:root {
  /* Core Colors */
  --bg-primary: #0a0a0a; /* Deep dark background */
  --bg-secondary: #121212; /* Slightly lighter card background */
  --bg-tertiary: #1a1a1a;
  
  /* Accent Colors */
  --accent-blue: #2563eb; /* Corporate Blue */
  --accent-cyan: #06b6d4; /* Tech Cyan */
  --accent-purple: #7c3aed; /* Creative Purple */
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', 'Inter', system-ui, sans-serif;
  
  /* Utilities */
  --border-color: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(18, 18, 18, 0.7);
  --glass-border: rgba(255, 255, 255, 0.05);
  
  /* Spacing */
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 8rem;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

/* Global Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  padding: 1.5rem 5%;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 1000;
  transition: padding 0.3s ease;
}

.navbar.scrolled {
  padding: 1rem 5%;
}

.nav-brand {
  font-size: 1.5rem;
  font-weight: 800;
  font-family: var(--font-heading);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
}

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

.nav-ctas {
  display: flex;
  gap: 1rem;
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: var(--accent-blue);
  color: #fff;
  border: none;
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Global Footer */
.footer {
  background-color: var(--bg-secondary);
  padding: 4rem 5% 2rem;
  border-top: 1px solid var(--border-color);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 576px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

.footer-col h3 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.footer-col p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

.footer-socials a {
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

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

.newsletter-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* Pricing Cards */
.pricing-section {
    padding: var(--spacing-xxl) 5%;
    background: var(--bg-primary);
}
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 4rem auto 0;
}
.pricing-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease;
}
.pricing-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}
.pricing-card.popular {
    border-color: var(--accent-blue);
    position: relative;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.15);
}
.pricing-card.popular::before {
    content: 'Most Popular';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-blue);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}
.pricing-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}
.pricing-price {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 2rem;
    color: var(--text-primary);
}
.pricing-price span {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}
.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}
.pricing-features li {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.pricing-features li::before {
    content: '✓';
    color: var(--accent-cyan);
    font-weight: bold;
}

.newsletter-form input {
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  flex-grow: 1;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Typography Utility */
.gradient-text {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Layout Utilities */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 5%;
}

.section {
  padding: var(--spacing-xxl) 0;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none; /* Mobile menu needed */
  }
  .nav-ctas {
    display: none; /* Mobile menu needed */
  }
}
/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0.5rem;
}

@media (max-width: 992px) {
    .mobile-menu-toggle {
        display: block;
    }
    .nav-links, .nav-ctas {
        display: none;
        width: 100%;
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    .nav-links {
        padding-top: 2rem;
        padding-bottom: 1rem;
        order: 3;
    }
    .nav-ctas {
        padding-bottom: 2rem;
        order: 4;
    }
    .navbar.mobile-active .nav-links,
    .navbar.mobile-active .nav-ctas {
        display: flex;
    }
    .navbar.mobile-active {
        background: var(--bg-primary);
    }
}