/* 
  Premium B2B SaaS Design - CoverScore AI
  Following UI/UX Pro Max Guidelines
*/

:root {
  /* Semantic Color Tokens */
  --color-primary: #10b981; /* Emerald 500 */
  --color-primary-hover: #059669; /* Emerald 600 */
  --color-primary-light: #d1fae5; /* Emerald 100 */
  
  --color-surface-dark: #061125; /* Original Dark Navy */
  --color-surface-darker: #040b1a; /* Darker Navy */
  --color-surface-light: #ffffff; /* White */
  --color-surface-muted: #f8fafc; /* Slate 50 */
  
  --text-main: #0f172a; /* Slate 900 */
  --text-muted: #64748b; /* Slate 500 */
  --text-inverse: #f8fafc; /* Slate 50 */
  --text-inverse-muted: #94a3b8; /* Slate 400 */
  
  --border-light: #e2e8f0; /* Slate 200 */
  --border-dark: #334155; /* Slate 700 */

  /* Legacy Variables for Original Mockup */
  --mo-navy-dark: var(--color-surface-dark);
  --mo-navy-light: #0d1f3f;
  --mo-navy-lighter: #162f5c;
  --mo-green: var(--color-primary);
  --mo-green-hover: var(--color-primary-hover);
  --mo-green-light: var(--color-primary-light);
  --mo-white: var(--color-surface-light);
  --mo-gray-bg: var(--color-surface-muted);
  --mo-text-dark: var(--text-main);
  --mo-text-muted: var(--text-muted);
  --mo-text-light: var(--text-inverse);
  --mo-text-light-muted: var(--text-inverse-muted);
  --mo-border: var(--border-light);
  --mo-border-navy: var(--border-dark);

  /* Typography Scale */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --text-xs: 0.75rem; /* 12px */
  --text-sm: 0.875rem; /* 14px */
  --text-base: 1rem; /* 16px */
  --text-lg: 1.125rem; /* 18px */
  --text-xl: 1.25rem; /* 20px */
  --text-2xl: 1.5rem; /* 24px */
  --text-3xl: 1.875rem; /* 30px */
  --text-4xl: 2.25rem; /* 36px */
  --text-5xl: 3rem; /* 48px */
  
  /* Elevation / Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset & Typography */
* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background-color: var(--color-surface-light);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  font-size: var(--text-base);
}

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

ul { list-style: none; padding: 0; margin: 0; }

h1, h2, h3, h4 { 
  margin: 0; 
  font-weight: 700; 
  line-height: 1.2; 
  letter-spacing: -0.02em; 
}
p { margin: 0; }

.mo-kicker {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1); /* 10% primary */
  padding: 6px 16px;
  border-radius: var(--radius-full);
}

/* Layout Primitives */
.mo-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.mo-section { padding: 96px 0; }
.mo-section-light { background: var(--color-surface-light); }
.mo-section-gray { background: var(--color-surface-muted); }
.mo-section-navy { 
  background: var(--color-surface-dark); 
  color: var(--text-inverse); 
}

/* Buttons (Touch optimized, Minimum 44px height) */
.mo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  height: 48px; /* Touch target optimized */
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  gap: 8px;
}

/* Focus rings for Accessibility */
.mo-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.mo-btn:active {
  transform: scale(0.98);
}

.mo-btn-navy {
  background: var(--color-surface-dark);
  color: var(--color-surface-light);
}

.mo-btn-navy:hover { background: var(--color-surface-darker); box-shadow: var(--shadow-md); }

.mo-btn-green {
  background: var(--color-primary);
  color: var(--color-surface-light);
}

.mo-btn-green:hover { background: var(--color-primary-hover); box-shadow: var(--shadow-md); }

.mo-btn-outline {
  background: transparent;
  border: 1px solid var(--border-dark);
  color: var(--text-inverse);
}

.mo-btn-outline:hover { background: rgba(255,255,255,0.05); }

/* Glassmorphism Navbar */
.mo-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.mo-nav.nav-dark {
  background: rgba(6, 17, 37, 0.85); /* Original Dark Navy */
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mo-logo {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: -0.03em;
}

