/* ==========================================================================
   GEPEDEM - Grupo de Estudos e Pesquisa em Espaço e Democracia (UnB)
   Design System: Minimalista, Geométrico e Monocromático (Preto & Branco)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette - Monochrome High Contrast */
  --bg-primary: #ffffff;
  --bg-secondary: #f6f6f6;
  --bg-subtle: #efefef;
  --bg-dark: #0a0a0a;
  --bg-dark-secondary: #141414;
  
  --text-primary: #0a0a0a;
  --text-secondary: #4a4a4a;
  --text-muted: #767676;
  --text-inverse: #ffffff;
  --text-inverse-muted: #a3a3a3;
  
  --border-light: #e5e5e5;
  --border-medium: #1a1a1a;
  --border-strong: #000000;
  
  --accent-black: #000000;
  --accent-white: #ffffff;
  
  /* Typography */
  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  
  /* Layout & Grid */
  --container-max: 1240px;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Geometric Grid Background Pattern */
.bg-grid-pattern {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.04) 1px, transparent 1px);
}

.bg-grid-pattern-dark {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.3rem, 4.8vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.2vw, 1.8rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-fast);
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: var(--space-2xl) 0;
  position: relative;
  border-bottom: 1px solid var(--border-light);
}

.section-dark {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  border-bottom: 1px solid var(--border-medium);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--text-inverse);
}

.section-dark p {
  color: var(--text-inverse-muted);
}

/* Geometric Header Badge */
.geo-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border-strong);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background-color: var(--bg-primary);
  margin-bottom: 1.25rem;
}

.geo-tag-dark {
  border-color: var(--text-inverse);
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

.geo-square {
  width: 8px;
  height: 8px;
  background-color: var(--accent-black);
  display: inline-block;
}

.geo-tag-dark .geo-square {
  background-color: var(--accent-white);
}

/* Navbar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--border-strong);
  transition: transform var(--transition-fast);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 85px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%) contrast(120%);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  line-height: 1;
}

.brand-subtitle {
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-top: 3px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.25rem;
}

.nav-item a {
  position: relative;
  display: block;
  padding: 0.5rem 1.1rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.nav-item a:hover {
  background-color: var(--bg-secondary);
  border-color: var(--border-light);
}

.nav-item a.active {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  border-color: var(--bg-dark);
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  width: 44px;
  height: 44px;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  justify-content: space-between;
}

.mobile-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--accent-black);
  transition: all var(--transition-fast);
}

/* Buttons & Interactive Elements */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.9rem 1.8rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 2px solid var(--border-strong);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-primary {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  border-color: var(--bg-dark);
}

.btn-primary:hover {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--border-strong);
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0px var(--accent-black);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0px var(--accent-black);
}

.btn-light {
  background-color: var(--accent-white);
  color: var(--bg-dark);
  border-color: var(--accent-white);
}

.btn-light:hover {
  background-color: transparent;
  color: var(--accent-white);
  border-color: var(--accent-white);
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0px var(--accent-white);
}

/* Geometric Card Component */
.geo-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-strong);
  padding: 2rem;
  position: relative;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.geo-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 0 20px 20px 0;
  border-color: transparent var(--border-strong) transparent transparent;
}

.geo-card:hover {
  transform: translateY(-4px);
  box-shadow: 6px 6px 0px var(--accent-black);
}

.geo-card-num {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--border-light);
  line-height: 1;
  margin-bottom: 1rem;
}

.geo-card:hover .geo-card-num {
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero-content h1 {
  margin-bottom: 1.5rem;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-graphic {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.geo-frame {
  position: relative;
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1 / 1;
  border: 2px solid var(--border-strong);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-secondary);
  padding: 2rem;
}

.geo-frame::after {
  content: '';
  position: absolute;
  inset: -12px;
  border: 1px dashed var(--border-strong);
  border-radius: 50%;
  pointer-events: none;
}

.geo-frame img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
  filter: grayscale(100%) contrast(120%);
  transition: filter var(--transition-fast);
}

.geo-frame:hover img {
  filter: grayscale(0%);
}

/* Section Headers */
.section-header {
  margin-bottom: 3.5rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 2px solid var(--border-strong);
  padding-bottom: 1.5rem;
}

.section-dark .section-header {
  border-bottom-color: var(--text-inverse);
}

.section-title-wrap {
  max-width: 700px;
}

.section-subtitle {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* Abordagem & Pilares */
.pillar-icon {
  width: 48px;
  height: 48px;
  border: 2px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
}

