/* ============================================================================
   LAYOUT 2 — "Console"  (documentation / LMS style)
   Navigation model: ONE PERSISTENT TREE.
     • Left rail shows the ENTIRE course (modules → lessons), always visible,
       collapsible per module (native <details>).
     • Right rail is an in-lesson table of contents (anchor scrollspy).
     • Thin top bar with a global progress ring.
   Best for: large, reference-heavy courses where any lesson should be 1 click
   away and learners jump around non-linearly.
   ============================================================================ */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 clamp(1rem, 3vw, 2rem);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
/* full-width course-progress bar pinned to the bottom edge of the header */
.topbar-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--bg-sunken);
  overflow: hidden;
  z-index: 1;
}
.topbar-progress .progress-fill {
  height: 100%;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: 1.05rem;
  letter-spacing: var(--tracking-display);
  color: var(--ink);
}
.brand .mark {
  width: 22px;
  height: 22px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 13px;
  flex: none;
}
.brand .accent {
  color: var(--accent);
}
.topbar-tools {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
}

/* progress ring */
.ring {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}
.ring svg {
  transform: rotate(-90deg);
}
.ring .track {
  stroke: var(--bg-sunken);
}
.ring .fill {
  stroke: var(--accent);
  stroke-linecap: round;
  transition: stroke-dasharray var(--dur-slow) var(--ease);
}
.ring .pct {
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--ink-muted);
}

/* ---- shell --------------------------------------------------------------- */
.console-shell {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr) 16rem;
  align-items: start;
  max-width: 1440px;
  margin: 0 auto;
}

/* ---- left rail: course tree ---------------------------------------------- */
.rail {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 1.6rem 1rem 2rem 1.5rem;
  border-right: 1px solid var(--border);
}
.rail-head {
  padding: 0 0.4rem 1.1rem;
}
.rail-course {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-h3);
  letter-spacing: var(--tracking-display);
  color: var(--ink);
}
.rail-meta {
  margin-top: 0.25rem;
  font-size: var(--fs-small);
  color: var(--ink-subtle);
}

.module {
  border-top: 1px solid var(--border);
}
.module > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.85rem 0.4rem;
  font-size: var(--fs-label);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--ink-muted);
}
.module > summary::-webkit-details-marker {
  display: none;
}
.module > summary:hover {
  color: var(--ink);
}
.module .chev {
  transition: transform var(--dur) var(--ease);
  color: var(--ink-subtle);
  flex: none;
}
.module[open] > summary .chev {
  transform: rotate(90deg);
}
.module .count {
  margin-left: auto;
  font-variant-numeric: tabular-nums;
  color: var(--ink-subtle);
}

.lesson-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.6rem 0.5rem 0.55rem;
  margin-left: 0.4rem;
  border-left: 2px solid var(--border);
  color: var(--ink-muted);
  font-size: var(--fs-small);
  cursor: pointer;
  transition: all var(--dur) var(--ease);
}
.lesson-link:hover {
  color: var(--ink);
  border-left-color: var(--border-strong);
}
.lesson-link .tick {
  width: 15px;
  height: 15px;
  flex: none;
  border-radius: 99px;
  border: 1.5px solid var(--border-strong);
}
.lesson-link.is-active {
  color: var(--ink);
  border-left-color: var(--accent);
  background: var(--accent-soft);
  font-weight: var(--fw-semi);
}
.lesson-link.is-active .tick {
  border-color: var(--accent);
  background: var(--accent);
}

/* ---- main ---------------------------------------------------------------- */
.console-main {
  min-width: 0;
  padding: 2.4rem clamp(1.2rem, 4vw, 3.5rem) 5rem;
}
.console-main .breadcrumb {
  display: flex;
  gap: 0.5ch;
  align-items: center;
  margin-bottom: 1rem;
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--ink-subtle);
}
.console-main .breadcrumb .accent {
  color: var(--accent);
}
.console-main .lesson-title {
  margin-bottom: 0.6rem;
}
.console-main .prose {
  margin-top: 1.6rem;
}
.console-main .prose h2 {
  scroll-margin-top: calc(var(--topbar-h) + 1.5rem);
}

/* ---- right TOC ----------------------------------------------------------- */
.toc {
  position: sticky;
  top: var(--topbar-h);
  height: calc(100vh - var(--topbar-h));
  padding: 2.4rem 1.5rem 2rem 0;
  overflow-y: auto;
}
.toc .label {
  display: block;
  margin-bottom: 0.9rem;
}
.toc a {
  display: block;
  padding: 0.35rem 0 0.35rem 0.8rem;
  border-left: 2px solid var(--border);
  font-size: var(--fs-small);
  color: var(--ink-subtle);
  transition: all var(--dur) var(--ease);
}
.toc a:hover {
  color: var(--ink);
}
.toc a.is-active {
  color: var(--ink);
  border-left-color: var(--accent);
  font-weight: var(--fw-medium);
}

/* in-lesson prev/next */
.lesson-foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  max-width: var(--measure);
}

/* ---- mobile -------------------------------------------------------------- */
.nav-toggle,
.nav-backdrop {
  display: none;
}
@media (max-width: 1100px) {
  .console-shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
  }
  .toc {
    display: none;
  }
}
@media (max-width: 820px) {
  .nav-toggle {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    color: var(--ink);
    cursor: pointer;
  }
  .console-shell {
    grid-template-columns: minmax(0, 1fr);
  }
  .rail {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 60;
    width: min(86vw, 340px);
    height: 100vh;
    padding-top: calc(var(--topbar-h) + 1rem);
    background: var(--bg-elevated);
    transform: translateX(-102%);
    transition: transform var(--dur) var(--ease);
  }
  /* CSS-only drawer: works without JS via the #cb-nav checkbox */
  #cb-nav:checked ~ .console-shell .rail {
    transform: none;
  }
  #cb-nav:checked ~ .console-shell .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 55;
    background: var(--overlay);
  }
}
@media (min-width: 821px) {
  .nav-toggle {
    display: none;
  }
}


