/* Design System Tokens */
:root {
  --primary-color: #111111;
  --secondary-color: #444444;
  --accent-color: #0056b3; /* Subtle blue */
  --bg-color: #ffffff;
  --bg-dark: #f8f9fa;
  --bg-darker: #333333;
  --text-color: #333333;
  --text-light: #777777;
  --text-inverse: #ffffff;
  --font-main: 'Inter', sans-serif;
  --font-serif: 'Playfair Display', serif;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  --transition-fast: 0.2s ease-in-out;
  --transition-smooth: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Reset & Basics */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 300;
  letter-spacing: -0.02em;
}

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

/* Typography Utilities */
.text-center { text-align: center; }
.text-light { color: var(--text-light); }
.text-small { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; }
.section-title { font-size: 2.5rem; margin-bottom: var(--spacing-sm); font-weight: 300;}
.section-subtitle { font-size: 1rem; color: var(--text-light); margin-bottom: var(--spacing-lg); max-width: 600px; margin-inline: auto;}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  transition: all var(--transition-fast);
}

.navbar .logo {
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.navbar .logo img {
  height: 150px;
  margin: -35px 0;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  position: relative;
}

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

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

/* Hero Section */
.hero {
  height: 100vh;
  width: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
  transform: scale(1.05);
  will-change: transform;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.2), rgba(0,0,0,0.6));
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--text-inverse);
}

.hero-content h1 {
  font-size: 4.5rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  
  /* Metallic Chrome Gradient */
  background: linear-gradient(
    to right,
    #999 0%,
    #fff 10%,
    #888 30%,
    #f2f2f2 45%,
    #888 60%,
    #fff 80%,
    #999 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  animation: chromeShine 8s linear infinite;
  
  /* Drop shadow to separate from background */
  filter: drop-shadow(0px 8px 16px rgba(0,0,0,0.6));
}

@keyframes chromeShine {
  to {
    background-position: 200% center;
  }
}

.hero-content p {
  font-size: 1.2rem;
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.8;
}

/* Sections */
.section {
  padding: var(--spacing-lg);
}

.section-dark {
  background-color: var(--bg-darker);
  color: var(--text-inverse);
}

.section-dark .text-light {
  color: #aaaaaa;
}

/* About Section */
.about {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.section-indicator {
  font-style: italic;
  font-family: var(--font-serif);
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  position: relative;
  display: inline-block;
}

.section-indicator::before {
  content: '';
  position: absolute;
  top: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 30px;
  background-color: #ddd;
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
  aspect-ratio: 4 / 3;
}

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

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

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay h3 {
  color: white;
  font-size: 1.5rem;
  transform: translateY(20px);
  transition: transform var(--transition-smooth);
}

.portfolio-item:hover .portfolio-overlay h3 {
  transform: translateY(0);
}

/* Split Layout (Project Page) */
.split-layout {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.split-layout > * {
  flex: 1;
}

.split-text {
  padding: var(--spacing-lg);
}

.split-img img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.split-layout.reverse {
  flex-direction: row-reverse;
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* Footer */
.footer {
  text-align: center;
  padding: var(--spacing-md);
  background-color: var(--bg-dark);
  color: var(--text-light);
  font-size: 0.9rem;
}

/* Hamburger Menu (hidden on desktop) */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
  padding: 10px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--primary-color);
  transition: all 0.3s ease;
  transform-origin: center;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Responsive */
@media (max-width: 768px) {
  /* Navigation */
  .hamburger {
    display: flex;
  }

  .navbar {
    padding: 0 var(--spacing-sm);
  }

  .navbar .logo img {
    height: 80px;
    margin: -15px 0;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(15px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    z-index: 1000;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    font-size: 1.2rem;
  }

  /* Hero */
  .hero-content h1 { font-size: 2.2rem; letter-spacing: 0.1em; }
  .hero-content p { font-size: 0.85rem; letter-spacing: 0.15em; }

  /* Sections */
  .section { padding: var(--spacing-md) var(--spacing-sm); }

  /* About */
  .about { padding: var(--spacing-md) var(--spacing-sm); }
  .about p { font-size: 0.95rem; }

