/* =========================================
   ANIMATIONS
   Pure motion: transitions, keyframes, AOS
   No layout fixes — those live in their
   respective CSS files.
========================================= */

/* ── Navbar scroll shadow ── */
.navbar {
  transition: box-shadow 0.3s ease;
}
.navbar.scrolled {
  box-shadow: 0 4px 24px rgba(0,0,0,0.10);
}

/* ── Nav link underline on hover ── */
.nav-links > li > a {
  position: relative;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background 0.2s ease;
}
.nav-links > li > a::after {
  content: '';
  position: absolute;
  bottom: 14px;
  left: 11px;
  right: 11px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.25s ease;
}
.nav-links > li > a:hover::after,
.nav-links > li.active > a::after {
  transform: scaleX(1);
}
.nav-links > li > a:hover,
.nav-links > li.active > a {
  background: rgba(15,23,42,0.06);
}

/* ── Dropdown fade + slide ── */
.dropdown {
  display: block !important;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
  pointer-events: none;
}
.has-dropdown:hover .dropdown {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.dropdown li a {
  transition: background 0.18s ease, color 0.18s ease, padding-left 0.18s ease;
}
.dropdown li a:hover {
  background: rgba(15,23,42,0.06);
  color: var(--color-heading);
  padding-left: 24px;
}

/* ── Mobile nav + dropdown ── */
@media (max-width: 1100px) {
  .nav-links {
    display: flex !important;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.35s ease, opacity 0.25s ease;
  }
  .nav-links.open {
    max-height: 600px;
    opacity: 1;
  }
  .nav-links > li > a::after { display: none; }
  .nav-links > li > a:hover { background: rgba(15,23,42,0.04); }
  .dropdown {
    opacity: 1;
    transform: none;
    pointer-events: auto;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .has-dropdown.open .dropdown { max-height: 400px; }
  .nav-toggle { transition: transform 0.25s ease; }
  .nav-toggle.open { transform: rotate(90deg); }
}

/* ── Nav logo ── */
.nav-logo-img {
  width: 80px;
  height: auto;
  display: block;
  object-fit: contain;
}

/* ── Buttons ── */
.btn {
  transition: background 0.22s ease, border-color 0.22s ease,
              color 0.22s ease, transform 0.18s ease, box-shadow 0.22s ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}
.btn:active {
  transform: translateY(0);
  box-shadow: none;
}

/* ── Cards ── */
.facility-card,
.staff-card,
.infra-card,
.achievement-card,
.testimonial-card,
.lab-card,
.notice-card {
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}

/* ── Page banner entrance ── */
.page-banner h1 { animation: fadeSlideUp 0.55s ease both; }
.page-banner p  { animation: fadeSlideUp 0.55s ease 0.1s both; }
.breadcrumb     { animation: fadeSlideUp 0.55s ease 0.18s both; }

/* ── Hero content entrance ── */
.hero-tag       { animation: fadeSlideUp 0.5s ease 0.1s both; }
.hero-overlay h1{ animation: fadeSlideUp 0.55s ease 0.2s both; }
.hero-overlay p { animation: fadeSlideUp 0.5s ease 0.32s both; }
.notice-bar     { animation: fadeSlideUp 0.5s ease 0.4s both; }
.hero-btns      { animation: fadeSlideUp 0.5s ease 0.48s both; }

/* ── Footer links ── */
.site-footer ul li a { transition: color 0.2s ease; }

/* ── More link ── */
.more-link {
  transition: opacity 0.2s ease, letter-spacing 0.2s ease;
}
.more-link:hover { letter-spacing: 0.5px; }

/* ── Topper cards ── */
.topper-card { transition: transform 0.22s ease; }
.topper-card:hover { transform: translateY(-4px); }
.topper-photo { transition: box-shadow 0.22s ease; }
.topper-card:hover .topper-photo {
  box-shadow: 0 4px 16px rgba(15,23,42,0.2);
}

/* ── Gallery ── */
.gallery-item .gal-overlay { display: none; }
.gallery-item {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.gallery-item:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 28px rgba(0,0,0,0.14);
}
@keyframes gentleBounce {
  0%, 100% { transform: translateY(0) scale(1); }
  40%       { transform: translateY(-6px) scale(1.02); }
  70%       { transform: translateY(-3px) scale(1.01); }
}
.gentle-bounce { animation: gentleBounce 0.5s ease; }

/* ── Sidebar links ── */
.sidebar-link {
  transition: background 0.2s ease, color 0.2s ease, padding-left 0.2s ease;
}
.sidebar-link:hover { padding-left: 20px; }

/* ── SpinKit: Double Bounce ── */
.spinner {
  margin: 0 auto;
  width: 40px;
  height: 40px;
  position: relative;
  text-align: center;
  animation: sk-rotate 2.0s infinite linear;
}
.dot1, .dot2 {
  width: 60%;
  height: 60%;
  display: inline-block;
  position: absolute;
  top: 0;
  background-color: var(--color-heading);
  border-radius: 100%;
  animation: sk-bounce 2.0s infinite ease-in-out;
}
.dot2 {
  top: auto;
  bottom: 0;
  animation-delay: -1.0s;
}

/* ── Keyframes ── */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes sk-rotate {
  100% { transform: rotate(360deg); }
}
@keyframes sk-bounce {
  0%, 100% { transform: scale(0.0); }
  50%       { transform: scale(1.0); }
}




