/* ============================================================
   OEI HONG LEONG — Premium Corporate Design System
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-black: #0a0a0a;
  --color-charcoal: #1a1a1a;
  --color-dark: #111111;
  --color-dark-surface: #161616;
  --color-dark-elevated: #1e1e1e;
  --color-dark-border: #2a2a2a;
  --color-gold: #c9a84c;
  --color-gold-light: #d4b968;
  --color-gold-dark: #a8893a;
  --color-gold-muted: rgba(201, 168, 76, 0.15);
  --color-ivory: #f5f0e8;
  --color-white: #fafafa;
  --color-text: #e8e4dc;
  --color-text-muted: #8a8578;
  --color-text-dim: #5a5650;
  --color-glass: rgba(255, 255, 255, 0.04);
  --color-glass-border: rgba(255, 255, 255, 0.08);
  --color-glass-hover: rgba(255, 255, 255, 0.07);

  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);

  --nav-height: 80px;
  --section-pad: clamp(80px, 10vw, 160px);
  --content-max: 1400px;
  --content-narrow: 900px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--color-black);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s var(--ease-smooth);
}

ul, ol {
  list-style: none;
}

::selection {
  background: var(--color-gold);
  color: var(--color-black);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.15;
  color: var(--color-ivory);
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  letter-spacing: -0.015em;
}

h3 {
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  letter-spacing: -0.01em;
}

h4 {
  font-size: clamp(1.2rem, 1.8vw, 1.6rem);
}

h5 {
  font-size: 1.1rem;
  font-family: var(--font-sans);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-gold);
}

p {
  font-size: clamp(0.95rem, 1.1vw, 1.1rem);
  color: var(--color-text-muted);
  max-width: 72ch;
}

.lead-text {
  font-size: clamp(1.1rem, 1.4vw, 1.35rem);
  line-height: 1.8;
  color: var(--color-text);
}

.section-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.section-label::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--color-gold);
}

.section-number {
  font-family: var(--font-serif);
  font-size: clamp(5rem, 10vw, 10rem);
  color: rgba(201, 168, 76, 0.06);
  font-weight: 400;
  line-height: 1;
  position: absolute;
  top: -20px;
  left: -10px;
  pointer-events: none;
  user-select: none;
}

/* --- Password Gate --- */
.password-gate {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-black);
  transition: opacity 0.8s var(--ease-out-expo), visibility 0.8s;
}

.password-gate.unlocked {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.gate-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.gate-bg canvas {
  width: 100%;
  height: 100%;
}

.gate-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px;
}

.gate-monogram {
  width: 60px;
  height: 60px;
  border: 1px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 40px;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-gold);
  opacity: 0.8;
}

.gate-title {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: var(--color-text-muted);
  margin-bottom: 48px;
}

.gate-input-wrap {
  position: relative;
  width: 320px;
  margin: 0 auto 20px;
}

.gate-input-wrap input {
  width: 100%;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-dark-border);
  border-radius: 2px;
  color: var(--color-ivory);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  letter-spacing: 0.15em;
  text-align: center;
  outline: none;
  transition: all 0.4s var(--ease-smooth);
}

.gate-input-wrap input::placeholder {
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
}

.gate-input-wrap input:focus {
  border-color: var(--color-gold-dark);
  background: rgba(201, 168, 76, 0.03);
  box-shadow: 0 0 40px rgba(201, 168, 76, 0.08);
}

.gate-input-wrap.error input {
  border-color: #8b3a3a;
  animation: gateShake 0.5s var(--ease-smooth);
}

.gate-error-msg {
  font-size: 0.75rem;
  color: #c27a7a;
  opacity: 0;
  transition: opacity 0.3s;
  margin-top: 12px;
}

.gate-error-msg.visible {
  opacity: 1;
}

.gate-enter-btn {
  display: inline-block;
  margin-top: 28px;
  padding: 12px 48px;
  background: transparent;
  border: 1px solid var(--color-dark-border);
  color: var(--color-text-muted);
  font-family: var(--font-sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  cursor: pointer;
  transition: all 0.4s var(--ease-smooth);
}

.gate-enter-btn:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  box-shadow: 0 0 30px rgba(201, 168, 76, 0.1);
}

@keyframes gateShake {
  0%, 100% { transform: translateX(0); }
  15% { transform: translateX(-8px); }
  30% { transform: translateX(7px); }
  45% { transform: translateX(-6px); }
  60% { transform: translateX(5px); }
  75% { transform: translateX(-3px); }
  90% { transform: translateX(2px); }
}

