/* ============================================================
   PREMIUM ANIMATIONS TOOLKIT - Luxury/Premium Website
   Black & Gold Color Scheme
   Performance-optimized: GPU-accelerated transforms & opacity
   ============================================================ */

/* ----------------------------------------------------------
   CSS CUSTOM PROPERTIES (Design Tokens)
   ---------------------------------------------------------- */
:root {
  /* Luxury Color Palette */
  --gold: #c9a84c;
  --gold-light: #e8d48b;
  --gold-dark: #a07c1c;
  --black: #0a0a0a;
  --black-soft: #1a1a1a;
  --black-card: #111111;
  --white: #f5f5f0;
  --white-muted: #b0b0a8;
  --overlay: rgba(10, 10, 10, 0.85);

  /* Animation Timing */
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-quart: cubic-bezier(0.165, 0.84, 0.44, 1);
  --ease-in-out-circ: cubic-bezier(0.785, 0.135, 0.15, 0.86);
  --ease-elastic: cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Duration Tokens */
  --duration-fast: 0.3s;
  --duration-normal: 0.6s;
  --duration-slow: 1s;
  --duration-reveal: 1.2s;
}

/* ----------------------------------------------------------
   ACCESSIBILITY: Respect user motion preferences
   ---------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}


/* ============================================================
   1. SCROLL-TRIGGERED ANIMATIONS (CSS Classes)
      Used with Intersection Observer (see JS file)
   ============================================================ */

/* --- Fade In Up --- */
.anim-fade-up {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
  will-change: opacity, transform;
}
.anim-fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Fade In Down --- */
.anim-fade-down {
  opacity: 0;
  transform: translateY(-60px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
  will-change: opacity, transform;
}
.anim-fade-down.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Fade In Left --- */
.anim-fade-left {
  opacity: 0;
  transform: translateX(-80px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
  will-change: opacity, transform;
}
.anim-fade-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* --- Fade In Right --- */
.anim-fade-right {
  opacity: 0;
  transform: translateX(80px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
  will-change: opacity, transform;
}
.anim-fade-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* --- Scale In --- */
.anim-scale-in {
  opacity: 0;
  transform: scale(0.85);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
  will-change: opacity, transform;
}
.anim-scale-in.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* --- Blur In --- */
.anim-blur-in {
  opacity: 0;
  filter: blur(12px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              filter var(--duration-slow) var(--ease-out-expo);
}
.anim-blur-in.is-visible {
  opacity: 1;
  filter: blur(0);
}

/* --- Stagger Delays (apply to children) --- */
.stagger-children > *:nth-child(1) { transition-delay: 0s; }
.stagger-children > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-children > *:nth-child(4) { transition-delay: 0.3s; }
.stagger-children > *:nth-child(5) { transition-delay: 0.4s; }
.stagger-children > *:nth-child(6) { transition-delay: 0.5s; }
.stagger-children > *:nth-child(7) { transition-delay: 0.6s; }
.stagger-children > *:nth-child(8) { transition-delay: 0.7s; }


/* ============================================================
   1b. CSS SCROLL-DRIVEN ANIMATIONS (Modern, no JS needed)
       Works in Chrome 115+, Safari 26+, Firefox 136+
   ============================================================ */

/* --- Fade in on scroll using view() timeline --- */
.anim-scroll-fade {
  animation: scrollFadeIn linear both;
  animation-timeline: view();
  animation-range: entry 0% entry 100%;
}

@keyframes scrollFadeIn {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Scale up on scroll --- */
.anim-scroll-scale {
  animation: scrollScaleIn linear both;
  animation-timeline: view();
  animation-range: entry 0% entry 80%;
}

@keyframes scrollScaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* --- Slide in from left on scroll --- */
.anim-scroll-slide-left {
  animation: scrollSlideLeft linear both;
  animation-timeline: view();
  animation-range: entry 0% entry 100%;
}

