/* ==========================================================================
   Header, Navigation & Components - Inspired by image.png
   ========================================================================== */

/* Header Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--bg-dark-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background-color var(--transition-normal);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--text-white);
  cursor: pointer;
}

.brand-monogram {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--gold-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--gold-primary);
  background: rgba(12, 24, 37, 0.8);
}

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

.brand-name {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-white);
  line-height: 1.1;
}

.brand-title {
  font-size: 0.68rem;
  color: var(--text-muted-light);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-white);
  opacity: 0.85;
  padding: 0.5rem 0;
  position: relative;
  cursor: pointer;
}

.nav-link:hover, .nav-link.active {
  opacity: 1;
  color: var(--gold-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--gold-primary);
}

/* Header Buttons */
.btn-gold {
  background-color: var(--gold-primary);
  color: var(--bg-dark-primary);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
  background-color: var(--gold-hover);
  transform: translateY(-1px);
}

.btn-outline-gold {
  background-color: transparent;
  border: 1px solid var(--gold-primary);
  color: var(--gold-primary);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.btn-outline-gold:hover {
  background-color: var(--gold-primary);
  color: var(--bg-dark-primary);
}

.btn-outline-white {
  background-color: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: var(--text-white);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.btn-outline-white:hover {
  border-color: var(--text-white);
  background: rgba(255, 255, 255, 0.1);
}

/* Hero Section (Matching image.png) */
.hero-section {
  position: relative;
  min-height: 88vh;
  background-color: var(--bg-dark-primary);
  color: var(--text-white);
  padding-top: calc(var(--header-height) + 3rem);
  padding-bottom: 4rem;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  background-size: cover;
  background-position: center top;
  opacity: 0.35;
  mask-image: linear-gradient(to right, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 40%);
  -webkit-mask-image: linear-gradient(to right, rgba(0,0,0,0) 0%, rgba(0,0,0,1) 40%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-size: 3rem;
  line-height: 1.15;
  letter-spacing: 1.5px;
  margin-bottom: 1.25rem;
  color: var(--text-white);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted-light);
  margin-bottom: 2.5rem;
  max-width: 520px;
  font-weight: 300;
}

.hero-features {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.feature-pill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-white);
}

.feature-pill svg {
  width: 28px;
  height: 28px;
  stroke: var(--gold-primary);
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.hero-portrait-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--border-dark);
}

.hero-portrait-card img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  object-position: center 20%;
}

.portrait-badge {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  background: rgba(12, 24, 37, 0.92);
  backdrop-filter: blur(8px);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--gold-primary);
}

.portrait-badge-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-white);
}

.portrait-badge-sub {
  font-size: 0.8rem;
  color: var(--gold-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Subpage Control */
.subpage {
  display: none;
  animation: fadeIn 0.4s ease-in-out;
}

.subpage.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Solutions Grid / Specialties (Home & Dedicated Page) */
.solutions-section {
  background-color: var(--bg-light-secondary);
  padding: 5rem 0;
}

.specialties-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.specialty-card {
  background: var(--bg-light-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 2rem 1.25rem;
  text-align: center;
  transition: all var(--transition-normal);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.specialty-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card);
  border-color: var(--gold-primary);
}

.specialty-icon {
  width: 54px;
  height: 54px;
  margin-bottom: 1rem;
  color: var(--gold-primary);
}

.specialty-title {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dark-primary);
}

/* About Section 3-Column Layout (Matching image.png) */
.about-section {
  padding: 5rem 0;
  background-color: var(--bg-light-primary);
}

.about-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1.1fr 1fr;
  gap: 2rem;
  align-items: stretch;
}

.about-col-bio {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.about-col-bio h2 {
  font-size: 1.8rem;
  margin-bottom: 1.25rem;
  color: var(--text-dark-primary);
}

.about-col-bio p {
  color: var(--text-dark-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.about-col-image {
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.about-col-image img {
  width: 100%;
  height: 100%;
  min-height: 380px;
  object-fit: cover;
}

.about-col-contact {
  background-color: var(--bg-dark-primary);
  color: var(--text-white);
  border-radius: var(--radius-sm);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid var(--border-dark);
}

.contact-box-title {
  font-size: 1.3rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: var(--text-white);
}

.contact-box-subtitle {
  font-size: 0.9rem;
  color: var(--text-muted-light);
  margin-bottom: 2rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.9rem;
  color: var(--text-white);
}

.contact-info-item svg {
  width: 20px;
  height: 20px;
  stroke: var(--gold-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Blog Section */
.blog-section {
  padding: 5rem 0;
  background-color: var(--bg-light-secondary);
}

.blog-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.category-pills {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.pill-btn {
  padding: 0.5rem 1.2rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: var(--radius-full);
  background: var(--bg-light-primary);
  border: 1px solid var(--border-light);
  color: var(--text-dark-secondary);
  transition: all var(--transition-fast);
}

.pill-btn:hover, .pill-btn.active {
  background: var(--gold-primary);
  color: var(--bg-dark-primary);
  border-color: var(--gold-primary);
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-light-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.8rem;
  width: 280px;
}

.search-box input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-dark-primary);
  padding-left: 0.5rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.blog-card {
  background: var(--bg-light-primary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.blog-card-img {
  height: 200px;
  width: 100%;
  object-fit: cover;
}

.blog-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--gold-primary);
  margin-bottom: 0.5rem;
}

