/* Sidebar do curso: usa os tokens e componentes já definidos nos estilos das aulas. */
.lesson-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 300px);
  align-items: start;
  gap: clamp(24px, 3vw, 44px);
  width: min(100%, 1680px);
  max-width: none;
  margin: 0 auto;
  padding: 20px clamp(24px, 4.5vw, 72px) 70px;
}
.lesson-layout > .lesson-content {
  width: auto;
  min-width: 0;
  max-width: none;
  margin: 0;
  padding: 10px 0 0;
}
.course-sidebar {
  position: sticky;
  top: 24px;
  min-width: 0;
  max-height: calc(100vh - 36px);
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--p);
  scrollbar-color: var(--line) transparent;
}
.course-sidebar summary { list-style: none; cursor: pointer; }
.course-sidebar summary::-webkit-details-marker { display: none; }
.sidebar-header { padding: 17px 17px 13px; border-bottom: 1px solid var(--line); }
.sidebar-home { display: inline-flex; align-items: center; min-height: 44px; color: var(--r); font-size: .9rem; font-weight: 800; text-decoration: none; }
.sidebar-home:hover { text-decoration: underline; text-underline-offset: 4px; }
.sidebar-heading { margin: 5px 0 0; font: inherit; font-size: 1.08rem; line-height: 1.35; font-weight: 800; }
.sidebar-progress { margin: 13px 12px; padding: 13px; border: 1px solid var(--line); border-radius: 11px; background: var(--bg); }
.sidebar-progress-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.sidebar-progress h3 { margin: 0; font: inherit; font-size: .92rem; line-height: 1.35; font-weight: 800; }
.sidebar-percent { color: var(--g); font-size: 1.2rem; font-weight: 850; }
.sidebar-progress p { margin: 2px 0 9px; color: var(--m); font-size: .82rem; line-height: 1.5; }
.sidebar-progress progress { display: block; width: 100%; height: 6px; border: 0; border-radius: 99px; background: var(--line); accent-color: var(--g); }
.sidebar-progress progress::-webkit-progress-bar { border-radius: 99px; background: var(--line); }
.sidebar-progress progress::-webkit-progress-value { border-radius: 99px; background: var(--g); }
.sidebar-progress progress::-moz-progress-bar { border-radius: 99px; background: var(--g); }
.sidebar-module { margin: 0 10px 12px; border: 1px solid var(--line); border-radius: 11px; overflow: hidden; }
.sidebar-module > summary { display: flex; align-items: center; gap: 10px; min-height: 62px; padding: 10px 12px; color: var(--t); font-size: .88rem; font-weight: 750; }
.sidebar-module > summary::after { content: "›"; margin-left: auto; color: var(--m); font-size: 1.15rem; transform: rotate(0); transition: transform .15s; }
.sidebar-module[open] > summary::after { transform: rotate(90deg); }
.sidebar-module > summary:hover { background: var(--p2); }
.sidebar-module > summary:focus-visible, .sidebar-home:focus-visible, .sidebar-lesson-link:focus-visible { outline: 2px solid var(--b); outline-offset: 2px; }
.module-number, .lesson-number { display: grid; flex: none; place-items: center; width: 30px; height: 30px; border-radius: 9px; background: #211316; color: var(--r); font-weight: 850; }
.module-label { min-width: 0; }
.module-label small, .sidebar-lesson-link small { display: block; margin-top: 2px; color: var(--m); font-size: .77rem; font-weight: 500; line-height: 1.4; }
.sidebar-lessons { border-top: 1px solid var(--line); padding: 5px; }
.sidebar-lesson { display: grid; grid-template-columns: minmax(0, 1fr) 44px; align-items: center; gap: 4px; border-radius: 8px; }
.sidebar-lesson + .sidebar-lesson { margin-top: 3px; }
.sidebar-lesson.is-current { background: #1e1215; }
.sidebar-lesson-link { display: flex; align-items: center; gap: 9px; min-width: 0; min-height: 54px; padding: 7px 6px; border-radius: 8px; color: var(--m); font-size: .84rem; line-height: 1.45; text-decoration: none; }
.sidebar-lesson-link:hover { color: var(--t); background: var(--p2); }
.sidebar-lesson-link[aria-current="page"] { color: var(--r); font-weight: 750; }