@keyframes scrollSlideLeft {
  from {
    opacity: 0;
    transform: translateX(-100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* --- Parallax via scroll-driven animation (pure CSS!) --- */
.anim-scroll-parallax {
  animation: scrollParallax linear both;
  animation-timeline: view();
  animation-range: cover 0% cover 100%;
}

@keyframes scrollParallax {
  from {
    transform: translateY(-80px);
  }
  to {
    transform: translateY(80px);
  }
}


/* ============================================================
   2. TEXT REVEAL ANIMATIONS
   ============================================================ */

/* --- Slide Up Reveal (line by line) --- */
.text-reveal {
  overflow: hidden;
  display: inline-block;
}
.text-reveal__inner {
  display: inline-block;
  transform: translateY(105%);
  transition: transform var(--duration-reveal) var(--ease-out-expo);
  will-change: transform;
}
.text-reveal.is-visible .text-reveal__inner {
  transform: translateY(0);
}

/* --- Clip Reveal (wipe from bottom) --- */
.text-clip-reveal {
  clip-path: inset(100% 0 0 0);
  transition: clip-path var(--duration-reveal) var(--ease-out-expo);
}
.text-clip-reveal.is-visible {
  clip-path: inset(0 0 0 0);
}

/* --- Typewriter Effect (pure CSS) --- */
.typewriter {
  font-family: 'Playfair Display', serif;
  color: var(--gold);
  overflow: hidden;
  border-right: 2px solid var(--gold);
  white-space: nowrap;
  width: 0;
  animation: typewriter-expand 3s var(--ease-out-quart) forwards,
             typewriter-blink 0.7s step-end infinite;
}

@keyframes typewriter-expand {
  to { width: 100%; }
}

@keyframes typewriter-blink {
  50% { border-color: transparent; }
}

/* --- Gold Gradient Sweep on Text --- */
.text-gold-sweep {
  background: linear-gradient(
    90deg,
    var(--gold-dark) 0%,
    var(--gold-light) 50%,
    var(--gold-dark) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: goldSweep 3s ease-in-out infinite;
}

@keyframes goldSweep {
  0% { background-position: 200% center; }
  100% { background-position: -200% center; }
}

/* --- Letter Spacing Reveal --- */
.text-spacing-reveal {
  letter-spacing: 1em;
  opacity: 0;
  transition: letter-spacing var(--duration-reveal) var(--ease-out-expo),
              opacity var(--duration-slow) var(--ease-smooth);
}
.text-spacing-reveal.is-visible {
  letter-spacing: 0.15em;
  opacity: 1;
}


/* ============================================================
   3. PARALLAX SCROLLING EFFECTS (Pure CSS)
   ============================================================ */

/* --- Container for 3D Parallax --- */
.parallax-container {
  height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  perspective: 1px;
  perspective-origin: center center;
  -webkit-overflow-scrolling: touch;
}

/* --- Deep parallax layer (moves slowest) --- */
.parallax-deep {
  position: absolute;
  inset: 0;
  transform: translateZ(-2px) scale(3);
  z-index: -2;
}

/* --- Mid parallax layer --- */
.parallax-mid {
  position: absolute;
  inset: 0;
  transform: translateZ(-1px) scale(2);
  z-index: -1;
}

/* --- Foreground (no parallax, normal speed) --- */
.parallax-front {
  position: relative;
  transform: translateZ(0);
  z-index: 1;
}

/* --- Simple background parallax (fixed attachment) --- */
.parallax-bg {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  min-height: 60vh;
}

/* iOS fallback: fixed attachment doesn't work on iOS Safari */
@supports (-webkit-touch-callout: none) {
  .parallax-bg {
    background-attachment: scroll;
  }
}


/* ============================================================
   4. ELEGANT HOVER EFFECTS - Cards & Buttons
   ============================================================ */

/* --- Luxury Card --- */
.luxury-card {
  background: var(--black-card);
  border: 1px solid rgba(201, 168, 76, 0.1);
  border-radius: 2px;
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--duration-fast) var(--ease-smooth),
              border-color var(--duration-fast) var(--ease-smooth),
              box-shadow var(--duration-fast) var(--ease-smooth);
  will-change: transform;
}

