/* ==========================================================================
   SHARED UI ENHANCEMENT LAYER
   Loaded on every enhanced page (see $enhanced_pages in includes/header.php).
   Layers on top of styles.css — does not replace any existing rule.
   Page-specific styling lives in home.css / contact.css.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. ACCESSIBILITY FOUNDATIONS
   -------------------------------------------------------------------------- */

/* Visible keyboard focus. styles.css ships exactly one :focus rule site-wide. */
:focus-visible{
  outline:3px solid var(--blue);
  outline-offset:3px;
  border-radius:6px;
}
.jobs :focus-visible,
.cta :focus-visible{
  outline-color:var(--lime);
}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--navy);color:var(--white);
  padding:12px 20px;border-radius:0 0 10px 0;
  font-family:'Sora',sans-serif;font-weight:700;font-size:14px;
}
.skip-link:focus{left:0;}

.visually-hidden{
  position:absolute!important;width:1px;height:1px;
  padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* Reduced motion. styles.css has no prefers-reduced-motion block at all, and
   runs permanent infinite animations (.experts-track 45s, .step-num 6s). */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
    scroll-behavior:auto!important;
  }
  html{scroll-behavior:auto!important;}
  .experts-track{animation:none!important;transform:none!important;}
  .reveal{opacity:1!important;transform:none!important;}
}

/* --------------------------------------------------------------------------
   2. READING PROGRESS
   -------------------------------------------------------------------------- */
.reading-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:120;
  background:transparent;pointer-events:none;
}
.reading-progress span{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--blue),var(--lime));
  will-change:transform;
}

/* --------------------------------------------------------------------------
   3. HEADER SCROLL STATE
   -------------------------------------------------------------------------- */
header{transition:box-shadow .3s ease, background-color .3s ease;}
header nav{transition:padding .3s ease;}
.logo img{transition:height .3s ease;}
body.is-scrolled header{
  background:rgba(255,255,255,.94);
  box-shadow:0 8px 30px -14px rgba(11,42,74,.28);
}
body.is-scrolled header nav{padding-top:10px;padding-bottom:10px;}
body.is-scrolled .logo img{height:46px!important;}
/* Reloading part-way down the page restores the scroll position, so the
   header has to start out already shrunk. ui.js sets .header-no-anim for that
   first frame only, otherwise the shrink plays as an animation on every
   reload and the sticky section nav visibly slides up to meet the header. */
body.header-no-anim header,
body.header-no-anim header nav,
body.header-no-anim .logo img{transition:none!important;}

/* --------------------------------------------------------------------------
   4. SCROLL REVEAL
   Content is visible by default — .reveal is added by ui.js, so a JS failure
   or a crawler never sees a blank page.
   -------------------------------------------------------------------------- */
.reveal{
  opacity:0;transform:translateY(24px);
  transition:opacity .6s cubic-bezier(.22,.61,.36,1),
             transform .6s cubic-bezier(.22,.61,.36,1);
  will-change:opacity,transform;
}
.reveal.is-visible{opacity:1;transform:none;}
.reveal-stagger>*{
  opacity:0;transform:translateY(20px);
  transition:opacity .5s cubic-bezier(.22,.61,.36,1),
             transform .5s cubic-bezier(.22,.61,.36,1);
}
.reveal-stagger.is-visible>*{opacity:1;transform:none;}

/* --------------------------------------------------------------------------
   5. BUTTON FIXES
   -------------------------------------------------------------------------- */
/* White on #F5871F is 2.5:1 (WCAG AA fail). Navy on the same orange is 5.7:1. */
.btn-lime{color:var(--navy);font-weight:700;}
.btn-lime:hover{background:var(--white);color:var(--navy);}

/* rgba(255,255,255,.6) on the navy hero is ~4.4:1 at 13px — under the 4.5:1
   AA threshold for body text. .75 clears it comfortably. */
.hero-navy .hero-stats div span,
.hero-navy p.lead{color:rgba(255,255,255,.82);}

