/* ============================================================
   LABORATÓRIO DE DESENVOLVIMENTO WEB
   STYLE.CSS
   ============================================================ */


/* ============================================================
   VARIÁVEIS
   ============================================================ */

:root {
  --cor-fundo: #f4f7fb;
  --cor-superficie: #ffffff;
  --cor-superficie-2: #f8fafc;

  --cor-primaria: #2563eb;
  --cor-primaria-escura: #1d4ed8;
  --cor-secundaria: #06b6d4;

  --cor-texto: #172033;
  --cor-texto-secundario: #64748b;
  --cor-texto-claro: #94a3b8;

  --cor-borda: black;

  --cor-codigo: #111827;
  --cor-codigo-topo: #1e293b;
  --cor-codigo-texto: #dbeafe;

  --cor-sucesso: #16a34a;
  --cor-alerta: #f59e0b;

  --sombra-pequena: 0 4px 12px rgba(15, 23, 42, 0.06);

  --sombra-media: 0 12px 30px rgba(15, 23, 42, 0.08);

  --sombra-grande: 0 25px 60px rgba(15, 23, 42, 0.12);

  --raio: 18px;
  --raio-pequeno: 10px;

  --transicao: all 0.25s ease;
}

/* ============================================================
   RESET
   ============================================================ */

* {
  margin: 0;
  padding: 0;

  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family:
    Inter,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;

  background: var(--cor-fundo);

  color: var(--cor-texto);

  line-height: 1.7;

  overflow-x: hidden;
}

img {
  max-width: 100%;

  height: auto;
}

a {
  color: inherit;

  text-decoration: none;
}

button,
input {
  font: inherit;
}

/* ============================================================
   SELEÇÃO DE TEXTO
   ============================================================ */

::selection {
  background: var(--cor-primaria);

  color: white;
}

/* ============================================================
   SCROLLBAR
   ============================================================ */

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #e2e8f0;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--cor-primaria), var(--cor-secundaria));

  border-radius: 20px;
}

/* ============================================================
   MENU FLUTUANTE
   ============================================================ */

.menu-flutuante {
  position: fixed;

  top: 25px;
  right: 25px;

  z-index: 9999;
}

.botao-menu {
  width: 58px;
  height: 58px;

  border: none;

  border-radius: 50%;

  background: linear-gradient(
    135deg,
    var(--cor-primaria),
    var(--cor-secundaria)
  );

  color: white;

  font-size: 18px;

  font-weight: 800;

  cursor: pointer;

  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.35);

  transition: var(--transicao);
}

.botao-menu:hover {
  transform: translateY(-4px) rotate(5deg);

  box-shadow: 0 15px 35px rgba(37, 99, 235, 0.45);
}

.opcoes-menu {
  position: absolute;

  top: 68px;
  right: 0;

  width: 210px;

  padding: 10px;

  background: rgba(255, 255, 255, 0.97);

  backdrop-filter: blur(15px);

  border: 1px solid var(--cor-borda);

  border-radius: 14px;

  box-shadow: var(--sombra-grande);

  display: none;
}

.opcoes-menu.aberto {
  display: block;

  animation: menuEntrada 0.2s ease;
}

.opcoes-menu a {
  display: block;

  padding: 12px 14px;

  border-radius: 9px;

  font-size: 14px;

  font-weight: 600;

  color: var(--cor-texto);

  transition: var(--transicao);
}

.opcoes-menu a:hover {
  background: #eff6ff;

  color: var(--cor-primaria);

  transform: translateX(4px);
}

@keyframes menuEntrada {
  from {
    opacity: 0;

    transform: translateY(-8px) scale(0.97);
  }

  to {
    opacity: 1;

    transform: translateY(0) scale(1);
  }
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
  position: relative;

  min-height: 570px;

  display: flex;

  align-items: center;

  justify-content: center;

  padding: 50px 25px 100px;

  color: white;

  background:
    radial-gradient(
      circle at 15% 20%,
      rgba(6, 182, 212, 0.3),
      transparent 30%
    ),
    radial-gradient(
      circle at 85% 75%,
      rgba(59, 130, 246, 0.3),
      transparent 35%
    ),
    linear-gradient(
      135deg,
      #07152d 0%,
      #0f2a52 45%,
      #123d6b 100%
    );

  overflow: hidden;
}


/* ============================================================
   ELEMENTOS DECORATIVOS
   ============================================================ */