.lesson-number { width: 25px; height: 25px; border-radius: 50%; background: var(--p2); color: var(--m); font-size: .72rem; }
.sidebar-lesson-link[aria-current="page"] .lesson-number { background: #211316; color: var(--r); }
.sidebar-lesson-name { min-width: 0; overflow-wrap: anywhere; }
.sidebar-current-label[hidden] { display: none; }
.sidebar-topics-heading { margin: 4px 12px 2px 45px; color: var(--m); font-size: .68rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.sidebar-topics { display: grid; gap: 2px; list-style: none; margin: 0 8px 8px 32px; padding: 3px 0 4px 10px; border-left: 1px solid var(--line); }
.sidebar-topics a { display: block; min-height: 44px; padding: 5px 8px; border-radius: 7px; color: var(--m); font-size: .8rem; line-height: 1.4; text-decoration: none; }
.sidebar-topics a:hover { color: var(--t); background: var(--p2); }
.sidebar-topics a.is-current { background: var(--p2); color: var(--b); font-weight: 750; }
.sidebar-topics a:focus-visible { outline: 2px solid var(--b); outline-offset: 2px; }
@media (max-width: 900px) {
  .lesson-layout { grid-template-columns: 1fr; gap: 4px; padding-top: 12px; }
  .course-sidebar { position: static; max-height: none; overflow: visible; margin-top: 24px; }
  .sidebar-module { margin-bottom: 10px; }
  .lesson-layout > .lesson-content { padding-top: 24px; }
}
@media (max-width: 620px) {
  .lesson-layout { gap: 0; padding: 12px 14px 50px; }
  .sidebar-header { padding: 8px 12px; }
  .sidebar-home { min-height: 44px; }
  .sidebar-heading { margin-top: 0; }
  .course-sidebar { margin-top: 20px; }
  .sidebar-progress { margin: 9px 10px; padding: 10px 12px; }
  .sidebar-module { margin: 0 8px 9px; }
  .lesson-layout > .lesson-content { padding-top: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .sidebar-module > summary::after { transition: none; }
}
/* Cabeçalho, trilha da aula e rodapé compartilhados pelas páginas de aula. */
.course-site-header, .course-context-bar, .course-site-footer { width: 100%; background: var(--bg); font-family: inherit; }
.course-sidebar { font-family: inherit; }
.course-site-header { border-top: 3px solid var(--r); border-bottom: 1px solid var(--line); }
.course-site-header-inner, .course-context-inner, .course-site-footer-inner { width: min(100%, 1680px); margin: 0 auto; padding-left: clamp(24px, 4.5vw, 72px); padding-right: clamp(24px, 4.5vw, 72px); }
.course-site-header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 66px; }
.course-site-brand { display: flex; align-self: stretch; align-items: center; min-height: 44px; color: var(--t); font: inherit; font-size: 1.05rem; line-height: 1.25; font-weight: 850; letter-spacing: .02em; text-decoration: none; }
.course-site-brand span { color: var(--r); }
.course-site-meta { display: flex; align-items: center; gap: 12px; color: var(--m); font-size: .86rem; }
.course-site-pill { display: inline-flex; align-items: center; min-height: 32px; padding: 3px 11px; border: 1px solid var(--line); border-radius: 999px; color: var(--g); font-weight: 700; }
.course-context-bar { border-bottom: 1px solid var(--line); background: var(--p); }
.course-context-inner { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: clamp(12px, 2vw, 25px); min-height: 66px; }
.course-back { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 44px; padding: 0 13px; border: 1px solid var(--line); border-radius: 9px; color: var(--t); font-size: .86rem; font-weight: 700; text-decoration: none; white-space: nowrap; }
.course-back:hover, .course-page-link:not(.is-disabled):hover { border-color: var(--r); color: var(--r); }
.course-context-title { display: flex; align-items: center; gap: 10px; min-width: 0; color: var(--m); font-size: .86rem; }
.course-context-title strong { overflow: hidden; color: var(--t); font-size: .87rem; text-overflow: ellipsis; white-space: nowrap; }
.course-context-separator { color: var(--r); font-size: 1.1rem; }
.course-page-nav { display: flex; align-items: center; gap: 8px; }
