/* ========================================
   INTEGRATED INTELLIGENCE - Design System
   ======================================== */

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

/* CSS Variables */
:root {
  /* Colors */
  --color-primary: #0a1628;
  --color-primary-light: #111d2e;
  --color-primary-lighter: #1a2a3f;
  --color-accent: #0891b2;
  --color-accent-light: #22d3ee;
  --color-accent-glow: rgba(8, 145, 178, 0.3);
  --color-text: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-border: rgba(148, 163, 184, 0.1);
  --color-card: rgba(17, 29, 46, 0.6);
  
  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  
  /* Layout */
  --max-width: 1200px;
  --nav-height: 220px;
  
  /* Effects */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--color-accent-glow);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --transition: 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--color-primary);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p { color: var(--color-text-secondary); }

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

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

em, i { font-style: italic; }

/* Utility Classes */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-narrow { max-width: 800px; }

.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-secondary); }
.text-small { font-size: 0.875rem; }
.text-uppercase { text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.75rem; font-weight: 600; }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.flex { display: flex; }
.flex-center { justify-content: center; align-items: center; }

.grid { display: grid; gap: var(--space-xl); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 968px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: transparent;
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  height: 200px;
  width: auto;
}

@media (max-width: 768px) {
  .nav-logo {
    height: 120px;
  }
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, #0e7490 100%);
  color: white;
  box-shadow: 0 4px 20px var(--color-accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--color-accent-glow);
  color: white;
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-primary-lighter);
  border-color: var(--color-accent);
  color: var(--color-text);
}

.btn-ghost {
  background: transparent;
  color: var(--color-accent);
  padding: 0.875rem 1rem;
}

.btn-ghost:hover { color: var(--color-accent-light); }

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(8, 145, 178, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(8, 145, 178, 0.1) 0%, transparent 40%),
    linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  z-index: -1;
}

.hero-content {
  max-width: 700px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-lg);
}

.hero-title {
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-title em {
  color: var(--color-accent);
  -webkit-text-fill-color: var(--color-accent);
  font-style: italic;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s ease forwards;
  opacity: 0;
}

/* Sections */
.section {
  padding: var(--space-4xl) 0;
}

.section-alt {
  background: var(--color-primary-light);
}

/* Cards */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(8, 145, 178, 0.3);
  box-shadow: var(--shadow-lg);
}

.card-accent {
  border-left: 3px solid var(--color-accent);
}

/* Service Cards */
.service-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.service-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.service-desc {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* Metrics */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
}

.metric {
  text-align: center;
  padding: var(--space-xl);
}

.metric-value {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.metric-label {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.metric-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Quote Block */
.quote-block {
  position: relative;
  padding: var(--space-2xl);
  background: var(--color-card);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
}

.quote-block::before {
  content: '"';
  position: absolute;
  top: var(--space-md);
  left: var(--space-lg);
  font-family: var(--font-display);
  font-size: 5rem;
  color: var(--color-accent);
  opacity: 0.3;
  line-height: 1;
}

.quote-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
  position: relative;
  z-index: 1;
}

.quote-source {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* Daily Quote Widget */
.daily-quote {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary-lighter) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-width: 700px;
  margin: 0 auto;
}

.daily-quote-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.daily-quote-text {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.daily-quote-chapter {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Book Section */
.book-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-4xl);
  align-items: center;
}

@media (max-width: 868px) {
  .book-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.book-image-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
}

.book-glow {
  position: absolute;
  width: 80%;
  height: 80%;
  background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 70%);
  filter: blur(40px);
  z-index: 0;
}

.book-image {
  position: relative;
  z-index: 1;
  max-width: 100%;
  height: auto;
  max-height: 500px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  transform: perspective(1000px) rotateY(-5deg);
  transition: var(--transition);
}

.book-image:hover {
  transform: perspective(1000px) rotateY(0deg);
}

.book-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.8rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.book-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  margin-bottom: var(--space-sm);
}

.book-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.book-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
}

.book-cta {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

@media (max-width: 868px) {
  .book-cta { justify-content: center; }
}

/* Testimonials */
.testimonial {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.testimonial-text {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent) 0%, #0e7490 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: white;
}

.testimonial-info {
  display: flex;
  flex-direction: column;
}

.testimonial-info strong {
  color: var(--color-text);
  font-size: 0.95rem;
}

.testimonial-info span {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* Credentials */
.credentials {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.credential {
  background: var(--color-primary-lighter);
  border: 1px solid var(--color-border);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* Footer */
.footer {
  background: var(--color-primary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.footer-logo {
  height: 40px;
  margin-bottom: var(--space-md);
}

.footer-desc {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.footer-heading {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
}

.footer-links li { margin-bottom: var(--space-sm); }

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  color: var(--color-text-secondary);
  font-weight: 600;
}

/* Forms */
.form-group { margin-bottom: var(--space-lg); }

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: var(--color-primary-lighter);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* Chapter Cards */
.chapter-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: var(--transition);
}

.chapter-card:hover {
  border-color: var(--color-accent);
  transform: translateX(4px);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }
}