/* ═══════════════════════════════════════════════════════════════════════════════
   LEX CHAMBERS — DESIGN SYSTEM & STYLESHEET
   Palette: Dark Charcoal (#1A1714), Gold Accent (#B08D57), Off-White (#F7F5F2)
   Typography: Playfair Display (Headings), Manrope / Inter (Body & UI)
   ═══════════════════════════════════════════════════════════════════════════════ */

/* Tailwind CDN + Core utility fallback */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

/* Root Variables */
:root {
  --color-charcoal-950: #0D0B09;
  --color-charcoal-900: #1A1714;
  --color-charcoal-800: #2B2520;
  --color-charcoal-700: #3D3830;
  --color-charcoal-600: #5C5650;
  --color-charcoal-500: #6D6052;
  --color-charcoal-400: #8A7D6E;
  --color-charcoal-300: #A89D8F;
  --color-charcoal-200: #C9C2B8;
  --color-charcoal-100: #EDE9E3;
  --color-charcoal-50:  #F7F5F2;

  --color-gold-900: #45351B;
  --color-gold-800: #614C27;
  --color-gold-700: #7D6234;
  --color-gold-600: #9A7942;
  --color-gold:     #B08D57;
  --color-gold-400: #C49A48;
  --color-gold-300: #CEAE6A;
  --color-gold-200: #DFC99A;
  --color-gold-100: #F0E4CA;
  --color-gold-50:  #F9F3E8;

  --color-off-white: #F7F5F2;
  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Manrope", "Inter", system-ui, -apple-system, sans-serif;
  --font-ui: "Inter", "Manrope", system-ui, -apple-system, sans-serif;
}

/* Base resets & typography */
html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  color: var(--color-charcoal-900);
  background-color: var(--color-off-white);
}

body {
  font-family: var(--font-body);
  color: #1A1714;
  background-color: #F7F5F2;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, .font-display {
  font-family: var(--font-display);
}

.font-body { font-family: var(--font-body); }
.font-ui { font-family: var(--font-ui); }

/* Color classes */
.bg-charcoal-950 { background-color: #0D0B09; }
.bg-charcoal-900 { background-color: #1A1714; }
.bg-charcoal-800 { background-color: #2B2520; }
.bg-charcoal-700 { background-color: #3D3830; }
.bg-charcoal-600 { background-color: #5C5650; }
.bg-charcoal-200 { background-color: #C9C2B8; }
.bg-charcoal-100 { background-color: #EDE9E3; }
.bg-off-white    { background-color: #F7F5F2; }
.bg-gold         { background-color: #B08D57; }
.bg-gold-600     { background-color: #9A7942; }
.bg-gold-700     { background-color: #7D6234; }
.bg-gold\/10     { background-color: rgba(176, 141, 87, 0.1); }
.bg-gold\/20     { background-color: rgba(176, 141, 87, 0.2); }
.bg-charcoal-950\/95 { background-color: rgba(13, 11, 9, 0.95); }
.bg-charcoal-950\/90 { background-color: rgba(13, 11, 9, 0.90); }
.bg-charcoal-950\/80 { background-color: rgba(13, 11, 9, 0.80); }
.bg-charcoal-950\/50 { background-color: rgba(13, 11, 9, 0.50); }
.bg-charcoal-950\/40 { background-color: rgba(13, 11, 9, 0.40); }
.bg-charcoal-900\/80 { background-color: rgba(26, 23, 20, 0.80); }
.bg-charcoal-900\/60 { background-color: rgba(26, 23, 20, 0.60); }

.text-charcoal-950 { color: #0D0B09; }
.text-charcoal-900 { color: #1A1714; }
.text-charcoal-800 { color: #2B2520; }
.text-charcoal-700 { color: #3D3830; }
.text-charcoal-600 { color: #5C5650; }
.text-charcoal-500 { color: #6D6052; }
.text-charcoal-400 { color: #8A7D6E; }
.text-charcoal-300 { color: #A89D8F; }
.text-charcoal-200 { color: #C9C2B8; }
.text-charcoal-100 { color: #EDE9E3; }
.text-off-white    { color: #F7F5F2; }
.text-gold         { color: #B08D57; }
.text-gold-400     { color: #C49A48; }
.text-gold-700     { color: #7D6234; }
.text-gold\/80     { color: rgba(176, 141, 87, 0.8); }

.border-gold         { border-color: #B08D57; }
.border-gold\/30     { border-color: rgba(176, 141, 87, 0.3); }
.border-charcoal-800 { border-color: #2B2520; }
.border-charcoal-700 { border-color: #3D3830; }
.border-charcoal-700\/60 { border-color: rgba(61, 56, 48, 0.6); }
.border-charcoal-700\/50 { border-color: rgba(61, 56, 48, 0.5); }
.border-charcoal-600 { border-color: #5C5650; }
.border-charcoal-200 { border-color: #C9C2B8; }
.border-charcoal-100 { border-color: #EDE9E3; }

/* Custom Shadows */
.shadow-card       { box-shadow: 0 4px 24px rgba(26, 23, 20, 0.08); }
.shadow-card-hover { box-shadow: 0 12px 40px rgba(26, 23, 20, 0.16); }
.shadow-gold       { box-shadow: 0 4px 20px rgba(176, 141, 87, 0.25); }

/* Grain Noise Overlay */
.grain-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* Kicker pattern */
.kicker {
  display: inline-block;
  color: #B08D57;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  position: relative;
}

.kicker::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 2.5rem;
  height: 2px;
  background-color: #B08D57;
}

.kicker--center {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.kicker--center::after {
  left: 50%;
  transform: translateX(-50%);
}

