/* ==========================================================================
   Diva Dance – Landing page
   Mobile-first. Breakpoints: 40em (640px), 56em (896px), 64em (1024px)
   ========================================================================== */

html {
  scroll-padding-top: 5rem;
}

html.nav-open,
html.nav-open body {
  overflow: hidden;
}

/* ---------- Scroll reveal ---------- */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: calc(var(--d, 0) * 120ms);
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Header ---------- */

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 50;
  padding-block: 0.75rem;
  transition: padding 0.4s var(--ease);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(14, 11, 8, 0.75), rgba(14, 11, 8, 0));
  transition: background-color 0.4s var(--ease), border-color 0.4s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  padding-block: 0.4rem;
}

.site-header.is-scrolled::before {
  background: rgba(14, 11, 8, 0.88);
  border-bottom-color: var(--c-border);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.site-header__brand {
  position: relative;
  z-index: 2;
  display: block;
  width: 104px;
  transition: width 0.4s var(--ease), opacity 0.3s var(--ease);
}

.site-header__brand:hover {
  opacity: 0.85;
}

.site-header.is-scrolled .site-header__brand {
  width: 92px;
}

.site-header__actions {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.btn--sm {
  min-height: 40px;
  padding: 0.5rem 1rem;
  font-size: 0.68rem;
  letter-spacing: 0.2em;
}

.btn--sm .icon {
  width: 1rem;
  height: 1rem;
}

/* Hamburger */

.nav-toggle {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--c-gold-light);
  transition: transform 0.4s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile navigation drawer */

.site-nav {
  position: fixed;
  inset: 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  background:
    radial-gradient(ellipse 70% 50% at 50% 40%, rgba(214, 172, 100, 0.12), transparent 70%),
    var(--c-bg);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease), visibility 0s 0.5s;
}

.nav-open .site-nav {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

.site-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: center;
}

.site-nav__list li {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.nav-open .site-nav__list li {
  opacity: 1;
  transform: none;
}

.nav-open .site-nav__list li:nth-child(2) { transition-delay: 0.08s; }
.nav-open .site-nav__list li:nth-child(3) { transition-delay: 0.16s; }
.nav-open .site-nav__list li:nth-child(4) { transition-delay: 0.24s; }

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 0.6rem 0;
  font-family: var(--f-serif);
  font-size: 2.2rem;
  color: var(--c-gold-light);
  text-decoration: none;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0.5rem;
  left: 0;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transition: transform 0.4s var(--ease);
}

.site-nav__link:hover::after,
.site-nav__link:focus-visible::after {
  transform: scaleX(1);
}

/* ---------- Social icons ---------- */

.social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.social__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--c-border);
  border-radius: 50%;
  color: var(--c-gold-light);
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.social__link:hover,
.social__link:focus-visible {
  border-color: var(--c-gold);
  background-color: var(--c-gold);
  color: var(--c-bg);
  box-shadow: 0 8px 20px -8px rgba(214, 172, 100, 0.7);
  transform: translateY(-3px);
}

.social__link .icon {
  width: 1.1rem;
  height: 1.1rem;
}

/* ---------- Hero slider ---------- */

.slider {
  position: relative;
  height: 100vh;
  height: 100svh;
  min-height: 560px;
  max-height: 980px;
  overflow: hidden;
  background: var(--c-bg);
}

.slider__track {
  position: relative;
  height: 100%;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.2s var(--ease), visibility 0s 1.2s;
}

.slide.is-active {
  z-index: 1;
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

.slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(14, 11, 8, 0.92) 0%, rgba(14, 11, 8, 0.4) 45%, rgba(14, 11, 8, 0.15) 100%);
}

.slide__media,
.slide__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.slide__media img {
  object-fit: cover;
  transform: scale(1.12);
  transition: transform 8s linear;
}

.slide.is-active .slide__media img {
  transform: scale(1);
}

.slide__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  height: 100%;
  padding-bottom: 7rem;
}

.slide__line {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

.slide.is-active .slide__line {
  opacity: 1;
  transform: none;
}

.slide.is-active .slide__line:nth-child(1) { transition-delay: 0.35s; }
.slide.is-active .slide__line:nth-child(2) { transition-delay: 0.5s; }
.slide.is-active .slide__line:nth-child(3) { transition-delay: 0.65s; }
.slide.is-active .slide__line:nth-child(4) { transition-delay: 0.8s; }

