/* =========================================================================
   SITE MOTION & POLISH — theme-wide layer
   -------------------------------------------------------------------------
   Loaded after original-design.css + style.css (see inc/enqueue.php) and
   only overrides/adds; original-design.css itself is untouched, so this
   file can be removed on its own to roll everything here back.

   Covers the parts every page shares: buttons, footer, scroll-to-top,
   preloader, mobile menu, search popup, reading-progress bar, focus
   rings, and a hover upgrade for the older Stadum card widgets.
   The header's own motion (header-motion.js) is deliberately not touched.

   Pairs with assets/js/site-motion.js.
========================================================================= */

:root{
  --sm-ease: cubic-bezier(.19, 1, .22, 1);
  --sm-soft: cubic-bezier(.33, 1, .68, 1);
  --sm-teal-bright: #5FD3C6;   /* teal that stays readable on dark ink */
}

/* ---------------------------------------------------------------------
   1. Small global touches
--------------------------------------------------------------------- */
::selection{ background: var(--c-teal); color: var(--c-white); }

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible{
  outline: 2px solid var(--c-teal);
  outline-offset: 3px;
}

/* Reading progress — a thin thread across the very top of the page. */
.site-progress{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  z-index: 10001;
  pointer-events: none;
  background: linear-gradient(90deg, var(--c-teal), var(--sm-teal-bright));
  transform-origin: 0 50%;
  transform: scaleX(var(--sp, 0));
}
.admin-bar .site-progress{ top: 32px; }
@media (max-width: 782px){ .admin-bar .site-progress{ top: 46px; } }

/* Scroll reveal used by site-motion.js (footer columns). */
.sm-rv{ opacity: 0; transform: translate3d(0, 30px, 0); }
.sm-rv.is-in{
  opacity: 1; transform: none;
  transition: opacity .9s var(--sm-soft) calc(var(--rv-i, 0) * 90ms),
              transform 1.1s var(--sm-ease) calc(var(--rv-i, 0) * 90ms);
}

/* ---------------------------------------------------------------------
   2. Buttons (.th-btn) — colour sweep, arrow turn, magnetic pull
--------------------------------------------------------------------- */
.th-btn{
  position: relative;
  background-image: linear-gradient(var(--c-ink), var(--c-ink));
  background-repeat: no-repeat;
  background-position: left center;
  background-size: 0% 100%;
  transition:
    background-size .55s var(--sm-ease),
    background-color .3s ease-out,
    border-color .3s ease-out,
    color .35s ease-out,
    translate .5s var(--sm-ease),
    box-shadow .5s var(--sm-ease),
    transform .3s var(--sm-ease);
}
.th-btn i,
.th-btn .th-arrow{ transition: transform .5s var(--sm-ease); }

.th-btn:hover{
  background-color: var(--c-teal);
  background-image: linear-gradient(var(--c-ink), var(--c-ink));
  background-size: 100% 100%;
  border-color: var(--c-ink);
  color: var(--c-white);
  box-shadow: 0 16px 30px -14px rgba(27,36,48,.55);
}
.th-btn:hover i,
.th-btn:hover .th-arrow{ transform: rotate(-45deg); }
.th-btn:active{ transform: scale(.97); }

.th-btn.style-border1,
.th-btn.style-border1:hover{ background-color: transparent; background-image: linear-gradient(var(--c-ink), var(--c-ink)); }
.th-btn.style-border1:hover{ color: var(--c-white); border-color: var(--c-ink); }

.th-btn.white-hover{ background-image: linear-gradient(var(--c-teal), var(--c-teal)); }
.th-btn.white-hover:hover{
  background-color: var(--c-white);
  background-image: linear-gradient(var(--c-teal), var(--c-teal));
  color: var(--c-white);
  border-color: var(--c-teal);
}

/* ---------------------------------------------------------------------
   3. Footer — dark ink surface with a drawn teal thread on top
--------------------------------------------------------------------- */
.footer-wrapper{
  background: var(--c-ink);
  color: rgba(255,255,255,.64);
  overflow: hidden;
  isolation: isolate;
}
/* Top thread: draws across when the footer scrolls into view. */
.footer-wrapper::before{
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-teal) 18%, var(--sm-teal-bright) 50%, var(--c-teal) 82%, transparent);
  transform-origin: left center;
  transition: transform 1.8s var(--sm-ease);
}
.footer-wrapper.sm-thread-pending::before{ transform: scaleX(0); }
.footer-wrapper.sm-thread-pending.is-in::before{ transform: scaleX(1); }

