/* ============================================================
   Jornada — site dos cursos @1_ponto_de_vista
   Estetica: minimalismo quente (Notion) + espaco premium (Apple)
   + tipografia display marcante (ElevenLabs). Paleta P&B da marca.
   ============================================================ */

:root {
  --paper: #fafaf9;
  --paper-soft: #f3f1ec;
  --card: #ffffff;
  --ink: #1c1c1a;
  --ink-soft: #45433e;
  --muted: #82807a;
  --line: #e7e4dc;
  --cream: #f5ebe0;
  --marker: #f7e7c6;
  --marker-deep: #f0d79e;
  --glow: rgba(247, 220, 150, 0.55);
  --warm: 255, 196, 120; /* luz quente abat-jour (igual ao site) */

  --maxw: 1180px;
  --read: 720px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 2px rgba(28, 28, 26, 0.04), 0 2px 8px rgba(28, 28, 26, 0.05);
  --shadow-md: 0 6px 24px rgba(28, 28, 26, 0.08), 0 1px 3px rgba(28, 28, 26, 0.06);
  --shadow-lg: 0 24px 60px rgba(28, 28, 26, 0.12);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --display: 'Anton', 'Inter', sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
::selection { background: var(--marker); }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  padding: 14px clamp(18px, 4vw, 40px);
  background: rgba(250, 250, 249, 0.78);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.topbar.scrolled { border-color: var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.01em; }
.brand .eye { width: 34px; color: var(--ink); display: block; }
.brand .crest { height: 34px; width: auto; color: var(--ink); display: block; }
.brand .crest svg { height: 100%; width: auto; display: block; }
.brand small { display: block; font-weight: 500; font-size: 11px; color: var(--muted); letter-spacing: 0.02em; margin-top: -3px; }
.brand .bdot { color: var(--ink); }
/* link do Mapa com ícone (mostra que é outra proposta) */
.navlink-mapa { display: inline-flex; align-items: center; gap: 7px; }
.navlink-mapa .ico-map { color: var(--marker-deep); flex: none; }
.btn .ico-map { flex: none; margin-right: 2px; }
.topbar nav { margin-left: auto; display: flex; gap: 6px; align-items: center; }
.topbar nav a {
  padding: 8px 14px; border-radius: 999px; font-size: 14px; font-weight: 500;
  color: var(--ink-soft); transition: background 0.2s, color 0.2s;
}
.topbar nav a:hover { background: var(--paper-soft); color: var(--ink); text-shadow: 0 0 14px rgba(var(--warm), 0.5); }
.topbar nav a.cta { background: var(--ink); color: var(--paper); }
.topbar nav a.cta:hover { background: #000; box-shadow: 0 0 22px 1px rgba(var(--warm), 0.4); text-shadow: none; }
.topbar nav a.back-site { color: var(--muted); padding-left: 0; }
.topbar nav a.back-site:hover { background: transparent; color: var(--ink); }
.menu-toggle { display: none; }

/* ---------- scroll progress (aula) ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--marker-deep), var(--ink));
  z-index: 60; transition: width 0.1s linear; opacity: 0;
}
.scroll-progress.on { opacity: 1; }

/* ---------- view transitions ---------- */
#app { min-height: 70vh; }
.view { animation: rise 0.5s var(--ease) both; }
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(18px, 4vw, 40px); }