.gold-divider {
  width: 4rem;
  height: 2px;
  background-color: #B08D57;
  margin-left: auto;
  margin-right: auto;
  margin-top: 1.25rem;
  margin-bottom: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.25rem;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 300ms ease;
  cursor: pointer;
}

.btn:focus-visible {
  outline: 2px solid #B08D57;
  outline-offset: 2px;
}

.btn-gold {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.25rem;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.875rem;
  background-color: #B08D57;
  color: #0D0B09;
  transition: all 300ms ease;
}

.btn-gold:hover {
  background-color: #9A7942;
  color: #0D0B09;
}

.btn-gold-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.25rem;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.875rem;
  border: 2px solid #B08D57;
  color: #B08D57;
  background: transparent;
  transition: all 300ms ease;
}

.btn-gold-outline:hover {
  background-color: #B08D57;
  color: #0D0B09;
}

.btn-white-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.25rem;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.875rem;
  border: 2px solid #F7F5F2;
  color: #F7F5F2;
  background: transparent;
  transition: all 300ms ease;
}

.btn-white-outline:hover {
  background-color: #F7F5F2;
  color: #1A1714;
}

.arrow-icon {
  display: inline-block;
  transition: transform 200ms ease;
}

.btn:hover .arrow-icon, .btn-gold:hover .arrow-icon, .btn-gold-outline:hover .arrow-icon {
  transform: translateX(3px);
}

/* Card pattern */
.card {
  border-radius: 0.5rem;
  transition: all 300ms ease;
}

.card:hover {
  transform: translateY(-4px);
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #1A1714;
  overflow: hidden;
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: #FFFFFF;
  transition: box-shadow 200ms ease;
}

.nav-link {
  color: #3D3830;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.875rem;
  transition: color 200ms ease;
}

.nav-link:hover, .nav-link--active {
  color: #B08D57;
}

.topbar {
  background-color: #1A1714;
  color: #C9C2B8;
  font-size: 0.75rem;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

/* Form inputs */
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: #FFFFFF;
  border: 1px solid #C9C2B8;
  border-radius: 0.25rem;
  color: #1A1714;
  font-size: 0.875rem;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.form-input:focus {
  outline: none;
  border-color: #B08D57;
  box-shadow: 0 0 0 3px rgba(176, 141, 87, 0.25);
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 50;
  width: 3rem;
  height: 3rem;
  border-radius: 9999px;
  background-color: #B08D57;
  color: #0D0B09;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(176, 141, 87, 0.35);
  transition: all 300ms ease;
  cursor: pointer;
}

.back-to-top:hover {
  background-color: #9A7942;
  transform: translateY(-2px);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background-color: rgba(13, 11, 9, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

/* Focus and selection */
:focus-visible {
  outline: 2px solid #B08D57;
  outline-offset: 2px;
}

::selection {
  background-color: rgba(176, 141, 87, 0.25);
  color: #1A1714;
}

/* Prose customizations */
.prose h2, .prose h3, .prose h4 {
  font-family: var(--font-display);
  color: #1A1714;
  margin-top: 1.5em;
  margin-bottom: 0.5em;
}

.prose p {
  line-height: 1.75;
  margin-bottom: 1.25em;
}

.prose a {
  color: #B08D57;
  text-decoration: underline;
}

.prose a:hover {
  color: #7D6234;
}

/* ─── Page Loader ──────────────────────────────────────────────────────────── */
.loader-scales-path {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
}

@keyframes loaderWordmarkIn {
  0% {
    opacity: 0;
    transform: translateY(12px);
    letter-spacing: 0.12em;
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    letter-spacing: 0.02em;
  }
}

@keyframes loaderScalesDraw {
  0% {
    stroke-dashoffset: 200;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes loaderRuleExpand {
  0% {
    width: 0;
  }
  100% {
    width: 120px;
  }
}

@keyframes loaderFadeOut {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

/* ─── Scroll Reveal System ─────────────────────────────────────────────────── */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Hero Scroll Indicator ────────────────────────────────────────────────── */
.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  right: 2.5rem;
  z-index: 20;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  pointer-events: none;
}

.hero-scroll-line {
  width: 1.5px;
  height: 48px;
  background-color: rgba(201, 194, 184, 0.25);
  position: relative;
  overflow: hidden;
}

.hero-scroll-dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 18px;
  background: linear-gradient(to bottom, transparent, #B08D57, transparent);
  animation: scrollDotAnim 2s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

@keyframes scrollDotAnim {
  0% {
    transform: translateY(-18px);
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  80% {
    transform: translateY(48px);
    opacity: 1;
  }
  100% {
    transform: translateY(48px);
    opacity: 0;
  }
}

/* ─── Card Tilt Micro-interactions ─────────────────────────────────────────── */
.pa-card,
.team-card {
  will-change: transform;
  transform-style: preserve-3d;
}

/* ─── Button Shine-Sweep ───────────────────────────────────────────────────── */
.btn-gold,
.btn-hero-primary {
  position: relative;
  overflow: hidden;
}

.btn-gold::after,
.btn-hero-primary::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -100%;
  width: 60%;
  height: 200%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.35) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: rotate(25deg);
  transition: none;
  pointer-events: none;
}

.btn-gold:hover::after,
.btn-hero-primary:hover::after {
  left: 140%;
  transition: left 0.75s ease-in-out;
}

/* ─── Reduced-motion overrides ─────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  #page-loader,
  #page-loader * {
    animation-duration: 0.01ms !important;
    animation-delay: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .hero-scroll-indicator {
    display: none !important;
  }

  .btn-gold::after,
  .btn-hero-primary::after {
    display: none !important;
  }

  .pa-card,
  .team-card {
    transform: none !important;
    transition: none !important;
  }
}