/* =====================================================
   VARIÁVEIS GLOBAIS
===================================================== */
:root {
  --bg: #ffffff;
  --alt: #f8f9fb;

  --text-primary: #0b132b;
  --text-secondary: #6b7280;
  --body: #1f2937;

  --accent: #1e3a8a;

  --max-width: 1200px;
  --page-gutter: clamp(3rem, 8vw, 6rem);
  --menu-height: 72px;

  /* baseline editorial */
  --baseline: 0.5rem;

  /* motion */
  --motion-fast: 0.15s ease;
  --motion-base: 0.2s ease;
  --motion-slow: 0.25s ease;

  /* ícones */
  --icon-size: 22px;
}

/* =====================================================
   RESET
===================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: Inter, sans-serif;
  color: var(--body);
  background: var(--bg);
  line-height: 1.75;
  padding-top: var(--menu-height);
}

/* =====================================================
   CONTAINER
===================================================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--page-gutter);
  padding-right: var(--page-gutter);
}

/* =====================================================
   LINKS & FOCO (WCAG)
===================================================== */
a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =====================================================
   SKIP LINK
===================================================== */
.skip-link {
  position: absolute;
  top: -40px;
  left: 1rem;
  background: #fff;
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  z-index: 2000;
}

.skip-link:focus {
  top: 1rem;
}

/* =====================================================
   MENU
===================================================== */
.menu-global {
  position: fixed;
  top: 0;
  width: 100%;
  height: var(--menu-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
  z-index: 1000;
}

.menu-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.menu-brand {
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--text-primary);
}

.menu-links {
  list-style: none;
  display: flex;
  gap: 1.6rem;
}

/*.menu-links {
  list-style: none;
  display: flex;
  gap: 1.6rem;
  margin: 0;
  padding: 0;
}*/

.menu-links a {
  color: var(--text-primary);
  font-weight: 500;
  text-decoration: none;
}

.menu-links a:hover {
  text-decoration: underline;
}

/* =====================================================
   HERO
===================================================== */
.hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-inner {
  position: relative;
  height: 100%;
  display: flex;
  align-items: flex-end;
}

.hero-content {
  padding-bottom: clamp(6rem, 14vh, 10rem);
  max-width: 720px;
  color: #f2f4f6;
}

.hero h1 {
  font-size: clamp(3rem, 5vw, 4.5rem);
  line-height: 1.08;
  font-weight: 500;
  margin-bottom: calc(var(--baseline) * 3);
}

.hero p {
  font-size: 1.25rem;
  opacity: 0.85;
}

/* =====================================================
   ASSINATURA
===================================================== */
.assinatura {
  padding: 2.5rem 0 1.5rem;
}

.assinatura .container {
  display: flex;
  gap: 0.4rem;
  font-family: "Source Serif 4", serif;
  font-size: clamp(1.8rem, 3vw, 2.2rem);
  font-weight: 500;
  color: var(--text-primary);
}

/* =====================================================
   SEÇÕES
===================================================== */
.section {
  padding: calc(var(--baseline) * 9) 0;
  scroll-margin-top: var(--menu-height);
}

.section-alt {
  background: var(--alt);
}

.section-title {
  font-family: "Source Serif 4", serif;
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: calc(var(--baseline) * 4);
}

/* =====================================================
   TEXTO
===================================================== */
p + p {
  margin-top: calc(var(--baseline) * 3);
}

/* =====================================================
   DISCIPLINAS
===================================================== */
.disciplinas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.disciplina-card {
  background: #fff;
  padding: 1.6rem;
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
  transition: transform var(--motion-base);
}

.disciplina-card:hover {
  transform: translateY(-4px);
}
.disciplina-card a {
  display: block;
  color: inherit;
  text-decoration: none;
}


/* =====================================================
   LIVROS
===================================================== */
.livros-grade {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2.4rem;
  justify-items: center;
}

.livro-frame {
  height: 300px;
  display: flex;
}

.livro-capa {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--motion-slow);
}

.livros-grade a:hover .livro-capa {
  transform: scale(1.06);
}

/* compensação óptica — livro 3 */
.livros-grade a:nth-child(3) .livro-capa {
  transform: scale(1.06);
}

.livros-grade a:nth-child(3):hover .livro-capa {
  transform: scale(1.18);
}

/* =====================================================
   CONTATO
===================================================== */
.contato-nome {
  font-weight: 500;
  margin-bottom: calc(var(--baseline) * 1.5);
}

.contato-instituicao {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.contact-email {
  display: inline-block;
  margin-top: calc(var(--baseline) * 1);
  font-size: 0.95rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.contact-email:hover {
  text-decoration: underline;
}

/*
.contact-email a {
  color: inherit;
  text-decoration: none;
}

.contact-email a:hover {
  text-decoration: underline;
}*/

/* =====================================================
   LOGOS + LINHA
===================================================== */
.logos-institucionais {
  display: flex;
  gap: 32px;
  align-items: center;
  margin-top: calc(var(--baseline) * 4);
  padding-bottom: calc(var(--baseline) * 2);
  margin-bottom: calc(var(--baseline) * 1.5);
  position: relative;
}



/* --- REMOVER LINHA ENTRE LOGOMARCAS E EMAIL --- */
.logos-institucionais::after {
  display: none;
}

.logos-institucionais img {
  height: 48px;
  filter: grayscale(100%);
  opacity: 0.85;
  transition: transform var(--motion-base),
              opacity var(--motion-base),
              filter var(--motion-base);
}

.logos-institucionais img:hover {
  transform: translateY(-3px);
  filter: grayscale(0%);
  opacity: 1;
}

/* =====================================================
   FOOTER
===================================================== */
.footer {
  background: #070a0f;
}

.footer-inner {
  padding: 3.5rem 0 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.footer p {
  margin-top: 2.2rem;
  font-size: 0.9rem;
  color: #9ca3af;
}

/* =====================================================
   SOCIAL ICONS
===================================================== */
.social-icons {
  display: flex;
  gap: 1.2rem;
}

.social-link {
  display: inline-flex;
}

.social-link svg {
  width: var(--icon-size);
  height: var(--icon-size);
  color: #9aa0a6;
  transition: transform var(--motion-fast),
              color var(--motion-fast),
              opacity var(--motion-fast);
}

.social-link:hover svg {
  transform: translateY(-1px);
  color: #ffffff;
}

/* =====================================================
   REDUÇÃO DE MOTION (WCAG)
===================================================== */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    transform: none !important;
  }
}

/* =====================================================
   CORREÇÕES FINAIS — ÍCONES + CONTATO
===================================================== */
.academic-link {
  display: inline-flex;
  align-items: center;
}

.academic-link img,
.academic-link svg {
  width: var(--icon-size);
  height: var(--icon-size);
  filter: grayscale(100%) brightness(0.6);
  opacity: 0.9;
  transition:
    filter var(--motion-base),
    opacity var(--motion-base),
    transform var(--motion-fast);
}

.academic-link:hover img,
.academic-link:focus-visible img,
.academic-link:hover svg,
.academic-link:focus-visible svg {
  filter: none;
  opacity: 1;
  transform: translateY(-1px);
}


/* ORCID (SVG inline) */
.icon-orcid {
  width: 22px;
  height: 22px;
  display: block;
}