/* ==========================================================================
   Design System — "Academic Excellence" (protótipo Stitch / DESIGN.md)
   Carregado em todas as páginas via _includes/head/custom.html.
   Tipografia: Source Serif 4 (títulos) + Hanken Grotesk (corpo).
   Cores: verde UnB (primary) + azul UnB (secondary) sobre off-white quente.
   Os estilos específicos de cada página ficam no <style> da própria página.
   ========================================================================== */

:root {
  /* Cor principal — Verde UnB */
  --primary: #004d2d;
  --primary-dark: #005230;
  --primary-container: #00683e;
  --primary-light: #0a6c42;

  /* Cor secundária — Azul UnB (links, datas, acentos) */
  --secondary: #355f97;

  /* Superfícies (tonal layers) */
  --background: #fbf9f8;
  --surface-lowest: #ffffff;
  --surface-low: #f5f3f3;
  --surface: #efeded;
  --surface-high: #eae8e7;
  --surface-highest: #e4e2e2;

  /* Texto */
  --foreground: #1b1c1c;
  --text-body: #3f4941;
  --text-secondary: #3f4941;
  --text-muted: #6f7a71;

  /* Bordas */
  --border: #bec9bf;
  --card-border: #e5e5e5;

  /* Chips/tags */
  --card-bg: #f0f0f0;

  /* Tipografia */
  --font-display: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-body: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

  /* Formas */
  --radius-sm: 0.125rem;
  --radius: 0.25rem;       /* botões, inputs, fotos */
  --radius-card: 0.5rem;   /* cards */
  --radius-pill: 9999px;   /* chips */

  /* Elevação única (ambient) */
  --shadow-ambient: 0 4px 20px rgba(0, 0, 0, 0.04);

  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, #004d2d 0%, #00683e 100%);
  --gradient-surface: linear-gradient(135deg, #f5f3f3 0%, #fbf9f8 100%);
}

/* --------------------------------------------------------------------------
   Base global — tipografia e fundo em todas as páginas
   -------------------------------------------------------------------------- */
body {
  font-family: var(--font-body);
  color: var(--foreground);
  background: var(--background);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--foreground);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Barra de navegação fixa
   -------------------------------------------------------------------------- */
.masthead {
  position: fixed !important;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--background) !important;
  border-bottom: 1px solid var(--border) !important;
}

.masthead__inner-wrap {
  max-width: 1140px !important;
  padding: 0 24px !important;
}

body { padding-top: 70px; }

.site-title {
  font-family: var(--font-display) !important;
  color: var(--primary) !important;
  font-weight: 700 !important;
}
.greedy-nav { background: transparent !important; }
.greedy-nav a { color: var(--text-body) !important; }
.greedy-nav a:hover { color: var(--primary) !important; }
.greedy-nav .visible-links a:before { background: var(--primary) !important; }

/* Menu hamburger */
.greedy-nav__toggle {
  display: block !important;
  visibility: visible !important;
}
.greedy-nav__toggle .navicon,
.greedy-nav__toggle .navicon::before,
.greedy-nav__toggle .navicon::after {
  background: var(--foreground) !important;
}
.greedy-nav__toggle:hover .navicon,
.greedy-nav__toggle:hover .navicon::before,
.greedy-nav__toggle:hover .navicon::after {
  background: var(--primary) !important;
}

/* Busca */
.search__toggle { color: var(--foreground) !important; }
.search__toggle:hover { color: var(--primary) !important; }
.search__toggle svg { fill: var(--foreground) !important; }
.search__toggle:hover svg { fill: var(--primary) !important; }

/* --------------------------------------------------------------------------
   Rodapé claro (tonal)
   -------------------------------------------------------------------------- */
.page__footer {
  background: var(--surface-low) !important;
  color: var(--text-body) !important;
  border-top: 1px solid var(--border);
}
.page__footer-follow,
.page__footer-copyright {
  max-width: 1140px !important;
  margin: 0 auto !important;
  padding: 0 24px !important;
}
.page__footer a { color: var(--primary) !important; }
.page__footer a:hover { color: var(--primary-container) !important; }
.page__footer-copyright { color: var(--text-muted) !important; }

/* --------------------------------------------------------------------------
   Conteúdo nas páginas de tema (single, posts, archive)
   -------------------------------------------------------------------------- */
.page__content a:not(.btn):not(.external-link) { color: var(--primary); }
.page__content a:not(.btn):not(.external-link):hover { color: var(--primary-container); }

/* --------------------------------------------------------------------------
   Estrutura de página — grid fixo 1140px, gutter 24px (32 tablet / 20 mobile)
   -------------------------------------------------------------------------- */
#main {
  max-width: 1140px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* Listagens (.archive) ocupam toda a largura do container — o tema reserva
   uma coluna à direita por padrão, o que desalinhava as margens */
.archive {
  float: none !important;
  width: 100% !important;
  padding-right: 0 !important;
}

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.max-w-6xl { max-width: 1140px; margin: 0 auto; }

.page-wrapper {
  font-family: var(--font-body);
  background: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  margin: -2rem;
}

.page-wrapper h1, .page-wrapper h2, .page-wrapper h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  color: var(--foreground);
}

/* Hero padrão das páginas internas */
.page-hero {
  background: var(--surface-low);
  padding: 80px 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  font-size: 2.5rem;
  letter-spacing: -0.01em;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--foreground);
}

