/* ==========================================================================
   Asraya Hero Scroll-Scrub — Design Tokens & Styles
   Brand: burnt orange #D4622A, charcoal #0c0c0a, off-white #f5f2ea
   Typography: IBM Plex Sans (body), IBM Plex Mono (labels/captions/nav)
   ========================================================================== */

/* ── CSS Custom Properties ────────────────────────────────────────────────── */
:root {
  --clr-accent: #D4622A;
  --clr-accent-hover: #e8773d;
  --clr-bg: #0c0c0a;
  --clr-text: #f5f2ea;
  --clr-text-muted: rgba(245, 242, 234, 0.55);
  --clr-nav-solid: rgba(12, 12, 10, 0.88);
  --ff-body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --ff-mono: 'IBM Plex Mono', 'SF Mono', 'Fira Code', monospace;
  --nav-height: 72px;
  --nav-padding-x: clamp(20px, 4vw, 48px);
  --nav-transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip; /* Fix for position: sticky */
}

body {
  overflow-x: clip; /* Fix for position: sticky */
}

body.hero-page {
  font-family: var(--ff-body);
  background: var(--clr-bg);
  color: var(--clr-text);
  overflow-x: hidden;
}

/* ── Site Nav ─────────────────────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--nav-padding-x);
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition:
    background var(--nav-transition),
    backdrop-filter var(--nav-transition),
    box-shadow var(--nav-transition);
}

.site-nav.is-scrolled {
  background: var(--clr-nav-solid);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  box-shadow: 0 1px 0 rgba(245, 242, 234, 0.06);
}

/* Logo */
.nav-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  text-decoration: none;
}

.nav-logo img {
  height: 36px;
  width: auto;
  display: block;
  transition: opacity 0.2s ease;
}

.nav-logo:hover img {
  opacity: 0.85;
}

/* Desktop Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.nav-links a {
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text);
  text-decoration: none;
  padding: 8px 16px;
  position: relative;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 1px;
  background: var(--clr-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a:hover {
  color: var(--clr-accent);
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* CTA Link */
.nav-links .nav-cta {
  color: var(--clr-accent);
  border: 1px solid var(--clr-accent);
  padding: 8px 20px;
  border-radius: 0;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
}

.nav-links .nav-cta::after {
  display: none;
}

.nav-links .nav-cta:hover {
  background: var(--clr-accent);
  color: var(--clr-bg);
  border-color: var(--clr-accent);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1002;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--clr-text);
  transition: transform 0.3s ease, opacity 0.2s ease;
}

.nav-hamburger span:nth-child(1) {
  margin-bottom: 6px;
}

.nav-hamburger span:nth-child(3) {
  margin-top: 6px;
}

/* Hamburger active */
.nav-hamburger.is-active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.nav-hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.is-active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ── Mobile Nav ───────────────────────────────────────────────────────────── */
.mobile-nav-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 380px;
  height: 100vh;
  height: 100dvh;
  background: rgba(12, 12, 10, 0.96);
  backdrop-filter: blur(24px) saturate(1.5);
  -webkit-backdrop-filter: blur(24px) saturate(1.5);
  z-index: 1001;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  padding: calc(var(--nav-height) + 20px) 32px 32px;
  overflow-y: auto;
}

.mobile-nav-panel.is-open {
  transform: translateX(0);
}

.mobile-nav-panel a {
  font-family: var(--ff-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text);
  text-decoration: none;
  padding: 18px 0;
  border-bottom: 1px solid rgba(245, 242, 234, 0.08);
  display: block;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.mobile-nav-panel a:hover {
  color: var(--clr-accent);
  padding-left: 8px;
}

.mobile-nav-panel .nav-cta-mobile {
  margin-top: 24px;
  color: var(--clr-accent);
  border: 1px solid var(--clr-accent);
  padding: 14px 20px;
  text-align: center;
  border-bottom: 1px solid var(--clr-accent);
  transition: background 0.25s ease, color 0.25s ease;
}

.mobile-nav-panel .nav-cta-mobile:hover {
  background: var(--clr-accent);
  color: var(--clr-bg);
}

.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.mobile-nav-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

/* ── Hero Scroll Stage ────────────────────────────────────────────────────── */
.scroll-stage {
  position: relative;
  height: 300vh;
  background: var(--clr-bg);
}

.sticky-wrap {
  position: sticky;
  top: 0;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.hero-canvas {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* First-paint static image (shows before canvas takes over) */
.hero-first-paint {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  transition: opacity 0.4s ease;
}

.hero-first-paint.is-hidden {
  opacity: 0;
  pointer-events: none;
}

/* ── Loader Overlay ───────────────────────────────────────────────────────── */
.hero-loader {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  background: #0c0c0a;
  transition: opacity 0.45s ease, visibility 0.45s ease;
}

.hero-loader.is-loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* Logo — no rings, just clean fade-in */
.loader-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.loader-logo {
  width: 64px;
  height: auto;
  opacity: 0;
  transform: translateY(5px);
  animation: loaderFadeIn 0.35s ease 0.05s forwards;
}