.course-page-link { display: inline-flex; align-items: center; justify-content: space-between; gap: 10px; min-width: 142px; min-height: 44px; padding: 5px 10px; border: 1px solid var(--line); border-radius: 9px; color: var(--t); text-decoration: none; }
.course-page-link small, .course-page-link strong { display: block; line-height: 1.3; }
.course-page-link small { color: var(--m); font-size: .74rem; }
.course-page-link strong { font-size: .8rem; }
.course-page-link.is-disabled { opacity: .48; }
.course-page-link:focus-visible, .course-back:focus-visible, .course-site-brand:focus-visible { outline: 2px solid var(--b); outline-offset: 3px; }
.course-site-footer { border-top: 1px solid var(--line); }
.course-site-footer-inner { padding-top: 25px; padding-bottom: 18px; }
.course-site-footer-main { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-bottom: 18px; }
.course-site-footer-main p { margin: 0; color: var(--m); font-size: .86rem; }
.course-site-footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 14px; border-top: 1px dashed var(--line); color: var(--m); font-size: .8rem; }
@media (max-width: 1100px) {
  .course-context-inner { grid-template-columns: auto minmax(0, 1fr); padding-top: 9px; padding-bottom: 9px; }
  .course-page-nav { grid-column: 1 / -1; justify-content: flex-end; }
}
@media (max-width: 620px) {
  .course-site-header-inner, .course-context-inner, .course-site-footer-inner { padding-left: 14px; padding-right: 14px; }
  .course-site-header-inner { min-height: 58px; }
  .course-site-meta > span:first-child { display: none; }
  .course-context-inner { grid-template-columns: 1fr; gap: 7px; }
  .course-back { justify-self: start; }
  .course-context-title { flex-wrap: wrap; padding: 2px 0; }
  .course-context-title strong { white-space: normal; }
  .course-page-nav { grid-column: auto; justify-content: stretch; }
  .course-page-link { flex: 1; min-width: 0; }
  .course-page-link strong { font-size: .76rem; }
  .course-site-footer-main, .course-site-footer-bottom { align-items: flex-start; flex-direction: column; gap: 6px; }
  .course-site-footer-inner { padding-top: 19px; padding-bottom: 15px; }
}


/* Harmonização tipográfica e alinhamento com o conteúdo das aulas. */
.course-sidebar, .course-site-header, .course-context-bar, .course-site-footer { font-family: inherit; }
.course-sidebar { margin-top: 32px; }
.sidebar-home { font-size: .95rem; }
.sidebar-heading { font-size: 1.12rem; }
.sidebar-progress h3 { font-size: .98rem; }
.sidebar-progress p { font-size: .86rem; line-height: 1.5; }
.sidebar-module > summary { font-size: .94rem; }
.module-label small, .sidebar-lesson-link small { font-size: .82rem; line-height: 1.45; }
.sidebar-lesson-link { font-size: .9rem; line-height: 1.45; }
.course-site-brand { font-size: 1.1rem; }
.course-site-meta, .course-back, .course-context-title { font-size: .9rem; }
.course-context-title strong { font-size: .94rem; }
.course-page-link small { font-size: .78rem; }
.course-page-link strong { font-size: .86rem; }
.course-site-footer-main p { font-size: .9rem; }
.course-site-footer-bottom { font-size: .84rem; }
@media (max-width: 900px) {
  .course-sidebar { margin-top: 22px; }
}
@media (max-width: 620px) {
  .course-sidebar { margin-top: 18px; }
}

/* Redes e créditos fornecidos para o rodapé Alleart. */
.course-site-socials { display: flex; justify-content: flex-end; align-items: center; gap: 14px; padding: 0 0 18px; border-bottom: 1px dashed var(--line); }
.course-site-socials a { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 8px; color: var(--m); }
.course-site-socials a:hover { color: var(--r); background: var(--p2); }
.course-site-socials a:focus-visible, .course-site-footer-bottom a:focus-visible { outline: 2px solid var(--b); outline-offset: 3px; }
.course-site-socials svg { width: 20px; height: 20px; fill: currentColor; }
.course-site-socials a:nth-child(2) svg { fill: none; stroke: currentColor; stroke-width: 2; }
.course-site-socials .icon-dot { fill: currentColor; stroke: none; }
