/* ============================================================
   VARIÁVEIS GLOBAIS — altere aqui para mudar o tema inteiro
   ============================================================ */
:root {
  --color-bg:        #050c14;
  --color-surface:   #0a1628;
  --color-surface2:  #0f1f38;
  --color-accent:    #00d4ff;
  --color-accent2:   #0066ff;
  --color-text:      #e8f4fc;
  --color-muted:     #7a9bba;
  --color-border:    rgba(0, 212, 255, 0.15);

  --font-display: 'Courier New', Courier, monospace;
  --font-body:    system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;

  --radius:    12px;
  --gap:       2rem;
  --max-width: 1100px;

  --transition: 0.3s ease;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
}

html { 
  scroll-behavior: smooth; 
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  overflow-x: hidden; /* Evita scroll horizontal indesejado */
}

a { 
  color: var(--color-accent); 
  text-decoration: none; 
  transition: opacity var(--transition), color var(--transition); 
}

a:hover { 
  opacity: 0.75; 
}

ul, ol { 
  list-style: none; 
}

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

/* ============================================================
   UTILITÁRIOS
   ============================================================ */
.container {
  width: min(var(--max-width), 100% - 2.5rem);
  margin-inline: auto;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6rem 1rem;
}

/* Grade de pontos no fundo */
.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(0,212,255,0.18) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: gridDrift 20s linear infinite;
  z-index: 0;
}

/* Pulso central luminoso */
.hero__pulse {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(600px, 90vw);
  height: min(600px, 90vw);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,102,255,0.18) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
  z-index: 0;
}

/* Conteúdo do hero centralizado */
.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin-inline: auto;
  text-align: center;
}

.hero__tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  border: 1px solid var(--color-border);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  margin-bottom: 2rem;
  background: rgba(10, 22, 40, 0.5);
  backdrop-filter: blur(4px);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 12vw, 6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
  text-shadow: 0 0 30px rgba(0,212,255,0.3);
}

.hero__subtitle {
  font-size: clamp(1rem, 4vw, 1.2rem);
  color: var(--color-muted);
  margin-bottom: 3rem;
  max-width: 520px;
  margin-inline: auto;
}

/* Botão principal */
.btn-primary {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: bold;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-bg);
  background: var(--color-accent);
  padding: 1rem 2.5rem;
  border-radius: 999px;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary:hover {
  opacity: 1;
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0,212,255,0.4);
  background: #fff;
}

/* Ícones flutuantes */
.hero__nodes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.node {
  position: absolute;
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  opacity: 0.3;
  animation: float 6s ease-in-out infinite;
}

.node--1 { top: 15%; left: 10%; animation-delay: 0s; }
.node--2 { top: 75%; left: 8%;  animation-delay: 1s; }
.node--3 { top: 20%; right: 10%; animation-delay: 2s; }
.node--4 { top: 70%; right: 8%;  animation-delay: 0.5s; }
.node--5 { top: 45%; right: 18%; animation-delay: 1.5s; }

/* ============================================================
   SEÇÕES GERAIS
   ============================================================ */
.section { 
  padding: clamp(4rem, 10vw, 7rem) 0; 
}

.section--dark {
  background-color: var(--color-surface);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 5vw, 2rem);
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.section__icon { 
  font-size: 1.4rem; 
}

.section__badge {
  font-size: 0.65rem;
  font-family: var(--font-display);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--color-accent2);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  margin-left: 0.5rem;
}

/* ============================================================
   INTRO
   ============================================================ */
.intro { 
  padding-top: 5rem; 
}

.intro__text {
  font-size: clamp(1.1rem, 4vw, 1.3rem);
  color: var(--color-muted);
  max-width: 800px;
  border-left: 4px solid var(--color-accent);
  padding-left: 2rem;
  line-height: 1.7;
}

/* ============================================================
   CARDS DE CURSOS
   ============================================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--gap);
}

