:root {
  --color-black: #0e0e0e;
  --color-charcoal: #1c1c1c;
  --color-cream: #f7f5f2;
  --color-white: #ffffff;
  --color-gold: #a7be8a;        
  --color-gold-light: #cfe1b9;  
  --color-gray: #6e6e6e;
  --color-border: rgba(14, 14, 14, 0.1);

  --font-display: 'ALK Rounded Mtavruli Med';
  --font-body: 'Jost', 'Helvetica Neue', Arial, sans-serif;

  /* layout */
  --container-max: 1400px;
  --container-pad: clamp(1.5rem, 5vw, 5rem);
  --section-pad-y: clamp(5rem, 10vw, 9rem);

  /* motion */
  --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 0.3s;
  --dur-mid: 0.6s;
  --dur-slow: 1.1s;
}

@font-face {
    font-family: 'ALK Rounded Mtav Med';
    src: url("font/alkroundedmtav-medium.otf") format("opentype");
    font-display: swap;
}

body {
    font-family: 'ALK Rounded Mtav Med', 'Fredoka', Georgia, sans-serif;
}


@font-face {
  font-family: 'ALK Rounded Mtav Med';
  src: url(font/alkroundedmtav-medium.otf) format('opentype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
  
}


/* reest basse*/
*, *::before, *::after { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
}


html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family: var(--font-display);
  font-weight: 300;
  color: var(--color-black);
  background: var(--color-cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  font-family: 'ALK Rounded Mtav Med', sans-serif;
}

html, body {
  overflow-x: hidden;
  max-width: 100%;
}

img { 
    max-width: 100%; 
    display: block; 
}

video, iframe { max-width: 100%; }

a {
    color: inherit; 
    text-decoration: none; 
}

ul { list-style: none; }

button { 
    font-family: inherit; 
    cursor: pointer; 
    background: none; 
    border: none; 
    color: inherit;
}

input, select, textarea { 
    font-family: inherit; 
    font-size: 1rem; 
}

.about-grid > *, .school-grid > *, .contact-grid > *, .footer-grid > *,
.form-row > * {
  min-width: 0;
}

h1, h2, h3, h4 {
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}


@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

.footer-social {
    font-family: var(--font-display);
}
/*  shared utility */
.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 3.4vw, 3rem);
  margin-bottom: 1.25rem;
  
}


.section-heading.center {
  text-align: center;
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}

.section-heading.center  { margin-inline: auto; }

.btn {
  display: inline-block;
  
  padding: 1rem 2.4rem;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: background var(--dur-fast) var(--ease-premium),
              color var(--dur-fast) var(--ease-premium),
              border-color var(--dur-fast) var(--ease-premium),
              transform var(--dur-fast) var(--ease-premium);
}

.btn-primary {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}
.btn-primary:hover { background: var(--color-gold); border-color: var(--color-gold); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: currentColor;
  border-color: currentColor;
}
.btn-outline:hover { 
    background: currentColor; 
    color: var(--color-black); 
}

.but {
  display: inline-block;
  
  padding: 1rem 2.4rem;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid transparent;
  transition: background var(--dur-fast) var(--ease-premium),
              color var(--dur-fast) var(--ease-premium),
              border-color var(--dur-fast) var(--ease-premium),
              transform var(--dur-fast) var(--ease-premium);
  background: var(--color-gold);
}


.but-primary {
  background: var(--color-gold);
  color: var(--color-white);
  border-color: var(--color-black);
}

.but-primary:hover {  transform: translateY(-2px); }





/*  preload */
#preloader {
  position: fixed;
  inset: 0;
  background: var(--color-gold-light);
  color: var(--black-white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.8s var(--ease-premium), visibility 0.8s var(--ease-premium);
}
#preloader.loaded { opacity: 0; visibility: hidden; }

