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

/* Reset & Variables */
:root {
  --bg-color: #F9FAFB;
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --accent-mint: #10B981;
  --accent-amber: #F59E0B;
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --border-color: #E5E7EB;
  --section-bg-alt: #F3F4F6;
  --max-width: 1200px;
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

/* Typography Utility */
.mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 5rem 0;
}

/* Global Components */
nav {
  height: 80px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  gap: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
}

footer {
  padding: 3rem 0;
  border-top: 1px solid var(--border-color);
  background: var(--bg-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background-color: var(--text-primary);
  color: white;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  background-color: var(--section-bg-alt);
  border-color: var(--text-primary);
}

/* Grid System */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}

@media (max-width: 768px) {
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Hero */
.hero {
  text-align: center;
  padding: 6rem 0 0 0;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-placeholder {
  width: 100%;
  padding: 4rem 2rem;
  background: var(--section-bg-alt); /* Slightly different from page bg for framing */
  margin-top: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.tablet-frame {
  max-width: 900px;
  width: 100%;
  box-shadow: 0 40px 100px -20px rgba(0,0,0,0.15); /* Soft, professional shadow for the tablet */
  background: #000;
  border-radius: 32px;
  padding: 12px;
  position: relative;
}

.tablet-screen {
  width: 100%;
  aspect-ratio: 4/3;
  background: #111827;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

.tablet-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.watermark {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  background: rgba(17, 24, 39, 0.85); /* Dark charcoal with transparency */
  color: var(--accent-mint);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-left: 3px solid var(--accent-mint);
  pointer-events: none;
  max-width: 320px;
  line-height: 1.4;
  z-index: 10;
}

/* Anti-AI Block */
.anti-ai-block {
  background-color: var(--section-bg-alt);
}

.anti-ai-block .container {
  max-width: 800px;
  text-align: center;
}

.anti-ai-block h2 {
  font-size: 2.25rem;
  margin-bottom: 1.5rem;
}

.anti-ai-block p {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* Antigravity Grid */
.grid-item h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.grid-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Routing Module */
.routing-module {
  display: flex;
  justify-content: center;
  gap: 1rem;
  padding-bottom: 6rem;
}

/* Legal & Text Heavy Layouts */
.legal-content {
  max-width: 65ch;
  margin: 4rem auto;
}

.legal-content h1 {
  margin-bottom: 2rem;
}

.legal-content h3 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.legal-content p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.callout-box {
  background: var(--section-bg-alt);
  padding: 2rem;
  border-left: 4px solid var(--text-primary);
  margin-bottom: 3rem;
}

.callout-box p {
  margin-bottom: 0;
  font-weight: 500;
  color: var(--text-primary);
}

/* Split Layout */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: start;
}

@media (max-width: 768px) {
  .split-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.split-col h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* Status Indicators */
.status-mint { color: var(--accent-mint); }
.status-amber { color: var(--accent-amber); }

/* SVG Diagram Placeholder */
.diagram-placeholder {
  width: 100%;
  padding: 4rem;
  background: white;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}