:root {
  --papel: #f3efe6;
  --superficie: #fcfaf6;
  --tinta: #141a16;
  --tinta-suave: #5c645e;
  --floresta: #0f4d32;
  --folha: #1b7a4a;
  --marca: #c8102e;
  --linha: #d9d2c5;
  --linha-forte: #c4bba8;
  --aviso: #8a5a12;
  --aviso-fundo: #f7ecd4;
  --erro: #9b1c2c;
  --erro-fundo: #f8e6e7;
  --ok-fundo: #e4f0e8;
  --fonte-display: "Fraunces", "Iowan Old Style", "Palatino Linotype", serif;
  --fonte-ui: "Source Sans 3", "Source Sans Pro", "Segoe UI", sans-serif;
  --fonte-mono: "IBM Plex Mono", ui-monospace, monospace;
  --medida: 68ch;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --cabeca: 4rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --raio: 0.85rem;
  --raio-sm: 0.4rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: var(--fonte-ui);
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--tinta);
  background: var(--papel);
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 300;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

a {
  color: var(--floresta);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--folha);
}

:focus-visible {
  outline: 3px solid var(--folha);
  outline-offset: 3px;
}

img {
  max-width: 100%;
  height: auto;
}

.pular {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  z-index: 80;
  background: var(--tinta);
  color: var(--superficie);
  padding: 0.5rem 0.85rem;
  border-radius: var(--raio-sm);
}

.pular:focus {
  top: 0.75rem;
  color: var(--superficie);
}

.progresso {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 90;
  height: 2px;
  width: 100%;
  background: var(--floresta);
  transform: scaleX(0);
  transform-origin: left;
  opacity: 0;
  pointer-events: none;
}

.htmx-request .progresso,
.progresso.htmx-request {
  opacity: 1;
  animation: progresso 0.8s var(--ease) infinite;
}

@keyframes progresso {
  0% {
    transform: scaleX(0.08);
  }
  50% {
    transform: scaleX(0.65);
  }
  100% {
    transform: scaleX(0.08);
  }
}

.cabecalho {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--papel) 86%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--linha);
}

.cabecalho__interno {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.85rem var(--gutter);
  min-height: var(--cabeca);
}

.marca {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  color: var(--tinta);
  text-decoration: none;
  min-width: 0;
}

.marca:hover {
  color: var(--tinta);
  text-decoration: none;
}

.marca__sinal {
  width: 2px;
  height: 1.35rem;
  background: var(--marca);
  flex-shrink: 0;
  transform: translateY(0.15rem);
}

.marca__nome {
  font-family: var(--fonte-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-wrap: balance;
}

.marca__tag {
  display: none;
  margin: 0.15rem 0 0;
  font-size: 0.78rem;
  color: var(--tinta-suave);
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--linha-forte);
  border-radius: var(--raio-sm);
  background: var(--superficie);
  color: var(--tinta);
  cursor: pointer;
}

.menu-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

.nav {
  display: none;
}

.nav a {
  text-decoration: none;
}

.nav__link {
  color: var(--tinta);
  font-weight: 500;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.nav__link:hover,
.nav__link.is-ativo {
  color: var(--floresta);
  border-bottom-color: var(--floresta);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--floresta);
  color: var(--superficie) !important;
  border-bottom: 0 !important;
  font-weight: 600;
}

.nav__cta-icon {
  display: none;
}

.nav__cta:hover {
  background: var(--folha);
}

.nav-materiais {
  position: relative;
}

.nav-materiais summary {
  list-style: none;
  cursor: pointer;
  font-weight: 500;
  color: var(--tinta);
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
}

.nav-materiais summary::-webkit-details-marker {
  display: none;
}

.nav-materiais[open] summary,
.nav-materiais summary:hover {
  color: var(--floresta);
}

.nav-materiais__lista {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  margin-top: 0.5rem;
}

.nav-materiais__lista a {
  color: var(--tinta-suave);
  font-size: 0.95rem;
  padding: 0.35rem 0;
  text-decoration: none;
}

.nav-materiais__lista a:hover {
  color: var(--floresta);
}

.nav__aluno {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--tinta);
  color: var(--papel);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.nav__sair {
  color: var(--tinta-suave);
  font-size: 0.9rem;
  text-decoration: none;
}

