom: 6px; }
.field input { width: 100%; padding: 13px 14px; border-radius: 10px; border: 1.5px solid var(--line); background: #fff; font: inherit; }
.field input:focus { outline: none; border-color: var(--red); }
.err { color: var(--red-dark); font-size: 14px; min-height: 1em; margin: 0; }

/* ---------- Dashboard ---------- */
.hero { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; align-items: stretch; margin-bottom: 40px; }
.hero p.lede { font-size: 18px; max-width: 560px; color: var(--ink-2); }
.hero .card.dark { display: flex; flex-direction: column; justify-content: space-between; gap: 18px; }
.stat-row { display: flex; gap: 28px; flex-wrap: wrap; }
.stat b { display: block; font: 400 36px/1 var(--display); color: var(--yellow); }
.stat span { font: 700 11px var(--mono); text-transform: uppercase; letter-spacing: .08em; color: #bdb4aa; }
.modules { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.mod { display: flex; flex-direction: column; gap: 12px; text-decoration: none; background: var(--sand); border-radius: var(--radius); padding: 20px; border: 1.5px solid transparent; transition: border-color .15s, transform .15s; }
.mod:hover { border-color: var(--ink); transform: translateY(-2px); }
.mod .num { font: 400 44px/1 var(--display); color: var(--red); }
.mod h3 { font: 400 20px/1.05 var(--display); text-transform: uppercase; margin: 0; }
.mod p { margin: 0; font-size: 14px; color: var(--muted); flex: 1; }
.mod .meta { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--muted); }
.final-card { margin-top: 16px; display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin: 0 0 18px; }

/* ---------- Module + lesson ---------- */
.course-layout { display: grid; grid-template-columns: 280px 1fr; gap: 36px; align-items: start; }
.side { position: sticky; top: 76px; max-height: calc(100vh - 96px); overflow: auto; }
.side .mod-title { font: 400 18px/1.05 var(--display); text-transform: uppercase; margin: 0 0 14px; }
.side ol { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 2px; }
.side li a { display: grid; grid-template-columns: 22px 1fr; gap: 8px; padding: 8px 10px; border-radius: 8px; text-decoration: none; font-size: 14px; line-height: 1.35; }
.side li a:hover { background: var(--sand); }
.side li a.on { background: var(--ink); color: var(--bg); }
.side .chk { width: 18px; height: 18px; border-radius: 50%; border: 1.5px solid var(--muted); display: grid; place-items: center; font-size: 11px; margin-top: 1px; }
.side .chk.y { background: var(--green); border-color: var(--green); color: #fff; }
.side a.on .chk { border-color: var(--bg); }
.side .quiz-link { margin-top: 6px; }
.slide { border-radius: var(--radius); overflow: hidden; box-shadow: 0 1px 0 var(--line), 0 12px 30px -18px rgba(27,27,27,.35); cursor: zoom-in; background: var(--sand); aspect-ratio: 16 / 9; }
.slide img { width: 100%; height: 100%; object-fit: cover; }
.lesson-title { margin: 6px 0 22px; }
.points { list-style: none; padding: 0; margin: 26px 0 0; display: grid; gap: 10px; counter-reset: p; }
.points li { counter-increment: p; display: grid; grid-template-columns: 38px 1fr; gap: 12px; background: var(--sand); border-radius: 12px; padding: 14px 16px; }
.points li::before { content: counter(p, decimal-leading-zero); font: 700 13px var(--mono); color: var(--red); padding-top: 2px; }
.lens { margin-top: 18px; display: grid; grid-template-columns: auto 1fr; gap: 16px; align-items: center; background: var(--ink); color: var(--bg); border-radius: 12px; padding: 16px 18px; }
.lens .tagline { font: 700 11px var(--mono); text-transform: uppercase; letter-spacing: .1em; background: var(--red); color: #fff; padding: 6px 9px; border-radius: 6px; white-space: nowrap; }
.source { margin-top: 18px; font-size: 13px; color: var(--muted); }
.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.pager .next { margin-left: auto; }
.cover { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; margin-bottom: 32px; }
.lesson-list { display: grid; gap: 8px; }
.lesson-row { display: grid; grid-template-columns: 56px 1fr auto; gap: 14px; align-items: center; padding: 12px 16px; border-radius: 12px; background: var(--sand); text-decoration: none; }
.lesson-row:hover { background: var(--sand-2); }
.lesson-row .n { font: 700 13px var(--mono); color: var(--red); }