.preloader-mark {
  font-family: 'ALK Rounded Mtav Med';
  letter-spacing: 0.4em;
  font-size: 1.1rem;
  opacity: 0;
  animation: preloaderFade 1.4s var(--ease-premium) forwards;
}
@keyframes preloaderFade {
  0% { opacity: 0; letter-spacing: 0.8em; }
  100% { opacity: 1; letter-spacing: 0.4em; }
}

/* navbar */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.6rem 0;
  background: transparent;
  transition: background var(--dur-mid) var(--ease-premium),
              padding var(--dur-mid) var(--ease-premium),
              box-shadow var(--dur-mid) var(--ease-premium);
}
.navbar.scrolled {
  background: var(--color-gold-light);
  backdrop-filter: blur(10px);
  padding: 0.9rem 0;
  box-shadow: 0 1px 0 var(--color-border);
}
.navbar.scrolled { color: var(--color-black); }
.navbar { color: var(--color-white); }

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.navbar-logo { flex-shrink: 0; }

.logo-img { 
    height: 40px; 
    width: auto; 
    color: inherit; 
    transition: color var(--dur-mid) var(--ease-premium), filter var(--dur-mid) var(--ease-premium);
}


.navbar:not(.scrolled) .logo-img,
.site-footer .footer-logo {
  filter: brightness(0) invert(1);
}

.navbar-nav { 
    flex: 1; 
    display: flex; 
    justify-content: center; 
}

.nav-list { display: flex; gap: 2.4rem; }

.nav-link {
  position: relative;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding-bottom: 4px;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0%;
  height: 1px;
  background: currentColor;
  transition: width var(--dur-mid) var(--ease-premium);
}

.nav-link:hover::after, .nav-link.active::after { width: 100%; }

.navbar-actions { display: flex; align-items: center; gap: 1.6rem; }

.lang-switch { display: flex; align-items: center; gap: 0.4rem; font-size: 0.78rem; letter-spacing: 0.08em; }
.lang-btn { opacity: 0.55; transition: opacity var(--dur-fast) var(--ease-premium); padding: 2px; }
.lang-btn.active, .lang-btn:hover { opacity: 1; }
.lang-divider { opacity: 0.4; }

.nav-book-btn { padding: 0.7rem 1.6rem; font-size: 0.75rem; }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 26px;
  height: 20px;
}

.hamburger span {
  display: block;
  height: 1px;
  width: 100%;
  background: currentColor;
  transition: transform var(--dur-fast) var(--ease-premium), opacity var(--dur-fast) var(--ease-premium);
}
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* mobile version menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--color-gold-light);
  color: var(--color-black);
  text-transform: uppercase;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-16px);
  transition: opacity var(--dur-mid) var(--ease-premium),
              visibility var(--dur-mid) var(--ease-premium),
              transform var(--dur-mid) var(--ease-premium);
}
.mobile-menu.open { opacity: 1; visibility: visible; transform: translateY(0); }

.mobile-nav-list { text-align: center;  }
.mobile-nav-list li { overflow: hidden; margin: 0.4rem 0; }
.mobile-nav-link {
  display: inline-block;
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  font-weight: 400;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-premium), transform 0.6s var(--ease-premium), color var(--dur-fast);
}
.mobile-menu.open .mobile-nav-link { opacity: 1; transform: translateY(0); }
.mobile-nav-link:hover { color: var(--color-white); }

/* mobile nav links */
.mobile-nav-list li:nth-child(1) .mobile-nav-link { transition-delay: 0.05s; }
.mobile-nav-list li:nth-child(2) .mobile-nav-link { transition-delay: 0.1s; }
.mobile-nav-list li:nth-child(3) .mobile-nav-link { transition-delay: 0.15s; }
.mobile-nav-list li:nth-child(4) .mobile-nav-link { transition-delay: 0.2s; }
.mobile-nav-list li:nth-child(5) .mobile-nav-link { transition-delay: 0.25s; }
.mobile-nav-list li:nth-child(6) .mobile-nav-link { transition-delay: 0.3s; }
.mobile-nav-list li:nth-child(7) .mobile-nav-link { transition-delay: 0.35s; }