/* ============================================================
   LANDING
   ============================================================ */
.hero { position: relative; overflow: hidden; padding: clamp(70px, 12vh, 140px) 0 clamp(50px, 8vh, 90px); }
.hero-stars { position: absolute; inset: 0; pointer-events: none; opacity: 0.5; }
.hero-brasao { display: block; width: clamp(64px, 7vw, 84px); height: auto; color: var(--ink); margin: 0 0 22px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--muted); background: var(--card); border: 1px solid var(--line);
  padding: 7px 14px; border-radius: 999px; box-shadow: var(--shadow-sm);
}
.hero h1 {
  font-family: var(--display); font-weight: 400;
  font-size: clamp(44px, 8.5vw, 108px); line-height: 0.98; letter-spacing: -0.01em;
  margin: 26px 0 0; max-width: 16ch; text-transform: none;
}
.hero h1 .hl { background: linear-gradient(180deg, transparent 16%, var(--marker) 16% 86%, transparent 86%); padding: 0 .03em; border-radius: 2px; }
.hero p.lede {
  margin: 28px 0 0; max-width: 56ch; font-size: clamp(17px, 2.2vw, 21px);
  color: var(--ink-soft); line-height: 1.55;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 38px; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform 0.2s var(--ease), box-shadow 0.2s, background 0.2s;
}
.btn-primary { background: var(--ink); color: var(--paper); box-shadow: var(--shadow-md); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn-ghost { background: var(--card); color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn .arrow { transition: transform 0.2s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* section heading */
.section { padding: clamp(50px, 8vh, 96px) 0; }
.section-head { max-width: 60ch; margin-bottom: 40px; }
.section-kicker { font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--marker-deep); }
.section-kicker b { color: var(--ink); }
.section h2 { font-size: clamp(28px, 4vw, 44px); line-height: 1.08; letter-spacing: -0.02em; margin: 12px 0 0; font-weight: 700; }
.section .sub { color: var(--muted); font-size: 17px; margin-top: 14px; }

/* course cards */
.courses-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; }
.course-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 30px 30px 26px; box-shadow: var(--shadow-sm); overflow: hidden;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s;
}
.course-card::before {
  content: ''; position: absolute; inset: -40% 30% auto -10%; height: 220px;
  background: radial-gradient(closest-side, var(--glow), transparent 70%);
  opacity: 0; transition: opacity 0.4s; pointer-events: none;
}
.course-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: #ddd9cf; }
.course-card:hover::before { opacity: 1; }
.course-card .ord { font-family: var(--display); font-size: 15px; color: var(--marker-deep); letter-spacing: 0.04em; }
.course-card h3 { font-size: 27px; line-height: 1.1; letter-spacing: -0.02em; margin: 10px 0 0; font-weight: 700; }
.course-card .csub { color: var(--muted); font-size: 14px; margin-top: 4px; }
.course-card .cblurb { color: var(--ink-soft); font-size: 15.5px; margin: 16px 0 0; line-height: 1.55; }
.course-card .meta { display: flex; gap: 18px; margin: 20px 0 0; font-size: 13px; color: var(--muted); }
.course-card .meta b { color: var(--ink); font-weight: 600; }
.course-card .go { margin-top: 22px; display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 15px; }
.course-card .go .arrow { transition: transform 0.2s var(--ease); }
.course-card:hover .go .arrow { transform: translateX(4px); }

/* steps (como funciona) */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px; }
.step { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); }
.step .n { font-family: var(--display); font-size: 30px; color: var(--marker-deep); }
.step h4 { margin: 8px 0 6px; font-size: 18px; }
.step p { color: var(--ink-soft); font-size: 14.5px; margin: 0; }

.thesis { text-align: center; max-width: 22ch; margin: 0 auto; font-family: var(--display); font-weight: 400; font-size: clamp(30px, 5vw, 58px); line-height: 1.04; letter-spacing: -0.01em; }
.thesis .hl { background: linear-gradient(180deg, transparent 18%, var(--marker) 18% 86%, transparent 86%); padding: 0 .04em; border-radius: 3px; }

/* footer (igual ao do site) */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 60px; font-size: 14px; color: var(--muted); }
.site-footer .foot-bar { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(18px, 4vw, 40px); display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap; }
.site-footer .social { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer a { transition: color 0.3s, text-shadow 0.3s; }
.site-footer a:hover { color: var(--ink); text-shadow: 0 0 14px rgba(var(--warm), 0.5); }