/* --- Navigation --- */
.main-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 clamp(24px, 4vw, 60px);
  transition: all 0.5s var(--ease-smooth);
  background: transparent;
}

.main-nav.scrolled {
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-glass-border);
  height: 64px;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--color-ivory);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-logo-mark {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--color-gold);
  transition: all 0.3s;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}

.nav-links a {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  position: relative;
  padding: 4px 0;
  transition: color 0.3s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width 0.4s var(--ease-out-expo);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-ivory);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1002;
}

.nav-toggle span {
  width: 24px;
  height: 1px;
  background: var(--color-ivory);
  transition: all 0.3s var(--ease-smooth);
}

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* Mobile Nav Overlay */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1001;
  background: rgba(10, 10, 10, 0.98);
  backdrop-filter: blur(30px);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 32px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.5s var(--ease-smooth);
}

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

.mobile-nav a {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--color-text-muted);
  transition: color 0.3s;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-gold);
}

/* --- Hero Sections --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  padding: 0 clamp(24px, 5vw, 80px) clamp(60px, 10vh, 120px);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10, 10, 10, 0.95) 0%,
    rgba(10, 10, 10, 0.6) 40%,
    rgba(10, 10, 10, 0.3) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--content-max);
  width: 100%;
}

.hero-content h1 {
  margin-bottom: 24px;
}

.hero-content .lead-text {
  max-width: 600px;
  margin-bottom: 40px;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 40px;
  right: clamp(24px, 5vw, 80px);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.hero-scroll-hint span {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-dim);
  writing-mode: vertical-rl;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: var(--color-dark-border);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-gold);
  animation: scrollDown 2s var(--ease-smooth) infinite;
}

@keyframes scrollDown {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* --- Page Hero (Inner Pages) --- */
.page-hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--nav-height) + 40px) clamp(24px, 5vw, 80px) clamp(60px, 8vh, 100px);
  background: var(--color-dark);
  overflow: hidden;
}

.page-hero-deco {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  opacity: 0.03;
  background: radial-gradient(circle at 70% 30%, var(--color-gold), transparent 70%);
}

.page-hero .hero-content {
  max-width: var(--content-max);
}

.page-hero h1 {
  margin-bottom: 20px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-dim);
  margin-bottom: 32px;
}

.breadcrumb a:hover {
  color: var(--color-gold);
}

.breadcrumb .sep {
  color: var(--color-dark-border);
}

/* --- Layout Containers --- */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 clamp(24px, 4vw, 60px);
}

.container-narrow {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding: 0 clamp(24px, 4vw, 60px);
}

.section {
  padding: var(--section-pad) 0;
  position: relative;
}

.section-dark {
  background: var(--color-dark);
}

.section-elevated {
  background: var(--color-dark-surface);
}

/* --- Asymmetric Grid Layouts --- */
.grid-asymm {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: center;
}

.grid-asymm.reverse {
  direction: rtl;
}

.grid-asymm.reverse > * {
  direction: ltr;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

/* --- Glass Cards --- */
.glass-card {
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  backdrop-filter: blur(10px);
  padding: clamp(32px, 4vw, 48px);
  transition: all 0.5s var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold-muted), transparent);
  opacity: 0;
  transition: opacity 0.5s;
}

.glass-card:hover {
  background: var(--color-glass-hover);
  border-color: rgba(201, 168, 76, 0.15);
  transform: translateY(-4px);
}

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

/* --- Floating Panels --- */
.floating-panel {
  background: var(--color-dark-elevated);
  border: 1px solid var(--color-dark-border);
  padding: clamp(40px, 5vw, 64px);
  position: relative;
}

.floating-panel-accent {
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 60px;
  background: var(--color-gold);
}

/* --- Image Presentation --- */
.img-frame {
  position: relative;
  overflow: hidden;
  background: var(--color-dark-surface);
}

.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.8s var(--ease-out-expo);
}

.img-frame:hover img {
  transform: scale(1.03);
}

.img-frame-border {
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(201, 168, 76, 0.2);
  pointer-events: none;
  transition: inset 0.5s var(--ease-smooth);
}

.img-frame:hover .img-frame-border {
  inset: 8px;
}

.img-cinematic {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
}

.img-cinematic img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--color-dark);
}