/* Quiet dotted field in the top-right corner. */
.footer-wrapper::after{
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 420px; height: 280px;
  z-index: -1;
  background-image: radial-gradient(rgba(255,255,255,.14) 1px, transparent 1px);
  background-size: 18px 18px;
  -webkit-mask-image: radial-gradient(circle at 100% 0, #000, transparent 70%);
          mask-image: radial-gradient(circle at 100% 0, #000, transparent 70%);
  pointer-events: none;
}

.footer-brand{ color: var(--c-white); }
.footer-address{ color: rgba(255,255,255,.64); }
.footer-contact-line strong{ color: var(--c-white); }
.footer-contact-line a{
  color: rgba(255,255,255,.64);
  background: linear-gradient(currentColor, currentColor) no-repeat left bottom / 0 1px;
  transition: color .3s ease-out, background-size .5s var(--sm-ease);
}
.footer-contact-line a:hover{ color: var(--sm-teal-bright); background-size: 100% 1px; }

.footer-col-title{ color: var(--c-white); }
.footer-col-title::after{
  content: '';
  display: block;
  width: 26px; height: 2px;
  margin-top: 12px;
  background: var(--c-teal);
  transition: width .7s var(--sm-ease);
}
.footer-wrapper .row > div:hover .footer-col-title::after{ width: 56px; }

.footer-menu a{
  display: inline-flex;
  align-items: center;
  color: rgba(255,255,255,.64);
  transition: color .3s ease-out;
}
.footer-menu a::before{
  content: '';
  width: 0; height: 1px;
  margin-right: 0;
  background: var(--sm-teal-bright);
  transition: width .45s var(--sm-ease), margin .45s var(--sm-ease);
}
.footer-menu a:hover{ color: var(--c-white); }
.footer-menu a:hover::before{ width: 14px; margin-right: 8px; }

.footer-social a{
  position: relative;
  overflow: hidden;
  border-color: rgba(255,255,255,.18);
  color: var(--c-white);
  background-image: linear-gradient(var(--c-teal), var(--c-teal));
  background-repeat: no-repeat;
  background-position: center bottom;
  background-size: 100% 0;
  transition: background-size .45s var(--sm-ease), border-color .3s ease-out, transform .5s var(--sm-ease);
}
.footer-social a:hover{
  background-color: transparent;
  background-size: 100% 100%;
  border-color: var(--c-teal);
  transform: translateY(-4px);
}
.footer-social a:hover i{ animation: sm-icon-hop .55s var(--sm-ease); }

.footer-bottom{ border-top-color: rgba(255,255,255,.1); }
.copyright-text{ color: rgba(255,255,255,.5); }
.copyright-text strong{ color: var(--c-white); }

/* ---------------------------------------------------------------------
   4. Scroll-to-top — round, with the progress ring main.js already drives
--------------------------------------------------------------------- */
.scroll-top{
  width: 52px; height: 52px;
  border-radius: 50%;
  box-shadow: 0 14px 30px -12px rgba(27,36,48,.5), inset 0 0 0 1px rgba(255,255,255,.12);
  transform: translateY(18px) scale(.85);
  transition: opacity .4s ease-out, visibility .4s, transform .6s var(--sm-ease), background-color .3s ease-out;
  overflow: hidden;
}
.scroll-top.show{ transform: none; }
.scroll-top svg path{
  fill: none;
  stroke: var(--c-teal);
  stroke-width: 3;
}
.scroll-top:hover{ background: var(--c-teal); }
.scroll-top:hover svg path{ stroke: var(--c-white); }
.scroll-top:hover i{ animation: sm-fly-up .6s var(--sm-ease); }

@keyframes sm-fly-up{
  0%{ transform: none; }
  45%{ transform: translateY(-30px); }
  46%{ transform: translateY(30px); }
  100%{ transform: none; }
}
@keyframes sm-icon-hop{
  0%{ transform: none; }
  45%{ transform: translateY(-140%); }
  46%{ transform: translateY(140%); }
  100%{ transform: none; }
}

