/* Global Settings & Design System */
:root {
  --bg-color: #0f172a; /* Deep Space Slate */
  --panel-bg: #1e293b; /* Constellation slate */
  --border-color: rgba(255, 255, 255, 0.08);
  --primary-color: #0ea5e9;     /* Cosmic Cyan / Sky Blue */
  --primary-hover: #0284c7;
  --secondary-color: #a855f7; /* Purple (kept for now, but primary is cyan) */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --font-family: 'Inter', system-ui, sans-serif;
  --radius: 12px;
  --radius-lg: 24px;
  --transition: all 0.2s ease-in-out;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-family);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: #fff;
}

h1 { font-size: 3rem; margin-bottom: 1rem; }
h2 { font-size: 2.25rem; margin-bottom: 1.5rem; }
p { color: var(--text-muted); margin-bottom: 1.5rem; }

/* Buttons & Links */
a { text-decoration: none; color: inherit; transition: var(--transition); }
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  background: transparent;
  color: var(--text-main);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.glass-card {
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

/* Nav */
nav {
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  position: fixed;
  top: 0; width: 100%; z-index: 50;
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: white;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.logo::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 24px;
  /* Abstract Vela Sail / Constellation Triangle SVG */
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%230ea5e9"><path d="M21 3L3 21h18V3z"/></svg>');
  background-size: contain;
  background-repeat: no-repeat;
  margin-right: 0.2rem;
}
.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

/* Hero Section */
.hero {
  padding: 10rem 0 6rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 60%);
  z-index: -1;
  pointer-events: none;
}

.hero h1 span {
  background: linear-gradient(135deg, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  .hero { padding: 8rem 0 4rem; }
  .hero-buttons { flex-direction: column; }
  .nav-links { display: none; } /* Simplified mobile nav for landing */
}

/* Pricing Section */
.pricing { padding: 5rem 0; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem; margin-top: 3rem;
}
.price-card {
  display: flex; flex-direction: column;
}
.price-card h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.price { font-size: 2.5rem; font-weight: 700; color: #fff; margin-bottom: 1rem; }
.price span { font-size: 1rem; color: var(--text-muted); font-weight: 400; }
.price-features { margin-bottom: 2rem; flex-grow: 1; list-style: none; }
.price-features li { margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0.5rem;}
.price-features li::before { content: '✓'; color: var(--success); font-weight: bold; }

/* Utilities */
.text-center { text-align: center; }
.mt-4 { margin-top: 1rem; } .mb-4 { margin-bottom: 1rem; }
.mt-auto { margin-top: auto; }