/*  finally hero */

.hero {
  position: relative;
  height: 100svh;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--color-white);
}


.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.08);
  animation: heroZoom 16s ease-out forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14,14,14,0.55) 0%, rgba(14,14,14,0.35) 45%, rgba(14,14,14,0.75) 100%);
}

.hero-content { position: relative; z-index: 2; max-width: 780px; }
.hero-content .eyebrow { color: var(--color-gold-light); }

.hero-title {
  font-size: clamp(2.6rem, 6.5vw, 5rem);
  color: var(--color-white);
  margin-bottom: 1.4rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  font-weight: 300;
  color: rgba(255,255,255,0.85);
  max-width: 560px;
  margin-bottom: 2.4rem;
}

.hero .reveal.in-view:nth-of-type(1) { transition-delay: 0.1s; }
.hero .reveal.in-view:nth-of-type(2) { transition-delay: 0.25s; }
.hero .reveal.in-view:nth-of-type(3) { transition-delay: 0.4s; }
.hero .reveal.in-view:nth-of-type(4) { transition-delay: 0.55s; }



/* about */
.about { padding: var(--section-pad-y) 0 4rem; }

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}

.about-image img { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
    aspect-ratio: 4/5; 
    border-radius: 3%
}

.about-text { display: flex; flex-direction: column; }
.about-text p { margin-bottom: 1.2rem; color: var(--color-charcoal); max-width: 560px; }

.about-video {
  flex: 1 1 auto;
  aspect-ratio: 16/9;
  min-height: 225px;
  overflow: hidden;
  background: var(--color-black);
  border: 1px solid var(--color-border);
  border-radius: 3%
}

.about-video iframe,
.about-video video { 
    width: 100%; 
    height: 100%; 
    object-fit: cover; 
    display: block; 
}

/*karuseli*/
.about-carousel {
  position: relative;
  width: 100%;
  aspect-ratio: 4/5;
  overflow: hidden;
  touch-action: pan-y;
  cursor: grab;
}
.about-carousel:active { cursor: grabbing; }

.about-carousel-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.55s var(--ease-premium);
}

.about-carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  object-fit: cover;
  -webkit-user-drag: none;
  user-select: none;
  pointer-events: none;
}

.about-carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(14, 14, 14, 0.35);
  color: var(--color-white);
  font-size: 0.85rem;
  opacity: 0;
  z-index: 2;
  transition: opacity var(--dur-fast) var(--ease-premium), background var(--dur-fast) var(--ease-premium);
}

.about-carousel:hover {border-radius: 3%}
.about-carousel:hover .about-carousel-arrow { opacity: 1; }
.about-carousel-arrow:hover { background: rgba(14, 14, 14, 0.6); }
.about-carousel-arrow.prev { left: 0.8rem; }
.about-carousel-arrow.next { right: 0.8rem; }


@media (hover: none) {
  .about-carousel-arrow { display: none; }
}

.about-carousel-dots {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 2;
}
.about-carousel-dots .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transition: background var(--dur-fast) var(--ease-premium), transform var(--dur-fast) var(--ease-premium);
}
.about-carousel-dots .dot.active { background: var(--color-white); transform: scale(1.3); }

/* gallery */

.gallery { padding: var(--section-pad-y) 0; background: var(--color-white); }


.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  transition: opacity 0.5s var(--ease-premium), transform 0.5s var(--ease-premium);
  
}
.gallery-item.hidden-item { display: none; }

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.9s var(--ease-premium), filter 0.9s var(--ease-premium);
  
}

.gallery-item:hover img { transform: scale(1.08); filter: brightness(0.85); }



/* lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(10, 10, 10, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-mid) var(--ease-premium), visibility var(--dur-mid) var(--ease-premium);
}
.lightbox.open { opacity: 1; visibility: visible; }