/* ── Topper photo halo on hover ── */
.topper-photo {
  transition: box-shadow 0.35s ease, transform 0.35s ease;
}
.topper-card:hover .topper-photo {
  box-shadow:
    0 0 0 3px rgba(255,255,255,0.9),
    0 0 16px 6px rgba(99,132,255,0.4),
    0 0 32px 12px rgba(99,132,255,0.15);
  transform: scale(1.08);
}

/* ── Testimonial card halo + pop on hover ── */
.testimonial-card {
  transition: box-shadow 0.35s ease, transform 0.35s ease;
}
.testimonial-card:hover {
  box-shadow:
    0 0 0 2px rgba(255,255,255,0.9),
    0 0 16px 6px rgba(99,132,255,0.4),
    0 0 32px 12px rgba(99,132,255,0.15);
  transform: translateY(-6px) scale(1.02);
}


/* ── Slider arrows ── */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--color-white);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s ease, transform 0.25s ease;
  backdrop-filter: blur(4px);
}
.slider-arrow:hover {
  background: rgba(255,255,255,0.3);
  transform: translateY(-50%) scale(1.1);
}
.slider-prev { left: 20px; }
.slider-next { right: 20px; }

/* ── Ken Burns on hero slides ── */
.slide img {
  animation: kenBurns 9s ease-in-out infinite alternate;
}
@keyframes kenBurns {
  from { transform: scale(1);    transform-origin: center center; }
  to   { transform: scale(1.06); transform-origin: 60% 40%; }
}

/* ── Page fade-in ── */
@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
body {
  animation: pageFadeIn 0.4s ease both;
}

/* ── Scroll progress bar ── */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), rgba(99,132,255,0.8));
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ── Back to top button ── */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--color-heading);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.2s ease;
  z-index: 999;
}
#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}
#back-to-top:hover {
  background: rgba(99,132,255,0.9);
  transform: translateY(-3px);
}

/* ── Counter animation ── */
.count-up {
  display: inline-block;
}

/* ── Topper % shimmer placeholder ── */
.topper-photo-skeleton {
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}


/* ── Mobile fixes ── */
@media (max-width: 600px) {

  /* Hero tag — remove pill on mobile */
  .hero-tag {
    background: none;
    padding: 0;
    border-radius: 0;
    color: rgba(255,255,255,0.75);
    font-size: 10px;
  }

  /* Hero buttons — stack but don't go full width */
  .hero-btns {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .hero-btns .btn {
    width: auto;
    display: inline-block;
  }

  /* Slider arrows — smaller on mobile */
  .slider-arrow {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
  .slider-prev { left: 8px; }
  .slider-next { right: 8px; }

  /* About placeholder — hide on mobile if empty */
  .about-placeholder {
    display: none;
  }
}

@media (max-width: 400px) {
  /* Hero overlay padding tighter */
  .hero-overlay {
    padding: 0 16px;
  }
  .hero-overlay h1 {
    font-size: 22px;
    line-height: 1.2;
  }
}


/* ── Mobile homepage fixes ── */
@media (max-width: 600px) {

  /* Hero buttons — side by side, not full width */
  .hero-btns {
    flex-direction: row !important;
    flex-wrap: wrap;
    gap: 10px;
  }
  .hero-btns .btn {
    flex: 0 0 auto;
    width: auto !important;
    font-size: 12px;
    padding: 10px 16px;
  }

  /* Facility card — prevent title wrapping */
  .facility-card {
    padding: 16px;
    gap: 12px;
  }
  .facility-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    font-size: 18px;
  }
  .facility-card h4 {
    font-size: 15px;
  }
  .facility-card p {
    font-size: 13px;
  }

  /* Principal photo on homepage — natural aspect ratio */
  .principal-wrap .principal-photo {
    max-width: 220px;
    margin: 0 auto;
  }

  /* Footer — tighten spacing */
  .site-footer ul {
    gap: 4px;
  }
  .site-footer {
    padding: 36px var(--spacing-sm) 0;
  }
  .footer-grid {
    gap: 24px;
  }
  .site-footer h4 {
    margin-bottom: 10px;
  }
}


/* ── Hamburger menu — right aligned ── */
@media (max-width: 1100px) {
  .navbar {
    justify-content: space-between;
  }
  .nav-toggle {
    margin-left: auto;
    order: 3;
  }
}


/* ── Hide slider arrows on mobile ── */
@media (max-width: 600px) {
  .slider-arrow { display: none; }
}


/* ── Principal photo on mobile ── */
@media (max-width: 900px) {
  .principal-wrap .principal-photo {
    max-width: 260px;
    margin: 0 auto 24px;
  }
  .principal-wrap .principal-photo img {
    aspect-ratio: 1 / 1;
    object-position: top center;
    object-fit: cover;
  }
}


/* ── Hide topbar on mobile ── */
@media (max-width: 600px) {
  .topbar { display: none; }
}


/* ── Footer mobile gap fix ── */
@media (max-width: 600px) {
  .footer-grid {
    gap: 20px !important;
  }
  .site-footer ul {
    gap: 2px !important;
  }
  .site-footer h4 {
    margin-bottom: 6px !important;
  }
  .site-footer {
    padding-top: 32px !important;
  }
}