/* ---------- Quiz ---------- */
.quiz { max-width: 760px; margin: 0 auto; }
.quiz-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 14px; font: 700 12px var(--mono); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.q-text { font: 700 clamp(20px, 2.6vw, 26px)/1.3 var(--body); margin: 18px 0 22px; }
.opts { display: grid; gap: 10px; }
.opt { text-align: left; display: grid; grid-template-columns: 34px 1fr; gap: 12px; align-items: center; width: 100%; padding: 14px 16px; border-radius: 12px; border: 1.5px solid var(--line); background: #fff; color: var(--ink); transition: border-color .12s, background .12s; }
.opt:hover:not([disabled]) { border-color: var(--ink); }
.opt .k { width: 30px; height: 30px; border-radius: 8px; display: grid; place-items: center; background: var(--sand); font: 700 13px var(--mono); }
.opt.sel { border-color: var(--ink); background: var(--sand); }
.opt.right { border-color: var(--green); background: #e8f4ec; }
.opt.right .k { background: var(--green); color: #fff; }
.opt.wrong { border-color: var(--red); background: #fdebe5; }
.opt.wrong .k { background: var(--red); color: #fff; }
.opt[disabled] { cursor: default; }
.feedback { margin-top: 18px; padding: 16px 18px; border-radius: 12px; background: var(--sand); }
.feedback b { display: block; margin-bottom: 4px; }
.feedback.ok b { color: var(--green); }
.feedback.no b { color: var(--red-dark); }
.feedback a { font-weight: 600; }
.result { text-align: center; padding: 36px 24px; }
.score { font: 400 clamp(72px, 14vw, 140px)/.9 var(--display); color: var(--red); }
.result.pass .score { color: var(--green); }
.review { margin-top: 28px; display: grid; gap: 10px; text-align: left; }
.review .item { background: var(--sand); border-radius: 12px; padding: 14px 16px; font-size: 15px; }
.review .item .ans { margin-top: 6px; font-size: 14px; }

/* ---------- Search ---------- */
.results { display: grid; gap: 10px; }
.results a { display: grid; grid-template-columns: 120px 1fr; gap: 16px; align-items: center; padding: 10px; background: var(--sand); border-radius: 12px; text-decoration: none; }
.results img { border-radius: 8px; aspect-ratio: 16/9; object-fit: cover; }
mark { background: var(--yellow); color: var(--ink); border-radius: 3px; padding: 0 2px; }

/* ---------- Certificate ---------- */
.cert { position: relative; max-width: 1000px; aspect-ratio: 1.414 / 1; margin: 0 auto; background: var(--bg); border: 14px solid var(--ink); padding: clamp(24px, 5vw, 64px); display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; }
.cert::after { content: ""; position: absolute; right: -60px; bottom: -60px; width: 260px; height: 260px; border-radius: 40px; background: var(--red); opacity: .1; transform: rotate(14deg); }
.cert img.logo { height: 34px; width: auto; }
.cert .who { font: 400 clamp(34px, 6vw, 68px)/1 var(--display); text-transform: uppercase; color: var(--red); margin: 12px 0; }
.cert .foot { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; font: 700 12px var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.cert .foot div span { display: block; color: var(--muted); font-weight: 400; margin-bottom: 4px; }

/* ---------- Lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 50; background: rgba(15,15,15,.92); display: grid; place-items: center; padding: 20px; cursor: zoom-out; }
.lightbox[hidden] { display: none; }
.lightbox img { max-height: 92vh; width: auto; border-radius: 10px; }

.closing { margin-top: 56px; text-align: center; }
.closing .display { font-size: clamp(30px, 5vw, 56px); color: var(--red); }
.closing p { max-width: 620px; margin: 14px auto 0; color: var(--ink-2); }
.closing small { display: block; margin-top: 16px; font: 700 12px var(--mono); letter-spacing: .12em; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero, .signin, .cover, .course-layout { grid-template-columns: 1fr; }
  .side { position: static; max-height: none; }
  .final-card { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .search { display: none; }
  .me .name { display: none; }
  .results a { grid-template-columns: 1fr; }
  .lens { grid-template-columns: 1fr; }
  .lesson-row { grid-template-columns: 40px 1fr; }
  .lesson-row .tag { display: none; }
}

@media print {
  .topbar, .no-print { display: none !important; }
  body { background: #fff; }
  .wrap { padding: 0; }
  .cert { border-width: 10px; page-break-inside: avoid; }
  @page { size: landscape; margin: 10mm; }
}