/* ============================================================
   Túlio Iannini — Portfólio (CSS público)
   Design: elegante, tons de cinza, tipografia serifada
   Reescrito para corrigir: conflitos de classes, contraste em
   seções escuras, header sobre conteúdo claro, alinhamento
   do hero, e âncoras escondidas atrás do header fixo.
   ============================================================ */

/* ─── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --gray-50:  #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-300: #d4d4d4;
  --gray-400: #a3a3a3;
  --gray-500: #737373;
  --gray-600: #525252;
  --gray-700: #404040;
  --gray-800: #262626;
  --gray-900: #171717;
  --black:    #0a0a0a;
  --white:    #ffffff;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

  --header-h: 72px;
  --section-pad: 96px;
  --container: 1200px;
  --radius: 2px;

  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }

/* ─── Tipografia ───────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  color: var(--gray-900);
}
h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }
p  { font-size: 1rem; line-height: 1.75; color: var(--gray-600); }

/* ─── Layout base ──────────────────────────────────────────── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Bloco de seção (com compensação para o header fixo) */
.section-block {
  padding: var(--section-pad) 0;
  scroll-margin-top: var(--header-h);
}

.section-dark {
  background: var(--gray-900);
  color: var(--white);
}

/* Título da seção: na HTML é uma DIV envolvendo o <h2>.
   Aplicamos o tratamento de "cabeçalho centralizado" ao wrapper
   sem reescrever o tamanho do <h2>. */
.section-title {
  text-align: center;
  margin-bottom: 56px;
}
.section-title h2 {
  display: inline-block;
  position: relative;
  padding-bottom: 16px;
  color: var(--gray-900);
}
.section-title h2::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 48px;
  height: 2px;
  background: var(--gray-400);
  transform: translateX(-50%);
}
.section-dark .section-title h2 { color: var(--white); }
.section-dark .section-title h2::after { background: rgba(255,255,255,0.4); }

/* ─── Header ───────────────────────────────────────────────── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

/* JS adiciona .scrolled depois de 60px de rolagem */
.header.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.header-logo { display: flex; align-items: center; }
.header-logo img,
.header-logo .logo-white {
  height: 36px;
  width: auto;
  object-fit: contain;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.header-nav a {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition);
  position: relative;
  padding: 4px 0;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--white);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.header-nav a:hover,
.header-nav a.active { color: var(--white); }
.header-nav a:hover::after,
.header-nav a.active::after { transform: scaleX(1); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Lang switcher — HTML usa <a class="active"> dentro de .lang-switcher */
.lang-switcher {
  display: flex;
  gap: 4px;
  align-items: center;
}

.lang-switcher a {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.5);
  padding: 4px 8px;
  border-radius: 2px;
  text-transform: uppercase;
  transition: color var(--transition), background var(--transition);
}

.lang-switcher a:hover { color: var(--white); }

.lang-switcher a.active {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--white);
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.logo-text-fallback {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.05em;
}

/* ─── Hero ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/tulio-hero.jpg');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.1) 0%,
    rgba(0,0,0,0.25) 40%,
    rgba(0,0,0,0.75) 80%,
    rgba(0,0,0,0.92) 100%
  );
}

/* Conteúdo do hero contido na largura do container */
.hero-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 80px;
}

.hero-logo {
  height: 72px;
  width: auto;
  margin-bottom: 24px;
  filter: brightness(0) invert(1);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin-bottom: 36px;
  font-weight: 300;
  line-height: 1.65;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border: 1px solid rgba(255,255,255,0.5);
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background var(--transition), border-color var(--transition);
}

.hero-cta:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--white);
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  right: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  z-index: 1;
}

.hero-scroll::after {
  content: '';
  display: block;
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.3);
  animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { transform: scaleY(1); opacity: 0.3; }
  50%      { transform: scaleY(0.5); opacity: 0.8; }
}

/* ─── Botões ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
  cursor: pointer;
}

.btn-dark {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.35);
}
.btn-dark:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--white);
}

.btn-light {
  background: var(--gray-900);
  color: var(--white);
  border: 1px solid var(--gray-900);
}
.btn-light:hover { background: var(--gray-700); border-color: var(--gray-700); }

/* ─── Sobre ────────────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: center;
}

