/* ============================================
   PREMIUM CORPORATE HEADER STYLES
   IGF LOGO + CONTENT AS ONE COHESIVE UNIT
   FULLY RESPONSIVE FOR ALL SCREEN SIZES
   ============================================ */

:root {
  --header-height: auto;
}

/* ===== BASE RESPONSIVE CONTAINER ===== */
.container-fluid {
  padding-left: clamp(12px, 3vw, 30px);
  padding-right: clamp(12px, 3vw, 30px);
  max-width: 1400px;
  margin: 0 auto;
}

/* ===== TOP BAR ===== */
.top-bar {
  background: #0a1620;
  color: #94a3b8;
  padding: clamp(8px, 1.5vh, 12px) 0;
  font-size: clamp(0.65rem, 1.2vw, 0.8rem);
}

.top-bar-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: clamp(10px, 2vw, 20px);
}

.top-contact {
  display: flex;
  gap: clamp(12px, 2vw, 24px);
  flex-wrap: wrap;
}

.top-contact span {
  display: inline-flex;
  align-items: center;
  gap: clamp(4px, 0.8vw, 8px);
}

.top-contact i {
  color: #2d7a9b;
  font-size: clamp(0.7rem, 1vw, 0.85rem);
}

.top-social {
  display: flex;
  gap: clamp(12px, 1.5vw, 18px);
}

.top-social a {
  color: #94a3b8;
  transition: var(--transition-fast);
  font-size: clamp(0.8rem, 1.1vw, 0.9rem);
}

.top-social a:hover {
  color: #2d7a9b;
}

/* ===== MAIN HEADER ===== */
.main-header {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  padding: clamp(16px, 3vh, 28px) 0;
  border-bottom: 1px solid var(--igf-gray-200);
}

.header-unit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(15px, 3vw, 40px);
}

/* ===== IGF LOGO ===== */
.igf-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.igf-logo img {
  height: clamp(45px, 7vh, 80px);
  width: auto;
  object-fit: contain;
  max-width: 100%;
}

/* ===== FOUNDATION CONTENT ===== */
.igf-content {
  flex: 1;
  text-align: center;
  min-width: 0; /* Prevents overflow */
}

.igf-content h1 {
  font-size: clamp(1.1rem, 3vw, 2.2rem);
  font-weight: 800;
  color: #0a3d62;
  letter-spacing: clamp(-0.3px, -0.5vw, -0.5px);
  margin-bottom: clamp(4px, 0.8vh, 10px);
  background: linear-gradient(135deg, #0a3d62 0%, #1e7e6c 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  word-break: break-word;
}

.igf-content p {
  font-size: clamp(0.7rem, 1.1vw, 0.9rem);
  color: #475569;
  margin-bottom: clamp(4px, 0.6vh, 8px);
  letter-spacing: clamp(0.2px, 0.3vw, 0.5px);
  word-break: break-word;
}

.igf-content .tagline {
  font-size: clamp(0.65rem, 0.9vw, 0.85rem);
  color: #1e7e6c;
  font-weight: 600;
  letter-spacing: clamp(0.3px, 0.5vw, 0.8px);
  text-transform: uppercase;
}

/* ===== ASSOCIATION BADGE ===== */
.association-badge {
  flex-shrink: 0;
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.association-badge span {
  display: block;
  font-size: clamp(0.55rem, 0.8vw, 0.75rem);
  color: #64748b;
  font-weight: 500;
  margin-bottom: clamp(3px, 0.5vh, 6px);
}

.association-badge img {
  height: clamp(32px, 5vh, 55px);
  width: auto;
  object-fit: contain;
  max-width: 100%;
}

/* ===== PARTNER STRIP ===== */
.partner-strip {
  background: var(--igf-white);
  border-top: 1px solid var(--igf-gray-200);
  border-bottom: 1px solid var(--igf-gray-200);
  padding: clamp(8px, 1.5vh, 16px) 0;
}

.partner-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: clamp(12px, 2vw, 30px);
}

.partner-logos img {
  height: clamp(24px, 4vh, 42px);
  width: auto;
  object-fit: contain;
  transition: var(--transition-fast);
  max-width: clamp(60px, 12vw, 120px);
}

.partner-logos img:hover {
  transform: scale(1.05);
}

/* ===== NAVIGATION ===== */
.navbar {
  background: var(--igf-white);
  padding: 8px 0;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

/* Sticky styling ONLY for mobile/tablet */
@media (max-width: 991px) {
  .navbar-scrolled {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
    z-index: 1030;
    animation: slideDown 0.3s ease;
    padding: 4px 0;
  }
}

/* ===== NAVBAR BRAND STYLING ===== */
.navbar-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: var(--transition-fast);
}

.navbar-logo-mobile {
  height: 40px;
  width: auto;
  border-radius: 6px;
}

.navbar-logo-scroll {
  height: 36px;
  width: auto;
  border-radius: 6px;
}

.navbar-brand-text {
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--igf-primary) 0%, var(--igf-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* On Desktop, hide scroll-brand until navbar is scrolled */
/* ===== DESKTOP NAVIGATION OPTIMIZATIONS (NO WRAP, NO STICKY) ===== */
@media (min-width: 992px) {
  .scroll-brand {
    display: none !important;
  }

