/* ==========================================================================
   ESN BELGIUM - COMPONENTS (CLEAN, MODERN & ELEGANT)
   ========================================================================== */

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.45rem;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1;
}

.btn-primary {
  background-color: var(--esn-cyan);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 174, 239, 0.25);
}

.btn-primary:hover {
  background-color: var(--esn-cyan-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 174, 239, 0.35);
}

.btn-outline {
  background-color: #ffffff;
  border-color: var(--border-dark);
  color: var(--text-main);
  box-shadow: var(--shadow-xs);
}

.btn-outline:hover {
  border-color: var(--esn-navy);
  color: var(--esn-navy);
  background-color: var(--bg-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn-navy {
  background-color: var(--esn-navy);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(27, 54, 93, 0.25);
}

.btn-navy:hover {
  background-color: var(--esn-navy-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(27, 54, 93, 0.35);
}

.btn-green {
  background-color: var(--esn-green);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(122, 193, 67, 0.25);
}

.btn-green:hover {
  background-color: var(--esn-green-dark);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(122, 193, 67, 0.35);
}

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: 0.84rem;
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   Navbar
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 5px;
  left: 0;
  right: 0;
  height: 80px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: all 0.2s ease;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1320px;
  padding: 0 2rem;
  position: relative;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
  z-index: 2;
}

.logo-wrapper img {
  height: 52px;
  width: auto;
  object-fit: contain;
  transition: transform 0.2s ease;
}

.logo-wrapper:hover img {
  transform: scale(1.02);
}

nav[aria-label="Main Navigation"] {
  display: contents;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  list-style: none;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: max-content;
  max-width: calc(100% - 240px);
  margin: 0;
  z-index: 1;
  white-space: nowrap;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-main);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: all 0.15s ease;
}

.nav-link:hover {
  color: var(--esn-cyan-dark);
  background-color: var(--esn-cyan-light);
}

.nav-link.active {
  color: var(--esn-cyan-dark);
  background-color: var(--esn-cyan-light);
  font-weight: 700;
}

/* Nav Dropdown Menu */
.nav-item-dropdown {
  position: relative;
  list-style: none;
  white-space: nowrap;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-main);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: all 0.15s ease;
  cursor: pointer;
  background: transparent;
  border: none;
  text-decoration: none;
}

.nav-dropdown-toggle:hover,
.nav-item-dropdown:hover .nav-dropdown-toggle {
  color: var(--esn-cyan-dark);
  background-color: var(--esn-cyan-light);
}

.nav-item-dropdown.active .nav-dropdown-toggle,
.nav-dropdown-toggle.active {
  color: var(--esn-cyan-dark);
  background-color: var(--esn-cyan-light);
  font-weight: 700;
}

.nav-dropdown-chevron {
  width: 12px;
  height: 12px;
  transition: transform 0.2s ease;
  color: currentColor;
}

.nav-item-dropdown:hover .nav-dropdown-chevron {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 175px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 0.45rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 100;
  list-style: none;
}

.nav-item-dropdown:hover .nav-dropdown-menu,
.nav-item-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(4px);
}

.nav-dropdown-link {
  display: flex;
  align-items: center;
  padding: 0.55rem 0.85rem;
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--esn-navy);
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.15s ease;
}

.nav-dropdown-link:hover {
  background: #f1f5f9;
  color: var(--esn-cyan-dark);
  transform: translateX(2px);
}

.nav-dropdown-link.active {
  background: var(--esn-cyan-light);
  color: var(--esn-cyan-dark);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   Animated Hamburger Menu Button
   -------------------------------------------------------------------------- */
.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  padding: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--esn-navy);
  transition: all 0.2s ease;
  z-index: 1001;
  outline: none;
}

.mobile-menu-btn:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.mobile-menu-btn:active {
  transform: scale(0.96);
}

.hamburger-box {
  width: 20px;
  height: 14px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--esn-navy);
  border-radius: 2px;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease, background-color 0.2s ease;
  transform-origin: center;
}

/* Morph Hamburger into ✕ on active state */
.mobile-menu-btn.active .bar-top {
  transform: translateY(6px) rotate(45deg);
}

.mobile-menu-btn.active .bar-mid {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-menu-btn.active .bar-bot {
  transform: translateY(-6px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   Mobile Backdrop Overlay & Scroll Lock
   -------------------------------------------------------------------------- */
.nav-backdrop-overlay {
  position: fixed;
  top: 75px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s ease;
  z-index: 998;
}

.nav-backdrop-overlay.active {
  opacity: 1;
  visibility: visible;
}

body.mobile-nav-open {
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   Mobile Navigation Drawer (@media max-width: 1040px)
   -------------------------------------------------------------------------- */
@media (max-width: 1040px) {
  .mobile-menu-btn {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 75px;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100%;
    margin: 0;
    box-sizing: border-box;
    white-space: normal;
    max-height: calc(100vh - 75px);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 1.25rem 1.5rem 2rem 1.5rem;
    gap: 0.4rem;
    overflow-y: auto;
    z-index: 999;
    list-style: none;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.22s ease;
  }

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

  .main-nav > li {
    width: 100%;
  }

  .main-nav .nav-link,
  .main-nav .nav-dropdown-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.15rem;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--esn-navy);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.15s ease;
    width: 100%;
    box-sizing: border-box;
  }