.about-photo { position: relative; }
.about-photo img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: top;
  border-radius: var(--radius);
}

.about-photo::before {
  content: '';
  position: absolute;
  top: -12px; bottom: -12px;
  left: 12px; right: -12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  z-index: -1;
}

.about-text p {
  margin-bottom: 16px;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--gray-600);
}
.about-text p:last-child { margin-bottom: 0; }

/* ─── Livros ───────────────────────────────────────────────── */
.books-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.book-card {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  transition: background var(--transition), transform var(--transition);
}
.book-card:hover {
  transform: translateY(-2px);
  background: rgba(255,255,255,0.05);
}
.book-card img {
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 4px 8px 24px rgba(0,0,0,0.35);
}

/* Em seção escura mantemos branco/cinza-claro */
.section-dark .book-card h3 { color: var(--white); }
.section-dark .book-card p  { color: var(--gray-400); }

.book-publisher {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-top: 4px;
  margin-bottom: 8px;
}

.book-card h3 { margin-bottom: 4px; }
.book-card .btn-dark,
.book-card .btn-light { margin-top: 12px; }

/* ─── Eventos ──────────────────────────────────────────────── */
.events-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.event-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 20px;
  align-items: center;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  padding: 20px 24px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.event-item:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.event-date {
  text-align: center;
  border-right: 1px solid var(--gray-200);
  padding-right: 20px;
  display: block;
}

.event-date .day {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--gray-900);
  line-height: 1;
}

.event-date .month-year {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-top: 6px;
}

.event-info h3 {
  font-size: 1.125rem;
  margin-bottom: 6px;
  color: var(--gray-900);
}

.event-info p {
  font-size: 0.9375rem;
  color: var(--gray-500);
  margin: 0 0 4px;
  line-height: 1.5;
}

/* ─── Artigos / Entrevistas ────────────────────────────────── */
.articles-grid,
.interviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card,
.interview-card {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  overflow: hidden;
  transition: transform var(--transition), background var(--transition);
}
.article-card:hover,
.interview-card:hover {
  transform: translateY(-3px);
  background: rgba(255,255,255,0.06);
}

.article-card img,
.interview-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

/* Padding interno em tudo que não for imagem */
.article-card > *:not(img) { padding-left: 20px; padding-right: 20px; }
.interview-card > *:not(img) { padding-left: 20px; padding-right: 20px; }

.article-card > :nth-child(2):not(img) { padding-top: 18px; }
.interview-card > :nth-child(2):not(img) { padding-top: 18px; }

.article-card > *:last-child,
.interview-card > *:last-child { padding-bottom: 20px; }

.article-card h3,
.interview-card h3 {
  font-size: 1.125rem;
  margin: 4px 0 8px;
  line-height: 1.35;
  color: var(--white);
}

.article-card p,
.interview-card p {
  font-size: 0.9375rem;
  color: var(--gray-400);
  margin-bottom: 14px;
  line-height: 1.6;
}

.article-category {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 4px;
}

.article-date {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.interview-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 18px;
}
.interview-info h3 { margin: 0; }
.outlet {
  font-size: 0.8125rem;
  color: var(--gray-400);
  font-style: italic;
}

/* Botões de artigo/entrevista alinhados na base */
.article-card .btn-dark,
.article-card .btn-light,
.interview-card .btn-dark,
.interview-card .btn-light { margin-top: auto; align-self: flex-start; }

/* ─── Podcasts ─────────────────────────────────────────────── */
.podcast-channel { margin-bottom: 56px; }
.podcast-channel:last-child { margin-bottom: 0; }

.podcast-channel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.podcast-channel-header h3 {
  font-size: 1.5rem;
  color: var(--white);
  margin-bottom: 8px;
}

.podcast-channel-header p {
  color: var(--gray-400);
  font-size: 0.9375rem;
  max-width: 560px;
  margin: 0;
}

.videos-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.video-card {
  cursor: pointer;
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition);
}
.video-card:hover { transform: translateY(-2px); }
.video-card:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 3px;
}

.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-800);
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }

.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.25);
  color: var(--white);
  font-size: 2.5rem;
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }

.video-duration {
  position: absolute;
  bottom: 6px;
  right: 8px;
  background: rgba(0,0,0,0.85);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 2px;
}