.hero::before {
  content: "";

  position: absolute;

  width: 500px;
  height: 500px;

  top: -250px;
  left: -150px;

  border: 1px solid rgba(255, 255, 255, 0.08);

  border-radius: 50%;

  pointer-events: none;
}


.hero::after {
  content: "";

  position: absolute;

  width: 400px;
  height: 400px;

  right: -120px;
  bottom: -220px;

  border: 1px solid rgba(255, 255, 255, 0.08);

  border-radius: 50%;

  pointer-events: none;
}


/* ============================================================
   CONTEÚDO DO HERO
   ============================================================ */

.hero-conteudo {
  position: relative;

  z-index: 2;

  width: 100%;

  max-width: 1050px;

  overflow: visible;
}


/* ============================================================
   BADGE
   ============================================================ */

.badge-aula {
  display: inline-flex;

  align-items: center;

  gap: 8px;

  padding: 8px 15px;

  margin-bottom: 22px;

  border: 1px solid rgba(255, 255, 255, 0.18);

  border-radius: 100px;

  background: rgba(255, 255, 255, 0.08);

  backdrop-filter: blur(10px);

  color: #bae6fd;

  font-size: 12px;

  font-weight: 800;

  letter-spacing: 1px;
}


/* ============================================================
   TÍTULO PRINCIPAL
   ============================================================ */

.hero h1 {
  position: relative;

  display: block;

  width: 100%;

  max-width: 950px;

  margin: 0 0 5px 0;

  padding: 0 0 14px 0;

  color: white;

  font-size: clamp(42px, 7vw, 76px);

  font-weight: 800;

  line-height: 1.18;

  letter-spacing: -2.5px;

  overflow: visible;
}


/* ============================================================
   SEGUNDA LINHA DO TÍTULO
   ============================================================ */

.hero h1 span {
  display: block;

  width: max-content;

  max-width: 100%;

  padding: 0 0 10px 0;

  margin: 0;

  line-height: 1.18;

  overflow: visible;

  background: linear-gradient(
    90deg,
    #67e8f9 0%,
    #60a5fa 50%,
    #a78bfa 100%
  );

  -webkit-background-clip: text;

  background-clip: text;

  -webkit-text-fill-color: transparent;

  color: transparent;
}


.hero-subtitulo {
  max-width: 730px;

  color: #cbd5e1;

  font-size: 19px;
}

.hero-subtitulo strong {
  color: white;
}

.hero-botoes {
  display: flex;

  flex-wrap: wrap;

  gap: 14px;

  margin-top: 32px;
}

.btn {
  display: inline-flex;

  align-items: center;

  justify-content: center;

  gap: 8px;

  min-height: 48px;

  padding: 0 22px;

  border-radius: 10px;

  font-weight: 750;

  cursor: pointer;

  transition: var(--transicao);
}

.btn-principal {
  color: white;

  border: none;

  background: linear-gradient(135deg, var(--cor-primaria), #3b82f6);

  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.28);
}

.btn-principal:hover {
  transform: translateY(-3px);

  box-shadow: 0 15px 30px rgba(37, 99, 235, 0.38);
}

.btn-secundario {
  color: white;

  border: 1px solid rgba(255, 255, 255, 0.2);

  background: rgba(255, 255, 255, 0.08);

  backdrop-filter: blur(10px);
}

.btn-secundario:hover {
  background: rgba(255, 255, 255, 0.15);

  transform: translateY(-3px);
}

.hero-estatisticas {
  display: flex;

  flex-wrap: wrap;

  gap: 45px;

  margin-top: 55px;
}

.hero-estatisticas div {
  display: flex;

  flex-direction: column;
}

.hero-estatisticas strong {
  font-size: 30px;

  line-height: 1;
}

.hero-estatisticas span {
  margin-top: 5px;

  color: #94a3b8;

  font-size: 13px;
}

/* ============================================================
   CONTAINER
   ============================================================ */

.container {
  width: min(1100px, calc(100% - 40px));

  margin: 0 auto;
}

/* ============================================================
   LABELS
   ============================================================ */