.blog-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-dark-primary);
  line-height: 1.35;
}

.blog-excerpt {
  font-size: 0.88rem;
  color: var(--text-dark-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
  flex-grow: 1;
}

.blog-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-light);
  padding-top: 1rem;
  font-size: 0.78rem;
  color: var(--text-dark-secondary);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(12, 24, 37, 0.85);
  backdrop-filter: blur(5px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--bg-light-primary);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  position: relative;
  padding: 2.5rem;
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 1.5rem;
  color: var(--text-dark-secondary);
  cursor: pointer;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-light-secondary);
}

/* Footer */
.site-footer {
  background-color: var(--bg-dark-primary);
  color: var(--text-white);
  padding: 4rem 0 2rem 0;
  border-top: 1px solid var(--border-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-col h4 {
  font-size: 1rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--gold-primary);
  margin-bottom: 1.25rem;
}

.footer-col p, .footer-col ul {
  font-size: 0.88rem;
  color: var(--text-muted-light);
  line-height: 1.7;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.6rem;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 2rem;
  font-size: 0.8rem;
  color: var(--text-muted-light);
}

/* Mobile Toggle Button */
.mobile-toggle-btn {
  display: none;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--gold-primary);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.mobile-toggle-btn:hover, .mobile-toggle-btn.active {
  background: var(--gold-primary);
  color: var(--bg-dark-primary);
  border-color: var(--gold-primary);
}

/* Responsive Media Queries (Mobile & Small Screen Priority) */
@media (max-width: 992px) {
  :root {
    --header-height: 70px;
  }

  .container {
    padding: 0 1.25rem;
  }

  .site-header {
    height: var(--header-height);
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .brand-title {
    font-size: 0.6rem;
  }

  .mobile-toggle-btn {
    display: flex;
  }

  #header-cta-btn {
    display: none; /* Hide large header button on mobile nav bar */
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: rgba(12, 24, 37, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 2.5rem 1.5rem;
    gap: 1.5rem;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.35s ease-in-out;
    border-bottom: 2px solid var(--gold-primary);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    z-index: 999;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    font-size: 1.1rem;
    padding: 0.75rem 1.5rem;
    width: 100%;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .hero-section {
    min-height: auto;
    padding-top: calc(var(--header-height) + 2rem);
    padding-bottom: 3rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-content h1 {
    font-size: 2.25rem;
    line-height: 1.2;
  }

  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 1.75rem;
  }

  .hero-portrait-card img {
    height: 380px;
  }

  .about-grid-3 {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-col-image img {
    min-height: 260px;
    height: 260px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .section-padding {
    padding: 3rem 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .section-subtitle {
    font-size: 0.9rem;
    margin-bottom: 2rem;
  }

  .hero-features {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
  }

  .hero-cta-group .btn-gold,
  .hero-cta-group .btn-outline-white {
    width: 100%;
    justify-content: center;
  }

  .blog-controls {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }

  .search-box {
    width: 100%;
  }

  .category-pills {
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
  }

  .pill-btn {
    flex-shrink: 0;
  }

  .blog-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .modal-content {
    padding: 1.5rem 1.25rem;
    width: 95%;
    max-height: 92vh;
    border-radius: var(--radius-sm);
  }

  /* Admin forms & tab buttons mobile responsiveness */
  .dash-tab-nav {
    display: flex;
    overflow-x: auto;
    white-space: nowrap;
    gap: 0.5rem;
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
    -webkit-overflow-scrolling: touch;
  }

  .dash-tab-btn {
    flex-shrink: 0;
    padding: 0.5rem 0.85rem;
    font-size: 0.8rem;
  }

  /* All multi-column admin forms collapse to 1 column on mobile */
  #tab-info form > div[style*="grid-template-columns"],
  #tab-about form > div[style*="grid-template-columns"],
  .research-line-item > div[style*="grid-template-columns"],
  .social-link-item > div[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
    gap: 0.75rem !important;
  }
}

@media (max-width: 576px) {
  .hero-content h1 {
    font-size: 1.75rem;
  }

  .hero-portrait-card img {
    height: 280px;
  }

  .portrait-badge {
    bottom: 0.85rem;
    left: 0.85rem;
    right: 0.85rem;
    padding: 0.75rem 1rem;
  }

  .specialties-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  .specialty-card {
    padding: 1.25rem 0.6rem;
  }

  .specialty-icon {
    width: 38px;
    height: 38px;
    margin-bottom: 0.5rem;
  }

  .specialty-title {
    font-size: 0.78rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .site-footer {
    padding: 2.5rem 0 1.5rem 0;
  }

  /* Dedicated #page-sobre responsive tweaks */
  #page-sobre div[style*="grid-template-columns: 1fr 2fr"],
  #page-sobre div[style*="grid-template-columns: 2fr 1fr"] {
    grid-template-columns: 1fr !important;
    gap: 1.5rem !important;
  }

  #about-page-img {
    height: 200px !important;
  }

  #about-research-container {
    grid-template-columns: 1fr !important;
  }
}


/* Embedded Media in Articles (YouTube & Images) */
.article-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  margin: 1.25rem 0;
  box-shadow: var(--shadow-card);
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  margin: 1.5rem 0;
  border-radius: var(--radius-sm);
  background: #000;
  box-shadow: var(--shadow-card);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}