  .navbar-nav {
    flex-wrap: nowrap !important;
  }

  .navbar-nav .nav-link {
    padding-left: clamp(4px, 0.75vw, 12px) !important;
    padding-right: clamp(4px, 0.75vw, 12px) !important;
    font-size: clamp(0.7rem, 0.85vw, 0.82rem) !important;
  }
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

.navbar-nav {
  padding: clamp(8px, 1.5vh, 14px) 0;
  flex-wrap: wrap;
  justify-content: center;
}

.navbar-nav .nav-link {
  font-weight: 600;
  font-size: clamp(0.7rem, 1.1vw, 0.9rem);
  color: var(--igf-gray-800);
  padding: clamp(6px, 1vh, 12px) clamp(10px, 1.5vw, 20px);
  transition: var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: clamp(0.2px, 0.3vw, 0.5px);
  white-space: nowrap;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: #1e7e6c;
}

.dropdown-menu {
  border: none;
  box-shadow: var(--shadow-lg);
  border-radius: 10px;
  padding: 10px 0;
  margin-top: 0;
  border-top: 3px solid #1e7e6c;
}

.dropdown-item {
  font-size: clamp(0.7rem, 0.9vw, 0.85rem);
  padding: clamp(6px, 0.8vh, 10px) clamp(16px, 2vw, 24px);
  font-weight: 500;
  transition: var(--transition-fast);
}

.dropdown-item:hover {
  background-color: #f1f5f9;
  color: #1e7e6c;
  padding-left: clamp(20px, 2.5vw, 28px);
}

/* Desktop: open dropdowns on hover */
@media (min-width: 992px) {
  .nav-item.dropdown:hover > .dropdown-menu {
    display: block;
    margin-top: 0;
  }
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* ===== LAPTOP & SMALL DESKTOP (1024px - 1366px) ===== */
@media (max-width: 1366px) and (min-width: 1025px) {
  .igf-content h1 {
    font-size: clamp(1.6rem, 2.5vw, 2rem);
  }

  .igf-logo img {
    height: clamp(60px, 6vh, 70px);
  }

  .association-badge img {
    height: clamp(40px, 4.5vh, 48px);
  }

  .partner-logos img {
    height: clamp(30px, 3.5vh, 38px);
  }
}

/* ===== TABLET LANDSCAPE (992px - 1024px) ===== */
@media (max-width: 1024px) {
  .header-unit {
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
  }

  .igf-content {
    order: 2;
    flex: 0 0 100%;
    padding: 0 10px;
  }

  .igf-logo {
    order: 1;
  }

  .association-badge {
    order: 3;
    text-align: center;
    align-items: center;
  }

  .igf-content h1 {
    font-size: clamp(1.4rem, 2.8vw, 1.8rem);
  }

  .navbar-nav .nav-link {
    padding: 8px 14px;
    font-size: 0.8rem;
  }
}

/* ===== TABLET PORTRAIT & MOBILE (Below 992px) ===== */
@media (max-width: 991px) {
  .top-bar,
  .main-header,
  .partner-strip {
    display: none !important;
  }

  .navbar {
    padding: 10px 0;
  }

  .navbar-nav {
    padding: 15px 0 10px 0;
  }

  .navbar-nav .nav-link {
    padding: 12px 16px;
    font-size: 0.9rem;
    text-align: left;
    border-bottom: 1px solid var(--igf-gray-100);
    white-space: normal;
  }

  .navbar-nav .nav-item:last-child .nav-link {
    border-bottom: none;
  }

  .dropdown-menu {
    display: none; /* Hidden by default on mobile */
    box-shadow: none;
    border-left: 2px solid var(--igf-accent);
    border-top: none;
    border-radius: 0;
    padding-left: 15px;
    margin-left: 10px;
    background: var(--igf-gray-50);
  }

  .dropdown-menu.show {
    display: block !important; /* Force display on mobile click */
  }

  .dropdown-item {
    font-size: 0.85rem;
    padding: 8px 12px;
  }

  .navbar-toggler {
    padding: 6px 10px;
    font-size: 1.1rem;
    border-color: var(--igf-gray-200);
    color: var(--igf-primary);
  }

  .navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(30, 126, 108, 0.15);
  }
}

/* ===== MOBILE LARGE (576px - 767px) ===== */
@media (max-width: 767px) {
/* Obsolete small screen media overrides removed as top-bar, main-header, and partner-strip are hidden < 992px */

/* ============================================
   HELPER CLASSES FOR EXTRA CONTROL
   ============================================ */

/* Hide on specific breakpoints if needed */
.d-none-xxs {
  display: inline-flex;
}

@media (max-width: 480px) {
  .d-none-xxs {
    display: none !important;
  }
}

/* Text truncation for long content */
.text-truncate-responsive {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .text-truncate-responsive {
    white-space: normal;
    word-break: break-word;
  }
}

/* Flex wrap helper */
.flex-wrap-responsive {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(8px, 1.5vw, 20px);
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .top-bar,
  .navbar {
    display: none !important;
  }

  .main-header {
    padding: 10px 0;
    border-bottom: 2px solid #0a3d62;
  }

  .igf-content h1 {
    color: #0a3d62 !important;
    -webkit-text-fill-color: #0a3d62 !important;
    background: none !important;
  }

  .partner-strip {
    border: 1px solid #e2e8f0;
  }
}