.section-label {
  display: inline-block;

  margin-bottom: 8px;

  color: var(--cor-primaria);

  font-size: 11px;

  font-weight: 850;

  letter-spacing: 1.5px;
}

/* ============================================================
   INTRODUÇÃO
   ============================================================ */

.intro-card {
  display: grid;

  grid-template-columns: 90px 1fr;

  gap: 25px;

  margin-top: -60px;

  position: relative;

  z-index: 5;

  padding: 35px;

  background: var(--cor-superficie);

  border: 1px solid var(--cor-borda);

  border-radius: var(--raio);

  box-shadow: var(--sombra-grande);
}

.intro-icone {
  width: 78px;

  height: 78px;

  display: flex;

  align-items: center;

  justify-content: center;

  border-radius: 18px;

  background: linear-gradient(135deg, #dbeafe, #cffafe);

  font-size: 35px;
}

.intro-card h2,
.progresso-card h2 {
  margin-bottom: 8px;

  font-size: 27px;
}

.intro-card p {
  margin-bottom: 10px;

  color: var(--cor-texto-secundario);
}

.alerta-info {
  margin-top: 18px;

  padding: 15px 18px;

  border-left: 4px solid var(--cor-primaria);

  border-radius: 8px;

  background: #eff6ff;

  color: #334155;
}

/* ============================================================
   PROGRESSO
   ============================================================ */

.progresso-card {
  margin-top: 30px;

  padding: 30px;

  background: var(--cor-superficie);

  border: 1px solid var(--cor-borda);

  border-radius: var(--raio);

  box-shadow: var(--sombra-pequena);
}

.progresso-topo {
  display: flex;

  align-items: center;

  justify-content: space-between;

  gap: 20px;
}

.progresso-percentual {
  display: flex;

  align-items: center;

  justify-content: center;

  min-width: 65px;

  height: 42px;

  border-radius: 10px;

  background: #eff6ff;

  color: var(--cor-primaria);

  font-weight: 850;
}

.barra-progresso {
  width: 100%;

  height: 9px;

  margin: 22px 0;

  overflow: hidden;

  border-radius: 50px;

  background: #e2e8f0;
}

.barra-progresso-preenchida {
  width: 0%;

  height: 100%;

  border-radius: inherit;

  background: linear-gradient(
    90deg,
    var(--cor-primaria),
    var(--cor-secundaria)
  );

  transition: width 0.8s ease;
}

.etapas {
  display: grid;

  grid-template-columns: repeat(6, 1fr);

  gap: 10px;
}

.etapa {
  display: flex;

  align-items: center;

  gap: 9px;

  color: var(--cor-texto-claro);

  font-size: 12px;
}

.etapa span {
  width: 28px;

  height: 28px;

  display: flex;

  align-items: center;

  justify-content: center;

  border-radius: 50%;

  background: #f1f5f9;

  font-weight: 800;
}

.etapa.ativa {
  color: var(--cor-primaria);
}

.etapa.ativa span {
  color: white;

  background: var(--cor-primaria);
}

/* ============================================================
   CARD DA AULA
   ============================================================ */

.aula-card {
  margin-top: 30px;

  padding: 35px;

  background: var(--cor-superficie);

  border: 1px solid var(--cor-borda);

  border-radius: var(--raio);

  box-shadow: var(--sombra-pequena);

  transition: var(--transicao);
}

.aula-card:hover {
  box-shadow: var(--sombra-media);

  transform: translateY(-2px);
}

.aula-cabecalho {
  display: flex;

  align-items: center;

  gap: 20px;

  margin-bottom: 28px;
}

.numero-aula {
  flex-shrink: 0;

  width: 65px;

  height: 65px;

  display: flex;

  align-items: center;

  justify-content: center;

  border-radius: 16px;

  color: white;

  font-size: 20px;

  font-weight: 900;

  background: linear-gradient(
    135deg,
    var(--cor-primaria),
    var(--cor-secundaria)
  );

