/* Lecke-navigáció — chrome komponens.
 * Sticky top-bar desktopon, közös bottom-bar mobilon (≤768px).
 */

:root {
  --nav-ink: var(--ink, #1a1a1a);
  --nav-ink-soft: rgba(26, 26, 26, 0.55);
  --nav-ink-faint: rgba(26, 26, 26, 0.22);
  --nav-paper: var(--paper-bg, #FBFAF4);
  --nav-paper-dark: var(--paper-bg-dark, #F5F3EA);
  --nav-purple: #783FF3;
  --nav-purple-soft: rgba(120, 63, 243, 0.12);
  --nav-height-top: 56px;
  --nav-height-bottom: 56px;
  --nav-mono: 'DM Mono', ui-monospace, monospace;
  --nav-sans: 'Inter', 'Helvetica Neue', sans-serif;
}

#lesson-nav {
  font-family: var(--nav-sans);
  color: var(--nav-ink);
}

/* ─────────────────── KÖZÖS LINK + DOT ─────────────────── */

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--nav-ink);
  font-family: var(--nav-sans);
  transition: color 120ms ease, background-color 120ms ease, border-color 120ms ease;
}
.nav-link:hover { color: var(--nav-purple); }
.nav-link:focus-visible {
  outline: 2px solid var(--nav-purple);
  outline-offset: 3px;
  border-radius: 1px;
}
.nav-link[aria-disabled="true"] {
  color: var(--nav-ink-faint);
  pointer-events: none;
  cursor: default;
}

.nav-dots {
  display: flex;
  gap: 0.55rem;
  align-items: center;
}
.nav-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1.5px solid var(--nav-ink-faint);
  background: transparent;
  transition: border-color 120ms ease, background-color 120ms ease, transform 120ms ease;
  display: inline-block;
}
.nav-dot:hover { transform: scale(1.2); }
.nav-dot--visited {
  background: var(--nav-purple);
  border-color: var(--nav-purple);
}
.nav-dot--current {
  border-color: var(--nav-purple);
  background: var(--nav-paper);
  box-shadow: 0 0 0 2px var(--nav-paper), 0 0 0 3.5px var(--nav-purple);
}

/* ─────────────────── STICKY TOP-BAR ─────────────────── */

#lesson-nav .nav-topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height-top);
  z-index: 90;
  background: var(--nav-paper);
  border-bottom: 1px solid var(--nav-ink-faint);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1.5rem;
}

#lesson-nav .nav-zone-left,
#lesson-nav .nav-zone-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}
#lesson-nav .nav-zone-right {
  justify-content: flex-end;
}
#lesson-nav .nav-zone-center {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

#lesson-nav .nav-brand {
  font-family: var(--nav-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--nav-ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}
#lesson-nav .nav-brand em {
  font-family: 'Caveat', cursive;
  font-style: normal;
  text-transform: none;
  letter-spacing: 0;
  font-size: 15px;
  color: var(--nav-ink);
  vertical-align: -1px;
}
#lesson-nav .nav-brand-sep {
  color: var(--nav-ink-faint);
}
#lesson-nav .nav-brand-section {
  font-family: 'Caveat', cursive;
  text-transform: none;
  letter-spacing: 0.01em;
  font-size: 14px;
  color: var(--academy-accent, #783FF3);
  border: 1px solid currentColor;
  padding: 0.02em 0.45em 0.06em;
  line-height: 1;
  transform: rotate(-1deg);
}

#lesson-nav .nav-prev,
#lesson-nav .nav-next {
  font-family: var(--nav-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--nav-ink-faint);
  background: transparent;
  white-space: nowrap;
}
#lesson-nav .nav-prev:hover:not([aria-disabled="true"]),
#lesson-nav .nav-next:hover:not([aria-disabled="true"]) {
  background: var(--nav-purple-soft);
  border-color: var(--nav-purple);
  color: var(--nav-purple);
}

#lesson-nav .nav-map {
  font-family: var(--nav-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nav-ink-soft);
}
#lesson-nav .nav-map:hover { color: var(--nav-purple); }

