/* Header & Navigation - Glass / blur effect */
#header-section {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(12, 12, 12, 0.28);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
  transition:
    background var(--transition),
    box-shadow var(--transition),
    border-color var(--transition),
    backdrop-filter var(--transition);
}

#header-section.scrolled {
  background: rgba(10, 10, 10, 0.52);
  backdrop-filter: blur(28px) saturate(170%);
  -webkit-backdrop-filter: blur(28px) saturate(170%);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  border-bottom-color: rgba(255, 255, 255, 0.14);
}

.top-bar {
  background: rgba(0, 0, 0, 0.18);
  padding: 14px 0;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.top-bar-left {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

.top-bar-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-white);
  font-weight: 500;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
  transition: color var(--transition);
}

.top-bar-item i {
  color: var(--color-yellow);
  font-size: 0.9rem;
}

.top-bar-item:hover {
  color: var(--color-white);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 22px;
}

.top-bar-gst {
  color: var(--color-white);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.3px;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.4);
}

.social-icons {
  display: flex;
  gap: 10px;
}

.social-icons a {
  color: var(--color-white);
  font-size: 0.85rem;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: all var(--transition);
}

.social-icons a:hover {
  color: var(--color-yellow);
  border-color: var(--color-yellow);
  background: rgba(255, 193, 7, 0.1);
}

.main-header {
  background: transparent;
  padding: 26px 0;
  position: relative;
  transition: padding var(--transition);
  border-bottom: none;
}

.main-header.scrolled {
  padding: 14px 0;
}

.main-header.scrolled .logo-img {
  height: 60px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
}

.logo-img {
  display: block;
  height: 72px;
  width: auto;
  max-width: min(280px, 42vw);
  object-fit: contain;
  object-position: left center;
}

.main-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  margin-right: 28px;
}

.nav-list {
  display: flex;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.3px;
  color: var(--color-white);
  position: relative;
  padding: 10px 0;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.35);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-red);
  box-shadow: 0 0 10px var(--color-red-glow);
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-white);
}

.nav-link.active::after {
  width: 100%;
}

.nav-link:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  gap: 14px;
  flex-shrink: 0;
}

.btn-sm {
  padding: 16px 28px;
  font-size: 0.85rem;
  letter-spacing: 1.4px;
  white-space: nowrap;
}

.header-actions .btn-outline {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.7);
}

.header-actions .btn-outline:hover {
  background: var(--color-white);
  color: var(--color-black);
  border-color: var(--color-white);
}

.mobile-nav-actions {
  display: none;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}

.mobile-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 1024px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.92);
    backdrop-filter: blur(24px) saturate(160%);
    -webkit-backdrop-filter: blur(24px) saturate(160%);
    padding: 24px var(--page-padding) 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    max-height: calc(100dvh - 120px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .main-nav.open {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    gap: 20px;
  }

  .nav-link {
    font-size: 1rem;
  }

  .mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .mobile-nav-actions .btn {
    width: 100%;
    justify-content: center;
    min-height: 48px;
  }

  .header-actions {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .top-bar-left {
    gap: 14px;
  }

  .top-bar-gst {
    display: none;
  }
}

@media (max-width: 600px) {
  .top-bar {
    display: none;
  }

  .top-bar-item span {
    display: none;
  }

  .main-header {
    padding: 16px 0;
  }

  .logo-img {
    height: 56px;
    max-width: min(220px, 58vw);
  }

  .nav-link {
    font-size: 1.05rem;
    padding: 12px 0;
  }

  .mobile-toggle {
    padding: 8px;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
  }
}