@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
  --bg-light: #f8fafc;
  --panel-bg: rgba(255, 255, 255, 0.7);
  --panel-border: rgba(0, 0, 0, 0.05);
  --accent-color: #2563eb;
  --accent-glow: rgba(37, 99, 235, 0.2);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --success: #10b981;
}

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

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-light);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

/* Dynamic Grid Background */
.bg-grid {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: 
    linear-gradient(to right, rgba(37, 99, 235, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -1;
  pointer-events: none;
}

.bg-glow {
  position: fixed;
  top: -20%; left: -10%;
  width: 70vw; height: 70vw;
  background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, rgba(255,255,255,0) 70%);
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
}

/* Navbar */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--panel-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.01);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-brand img {
  height: 36px;
}

.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  transition: all 0.3s ease;
  font-size: 1rem;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--accent-color);
}

/* Layout */
main {
  flex: 1;
  padding: 0 5%;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 6rem 0 4rem 0;
  animation: fadeIn 1s ease-out forwards;
}

.version-tag {
  display: inline-block;
  background: rgba(37, 99, 235, 0.1);
  color: var(--accent-color);
  padding: 6px 16px;
  border-radius: 30px;
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(37, 99, 235, 0.2);
}

.hero h1 {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  background: linear-gradient(135deg, #0f172a 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1.5rem;
}

.hero p.subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 2.5rem auto;
  line-height: 1.6;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--accent-color);
  color: white;
  padding: 16px 36px;
  border-radius: 14px;
  font-weight: 800;
  font-size: 1.1rem;
  text-decoration: none;
  box-shadow: 0 10px 25px var(--accent-glow);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255,255,255,0.1);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.3);
  background: #1d4ed8;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin: 4rem 0;
}

.feature-card {
  background: var(--panel-bg);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  padding: 2.5rem;
  transition: all 0.4s ease;
  box-shadow: 0 10px 30px rgba(0,0,0,0.02);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(37, 99, 235, 0.2);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.05);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  display: inline-block;
  padding: 15px;
  background: white;
  border-radius: 16px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.04);
}

.feature-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.feature-card p {
  color: var(--text-muted);
  line-height: 1.6;
}

/* Standard Panels (Legal/Docs) */
.panel {
  background: var(--panel-bg);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  padding: 3.5rem;
  box-shadow: 0 20px 40px rgba(0,0,0,0.02);
  margin: 3rem 0;
}

.panel h1 { font-size: 2.5rem; margin-bottom: 1rem; color: var(--text-main); }
.panel h2 { font-size: 1.8rem; margin: 2.5rem 0 1rem 0; color: var(--accent-color); }
.panel h3 { font-size: 1.3rem; margin: 2rem 0 1rem 0; color: var(--text-main); }
.panel p { line-height: 1.8; margin-bottom: 1.2rem; color: var(--text-muted); font-size: 1.05rem; }
.panel ul, .panel ol { margin-left: 20px; margin-bottom: 1.5rem; color: var(--text-muted); line-height: 1.8; }
.panel li { margin-bottom: 0.5rem; }

.legal-header {
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 2rem;
  margin-bottom: 2rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 3rem 5%;
  color: var(--text-muted);
  border-top: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  margin-top: auto;
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
  margin: 0 10px;
  font-weight: 600;
  transition: color 0.3s;
}

footer a:hover {
  color: var(--accent-color);
}

/* Animation Container */
.animation-wrapper {
  margin: 4rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.animation-container {
  position: relative;
  width: 100%;
  max-width: 1000px;
  background: #080710;
  border-radius: 20px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.animation-container canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 600;
  display: block;
}

.hud {
  position: absolute;
  top: 20px;
  left: 20px;
  pointer-events: none;
  background: rgba(0, 0, 0, 0.6);
  padding: 10px 15px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-family: 'Courier New', monospace;
  font-size: 12px;
  color: #00ffcc;
  z-index: 10;
}

.hud span { color: #ff0055; }

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
  color: var(--text-main);
  font-weight: 800;
}

/* System Requirements */
.sys-req-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  background: var(--panel-bg);
  padding: 2rem;
  border-radius: 20px;
  border: 1px solid var(--panel-border);
}

.req-box h4 {
  color: var(--accent-color);
  margin-bottom: 10px;
}

.req-box ul {
  list-style: none;
  color: var(--text-muted);
}
.req-box ul li { margin-bottom: 8px; font-size: 0.95rem; }
.req-box ul li::before { content: "✓ "; color: var(--success); font-weight: bold;}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 3rem; }
  .nav-links { display: none; }
  .panel { padding: 2rem; }
}