/* ============================================
   ENTROPIC CODE - WHITE BACKGROUND DESIGN
   Modern, Squarespace-inspired aesthetic
   ============================================ */

/* ============================================
   CSS VARIABLES - COLOR SYSTEM
   ============================================ */
:root {
  /* Background Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-accent: #F0F7FF;

  /* Text Colors */
  --text-primary: #1A1A1A;
  --text-secondary: #6B7280;
  --text-tertiary: #9CA3AF;

  /* Brand Accent Colors */
  --accent-primary: #0EA5E9;
  --accent-secondary: #10B981;
  --accent-tertiary: #8B5CF6;
  --accent-hover: #0284C7;

  /* Utility Colors */
  --border-light: #E5E7EB;
  --border-medium: #D1D5DB;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.12);

  /* Typography */
  --font-heading: 'Inter', 'SF Pro Display', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* ============================================
   BASE STYLES
   ============================================ */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-bold);
  line-height: 1.2;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(var(--text-5xl), 6vw, var(--text-7xl));
  font-weight: var(--font-extrabold);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: var(--font-bold);
}

h3 {
  font-size: clamp(var(--text-xl), 2.5vw, var(--text-3xl));
  font-weight: var(--font-semibold);
}

p {
  color: var(--text-secondary);
  font-size: var(--text-base);
  line-height: 1.7;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--accent-primary);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  z-index: 100;
  padding: var(--spacing-sm) 0;
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: transform var(--transition-base);
}

.logo:hover {
  transform: translateY(-2px);
}

.logo img {
  height: 50px;
  width: auto;
}

.logo-info {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-name {
  font-weight: var(--font-extrabold);
  font-size: var(--text-xl);
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo-slogan {
  font-size: var(--text-xs);
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: var(--font-bold);
}

.site-nav {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.site-nav a {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent-primary);
  background: var(--bg-accent);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  padding: 140px 0 100px;
  text-align: center;
  background: linear-gradient(180deg, var(--bg-accent) 0%, var(--bg-primary) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 120%;
  height: 120%;
  background: radial-gradient(circle at 30% 50%, rgba(14, 165, 233, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  animation: fadeInUp 0.8s ease-out;
}

.text-gradient {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.6;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats-section {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-primary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
}

.stat-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-primary);
}

.stat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  border-radius: 50%;
  color: white;
}

.stat-number {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--spacing-xs);
  line-height: 1;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: var(--spacing-2xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-subtitle {
  text-align: center;
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 700px;
  margin: var(--spacing-md) auto 0;
}

/* ============================================
   BENTO GRID
   ============================================ */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.card h2,
.card h3 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Bento Grid Spans */
.bento-large {
  grid-column: span 12;
}

.bento-medium {
  grid-column: span 12;
}

.bento-small {
  grid-column: span 12;
}

.bento-wide {
  grid-column: span 12;
}

@media (min-width: 768px) {
  .bento-large {
    grid-column: span 7;
    grid-row: span 2;
  }

  .bento-medium {
    grid-column: span 5;
  }

  .bento-small {
    grid-column: span 5;
  }

  .bento-wide {
    grid-column: span 12;
  }
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid-2,
.grid-3 {
  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(280px, 1fr));
}

/* ============================================
   BUTTONS
   ============================================ */
.cta-row {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-lg);
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
}

.btn-primary,
.btn {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.2);
}

.btn-primary:hover,
.btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(14, 165, 233, 0.3);
  color: white;
}

.btn-secondary {
  background: transparent;
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  box-shadow: none;
}

.btn-secondary:hover {
  background: var(--bg-accent);
  border-color: var(--accent-hover);
  color: var(--accent-hover);
  transform: translateY(-2px);
}

/* ============================================
   FORMS
   ============================================ */
input,
textarea,
button {
  font: inherit;
  width: 100%;
  padding: 12px 16px;
  margin-top: var(--spacing-xs);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition-base);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

label {
  display: block;
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  font-weight: var(--font-medium);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  border-top: 1px solid var(--border-light);
  background: var(--bg-secondary);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  text-align: left;
  align-items: start;
}

.footer-col h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.footer-col p {
  color: var(--text-secondary);
  line-height: 1.6;
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-sm);
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  transition: color var(--transition-base);
  font-size: var(--text-sm);
}

.footer-col a:hover {
  color: var(--accent-primary);
}

.footer-copy {
  grid-column: 1 / -1;
  text-align: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-light);
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}

/* ============================================
   SOCIAL LINKS
   ============================================ */
.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
}

.social-icon:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

/* ============================================
   PAGE HERO
   ============================================ */
.page-hero {
  padding: 100px 0 60px;
  background: linear-gradient(180deg, var(--bg-accent) 0%, var(--bg-primary) 100%);
  text-align: center;
}

.page-hero h1 {
  margin-bottom: var(--spacing-md);
}

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

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

/* ============================================
   CONTACT PAGE SPECIFIC
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

.contact-card {
  padding: 48px;
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.form-input {
  width: 100%;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 8px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.3s;
}