.video-info { padding: 12px 0 0; }

.video-title {
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--white);
  margin-bottom: 4px;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-date {
  font-size: 0.8125rem;
  color: var(--gray-500);
}

/* ─── Cursos / Palestras / E-books ─────────────────────────── */
.courses-grid,
.lectures-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.ebooks-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.course-card,
.lecture-card,
.ebook-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

/* Cards em seção escura (palestras) */
.section-dark .lecture-card {
  background: rgba(255,255,255,0.03);
  border-color: rgba(255,255,255,0.1);
}

.course-card:hover,
.lecture-card:hover,
.ebook-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  transform: translateY(-2px);
}

.course-card > img,
.ebook-card > img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

/* Lecture thumb container (div) */
.lecture-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-800);
  display: block;
}
.lecture-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Conteúdo interno padronizado: h3, p, meta, link com padding lateral */
.course-card > h3,
.course-card > p,
.lecture-card > h3,
.lecture-card > p,
.lecture-card > .lecture-meta,
.ebook-card > h3,
.ebook-card > p {
  padding: 0 20px;
  margin: 0;
}

.course-card > h3,
.lecture-card > h3,
.ebook-card > h3 {
  font-size: 1.0625rem;
  margin: 18px 0 8px;
  color: var(--gray-900);
}

.section-dark .lecture-card h3 { color: var(--white); }

.course-card > p,
.lecture-card > p,
.ebook-card > p {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.55;
  margin-bottom: 12px;
}

.section-dark .lecture-card p { color: var(--gray-400); }

.course-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.course-info h3 {
  padding: 0;
  margin: 0 0 8px;
  font-size: 1.0625rem;
  color: var(--gray-900);
}

.course-info p {
  padding: 0;
  margin: 0 0 12px;
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.55;
}

.course-duration,
.lecture-meta {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin: 0 0 14px;
}

.lecture-meta { padding: 0 20px; }
.course-info .course-duration { padding: 0; }
.section-dark .lecture-meta { color: var(--gray-400); }

/* Botões: empurrar para a base e alinhar à esquerda */
.course-card > .btn-light,
.lecture-card > .btn-dark,
.lecture-card > .btn-light,
.ebook-card > .btn-light,
.ebook-card > .btn-dark,
.course-info > .btn-light,
.course-info > .btn-dark {
  margin: auto 20px 20px;
  align-self: flex-start;
}

.course-info > .btn-light,
.course-info > .btn-dark { margin: auto 0 0; }

/* ─── Contato ──────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 720px;
  margin: 0 auto;
}

.contact-form {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  color: var(--white);
  transition: border-color var(--transition), background var(--transition);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray-500); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.08);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 40px;
  background: var(--white);
  color: var(--gray-900);
  border: 1px solid var(--white);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  min-width: 220px;
}

.btn-submit:hover:not(:disabled) {
  background: transparent;
  color: var(--white);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.contact-feedback {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  margin-top: 16px;
  display: none;
}

.contact-feedback.success {
  background: rgba(34,197,94,0.15);
  color: #4ade80;
  border: 1px solid rgba(34,197,94,0.3);
  display: block;
}

.contact-feedback.error {
  background: rgba(239,68,68,0.15);
  color: #f87171;
  border: 1px solid rgba(239,68,68,0.3);
  display: block;
}

/* ─── Footer ───────────────────────────────────────────────── */
.footer {
  background: var(--black);
  color: var(--white);
  padding: 56px 0 32px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-logo { display: flex; align-items: center; }
.footer-logo img {
  height: 36px;
  width: auto;
}

.footer-social {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-social a {
  font-size: 0.8125rem;
  color: var(--gray-500);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.footer-social a:hover { color: var(--white); }

.footer-copy p {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin: 0;
}

/* ─── Modal de Vídeo ───────────────────────────────────────── */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.video-modal.open {
  opacity: 1;
  pointer-events: all;
}

.video-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.92);
  cursor: pointer;
}

.video-modal-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 900px;
  background: var(--gray-900);
  border-radius: 4px;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.video-modal.open .video-modal-content {
  transform: scale(1);
}

.video-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  color: var(--white);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  border: none;
  cursor: pointer;
  line-height: 1;
}