/* ============================================================
   LOGIN
   ============================================================ */
.login-wrap { position: relative; min-height: 74vh; display: grid; place-items: center; padding: 40px 20px; overflow: hidden; }
/* portal: um campo de estrelas com brilho quente, como o hero da landing */
.login-wrap::before {
  content: ''; position: absolute; inset: -10% -10% auto -10%; height: 130%; pointer-events: none; z-index: 0;
  background:
    radial-gradient(ellipse 58% 48% at 50% 38%, var(--glow), transparent 70%),
    radial-gradient(rgba(28, 28, 26, 0.06) 1px, transparent 1.4px);
  background-size: auto, 26px 26px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000, transparent);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000, transparent);
  opacity: 0.65; animation: portalBreathe 7s var(--ease) infinite;
}
@keyframes portalBreathe { 0%, 100% { opacity: 0.5; } 50% { opacity: 0.8; } }
.login-card { position: relative; z-index: 1; width: 100%; max-width: 384px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); padding: 36px 34px; }
.login-card.magic { box-shadow: var(--shadow-lg), 0 0 50px -12px var(--glow); }
.login-card .eye { width: 42px; color: var(--ink); margin: 0 auto 16px; display: block; }
/* olho magico: maior, com brilho que pulsa; a pupila segue o ponteiro (app.js) */
.login-card .eye.magic-eye { width: 78px; margin: 4px auto 18px; animation: eyeGlow 4.5s var(--ease) infinite; }
.login-card .eye.magic-eye #loginPupil { transition: transform 0.16s var(--ease); }
@keyframes eyeGlow {
  0%, 100% { filter: drop-shadow(0 0 7px rgba(247, 220, 150, 0.3)); }
  50% { filter: drop-shadow(0 0 18px rgba(var(--warm), 0.55)); }
}
@media (prefers-reduced-motion: reduce) {
  .login-wrap::before, .login-card .eye.magic-eye { animation: none; }
  .login-card .eye.magic-eye #loginPupil { transition: none; }
}
.login-card h2 { font-size: 23px; text-align: center; margin: 0 0 4px; letter-spacing: -0.01em; }
.login-card p.note { text-align: center; color: var(--muted); font-size: 13.5px; margin: 0 0 24px; }
.login-card .field { margin-bottom: 14px; }
.login-card label { display: block; font-size: 12px; font-weight: 600; color: var(--ink-soft); margin: 0 0 6px; letter-spacing: 0.01em; }
.login-card input { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; font: inherit; font-size: 15px; background: var(--paper); transition: border-color 0.2s, box-shadow 0.2s; }
.login-card input:focus { outline: none; border-color: var(--marker-deep); box-shadow: 0 0 0 3px var(--glow); }
.login-card button { width: 100%; margin-top: 8px; padding: 13px; border-radius: 999px; border: none; background: var(--ink); color: var(--paper); font: inherit; font-weight: 600; font-size: 15px; cursor: pointer; transition: transform 0.2s var(--ease), background 0.2s; }
.login-card button:hover { transform: translateY(-2px); }
.login-card button:disabled { opacity: 0.6; cursor: default; transform: none; }
.login-card .err { color: #b3261e; font-size: 13px; text-align: center; margin: 12px 0 0; min-height: 1.1em; }
.login-back { display: block; text-align: center; margin-top: 16px; color: var(--muted); font-size: 13px; }
.login-back:hover { color: var(--ink); }

/* ============================================================
   COURSE OVERVIEW
   ============================================================ */
.course-hero { padding: clamp(48px, 8vh, 92px) 0 30px; }
.breadcrumb { font-size: 13px; color: var(--muted); display: flex; gap: 8px; align-items: center; margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--ink); }
.course-hero h1 { font-family: var(--display); font-weight: 400; font-size: clamp(40px, 7vw, 84px); line-height: 1; margin: 0; letter-spacing: -0.01em; }
.course-hero .csub { color: var(--ink-soft); font-size: clamp(17px, 2.4vw, 22px); margin: 18px 0 0; max-width: 50ch; }
.progress-row { display: flex; align-items: center; gap: 16px; margin: 30px 0 0; flex-wrap: wrap; }
.pbar { flex: 1; min-width: 200px; height: 8px; background: var(--paper-soft); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.pbar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--marker-deep), var(--ink)); width: 0; transition: width 0.6s var(--ease); }
.pbar-label { font-size: 13px; color: var(--muted); white-space: nowrap; }

