/* IBM Quantum-inspired CSS Styles */
:root {
  --primary-blue: #0f62fe;
  --primary-purple: #9B5CFF;
  --dark-bg: #161616;
  --light-bg: #f4f4f4;
  --text-primary: #161616;
  --text-secondary: #525252;
  --text-light: #ffffff;
  --border-subtle: #e0e0e0;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
}

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

body {
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--light-bg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3rem;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 2.25rem;
  color: var(--primary-blue);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.75rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  font-size: 1.125rem;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.hero {
  background: linear-gradient(135deg, #f4f4f4 0%, #e8f4ff 50%, #f0e6ff 100%);
  text-align: center;
  padding: var(--spacing-xxl) 0;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: 1.5rem;
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
  color: var(--text-secondary);
}

/* Grid Layout */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Cards */
.card {
  background: white;
  border-radius: 12px;
  padding: var(--spacing-lg);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-subtle);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(15, 98, 254, 0.15);
}

.card h3 {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.card p {
  margin-bottom: var(--spacing-md);
}

.card .quote-block {
  margin: auto 0;
}

.card .text-center {
  margin-top: auto;
  padding-top: var(--spacing-md);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  color: var(--text-light);
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  margin-top: auto;
  text-align: center;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(15, 98, 254, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--text-light);
}

/* Navigation */
.nav {
  background: white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md);
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: color 0.3s ease;
}

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

/* Code blocks */
.quote-block {
  background: linear-gradient(135deg, #f8f9ff, #f0e6ff);
  border-left: 4px solid var(--primary-purple);
  padding: var(--spacing-md) var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: var(--text-primary);
}

.quote-block p {
  margin-bottom: 0;
  font-size: 1.25rem;
}

/* Lists */
ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}

li strong {
  color: var(--text-primary);
}

/* Footer */
.footer {
  background: var(--dark-bg);
  color: var(--text-light);
  text-align: center;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xxl);
}

.footer p {
  color: #a6a6a6;
  margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    font-size: 1.25rem;
  }
  
  h1 {
    font-size: 2.25rem;
  }
  
  h2 {
    font-size: 1.875rem;
  }
  
  .nav .container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .nav-links {
    gap: var(--spacing-md);
  }
  
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}