  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.22);
}

.tag-categoria {
  display: inline-block;

  margin-bottom: 5px;

  color: var(--cor-primaria);

  font-size: 10px;

  font-weight: 900;

  letter-spacing: 1.5px;
}

.aula-cabecalho h2 {
  margin-bottom: 2px;

  font-size: 27px;

  line-height: 1.25;
}

.aula-cabecalho p {
  color: var(--cor-texto-secundario);
}

/* ============================================================
   EXPLICAÇÃO
   ============================================================ */

.explicacao {
  margin-bottom: 22px;

  color: #475569;
}

.explicacao p {
  margin-bottom: 10px;
}

/* ============================================================
   CAIXA DE CÓDIGO
   ============================================================ */

.codigo-box {
  overflow: hidden;

  margin-top: 20px;

  border: 1px solid #263449;

  border-radius: 13px;

  background: var(--cor-codigo);

  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.15);
}

.codigo-header {
  display: flex;

  align-items: center;

  justify-content: space-between;

  padding: 12px 16px;

  background: var(--cor-codigo-topo);

  color: #e2e8f0;

  font-size: 11px;

  font-weight: 800;

  letter-spacing: 1px;
}

.codigo-header::before {
  /* content: "● ● ●"; */

  margin-right: auto;

  color: #64748b;

  letter-spacing: 4px;
}

.codigo-header > span:first-child {
  margin-left: 18px;
}

.codigo-linguagem {
  padding: 4px 8px;

  border-radius: 5px;

  background: rgba(255, 255, 255, 0.08);

  color: #93c5fd;
}

.codigo-box pre {
  margin: 0;

  padding: 22px;

  overflow-x: auto;

  color: var(--cor-codigo-texto);

  font-family: "Cascadia Code", "Fira Code", Consolas, monospace;

  font-size: 14px;

  line-height: 1.75;

  tab-size: 2;
}

.codigo-box code {
  font-family: inherit;
}

.codigo-box.pequeno pre {
  padding: 16px;

  font-size: 12px;
}

/* ============================================================
   RESULTADO
   ============================================================ */

.resultado-box {
  margin-top: 22px;

  overflow: hidden;

  border: 1px solid var(--cor-borda);

  border-radius: 13px;

  background: white;
}

.resultado-header {
  display: flex;

  align-items: center;

  justify-content: space-between;

  padding: 12px 16px;

  background: #f8fafc;

  border-bottom: 1px solid var(--cor-borda);

  color: #475569;

  font-size: 11px;

  font-weight: 850;

  letter-spacing: 0.8px;
}

.status-online {
  color: var(--cor-sucesso);
}

.resultado-conteudo {
  min-height: 100px;

  padding: 25px;
}

.resultado-conteudo h1,
.resultado-conteudo h2,
.resultado-conteudo h3,
.resultado-conteudo h4,
.resultado-conteudo h5,
.resultado-conteudo h6 {
  color: #172033;
}

.resultado-conteudo p {
  margin-bottom: 10px;
}

/* ============================================================
   OBSERVAÇÃO
   ============================================================ */

.observacao {
  margin-top: 18px;

  padding: 15px 18px;

  border-left: 4px solid var(--cor-secundaria);

  border-radius: 8px;

  background: #ecfeff;

  color: #334155;
}

/* ============================================================
   GRID DE INFORMAÇÕES
   ============================================================ */

.info-grid {
  display: grid;

  grid-template-columns: repeat(3, 1fr);

  gap: 15px;
}

.info-item {
  padding: 18px;

  border: 1px solid var(--cor-borda);

  border-radius: 12px;

  background: #f8fafc;
}

.info-item strong {
  display: block;

  margin-bottom: 5px;

  color: var(--cor-primaria);

  font-size: 14px;
}

.info-item span {
  color: var(--cor-texto-secundario);

  font-size: 13px;
}

/* ============================================================
   DUAS COLUNAS
   ============================================================ */

.duas-colunas {
  display: grid;

  grid-template-columns: repeat(2, 1fr);

  gap: 20px;
}

.mini-card {
  padding: 22px;

  border: 1px solid var(--cor-borda);

  border-radius: 14px;

  background: var(--cor-superficie-2);
}

.mini-card-icon {
  display: block;

  margin-bottom: 8px;

  font-size: 30px;
}

.mini-card h3 {
  margin-bottom: 15px;
}

.mini-card ol,
.mini-card ul {
  padding-left: 25px;
}

.mini-card li {
  margin-bottom: 4px;
}

/* ============================================================
   IMAGEM
   ============================================================ */