.form-input:focus {
  border-color: var(--accent-primary);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
  .hero {
    padding: 80px 0 60px;
  }

  .hero h1 {
    font-size: var(--text-4xl);
  }

  .hero p {
    font-size: var(--text-base);
  }

  /* Fixed Mobile Header */
  .site-header .container {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .logo {
    margin-bottom: var(--spacing-xs);
  }

  /* Improve Mobile Navigation */
  .site-nav {
    display: flex;
    /* Changed from none to flex */
    gap: var(--spacing-xs);
    /* Tighter spacing */
    flex-wrap: wrap;
    /* Allow wrapping */
    justify-content: center;
    /* Center items */
    width: 100%;
  }

  .site-nav a {
    font-size: var(--text-sm);
    /* Slightly smaller text */
    padding: var(--spacing-xs);
    /* Reduce padding */
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  /* Fix Contact Grid Stacking */
  .contact-grid {
    grid-template-columns: 1fr !important;
    /* Force single column */
    gap: var(--spacing-xl) !important;
  }

  .social-links {
    justify-content: center;
  }

  .bento-large,
  .bento-medium,
  .bento-small,
  .bento-wide {
    grid-column: span 12;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: var(--spacing-xs);
}

.mt-2 {
  margin-top: var(--spacing-sm);
}

.mt-3 {
  margin-top: var(--spacing-md);
}

.mt-4 {
  margin-top: var(--spacing-lg);
}

.mt-5 {
  margin-top: var(--spacing-xl);
}

.mb-1 {
  margin-bottom: var(--spacing-xs);
}

.mb-2 {
  margin-bottom: var(--spacing-sm);
}

.mb-3 {
  margin-bottom: var(--spacing-md);
}

.mb-4 {
  margin-bottom: var(--spacing-lg);
}

.mb-5 {
  margin-bottom: var(--spacing-xl);
}

/* =========================================
   Ask AI Feature
   ========================================= */

.hero-ask-ai {
  margin-top: 40px;
  text-align: left;
}

.hero-ai-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 16px;
  display: block;
}

.hero-ai-links {
  display: flex;
  gap: 16px;
  align-items: center;
}

.ai-icon-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.27);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
}

.ai-icon-link svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
  transition: transform 0.3s ease;
}


/* Hover Effects */
.ai-icon-link:hover {
  transform: translateY(-3px);
  color: white;
  border-color: transparent;
}

.ai-icon-link:hover svg {
  transform: scale(1.1);
}

.ai-icon-link[aria-label="Ask ChatGPT"]:hover {
  background: #74AA9C;
  box-shadow: 0 8px 16px rgba(116, 170, 156, 0.3);
}

.ai-icon-link[aria-label="Ask Gemini"]:hover {
  background: linear-gradient(135deg, #4E86F5, #D54F5D, #F1B62B);
  box-shadow: 0 8px 16px rgba(78, 134, 245, 0.3);
}

.ai-icon-link[aria-label="Ask Perplexity"]:hover {
  background: #23BDA0;
  box-shadow: 0 8px 16px rgba(35, 189, 160, 0.3);
}

.ai-icon-link[aria-label="Ask Claude"]:hover {
  background: #D97757;
  box-shadow: 0 8px 16px rgba(217, 119, 87, 0.3);
}

@media (max-width: 768px) {
  .hero-ask-ai {
    text-align: center;
    margin-top: 32px;
  }

  .hero-ai-links {
    justify-content: center;
  }
}

/* AI Modal */
.ai-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1001;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.ai-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.ai-modal {
  background: var(--bg-primary);
  width: 90%;
  max-width: 500px;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transform: translateY(20px);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.27);
  border: 1px solid var(--border-color);
}

.ai-modal-overlay.active .ai-modal {
  transform: translateY(0);
}

.ai-modal-header {
  padding: 20px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ai-modal-header h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.ai-modal-close {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-modal-close:hover {
  color: var(--accent-primary);
}

.ai-modal-body {
  padding: 30px 24px;
  text-align: center;
}

.ai-btn {
  display: inline-block;
  background: var(--accent-primary);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 500;
  margin-top: 20px;
  transition: background 0.2s ease;
}


.ai-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 10px;
}

.ai-link-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px 10px;
  text-decoration: none;
  transition: all 0.2s ease;
  color: var(--text-primary);
}

.ai-link-card:hover {
  background: white;
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.ai-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  margin-bottom: 12px;
  color: white;
}

/* Brand Colors */
.chatgpt-icon {
  background: #74AA9C;
  /* OpenAI Greenish */
}

.gemini-icon {
  background: linear-gradient(135deg, #4E86F5, #D54F5D, #F1B62B);
  /* Gemini Gradient */
}

.perplexity-icon {
  background: #23BDA0;
  /* Perplexity Teal */
}

.claude-icon {
  background: #D97757;
  /* Claude Orange */
}

.ai-link-card span {
  font-weight: 500;
  font-size: 0.95rem;
}