.module-block { padding: 30px 0; border-top: 1px solid var(--line); }
.module-block:first-of-type { border-top: none; }
.module-head { display: flex; align-items: baseline; gap: 16px; }
.module-head .mnum { font-family: var(--display); font-size: clamp(30px, 5vw, 54px); color: var(--line); line-height: 1; flex: none; }
.module-head h2 { font-size: clamp(20px, 3vw, 28px); letter-spacing: -0.01em; margin: 0; }
.module-intro { color: var(--ink-soft); font-size: 15.5px; margin: 12px 0 18px; max-width: 70ch; }
.module-intro p { margin: 0 0 8px; }
.aula-list { display: grid; gap: 10px; }
.aula-row {
  display: flex; align-items: center; gap: 16px;
  padding: 15px 18px; background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  box-shadow: var(--shadow-sm); transition: transform 0.2s var(--ease), box-shadow 0.2s, border-color 0.2s;
}
.aula-row:hover { transform: translateX(4px); box-shadow: var(--shadow-md); border-color: #ddd9cf; }
.aula-row .check { width: 22px; height: 22px; border-radius: 999px; border: 1.5px solid var(--line); flex: none; display: grid; place-items: center; color: transparent; font-size: 12px; }
.aula-row.done .check { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.aula-row .anum { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; width: 30px; flex: none; }
.aula-row .atitle { font-weight: 500; font-size: 15.5px; }
.aula-row .arrow { margin-left: auto; color: var(--muted); transition: transform 0.2s var(--ease); }
.aula-row:hover .arrow { transform: translateX(3px); color: var(--ink); }

/* ============================================================
   LESSON
   ============================================================ */
.lesson-layout { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 0; align-items: start; }
.lesson-sidebar {
  position: sticky; top: 61px; height: calc(100vh - 61px); overflow-y: auto;
  padding: 28px 18px 60px; border-right: 1px solid var(--line);
}
.lesson-sidebar .sb-course { font-weight: 700; font-size: 15px; letter-spacing: -0.01em; padding: 0 10px 14px; }
.lesson-sidebar .sb-course a { color: var(--muted); font-size: 12px; font-weight: 500; display: block; }
.lesson-sidebar .sb-course a:hover { color: var(--ink); }
.sb-mod { margin-top: 14px; }
.sb-mod-title { font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); padding: 6px 10px; }
.sb-aula {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 9px;
  font-size: 13.5px; color: var(--ink-soft); transition: background 0.18s, color 0.18s;
}
.sb-aula:hover { background: var(--paper-soft); color: var(--ink); }
.sb-aula.active { background: var(--cream); color: var(--ink); font-weight: 600; }
.sb-aula .dot { width: 7px; height: 7px; border-radius: 999px; border: 1.5px solid var(--line); flex: none; }
.sb-aula.done .dot { background: var(--ink); border-color: var(--ink); }
.sb-aula .n { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; flex: none; }

.lesson-main { padding: 36px clamp(18px, 5vw, 64px) 80px; min-width: 0; }
.lesson-inner { max-width: var(--read); margin: 0 auto; }
.lesson-main .breadcrumb { margin-bottom: 20px; }

/* video */
.video-frame {
  position: relative; aspect-ratio: 16 / 9; width: 100%;
  border-radius: var(--radius); overflow: hidden; background: var(--ink);
  box-shadow: var(--shadow-md); margin-bottom: 30px;
}
.video-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video-empty {
  position: relative; aspect-ratio: 16 / 9; width: 100%; border-radius: var(--radius);
  display: grid; place-content: center; justify-items: center; gap: 12px; text-align: center;
  background: var(--paper-soft); border: 1px dashed var(--line); color: var(--muted); margin-bottom: 30px;
}
.video-empty .play { width: 58px; height: 58px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); display: grid; place-items: center; box-shadow: var(--shadow-sm); }
.video-empty .play svg { width: 20px; margin-left: 3px; }
.video-empty small { font-size: 12.5px; max-width: 32ch; }

/* player de slides (reveal embutido no lugar do vídeo) */
.video-frame.deck-frame { background: var(--paper-soft); margin-bottom: 12px; }
.deck-bar { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-bottom: 30px; font-size: 13.5px; }
.deck-hint { color: var(--muted); }
.deck-full, .deck-yt { color: var(--ink); font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 1px; }
.deck-full { margin-left: auto; background: none; border: 0; border-bottom: 1px solid var(--line); cursor: pointer; font: inherit; font-weight: 600; }
.deck-full:hover, .deck-yt:hover { border-color: var(--ink); }