.nav__sair:hover {
  color: var(--erro);
}

.palco {
  max-width: 1120px;
  margin: 0 auto;
  padding: 2rem var(--gutter) 4.5rem;
  min-height: calc(100dvh - 8rem);
}

.palco:focus {
  outline: none;
}

.hero {
  display: grid;
  gap: 1.25rem;
  padding: 1.5rem 0 2.5rem;
  border-bottom: 1px solid var(--linha);
  margin-bottom: 2.5rem;
}

.hero__kicker {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tinta-suave);
  font-weight: 600;
}

.hero__titulo {
  margin: 0;
  font-family: var(--fonte-display);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.03em;
  text-wrap: balance;
  max-width: 14ch;
}

.hero__lead {
  margin: 0;
  max-width: 42rem;
  font-size: 1.15rem;
  color: var(--tinta-suave);
  text-wrap: pretty;
}

.hero__acoes {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.erro {
  max-width: 40rem;
}

.erro .hero {
  border-bottom: 0;
  margin-bottom: 0;
  padding: 1rem 0 2rem;
}

.erro .hero__titulo {
  max-width: 18ch;
}

.erro__codigo {
  margin: 0;
  font-family: var(--fonte-display);
  font-size: clamp(4.5rem, 12vw, 7.5rem);
  font-weight: 600;
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--marca);
}

.secao {
  margin: 2.5rem 0;
}

.secao__topo {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.15rem;
}

.secao h2 {
  margin: 0;
  font-family: var(--fonte-display);
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.grade {
  display: grid;
  gap: 1rem;
}

.tile,
.painel,
.folha {
  background: var(--superficie);
  border: 1px solid var(--linha);
  border-radius: var(--raio);
}

.tile {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.25rem 1.35rem 1.35rem;
  text-decoration: none;
  color: var(--tinta);
  min-height: 9rem;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.tile:hover {
  text-decoration: none;
  color: var(--tinta);
  border-color: var(--floresta);
  transform: translateY(-2px);
}

.tile__kicker {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tinta-suave);
  font-weight: 600;
}

.tile h3,
.tile__titulo {
  margin: 0;
  font-family: var(--fonte-display);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.tile p {
  margin: 0.35rem 0 0;
  color: var(--tinta-suave);
  font-size: 0.98rem;
}

.tile__meta {
  margin-top: auto;
  padding-top: 0.85rem;
  font-size: 0.88rem;
  color: var(--tinta-suave);
}

.painel {
  padding: 1.35rem 1.5rem;
}

.folha {
  padding: clamp(1.25rem, 3vw, 2rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0.55rem 1.2rem;
  border: 0;
  border-radius: 999px;
  background: var(--floresta);
  color: var(--superficie);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

.btn:hover {
  background: var(--folha);
  color: var(--superficie);
  text-decoration: none;
}

.btn--ghost {
  background: transparent;
  color: var(--tinta);
  border: 1px solid var(--linha-forte);
}

.btn--ghost:hover {
  background: var(--superficie);
  color: var(--tinta);
  border-color: var(--tinta);
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1.25rem;
  font-size: 0.92rem;
  color: var(--tinta-suave);
}

.crumb a {
  color: var(--tinta-suave);
  text-decoration: none;
}

.crumb a:hover {
  color: var(--floresta);
  text-decoration: underline;
}

.pagina-titulo {
  margin: 0 0 0.35rem;
  font-family: var(--fonte-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-wrap: balance;
}

.pagina-meta {
  margin: 0 0 1.75rem;
  color: var(--tinta-suave);
}

.ementa {
  max-width: var(--medida);
  color: var(--tinta-suave);
  margin-bottom: 2rem;
}

.trilha {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--linha);
}

.trilha li {
  border-bottom: 1px solid var(--linha);
}

.trilha a {
  display: grid;
  grid-template-columns: 3.2rem 1fr auto;
  gap: 0.85rem;
  align-items: baseline;
  padding: 1rem 0.15rem;
  text-decoration: none;
  color: var(--tinta);
}

