@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@300;400;500;600;700;800&display=swap");

:root {
  --color-primary: #0a0a0a;
  --color-secondary: #141414;
  --color-accent: #6366f1;
  --color-background: #080808;
  --color-text: #f5f5f5;
  --color-text-muted: color-mix(in srgb, #f5f5f5 75%, transparent);
  --color-surface: color-mix(in srgb, #f5f5f5 5%, #080808);
  --color-border: color-mix(in srgb, #f5f5f5 10%, transparent);
  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --border-radius: 0.75rem;
  --border-radius-lg: calc(0.75rem * 2);
  --border-radius-xl: calc(0.75rem * 3);
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 20px color-mix(in srgb, #6366f1 30%, transparent);
}

/* Auto dark mode adaptation — swap bg↔text for guaranteed contrast */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #080808;
    --color-background: color-mix(in srgb, #0a0a0a 85%, black);
    --color-text: #080808;
    --color-text-muted: color-mix(in srgb, #080808 70%, transparent);
    --color-surface: color-mix(in srgb, #080808 6%, #0a0a0a);
    --color-border: color-mix(in srgb, #080808 10%, transparent);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4), 0 2px 4px -2px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4), 0 4px 6px -4px rgba(0,0,0,0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.4), 0 8px 10px -6px rgba(0,0,0,0.3);
  }
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-background);
  margin: 0;
  padding: 0;
  line-height: 1.75;
  font-size: 1rem;
  letter-spacing: -0.011em;
  overflow-x: hidden;
}

/* Premium typography scale — editorial (weight 450, tight leading) */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.05;
  margin-top: 0;
  letter-spacing: -0.045em;
  font-weight: 450;
}

h1 {
  font-size: clamp(3rem, 8vw + 1rem, 7.5rem);
  line-height: 0.95;
  font-weight: 450;
}
h2 { font-size: clamp(2.25rem, 5vw + 0.5rem, 4.5rem); line-height: 0.98; }
h3 { font-size: clamp(1.75rem, 3vw + 0.25rem, 2.75rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  color: var(--color-text-muted);
  max-width: 65ch;
}

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

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

a:hover {
  color: color-mix(in srgb, var(--color-accent) 80%, white);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2.25rem;
  background: var(--color-accent);
  color: #ffffff;
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  border-radius: 9999px;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.1) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: #ffffff;
}

.btn-primary:hover::after {
  transform: translateX(100%);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2.25rem;
  background: transparent;
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  border-radius: 9999px;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.section {
  padding: 7rem 1.5rem;
  position: relative;
}

@media (min-width: 768px) {
  .section {
    padding: 10rem 2rem;
  }
}

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

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

.section-accent h1,
.section-accent h2,
.section-accent h3,
.section-accent p,
.section-accent span {
  color: inherit;
}

.section-accent p {
  opacity: 0.85;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  border-color: color-mix(in srgb, var(--color-accent) 30%, transparent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

/* === Scroll-triggered entrance animations === */
[data-animate] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
[data-animate].visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1) rotateY(0deg);
}
[data-animate="fade-up"] { transform: translateY(60px); }
[data-animate="fade-left"] { transform: translateX(-60px); }
[data-animate="fade-right"] { transform: translateX(60px); }
[data-animate="scale-in"] { transform: scale(0.9); }
[data-animate="rotate-in"] { transform: perspective(1000px) rotateY(15deg); opacity: 0; }

/* Stagger children via CSS custom property */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: calc(var(--stagger-index, 0) * 0.1s);
}
[data-stagger] > *.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Enhanced micro-interactions === */

/* Button press effect */
.btn-primary:active { transform: scale(0.97); }

/* Card 3D hover */
.feature-card {
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.feature-card:hover {
  transform: translateY(-8px) rotateX(2deg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

/* Image reveal */
.image-reveal { overflow: hidden; }
.image-reveal img {
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.image-reveal:hover img { transform: scale(1.05); }

/* Text gradient shimmer on hover */
.shimmer-text {
  background-size: 100% auto;
}
.shimmer-text:hover {
  background-size: 200% auto;
  animation: shimmer-slide 2s linear infinite;
}
@keyframes shimmer-slide { to { background-position: 200% center; } }

/* === Parallax sections === */
.parallax-bg {
  position: relative;
  overflow: hidden;
}
.parallax-bg::before {
  content: '';
  position: absolute;
  inset: -20%;
  background: inherit;
  background-attachment: fixed;
  background-size: cover;
  z-index: -1;
}

/* Mobile hamburger menu */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 60;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: 0.3s;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-background);
    padding: 1rem 1.5rem;
    flex-direction: column;
    gap: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 50;
  }

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

/* === Micro-interactions === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 5px var(--color-accent); }
  50% { box-shadow: var(--shadow-glow); }
}

/* Entrance animations triggered by IntersectionObserver */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-on-scroll.delay-1 { transition-delay: 0.1s; }
.animate-on-scroll.delay-2 { transition-delay: 0.2s; }
.animate-on-scroll.delay-3 { transition-delay: 0.3s; }
.animate-on-scroll.delay-4 { transition-delay: 0.4s; }

