/* ==========================================================================
   KALIUM SIMPLE HEADER SYSTEM (minimal-header.css)
   Left: Hamburger Menu (/menu)
   Center: Logo PNG (assets/kalium_text_logo_white.png)
   Right: Login & Sign Up (Hidden until payment gateways active)
   ========================================================================== */

/* Universal Header: Simple 3-Column Grid (Fixed to Follow Scroll) */
.site-header,
.subpage-header,
header.site-header,
header.subpage-header,
header.site-header.homepage-header,
header.nav#main-header,
header.top-nav-bar {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  height: 60px !important;
  z-index: 1000 !important;
  box-sizing: border-box !important;
  padding: 0 clamp(16px, 3.5vw, 40px) !important;
  display: grid !important;
  grid-template-columns: 1fr auto 1fr !important;
  align-items: center !important;
  background: rgba(7, 7, 8, 0.88) !important;
  backdrop-filter: blur(18px) saturate(160%) !important;
  -webkit-backdrop-filter: blur(18px) saturate(160%) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease !important;
}

/* Elevation on scroll */
.site-header.is-scrolled,
.subpage-header.is-scrolled,
header.site-header.is-scrolled {
  background: rgba(5, 5, 6, 0.94) !important;
  border-bottom-color: rgba(255, 255, 255, 0.12) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5) !important;
}

/* Ensure document content clears fixed header */
body:not(.downloads-page):not(.macos-desktop):not(.is-app-fullscreen) {
  padding-top: 60px !important;
}

/* 1. LEFT: Back to Portfolio & Hamburger Menu */
.header-left,
.site-header .nav-left,
.subpage-header .subpage-header-left,
.nav .nav-logo-group {
  display: flex !important;
  align-items: center !important;
  justify-content: flex-start !important;
  gap: 10px !important;
  grid-column: 1 / 2 !important;
}

.header-back-portfolio-btn {
  display: inline-flex !important;
  align-items: center !important;
  gap: 7px !important;
  padding: 6px 14px !important;
  border-radius: 999px !important;
  background: rgba(255, 255, 255, 0.05) !important;
  border: 1px solid rgba(255, 255, 255, 0.14) !important;
  color: #E6E6EA !important;
  text-decoration: none !important;
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
  font-size: 0.68rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.12em !important;
  text-transform: uppercase !important;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.28) !important;
  white-space: nowrap !important;
  cursor: pointer !important;
}

.header-back-portfolio-btn:hover {
  background: #FFFFFF !important;
  color: #070708 !important;
  border-color: #FFFFFF !important;
  transform: translateX(-2px) !important;
  box-shadow: 0 4px 18px rgba(255, 255, 255, 0.28) !important;
}

.header-back-portfolio-btn svg {
  transition: transform 0.22s ease !important;
  color: inherit !important;
  stroke: currentColor !important;
  display: block !important;
}

.header-back-portfolio-btn:hover svg {
  transform: translateX(-2px) !important;
}

@media (max-width: 600px) {
  .header-left,
  .site-header .nav-left,
  .subpage-header .subpage-header-left,
  .nav .nav-logo-group {
    gap: 6px !important;
  }
  .header-back-portfolio-btn {
    padding: 5px 9px !important;
    font-size: 0.62rem !important;
    gap: 4px !important;
    letter-spacing: 0.08em !important;
  }
}

.header-menu-btn,
.header-hamburger-btn,
.subpage-mobile-menu-btn,
.nav-menu-trigger {
  width: 40px !important;
  height: 40px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  border-radius: 50% !important;
  background: rgba(255, 255, 255, 0.04) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  color: #FAFAFA !important;
  cursor: pointer !important;
  text-decoration: none !important;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1) !important;
  padding: 0 !important;
}

.header-menu-btn:hover,
.header-hamburger-btn:hover,
.subpage-mobile-menu-btn:hover,
.nav-menu-trigger:hover {
  background: rgba(255, 255, 255, 0.14) !important;
  border-color: rgba(255, 255, 255, 0.25) !important;
  color: #FFFFFF !important;
  transform: scale(1.06) !important;
}

/* 2. CENTER: Logo PNG (Strictly No Text, No Kanji/Text collision) */
.header-center,
.site-header .header-center,
.subpage-header .header-center,
.nav-center-logo {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  grid-column: 2 / 3 !important;
}

.header-logo-link,
.subpage-brand-link,
.nav-brand-link {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  text-decoration: none !important;
  cursor: pointer !important;
}

.header-logo-png,
.header-logo-img,
.header-logo-gif {
  height: 22px !important;
  width: auto !important;
  max-width: 140px !important;
  object-fit: contain !important;
  display: block !important;
  transition: opacity 0.2s ease, transform 0.2s ease !important;
}

.header-logo-link:hover .header-logo-png,
.subpage-brand-link:hover .header-logo-png,
.nav-brand-link:hover .header-logo-png {
  opacity: 0.82 !important;
  transform: scale(1.02) !important;
}

/* 3. RIGHT: Login & Sign Up (Hidden until payment gateways active) */
.header-right,
.site-header .nav-right,
.subpage-header .subpage-header-right,
.nav .nav-right-actions {
  display: flex !important;
  align-items: center !important;
  justify-content: flex-end !important;
  grid-column: 3 / 4 !important;
}

.header-auth-group {
  display: none !important; /* Kept ready, hidden until payment gateways active */
  align-items: center !important;
  gap: 12px !important;
}

.header-auth-link {
  color: rgba(255, 255, 255, 0.7) !important;
  font-family: 'Neue Montreal', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: 0.82rem !important;
  font-weight: 600 !important;
  text-decoration: none !important;
  transition: color 0.2s ease !important;
}

.header-auth-link:hover {
  color: #FFFFFF !important;
}

.header-auth-btn {
  background: #FFFFFF !important;
  color: #070708 !important;
  padding: 6px 14px !important;
  border-radius: 999px !important;
  font-family: 'Neue Montreal', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-size: 0.8rem !important;
  font-weight: 700 !important;
  text-decoration: none !important;
  transition: all 0.2s ease !important;
}

.header-auth-btn:hover {
  background: #EAEAEA !important;
  transform: translateY(-1px) !important;
}

/* Explicitly hide legacy center navigation links, raw text titles, contact pills, and badges */
.header-nav-links,
.subpage-center-links,
.subpage-brand-title,
.nav-brand-title,
.header-contact-btn,
.subpage-contact-pill,
.subpage-discipline-badge,
.header-portfolio-pill,
.header-signup-btn,
.header-signup-pill,
.subpage-portfolio-links,
.header-vault-btn,
.header-login-link,
.customer-auth-trigger,
.subpage-account-pill {
  display: none !important;
}

/* Mobile & Tablet Responsiveness (< 900px) */
@media (max-width: 900px) {
  .site-header,
  .subpage-header,
  header.site-header,
  header.subpage-header,
  header.site-header.homepage-header,
  header.nav#main-header {
    height: 56px !important;
    padding: 0 16px !important;
  }
  body:not(.downloads-page):not(.macos-desktop):not(.is-app-fullscreen) {
    padding-top: 56px !important;
  }

  .header-logo-png,
  .header-logo-img,
  .header-logo-gif {
    height: 19px !important;
    max-width: 115px !important;
  }

  .header-menu-btn,
  .header-hamburger-btn {
    width: 36px !important;
    height: 36px !important;
  }
}