  /* Portfolio */
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }

  /* Split Layout */
  .split-layout { flex-direction: column; }
  .split-layout.reverse { flex-direction: column; }

  /* Watermarks */
  .watermark { font-size: 4rem; top: -10px; right: -5px; }
  .watermark-center { font-size: 5rem; }

  /* Project Hero (lotus page) */
  .project-hero {
    height: 60vh;
    padding: var(--spacing-lg) var(--spacing-sm);
  }
  .project-hero-content h1 { font-size: 2rem; }
  .project-hero-content p { font-size: 1rem; }

  /* Overlapping Grid */
  .overlap-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .overlap-text,
  .overlap-section.reverse .overlap-text {
    grid-column: 1 / 2;
    grid-row: 2;
    margin: -30px var(--spacing-sm) 0 var(--spacing-sm);
  }
  .overlap-image,
  .overlap-section.reverse .overlap-image {
    grid-column: 1 / 2;
    grid-row: 1;
  }

  .glass-card {
    padding: var(--spacing-md);
  }

  /* Model Showcase */
  .model-showcase {
    flex-direction: column;
    padding: var(--spacing-sm) 0;
  }
  .model-container {
    width: 100%;
    height: 350px;
    border-radius: 8px;
  }
  .cad-overlay {
    width: 90%;
    transform: none;
  }

  /* Production Header */
  .production-header {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  .production-header h2 { font-size: 2rem; }

  /* Bento Gallery */
  .bento-gallery {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .bento-item { height: 250px; }
  .bento-item:nth-child(1) { grid-column: 1 / -1; }
  .bento-overlay { opacity: 1; }

  /* Footer */
  .footer { font-size: 0.8rem; }
}

/* Page Transitions */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-color);
  z-index: 100000;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.page-transition.active {
  opacity: 1;
  pointer-events: all;
}

/* Collage Grid */
.collage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}
.collage-grid img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  transition: transform var(--transition-smooth);
}
.collage-grid img:hover {
  transform: translateY(-5px);
  z-index: 10;
}
.collage-wide {
  grid-column: span 2;
}
@media (max-width: 768px) {
  .collage-wide {
    grid-column: span 1;
  }
}

/* Project Hero */
.project-hero {
  height: 80vh;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-xl) var(--spacing-lg);
  overflow: hidden;
}

.hero-parallax {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120%;
  object-fit: cover;
  z-index: -1;
  transform: translateY(0);
  will-change: transform;
}

.project-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 60%, rgba(0,0,0,0) 100%);
  z-index: 0;
}

.project-hero-content {
  position: relative;
  z-index: 1;
  color: white;
  max-width: 800px;
}

.project-meta {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.1rem;
  color: #ddd;
  margin-bottom: var(--spacing-sm);
  display: inline-block;
  border-bottom: 1px solid rgba(255,255,255,0.3);
  padding-bottom: 5px;
}

.project-hero-content h1 {
  font-size: 3.5rem;
  font-weight: 300;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.project-hero-content p {
  font-size: 1.2rem;
  color: #ccc;
  max-width: 600px;
}

/* Overlapping Grid Layout */
.overlap-section {
  padding: var(--spacing-md) var(--spacing-lg);
  position: relative;
}

.overlap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.overlap-image {
  grid-column: 1 / 2;
  grid-row: 1;
  position: relative;
  z-index: 1;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.overlap-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-smooth);
}

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

.overlap-text {
  grid-column: 2 / 3;
  grid-row: 1;
  position: relative;
  z-index: 2;
  margin-left: -100px;
}

.overlap-section.reverse .overlap-image {
  grid-column: 2 / 3;
}

.overlap-section.reverse .overlap-text {
  grid-column: 1 / 2;
  margin-left: 0;
  margin-right: -100px;
}

.glass-card {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--spacing-lg);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  border: 1px solid rgba(255,255,255,0.4);
  position: relative;
  overflow: hidden;
}

.section-dark .glass-card {
  background: rgba(30, 30, 30, 0.85);
  color: white;
  border-color: rgba(255,255,255,0.1);
}

.watermark {
  position: absolute;
  top: -20px;
  right: -10px;
  font-size: 8rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 200;
  color: rgba(0,0,0,0.03);
  z-index: -1;
  pointer-events: none;
  line-height: 1;
}