/* Magnetic CTAs — pointer devices only, small displacement */
@media (hover:hover) and (pointer:fine){
  .btn-magnetic{
    will-change:transform;
    transition:transform .25s cubic-bezier(.22,.61,.36,1), background .25s ease, color .25s ease;
  }
}
@media (prefers-reduced-motion: reduce){
  .btn-magnetic{transform:none!important;}
}

/* --------------------------------------------------------------------------
   6. FLOATING CONTACT (shared component)
   -------------------------------------------------------------------------- */
.float-contact{
  position:fixed;right:22px;bottom:96px;z-index:105;
  display:flex;flex-direction:column-reverse;align-items:flex-end;gap:12px;
}
body:not(.has-sticky-cta) .float-contact{bottom:28px;}
.float-toggle{
  width:56px;height:56px;border:none;border-radius:50%;cursor:pointer;
  background:var(--navy);color:var(--white);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 16px 34px -12px rgba(11,42,74,.55);
  transition:transform .28s cubic-bezier(.34,1.56,.64,1), background .25s ease;
}
.float-toggle:hover{transform:scale(1.07);background:var(--blue-deep);}
.float-toggle svg{transition:transform .3s ease;}
.float-contact.is-open .float-toggle svg{transform:rotate(135deg);}
.float-actions{
  display:flex;flex-direction:column;gap:10px;align-items:flex-end;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease, transform .25s ease, visibility .25s;
}
.float-contact.is-open .float-actions{opacity:1;visibility:visible;transform:none;}
.float-action{
  display:inline-flex;align-items:center;gap:10px;
  background:var(--white);color:var(--navy);
  font-family:'Sora',sans-serif;font-size:14px;font-weight:600;
  padding:11px 18px;border-radius:999px;
  border:1px solid var(--line);
  box-shadow:0 12px 28px -14px rgba(11,42,74,.4);
  transition:transform .22s ease, border-color .22s ease;
  white-space:nowrap;
}
.float-action:hover{transform:translateX(-4px);border-color:var(--blue);}
.float-action svg{color:var(--blue);flex-shrink:0;}
@media (max-width:700px){
  .float-contact{right:16px;bottom:88px;}
  .float-toggle{width:50px;height:50px;}
}

/* --------------------------------------------------------------------------
   7. STICKY SECTION NAV (any page with #sectionNav)
   --header-h is measured and kept current by ui.js, because the sticky site
   header changes height once the page is scrolled.
   -------------------------------------------------------------------------- */
.section-nav{
  position:sticky;top:var(--header-h,78px);z-index:40;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s ease;
}
body.is-scrolled .section-nav{box-shadow:0 8px 26px -18px rgba(11,42,74,.35);}
.section-nav ul{
  max-width:1400px;margin:0 auto;padding:0 32px;
  list-style:none;display:flex;gap:4px;
  overflow-x:auto;scrollbar-width:none;
}
.section-nav ul::-webkit-scrollbar{display:none;}
.section-nav a{
  position:relative;display:block;white-space:nowrap;
  padding:16px 18px;
  font-family:'Sora',sans-serif;font-size:14px;font-weight:600;
  color:var(--gray);
  transition:color .22s ease;
}
.section-nav a::after{
  content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;
  background:var(--blue);border-radius:3px 3px 0 0;
  transform:scaleX(0);transform-origin:50% 50%;
  transition:transform .3s cubic-bezier(.22,.61,.36,1);
}
.section-nav a:hover{color:var(--navy);}
.section-nav a[aria-current="true"]{color:var(--blue-deep);}
.section-nav a[aria-current="true"]::after{transform:scaleX(1);}
@media (max-width:700px){
  .section-nav ul{padding:0 18px;}
  .section-nav a{padding:14px 13px;font-size:13px;}
}


/* --------------------------------------------------------------------------
   8. GALLERY + LIGHTBOX (about.php, life-with-ait.php)
   -------------------------------------------------------------------------- */
/* styles.css defines .life-gallery TWICE — once around line 983 targeting
   `.life-gallery div` (rows 160px) and again around line 1994 targeting
   `.life-gallery a` (rows 180px). The markup uses <div>, so every item rule in
   the second copy is dead code, yet its bare `.life-gallery` declaration still
   wins on row height. Pin the values here so the result is deterministic
   instead of depending on which duplicate happens to come last. */
.life-gallery{grid-template-rows:repeat(2,180px);}