/* Linhas de Pesquisa */
.research-card {
  border: 1px solid var(--border-strong);
  padding: 2rem;
  background-color: var(--bg-primary);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.research-card:hover {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

.research-card:hover h3,
.research-card:hover p {
  color: var(--text-inverse);
}

.research-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.research-badge {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--border-strong);
}

.research-card:hover .research-badge {
  border-color: var(--text-inverse);
}

/* Metrics Counter Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 2px solid var(--border-strong);
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

.metric-item {
  padding: 2.5rem 1.5rem;
  text-align: center;
  border-right: 1px solid var(--border-medium);
}

.metric-item:last-child {
  border-right: none;
}

.metric-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.metric-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-inverse-muted);
}

/* Pesquisadores Page Components */
.filter-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  border-bottom: 2px solid var(--border-strong);
  padding-bottom: 1rem;
}

.tab-btn {
  padding: 0.65rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  border-color: var(--border-strong);
}

.tab-btn.active {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  border-color: var(--bg-dark);
}

.search-box {
  position: relative;
  margin-bottom: 2.5rem;
}

.search-input {
  width: 100%;
  padding: 1.1rem 1.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 2px solid var(--border-strong);
  background-color: var(--bg-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  box-shadow: 4px 4px 0px var(--accent-black);
}

.researcher-card {
  border: 1px solid var(--border-strong);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background-color: var(--bg-primary);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.researcher-card:hover {
  transform: translateY(-2px);
  box-shadow: 4px 4px 0px var(--accent-black);
}

/* Researcher Modal Component */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-container {
  background-color: var(--bg-primary);
  border: 2px solid var(--border-strong);
  max-width: 650px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
  box-shadow: 8px 8px 0px var(--accent-black);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 38px;
  height: 38px;
  border: 2px solid var(--border-strong);
  background: var(--bg-primary);
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

/* Document Viewer Modal (Teses e Dissertações) */
.modal-container-large {
  background-color: var(--bg-primary);
  border: 2px solid var(--border-strong);
  max-width: 1200px;
  width: 92vw;
  height: 88vh;
  max-height: 88vh;
  padding: 1.5rem;
  position: relative;
  box-shadow: 8px 8px 0px var(--accent-black);
  display: flex;
  flex-direction: column;
}

.modal-doc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 1rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid var(--border-strong);
  padding-right: 3rem;
  gap: 1rem;
}

.modal-doc-header-info {
  overflow: hidden;
}

.modal-doc-header h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0;
  color: var(--text-primary);
  line-height: 1.3;
}

.modal-doc-header .doc-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  padding: 0.2rem 0.5rem;
  margin-bottom: 0.35rem;
}

.modal-doc-body {
  flex: 1;
  width: 100%;
  height: 100%;
  min-height: 0;
  background-color: #f1f3f4;
  border: 1px solid var(--border-medium);
  position: relative;
}

.modal-doc-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

@media (max-width: 768px) {
  .modal-container-large {
    width: 96vw;
    height: 92vh;
    padding: 1rem;
  }
  .modal-doc-header {
    flex-direction: column;
    align-items: flex-start;
    padding-right: 2.5rem;
    gap: 0.5rem;
  }
}

.avatar-geo {
  width: 56px;
  height: 56px;
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.researcher-info h4 {
  font-size: 1.1rem;
  margin-bottom: 0.2rem;
}

.researcher-role {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  font-weight: 600;
}

.researcher-inst {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Biblioteca Page Components */
.pub-item {
  border: 1px solid var(--border-strong);
  padding: 1.75rem;
  margin-bottom: 1.25rem;
  background-color: var(--bg-primary);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  transition: all var(--transition-fast);
}

.pub-item:hover {
  box-shadow: 4px 4px 0px var(--accent-black);
}

.pub-item .btn {
  white-space: nowrap !important;
  flex-shrink: 0 !important;
  align-self: flex-start;
}

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

.pub-content h4 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.pub-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.pub-tag {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-light);
  padding: 0.15rem 0.5rem;
  font-size: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 600;
}

/* Contato Page Components */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3.5rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.info-block {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.info-icon-box {
  width: 44px;
  height: 44px;
  border: 2px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  flex-shrink: 0;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 1rem 1.25rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 2px solid var(--border-strong);
  background-color: var(--bg-primary);
  outline: none;
  transition: all var(--transition-fast);
}

