/* Design System */
:root {
  /* Color palette (HSL) */
  --color-primary-h: 210;   /* Blue-ish */
  --color-primary-s: 80%;
  --color-primary-l: 55%;
  --color-secondary-h: 340; /* Pink-ish */
  --color-secondary-s: 70%;
  --color-secondary-l: 60%;
  --color-bg-light: hsl(0, 0%, 100%);
  --color-bg-dark: hsl(210, 30%, 10%);
  --color-text-light: hsl(210, 15%, 20%);
  --color-text-dark: hsl(0, 0%, 95%);
  --gradient-bg: linear-gradient(135deg, hsl(var(--color-primary-h), var(--color-primary-s), 65%), hsl(var(--color-secondary-h), var(--color-secondary-s), 55%));
  --font-family: 'Outfit', sans-serif;
  --color-bg: var(--color-bg-light);
  --color-text: var(--color-text-light);
  --transition-speed: 0.3s;
}

/* Dark mode */
body.dark {
  --color-bg: var(--color-bg-dark);
  --color-text: var(--color-text-dark);
}

/* Light mode defaults */
body {
  background: var(--gradient-bg);
  color: var(--color-text);
  font-family: var(--font-family);
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 8rem 0;
  text-align: center;
  color: var(--color-text-light);
  background: transparent;
  overflow: hidden;
}

/* Header and navigation */
.site-header {
  position: sticky;
  top: 0;
  background: var(--gradient-bg);
  padding: 1rem 0;
  z-index: 1000;
}

/* Footer styling matching .site-footer */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-text-dark);
  padding: 2rem 0;
  text-align: center;
}

.site-footer a { color: var(--color-text-dark); }
.menu a {
  color: var(--color-text);
  margin-left: 1rem;
  text-decoration: none;
  transition: color var(--transition-speed) ease;
}
.menu a:hover,
.menu a.active-page {
  color: hsl(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l));
}

/* Highlight */
.headline-highlight {
  color: hsl(var(--color-secondary-h), var(--color-secondary-s), 70%);
}

/* Glassmorphism cards */
.glass-card {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 1.5rem;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}
.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease;
}
.reveal.fade-in {
  opacity: 1;
  transform: none;
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Utility classes */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.grid {
  display: grid;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  font-family: var(--font-family);
  font-weight: 600;
  background: hsl(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l));
  color: #fff;
  text-decoration: none;
  transition: background var(--transition-speed) ease, transform var(--transition-speed) ease;
}
.btn:hover {
  background: hsl(var(--color-primary-h), var(--color-primary-s), calc(var(--color-primary-l) - 10%));
  transform: translateY(-2px);
}
.btn-primary {
  background: hsl(var(--color-primary-h), var(--color-primary-s), var(--color-primary-l));
}
.btn-secondary {
  background: hsl(var(--color-secondary-h), var(--color-secondary-s), var(--color-secondary-l));
}

/* Dark mode toggle */
.theme-toggle {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  background: var(--color-bg-light);
  border: 1px solid var(--color-text-light);
  border-radius: 9999px;
  padding: 0.5rem;
  cursor: pointer;
  z-index: 1000;
}

/* Micro-animations */
.fade-in {
  opacity: 0;
  animation: fadeIn 0.8s forwards;
}
@keyframes fadeIn {
  to { opacity: 1; }
}

/* Responsive utilities */
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Additional component styles (example) */
.header { padding: 2rem 0; }
.footer { padding: 2rem 0; text-align: center; }