/* Both copies scope the mobile row-span reset to `a`, which matches nothing —
   so items 1 and 4 kept spanning two rows and overflowed the 3-row grid. */
@media (max-width:900px){
  .life-gallery{grid-template-rows:repeat(3,160px);}
  .life-gallery div:nth-child(1),
  .life-gallery div:nth-child(4){grid-row:span 1;}
}

.life-gallery div{background:var(--sky-2);}
.life-zoom{
  position:absolute;inset:0;z-index:2;
  width:100%;height:100%;padding:0;border:none;cursor:zoom-in;
  background:transparent;
  display:flex;align-items:flex-end;justify-content:flex-end;
}
.life-zoom::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,42,74,0) 55%,rgba(11,42,74,.6) 100%);
  opacity:0;transition:opacity .3s ease;
}
.life-zoom .zoom-ico{
  position:relative;z-index:1;margin:14px;
  width:36px;height:36px;border-radius:50%;
  background:var(--white);color:var(--navy);
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;transform:translateY(6px) scale(.9);
  transition:opacity .3s ease, transform .3s cubic-bezier(.34,1.56,.64,1);
}
.life-gallery div:hover .life-zoom::before,
.life-zoom:focus-visible::before{opacity:1;}
.life-gallery div:hover .zoom-ico,
.life-zoom:focus-visible .zoom-ico{opacity:1;transform:none;}
.life-zoom:focus-visible{outline:3px solid var(--lime);outline-offset:-3px;}

/* Lightbox */
.lightbox{
  position:fixed;inset:0;z-index:200;
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  background:rgba(6,20,38,.92);
  backdrop-filter:blur(6px);
  opacity:0;transition:opacity .25s ease;
}
.lightbox[hidden]{display:none;}
.lightbox.is-open{opacity:1;}
.lightbox-figure{
  position:relative;margin:0;
  max-width:min(1100px,100%);max-height:100%;
  display:flex;flex-direction:column;gap:14px;align-items:center;
}
.lightbox-figure img{
  max-width:100%;max-height:74vh;width:auto;height:auto;
  border-radius:16px;object-fit:contain;
  box-shadow:0 40px 90px -30px rgba(0,0,0,.8);
  transform:scale(.97);transition:transform .28s cubic-bezier(.22,.61,.36,1);
}
.lightbox.is-open .lightbox-figure img{transform:none;}
.lightbox figcaption{
  color:rgba(255,255,255,.85);font-size:14.5px;line-height:1.55;
  text-align:center;max-width:680px;
}
.lightbox-count{
  display:block;margin-top:6px;
  font-family:'Sora',sans-serif;font-size:12.5px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.5);
}
.lightbox-btn{
  position:absolute;top:50%;transform:translateY(-50%);
  width:48px;height:48px;border:none;border-radius:50%;cursor:pointer;
  background:rgba(255,255,255,.14);color:var(--white);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .22s ease, transform .22s ease;
}
.lightbox-btn:hover{background:rgba(255,255,255,.28);}
.lightbox-btn.prev{left:-8px;}
.lightbox-btn.next{right:-8px;}
.lightbox-btn:hover.prev{transform:translateY(-50%) scale(1.08);}
.lightbox-btn:hover.next{transform:translateY(-50%) scale(1.08);}
.lightbox-close{
  position:absolute;top:18px;right:18px;
  width:44px;height:44px;border:none;border-radius:50%;cursor:pointer;
  background:rgba(255,255,255,.14);color:var(--white);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .22s ease, transform .22s ease;
}
.lightbox-close:hover{background:rgba(255,255,255,.28);transform:rotate(90deg);}
.lightbox :focus-visible{outline:3px solid var(--lime);outline-offset:3px;}
@media (max-width:760px){
  .lightbox{padding:16px;}
  .lightbox-btn{width:42px;height:42px;}
  .lightbox-btn.prev{left:0;}
  .lightbox-btn.next{right:0;}
  .lightbox-figure img{max-height:62vh;}
}
body.lightbox-open{overflow:hidden;}