/* ---- hybrid: phase-nav pill row reused inside console's slim topbar ---- */
.topbar { flex-wrap: nowrap; gap: .75rem; }
.brand img.brand-icon { width: 22px; height: 22px; object-fit: contain; flex: none; }
.phase-nav {
  display: inline-flex;
  gap: 2px;
  padding: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  overflow-x: auto;
  max-width: 56vw;
}
.phase-nav a, .phase-nav .is-disabled {
  padding: 0.42em 1em;
  border-radius: var(--radius-pill);
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--ink-subtle);
  white-space: nowrap;
  transition: all var(--dur) var(--ease);
}
.phase-nav a:hover { color: var(--ink); }
.phase-nav a[aria-current="true"] { background: var(--ink); color: var(--ink-inverse); }
.phase-nav .is-disabled { opacity: .4; cursor: default; }
.phase-nav .sep { width: 1px; margin: 0 2px; background: var(--border); align-self: stretch; }

@media (max-width: 980px) {
  .phase-nav { display: none; }
}

/* ---- rail: placeholder ("em breve") aula groups + templates group ---- */
.module.is-disabled > summary { color: var(--ink-subtle); opacity: .55; cursor: default; }
.module.is-disabled .count { font-size: var(--fs-small); text-transform: none; letter-spacing: 0; }

/* ---- interactive checklist ---- */
.prose ul.checklist { list-style: none; padding-left: 0; display: flex; flex-direction: column; gap: .6rem; }
.prose ul.checklist li { padding-left: 0; }
.prose ul.checklist li::before { content: none; }
ul.checklist .check-item label {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .7rem .9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
ul.checklist .check-item label:hover { border-color: var(--border-strong); }
ul.checklist .check-item input[type="checkbox"] {
  margin-top: .2rem;
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--accent);
  flex: none;
}
ul.checklist .check-item input:checked ~ span {
  color: var(--ink-subtle);
  text-decoration: line-through;
}

/* ---- callouts (distinct from plain script/template blockquotes) ---- */
.prose .callout {
  margin: 1.1rem 0;
  padding: .9rem 1.1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
  gap: .3rem;
}
.prose .callout p { margin: 0; }
.prose .callout .callout-label {
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
}
.prose .callout-insight { background: rgba(56, 189, 248, 0.1); border-color: rgba(56, 189, 248, 0.3); }
.prose .callout-insight .callout-label { color: var(--info); }
.prose .callout-warning { background: rgba(251, 191, 36, 0.1); border-color: rgba(251, 191, 36, 0.3); }
.prose .callout-warning .callout-label { color: var(--bonus); }
.prose .callout-rule { background: rgba(52, 211, 153, 0.1); border-color: rgba(52, 211, 153, 0.3); }
.prose .callout-rule .callout-label { color: var(--success); }

/* ---- home: Netflix-style horizontal rows ---- */
.rows { max-width: 84rem; margin: 0 auto; padding: 0 clamp(1.2rem, 4vw, 2.5rem) 5rem; }
.row { margin-top: 1.6rem; }
.row-title {
  font-family: var(--font-display);
  font-weight: var(--fw-semi);
  font-size: 1.15rem;
  color: var(--ink);
  margin-bottom: .9rem;
  padding-left: .1rem;
}
.card-row {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: .6rem;
  scroll-snap-type: x proximity;
}
.card-row::-webkit-scrollbar { height: 6px; }
.card-row::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 99px; }
.media-card {
  flex: 0 0 clamp(200px, 26vw, 260px);
  scroll-snap-align: start;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface-card);
  border: 1px solid var(--border);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  display: block;
}
a.media-card:hover { transform: translateY(-4px) scale(1.02); border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.media-card-art {
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: linear-gradient(155deg, var(--art-a, var(--accent)) 0%, var(--art-b, var(--bg-sunken)) 130%);
  overflow: hidden;
}
.media-card-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0,0,0,.55) 0%, rgba(0,0,0,0) 55%);
}
.media-card-num {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: var(--fw-display);
  font-size: 2.6rem;
  color: rgba(14, 15, 18, 0.35);
  line-height: 1;
}
.media-card-icon {
  position: relative;
  z-index: 1;
  font-size: 2.2rem;
  color: rgba(14, 15, 18, 0.45);
}
.media-card-body { padding: .85rem .95rem 1rem; }
.media-card-title {
  font-weight: var(--fw-semi);
  color: var(--ink);
  font-size: .95rem;
  margin: 0 0 .2rem;
}
.media-card-sub {
  font-size: var(--fs-small);
  color: var(--ink-subtle);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.media-card.is-placeholder { opacity: .5; cursor: default; }
.media-card.is-placeholder .media-card-art { background: var(--bg-sunken); }
.media-card.is-placeholder .media-card-num { color: var(--ink-subtle); }

/* ---- cover hero with logo ---- */
.cover-logo { max-width: min(240px, 55vw); height: auto; margin: 0 auto; display: block; }

/* ---- templates page reuses console-main; no extra rules needed ---- */