.luxury-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(201, 168, 76, 0) 0%,
    rgba(201, 168, 76, 0.05) 50%,
    rgba(201, 168, 76, 0) 100%
  );
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}

.luxury-card:hover {
  transform: translateY(-8px);
  border-color: rgba(201, 168, 76, 0.3);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4),
              0 0 40px rgba(201, 168, 76, 0.06);
}

.luxury-card:hover::before {
  opacity: 1;
}

/* --- Gold Border Trace on Hover --- */
.card-border-trace {
  position: relative;
  background: var(--black-card);
  padding: 2rem;
  overflow: hidden;
}

.card-border-trace::before,
.card-border-trace::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
}

.card-border-trace::before {
  border-top: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: scaleX(0);
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.card-border-trace::after {
  border-left: 2px solid var(--gold);
  border-right: 2px solid var(--gold);
  transform: scaleY(0);
  transition: transform var(--duration-normal) var(--ease-out-expo) 0.15s;
}

.card-border-trace:hover::before {
  transform: scaleX(1);
}

.card-border-trace:hover::after {
  transform: scaleY(1);
}

/* --- Premium Button --- */
.btn-premium {
  display: inline-block;
  position: relative;
  padding: 1rem 3rem;
  font-family: 'Playfair Display', serif;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  background: transparent;
  border: 1px solid var(--gold);
  cursor: pointer;
  overflow: hidden;
  transition: color var(--duration-fast) var(--ease-smooth);
  z-index: 1;
}

.btn-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-normal) var(--ease-out-expo);
  z-index: -1;
}

.btn-premium:hover {
  color: var(--black);
}

.btn-premium:hover::before {
  transform: scaleX(1);
  transform-origin: left;
}

/* --- Button with Shine Effect --- */
.btn-shine {
  display: inline-block;
  position: relative;
  padding: 1rem 3rem;
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--black);
  background: linear-gradient(135deg, var(--gold-dark), var(--gold), var(--gold-light));
  border: none;
  cursor: pointer;
  overflow: hidden;
}

.btn-shine::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -75%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transform: skewX(-25deg);
  transition: left 0.8s var(--ease-out-expo);
}

.btn-shine:hover::after {
  left: 125%;
}

/* --- Underline Expand Hover (for links) --- */
.link-underline {
  position: relative;
  color: var(--gold);
  text-decoration: none;
}

.link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-fast) var(--ease-out-expo);
}

.link-underline:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}


/* ============================================================
   5. LOADING / INTRO ANIMATIONS
   ============================================================ */

/* --- Luxury Preloader Overlay --- */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--black);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.8s var(--ease-smooth),
              visibility 0.8s;
}

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

/* --- Gold Spinning Ring --- */
.preloader__ring {
  width: 60px;
  height: 60px;
  border: 2px solid transparent;
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spinRing 1s linear infinite;
}

.preloader__ring::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 2px solid transparent;
  border-top-color: var(--gold-light);
  border-radius: 50%;
  animation: spinRing 0.6s linear infinite reverse;
}

@keyframes spinRing {
  to { transform: rotate(360deg); }
}

/* --- Luxury Logo Reveal --- */
.intro-logo {
  opacity: 0;
  transform: scale(0.8);
  animation: logoReveal 1.5s var(--ease-out-expo) 0.3s forwards;
}

@keyframes logoReveal {
  0% {
    opacity: 0;
    transform: scale(0.8);
    filter: blur(10px);
  }
  100% {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
  }
}

/* --- Curtain Intro (splits open) --- */
.intro-curtain {
  position: fixed;
  inset: 0;
  z-index: 9998;
  pointer-events: none;
}

.intro-curtain__left,
.intro-curtain__right {
  position: absolute;
  top: 0;
  width: 50%;
  height: 100%;
  background: var(--black);
  transition: transform 1.2s var(--ease-in-out-circ);
}

