:root {
  --color-bg: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-text: #0D0D0D;
  --color-text-muted: #666666;
  --color-border: #E5E5E5;
  --color-accent: #1A1A1A;
  
  --font-display: "Times New Roman", Times, Baskerville, Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2.5rem;
  --space-lg: 5rem;
  --space-xl: 10rem;
  
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  
  --container-width: 1400px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0A0A0A;
    --color-surface: #141414;
    --color-text: #F5F5F5;
    --color-text-muted: #A3A3A3;
    --color-border: #262626;
    --color-accent: #FFFFFF;
  }
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  /* Smooth page transition effect (Effect 8) */
  opacity: 0;
  transition: opacity 0.8s var(--ease-in-out);
}

body.loaded {
  opacity: 1;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.1;
  color: var(--color-text);
}

h1 { font-size: clamp(3.5rem, 8vw, 7rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2.5rem, 5vw, 4.5rem); letter-spacing: -0.01em; margin-bottom: var(--space-sm); }
h3 { font-size: clamp(1.5rem, 2vw, 2rem); margin-bottom: var(--space-xs); }

p {
  color: var(--color-text-muted);
  max-width: 70ch;
  margin-bottom: var(--space-sm);
  font-size: 1.125rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 5%;
}

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

.section-divider {
  width: 100%;
  height: 1px;
  background-color: var(--color-border);
  margin: var(--space-lg) 0;
}

/* Grids */
.grid-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}
@media (min-width: 768px) { .grid-cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .grid-cards { grid-template-columns: repeat(4, 1fr); } }

.grid-2-asym {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  align-items: center;
}
@media (min-width: 1024px) {
  .grid-2-asym { grid-template-columns: 5fr 7fr; }
}

.grid-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}
@media (min-width: 1024px) {
  .grid-sidebar { grid-template-columns: 1fr 2.5fr; }
}

/* Header */
.header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  color: #FFF;
  mix-blend-mode: difference;
  transition: padding 0.4s var(--ease-out), background-color 0.4s var(--ease-out), mix-blend-mode 0.4s var(--ease-out);
}
.header.solid {
  mix-blend-mode: normal;
  background-color: var(--color-bg);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 5%;
}
.logo strong {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  gap: 2.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}
@media (max-width: 1024px) { .nav-links { display: none; } }

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: -1;
  background-color: #000;
}
.hero-bg img {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0.6; /* Ensure text legibility */
}
.hero-content {
  color: #FFF;
  max-width: 1000px;
  margin-top: 10vh;
}
.hero-content p {
  color: #E0E0E0;
  font-size: 1.5rem;
  max-width: 800px;
}

/* Cards (Effect 2: 3D Hover Field) */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  height: 100%;
  display: flex;
  flex-direction: column;
  position: relative;
}
.card-img-wrap {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  margin-bottom: var(--space-sm);
  background-color: var(--color-border);
}
.card-img-wrap img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 1s var(--ease-out);
}
.card:hover .card-img-wrap img {
  transform: scale(1.05);
}
.card-tag {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  display: block;
}
.card-timeline {
  margin-top: auto;
  padding-top: 1.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  border-top: 1px solid var(--color-border);
}

/* Buttons (Effect 5: Magnetic CTA & Effect 4: SVG Morph) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem 3rem;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background-color: var(--color-text);
  color: var(--color-bg);
  border: 1px solid var(--color-text);
  cursor: pointer;
  transition: background-color 0.4s var(--ease-out), color 0.4s var(--ease-out);
  text-align: center;
}
.btn:hover {
  background-color: transparent;
  color: var(--color-text);
}
.btn-light {
  background-color: #FFF;
  color: #000;
  border-color: #FFF;
}
.btn-light:hover {
  background-color: transparent;
  color: #FFF;
}
.btn-outline {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn-outline:hover {
  border-color: var(--color-text);
}

/* Effect 4: SVG Path Morph / Micro-interaction */
.icon-arrow {
  width: 20px;
  height: 20px;
  margin-left: 1rem;
  transition: transform 0.4s var(--ease-out);
}
.btn:hover .icon-arrow {
  transform: translateX(8px);
}

/* Footer */
.footer {
  padding: var(--space-md) 5%;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}
.footer-links {
  display: flex;
  gap: 2rem;
}

/* =========================================
   VISUAL EFFECTS CORE CLASSES
   ========================================= */

/* Effect 1: Scroll-linked narrative reveal */
.reveal-up {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 1.2s var(--ease-out), transform 1.2s var(--ease-out);
  will-change: opacity, transform;
}
.reveal-up.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Effect 2: Direction-aware hover field */
.hover-3d {
  perspective: 1200px;
  transform-style: preserve-3d;
}
.hover-3d-inner {
  transition: transform 0.1s linear, box-shadow 0.4s ease;
  transform-style: preserve-3d;
  will-change: transform;
}
.hover-3d:hover .hover-3d-inner {
  box-shadow: 0 30px 60px rgba(0,0,0,0.08);
}
@media (prefers-color-scheme: dark) {
  .hover-3d:hover .hover-3d-inner { box-shadow: 0 30px 60px rgba(0,0,0,0.4); }
}

/* Effect 3: Layered parallax depth */
.parallax-container {
  overflow: hidden;
  position: relative;
}
.parallax-img {
  will-change: transform;
}

/* Effect 6: Kinetic typography transition */
.kinetic-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  will-change: opacity, transform;
}
.kinetic-text {
  overflow: hidden; /* masks the translating words */
  display: inline-block;
  vertical-align: top;
}
.kinetic-text-wrapper.is-revealed .kinetic-word {
  opacity: 1;
  transform: translateY(0);
}

/* Effect 7: Section focus transition */
.focus-group:hover .focus-item:not(:hover) {
  opacity: 0.4;
  filter: grayscale(100%);
}
.focus-item {
  transition: opacity 0.6s var(--ease-out), filter 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

/* Fallback for 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-up { opacity: 1 !important; transform: none !important; }
  .kinetic-word { opacity: 1 !important; transform: none !important; }
  .hover-3d-inner { transform: none !important; box-shadow: none !important; }
  .parallax-img { transform: none !important; }
  body { opacity: 1 !important; }
}