.slide__title {
  max-width: 14ch;
  margin-bottom: var(--space-2);
  font-size: clamp(2.4rem, 9.5vw, 5.2rem);
  line-height: 1.05;
}

.slide__title .gold-text {
  display: block;
}

.slide__text {
  max-width: 30rem;
  margin-bottom: var(--space-3);
  color: var(--c-text);
  opacity: 0.85;
}

/* Controls */

.slider__controls {
  position: absolute;
  right: 0;
  bottom: var(--space-3);
  left: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.slider__controls[hidden] {
  display: none;
}

.slider__dots {
  display: flex;
  gap: 0.4rem;
}

.slider__dot {
  position: relative;
  width: 40px;
  height: 32px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.slider__dot::before,
.slider__dot-bar {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  height: 2px;
  margin-top: -1px;
}

.slider__dot::before {
  right: 0;
  background: rgba(244, 223, 168, 0.25);
  transition: background-color 0.3s var(--ease);
}

.slider__dot:hover::before {
  background: rgba(244, 223, 168, 0.55);
}

.slider__dot-bar {
  width: 0;
  background: var(--c-gold-light);
}

.slider__dot.is-active .slider__dot-bar {
  animation: slider-progress var(--slider-interval, 6s) linear forwards;
}

.slider.is-paused .slider__dot.is-active .slider__dot-bar {
  animation-play-state: paused;
}

.slider.is-static .slider__dot.is-active .slider__dot-bar {
  width: 100%;
  animation: none;
}

.slider__count {
  display: none;
  margin: 0;
  font-family: var(--f-serif);
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--c-muted);
}

.slider__count span {
  color: var(--c-gold-light);
}

.slider__nav {
  display: flex;
  gap: 0.4rem;
}

.slider__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--c-border);
  border-radius: 50%;
  background: rgba(14, 11, 8, 0.35);
  color: var(--c-gold-light);
  cursor: pointer;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.slider__btn:hover,
.slider__btn:focus-visible {
  border-color: var(--c-gold);
  background: var(--c-gold);
  color: var(--c-bg);
}

.slider__btn:active {
  transform: scale(0.92);
}

.slider__btn .icon--play,
.slider.is-paused .slider__btn .icon--pause,
.slider.is-static .slider__btn .icon--pause {
  display: none;
}

.slider.is-paused .slider__btn .icon--play,
.slider.is-static .slider__btn .icon--play {
  display: block;
}

/* ---------- Marquee ---------- */

.marquee {
  overflow: hidden;
  padding-block: 1.1rem;
  border-block: 1px solid var(--c-border);
  background: var(--c-bg-soft);
}

.marquee__track {
  display: flex;
  align-items: center;
  gap: 2rem;
  width: max-content;
  animation: marquee 36s linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

.marquee__track span {
  font-family: var(--f-serif);
  font-size: 1.15rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--c-gold-light);
}

.marquee__track .marquee__sep {
  font-size: 0.8rem;
  color: var(--c-gold);
}

/* ---------- Section head ---------- */

.section__head {
  margin-bottom: var(--space-4);
}

/* ---------- Collections ---------- */

.collections__grid {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.collection {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-surface);
  color: var(--c-gold-light);
  text-decoration: none;
}

.collection img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--ease-out);
}

.collection::before {
  content: "";
  position: absolute;
  inset: 12px;
  z-index: 2;
  border: 1px solid var(--c-gold);
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.5s var(--ease), transform 0.6s var(--ease-out);
  pointer-events: none;
}

.collection::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(14, 11, 8, 0.85) 0%, rgba(14, 11, 8, 0) 60%);
  transition: opacity 0.5s var(--ease);
}

.collection__body {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: var(--space-3);
}

.collection__title {
  font-family: var(--f-serif);
  font-size: 1.8rem;
  line-height: 1.1;
}

.collection__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.collection__cta .icon {
  width: 1rem;
  height: 1rem;
  transition: transform 0.4s var(--ease);
}

.collection:hover img,
.collection:focus-visible img {
  transform: scale(1.08);
}

.collection:hover::before,
.collection:focus-visible::before {
  opacity: 1;
  transform: scale(1);
}

.collection:hover .collection__cta .icon,
.collection:focus-visible .collection__cta .icon {
  transform: translateX(6px);
}

