:root {
  --color-bg: #0a0a0a;
  --color-text: #f4f4f0;
  --color-accent: #c9a77e;
  --color-muted: #888888;
  --color-surface: #141414;
  --color-border: rgba(255, 255, 255, 0.1);
  
  --font-serif: "Playfair Display", "Times New Roman", serif;
  --font-sans: "Inter", "Helvetica Neue", Arial, sans-serif;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  --spacing-xxl: 12rem;
  
  --transition-smooth: 0.8s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-fast: 0.3s ease;
  
  --header-height: 80px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent);
}

/* Typography Utilities */
.text-serif { font-family: var(--font-serif); }
.text-sans { font-family: var(--font-sans); }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-muted); }
.text-center { text-align: center; }

.display-1 {
  font-size: clamp(3rem, 8vw, 8rem);
  letter-spacing: -0.02em;
}

.display-2 {
  font-size: clamp(2.5rem, 5vw, 5rem);
}

.heading-1 { font-size: 3rem; }
.heading-2 { font-size: 2.25rem; }
.heading-3 { font-size: 1.5rem; }

.body-large { font-size: 1.25rem; font-weight: 300; }
.body-small { font-size: 0.875rem; color: var(--color-muted); letter-spacing: 0.05em; text-transform: uppercase; }

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.section-lg {
  padding: var(--spacing-xxl) 0;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-md);
  z-index: 100;
  background: transparent;
  transition: background var(--transition-fast), padding var(--transition-fast);
}

.header.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width var(--transition-fast);
}

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

/* Refined Headline Letter-Spacing Animation */
.anim-letters {
  display: inline-block;
  overflow: hidden;
}

.anim-letters span {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%) scale(1.1);
  transition: opacity 1s cubic-bezier(0.25, 1, 0.5, 1), transform 1s cubic-bezier(0.25, 1, 0.5, 1);
}

.anim-letters.is-visible span {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-text);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--transition-fast);
  z-index: -1;
}

.btn:hover {
  color: var(--color-bg);
  border-color: var(--color-text);
}

.btn:hover::before {
  transform: scaleY(1);
  transform-origin: top;
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  background-color: var(--color-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-muted);
}

/* Layered Cinematic Hero Depth */
.hero {
  height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%; /* For parallax */
  object-fit: cover;
  z-index: -2;
  will-change: transform;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(10,10,10,0.3) 0%, rgba(10,10,10,0.8) 100%);
  z-index: -1;
}

.hero-content {
  z-index: 1;
  max-width: 800px;
  padding: var(--spacing-md);
}

/* Section-to-section Image-sequence Transition */
.seq-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.seq-image-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.seq-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 1.2s ease, transform 1.2s ease;
}

.seq-image.is-active {
  opacity: 0.4;
  transform: scale(1);
}

/* Hover Split-Screen Reveal */
.split-reveal-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-sm);
}

@media (min-width: 768px) {
  .split-reveal-container {
    grid-template-columns: 1fr 1fr;
    height: 70vh;
  }
}

.split-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.split-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.split-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 10, 0.6);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-md);
  transition: background var(--transition-smooth);
}

.split-item:hover .split-img {
  transform: scale(1.05);
}

.split-item:hover .split-overlay {
  background: rgba(10, 10, 10, 0.2);
}

.split-content {
  text-align: center;
  transform: translateY(20px);
  opacity: 0.8;
  transition: all var(--transition-smooth);
}

.split-item:hover .split-content {
  transform: translateY(0);
  opacity: 1;
}

/* Form Styles */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-control {
  width: 100%;
  padding: 1rem;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-bottom-color: var(--color-accent);
}

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

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: transform var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-5px);
}

.card-img-wrap {
  width: 100%;
  padding-top: 60%;
  position: relative;
  overflow: hidden;
}

.card-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.card:hover .card-img {
  transform: scale(1.05);
}

.card-content {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

/* Utilities */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s ease, transform 1s ease;
}

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

/* Responsive */
@media (max-width: 768px) {
  .nav {
    display: none; /* Add a hamburger menu later if needed, keeping simple for now or showing a simpler nav */
  }
  .header {
    justify-content: center;
  }
  /* For simple demo, keep nav visible but wrap */
  .nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--color-surface);
    padding: var(--spacing-sm);
    justify-content: space-around;
    border-top: 1px solid var(--color-border);
    z-index: 100;
  }
}