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0.0s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.15s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.25s; opacity: 1; transform: translateY(0); }

/* Hover micro-interactions */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* === Scroll-driven animations === */

/* Scroll progress indicator */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-surface);
  z-index: 9999;
}

.scroll-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), color-mix(in srgb, var(--color-accent) 70%, white));
  width: 0%;
  transition: width 50ms linear;
}

/* Full-viewport scroll sections */
.scroll-section {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Sticky scroll container — tall enough for narrative acts */
.scroll-sticky-container {
  height: 450vh;
  position: relative;
}

.scroll-sticky-inner {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Canvas frame animation container */
.scroll-canvas-container {
  position: relative;
  width: 100%;
  height: 100vh;
}

.scroll-canvas-container canvas {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
}

/* Scroll-driven opacity/transform for 2-frame MVP */
.scroll-frame {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.1s linear, transform 0.1s linear;
}

.scroll-frame img {
  max-width: 100%;
  max-height: 100vh;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
}

.scroll-frame-start {
  opacity: 1;
  transform: scale(1);
}

.scroll-frame-end {
  opacity: 0;
  transform: scale(0.9) rotateY(10deg);
}

/* Scroll text overlay that fades in/out with scroll */
.scroll-text-overlay {
  position: absolute;
  z-index: 10;
  text-align: center;
  padding: 2rem;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.scroll-text-overlay h2 {
  font-size: clamp(2rem, 5vw, 4rem);
  margin-bottom: 1rem;
}

/* Snap scrolling for product sections */
.scroll-snap-container {
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
  height: 100vh;
}

.scroll-snap-section {
  scroll-snap-align: start;
  min-height: 100vh;
}

/* === Premium utilities === */

/* Gradient text */
.gradient-text {
  background: linear-gradient(135deg, var(--color-accent), color-mix(in srgb, var(--color-accent) 60%, white));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Gradient backgrounds */
.gradient-bg {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

.gradient-accent {
  background: linear-gradient(135deg, var(--color-accent), color-mix(in srgb, var(--color-accent) 60%, #6366f1));
}

/* Mesh gradient background */
.mesh-gradient {
  background:
    radial-gradient(at 40% 20%, color-mix(in srgb, var(--color-accent) 15%, transparent) 0px, transparent 50%),
    radial-gradient(at 80% 0%, color-mix(in srgb, var(--color-primary) 20%, transparent) 0px, transparent 50%),
    radial-gradient(at 0% 50%, color-mix(in srgb, var(--color-accent) 10%, transparent) 0px, transparent 50%),
    var(--color-background);
}

/* Noise texture overlay for depth */
.noise-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1;
}

/* Divider line */
.divider {
  width: 60px;
  height: 2px;
  background: var(--color-accent);
  margin: 1.5rem 0;
}

/* Badge / tag */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 9999px;
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
  color: var(--color-accent);
}

/* Eyebrow label — uppercase micro-text above headings */
.eyebrow,
.section-label {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
  display: block;
}

/* Full-bleed images — break out of container */
.full-bleed {
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  border-radius: 0;
}

.full-bleed img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 0;
}

/* Large number / stat display */
.stat-number {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
}

/* Premium dark theme — rich charcoal, not pure black */
.theme-dark {
  --color-background: #080808;
  --color-surface: #111111;
  --color-border: rgba(255,255,255,0.08);
  --color-text: #f5f5f5;
  --color-text-muted: rgba(245,245,245,0.7);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.5), 0 2px 4px -2px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5), 0 4px 6px -4px rgba(0,0,0,0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.5), 0 8px 10px -6px rgba(0,0,0,0.3);
}

/* Form input dark mode */
.theme-dark input,
.theme-dark textarea,
.theme-dark select {
  background-color: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

.theme-dark input::placeholder,
.theme-dark textarea::placeholder {
  color: var(--color-text-muted);
}

/* === Premium glassmorphism cards === */
.glass-card {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
}

/* Gradient borders */
.gradient-border {
  position: relative;
}
.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  padding: 1px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask-composite: xor;
  border-radius: inherit;
  pointer-events: none;
}


/* Fallback gradient frames for scroll animations */
.fallback-frame-start {
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 30% 50%, color-mix(in srgb, var(--color-accent) 30%, transparent) 0%, transparent 70%),
    radial-gradient(ellipse at 70% 50%, color-mix(in srgb, var(--color-primary) 20%, transparent) 0%, transparent 70%),
    var(--color-secondary);
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.fallback-frame-end {
  width: 100%;
  height: 100%;
  background:
    conic-gradient(from 180deg at 50% 50%,
      color-mix(in srgb, var(--color-accent) 20%, transparent),
      color-mix(in srgb, var(--color-primary) 30%, transparent),
      color-mix(in srgb, var(--color-accent) 15%, transparent),
      color-mix(in srgb, var(--color-secondary) 40%, transparent),
      color-mix(in srgb, var(--color-accent) 20%, transparent)
    );
  border-radius: var(--border-radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.fallback-frame-inner {
  width: 60%;
  aspect-ratio: 16/10;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(255,255,255,0.03);
}