.img-portrait {
  aspect-ratio: 3/4;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  padding: 16px 36px;
  border: 1px solid var(--color-dark-border);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.4s var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-gold);
  transition: left 0.5s var(--ease-out-expo);
  z-index: -1;
}

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

.btn:hover::before {
  left: 0;
}

.btn-gold {
  border-color: var(--color-gold-dark);
  color: var(--color-gold);
}

.btn-arrow::after {
  content: '\2192';
  transition: transform 0.3s;
}

.btn-arrow:hover::after {
  transform: translateX(4px);
}

/* --- Stats / Counters --- */
.stats-row {
  display: flex;
  gap: clamp(32px, 5vw, 80px);
  padding: 40px 0;
  border-top: 1px solid var(--color-dark-border);
  border-bottom: 1px solid var(--color-dark-border);
}

.stat-item {
  text-align: left;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  color: var(--color-gold);
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-dim);
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 60px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-dark-border);
}

.timeline-item {
  position: relative;
  padding-bottom: 48px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -46px;
  top: 6px;
  width: 10px;
  height: 10px;
  border: 1px solid var(--color-gold);
  background: var(--color-black);
  transform: rotate(45deg);
}

.timeline-year {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-gold);
  margin-bottom: 12px;
}

.timeline-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-ivory);
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Dividers --- */
.divider {
  width: 60px;
  height: 1px;
  background: var(--color-gold);
  margin: 32px 0;
}

.divider-long {
  width: 100%;
  height: 1px;
  background: var(--color-dark-border);
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.2s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.3s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.4s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.5s; }

.stagger-children.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* --- Parallax containers --- */
.parallax-wrap {
  overflow: hidden;
  position: relative;
}

.parallax-img {
  transform: translateY(-10%);
  transition: transform 0.1s linear;
  height: 120%;
  width: 100%;
  object-fit: cover;
}

/* --- Quote Block --- */
.quote-block {
  position: relative;
  padding: 40px 0 40px 40px;
  border-left: 2px solid var(--color-gold);
}

.quote-block p {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2vw, 1.8rem);
  color: var(--color-ivory);
  font-style: italic;
  line-height: 1.6;
  max-width: 100%;
}

.quote-block cite {
  display: block;
  margin-top: 20px;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-dim);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-dark);
  border-top: 1px solid var(--color-dark-border);
  padding: 80px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  margin-top: 16px;
  max-width: 320px;
  line-height: 1.7;
}

.footer-col h6 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-dim);
  padding: 6px 0;
  transition: color 0.3s;
}

.footer-col a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--color-dark-border);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

.footer-bottom a {
  color: var(--color-gold-dark);
}

.footer-bottom a:hover {
  color: var(--color-gold);
}

.footer-contact-info {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  line-height: 1.8;
}

.footer-contact-info a {
  color: var(--color-text-muted);
  display: inline;
}

/* --- Cursor Effect --- */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(201, 168, 76, 0.04) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s;
  opacity: 0;
}

body:hover .cursor-glow {
  opacity: 1;
}

/* --- Page Transition Overlay --- */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: var(--color-black);
  transform: scaleY(0);
  transform-origin: bottom;
  pointer-events: none;
}

.page-transition.entering {
  animation: pageTransIn 0.5s var(--ease-in-out) forwards;
}

.page-transition.leaving {
  animation: pageTransOut 0.5s var(--ease-in-out) forwards;
}

@keyframes pageTransIn {
  0% { transform: scaleY(0); transform-origin: bottom; }
  100% { transform: scaleY(1); transform-origin: bottom; }
}

@keyframes pageTransOut {
  0% { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0); transform-origin: top; }
}

/* --- Specific Page Styles --- */

/* Home: Split hero */
.home-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
}

.home-hero-left {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: calc(var(--nav-height) + 60px) clamp(32px, 5vw, 80px) clamp(60px, 10vh, 120px);
  position: relative;
}

.home-hero-right {
  position: relative;
  overflow: hidden;
}

.home-hero-right img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: var(--color-dark);
}

.home-hero-right::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, var(--color-black) 0%, transparent 30%);
}

/* About: Offset card layout */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-portrait {
  position: sticky;
  top: calc(var(--nav-height) + 40px);
}

/* Business: Diagonal sections */
.biz-diagonal {
  position: relative;
  overflow: hidden;
}

.biz-diagonal::before {
  content: '';
  position: absolute;
  top: -5%;
  left: -5%;
  right: -5%;
  bottom: -5%;
  background: var(--color-dark-surface);
  transform: skewY(-3deg);
  z-index: 0;
}