.resultado-imagem {
  display: flex;

  align-items: center;

  justify-content: center;
}

.imagem-placeholder {
  width: min(350px, 100%);

  min-height: 180px;

  display: flex;

  flex-direction: column;

  align-items: center;

  justify-content: center;

  gap: 10px;

  border: 2px dashed #cbd5e1;

  border-radius: 15px;

  background: #f8fafc;

  color: #94a3b8;

  font-size: 42px;
}

.imagem-placeholder span {
  font-size: 13px;
}

/* ============================================================
   LINKS
   ============================================================ */

.links-demo {
  display: flex;

  flex-wrap: wrap;

  gap: 12px;
}

.links-demo a {
  display: inline-flex;

  align-items: center;

  gap: 8px;

  padding: 11px 16px;

  border-radius: 9px;

  background: #eff6ff;

  color: var(--cor-primaria);

  font-weight: 700;

  transition: var(--transicao);
}

.links-demo a:hover {
  background: var(--cor-primaria);

  color: white;

  transform: translateY(-2px);
}

/* ============================================================
   FORMULÁRIO
   ============================================================ */

.form-demo {
  max-width: 550px;

  display: flex;

  flex-direction: column;

  gap: 8px;
}

.form-demo label {
  margin-top: 8px;

  color: #334155;

  font-size: 14px;

  font-weight: 700;
}

.form-demo input {
  width: 100%;

  min-height: 46px;

  padding: 0 13px;

  border: 1px solid var(--cor-borda);

  border-radius: 8px;

  outline: none;

  color: var(--cor-texto);

  background: white;

  transition: var(--transicao);
}

.form-demo input:focus {
  border-color: var(--cor-primaria);

  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-demo .btn {
  margin-top: 10px;

  align-self: flex-start;
}

/* ============================================================
   ESTRUTURA SEMÂNTICA
   ============================================================ */

.site-preview {
  overflow: hidden;

  border: 1px solid var(--cor-borda);

  border-radius: 12px;
}

.site-preview header {
  padding: 20px;

  text-align: center;

  background: #dbeafe;

  color: #1e40af;

  font-weight: 900;
}

.site-preview nav {
  padding: 12px;

  text-align: center;

  background: #e0f2fe;

  color: #0369a1;

  font-size: 13px;

  font-weight: 700;
}

.site-preview main {
  padding: 25px;

  background: white;
}

.site-preview section {
  padding: 25px;

  border: 2px dashed #cbd5e1;

  border-radius: 10px;

  text-align: center;
}

.site-preview footer {
  padding: 18px;

  text-align: center;

  background: #172033;

  color: #cbd5e1;

  font-size: 13px;
}

/* ============================================================
   DIV / SPAN / DETAILS
   ============================================================ */

.demo-div {
  padding: 20px;

  margin-bottom: 20px;

  border: 1px solid var(--cor-borda);

  border-radius: 12px;

  background: #f8fafc;
}

.demo-div h3 {
  margin-bottom: 5px;
}

.destaque-span {
  padding: 2px 7px;

  border-radius: 5px;

  background: #fef3c7;

  color: #92400e;

  font-weight: 700;
}

.resultado-conteudo details {
  padding: 15px;

  border: 1px solid var(--cor-borda);

  border-radius: 10px;

  background: white;
}

.resultado-conteudo summary {
  cursor: pointer;

  color: var(--cor-primaria);

  font-weight: 750;
}

.resultado-conteudo details p {
  margin-top: 12px;

  color: var(--cor-texto-secundario);
}

/* ============================================================
   DESAFIOS
   ============================================================ */