.intro-curtain__left {
  left: 0;
}

.intro-curtain__right {
  right: 0;
}

.intro-curtain.is-open .intro-curtain__left {
  transform: translateX(-100%);
}

.intro-curtain.is-open .intro-curtain__right {
  transform: translateX(100%);
}

/* --- Horizontal Line Expand (decorative) --- */
.line-expand {
  width: 0;
  height: 1px;
  background: var(--gold);
  margin: 2rem auto;
  animation: lineExpand 1.5s var(--ease-out-expo) 0.5s forwards;
}

@keyframes lineExpand {
  to { width: 120px; }
}

/* --- Staggered Fade In for Hero Content --- */
.hero-stagger > * {
  opacity: 0;
  transform: translateY(30px);
  animation: heroFadeIn 0.8s var(--ease-out-expo) forwards;
}

.hero-stagger > *:nth-child(1) { animation-delay: 0.3s; }
.hero-stagger > *:nth-child(2) { animation-delay: 0.5s; }
.hero-stagger > *:nth-child(3) { animation-delay: 0.7s; }
.hero-stagger > *:nth-child(4) { animation-delay: 0.9s; }
.hero-stagger > *:nth-child(5) { animation-delay: 1.1s; }

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


/* ============================================================
   6. SMOOTH SECTION TRANSITIONS
   ============================================================ */

/* --- Diagonal Section Divider --- */
.section-divider-diagonal {
  position: relative;
}

.section-divider-diagonal::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 0;
  width: 100%;
  height: 120px;
  background: var(--black);
  clip-path: polygon(0 0, 100% 40%, 100% 100%, 0 100%);
  z-index: 2;
}

/* --- Gold Line Separator (animates on scroll) --- */
.section-gold-line {
  position: relative;
  padding: 6rem 0;
}

.section-gold-line::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 200px;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--gold),
    transparent
  );
  transition: transform var(--duration-reveal) var(--ease-out-expo);
}

.section-gold-line.is-visible::before {
  transform: translateX(-50%) scaleX(1);
}

/* --- Fade Section (fades between sections) --- */
.section-fade {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

.section-fade.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Wipe Transition (clip-path) --- */
.section-wipe {
  clip-path: inset(0 0 100% 0);
  transition: clip-path var(--duration-reveal) var(--ease-out-expo);
}

.section-wipe.is-visible {
  clip-path: inset(0 0 0 0);
}


/* ============================================================
   7. COUNTER / NUMBER ANIMATIONS (Pure CSS)
   ============================================================ */

/* Uses CSS @property for smooth number interpolation */
@property --counter-value {
  syntax: '<integer>';
  initial-value: 0;
  inherits: false;
}

.counter-number {
  --counter-value: 0;
  counter-reset: num var(--counter-value);
  font-variant-numeric: tabular-nums;
  font-family: 'Playfair Display', serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--gold);
}

.counter-number::after {
  content: counter(num);
}

/* Animate to specific targets via inline custom property */
.counter-number.is-visible {
  animation: countUp 2.5s var(--ease-out-quart) forwards;
}

/* Default target: 100 (override with --counter-target inline) */
@keyframes countUp {
  to {
    --counter-value: var(--counter-target, 100);
  }
}

/* --- Odometer / Filmstrip Style Counter --- */
.odometer-digit {
  display: inline-block;
  height: 1.2em;
  overflow: hidden;
  line-height: 1.2em;
}

.odometer-digit__track {
  display: flex;
  flex-direction: column;
  transition: transform 2s var(--ease-out-expo);
}

/* JS sets --digit-value to the target digit (0-9) */
.odometer-digit__track {
  transform: translateY(calc(var(--digit-value, 0) * -1.2em));
}


/* ============================================================
   8. IMAGE REVEAL ANIMATIONS
   ============================================================ */

/* --- Curtain Reveal (gold overlay slides away) --- */
.img-curtain-reveal {
  position: relative;
  overflow: hidden;
  display: inline-block;
}

.img-curtain-reveal::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform: scaleX(1);
  transform-origin: right;
  transition: transform var(--duration-reveal) var(--ease-out-expo);
  z-index: 1;
}

.img-curtain-reveal.is-visible::after {
  transform: scaleX(0);
  transform-origin: left;
}