.course-site-footer-bottom { border-top: 0; padding-top: 15px; font-size: .88rem; }
.course-site-footer-bottom p { margin: 0; }
.course-site-footer-bottom a { color: var(--t); text-decoration: none; }
.course-site-footer-bottom a:hover { color: var(--r); text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 620px) {
  .course-site-socials { justify-content: flex-start; }
  .course-site-footer-bottom { align-items: flex-start; }
}

/* Movimentos discretos compartilhados com as páginas do curso de Linux Mint. */
html { scroll-behavior: smooth; }
.card, .flowitem, .quizbox {
  transition: transform .22s ease, border-color .22s ease, background-color .22s ease, box-shadow .22s ease;
}
.card:hover, .flowitem:hover {
  transform: translateY(-3px);
  border-color: var(--b);
  box-shadow: 0 10px 24px #0003;
}
.card:focus-within, .step:focus-within, .flowitem:focus-within {
  border-color: var(--b);
  box-shadow: 0 0 0 2px #78a5ff24;
}
.answer, .btn, .toc a, .course-back, .course-page-link, .sidebar-module > summary,
.sidebar-lesson-link, .sidebar-topics a, .course-site-socials a, .lesson-watched, .lesson-star,
.image-zoom-trigger, .image-zoom-close, .image-zoom-arrow, .image-zoom-control,
.navlinks a, .nav-status, .button {
  transition: color .18s ease, background-color .18s ease, border-color .18s ease,
    box-shadow .18s ease, opacity .18s ease;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .flowitem, .quizbox, .answer, .btn, .toc a, .course-back,
  .course-page-link, .sidebar-module > summary, .sidebar-lesson-link, .sidebar-topics a,
  .course-site-socials a, .lesson-watched, .lesson-star, .image-zoom-trigger,
  .image-zoom-close, .image-zoom-arrow, .image-zoom-control, .navlinks a,
  .nav-status, .button { transition: none !important; }
  .card:hover, .flowitem:hover { transform: none; }
}

/* Coluna de progresso e avaliação da aula atual. */
.course-sidebar-column { position: sticky; top: 24px; align-self: start; min-width: 0; margin-top: 32px; }
.course-sidebar-column .course-sidebar { position: static; top: auto; margin-top: 0; }
.sidebar-lesson-link.is-release-locked, .course-page-link.is-release-locked { cursor: not-allowed; opacity: .62; flex-wrap: wrap; }
.sidebar-lesson-link.is-release-locked .lesson-release-status, .course-page-link.is-release-locked .lesson-release-status { color: var(--y); font-size: .72rem; line-height: 1.35; }
.lesson-release-lock { margin-top: 24px; }
.sidebar-lesson { grid-template-columns: minmax(0, 1fr); }
.lesson-feedback { margin-top: 14px; padding: 17px 16px 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); text-align: center; }
.lesson-watched { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; width: 100%; padding: 7px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--p); color: var(--t); font: inherit; font-weight: 750; cursor: pointer; }
.lesson-watched:hover { border-color: var(--g); }
.lesson-watched.is-complete { border-color: var(--g); color: var(--g); }
.lesson-watched:focus-visible, .lesson-star:focus-visible { outline: 2px solid var(--b); outline-offset: 3px; }
.watched-check { display: grid; place-items: center; width: 19px; height: 19px; border: 1.5px solid currentColor; border-radius: 50%; font-size: .78rem; line-height: 1; }
.lesson-watched:not(.is-complete) .watched-check { color: var(--m); font-size: 0; }
.lesson-rating p { margin: 14px 0 5px; color: var(--m); font-size: .88rem; }
.lesson-stars { display: flex; align-items: center; justify-content: center; gap: 3px; }
.lesson-star { display: grid; place-items: center; width: 29px; height: 30px; padding: 0; border: 0; border-radius: 5px; background: transparent; color: var(--m); font: inherit; font-size: 1.42rem; line-height: 1; cursor: pointer; }
.lesson-star:hover, .lesson-star.is-selected { color: var(--y); }
.rating-status { display: block; min-height: 1.2em; margin-top: 2px; color: var(--m); font-size: .72rem; }
@media (max-width: 900px) {