.trilha a:hover {
  color: var(--floresta);
}

.trilha__n {
  font-family: var(--fonte-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--floresta);
}

.trilha__titulo {
  font-weight: 600;
}

.trilha__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  justify-content: flex-end;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--linha);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--tinta-suave);
  background: var(--papel);
}

.artigo {
  max-width: var(--medida);
}

.artigo .pagina-titulo {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
}

.markdown-corpo {
  max-width: var(--medida);
}

.markdown-corpo h1,
.markdown-corpo h2,
.markdown-corpo h3 {
  font-family: var(--fonte-display);
  letter-spacing: -0.02em;
  text-wrap: balance;
  color: var(--tinta);
}

.markdown-corpo p,
.markdown-corpo li {
  text-wrap: pretty;
}

.markdown-corpo pre {
  background: #161b18;
  color: #e8ebe6;
  padding: 1rem 1.1rem;
  border-radius: 0.65rem;
  overflow-x: auto;
}

.markdown-corpo code {
  font-family: var(--fonte-mono);
  font-size: 0.9em;
}

.cta-slides {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.25rem;
  margin: 0 0 2rem;
  background: var(--tinta);
  color: var(--papel);
  border-radius: var(--raio);
  text-decoration: none;
}

.cta-slides:hover {
  color: var(--papel);
  text-decoration: none;
  background: #1d2620;
}

.cta-slides strong {
  font-family: var(--fonte-display);
  font-size: 1.25rem;
}

.cta-slides span {
  font-size: 0.92rem;
  opacity: 0.8;
}

.materiais {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.peca {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1rem;
  background: var(--superficie);
  border: 1px solid var(--linha);
  border-radius: 0.7rem;
  text-decoration: none;
  color: var(--tinta);
}

.peca:hover {
  border-color: var(--floresta);
  color: var(--tinta);
  text-decoration: none;
}

.peca__tipo {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tinta-suave);
}

.lista-blog {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--linha);
}

.hero:has(+ .lista-blog) {
  border-bottom: 0;
  margin-bottom: 0;
}

.entrada {
  display: grid;
  gap: 0.25rem;
  padding: 1.35rem 0.1rem;
  border-bottom: 1px solid var(--linha);
  text-decoration: none;
  color: var(--tinta);
}

.entrada:hover {
  color: var(--floresta);
  text-decoration: none;
}

.entrada time {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--tinta-suave);
}

.entrada h2 {
  margin: 0;
  font-family: var(--fonte-display);
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.vazio {
  padding: 2rem 0;
  color: var(--tinta-suave);
  max-width: 36rem;
}

.form-grupo {
  margin-bottom: 1.05rem;
}

.form-grupo label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.form-grupo input,
.form-grupo select,
.form-grupo textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--linha-forte);
  border-radius: var(--raio-sm);
  background: var(--superficie);
  color: var(--tinta);
  font: inherit;
}

.form-grupo input:focus-visible,
.form-grupo textarea:focus-visible {
  outline: 3px solid var(--folha);
  outline-offset: 2px;
  border-color: var(--folha);
}

.form-erros {
  color: var(--erro);
  font-size: 0.92rem;
  margin: 0.3rem 0 0;
  list-style: none;
  padding: 0;
}

.mensagens {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
}

.mensagens li {
  padding: 0.8rem 1rem;
  border-radius: 0.65rem;
  margin-bottom: 0.5rem;
}

.mensagens .sucesso,
.banner--ok {
  background: var(--ok-fundo);
  border: 1px solid var(--floresta);
}

.mensagens .erro,
.banner--erro {
  background: var(--erro-fundo);
  border: 1px solid var(--erro);
}

.mensagens .aviso,
.banner {
  background: var(--aviso-fundo);
  border: 1px solid var(--aviso);
  border-radius: 0.65rem;
  padding: 0.9rem 1.05rem;
  margin-bottom: 1.25rem;
}

.mensagens .info {
  background: #e7eee8;
  border: 1px solid var(--linha-forte);
}

.auth {
  display: grid;
  gap: 2rem;
  max-width: 920px;
  margin: 0 auto;
}

.auth__voz h1 {
  margin: 0.35rem 0 0.75rem;
  font-family: var(--fonte-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  text-wrap: balance;
}