.section-dark .watermark,
.watermark-center {
  color: rgba(255,255,255,0.03);
}

.watermark-center {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 12rem;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 200;
  z-index: 0;
  pointer-events: none;
  line-height: 1;
}

.overlap-text h2 {
  font-size: 2.2rem;
  margin-bottom: var(--spacing-sm);
}

.overlap-text p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-light);
}

/* Elevated 3D Showcase */
.model-showcase {
  position: relative;
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg) 0;
  z-index: 1;
}

.cad-overlay {
  width: 650px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.3);
}

.model-container {
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle at center, #333 0%, #111 100%);
  box-shadow: 0 0 50px rgba(0,0,0,0.5), inset 0 0 20px rgba(255,255,255,0.05);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.05);
}

.model-hint {
  position: absolute;
  bottom: 30px;
  width: 100%;
  text-align: center;
  color: rgba(255,255,255,0.3);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  pointer-events: none;
}

@media (max-width: 900px) {
  .overlap-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  .overlap-text, .overlap-section.reverse .overlap-text {
    grid-column: 1 / 2;
    grid-row: 2;
    margin: -50px var(--spacing-sm) 0 var(--spacing-sm);
  }
  .overlap-image, .overlap-section.reverse .overlap-image {
    grid-column: 1 / 2;
    grid-row: 1;
  }
  .project-hero-content h1 {
    font-size: 2.5rem;
  }
  .model-showcase {
    flex-direction: column;
  }
  .model-container {
    width: 100%;
    height: 400px;
    border-radius: 8px;
  }
  .cad-overlay {
    width: 80%;
    transform: none;
  }
}

/* Production Header Split */
.production-header {
  max-width: 1200px;
  margin: 0 auto var(--spacing-lg) auto;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.production-header h2 {
  margin: 0;
  font-size: 3rem;
  line-height: 1.1;
}

.production-header p {
  color: var(--text-light);
  font-size: 1.1rem;
}

/* Bento Box Gallery */
.bento-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: 350px 350px;
  gap: var(--spacing-sm);
  max-width: 1200px;
  margin: 0 auto;
}

.bento-item {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  background: #000;
}

.bento-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 1, 0.3, 1), opacity 0.3s ease;
}

.bento-item:hover img {
  transform: scale(1.08);
  opacity: 0.8;
}

.bento-item:nth-child(1) { 
  grid-column: 1 / 3; 
}

.bento-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 30px;
  color: white;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.bento-item:hover .bento-overlay {
  opacity: 1;
}

.bento-overlay h3 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 500;
  transform: translateY(20px);
  transition: transform 0.4s cubic-bezier(0.2, 1, 0.3, 1);
}

.bento-item:hover .bento-overlay h3 {
  transform: translateY(0);
}

.bento-overlay p {
  margin: 5px 0 0;
  font-size: 1rem;
  color: #ddd;
  transform: translateY(20px);
  transition: transform 0.4s cubic-bezier(0.2, 1, 0.3, 1) 0.05s;
}

.bento-item:hover .bento-overlay p {
  transform: translateY(0);
}

@media (max-width: 900px) {
  .production-header {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  .bento-gallery {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .bento-item {
    height: 300px;
  }
  .bento-item:nth-child(1) {
    grid-column: 1 / -1;
  }
}

/* Lightbox Modal */
.lightbox {
  display: none;
  position: fixed;
  z-index: 1000000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.9);
  backdrop-filter: blur(5px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 1;
}

.lightbox-content {
  max-width: 90%;
  max-height: 80vh;
  border-radius: 4px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  transform: scale(0.95);
  transition: transform 0.3s cubic-bezier(0.2, 1, 0.3, 1);
}

.lightbox.active .lightbox-content {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 30px;
  right: 40px;
  color: white;
  font-size: 40px;
  font-weight: 200;
  cursor: pointer;
  transition: color 0.2s;
  z-index: 1000001;
}

.lightbox-close:hover {
  color: #ccc;
}

#lightbox-caption {
  margin-top: 20px;
  color: white;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  text-align: center;
}

.bento-item {
  cursor: pointer;
}