:root {
  /* Emerald Green Theme Colors */
  --color-primary: #10b981;
  --color-primary-light: #34d399;
  --color-primary-dark: #059669;
  --color-bg-dark: #0f172a; /* Slate 900 */
  --color-bg-darker: #020617; /* Slate 950 */
  --color-text-light: #f8fafc;
  --color-text-muted: #94a3b8;
  
  /* Glassmorphism Variables */
  --glass-bg: rgba(15, 23, 42, 0.4);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-shadow: 0 4px 24px 0 rgba(0, 0, 0, 0.2);
  
  /* Layout */
  --container-width: 1200px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.4s ease;
}

[data-theme="light"] {
  --color-bg-dark: #f8fafc;
  --color-bg-darker: #ffffff;
  --color-text-light: #0f172a;
  --color-text-muted: #475569;
  --glass-bg: rgba(255, 255, 255, 0.5);
  --glass-border: rgba(0, 0, 0, 0.04);
  --glass-shadow: 0 4px 24px 0 rgba(0, 0, 0, 0.06);
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
  background-color: var(--color-bg-darker);
  color: var(--color-text-light);
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }

.heading-xl { font-size: clamp(2.5rem, 5vw, 4.5rem); }
.heading-lg { font-size: clamp(2rem, 4vw, 3rem); }
.heading-md { font-size: clamp(1.5rem, 3vw, 2.5rem); }

/* Layout Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 6rem 0;
}

/* Glassmorphism Utility */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInSlideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInSlideUp 0.8s ease-out forwards;
}

.glow-effect {
  position: relative;
}

.glow-effect::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: inherit;
  box-shadow: 0 0 20px var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: -1;
}

.glow-effect:hover::before {
  opacity: 0.4;
}

/* Floating Particles Container */
#particles-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}