/* ==========================================================================
   Mobile Hamburger, Fullscreen Drawer & Intro Layout (< 1024px)
   ========================================================================== */
@media (max-width: 1023.98px) {
  /* Hamburger Menu Button on Mobile:
     - Default: 2 equal horizontal lines
     - Hover / Tap-Active: merges into one line '-'
     - Deployed (.is-active): rotates into a slash '/' */
  .nav-hamburger-btn {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
    pointer-events: auto;
    cursor: pointer !important;
    position: relative;
    z-index: 110;
    width: var(--nav-hamburger-size, 30px);
    height: var(--nav-hamburger-size, 30px);
    gap: var(--nav-hamburger-gap, 4.5px);
    transform: rotate(0deg);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
  }

  .nav-hamburger-btn .hamburger-line {
    display: block;
    width: var(--nav-hamburger-line-width, 19px);
    height: var(--nav-hamburger-line-height, 1.5px);
    background-color: #ffffff;
    border-radius: 1px;
    transition: transform 0.18s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.18s ease;
    will-change: transform;
  }

  /* Hover & Tap: Merge both lines into single center line '-' */
  .nav-hamburger-btn:hover .hamburger-line:first-child,
  .nav-hamburger-btn:active .hamburger-line:first-child,
  .nav-hamburger-btn:focus-visible .hamburger-line:first-child {
    transform: translateY(calc((var(--nav-hamburger-gap, 4.5px) + var(--nav-hamburger-line-height, 1.5px)) / 2));
  }

  .nav-hamburger-btn:hover .hamburger-line:last-child,
  .nav-hamburger-btn:active .hamburger-line:last-child,
  .nav-hamburger-btn:focus-visible .hamburger-line:last-child {
    transform: translateY(calc(-1 * (var(--nav-hamburger-gap, 4.5px) + var(--nav-hamburger-line-height, 1.5px)) / 2));
  }

  /* Deployed / Active: Merged into single line and rotated into slash '/' */
  .nav-hamburger-btn.is-active {
    transform: rotate(var(--nav-hamburger-active-rotate, -68deg));
  }

  .nav-hamburger-btn.is-active .hamburger-line:first-child {
    transform: translateY(calc((var(--nav-hamburger-gap, 4.5px) + var(--nav-hamburger-line-height, 1.5px)) / 2));
  }

  .nav-hamburger-btn.is-active .hamburger-line:last-child {
    transform: translateY(calc(-1 * (var(--nav-hamburger-gap, 4.5px) + var(--nav-hamburger-line-height, 1.5px)) / 2));
  }

  /* Revelatio Fullscreen Blur & Darken Backdrop Overlay (< 1024px) */
  .nav-dropdown-backdrop {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100dvh;
    z-index: 90;
    background: var(--mobile-nav-backdrop-bg, rgba(0, 0, 0, 0.80));
    backdrop-filter: blur(var(--mobile-nav-backdrop-blur, 20px)) saturate(160%);
    -webkit-backdrop-filter: blur(var(--mobile-nav-backdrop-blur, 20px)) saturate(160%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
      visibility 0.3s ease;
  }

  .nav-dropdown-backdrop.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  /* Fullscreen Dropdown Menu Drawer (< 1024px) */
  .nav-dropdown-menu {
    position: fixed;
    inset: 0;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100dvh;
    max-height: 100dvh;
    z-index: 95;
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: calc(env(safe-area-inset-top, 0px) + var(--mobile-nav-top-spacing, 109px)) 24px calc(env(safe-area-inset-bottom, 0px) + 24px) 24px;
    box-sizing: border-box;
    border: none;
    border-radius: 0;
    box-shadow: none;
    transform: none;
    will-change: opacity;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1),
      visibility 0.3s ease;
  }

  .nav-dropdown-menu.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    will-change: opacity;
  }

  .nav-dropdown-grid {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    min-height: calc(100dvh - 120px);
    width: 100%;
    gap: 0;
  }

  .nav-dropdown-col-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--mobile-nav-link-gap, 5px);
    padding: 0;
    width: 100%;
    flex: 0 0 auto;
  }

  /* Redirection Links: AT Aero Retina typography with customizable font size & gaps */
  .nav-dropdown-row-link,
  .nav-dropdown-row-link .nav-row-text {
    font-family: var(--font-retina, 'AT Aero Retina', 'At Aero Retina', 'AtAero-Retina', 'AT Aero', -apple-system, sans-serif);
    font-size: var(--mobile-nav-link-font-size, 30px);
    line-height: var(--mobile-nav-link-line-height, 1.1) !important;
    letter-spacing: var(--mobile-nav-link-letter-spacing, -0.02em);
    font-weight: 350;
    color: #ffffff;
    text-decoration: none;
    padding: var(--mobile-nav-link-padding-y, 0px) 0 !important;
    min-height: auto;
    opacity: 1;
    display: block;
  }

  .nav-dropdown-row-link:active,
  .nav-dropdown-row-link:active .nav-row-text {
    opacity: 0.65;
    transform: scale(0.98);
    transition: opacity 120ms ease-out, transform 120ms ease-out;
  }