.lightbox-figure { max-width: min(90vw, 1000px); max-height: 86vh; text-align: center; }
.lightbox-figure img {
  max-width: 100%;
  max-height: 76vh;
  width: auto;
  margin-inline: auto;
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.5s var(--ease-premium), transform 0.5s var(--ease-premium);
}
.lightbox.open .lightbox-figure img { opacity: 1; transform: scale(1); }
.lightbox-figure figcaption { color: var(--color-white); font-family: var(--font-display); font-size: 1.1rem; margin-top: 1.2rem; letter-spacing: 0.03em; }

.lightbox-close, .lightbox-nav {
  position: absolute;
  color: var(--color-white);
  font-size: 1.6rem;
  opacity: 0.75;
  transition: opacity var(--dur-fast) var(--ease-premium), transform var(--dur-fast) var(--ease-premium);
}
.lightbox-close:hover, .lightbox-nav:hover { opacity: 1; }
.lightbox-close { top: 2rem; right: 2.5rem; font-size: 2.2rem; font-weight: 300; }
.lightbox-nav { top: 50%; transform: translateY(-50%); font-size: 1.3rem; padding: 0.6rem; }
.lightbox-nav:hover { transform: translateY(-50%) scale(1.15); }
.lightbox-prev { left: 1.5rem; }
.lightbox-next { right: 1.5rem; }

/* servisebi */

.services { padding: var(--section-pad-y) 0; }

.services-groups {
  display: flex;
  padding-inline: clamp(1.5rem, 5vw, 5rem);
  box-sizing: border-box;
  flex-direction: column;
  gap: clamp(3.5rem, 7vw, 5.5rem);
  max-width: 1100px;
  margin-inline: auto;
}

.services-group-title {
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gray);
  padding-bottom: 1.1rem;
  margin-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
}

.services-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    column-gap: clamp(2.5rem, 5vw, 5rem);
}

.service-row {
  display: flex;
  align-items: flex-start;
  gap: 1.4rem;
  padding: 2.2rem 0;
  border-top: 1px solid var(--color-border);
}

.services-list .service-row:nth-child(-n+2) { border-top: none; }


.service-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  margin-top: 0.25rem;
  color: var(--color-gold);
  transition: color var(--dur-fast) var(--ease-premium), transform var(--dur-mid) var(--ease-premium);
}

.service-icon svg { width: 100%; height: 100%; }

.service-title {
  position: relative;
  display: inline-block;
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 0.55rem;
  transition: color var(--dur-fast) var(--ease-premium), transform var(--dur-mid) var(--ease-premium);
}
.service-title::after {
  content: '';
  position: absolute;
  left: 0; bottom: -3px;
  width: 0%;
  height: 1px;
  background: currentColor;
  transition: width var(--dur-mid) var(--ease-premium);
}

.service-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-bottom: 0.85rem;
}
.service-meta span {
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-gray);
}

.service-desc { color: var(--color-gray); font-size: 0.92rem; max-width: 360px; }

.service-row:hover .service-icon { color: var(--color-black); transform: scale(1.12); }
.service-row:hover .service-title { color: var(--color-gold); transform: translateX(5px); }
.service-row:hover .service-title::after { width: 100%; }

/* photoskola*/
.photo-school { padding: var(--section-pad-y) 0; background: var(--color-black); color: var(--color-white); }

.school-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
}

.photo-school .eyebrow { color: var(--color-gold-light); }
.photo-school p { color: rgba(255,255,255,0.75); margin-bottom: 1.2rem; max-width: 540px; }



.school-image img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }

/* bookiing */
.booking { padding: var(--section-pad-y) 0; background: var(--color-white); }

.booking-form { max-width: 780px; margin-inline: auto; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; }

.form-group { margin-bottom: 1.6rem; }
.form-group label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray);
  margin-bottom: 0.6rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 0;
  border: none;
  border-bottom: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-black);
  transition: border-color var(--dur-fast) var(--ease-premium);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-gold);
}
.form-group textarea { resize: vertical; }

.form-submit { width: 100%; margin-top: 0.6rem; position: relative; }
.form-submit[disabled] { opacity: 0.6; cursor: not-allowed; }

