@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,400;0,500;0,600;0,700;0,900;1,500&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  /* Default Dark Mode */
  --bg: #000000;
  --ink: #FFFFFF;
  --ink-muted: #86868B;
  --accent: #2997FF;
  --card-bg: #1D1D1F;
  --line: rgba(255, 255, 255, 0.15);
  --header-bg: rgba(0, 0, 0, 0.8);
  --hero-gradient-1: #FFFFFF;
  --hero-gradient-2: #86868B;
  --plus-bg: #FFFFFF;
  --plus-ink: #1D1D1F;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

[data-theme="light"] {
  --bg: #F5F5F7;
  --ink: #1D1D1F;
  --ink-muted: #86868B;
  --accent: #0066CC;
  --card-bg: #FFFFFF;
  --line: #E5E5EA;
  --header-bg: rgba(245, 245, 247, 0.8);
  --hero-gradient-1: #1D1D1F;
  --hero-gradient-2: #434345;
  --plus-bg: #1D1D1F;
  --plus-ink: #FFFFFF;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-weight: 900;
  letter-spacing: -0.05em;
  margin-top: 0;
}

a {
  color: var(--ink);
  text-decoration: none;
  transition: opacity 0.2s;
}

/* Header & Nav */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  position: fixed;
  top: 0;
  width: 100%;
  box-sizing: border-box;
  background: var(--header-bg);
  backdrop-filter: saturate(180%) blur(20px);
  z-index: 100;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

header .logo {
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

nav {
  display: flex;
  gap: 2rem;
}

nav a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink);
  opacity: 0.8;
}

nav a:hover {
  opacity: 1;
}

/* Massive Hero Typography */
.hero {
  text-align: center;
  padding: 14rem 5% 10rem;
  max-width: 1200px;
  margin: 0 auto;
}

.massive-text {
  font-size: clamp(4rem, 9vw, 9rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.06em;
  margin-bottom: 2rem;
}

.massive-text .line-1 {
  display: block;
  background: linear-gradient(135deg, var(--hero-gradient-1) 0%, var(--hero-gradient-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.massive-text .line-2 {
  display: block;
  color: var(--ink-muted);
}

.hero p {
  color: var(--ink-muted);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  max-width: 800px;
  margin: 0 auto 3rem;
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* Scroll-driven animations */
@media (prefers-reduced-motion: no-preference) {
  @supports ((animation-timeline: view()) and (animation-range: entry)) {
    @keyframes fade-scale-up {
      from { opacity: 0; transform: translateY(50px) scale(0.95); }
      to { opacity: 1; transform: translateY(0) scale(1); }
    }
    
    .apple-reveal {
      animation: fade-scale-up 1s cubic-bezier(0.16, 1, 0.3, 1) both;
      animation-timeline: view();
      animation-range: entry 5% cover 30%;
    }
  }
}

/* Fallback classes for IntersectionObserver */
.fallback-reveal {
  opacity: 0;
  transform: translateY(50px) scale(0.95);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.fallback-reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Stories */
section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 5%;
}

.section-title {
  text-align: center;
  font-size: clamp(3rem, 5vw, 5rem);
  margin-bottom: 4rem;
}

.stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.story-card {
  background: var(--card-bg);
  border-radius: 24px;
  padding: 3rem 2.5rem;
  box-shadow: 0 10px 40px rgba(0,0,0,0.04);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s;
}

.story-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 60px rgba(0,0,0,0.08);
}

.story-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}

.story-card h3 {
  font-size: 1.8rem;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.story-card p {
  color: var(--ink-muted);
  font-size: 1.1rem;
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 3rem;
  text-align: left;
}

.feature-card h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feature-card p {
  color: var(--ink-muted);
  font-size: 1.1rem;
}

/* Lens Gap Oversized */
.lens-gap-oversized {
  font-size: clamp(3rem, 7vw, 7rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.05em;
  text-align: center;
  color: var(--ink);
  margin: 0;
}

/* Pricing */
.pricing-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.tier {
  background: var(--card-bg);
  padding: 4rem 3rem;
  border-radius: 24px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.04);
}

.tier.plus {
  background: var(--plus-bg);
  color: var(--bg);
}

.tier.plus h3 { color: var(--plus-ink); }

.tier.plus p {
  color: #86868B;
}

.tier h3 {
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.tier p {
  color: var(--ink-muted);
  font-size: 1.2rem;
}

.tier ul {
  list-style: none;
  padding: 0;
  margin: 3rem 0 0;
}

.tier ul li {
  padding: 1rem 0;
  border-top: 1px solid rgba(0,0,0,0.05);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tier.plus ul li {
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* Footer */
footer {
  text-align: center;
  padding: 4rem 5%;
  color: var(--ink-muted);
  font-size: 0.9rem;
  margin-top: 6rem;
  border-top: 1px solid var(--line);
}

/* 3D Perspective Containers */
.perspective-container {
    perspective: 1200px;
    transform-style: preserve-3d;
}

/* Base styles for JS driven elements */
.scroll-3d-card {
    will-change: transform, opacity;
    transform-origin: center bottom;
    opacity: 0; 
}

.scroll-3d-text {
    will-change: transform, opacity;
    opacity: 0;
}

.scroll-3d-scale {
    will-change: transform, opacity, letter-spacing;
    transform-origin: center center;
}

/* Remove CSS @supports view() to rely entirely on the JS scrubber */
.apple-reveal, .fallback-reveal {
    animation: none !important;
    transition: none !important;
    opacity: 1; /* Reset */
    transform: none;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--ink);
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background 0.2s;
}
.theme-toggle:hover {
  background: var(--line);
}
.theme-toggle svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}
[data-theme="light"] .icon-moon { display: block; }
[data-theme="light"] .icon-sun { display: none; }
:root:not([data-theme="light"]) .icon-moon { display: none; }
:root:not([data-theme="light"]) .icon-sun { display: block; }