:root {
  /* Colors */
  --color-bg: #f8f6f0;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #555555;
  --color-accent: #c44536; /* Premium terracotta/red accent */
  --color-border: #e2dfd5;
  
  --color-bg-dark: #1a1a1a;
  --color-text-dark: #f8f6f0;
  
  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Playfair Display", ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  
  /* Layout */
  --container-width: 1400px;
  --grid-gap: 2rem;
  
  /* Transitions */
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-in-out-circ: cubic-bezier(0.785, 0.135, 0.15, 0.86);
  --transition-fast: 0.3s var(--ease-out-expo);
  --transition-slow: 0.8s var(--ease-out-expo);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Page Transition */
body.is-transitioning {
  opacity: 0;
  pointer-events: none;
}
body {
  opacity: 1;
  transition: opacity 0.6s var(--ease-in-out-circ);
}

a {
  color: inherit;
  text-decoration: none;
}
img, svg {
  display: block;
  max-width: 100%;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.text-display { font-size: clamp(3rem, 8vw, 6rem); }
.text-h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
.text-h2 { font-size: clamp(2rem, 4vw, 3rem); }
.text-h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
.text-body-large { font-size: clamp(1.125rem, 2vw, 1.5rem); line-height: 1.5; }
.text-caption { font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }

/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

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

/* Grids - 3 distinct strategies requested */
/* 1. Standard 12-column Grid */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--grid-gap);
}
/* 2. Asymmetric Bento Grid */
.grid-bento {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  grid-auto-rows: 400px;
  gap: var(--grid-gap);
}
.grid-bento > *:nth-child(4n+1) { grid-column: span 2; grid-row: span 2; }
/* 3. Masonry/Offset Grid (simulated with flex/margins) */
.grid-offset {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
}
.grid-offset > * { flex: 1 1 calc(50% - var(--space-lg)); }
.grid-offset > *:nth-child(even) { margin-top: var(--space-lg); }

/* Components */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  padding: var(--space-md) 0;
  z-index: 100;
  mix-blend-mode: difference;
  color: #fff;
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.nav-links { display: flex; gap: var(--space-md); }
.nav-links a { position: relative; overflow: hidden; display: inline-block; }
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: right;
  transition: transform var(--transition-fast);
}
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }

/* Buttons & CTA - Magnetic Interaction Setup */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 1rem 2rem; border-radius: 999px;
  background: var(--color-text); color: var(--color-bg);
  font-family: var(--font-sans); font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em;
  border: 1px solid var(--color-text);
  cursor: pointer; overflow: hidden; position: relative;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.btn-outline { background: transparent; color: var(--color-text); }
.btn:hover { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }
.magnetic-wrap { display: inline-block; padding: 10px; } /* Buffer for magnetic pull */

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
}
.hero-content { position: relative; z-index: 2; mix-blend-mode: difference; color: #fff;}
.hero-bg {
  position: absolute; top: -10%; left: -10%; width: 120%; height: 120%;
  object-fit: cover; z-index: 1;
  /* Will be manipulated via JS for Layered parallax depth */
}

/* Service / Case Study Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-lg);
  display: flex; flex-direction: column; gap: var(--space-sm);
  transition: border-color var(--transition-fast);
}

/* SVG Path Morph */
.icon-morph svg path { transition: d 0.4s var(--ease-out-expo); }
.icon-morph:hover svg path { /* Custom path states defined in JS or inline CSS */ }

/* Direction-aware hover field */
.hover-field {
  position: relative; overflow: hidden; border-radius: 8px;
}
.hover-overlay {
  position: absolute; width: 200%; height: 200%;
  background: radial-gradient(circle at center, rgba(255,255,255,0.2) 0%, transparent 50%);
  pointer-events: none; opacity: 0; transition: opacity var(--transition-fast);
}
.hover-field:hover .hover-overlay { opacity: 1; }

/* Section focus transition */
.focus-group:hover .focus-item:not(:hover) {
  opacity: 0.4; filter: grayscale(100%);
}
.focus-item { transition: opacity 0.4s ease, filter 0.4s ease; }

/* Scroll Reveal */
.reveal { opacity: 0; transform: translateY(40px); transition: all var(--transition-slow); }
.reveal.reveal-active { opacity: 1; transform: translateY(0); }
.reveal-stagger > * { opacity: 0; transform: translateY(20px); transition: all 0.6s var(--ease-out-expo); }
.reveal-stagger.reveal-active > * { opacity: 1; transform: translateY(0); }
.reveal-stagger.reveal-active > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-stagger.reveal-active > *:nth-child(2) { transition-delay: 0.2s; }
.reveal-stagger.reveal-active > *:nth-child(3) { transition-delay: 0.3s; }

/* Kinetic Typography */
.kinetic-text span { display: inline-block; transition: transform var(--transition-slow); transform: translateY(100%); opacity: 0; }
.reveal-active .kinetic-text span { transform: translateY(0); opacity: 1; }

/* Footer */
.footer {
  background: var(--color-bg-dark); color: var(--color-text-dark);
  padding: var(--space-xl) 0 var(--space-md);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-md);
  padding-bottom: var(--space-lg); border-bottom: 1px solid #333;
}

/* Utilities */
.img-fluid { width: 100%; height: auto; display: block; object-fit: cover; }
.aspect-video { aspect-ratio: 16/9; }
.aspect-square { aspect-ratio: 1/1; }
.aspect-portrait { aspect-ratio: 4/5; }

/* Responsive */
@media (max-width: 1024px) {
  .grid-12 { grid-template-columns: repeat(8, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .grid-12 { grid-template-columns: 1fr; }
  .grid-offset > * { flex: 1 1 100%; margin-top: 0 !important; }
  .footer-grid { grid-template-columns: 1fr; }
  .text-display { font-size: 3rem; }
}
@media (max-width: 480px) {
  .section { padding: var(--space-lg) 0; }
}

/* Accessibility / 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-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  .kinetic-text span { transform: none; opacity: 1; }
  body { transition: none; }
}