.form-control:focus {
  box-shadow: 4px 4px 0px var(--accent-black);
}

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

/* Toast & Alert */
.toast-msg {
  display: none;
  padding: 1.25rem 1.5rem;
  border: 2px solid var(--border-strong);
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  font-family: var(--font-heading);
  margin-top: 1.5rem;
  align-items: center;
  gap: 0.75rem;
}

/* Footer */
.site-footer {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  padding: 4rem 0 2rem;
  border-top: 2px solid var(--border-medium);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-inverse-muted);
  max-width: 320px;
  font-size: 0.9rem;
  margin-top: 1rem;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-inverse);
  margin-bottom: 1.25rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--accent-white);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-inverse-muted);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-inverse);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--border-medium);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-inverse-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================
   BLOG STYLES & COMPONENTS
   ========================================== */
.blog-featured-card {
  background-color: var(--bg-primary);
  border: 2px solid var(--border-strong);
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  overflow: hidden;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.blog-featured-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

.blog-featured-graphic {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.blog-featured-graphic::before {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  transform: rotate(45deg);
  pointer-events: none;
}

.blog-featured-body {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.blog-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border-strong);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  width: fit-content;
}

.blog-badge-dark {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
  border-color: var(--text-inverse);
}

.blog-badge-accent {
  background-color: var(--accent-black);
  color: var(--accent-white);
  border-color: var(--accent-black);
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
}

.blog-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.blog-card {
  background-color: var(--bg-primary);
  border: 1.5px solid var(--border-strong);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
  border-color: var(--accent-black);
}

.blog-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.blog-card-title {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.blog-card-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.blog-card-title a:hover {
  text-decoration: underline;
}

.blog-card-excerpt {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.blog-card-footer {
  border-top: 1px dashed var(--border-light);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.blog-author {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Blog Filter & Controls */
.blog-filter-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.blog-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.blog-tab-btn {
  padding: 0.6rem 1.25rem;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.blog-tab-btn:hover,
.blog-tab-btn.active {
  background-color: var(--accent-black);
  color: var(--accent-white);
}

.blog-search-box {
  position: relative;
  min-width: 280px;
}

.blog-search-input {
  width: 100%;
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  border: 1px solid var(--border-strong);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--transition-fast);
}

.blog-search-input:focus {
  border-color: var(--accent-black);
  box-shadow: 0 0 0 2px rgba(0,0,0,0.1);
}

.blog-search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Article Reading Page Typography */
.article-header {
  max-width: 840px;
  margin: 0 auto 3rem auto;
  text-align: center;
}

.article-category {
  margin-bottom: 1rem;
}

.article-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.article-lead {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.article-meta-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 1rem 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
  flex-wrap: wrap;
}

.article-body-wrapper {
  max-width: 760px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-body-wrapper h2 {
  font-size: 1.8rem;
  margin: 2.5rem 0 1.25rem 0;
}

.article-body-wrapper h3 {
  font-size: 1.4rem;
  margin: 2rem 0 1rem 0;
}

.article-body-wrapper p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.article-body-wrapper blockquote {
  border-left: 4px solid var(--accent-black);
  padding: 1.25rem 1.75rem;
  margin: 2rem 0;
  background-color: var(--bg-secondary);
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.7;
}

.article-body-wrapper ul,
.article-body-wrapper ol {
  margin: 1.5rem 0 1.5rem 2rem;
}

.article-body-wrapper li {
  margin-bottom: 0.75rem;
}

.article-author-box {
  margin-top: 4rem;
  padding: 2rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-strong);
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.article-author-avatar {
  width: 70px;
  height: 70px;
  background-color: var(--accent-black);
  color: var(--accent-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.article-author-info h4 {
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}

.article-author-info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .blog-featured-card {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);

  }
  
  .metric-item:nth-child(2) {
    border-right: none;
  }
  
  .metric-item {
    border-bottom: 1px solid var(--border-medium);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 85px;
    left: 0;
    width: 100%;
    background-color: var(--bg-primary);
    border-bottom: 2px solid var(--border-strong);
    flex-direction: column;
    padding: 1rem;
    gap: 0.5rem;
  }
  
  .nav-links.active {
    display: flex;
  }

  .mobile-toggle {
    display: flex;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }
  
  .metric-item {
    border-right: none;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .pub-item {
    flex-direction: column;
    gap: 1.25rem;
  }

  .pub-item .btn {
    align-self: flex-start;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
}