.video-modal-close:hover { background: rgba(255,255,255,0.3); }

.video-modal-player {
  position: relative;
  aspect-ratio: 16/9;
  background: #000;
}

.video-modal-player iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-modal-share {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  background: rgba(0,0,0,0.3);
  border-top: 1px solid rgba(255,255,255,0.06);
  flex-wrap: wrap;
}

.share-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-right: 4px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 3px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.2);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.share-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.share-btn:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.4); }
.share-whatsapp:hover { background: rgba(37,211,102,0.15); border-color: #25d366; color: #25d366; }
.share-twitter:hover  { background: rgba(255,255,255,0.05); border-color: #fff; }
.share-linkedin:hover { background: rgba(0,119,181,0.2); border-color: #0077b5; color: #5eb6e0; }

/* ─── Loading placeholder ──────────────────────────────────── */
.loading-placeholder {
  text-align: center;
  padding: 48px 24px;
  color: var(--gray-400);
  font-size: 0.9375rem;
  grid-column: 1 / -1;
}

/* ─── Animações de scroll ──────────────────────────────────── */
[data-animate],
[data-stagger] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s cubic-bezier(0.16,1,0.3,1),
              transform 0.6s cubic-bezier(0.16,1,0.3,1);
}

[data-animate='fade-left']  { transform: translateX(-32px); }
[data-animate='fade-right'] { transform: translateX(32px);  }

[data-animate].is-visible,
[data-stagger].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-animate],
  [data-stagger] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  html { scroll-behavior: auto; }
}

/* ─── Utilitários ──────────────────────────────────────────── */
.text-center { text-align: center; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ─── Responsivo ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .articles-grid,
  .interviews-grid,
  .courses-grid,
  .lectures-grid,
  .videos-grid { grid-template-columns: repeat(2, 1fr); }
  .ebooks-grid  { grid-template-columns: repeat(2, 1fr); }
  .books-grid   { grid-template-columns: 1fr; }
  .events-list  { grid-template-columns: 1fr; }
  .about-grid   { gap: 40px; }
}

@media (max-width: 768px) {
  :root {
    --section-pad: 64px;
    --header-h: 60px;
  }

  /* Menu navegação vira drop-down em mobile */
  .header-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(10,10,10,0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 18px;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    border-top: 1px solid rgba(255,255,255,0.06);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }

  .header-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  /* Em mobile o header começa sólido, para garantir contraste do menu */
  .header { background: rgba(10,10,10,0.4); }

  .menu-toggle { display: flex; }

  .hero-logo { height: 56px; }
  .hero-subtitle { font-size: 1rem; }
  .hero-scroll { display: none; }

  .section-title { margin-bottom: 40px; }

  .about-grid    { grid-template-columns: 1fr; gap: 32px; }
  .about-photo   { max-width: 320px; margin: 0 auto; }
  .about-photo::before { display: none; }

  .articles-grid,
  .interviews-grid,
  .courses-grid,
  .lectures-grid,
  .videos-grid,
  .ebooks-grid { grid-template-columns: 1fr 1fr; gap: 16px; }

  .book-card { grid-template-columns: 100px 1fr; gap: 16px; padding: 16px; }

  .event-item { grid-template-columns: 70px 1fr; gap: 14px; padding: 16px; }
  .event-date { padding-right: 14px; }
  .event-date .day { font-size: 1.75rem; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .btn-submit { width: 100%; min-width: 0; }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-social { justify-content: center; }

  .podcast-channel-header { flex-direction: column; }

  .video-modal { padding: 12px; }
  .video-modal-close { top: 6px; right: 6px; }
  .video-modal-share { gap: 8px; padding: 12px; }
  .share-btn { padding: 6px 10px; font-size: 0.75rem; }
}

@media (max-width: 480px) {
  .articles-grid,
  .interviews-grid,
  .courses-grid,
  .lectures-grid,
  .videos-grid,
  .ebooks-grid { grid-template-columns: 1fr; }
  .hero-content { padding-bottom: 64px; }
}

/* ============================================================
   v2 — Carrossel horizontal + Modal de detalhes
   ============================================================ */

/* ─── Carrossel horizontal ────────────────────────────────── */
.carousel-wrapper {
  position: relative;
  margin: 0 -8px;
}