.desafio-card {
  /* position: relative; */

  margin-top: 30px;

  padding: 35px;

  overflow: hidden;

  border: 1px solid #bfdbfe;

  border-radius: var(--raio);

  background: linear-gradient(135deg, #eff6ff, #ecfeff);
}

.desafio-card::after {
  content: "✦";

  position: absolute;

  right: 30px;

  top: 15px;

  font-size: 100px;

  color: rgba(37, 99, 235, 0.05);
}

.desafio-numero {
  display: inline-block;

  margin-bottom: 12px;

  padding: 6px 11px;

  border-radius: 7px;

  background: var(--cor-primaria);

  color: white;

  font-size: 10px;

  font-weight: 900;

  letter-spacing: 1px;
}

.desafio-card h2 {
  margin-bottom: 10px;

  font-size: 29px;
}

.desafio-card > p {
  max-width: 750px;

  color: #475569;
}

.checklist {
  display: grid;

  grid-template-columns: repeat(2, 1fr);

  gap: 10px;

  margin-top: 25px;
}

.checklist label {
  position: relative;

  z-index: 2;

  display: flex;

  align-items: center;

  gap: 10px;

  padding: 13px 15px;

  border: 1px solid rgba(148, 163, 184, 0.3);

  border-radius: 10px;

  background: rgba(255, 255, 255, 0.7);

  color: #334155;

  cursor: pointer;

  transition: var(--transicao);
}

.checklist label:hover {
  border-color: #93c5fd;

  transform: translateY(-2px);
}

.checklist input {
  width: 18px;

  height: 18px;

  accent-color: var(--cor-primaria);
}

.desafio-grid {
  display: grid;

  grid-template-columns: repeat(2, 1fr);

  gap: 20px;

  margin-top: 25px;
}

.desafio-grid > div {
  padding: 20px;

  border: 1px solid rgba(148, 163, 184, 0.3);

  border-radius: 12px;

  background: rgba(255, 255, 255, 0.65);
}

.desafio-grid ul {
  margin-top: 10px;

  padding-left: 20px;
}

.desafio-grid li {
  margin-bottom: 5px;
}

/* ============================================================
   PROJETO FINAL
   ============================================================ */

.projeto-card {
  position: relative;

  margin-top: 35px;

  padding: 50px 40px;

  overflow: hidden;

  border: 1px solid #1e3a8a;

  border-radius: 24px;

  color: white;

  background:
    radial-gradient(
      circle at 10% 20%,
      rgba(6, 182, 212, 0.25),
      transparent 30%
    ),
    radial-gradient(
      circle at 90% 80%,
      rgba(139, 92, 246, 0.25),
      transparent 35%
    ),
    linear-gradient(135deg, #0f172a, #172554, #0c4a6e);

  box-shadow: var(--sombra-grande);
}

.projeto-glow {
  position: absolute;

  width: 300px;

  height: 300px;

  top: -150px;

  right: -100px;

  border-radius: 50%;

  background: rgba(59, 130, 246, 0.18);

  filter: blur(50px);
}

.projeto-label {
  position: relative;

  display: inline-block;

  margin-bottom: 10px;

  color: #67e8f9;

  font-size: 11px;

  font-weight: 900;

  letter-spacing: 1.5px;
}

.projeto-card h2 {
  position: relative;

  margin-bottom: 10px;

  font-size: clamp(32px, 5vw, 50px);
}

.projeto-descricao {
  position: relative;

  max-width: 700px;

  color: #cbd5e1;
}

.projeto-grid {
  position: relative;

  display: grid;

  grid-template-columns: repeat(3, 1fr);

  gap: 12px;

  margin-top: 35px;
}

.projeto-item {
  display: flex;

  flex-direction: column;

  padding: 20px;

  border: 1px solid rgba(255, 255, 255, 0.1);

  border-radius: 12px;

  background: rgba(255, 255, 255, 0.05);

  backdrop-filter: blur(10px);

  transition: var(--transicao);
}

.projeto-item:hover {
  background: rgba(255, 255, 255, 0.09);

  transform: translateY(-4px);
}

.projeto-item span {
  margin-bottom: 12px;

  color: #67e8f9;

  font-size: 12px;

  font-weight: 900;
}

.projeto-item strong {
  font-size: 16px;
}

.projeto-item small {
  margin-top: 4px;

  color: #94a3b8;
}

.projeto-objetivo {
  position: relative;

  margin-top: 25px;

  padding: 17px;

  border: 1px solid rgba(255, 255, 255, 0.12);

  border-radius: 10px;

  background: rgba(255, 255, 255, 0.05);

  color: #cbd5e1;
}

/* ============================================================
   RESUMO
   ============================================================ */