@keyframes loaderFadeIn {
  to { opacity: 1; transform: translateY(0); }
}

/* Progress area */
.loader-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: loaderFadeIn 0.35s ease 0.15s forwards;
}

.loader-progress {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(212, 98, 42, 0.75);
}

.loader-bar-track {
  width: 80px;
  height: 1px;
  background: rgba(245, 242, 234, 0.1);
  overflow: hidden;
  border-radius: 99px;
}

.loader-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--clr-accent);
  border-radius: 99px;
  transition: width 0.12s ease;
}

/* ── Chapters Overlay ──────────────────────────────────────────────────────── */
.hero-chapters-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.hero-chapter {
  position: absolute;
  text-align: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(30px) scale(1.05);
  filter: blur(8px);
  transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1),
              transform 0.8s cubic-bezier(0.25, 1, 0.5, 1),
              filter 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.hero-chapter.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

.hero-chapter.is-past {
  opacity: 0;
  transform: translateY(-30px) scale(0.95);
  filter: blur(4px);
}

.chapter-overline {
  font-family: var(--ff-mono);
  font-size: clamp(15px, 1.5vw, 18px);
  font-weight: 600;
  letter-spacing: 0.5em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 18px;
  display: block;
  transition: letter-spacing 0.8s cubic-bezier(0.25, 1, 0.5, 1);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.9);
}

.hero-chapter.is-active .chapter-overline {
  letter-spacing: 0.3em;
}

.chapter-headline {
  font-family: var(--ff-body);
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--clr-text);
  letter-spacing: -0.02em;
  text-shadow: 0 4px 32px rgba(0, 0, 0, 0.95), 0 2px 8px rgba(0, 0, 0, 0.9), 0 0 60px rgba(0, 0, 0, 0.5);
}

.chapter-stats {
  margin-top: 24px;
  font-family: var(--ff-mono);
  font-size: 13px;
  color: var(--clr-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.dot-separator {
  color: var(--clr-accent);
}

.chapter-cta {
  margin-top: 40px;
  display: flex;
  gap: 16px;
  justify-content: center;
}

.btn-explore, .btn-book {
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 14px 36px;
  text-decoration: none;
  border-radius: 100px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-explore {
  background: var(--clr-accent);
  color: #fff;
  border: 1.5px solid var(--clr-accent);
  box-shadow: 0 4px 20px rgba(212, 98, 42, 0.4);
}

.btn-explore:hover {
  background: transparent;
  color: var(--clr-accent);
  box-shadow: 0 4px 24px rgba(212, 98, 42, 0.2);
  transform: translateY(-2px);
}

.btn-book {
  background: rgba(255, 255, 255, 0.08);
  color: var(--clr-text);
  border: 1.5px solid rgba(245, 242, 234, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-book:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(245, 242, 234, 0.9);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

/* Scroll-down indicator */
.scroll-indicator {
  position: absolute;
  bottom: clamp(32px, 6vh, 64px);
  right: clamp(20px, 4vw, 48px);
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: opacity 0.6s ease;
}

.scroll-indicator.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.scroll-indicator-label {
  font-family: var(--ff-mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.scroll-indicator-line {
  width: 1px;
  height: 40px;
  background: var(--clr-text-muted);
  position: relative;
  overflow: hidden;
}

.scroll-indicator-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--clr-accent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0% { top: -100%; }
  50% { top: 100%; }
  100% { top: 100%; }
}

/* ── Placeholder Section (below hero) ─────────────────────────────────────── */
.section-next {
  position: relative;
  min-height: 100vh;
  background: var(--clr-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.section-next-inner {
  text-align: center;
  padding: 60px 24px;
}

.section-next-label {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 16px;
}

.section-next-title {
  font-family: var(--ff-body);
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 300;
  color: var(--clr-text);
  letter-spacing: -0.01em;
}

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .hero-caption {
    bottom: clamp(80px, 12vh, 120px);
    left: 20px;
    right: 20px;
    max-width: none;
  }

  .hero-chapter {
    padding: 0 24px;
    width: 100%;
  }

  .chapter-overline {
    font-size: 10px;
    letter-spacing: 0.25em;
  }

  .chapter-stats {
    flex-direction: column;
    gap: 6px;
    font-size: 11px;
  }

  .chapter-cta {
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
  }

  .btn-explore, .btn-book {
    width: min(220px, calc(100vw - 48px));
    max-width: 100%;
    text-align: center;
    justify-content: center;
    padding: 13px 28px;
  }

  .scroll-indicator {
    display: none;
  }
}

@media (max-width: 360px) {
  .hero-chapter {
    padding: 0 16px;
  }
  .chapter-headline {
    font-size: clamp(28px, 9vw, 40px);
  }
  .btn-explore, .btn-book {
    width: calc(100vw - 48px);
    padding: 12px 20px;
    font-size: 10px;
  }
}

@media (min-width: 769px) {
  .mobile-nav-panel,
  .mobile-nav-overlay {
    display: none !important;
  }
}

/* ── Reduced Motion ───────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .scroll-indicator-line::after {
    animation: none;
  }
}