  .nav-dropdown-row-link .nav-row-roll {
    overflow: visible;
    height: auto;
    display: block;
  }

  .nav-dropdown-row-link .nav-row-roll-inner {
    transform: none !important;
    display: block;
  }

  .nav-dropdown-row-link .nav-row-text:last-child {
    display: none;
  }

  .nav-dropdown-row-link .nav-row-text:first-child {
    display: block;
  }

  /* Hide subtag, divider, location block, dual timezones per explicit user instruction */
  .nav-dropdown-subtag,
  .nav-dropdown-divider,
  .nav-dropdown-location-block,
  .nav-dropdown-clock-wrap,
  .nav-clock-line {
    display: none;
  }

  /* Mobile Live Studio Clock (UTC+7) underneath last nav link (Archive) */
  .nav-dropdown-mobile-clock {
    display: inline-flex;
    align-items: center;
    margin-top: 14px;
    padding-left: 1px;
    color: #ffffff;
    opacity: 1;
    font-size: var(--mobile-nav-clock-font-size, 12px);
    contain: layout paint;
    will-change: contents;
    pointer-events: none;
  }

  .nav-dropdown-mobile-clock .nav-clock-dot {
    display: none;
  }

  .nav-dropdown-mobile-clock .nav-dropdown-clock {
    color: #ffffff;
    font-size: var(--mobile-nav-clock-font-size, 12px);
    line-height: 1 !important;
    display: inline-block;
    white-space: nowrap;
  }

  /* Unwrap right column wrapper */
  .nav-dropdown-col-right,
  .nav-dropdown-meta-col {
    display: contents;
  }

  /* 01 Ongoing projects block + 3 social icons pinned 25px from bottom and right edge of screen */
  .nav-dropdown-info-stack {
    position: fixed;
    right: calc(env(safe-area-inset-right, 0px) + var(--mobile-nav-info-margin-right, 25px));
    bottom: calc(env(safe-area-inset-bottom, 0px) + var(--mobile-nav-info-margin-bottom, 25px));
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    text-align: right;
    padding: 0;
    margin: 0;
    gap: 8px;
    width: auto;
    z-index: 98;
  }

  .nav-dropdown-ongoing {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    text-align: right;
  }

  .nav-dropdown-ongoing .nav-ongoing-line {
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  .nav-dropdown-ongoing .nav-ongoing-text {
    font-family: var(--type-aero-c-font, 'AT Aero', sans-serif);
    font-weight: var(--type-aero-c-weight, 400);
    font-size: var(--mobile-nav-ongoing-font-size, 14.5px);
    line-height: 1;
    letter-spacing: var(--type-aero-c-mobile-spacing, -0.55px);
    color: #ffffff;
    white-space: nowrap;
  }

  .nav-dropdown-socials {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 20px;
    margin-top: 2px;
  }

  .nav-dropdown-socials .nav-social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: auto;
    height: auto;
    padding: 4px 0;
    color: #faf9fc;
    transition: color 0.2s ease;
    text-decoration: none;
  }

  .nav-dropdown-socials .nav-social-icon::before {
    content: '';
    position: absolute;
    inset: -8px -4px;
  }

  .nav-dropdown-socials .nav-social-icon svg {
    width: 17px;
    height: 17px;
  }

  .nav-dropdown-socials .nav-social-icon .social-icon-txt {
    font-size: 15.5px;
  }

  .nav-dropdown-socials .nav-social-icon:active {
    color: #faf9fc;
  }

  /* Hide floating bottom CTA button when mobile menu is active */
  body.nav-dropdown-active .nav-floating-cta {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateX(-50%) translateY(16px) scale(0.96);
    transition: opacity 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }

  /* Mobile touch micro-feedback (:active states) */
  .f3-gallery-subbar .f3-featured-more-link:active,
  .f3-statement-btn:active,
  .nav-floating-cta:active {
    transform: scale(0.94);
    opacity: 0.75;
    transition: transform 120ms ease-out, opacity 120ms ease-out;
  }

  /* ==========================================================================
     Mobile Hero & Intro Layout (< 1024px)
     - Hide ASCII hero on mobile
     - Start page directly from Manifesto Statement
     - Position quote & Background button visible at initial viewport (25px bottom padding)
     ========================================================================== */
  #hero-viewport,
  .hero-center-viewport {
    display: none;
  }

  .f3-section-intro {
    padding-top: 0;
    padding-bottom: 0;
    min-height: auto;
    box-sizing: border-box;
  }

  .f3-section-intro > .f3-container {
    padding-left: 25px;
    padding-right: 25px;
    box-sizing: border-box;
  }

  .f3-intro-lockup {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    padding-top: 100px;
    padding-bottom: 25px;
    margin-bottom: 0;
    box-sizing: border-box;
  }

  .f3-intro-right-col {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    flex: 0 0 auto;
    width: 100%;
    margin-top: auto;
  }

  .f3-intro-statement {
    font-size: 30px;
    line-height: 1.15;
    letter-spacing: -0.9px;
    margin: 0 0 20px 0;
  }

  .f3-statement-btn {
    margin-bottom: 0;
  }

} /* End @media (max-width: 1023.98px) */