.carousel-track {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 4px 8px 24px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(128,128,128,0.3) transparent;
}

.carousel-track::-webkit-scrollbar { height: 6px; }
.carousel-track::-webkit-scrollbar-track { background: transparent; }
.carousel-track::-webkit-scrollbar-thumb {
  background: rgba(128,128,128,0.3);
  border-radius: 3px;
}
.section-dark .carousel-track::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
}

.carousel-track > * {
  scroll-snap-align: start;
  flex-shrink: 0;
}

/* Itens dentro do track têm largura fixa por viewport */
.carousel-track.books-grid > .book-card        { width: calc(50% - 12px); }
.carousel-track.events-list > .event-item      { width: calc(50% - 12px); }
.carousel-track.articles-grid > .article-card,
.carousel-track.interviews-grid > .interview-card,
.carousel-track.courses-grid > .course-card,
.carousel-track.lectures-grid > .lecture-card  { width: calc(33.333% - 16px); }
.carousel-track.ebooks-grid > .ebook-card      { width: calc(25% - 18px); }
.carousel-track.videos-grid > .video-card      { width: calc(33.333% - 14px); }

/* Resetar regras antigas de grid para essas classes quando usadas como carrossel */
.carousel-track.books-grid,
.carousel-track.events-list,
.carousel-track.articles-grid,
.carousel-track.interviews-grid,
.carousel-track.courses-grid,
.carousel-track.lectures-grid,
.carousel-track.ebooks-grid,
.carousel-track.videos-grid {
  display: flex !important;
  grid-template-columns: none !important;
}

/* Setas de navegação */
.carousel-nav {
  position: absolute;
  top: calc(50% - 14px);
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  color: var(--gray-900);
  border: none;
  cursor: pointer;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  opacity: 0;
  transition: opacity 0.3s ease, background 0.2s ease, transform 0.2s ease, color 0.2s ease;
  font-size: 1.5rem;
  font-family: var(--font-sans);
  line-height: 1;
  font-weight: 400;
}

.carousel-wrapper:hover .carousel-nav,
.carousel-wrapper:focus-within .carousel-nav { opacity: 1; }

.carousel-nav:hover:not(:disabled) {
  background: var(--white);
  transform: translateY(-50%) scale(1.06);
}

.carousel-nav:disabled {
  opacity: 0 !important;
  cursor: default;
  pointer-events: none;
}

.carousel-prev { left: -10px; }
.carousel-next { right: -10px; }

.section-dark .carousel-nav {
  background: rgba(255,255,255,0.18);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.section-dark .carousel-nav:hover:not(:disabled) {
  background: rgba(255,255,255,0.3);
}

/* Em telas pequenas as setas ficam sempre visíveis e menores */
@media (max-width: 768px) {
  .carousel-nav {
    width: 36px;
    height: 36px;
    font-size: 1.25rem;
    opacity: 0.85;
  }
  .carousel-prev { left: -4px; }
  .carousel-next { right: -4px; }

  .carousel-track.books-grid > .book-card,
  .carousel-track.events-list > .event-item,
  .carousel-track.articles-grid > .article-card,
  .carousel-track.interviews-grid > .interview-card,
  .carousel-track.courses-grid > .course-card,
  .carousel-track.lectures-grid > .lecture-card,
  .carousel-track.ebooks-grid > .ebook-card,
  .carousel-track.videos-grid > .video-card { width: 78%; }
}

@media (max-width: 480px) {
  .carousel-track.books-grid > .book-card,
  .carousel-track.events-list > .event-item,
  .carousel-track.articles-grid > .article-card,
  .carousel-track.interviews-grid > .interview-card,
  .carousel-track.courses-grid > .course-card,
  .carousel-track.lectures-grid > .lecture-card,
  .carousel-track.ebooks-grid > .ebook-card,
  .carousel-track.videos-grid > .video-card { width: 85%; }
}

/* ─── Cards: cursor pointer (todos abrem o modal de detalhes) ── */
.book-card,
.event-item,
.article-card,
.interview-card,
.course-card,
.lecture-card,
.ebook-card {
  cursor: pointer;
}