/* ---------- Products ---------- */

.products {
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-bg-soft) 100%);
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4) var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
  text-align: left;
}

.product__media {
  position: relative;
  display: block;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--c-surface);
}

.product__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1s var(--ease-out), opacity 0.6s var(--ease);
}

.product__img--alt {
  opacity: 0;
}

.product__badge {
  position: absolute;
  top: 0.6rem;
  left: 0.6rem;
  z-index: 2;
  padding: 0.25rem 0.55rem;
  background: var(--g-gold-btn);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-bg);
  pointer-events: none;
}

.product__badge--light {
  border: 1px solid var(--c-gold);
  background: rgba(14, 11, 8, 0.6);
  color: var(--c-gold-light);
}

.product__badge--sale {
  background: #8f2c3a;
  color: #fff;
}

.product__quick {
  display: none;
}

.product__info {
  padding-top: var(--space-2);
}

.product__cat {
  margin-bottom: 0.2rem;
  font-size: 0.62rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.product__title {
  margin-bottom: 0.35rem;
  font-size: 1.15rem;
  line-height: 1.25;
}

.product__title a {
  background-image: linear-gradient(var(--c-gold), var(--c-gold));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 0 1px;
  color: var(--c-gold-light);
  text-decoration: none;
  transition: background-size 0.4s var(--ease), color 0.3s var(--ease);
}

.product__title a::after {
  content: "";
  position: absolute;
  inset: 0;
}

.product {
  position: relative;
}

.product__title a:hover,
.product__title a:focus-visible {
  background-size: 100% 1px;
  color: var(--c-gold);
}

.product__price {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--c-text);
}

.product__price-old {
  margin-left: 0.4rem;
  font-size: 0.8rem;
  color: var(--c-muted);
}

.products__more {
  margin-top: var(--space-5);
}

.products__more .icon {
  width: 1rem;
  height: 1rem;
  transition: transform 0.4s var(--ease);
}

.products__more .btn:hover .icon {
  transform: translateX(6px);
}

@media (hover: hover) {
  .product {
    transition: transform 0.5s var(--ease-out);
  }

  .product:hover {
    transform: translateY(-6px);
  }

  .product:hover .product__img {
    transform: scale(1.06);
  }

  .product:hover .product__img--alt {
    opacity: 1;
  }

  .product__quick {
    position: absolute;
    right: 0.75rem;
    bottom: 0.75rem;
    left: 0.75rem;
    z-index: 2;
    display: block;
    padding: 0.7rem;
    border: 1px solid var(--c-gold);
    background: rgba(14, 11, 8, 0.85);
    font-size: 0.66rem;
    font-weight: 600;
    letter-spacing: 0.24em;
    text-align: center;
    text-transform: uppercase;
    color: var(--c-gold-light);
    opacity: 0;
    pointer-events: none;
    transform: translateY(110%);
    transition: opacity 0.4s var(--ease), transform 0.5s var(--ease-out);
  }

  .product:hover .product__quick {
    opacity: 1;
    transform: none;
  }
}

/* ---------- About ---------- */

.about {
  border-top: 1px solid var(--c-border);
}

.about__grid {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

.about__media {
  position: relative;
  max-width: 26rem;
  margin: 0 auto;
}

.about__media::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--c-gold);
  transform: translate(14px, 14px);
  transition: transform 0.6s var(--ease-out);
}

.about__media img {
  position: relative;
  width: 100%;
  transition: transform 0.6s var(--ease-out);
}

.about__media:hover::before {
  transform: translate(22px, 22px);
}

.about__media:hover img {
  transform: translate(-6px, -6px);
}

.about__cards {
  margin-top: var(--space-3);
}

/* ---------- Why ---------- */

.why {
  border-top: 1px solid var(--c-border);
  background: var(--c-bg-soft);
}

.why__grid {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.why__item {
  position: relative;
  padding: var(--space-4) var(--space-3);
  overflow: hidden;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
  transition: border-color 0.4s var(--ease), transform 0.4s var(--ease);
}

.why__item::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(214, 172, 100, 0.18), transparent 65%);
  opacity: 0;
  transition: opacity 0.5s var(--ease);
}

.why__item:hover {
  border-color: var(--c-gold);
  transform: translateY(-4px);
}