#lesson-nav .nav-counter {
  font-family: 'Caveat', cursive;
  font-size: 1.15rem;
  color: var(--nav-ink);
  margin-left: 0.25rem;
}

/* A meglévő .course-label elrejtése + hero padding-bump */
body:has(#lesson-nav) .course-label { display: none; }
body:has(#lesson-nav) .lesson-hero {
  padding-top: calc(8rem + var(--nav-height-top) - 2rem);
}

/* ─────────── AIBP ACADEMY LOGO (topbar-méret) ─────────── */
#lesson-nav .aibp-academy-logo.nav-brand-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.22em;
  text-decoration: none;
  color: var(--nav-ink);
  line-height: 1;
}
#lesson-nav .aibp-academy-logo.nav-brand-logo .aibp {
  font-family: var(--nav-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--nav-ink);
}
#lesson-nav .aibp-academy-logo.nav-brand-logo .academy {
  font-family: 'Caveat', cursive;
  font-size: 22px;
  font-weight: 700;
  color: var(--academy-accent, var(--nav-purple));
  transform: rotate(-2deg);
  transform-origin: left center;
  letter-spacing: 0.005em;
  position: relative;
  top: 1px;
}
#lesson-nav .aibp-academy-logo.nav-brand-logo:hover .academy {
  color: var(--academy-accent-strong, #5d24d0);
}

/* ─────────────────── MOBIL BOTTOM-BAR (≤768px) ─────────────────── */

@media (max-width: 768px) {
  #lesson-nav .nav-topbar { display: none; }

  /* Bottom-bar markupot a JS injektálja .nav-bottombar div-be */
  #lesson-nav .nav-bottombar {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: var(--nav-height-bottom);
    z-index: 90;
    background: var(--nav-paper);
    border-top: 1px solid var(--nav-ink-faint);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 1rem;
    gap: 0.5rem;
  }
  #lesson-nav .nav-bottombar a {
    text-decoration: none;
    color: var(--nav-ink);
    font-family: var(--nav-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
  }
  #lesson-nav .nav-bottombar a:hover:not([aria-disabled="true"]) { color: var(--nav-purple); }
  #lesson-nav .nav-bottombar a[aria-disabled="true"] {
    color: var(--nav-ink-faint);
    pointer-events: none;
  }
  #lesson-nav .nav-bottombar .nav-bottom-prev { justify-self: start; }
  #lesson-nav .nav-bottombar .nav-bottom-next { justify-self: end; }
  #lesson-nav .nav-bottombar .nav-bottom-map {
    font-family: 'Caveat', cursive;
    font-size: 1.15rem;
    letter-spacing: 0;
    text-transform: none;
    color: var(--nav-ink);
  }

  /* Lecke-tartalom alulra hagyjon helyet */
  body:has(#lesson-nav) {
    padding-bottom: var(--nav-height-bottom);
  }
  body:has(#lesson-nav) .lesson-hero {
    padding-top: 6rem;
  }
}

@media (min-width: 769px) {
  #lesson-nav .nav-bottombar { display: none; }
}

/* ─────────────────── REDUCED MOTION ─────────────────── */

@media (prefers-reduced-motion: reduce) {
  #lesson-nav *,
  #lesson-nav *::before,
  #lesson-nav *::after {
    transition: none !important;
  }
}

/* ─────────────────── KURZUS-UGRÓ PANEL (breadcrumb-gombra nyílik) ─────────────────── */

#lesson-nav .nav-crumb {
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 0.2rem 0.35rem;
  border-radius: 4px;
  transition: background-color 120ms ease;
}
#lesson-nav .nav-crumb:hover,
#lesson-nav .nav-crumb.is-open { background: var(--nav-purple-soft); }
#lesson-nav .nav-crumb .nav-crumb-caret {
  margin-left: 0.4rem;
  font-size: 0.6rem;
  color: var(--nav-ink-soft);
  display: inline-block;
  transition: transform 150ms ease;
}
#lesson-nav .nav-crumb.is-open .nav-crumb-caret { transform: rotate(180deg); }