.img-curtain-reveal img {
  display: block;
  transform: scale(1.3);
  transition: transform var(--duration-reveal) var(--ease-out-expo) 0.2s;
}

.img-curtain-reveal.is-visible img {
  transform: scale(1);
}

/* --- Vertical Curtain (slides up) --- */
.img-curtain-up {
  position: relative;
  overflow: hidden;
  display: inline-block;
}

.img-curtain-up::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--black);
  transform-origin: bottom;
  transition: transform var(--duration-reveal) var(--ease-out-expo);
  z-index: 1;
}

.img-curtain-up.is-visible::after {
  transform: scaleY(0);
  transform-origin: top;
}

/* --- Clip Path Reveal (circular) --- */
.img-clip-circle {
  clip-path: circle(0% at 50% 50%);
  transition: clip-path var(--duration-reveal) var(--ease-out-expo);
}

.img-clip-circle.is-visible {
  clip-path: circle(75% at 50% 50%);
}

/* --- Clip Path Reveal (diagonal wipe) --- */
.img-clip-diagonal {
  clip-path: polygon(0 0, 0 0, 0 100%, 0 100%);
  transition: clip-path var(--duration-reveal) var(--ease-out-expo);
}

.img-clip-diagonal.is-visible {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

/* --- Fade Scale Reveal --- */
.img-fade-scale {
  opacity: 0;
  transform: scale(1.1);
  transition: opacity var(--duration-slow) var(--ease-smooth),
              transform var(--duration-reveal) var(--ease-out-expo);
}

.img-fade-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* --- Image Hover Zoom (for galleries) --- */
.img-hover-zoom {
  overflow: hidden;
  display: inline-block;
}

.img-hover-zoom img {
  display: block;
  transition: transform 0.8s var(--ease-out-expo);
  will-change: transform;
}

.img-hover-zoom:hover img {
  transform: scale(1.08);
}

/* --- Image Hover with Gold Overlay --- */
.img-hover-overlay {
  position: relative;
  overflow: hidden;
  display: inline-block;
}

.img-hover-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(201, 168, 76, 0.4) 0%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-smooth);
}

.img-hover-overlay:hover::after {
  opacity: 1;
}


/* ============================================================
   10. SMOOTH SCROLLING NAVIGATION
   ============================================================ */

/* --- Smooth scroll behavior --- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px; /* offset for fixed nav */
}

/* --- Fixed Navigation Bar --- */
.nav-luxury {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.5rem 3rem;
  background: transparent;
  transition: background var(--duration-fast) var(--ease-smooth),
              padding var(--duration-fast) var(--ease-smooth),
              backdrop-filter var(--duration-fast) var(--ease-smooth);
}

.nav-luxury.is-scrolled {
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.8rem 3rem;
  border-bottom: 1px solid rgba(201, 168, 76, 0.1);
}

/* --- Nav Link Hover --- */
.nav-luxury__link {
  position: relative;
  color: var(--white);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.5rem 0;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.nav-luxury__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration-fast) var(--ease-out-expo);
}

.nav-luxury__link:hover {
  color: var(--gold);
}

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

.nav-luxury__link.is-active {
  color: var(--gold);
}

.nav-luxury__link.is-active::after {
  transform: scaleX(1);
}


/* ============================================================
   UTILITY CLASSES
   ============================================================ */

/* Delay utilities */
.delay-100 { transition-delay: 0.1s; animation-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; animation-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; animation-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; animation-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; animation-delay: 0.5s; }
.delay-600 { transition-delay: 0.6s; animation-delay: 0.6s; }
.delay-700 { transition-delay: 0.7s; animation-delay: 0.7s; }
.delay-800 { transition-delay: 0.8s; animation-delay: 0.8s; }
.delay-1000 { transition-delay: 1s; animation-delay: 1s; }

/* Duration utilities */
.duration-fast { transition-duration: var(--duration-fast); }
.duration-normal { transition-duration: var(--duration-normal); }
.duration-slow { transition-duration: var(--duration-slow); }