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

:root {
  --primary: #0a0e27;
  --primary-light: #1a1f3a;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: #a5b4fc;
  --secondary: #14b8a6;
  --secondary-light: #2dd4bf;
  --dark: #020617;
  --gray: #64748b;
  --light-gray: #f1f5f9;
  --white: #ffffff;
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--white);
  color: var(--primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   UTILITIES
   ============================================ */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 3px solid var(--light-gray);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--white);
  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, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-secondary:hover {
  background: var(--accent);
  color: var(--white);
}

/* ============================================
   NAVIGATION
   ============================================ */

nav {
  background: var(--primary);
  border-bottom: 1px solid rgba(99, 102, 241, 0.1);
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav .nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav .logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  text-decoration: none;
  background: linear-gradient(135deg, var(--accent-glow), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

nav .nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav .nav-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

nav .nav-links a:hover {
  color: var(--accent-glow);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background: var(--primary);
  color: var(--white);
  padding: 3rem 2rem;
  text-align: center;
  margin-top: 4rem;
  border-top: 1px solid rgba(99, 102, 241, 0.2);
}

footer p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

footer strong {
  color: var(--white);
  font-weight: 600;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }

  nav .nav-links {
    gap: 1rem;
  }
}