:root {
  /* Color Palette - Dark Enterprise Tech */
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1623;
  --bg-tertiary: #16243d;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --accent-primary: #38bdf8; /* Sky Blue */
  --accent-glow: rgba(56, 189, 248, 0.4);
  --border-color: rgba(255, 255, 255, 0.1);
  --card-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.05);
  
  /* Typography */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

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

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

h1, h2, h3, h4 {
  color: var(--text-primary);
  line-height: 1.2;
  font-weight: 700;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

/* Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent-primary);
  color: #0f172a;
  box-shadow: 0 0 15px var(--accent-glow);
}

.btn-primary:hover {
  background: #7dd3fc;
  transform: translateY(-2px);
  box-shadow: 0 0 25px var(--accent-glow);
}

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

.btn-outline:hover {
  background: rgba(56, 189, 248, 0.1);
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 4rem auto;
  color: var(--text-secondary);
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
}

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

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  background: linear-gradient(to right, rgba(10,14,23,0.9), rgba(10,14,23,0.7)), url('hero_bg.png');
  background-size: cover;
  background-position: center;
}

.hero-content {
  max-width: 700px;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(120deg, var(--text-primary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
}

/* Stats/Trust Bar */
.trust-bar {
  border-bottom: 1px solid var(--border-color);
  padding: 2rem 0;
  background: var(--bg-secondary);
  text-align: center;
}

.trust-bar p {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.7;
}

/* Problem Section */
.problem {
  padding: 8rem 0;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 12px;
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-primary);
}

.card h3 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.card.warning {
  border-left: 4px solid #ef4444; /* Red warning accent */
}

/* Solutions Section */
.solution {
  background: var(--bg-secondary);
  padding: 8rem 0;
}

.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.feature-item {
  display: flex;
  gap: 1.5rem;
}

.feature-icon {
  width: 50px;
  height: 50px;
  background: rgba(56, 189, 248, 0.1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.architecture-viz img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 20px 50px -10px rgba(0,0,0,0.5);
  border: 1px solid var(--border-color);
}

/* Footer */
footer {
  padding: 4rem 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  background: var(--bg-secondary);
}

.footer-nav {
  margin-bottom: 2rem;
}

.footer-nav a {
  margin: 0 1rem;
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .solution-grid {
    grid-template-columns: 1fr;
  }
  
  .nav-links {
    display: none; 
    /* Ideally add mobile menu logic here */
  }
}