.card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--color-accent);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.card__logo {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: bold;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.card__duration {
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--color-muted);
  background: rgba(0,212,255,0.1);
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
}

.card__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: #fff;
}

.card__desc {
  font-size: 0.95rem;
  color: var(--color-muted);
  flex: 1;
}

.card__link {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: bold;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-top: 1rem;
  display: inline-block;
}

/* ============================================================
   CANAIS
   ============================================================ */
.channels-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.channel {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color var(--transition), transform var(--transition);
}

.channel:hover { 
  border-color: var(--color-accent); 
  transform: translateX(5px);
}

.channel__avatar {
  width: 56px;
  height: 56px;
  min-width: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-accent2), var(--color-accent));
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: bold;
  color: var(--color-bg);
}

.channel__info strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
  color: #fff;
}

.channel__info p { 
  font-size: 0.95rem; 
  color: var(--color-muted); 
}

.channel__info a { 
  font-size: 0.85rem; 
  font-weight: bold;
  display: inline-block; 
  margin-top: 0.6rem; 
}

/* ============================================================
   ROADMAP
   ============================================================ */
.roadmap {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 1rem;
}

.roadmap::before {
  content: '';
  position: absolute;
  left: 38px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent2), var(--color-accent), transparent);
}

.roadmap__step {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding: 2rem 0;
  position: relative;
}

.roadmap__num {
  min-width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-surface2);
  border: 2px solid var(--color-accent2);
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: bold;
  color: var(--color-accent);
  z-index: 1;
  transition: all var(--transition);
}

.roadmap__step--highlight .roadmap__num {
  background: var(--color-accent2);
  color: #fff;
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(0,102,255,0.4);
}

.roadmap__body h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: #fff;
}

.roadmap__body p { 
  font-size: 1rem; 
  color: var(--color-muted); 
}

/* Dica de Ouro */
.tip {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  background: linear-gradient(135deg, rgba(0,102,255,0.15), rgba(0,212,255,0.08));
  border: 1px solid rgba(0,212,255,0.3);
  border-radius: var(--radius);
  padding: 2rem;
  margin-top: 4rem;
}

.tip__icon { 
  font-size: 2rem; 
  flex-shrink: 0; 
}

.tip strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--color-accent);
}

.tip p { 
  font-size: 1rem; 
  color: var(--color-muted); 
  margin-bottom: 1rem; 
}

/* ============================================================
   VÍDEOS
   ============================================================ */
.videos-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--gap);
  align-items: start;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.video-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-featured__label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 1rem;
  padding-left: 0.5rem;
}

.video-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.video-list__item a {
  display: flex;
  gap: 1rem;
  align-items: center;
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.2rem;
  color: var(--color-text);
  transition: all var(--transition);
}

.video-list__item a:hover {
  opacity: 1;
  border-color: var(--color-accent);
  transform: translateX(6px);
  background: rgba(0, 212, 255, 0.05);
}

.video-list__thumb {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--color-accent);
  color: var(--color-bg);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.9rem;
}

.video-list__item strong { 
  display: block; 
  font-size: 0.95rem; 
  margin-bottom: 0.2rem; 
  color: #fff;
}

.video-list__item small { 
  color: var(--color-muted); 
  font-size: 0.8rem; 
}

/* ============================================================
   LIVROS
   ============================================================ */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--gap);
}

.book-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  transition: all var(--transition);
}

.book-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.book-card__spine {
  width: 10px;
  background: linear-gradient(to bottom, var(--color-accent2), var(--color-accent));
  flex-shrink: 0;
}

.book-card__content {
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.book-card__content h3 { 
  font-family: var(--font-display); 
  font-size: 1rem; 
  color: #fff;
  line-height: 1.4;
}

.book-card__author {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: bold;
}

.book-card__content p { 
  font-size: 0.9rem; 
  color: var(--color-muted); 
  flex: 1; 
}