/* lesson typography */
.lesson-inner h1 { font-size: clamp(30px, 4.6vw, 46px); line-height: 1.08; letter-spacing: -0.02em; margin: 6px 0 26px; font-weight: 700; }
.lesson-body { font-size: 18px; line-height: 1.72; color: var(--ink); }
.lesson-body p { margin: 0 0 1.25em; }
.lesson-body h3 { font-size: 22px; letter-spacing: -0.01em; margin: 1.8em 0 0.5em; }
.lesson-body strong { font-weight: 700; }
.lesson-body a { border-bottom: 1px solid var(--marker-deep); }
.lesson-body mark { background: linear-gradient(180deg, transparent 8%, var(--marker) 8% 92%, transparent 92%); color: inherit; padding: 0.05em 0.08em; border-radius: 2px; }
.lesson-body ul { padding-left: 1.2em; margin: 0 0 1.25em; }
.lesson-body li { margin: 0.3em 0; }
.lesson-body .callout {
  background: var(--paper-soft); border: 1px solid var(--line); border-left: 3px solid var(--marker-deep);
  border-radius: 12px; padding: 16px 20px; margin: 0 0 1.5em; font-size: 16px; color: var(--ink-soft);
}
.lesson-body .callout p { margin: 0; }
.lesson-body .synthesis {
  background: var(--cream); border: 1px solid #ebe0d2; border-radius: var(--radius);
  padding: 22px 24px; margin: 2em 0 0; box-shadow: var(--shadow-sm);
}
.lesson-body .synthesis .syn-label { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--marker-deep); margin-bottom: 8px; }
.lesson-body .synthesis p { margin: 0; font-size: 16px; color: var(--ink); }

/* lesson footer actions */
.lesson-done { margin: 36px 0 0; display: flex; justify-content: center; }
.toggle-done {
  display: inline-flex; align-items: center; gap: 10px; padding: 12px 22px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card); cursor: pointer; font-weight: 600; font-size: 14.5px;
  transition: background 0.2s, color 0.2s, transform 0.2s var(--ease);
}
.toggle-done:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.toggle-done.is-done { background: var(--ink); color: var(--paper); border-color: var(--ink); }

.prevnext { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 44px 0 0; }
.pn {
  display: flex; flex-direction: column; gap: 4px; padding: 18px 20px; border: 1px solid var(--line);
  border-radius: 14px; background: var(--card); box-shadow: var(--shadow-sm);
  transition: transform 0.2s var(--ease), box-shadow 0.2s, border-color 0.2s;
}
.pn:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: #ddd9cf; }
.pn.next { text-align: right; }
.pn .pn-label { font-size: 12px; color: var(--muted); }
.pn .pn-title { font-weight: 600; font-size: 15px; }
.pn.disabled { opacity: 0.4; pointer-events: none; }

/* mobile sidebar backdrop */
.sb-backdrop { display: none; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .lesson-layout { grid-template-columns: 1fr; }
  .lesson-sidebar {
    position: fixed; top: 0; left: 0; bottom: 0; width: 290px; height: 100vh; z-index: 70;
    background: var(--paper); transform: translateX(-100%); transition: transform 0.3s var(--ease);
    border-right: 1px solid var(--line); box-shadow: var(--shadow-lg); padding-top: 70px;
  }
  body.sb-open .lesson-sidebar { transform: none; }
  body.sb-open .sb-backdrop { display: block; position: fixed; inset: 0; background: rgba(28,28,26,0.3); z-index: 65; }
  .menu-toggle.show {
    display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px;
    border-radius: 10px; border: 1px solid var(--line); background: var(--card); cursor: pointer; margin-right: 4px;
  }
  .topbar nav .navlink-course { display: none; }
}
@media (max-width: 560px) {
  .prevnext { grid-template-columns: 1fr; }
  .hero h1 { font-size: 44px; }
  .lesson-body { font-size: 16.5px; }
}