.auth__voz p {
  margin: 0;
  color: var(--tinta-suave);
  max-width: 36ch;
}

.auth__folha {
  background: var(--superficie);
  border: 1px solid var(--linha);
  border-radius: var(--raio);
  padding: 1.5rem 1.4rem 1.6rem;
}

.auth__folha h1 {
  margin: 0 0 1rem;
  font-family: var(--fonte-display);
  font-size: 1.8rem;
}

.auth__links {
  margin: 1.2rem 0 0;
  color: var(--tinta-suave);
}

.apresentacao-wrapper {
  position: relative;
  width: 100%;
  height: calc(100dvh - 8rem);
  background: #0d100e;
  border-radius: var(--raio);
  overflow: hidden;
}

.apresentacao-wrapper iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.rodape {
  border-top: 1px solid var(--linha);
  padding: 1.25rem var(--gutter) 2rem;
  color: var(--tinta-suave);
  font-size: 0.88rem;
}

.rodape__interno {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.rodape a {
  color: var(--tinta-suave);
  text-decoration: none;
}

.rodape a:hover {
  color: var(--floresta);
}

.atelier--auth .palco {
  min-height: calc(100dvh - 7rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.overlay {
  display: none;
}

@media (min-width: 720px) {
  .marca__tag {
    display: block;
  }

  .grade--2 {
    grid-template-columns: 1fr 1fr;
  }

  .grade--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .auth {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: 1rem 0;
  }
}

@media (min-width: 900px) {
  .menu-toggle {
    display: none;
  }

  .nav {
    display: flex;
    align-items: center;
    gap: 1.35rem;
  }

  .nav-materiais__lista {
    position: absolute;
    right: 0;
    top: calc(100% + 0.4rem);
    min-width: 16rem;
    padding: 0.65rem 0.85rem;
    background: var(--superficie);
    border: 1px solid var(--linha);
    border-radius: 0.7rem;
    margin-top: 0;
    z-index: 30;
  }
}

@media (max-width: 899px) {
  .overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgb(20 26 22 / 0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms var(--ease);
    z-index: 35;
  }

  .is-menu-aberto .overlay {
    opacity: 1;
    pointer-events: auto;
  }

  /* A gaveta vive dentro de .cabecalho (sticky + z-index +
     backdrop-filter). Sem subir o pai, o overlay irmão cobre
     os links e intercepta o clique. */
  .is-menu-aberto .cabecalho {
    z-index: 50;
  }

  .menu-toggle {
    position: relative;
    z-index: 60;
  }

  .nav {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
    position: fixed;
    top: 0;
    right: 0;
    width: min(22rem, 88vw);
    height: 100dvh;
    padding: 5rem 1.35rem 1.5rem;
    background: var(--superficie);
    border-left: 1px solid var(--linha);
    z-index: 50;
    transform: translateX(100%);
    transition: transform 220ms var(--ease);
    overflow-y: auto;
  }

  .is-menu-aberto .nav {
    transform: translateX(0);
  }

  .nav__link,
  .nav-materiais summary {
    border-bottom: 0;
    padding: 0.65rem 0.85rem;
    border-radius: var(--raio-sm);
  }

  .nav__link.is-ativo {
    background: var(--ok-fundo);
    color: var(--floresta);
  }

  .nav__cta {
    background: transparent;
    color: var(--floresta) !important;
    padding: 0.65rem 0.85rem;
    border-radius: var(--raio-sm);
    gap: 0.4rem;
    justify-content: start;
  }

  .nav__cta-icon {
    display: inline-block;
    width: 1.1rem;
    height: 1.1rem;
    margin-bottom: 0.15rem;
  }

  .nav__cta:hover {
    background: var(--ok-fundo);
    color: var(--folha) !important;
  }

  .trilha a {
    grid-template-columns: 2.4rem 1fr;
  }

  .trilha__chips {
    grid-column: 2;
    justify-content: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-reduced-motion: no-preference) {
  #main.htmx-swapping {
    opacity: 0;
  }

  #main {
    transition: opacity 160ms var(--ease);
  }
}