/* ─── Badge "Novo" ─────────────────────────────────────────── */
.badge-new {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #ef4444;
  color: var(--white);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.book-card,
.article-card,
.interview-card,
.event-item,
.course-card,
.lecture-card,
.ebook-card { position: relative; }

/* ─── Modal de Detalhes ───────────────────────────────────── */
.details-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.details-modal.open {
  opacity: 1;
  pointer-events: all;
}

.details-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.92);
  cursor: pointer;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.details-modal-content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  background: var(--white);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.96) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.16,1,0.3,1);
}

.details-modal.open .details-modal-content {
  transform: scale(1) translateY(0);
}

.details-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  color: var(--gray-900);
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform 0.2s ease;
  border: none;
  cursor: pointer;
  line-height: 1;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.details-modal-close:hover {
  background: var(--white);
  transform: scale(1.06);
}

/* Corpo do modal — overflow scroll para conteúdo longo */
#details-body {
  overflow-y: auto;
  flex: 1;
}

#details-body::-webkit-scrollbar { width: 8px; }
#details-body::-webkit-scrollbar-track { background: var(--gray-100); }
#details-body::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 4px; }

/* Hero do modal de detalhes (imagem grande no topo) */
.details-hero {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--gray-100);
  overflow: hidden;
}
.details-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.details-hero.book-hero {
  aspect-ratio: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
}
.details-hero.book-hero img {
  width: auto;
  height: auto;
  max-width: 220px;
  max-height: 320px;
  object-fit: contain;
  box-shadow: 8px 16px 40px rgba(0,0,0,0.3);
}

.details-content {
  padding: 32px 36px 24px;
}

.details-category {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 10px;
}

.details-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.details-subtitle {
  font-size: 1.0625rem;
  color: var(--gray-600);
  font-style: italic;
  margin-bottom: 16px;
}

.details-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--gray-200);
}

.details-meta span { display: inline-flex; align-items: center; gap: 4px; }
.details-meta strong { color: var(--gray-700); font-weight: 600; }

.details-text {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--gray-700);
  white-space: pre-wrap;
}

.details-text p { margin-bottom: 14px; }
.details-text p:last-child { margin-bottom: 0; }

.details-cta {
  padding: 20px 36px;
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.details-cta .btn {
  background: var(--gray-900);
  color: var(--white);
  border: 1px solid var(--gray-900);
}
.details-cta .btn:hover {
  background: var(--gray-700);
  border-color: var(--gray-700);
}

/* Footer com share buttons — reaproveita estilo do video-modal */
.details-modal-share {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  background: var(--gray-900);
  border-top: 1px solid var(--gray-200);
  flex-wrap: wrap;
}

.details-modal-share .share-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-right: 4px;
}

.details-modal-share .share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 3px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.25);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.details-modal-share .share-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.details-modal-share .share-btn:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.45); }
.details-modal-share .share-whatsapp:hover { background: rgba(37,211,102,0.15); border-color: #25d366; color: #25d366; }
.details-modal-share .share-twitter:hover  { background: rgba(255,255,255,0.05); border-color: #fff; }
.details-modal-share .share-linkedin:hover { background: rgba(0,119,181,0.2); border-color: #0077b5; color: #5eb6e0; }

/* Responsivo do modal */
@media (max-width: 768px) {
  .details-modal { padding: 0; align-items: flex-end; }
  .details-modal-content {
    max-width: 100%;
    max-height: 95vh;
    border-radius: 12px 12px 0 0;
  }
  .details-content { padding: 24px 20px 18px; }
  .details-cta { padding: 16px 20px; }
  .details-modal-share {
    padding: 10px 14px;
    gap: 6px;
    overflow-x: auto;
    flex-wrap: nowrap;
  }
  .details-modal-share .share-btn {
    padding: 6px 10px;
    font-size: 0.75rem;
    flex-shrink: 0;
  }
  .details-modal-share .share-label { display: none; }
  .details-modal-close { top: 8px; right: 8px; }
}

/* Feedback do "Copiado!" */
.share-copied-feedback {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--gray-900);
  color: var(--white);
  padding: 12px 24px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.share-copied-feedback.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── About: foto alinhada ao topo ─────────────────────────── */
.about-photo {
  align-self: flex-start;
}
.about-photo img {
  object-position: center top;
}