/* ---------------------------------------------------------------------
   5. Preloader — the site name shimmers above a moving thread
--------------------------------------------------------------------- */
.preloader .loader{
  position: relative;
  padding-bottom: 18px;
  background: linear-gradient(90deg, var(--c-ink) 0 40%, var(--c-teal) 50%, var(--c-ink) 60% 100%);
  background-size: 250% 100%;
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: sm-shimmer 1.8s linear infinite;
}
.preloader .loader::after{
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  border-radius: 3px;
  background:
    linear-gradient(var(--c-teal), var(--c-teal)) no-repeat 0 0 / 35% 100%,
    var(--c-line);
  animation: sm-thread 1.4s var(--sm-soft) infinite;
}
@keyframes sm-shimmer{ from{ background-position: 100% 0; } to{ background-position: 0 0; } }
@keyframes sm-thread{ from{ background-position: -60% 0, 0 0; } to{ background-position: 160% 0, 0 0; } }

/* ---------------------------------------------------------------------
   6. Mobile menu slides in, links cascade
--------------------------------------------------------------------- */
.th-menu-area{
  transform: translateX(-100%);
  transition: transform .7s var(--sm-ease);
}
.th-menu-wrapper.th-body-visible .th-menu-area{ transform: none; }

.th-mobile-menu > ul > li{
  opacity: 0;
  transform: translateX(-18px);
  transition: opacity .5s ease-out, transform .7s var(--sm-ease);
}
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li{ opacity: 1; transform: none; }
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li:nth-child(1){ transition-delay: .12s; }
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li:nth-child(2){ transition-delay: .17s; }
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li:nth-child(3){ transition-delay: .22s; }
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li:nth-child(4){ transition-delay: .27s; }
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li:nth-child(5){ transition-delay: .32s; }
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li:nth-child(6){ transition-delay: .37s; }
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li:nth-child(7){ transition-delay: .42s; }
.th-menu-wrapper.th-body-visible .th-mobile-menu > ul > li:nth-child(n+8){ transition-delay: .47s; }
.th-mobile-menu ul li a{ transition: color .3s ease-out, padding .45s var(--sm-ease); }
.th-mobile-menu ul li a:hover{ color: var(--c-teal); padding-left: 10px; }

.th-menu-toggle{ transition: background-color .3s ease-out, transform .5s var(--sm-ease); }
.th-menu-toggle:hover{ background: var(--c-teal); transform: rotate(90deg); }

/* ---------------------------------------------------------------------
   7. Search popup — the field rises into place
--------------------------------------------------------------------- */
.popup-search-box .th-search-form{
  opacity: 0;
  transform: translateY(30px) scale(.96);
  transition: opacity .5s ease-out .1s, transform .8s var(--sm-ease) .1s;
}
.popup-search-box.show .th-search-form{ opacity: 1; transform: none; }
.popup-search-box .searchClose{ transition: transform .5s var(--sm-ease), background-color .3s, border-color .3s; }
.popup-search-box .searchClose:hover{ transform: rotate(90deg); background: var(--c-teal); border-color: var(--c-teal); }

/* ---------------------------------------------------------------------
   8. Older Stadum card widgets — same hover language as the AIDH cards
--------------------------------------------------------------------- */
.academic-card, .campus-card, .event-card, .blog-card, .quicklink-card{
  transition: transform .6s var(--sm-ease), box-shadow .6s var(--sm-ease), border-color .35s ease-out;
}
.academic-card img, .campus-card img, .event-card img, .blog-card img{
  transition: transform 1.2s var(--sm-ease);
}
.academic-card .box-title a, .campus-card .box-title a, .event-card .box-title a, .blog-card .box-title a{
  background: linear-gradient(currentColor, currentColor) no-repeat left bottom / 0 1px;
  transition: background-size .6s var(--sm-ease), color .3s ease-out;
}
.academic-card:hover .box-title a, .campus-card:hover .box-title a,
.event-card:hover .box-title a, .blog-card:hover .box-title a{ background-size: 100% 1px; }
.academic-card:hover, .campus-card:hover, .event-card:hover, .blog-card:hover{
  box-shadow: var(--shadow-card-hover), 0 0 0 2px var(--c-teal);
}

/* ---------------------------------------------------------------------
   9. Reduced motion
--------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce){
  .sm-rv{ opacity: 1 !important; transform: none !important; }
  .footer-wrapper.sm-thread-pending::before{ transform: none !important; }
  .th-btn, .th-btn *, .footer-wrapper *, .scroll-top, .scroll-top *,
  .th-menu-area, .th-mobile-menu li, .popup-search-box *{
    transition-duration: .01ms !important;
    animation: none !important;
  }
  .preloader .loader, .preloader .loader::after{ animation: none !important; }
  .site-progress{ display: none; }
}