/* ============================================
   Belsomar — Coming Soon Page
   Immersive full-screen composition with
   photographic crossfade background
   ============================================ */

:root {
  --color-ink: #0a0f17;
  --color-ink-light: #141c28;
  --color-gold: #d4af37;
  --color-gold-soft: #c9a857;
  --color-text: #ffffff;
  --color-text-dim: rgba(255, 255, 255, 0.72);
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition-fast: 200ms ease;
  --transition-slow: 1.6s ease-in-out;
  --easing-editorial: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  font-family: var(--font-base);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-ink);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background layers */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  opacity: 0;
  transition: opacity var(--transition-slow);
  will-change: opacity;
}

.bg-layer--1 {
  background-image: url('../img/belsomar-bg-01.webp');
}

.bg-layer--2 {
  background-image: url('../img/belsomar-bg-02.webp');
}

.bg-layer--3 {
  background-image: url('../img/belsomar-bg-03.webp');
}

.no-js .bg-layer--1,
.bg-layer.is-active {
  opacity: 1;
}

/* Dark overlay with subtle vignette */
.bg-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at center, rgba(10, 15, 23, 0.32) 0%, rgba(10, 15, 23, 0.66) 100%),
    linear-gradient(180deg, rgba(10, 15, 23, 0.42) 0%, rgba(10, 15, 23, 0.72) 100%);
  pointer-events: none;
}

/* Skip link — fully hidden until keyboard focus */
.skip-link {
  position: absolute;
  top: 0;
  left: 1.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-text);
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 600;
  border-radius: 2px;
  z-index: 100;
  transform: translateY(-150%);
  transition: transform var(--transition-fast);
}

.skip-link:focus-visible {
  transform: translateY(1.5rem);
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

/* Language switcher */
.lang-switcher {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 10;
}

.lang-switcher__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-width: 4.25rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--color-text);
  background: rgba(10, 15, 23, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 9999px;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast);
}

.lang-switcher__toggle:hover,
.lang-switcher__toggle:focus-visible,
.lang-switcher:hover .lang-switcher__toggle,
.lang-switcher:focus-within .lang-switcher__toggle {
  background: rgba(10, 15, 23, 0.7);
  border-color: rgba(255, 255, 255, 0.25);
}

.lang-switcher__toggle:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

.lang-switcher__chevron {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.lang-switcher:hover .lang-switcher__chevron,
.lang-switcher:focus-within .lang-switcher__chevron,
.lang-switcher__toggle[aria-expanded="true"] .lang-switcher__chevron {
  transform: rotate(180deg);
}

.lang-switcher__menu {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.35rem;
  min-width: 4.25rem;
  background: rgba(10, 15, 23, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.75rem;
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.4rem);
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    visibility var(--transition-fast);
}

.lang-switcher:hover .lang-switcher__menu,
.lang-switcher:focus-within .lang-switcher__menu,
.lang-switcher__toggle[aria-expanded="true"] + .lang-switcher__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-switcher__option {
  padding: 0.45rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  line-height: 1;
  color: rgba(255, 255, 255, 0.75);
  background: transparent;
  border: none;
  border-radius: 9999px;
  text-align: center;
  cursor: pointer;
  transition:
    color var(--transition-fast),
    background var(--transition-fast);
}

.lang-switcher__option:hover,
.lang-switcher__option:focus-visible {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.08);
}

.lang-switcher__option:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

.lang-switcher__option[aria-pressed="true"] {
  color: var(--color-ink);
  background: var(--color-gold);
}

/* Visually hidden text for accessible headings */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Main content */
.main {
  position: relative;
  z-index: 2;
  flex: 1;
  display: flex;
  align-items: center;
  padding: 4rem 1.5rem 5rem;
}

.hero {
  width: 100%;
  max-width: 54rem;
  margin: 0 auto;
  text-align: center;
}

/* Tag */
.tag {
  display: inline-block;
  margin-bottom: 1.5rem;
  padding: 0.4rem 1rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  border: 1px solid rgba(212, 175, 55, 0.45);
  border-radius: 9999px;
}

/* Logo and typography */
.hero__logo {
  display: block;
  width: min(72vw, 520px);
  height: auto;
  margin: 0 auto 1.25rem;
}

.hero__subtitle {
  margin: 0 0 2.5rem;
  font-size: clamp(1.125rem, 2.8vw, 1.625rem);
  font-weight: 400;
  line-height: 1.45;
  color: var(--color-text-dim);
}

.hero__body {
  margin: 0 auto 2.75rem;
  max-width: 36rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-dim);
}

.hero__body p {
  margin: 0 0 1rem;
}

.hero__body p:last-child {
  margin-bottom: 0;
}

/* Refined CTA link */
.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 0.875rem;
  position: relative;
  padding: 0.5rem 0;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-gold);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.cta-link__text {
  position: relative;
}

.cta-link__line {
  position: absolute;
  bottom: 0.35rem;
  left: 0;
  width: calc(100% - 1.75rem);
  height: 1px;
  background: currentColor;
  transform: scaleX(1);
  transform-origin: left;
  transition: transform 0.55s var(--easing-editorial);
}

.cta-link__arrow {
  flex-shrink: 0;
  transform: translateX(0);
  transition: transform 0.45s var(--easing-editorial);
}

.cta-link:hover,
.cta-link:focus {
  color: var(--color-text);
}

.cta-link:hover .cta-link__line,
.cta-link:focus .cta-link__line {
  transform: scaleX(0);
  transform-origin: right;
}

.cta-link:hover .cta-link__arrow,
.cta-link:focus .cta-link__arrow {
  transform: translateX(0.35rem);
}

.cta-link:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 6px;
  border-radius: 2px;
}

/* Footer */
.site-footer {
  position: relative;
  z-index: 2;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
}

.site-footer p {
  margin: 0;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .bg-layer {
    transition: none;
  }

  .cta-link__line,
  .cta-link__arrow {
    transition: none;
  }
}

/* Larger screens */
@media (min-width: 768px) {
  .lang-switcher {
    top: 2rem;
    right: 2.5rem;
  }

  .lang-switcher__toggle,
  .lang-switcher__option,
  .lang-switcher__menu {
    font-size: 0.8125rem;
  }

  .lang-switcher__toggle,
  .lang-switcher__menu {
    min-width: 4.5rem;
  }

  .main {
    padding: 5rem 2.5rem 6rem;
  }

  .hero__logo {
    margin-bottom: 1.5rem;
  }

  .hero__body {
    font-size: 1.0625rem;
  }

  .site-footer {
    padding: 2rem 2.5rem;
  }
}

@media (min-width: 1024px) {
  .main {
    padding: 6rem 3rem 7rem;
  }

  .hero__subtitle {
    margin-bottom: 3rem;
  }

  .hero__body {
    margin-bottom: 3.25rem;
  }
}