.resumo-card {
  margin-top: 30px;

  padding: 35px;

  border: 1px solid var(--cor-borda);

  border-radius: var(--raio);

  background: white;

  box-shadow: var(--sombra-pequena);
}

.resumo-card h2 {
  margin-bottom: 25px;

  font-size: 28px;
}

.resumo-grid {
  display: grid;

  grid-template-columns: repeat(4, 1fr);

  gap: 12px;
}

.resumo-item {
  padding: 14px;

  border: 1px solid var(--cor-borda);

  border-radius: 9px;

  background: #f8fafc;

  color: #334155;

  font-size: 13px;

  font-weight: 650;
}

/* ============================================================
   FINAL
   ============================================================ */

.final-card {
  display: grid;

  grid-template-columns: 85px 1fr;

  align-items: center;

  gap: 25px;

  margin: 30px 0;

  padding: 35px;

  border: 1px solid #bbf7d0;

  border-radius: var(--raio);

  background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
}

.final-icone {
  width: 75px;

  height: 75px;

  display: flex;

  align-items: center;

  justify-content: center;

  border-radius: 20px;

  background: #dcfce7;

  font-size: 36px;
}

.final-card h2 {
  margin-bottom: 8px;

  color: #166534;

  font-size: 26px;
}

.final-card p {
  margin-bottom: 6px;

  color: #475569;
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  margin-top: 50px;

  padding: 30px 20px;

  color: #94a3b8;

  background: #0f172a;
}

.footer-conteudo {
  width: min(1100px, calc(100% - 40px));

  margin: auto;

  display: flex;

  align-items: center;

  justify-content: space-between;

  gap: 20px;
}

.footer strong {
  color: #e2e8f0;
}

.footer span {
  font-size: 13px;
}

/* ============================================================
   RESPONSIVIDADE
   ============================================================ */

@media (max-width: 900px) {
  .hero {
    min-height: 520px;
  }

  .hero h1 {
    letter-spacing: -2px;
  }

  .info-grid {
    grid-template-columns: 1fr;
  }

  .projeto-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .resumo-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 700px) {
  .container {
    width: min(100% - 24px, 1100px);
  }

  .menu-flutuante {
    top: 15px;

    right: 15px;
  }

  .hero {
    padding: 100px 20px 80px;
  }

  .hero h1 {
    font-size: 45px;
  }

  .hero-subtitulo {
    font-size: 16px;
  }

  .hero-estatisticas {
    gap: 25px;
  }

  .intro-card {
    grid-template-columns: 1fr;

    margin-top: -45px;

    padding: 25px;
  }

  .intro-icone {
    width: 60px;

    height: 60px;

    font-size: 27px;
  }

  .aula-card,
  .desafio-card,
  .resumo-card {
    padding: 25px;
  }

  .aula-cabecalho {
    align-items: flex-start;
  }

  .numero-aula {
    width: 52px;

    height: 52px;

    font-size: 16px;
  }

  .aula-cabecalho h2 {
    font-size: 23px;
  }

  .duas-colunas,
  .desafio-grid {
    grid-template-columns: 1fr;
  }

  .checklist {
    grid-template-columns: 1fr;
  }

  .projeto-grid {
    grid-template-columns: 1fr;
  }

  .resumo-grid {
    grid-template-columns: 1fr;
  }

  .final-card {
    grid-template-columns: 1fr;
  }

  .etapas {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-conteudo {
    flex-direction: column;

    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 38px;
  }

  .hero-botoes {
    flex-direction: column;
  }

  .hero-botoes .btn {
    width: 100%;
  }

  .hero-estatisticas {
    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 10px;
  }

  .hero-estatisticas strong {
    font-size: 24px;
  }

  .hero-estatisticas span {
    font-size: 11px;
  }

  .codigo-box pre {
    padding: 17px;

    font-size: 12px;
  }

  .progresso-card {
    padding: 22px;
  }

  .progresso-topo {
    align-items: flex-start;
  }

  .etapas {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================================
   ACESSIBILIDADE
   ============================================================ */

:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.35);

  outline-offset: 3px;
}

/* ============================================================
   REDUÇÃO DE MOVIMENTO
   ============================================================ */

@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;
  }
}