  .main-nav .nav-link:hover,
  .main-nav .nav-dropdown-toggle:hover {
    background: #f1f5f9;
    color: var(--esn-cyan-dark);
  }

  .main-nav .nav-link.active {
    background: var(--esn-cyan-light);
    color: var(--esn-cyan-dark);
  }

  /* Mobile Dropdown Accordion */
  .nav-item-dropdown {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  .nav-dropdown-chevron {
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .nav-item-dropdown.mobile-open .nav-dropdown-chevron {
    transform: rotate(180deg);
  }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: #f8fafc;
    border-radius: 10px;
    padding: 0.5rem;
    margin: 0.25rem 0 0.5rem 0;
    display: none;
    flex-direction: column;
    gap: 0.25rem;
  }

  .nav-item-dropdown.mobile-open .nav-dropdown-menu {
    display: flex;
  }

  .nav-dropdown-link {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    border-radius: 8px;
    background: transparent;
  }

  .nav-dropdown-link:hover {
    background: #ffffff;
    color: var(--esn-cyan-dark);
  }

  .mobile-nav-cta-item {
    display: block;
    width: 100%;
    margin-top: 0.5rem;
  }

  .mobile-nav-cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--esn-cyan);
    color: #ffffff;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    padding: 0.85rem;
    border-radius: 10px;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 174, 239, 0.25);
    transition: all 0.15s ease;
  }

  .mobile-nav-cta-btn:hover {
    background: var(--esn-cyan-dark);
  }
}

.mobile-nav-cta-item {
  display: none;
}

/* --------------------------------------------------------------------------
   Cards & Badges
   -------------------------------------------------------------------------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-card);
  transition: all 0.25s ease;
}

.card:hover {
  box-shadow: var(--shadow-hover);
  border-color: var(--border-dark);
  transform: translateY(-3px);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge-cyan { background: var(--esn-cyan-light); color: var(--esn-cyan-dark); border: 1px solid var(--esn-cyan-border); }
.badge-green { background: var(--esn-green-light); color: var(--esn-green-dark); border: 1px solid var(--esn-green-border); }
.badge-pink { background: var(--esn-magenta-light); color: var(--esn-magenta-dark); border: 1px solid var(--esn-magenta-border); }
.badge-orange { background: var(--esn-orange-light); color: var(--esn-orange-dark); border: 1px solid var(--esn-orange-border); }

/* --------------------------------------------------------------------------
   Modal Window
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 1.5rem;
}

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

.modal-content {
  background: #ffffff;
  border-radius: var(--radius-xl);
  max-width: 650px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.25rem;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--bg-subtle);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all 0.15s ease;
}

.modal-close:hover {
  background: var(--border);
  color: var(--text-main);
}

/* --------------------------------------------------------------------------
   Site Footer (Clean & Modern ESN Blue)
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--esn-navy);
  color: #e2e8f0;
  padding: 4.5rem 0 2rem 0;
  border-top: 4px solid var(--esn-cyan);
  position: relative;
  z-index: 10;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-logo {
  height: 60px;
  width: auto;
  margin-bottom: 1.25rem;
  filter: brightness(0) invert(1);
}

.footer-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-eu-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  gap: 1.25rem;
  align-items: center;
  margin-bottom: 2rem;
}

.eu-flag-img {
  width: 54px;
  height: 36px;
  flex-shrink: 0;
  border-radius: 2px;
}

.eu-text {
  font-size: 0.82rem;
  color: #94a3b8;
  line-height: 1.55;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #94a3b8;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-legal-row {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem;
  vertical-align: middle;
}

.footer-admin-link {
  color: #64748b !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  text-decoration: none !important;
  margin-left: 8px !important;
}

.footer-admin-link:hover {
  color: #ffffff !important;
}

.footer-admin-icon {
  width: 18px !important;
  height: 18px !important;
  display: block !important;
  flex-shrink: 0 !important;
}

/* --------------------------------------------------------------------------
   Subtle Back to Top Floating Button
   -------------------------------------------------------------------------- */
.back-to-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(203, 213, 225, 0.85);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  color: var(--esn-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 995;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.25s ease,
              background-color 0.2s ease,
              border-color 0.2s ease,
              box-shadow 0.2s ease,
              color 0.2s ease;
  outline: none;
}

.back-to-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  background: #ffffff;
  color: var(--esn-cyan-dark);
  border-color: var(--esn-cyan);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 174, 239, 0.2), 0 2px 6px rgba(0, 0, 0, 0.05);
}

.back-to-top-btn:active {
  transform: translateY(0);
}

.back-to-top-btn svg {
  width: 18px;
  height: 18px;
  stroke-width: 2.5;
  transition: transform 0.2s ease;
}

.back-to-top-btn:hover svg {
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Footer Language Selector & Notification Toast
   -------------------------------------------------------------------------- */
.footer-lang-picker {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 0.25rem 0.35rem;
  border-radius: var(--radius-full);
}

.lang-btn {
  background: transparent;
  border: none;
  color: #94a3b8;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.15s ease;
}

.lang-btn:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
  background: var(--esn-cyan);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 174, 239, 0.3);
}

.lang-notification-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--esn-navy);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.86rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  z-index: 1010;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.lang-notification-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}