.why__item:hover::before {
  opacity: 1;
}

.why__icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  margin-bottom: var(--space-2);
  border: 1px solid var(--c-gold);
  border-radius: 50%;
  color: var(--c-gold);
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease), transform 0.6s var(--ease-out);
}

.why__icon .icon {
  width: 1.6rem;
  height: 1.6rem;
}

.why__item:hover .why__icon {
  background: var(--c-gold);
  color: var(--c-bg);
  transform: rotate(-8deg) scale(1.06);
}

.why__title {
  position: relative;
  margin-bottom: 0.5rem;
  font-size: 1.5rem;
}

.why__item p {
  position: relative;
  margin: 0;
}

/* ---------- Footer ---------- */

.site-footer {
  padding-top: var(--space-5);
  border-top: 1px solid var(--c-border);
  font-size: 0.9rem;
  color: var(--c-muted);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-4);
}

.site-footer__brand img {
  width: 150px;
  margin-bottom: var(--space-2);
}

.site-footer__brand p {
  max-width: 22rem;
  margin-bottom: var(--space-3);
}

.site-footer__title {
  margin-bottom: var(--space-2);
  font-family: var(--f-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.site-footer__links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__links li {
  margin-bottom: 0.6rem;
}

.site-footer__links a {
  display: inline-block;
  color: var(--c-muted);
  text-decoration: none;
  transition: color 0.3s var(--ease), transform 0.3s var(--ease);
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  color: var(--c-gold-light);
  transform: translateX(4px);
}

.site-footer__contact li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.site-footer__contact .icon {
  width: 1.1rem;
  height: 1.1rem;
  color: var(--c-gold);
}

.site-footer__bottom {
  margin-top: var(--space-5);
  padding-block: var(--space-3);
  border-top: 1px solid var(--c-border);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-align: center;
}

.site-footer__bottom p {
  margin: 0;
}

/* ---------- Keyframes ---------- */

@keyframes slider-progress {
  to { width: 100%; }
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- Tablet ---------- */

@media (min-width: 40em) {
  .site-header__brand {
    width: 120px;
  }

  .site-header.is-scrolled .site-header__brand {
    width: 104px;
  }

  .slide__content {
    padding-bottom: 8rem;
  }

  .slider__count {
    display: block;
  }

  .collections__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .collection {
    aspect-ratio: 4 / 5;
  }

  .why__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 56em) {
  .products__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-5) var(--space-3);
  }

  .product__title {
    font-size: 1.3rem;
  }
}

/* ---------- Desktop ---------- */

@media (min-width: 64em) {
  html {
    scroll-padding-top: 4.5rem;
  }

  .site-header__brand {
    width: 140px;
  }

  .site-header.is-scrolled .site-header__brand {
    width: 112px;
  }

  .nav-toggle,
  .site-nav__social {
    display: none;
  }

  .site-nav {
    position: static;
    flex-direction: row;
    background: none;
    opacity: 1;
    visibility: visible;
    transition: none;
  }

  .site-nav__list {
    display: flex;
    gap: var(--space-4);
  }

  .site-nav__list li {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .site-nav__link {
    padding: 0.5rem 0;
    font-family: var(--f-sans);
    font-size: 0.74rem;
    font-weight: 500;
    letter-spacing: 0.26em;
    text-transform: uppercase;
    transition: color 0.3s var(--ease);
  }

  .site-nav__link::after {
    bottom: 0.15rem;
  }

  .site-nav__link:hover {
    color: var(--c-gold);
  }

  .slide::after {
    background: linear-gradient(90deg, rgba(14, 11, 8, 0.9) 0%, rgba(14, 11, 8, 0.55) 40%, rgba(14, 11, 8, 0.05) 75%);
  }

  .slide__content {
    justify-content: center;
    padding-bottom: 0;
  }

  .slider__controls {
    bottom: var(--space-4);
  }

  .about__grid {
    grid-template-columns: 5fr 7fr;
    gap: 6rem;
  }

  .about__media {
    max-width: none;
  }

  .about__body {
    text-align: left;
  }

  .why__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
  }

  .site-footer__grid {
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: var(--space-5);
  }
}

/* ---------- Accessibility ---------- */

@media (prefers-reduced-motion: reduce) {
  .js [data-reveal],
  .slide__line {
    opacity: 1;
    transform: none;
  }

  .slide__media img {
    transform: none;
  }

  .marquee__track {
    animation: none;
  }
}