:root {
  /* Colors */
  --color-navy: #0B1220;
  --color-teal: #16C2A5;
  --color-blue: #3B82F6;
  --color-offwhite: #F8FAFC;
  --color-slate: #475569;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;
  
  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --section-padding: 80px 20px;
  --container-max-width: 1200px;
  
  /* Shadows & Corners */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-offwhite);
  color: var(--color-navy);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

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

button {
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: all 0.2s ease;
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  width: 100%;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  gap: 8px;
}

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

.btn-primary:hover {
  background-color: #2563EB;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.feature-card {
  background: white;
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-navy);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-offwhite);
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block !important;
    font-size: 1.5rem;
    z-index: 1001;
  }
  
  header nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  
  header nav.active {
    display: flex;
  }
}

.text-slate { color: var(--color-slate); }
.text-teal { color: var(--color-teal); }

section {
  padding: var(--section-padding);
}

/* Header Styles */
header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  padding: 16px 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo span {
  color: var(--color-teal);
}

nav {
  display: flex;
  gap: 32px;
  align-items: center;
}

@media (max-width: 768px) {
  nav { display: none; }
  section { padding: 60px 20px; }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}