#lesson-nav .nav-course-panel {
  position: fixed;
  top: calc(var(--nav-height-top) + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: min(1060px, calc(100vw - 2rem));
  max-height: calc(100vh - var(--nav-height-top) - 2rem);
  overflow-y: auto;
  z-index: 240;
  background: var(--nav-paper);
  border: 1.5px solid var(--nav-ink);
  border-radius: 4px;
  box-shadow: 6px 6px 0 rgba(0,0,0,0.12);
  padding: 1.1rem 1.2rem 1.2rem;
}
#lesson-nav .ncp-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.6rem;
  margin-bottom: 0.8rem;
  border-bottom: 1.5px solid var(--nav-ink);
}
#lesson-nav .ncp-title {
  font-family: var(--nav-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--nav-ink-soft);
}
#lesson-nav .ncp-map {
  font-family: var(--nav-mono);
  font-size: 11px;
  color: var(--nav-purple);
  text-decoration: none;
  border-bottom: 1px dashed currentColor;
}
#lesson-nav .ncp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0.9rem;
}
#lesson-nav .ncp-module {
  border: 1px solid rgba(0,0,0,0.14);
  border-radius: 4px;
  padding: 0.55rem 0.55rem 0.6rem;
  background: rgba(255,255,255,0.6);
}
#lesson-nav .ncp-module.is-current {
  border: 1.5px solid var(--nav-purple);
  background: rgba(120,63,243,0.05);
}
#lesson-nav .ncp-module-head {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.15rem 0.3rem 0.45rem;
}
#lesson-nav .ncp-module-head .label {
  font-family: var(--nav-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--nav-purple);
}
#lesson-nav .ncp-module-head .title {
  font-weight: 700;
  font-size: 0.86rem;
  line-height: 1.25;
}
#lesson-nav .ncp-lesson {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  padding: 0.26rem 0.3rem;
  border-radius: 3px;
  text-decoration: none;
  color: inherit;
}
#lesson-nav a.ncp-lesson:hover { background: var(--nav-purple-soft); }
#lesson-nav .ncp-lesson .id {
  font-family: var(--nav-mono);
  font-size: 9.5px;
  color: var(--nav-ink-faint);
  white-space: nowrap;
}
#lesson-nav .ncp-lesson .t {
  font-size: 0.8rem;
  line-height: 1.3;
  color: var(--nav-ink);
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
#lesson-nav .ncp-lesson .check { font-size: 0.7rem; color: #4A9B3D; }
#lesson-nav .ncp-lesson .here {
  font-family: 'Caveat', cursive;
  font-size: 0.95rem;
  color: var(--nav-purple);
  white-space: nowrap;
  transform: rotate(-2deg);
}
#lesson-nav .ncp-lesson.is-current {
  background: rgba(240,188,78,0.28);
}
#lesson-nav .ncp-lesson.is-current .t { font-weight: 700; white-space: normal; }
#lesson-nav .ncp-lesson.is-todo { opacity: 0.45; cursor: default; }
#lesson-nav .ncp-lesson .soon {
  font-family: var(--nav-mono);
  font-size: 8.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--nav-ink-faint);
}

@media (max-width: 768px) {
  /* Mobilon a topbar rejtve van, a panel a bottom-bar térképére marad */
  #lesson-nav .nav-course-panel { display: none; }
}

/* ─────────── FÓKUSZ (billentyűzet), 2026-09-23 ───────────
   A lecke-navigáció minden kattintható eleme (topbar, logó, tovább-gomb,
   lecke-térkép panel, mobil alsó sáv) látható fókuszt kap: 2,5 px lila, 3 px. */
#lesson-nav a:focus-visible,
#lesson-nav button:focus-visible,
#lesson-nav [role="button"]:focus-visible,
.nav-link:focus-visible,
.nav-dot:focus-visible {
  outline: 2.5px solid var(--nav-purple, #783FF3);
  outline-offset: 3px;
  border-radius: 2px;
}
#lesson-nav .nav-course-panel a:focus-visible { outline-offset: -3px; }