.page-hero p {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-body);
  max-width: 600px;
  margin: 0 auto;
}

/* Fotos de perfil: retangulares com cantos 4px (nunca circulares) */
.page-hero img,
.hero-photo img {
  border-radius: var(--radius) !important;
}

/* Seções — ritmo vertical 80px desktop / 40px mobile */
.section { padding: 80px 0; }

.section-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.section-line {
  height: 1px;
  width: 5rem;
  background: var(--secondary);
  border-radius: 0;
}

.section-label {
  color: var(--secondary);
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.4;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 1.5rem;
  color: var(--foreground);
}

.section-desc {
  color: var(--text-body);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 2rem;
  max-width: 800px;
}

/* Botões de link externo — sólidos, 4px, sem "lift" */
.external-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.external-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary);
  color: white !important;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius);
  text-decoration: none !important;
  font-weight: 700;
  transition: background-color 0.2s ease;
}

.external-link:hover {
  background: var(--primary-container);
  color: white !important;
}

/* --------------------------------------------------------------------------
   Pele dos cards — fundo branco, borda 1px, raio 8px, hover tonal
   (sobrepõe os estilos legados definidos em cada página)
   -------------------------------------------------------------------------- */
.pub-card, .link-card, .skill-card, .student-card, .reading-card,
.methodology-card, .semester-card, .highlight-card, .participation-item,
.project-card, .course-card, .other-course-card, .rg-card,
.responsive-project-card, .contact-box, .research-card,
.cta-section, .translation-highlight {
  border-radius: var(--radius-card) !important;
}

.pub-card, .link-card, .skill-card, .student-card, .reading-card,
.methodology-card, .semester-card, .highlight-card, .participation-item,
.project-card, .course-card, .rg-card, .responsive-project-card {
  background: var(--surface-lowest);
  border: 1px solid var(--card-border) !important;
  box-shadow: none !important;
}

.pub-card:hover, .link-card:hover, .skill-card:hover, .student-card:hover,
.reading-card:hover, .methodology-card:hover, .semester-card:hover,
.highlight-card:hover, .participation-item:hover, .project-card:hover,
.course-card:hover, .rg-card:hover, .responsive-project-card:hover {
  border-color: var(--primary) !important;
  box-shadow: var(--shadow-ambient) !important;
  transform: none !important;
}

/* Acentos laterais preservados sobre a borda padrão */
.rg-card { border-left: 4px solid var(--primary) !important; }
.pub-card.highlight { border-left: 4px solid var(--primary) !important; }

/* Cards de listagem de projetos (_includes/archive-single.html) */
.responsive-project-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 20px;
  padding: 20px;
  transition: all 0.3s ease;
  overflow: hidden;
}

.project-thumbnail {
  flex-shrink: 0;
  width: 200px;
}

.project-thumbnail img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
}

.project-content {
  flex-grow: 1;
  min-width: 0;
}

.project-title {
  margin: 0 0 10px 0;
  font-size: 1.5rem;
  line-height: 1.3;
}

.project-title a {
  color: var(--foreground);
  text-decoration: none;
  transition: color 0.2s ease;
}

.project-title a:hover {
  color: var(--primary);
}

.project-meta {
  font-size: 0.875rem;
  color: var(--secondary);
  margin-bottom: 10px;
}

.project-excerpt {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-body);
  margin: 0;
}

@media (max-width: 768px) {
  .responsive-project-card { flex-direction: column; gap: 15px; padding: 15px; }
  .project-thumbnail { width: 100%; max-width: 300px; align-self: center; }
  .project-title { font-size: 1.25rem; text-align: center; }
  .project-meta { text-align: center; }
  .project-excerpt { text-align: left; }
}

@media (max-width: 480px) {
  .responsive-project-card { padding: 12px; gap: 12px; }
  .project-title { font-size: 1.1rem; }
  .project-meta, .project-excerpt { font-size: 0.8rem; }
  .project-thumbnail { max-width: 250px; }
}

/* --------------------------------------------------------------------------
   Responsivo - Mobile First
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  #main { padding-left: 20px; padding-right: 20px; }
  .page-wrapper { margin: -1rem; }
  .container { padding: 0 20px; }
  .page-hero { padding: 40px 0; }
  .page-hero h1 { font-size: 1.75rem; }
  .page-hero p { font-size: 1rem; }
  .section { padding: 40px 0; }
  .section-title { font-size: 1.5rem; }
  .section-desc { font-size: 0.95rem; }
  .external-links { flex-direction: column; align-items: stretch; gap: 0.75rem; }
  .external-link { justify-content: center; padding: 0.6rem 1rem; font-size: 0.9rem; }
}

@media (min-width: 481px) and (max-width: 768px) {
  #main { padding-left: 32px; padding-right: 32px; }
  .container { padding: 0 32px; }
  .page-wrapper { margin: -1.5rem; }
  .page-hero { padding: 48px 0; }
  .page-hero h1 { font-size: 2rem; }
  .section { padding: 40px 0; }
  .section-title { font-size: 1.75rem; }
  .external-links { flex-direction: column; align-items: center; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  #main { padding-left: 32px; padding-right: 32px; }
  .container { padding: 0 32px; }
  .page-hero h1 { font-size: 2.25rem; }
  .section { padding: 64px 0; }
}