/* 
 * Modern AI Theme - Bixing Technology
 * A sleek, professional theme with AI-related visual elements
 */

:root {
  /* Primary color palette */
  --primary-color: #0066FF;
  --primary-light: #4D94FF;
  --primary-dark: #0047B3;
  --secondary-color: #7000FF;
  --accent-color: #00C2FF;
  
  /* Golden-Orange Accents */
  --gold: #FFB800;
  --gold-light: #FFCF40;
  --gold-dark: #E6A500;
  --orange: #FF8A00;
  --orange-light: #FFA640;
  
  /* Card Colors */
  --card-blue: #0066FF;
  --card-purple: #7000FF;
  --card-teal: #00C2FF;
  --card-green: #00D68F;
  --card-pink: #FF3E8F;
  
  /* Dark Theme Colors */
  --dark-bg: #0A1020;
  --darker-bg: #121A29;
  --medium-dark: #1A2437;
  --dark-surface: #1E293B;
  --dark-border: #2A3A50;
  
  /* Section Background Colors */
  --demo-bg: #141E35;
  --portfolio-bg: #1A1A2E;
  --testimonials-bg: #192339;
  --insights-bg: #0F172A;
  
  /* Text colors */
  --white: #FFFFFF;
  --text-light: #E1E7EF;
  --text-medium: #94A3B8;
  --text-dark: #64748B;
  --dark-color: #0A1020;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  --gradient-blue: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  --gradient-purple: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --gradient-gold: linear-gradient(135deg, var(--gold), var(--orange));
  --gradient-warm: linear-gradient(135deg, var(--orange), var(--gold-light));
  --gradient-golden-orange: linear-gradient(135deg, var(--gold-light), var(--orange-light));
  
  /* Card Gradients */
  --gradient-card-1: linear-gradient(135deg, var(--card-blue), var(--card-teal));
  --gradient-card-2: linear-gradient(135deg, var(--card-purple), var(--card-pink));
  --gradient-card-3: linear-gradient(135deg, var(--card-teal), var(--card-green));
  --gradient-card-4: linear-gradient(135deg, var(--gold), var(--orange));
  --gradient-card-5: linear-gradient(135deg, var(--card-green), var(--card-blue));
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.2);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.05);
  
  /* Animation speeds */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
}

/* Base styles */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  color: var(--text-light);
  background-color: var(--dark-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--white);
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.75rem;
}

p {
  margin-bottom: 1.5rem;
}

.section-title {
  position: relative;
  display: inline-block;
  margin-bottom: 1.5rem;
  z-index: 1;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--gradient-blue);
  border-radius: var(--radius-full);
  z-index: -1;
}

.text-center .section-title::after {
  left: 50%;
  transform: translateX(-50%);
}

/* Buttons */
.btn {
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all var(--transition-normal);
}

.btn-primary {
  background: var(--gradient-gold);
  border: none;
  color: var(--dark-color);
  font-weight: 600;
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--gradient-gold);
  box-shadow: 0 5px 15px rgba(255, 184, 0, 0.3);
  transform: translateY(-2px);
}

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

.btn-outline-primary:hover,
.btn-outline-primary:focus {
  background-color: var(--gold);
  color: var(--dark-color);
  border-color: var(--gold);
}

.btn-light {
  background: var(--white);
  color: var(--primary-color);
  border: none;
  box-shadow: var(--shadow-md);
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* AI-themed elements */
.ai-circuit-bg {
  position: relative;
}

.ai-circuit-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('data:image/svg+xml;base64,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');
  opacity: 0.05;
  z-index: -1;
}

.ai-nodes-bg {
  position: relative;
}

.ai-nodes-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('data:image/svg+xml;base64,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');
  opacity: 0.1;
  z-index: -1;
}

/* Animated gradient border */
.gradient-border {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.gradient-border::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--gradient-primary);
  z-index: -1;
  border-radius: inherit;
  animation: rotate 3s linear infinite;
}

@keyframes rotate {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Card styles */
.card {
  border: none;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* Animations */
.fade-in {
  animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Responsive adjustments */
@media (max-width: 992px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .section-padding {
    padding: 80px 0;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .section-padding {
    padding: 60px 0;
  }
}

/* Navbar styles */
.navbar {
  background: var(--dark-surface);
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--dark-border);
}

.navbar-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: space-between;
}

.navbar-nav li {
  margin-right: 20px;
}

.navbar-nav a {
  color: var(--text-light);
  text-decoration: none;
  transition: all var(--transition-normal);
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--white);
  background: var(--gradient-golden-orange);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
}

/* Fix for white space at bottom of page */
html {
  background-color: var(--dark-bg);
}

body {
  background-color: var(--dark-bg);
  min-height: 100vh;
}