.form-feedback {
  margin-top: 1.2rem;
  padding: 1rem 1.2rem;
  font-size: 0.9rem;
  display: none;
  text-align: center;
}
.form-feedback.show { display: block; }
.form-success { background: rgba(207,225,185,0.35); color: var(--color-gold); }
.form-error { background: rgba(178, 46, 46, 0.1); color: #a13030; }

/* contact */
.contact { padding: var(--section-pad-y) 0; }

.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2.5rem, 6vw, 5rem);
  align-items: stretch;
}

.contact-list { margin: 2rem 0 2.4rem; display: grid; gap: 1.4rem; }
.contact-list li { display: flex; flex-direction: column; gap: 0.3rem; }
.contact-item-label { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--color-gold); }
.contact-item-value { font-size: 1.02rem; color: var(--color-charcoal); }

.social-icons { display: flex; gap: 0.9rem; }
.social-icon {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  transition: background var(--dur-fast) var(--ease-premium), color var(--dur-fast) var(--ease-premium), border-color var(--dur-fast) var(--ease-premium), transform var(--dur-fast) var(--ease-premium);
}
.social-icon svg { width: 18px; height: 18px; }
.social-icon:hover { background: var(--color-black); color: var(--color-white); border-color: var(--color-black); transform: translateY(-3px); }

.contact-map { min-height: 320px; }
.contact-map iframe { width: 100%; height: 100%; filter: grayscale(0.4) contrast(1.05); border-radius: 4%; }

/* fexi */
.site-footer { background: var(--color-black); color: rgba(255,255,255,0.75); padding-top: 4.5rem; }

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo { height: 80px; margin-bottom: 1.2rem; color: var(--color-white); }
.footer-brand p { max-width: 320px; font-size: 0.9rem; }

.footer-links h4, .footer-social h4 {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 1.2rem;
  font-family: var(--font-body);
  font-weight: 400;
}
.footer-links ul { display: grid; gap: 0.7rem; }
.footer-links a { font-size: 0.9rem; transition: color var(--dur-fast) var(--ease-premium); }
.footer-links a:hover { color: var(--color-gold-light); }

.footer-social .social-icon { border-color: rgba(255,255,255,0.2); color: var(--color-white); }
.footer-social .social-icon:hover { background: var(--color-gold); border-color: var(--color-gold); }

.footer-bottom { text-align: center; padding: 1.6rem 0; font-size: 0.8rem; }

/* backto top*/

.back-to-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--color-black);
  color: var(--color-white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur-fast) var(--ease-premium), transform var(--dur-fast) var(--ease-premium), visibility var(--dur-fast);
  z-index: 500;
}

.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-gold); }


/* responsivce */

@media (min-width: 1920px) {
  :root { --container-max: 1600px; }
}


@media (max-width: 1024px) {
  .navbar-nav { display: none; }
  .hamburger { display: flex; }
  .about-grid, .school-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-image, .school-image { order: -1; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .services {display: flex;}
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}


@media (max-width: 900px) {
  .about-image img,
  .about-carousel,
  .school-image img { aspect-ratio: 3/4; }
}

@media (max-width: 860px) {
  .stats { grid-template-columns: repeat(2, 1fr); row-gap: 2.5rem; }
  .nav-book-btn { display: none; }
}


@media (max-width: 760px) {
  .services-list { grid-template-columns: 1fr; }
  .services-list .service-row:nth-child(-n+2) { border-top: 1px solid var(--color-border); }
  .services-list .service-row:first-child { border-top: none; }
  
}


@media (max-width: 600px) {
  .gallery-grid {grid-template-columns: repeat(1, 1fr);}
  .footer-grid { grid-template-columns: 1fr; }
  .lightbox-close { top: 1.2rem; right: 1.2rem; }
  .lightbox-nav { font-size: 1.1rem; }
  .contact-map { min-height: 260px; }
  .services {display: flex;}
}

@media (max-width: 430px) {
  .services {display: flex;}
  .gallery-grid {grid-template-columns: repeat(1, 1fr);}
}