/* ========================
   CSS RESET & BASE STYLES
   ======================== */

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

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

body {
  font-family: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ========================
   CSS VARIABLES - BRAND
   ======================== */

:root {
  /* Brand Colors */
  --primary: #0B3C5D;
  /* Deep Trust Blue */
  --secondary: #0F5C6E;
  /* Deep Teal */
  --accent: #E6B566;
  /* Soft Gold */
  --bg-primary: #FFFFFF;
  /* White */
  --bg-secondary: #F5F7FA;
  /* Light Grey */
  --text-primary: #2B2B2B;
  /* Charcoal */
  --text-secondary: #5A5A5A;
  /* Medium Grey */
  --text-light: #FFFFFF;

  /* Semantic Colors */
  --success: #0F5C6E;
  --warning: #E6B566;
  --info: #0B3C5D;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-xxl: 8rem;

  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', 'Roboto', sans-serif;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(11, 60, 93, 0.08);
  --shadow-md: 0 4px 16px rgba(11, 60, 93, 0.12);
  --shadow-lg: 0 8px 32px rgba(11, 60, 93, 0.16);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Container */
  --container-max: 1200px;
  --container-padding: 2rem;
}

/* ========================
   SCROLL PROGRESS BAR
   ======================== */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
  z-index: 9999;
  transition: width 0.1s ease;
}

/* ========================
   SCROLL TO TOP BUTTON
   ======================== */

.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--text-light);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 999;
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(11, 60, 93, 0.25);
}

.scroll-to-top:active {
  transform: translateY(-2px);
}

/* ========================
   TYPOGRAPHY
   ======================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
  max-width: 75ch;
}

.text-large {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  line-height: 1.6;
}

.text-small {
  font-size: 0.875rem;
  line-height: 1.5;
}

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}

.section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  opacity: 0.3;
}

.section-alt {
  background-color: var(--bg-secondary);
}

.grid {
  display: grid;
  gap: var(--spacing-md);
}

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

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

.flex {
  display: flex;
  gap: var(--spacing-md);
}

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

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

.text-center {
  text-align: center;
}

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

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
}

.btn:focus {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.btn:focus:not(:focus-visible) {
  outline: none;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-light);
  border-color: var(--primary);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary:hover {
  background-color: #0a2f47;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Pulse animation for primary CTAs */
@keyframes pulse {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(11, 60, 93, 0.4);
  }

  50% {
    box-shadow: 0 0 0 10px rgba(11, 60, 93, 0);
  }
}

.btn-primary.pulse {
  animation: pulse 2s infinite;
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--text-light);
  border-color: var(--secondary);
}

.btn-secondary:hover {
  background-color: #0A3F4B;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
}

.btn-group {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* ========================
   CARDS
   ======================== */

.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid rgba(11, 60, 93, 0.08);
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 40px rgba(11, 60, 93, 0.15);
}

.card-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
  font-size: 2rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.card-description {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-normal);
  padding: 0.5rem 0;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
  padding: 0.25rem 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  transition: color var(--transition-fast);
  font-size: 0.95rem;
}

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

.nav-links .btn {
  color: var(--text-light) !important;
  padding: 0.75rem 1.5rem;
}

.nav-links .btn:hover {
  color: var(--text-light) !important;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary);
}

/* ========================
   HERO SECTION
   ======================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background: linear-gradient(135deg, #F5F7FA 0%, #FFFFFF 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(11, 60, 93, 0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.hero-text h1 {
  margin-bottom: var(--spacing-sm);
  color: var(--primary);
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.hero-image {
  position: relative;
  z-index: 1;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* ========================
   SECTION HEADERS
   ======================== */

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--text-light);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.section-title {
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* ========================
   WORKFLOW / STEPS
   ======================== */

.workflow {
  position: relative;
  padding: var(--spacing-md) 0;
}

.workflow-step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.workflow-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 40px;
  top: 80px;
  bottom: -60px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  opacity: 0.3;
}

.step-number {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-light);
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
}

.step-content h3 {
  margin-bottom: var(--spacing-xs);
}

.step-content p {
  margin: 0;
}

/* ========================
   COMPARISON TABLE
   ======================== */

.comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.comparison-item {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  border: 2px solid transparent;
  transition: all var(--transition-normal);
}

.comparison-item.highlight {
  border-color: var(--secondary);
  box-shadow: var(--shadow-md);
}

.comparison-item h4 {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.comparison-item ul {
  list-style: none;
  padding: 0;
}

.comparison-item li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
}

.comparison-item li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-weight: bold;
}

.comparison-item.highlight li::before {
  content: '★';
  color: var(--accent);
}

/* ========================
   ECOSYSTEM DIAGRAM
   ======================== */

.ecosystem {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
}

.ecosystem-tier {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
}

.ecosystem-node {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  min-width: 200px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--primary);
  position: relative;
}

.ecosystem-node.silver {
  border-color: #C0C0C0;
}

.ecosystem-node.gold {
  border-color: var(--accent);
}

.ecosystem-node h4 {
  color: var(--primary);
  margin-bottom: var(--spacing-xs);
}

/* ========================
   FOUNDER CARDS
   ======================== */

.founders {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.founder-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.founder-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.founder-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  margin: 0 auto var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--text-light);
  font-weight: 600;
}

.founder-name {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.founder-role {
  color: var(--secondary);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.founder-bio {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ========================
   STATS / METRICS
   ======================== */

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

.stat-card {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ========================
   CTA SECTION
   ======================== */

.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--text-light);
  text-align: center;
  padding: var(--spacing-xxl) var(--container-padding);
  border-radius: var(--radius-xl);
  margin: var(--spacing-lg) auto;
  max-width: var(--container-max);
}

.cta-section h2 {
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.cta-section p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.cta-section .btn {
  background: var(--text-light);
  color: var(--primary);
  border-color: var(--text-light);
}

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

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

.footer {
  background: var(--primary);
  color: var(--text-light);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
  color: var(--text-light);
  margin-bottom: var(--spacing-sm);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1.8;
}

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

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
}

.footer-bottom p {
  margin: 0 auto;
  max-width: none;
}

/* ========================
   ANIMATIONS
   ======================== */

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

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

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

@media (max-width: 968px) {
  :root {
    --container-padding: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 5rem;
  }

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

  .hero-image {
    order: -1;
  }

  .btn-group {
    justify-content: center;
  }

  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-normal);
    pointer-events: none;
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-toggle {
    display: block;
  }

  .workflow-step {
    grid-template-columns: 60px 1fr;
  }

  .step-number {
    width: 60px;
    height: 60px;
    font-size: 1.5rem;
  }

  .workflow-step:not(:last-child)::after {
    left: 30px;
    top: 60px;
  }
}

@media (max-width: 640px) {
  :root {
    --container-padding: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
  }

  .btn {
    width: 100%;
  }

  .btn-group {
    flex-direction: column;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ========================
   UTILITY CLASSES
   ======================== */

.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-0 {
  margin-top: 0;
}

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

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

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

.text-primary {
  color: var(--primary);
}

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

.text-accent {
  color: var(--accent);
}

.bg-primary {
  background-color: var(--bg-primary);
}

.bg-secondary {
  background-color: var(--bg-secondary);
}

.fw-normal {
  font-weight: 400;
}

.fw-medium {
  font-weight: 500;
}

.fw-semibold {
  font-weight: 600;
}

.fw-bold {
  font-weight: 700;
}