.biz-diagonal > * {
  position: relative;
  z-index: 1;
}

/* Real Estate: Layered panels */
.re-panel-stack {
  position: relative;
  min-height: 500px;
}

.re-panel {
  background: var(--color-dark-elevated);
  border: 1px solid var(--color-dark-border);
  padding: 48px;
  margin-bottom: 24px;
  position: relative;
}

.re-panel-tag {
  position: absolute;
  top: 0;
  right: 48px;
  background: var(--color-gold);
  color: var(--color-black);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 6px 16px;
  font-weight: 600;
}

/* OBON: Futuristic grid */
.obon-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.obon-card {
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  padding: 40px;
  position: relative;
}

.obon-card-lg {
  grid-column: span 8;
}

.obon-card-sm {
  grid-column: span 4;
}

.obon-card-half {
  grid-column: span 6;
}

/* Art: Masonry-like */
.art-mosaic {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 200px;
  gap: 16px;
}

.art-mosaic-item:nth-child(1) {
  grid-row: span 2;
  grid-column: span 2;
}

.art-mosaic-item:nth-child(4) {
  grid-column: span 2;
}

/* Philanthropy: Offset blocks */
.phil-block {
  display: flex;
  gap: 60px;
  margin-bottom: 80px;
}

.phil-block:nth-child(even) {
  flex-direction: row-reverse;
}

.phil-block-number {
  font-family: var(--font-serif);
  font-size: 4rem;
  color: rgba(201, 168, 76, 0.1);
  line-height: 1;
  flex-shrink: 0;
  width: 100px;
}

/* Media: Editorial cards */
.media-card {
  background: var(--color-dark-surface);
  border: 1px solid var(--color-dark-border);
  overflow: hidden;
  transition: all 0.5s var(--ease-smooth);
}

.media-card:hover {
  border-color: var(--color-gold-muted);
  transform: translateY(-6px);
}

.media-card-body {
  padding: 32px;
}

.media-card-date {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-gold);
  margin-bottom: 12px;
}

.media-card-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-ivory);
  margin-bottom: 12px;
  line-height: 1.4;
}

/* Contact: Split layout */
.contact-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - var(--nav-height));
}

.contact-info-side {
  background: var(--color-dark);
  padding: clamp(60px, 8vw, 120px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-form-side {
  background: var(--color-dark-surface);
  padding: clamp(60px, 8vw, 120px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Form styles */
.form-group {
  margin-bottom: 28px;
}

.form-group label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-dim);
  margin-bottom: 10px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-dark-border);
  color: var(--color-ivory);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-gold);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .grid-asymm {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .grid-asymm.reverse {
    direction: ltr;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .home-hero {
    grid-template-columns: 1fr;
  }

  .home-hero-right {
    min-height: 50vh;
  }

  .home-hero-right::after {
    background: linear-gradient(to top, var(--color-black) 0%, transparent 30%);
  }

  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-portrait {
    position: relative;
    top: auto;
  }

  .obon-card-lg,
  .obon-card-sm,
  .obon-card-half {
    grid-column: span 12;
  }

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

  .art-mosaic-item:nth-child(1) {
    grid-column: span 2;
  }

  .phil-block,
  .phil-block:nth-child(even) {
    flex-direction: column;
  }

  .contact-split {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .stats-row {
    flex-wrap: wrap;
    gap: 32px;
  }

  .stat-item {
    min-width: 140px;
  }

  .art-mosaic {
    grid-template-columns: 1fr;
    grid-auto-rows: 250px;
  }

  .art-mosaic-item:nth-child(1) {
    grid-column: span 1;
    grid-row: span 1;
  }

  .art-mosaic-item:nth-child(4) {
    grid-column: span 1;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .obon-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .gate-input-wrap {
    width: 280px;
  }

  .hero-scroll-hint {
    display: none;
  }
}

/* --- Utility --- */
.text-gold { color: var(--color-gold); }
.text-ivory { color: var(--color-ivory); }
.text-muted { color: var(--color-text-muted); }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 16px; }
.mt-2 { margin-top: 32px; }
.mt-3 { margin-top: 48px; }
.mt-4 { margin-top: 64px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 16px; }
.mb-2 { margin-bottom: 32px; }
.mb-3 { margin-bottom: 48px; }
.mb-4 { margin-bottom: 64px; }
.gap-sm { gap: 16px; }
.gap-md { gap: 32px; }
.gap-lg { gap: 64px; }