  .course-sidebar-column { position: static; margin-top: 22px; }
}
@media (max-width: 620px) {
  .course-sidebar-column { margin-top: 18px; }
  .lesson-feedback { padding: 14px 13px 11px; }
}
@media (min-width: 901px) {
  .course-sidebar-column .course-sidebar { max-height: calc(100vh - 48px); overflow-y: auto; }
}


.lesson-image-zoom{display:block;overflow:hidden;border-radius:8px;cursor:default}.lesson-image-zoom:focus-visible{outline:2px solid var(--b);outline-offset:3px}
.image-zoom-trigger{display:none;align-items:center;justify-content:center;min-height:44px;margin:8px 0 0;padding:7px 12px;border:1px solid var(--line);border-radius:9px;background:var(--p2);color:var(--b);font:inherit;font-size:.82rem;font-weight:750;cursor:pointer}.image-zoom-trigger:hover{border-color:var(--b);color:var(--t)}.image-zoom-trigger:focus-visible{outline:2px solid var(--b);outline-offset:2px}
.image-zoom-dialog{width:min(96vw,1500px);max-width:none;max-height:94dvh;padding:0;overflow:hidden;border:1px solid var(--line);border-radius:16px;background:var(--p);color:var(--t)}.image-zoom-dialog::backdrop{background:#03060bdc}.image-zoom-panel{position:relative;display:grid;justify-items:center;gap:8px;max-height:94dvh;padding:clamp(12px,2.5vw,28px)}.image-zoom-title{max-width:calc(100% - 120px);margin:0 0 2px;font:700 1rem/1.35 Inter,system-ui,sans-serif;text-align:center}.image-zoom-stage{display:grid;grid-template-columns:52px minmax(0,1fr) 52px;align-items:center;gap:10px;width:100%}.image-zoom-viewport{width:100%;height:min(62dvh,620px);min-height:180px;overflow:auto;border-radius:8px;background:#050508;overscroll-behavior:contain;-webkit-overflow-scrolling:touch}.image-zoom-canvas{display:grid;place-items:center;min-width:100%;min-height:100%;margin:0 auto}.image-zoom-viewport img{display:block;max-width:none;max-height:none;width:auto;height:auto;object-fit:contain;border-radius:8px}.image-zoom-controls{display:flex;align-items:center;justify-content:center;gap:8px}.image-zoom-control{display:inline-flex;align-items:center;justify-content:center;min-width:48px;min-height:44px;padding:6px 12px;border:1px solid var(--line);border-radius:9px;background:var(--p2);color:var(--t);font:inherit;font-size:1rem;font-weight:750;cursor:pointer}.image-zoom-control:hover:not(:disabled),.image-zoom-arrow:hover:not(:disabled){border-color:var(--b);color:var(--b)}.image-zoom-control:focus-visible,.image-zoom-arrow:focus-visible,.image-zoom-close:focus-visible{outline:2px solid var(--b);outline-offset:3px}.image-zoom-control:disabled,.image-zoom-arrow:disabled{opacity:.45;cursor:not-allowed}.image-zoom-fit{min-width:126px;font-size:.82rem}.image-zoom-panel p{margin:10px 0 0;color:var(--m);font-size:.88rem;text-align:center}.image-zoom-status{margin-top:4px;color:var(--m);font-size:.76rem}.image-zoom-arrow{display:grid;place-items:center;width:48px;height:58px;border:1px solid var(--line);border-radius:12px;background:var(--p2);color:var(--b);font:inherit;font-size:2.2rem;line-height:1;cursor:pointer}.image-zoom-close{position:absolute;z-index:1;top:10px;right:10px;display:inline-flex;align-items:center;gap:7px;min-height:44px;padding:7px 12px;border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--t);font:inherit;font-size:.85rem;font-weight:750;cursor:pointer}.image-zoom-dialog[open]{margin:auto}
@media(max-width:620px){.image-zoom-trigger{display:inline-flex}.lesson-image-zoom{cursor:zoom-in}.image-zoom-dialog{width:calc(100vw - 16px);max-height:96dvh;border-radius:12px}.image-zoom-panel{max-height:96dvh;padding:10px}.image-zoom-stage{grid-template-columns:40px minmax(0,1fr) 40px;gap:5px}.image-zoom-arrow{width:38px;height:48px;font-size:1.8rem}.image-zoom-viewport{height:55dvh;min-height:170px}.image-zoom-controls{gap:6px}.image-zoom-control{min-width:44px;padding:6px 10px}.image-zoom-fit{min-width:118px}.image-zoom-panel p{font-size:.82rem}}
@media(prefers-reduced-motion:reduce){.image-zoom-dialog[open]{animation:none}}