/* ============================================================
   FILMES / SÉRIES
   ============================================================ */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--gap);
}

.media-card {
  background: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  transition: all var(--transition);
}

.media-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.media-card__type {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: bold;
  letter-spacing: 0.12em;
  color: var(--color-accent2);
  text-transform: uppercase;
}

.media-card h3 { 
  font-family: var(--font-display); 
  font-size: 1.1rem; 
  color: #fff;
}

.media-card p { 
  font-size: 0.95rem; 
  color: var(--color-muted); 
}

/* ============================================================
   LINKS RÁPIDOS
   ============================================================ */
.links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.link-pill {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: bold;
  letter-spacing: 0.05em;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.7rem 1.6rem;
  color: var(--color-text);
  transition: all var(--transition);
  background: rgba(255, 255, 255, 0.03);
}

.link-pill:hover {
  opacity: 1;
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,212,255,0.3);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 4rem 1rem;
  text-align: center;
}

.footer__inner { 
  display: flex; 
  flex-direction: column; 
  gap: 0.8rem; 
}

.footer p { 
  font-size: 1rem; 
  color: var(--color-muted); 
}

.footer__sub { 
  font-family: var(--font-display); 
  font-size: 0.8rem; 
  color: var(--color-accent2);
  letter-spacing: 0.05em;
}

/* ============================================================
   ANIMAÇÕES
   ============================================================ */

/* Drift suave da grade de pontos */
@keyframes gridDrift {
  0%   { background-position: 0 0; }
  100% { background-position: 40px 40px; }
}

/* Pulso de glow central */
@keyframes pulse {
  0%, 100% { transform: translate(-50%,-50%) scale(1);   opacity: 0.6; }
  50%       { transform: translate(-50%,-50%) scale(1.1); opacity: 0.9;   }
}

/* Float dos ícones decorativos */
@keyframes float {
  0%, 100% { transform: translateY(0);    }
  50%       { transform: translateY(-15px); }
}

/* Fade-in ao entrar na viewport (ativado via JS) */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0);    }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  animation: fadeInUp 0.8s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

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

/* Tablets e Desktops Pequenos */
@media (max-width: 992px) {
  .videos-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .video-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
  }
}

/* Mobile (Tablets em modo retrato e Celulares) */
@media (max-width: 768px) {
  :root {
    --gap: 1.5rem;
  }

  .section {
    padding: 4rem 0;
  }

  .hero {
    padding: 4rem 1rem;
  }

  /* Roadmap: linha vertical recuada */
  .roadmap::before { 
    left: 27px; 
  }

  .roadmap__step {
    gap: 1.5rem;
  }

  .roadmap__num {
    min-width: 48px;
    height: 48px;
    font-size: 0.8rem;
  }

  .intro__text {
    padding-left: 1.5rem;
  }
}

/* Celulares Pequenos */
@media (max-width: 480px) {
  .hero__content {
    text-align: left;
  }

  .hero__tag {
    margin-bottom: 1.5rem;
  }

  .hero__subtitle {
    margin-inline: 0;
  }

  .btn-primary {
    width: 100%;
    text-align: center;
  }

  .tip {
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
  }

  .channel { 
    flex-direction: column; 
    gap: 1rem;
  }

  .channel__avatar {
    width: 48px;
    height: 48px;
    min-width: 48px;
  }

  .cards-grid, .books-grid, .media-grid {
    grid-template-columns: 1fr;
  }

  .video-list {
    grid-template-columns: 1fr;
  }

  .section__title {
    font-size: 1.4rem;
  }
}

/* Suporte para telas muito largas */
@media (min-width: 1400px) {
  :root {
    --max-width: 1200px;
  }
}

/* Redução de movimento para usuários que preferem */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-delay: -1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    background-attachment: initial !important;
    scroll-behavior: auto !important;
    transition-duration: 0s !important;
    transition-delay: 0s !important;
  }
}