.nav-dark .mo-logo { color: var(--color-surface-light); }

.mo-logo-ai {
  background: var(--color-primary);
  color: white;
  font-size: var(--text-xs);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.mo-nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.mo-nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: var(--text-sm);
}

.nav-dark .mo-nav-links a { color: var(--text-inverse-muted); }
.mo-nav-links a:hover { color: var(--color-primary); }

.mo-hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 8px;
  min-height: 44px;
  min-width: 44px;
}
.nav-dark .mo-hamburger { color: var(--color-surface-light); }

.mo-mobile-only-btn { display: none; }

/* Hero Section */
.mo-hero {
  padding: 80px 0 120px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.mo-hero-title {
  font-size: var(--text-5xl);
  margin-bottom: 24px;
  color: var(--text-inverse);
  line-height: 1.1;
}

.mo-hero-title span { color: var(--color-primary); }

.mo-hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-inverse-muted);
  margin-bottom: 40px;
  max-width: 500px;
  line-height: 1.7;
}

.mo-check-list { margin-bottom: 48px; }

.mo-check-item {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  color: var(--text-inverse);
  font-weight: 500;
  font-size: var(--text-base);
}

.mo-check-icon {
  color: var(--color-primary);
  background: rgba(16, 185, 129, 0.1);
  border-radius: 50%;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  min-height: 24px;
}

.mo-hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
}

.mo-hero-trust {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mo-avatars { display: flex; }
.mo-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  border: 2px solid var(--color-surface-dark);
  margin-left: -12px; background: var(--border-dark);
  box-shadow: var(--shadow-sm);
}
.mo-avatar:first-child { margin-left: 0; }

/* Dashboard Mockup - Premium UI/UX */
.mo-mockup-card {
  background: var(--color-surface-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
  color: var(--text-main);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(0,0,0,0.05);
  position: relative;
  overflow: hidden;
}

.mo-mockup-sidebar {
  background: var(--color-surface-dark);
  border-radius: var(--radius-md);
  padding: 24px 16px;
  color: var(--color-surface-light);
  border: none;
}

.mo-mockup-sidebar-title {
  font-weight: 800; 
  margin-bottom: 32px; 
  display: flex; 
  align-items: center; 
  gap: 8px;
  color: var(--text-main);
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
}

.mo-mockup-sidebar ul {
  display: flex; flex-direction: column; gap: 8px;
}

.mo-mockup-sidebar li {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
}

.mo-mockup-sidebar li.active {
  background: var(--color-surface-light);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.mo-mockup-main {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.mo-mockup-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.mo-mockup-box {
  background: var(--color-surface-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.mo-mockup-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mo-mockup-value {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.mo-mockup-value.success { color: var(--color-primary); }
.mo-mockup-value.warning { color: #f59e0b; }
.mo-mockup-value.danger { color: #ef4444; }

/* Grid Sections */
.mo-card-content {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  margin-bottom: 48px;
  flex-grow: 1;
}

.mo-sample-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: center;
}

.mo-sample-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 32px;
}

.mo-sample-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* How It Works */
.mo-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
  margin-top: 64px;
  position: relative;
}

.mo-step-icon {
  width: 80px;
  height: 80px;
  background: var(--color-primary-light);
  color: var(--color-primary-hover);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 32px;
  transform: rotate(-3deg);
  transition: transform var(--transition-normal);
}

.mo-step-icon:hover {
  transform: rotate(0deg) scale(1.05);
}

/* Assessment Cards */
.mo-assessment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
}

.mo-card {
  background: var(--color-surface-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.mo-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Features/Learnings */
.mo-learn-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  text-align: center;
  margin-top: 64px;
}

.mo-learn-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md);
  background: var(--color-surface-light);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  color: var(--text-main);
  font-size: 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.mo-learn-icon:hover { box-shadow: var(--shadow-md); }

/* Testimonials */
.mo-test-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 64px;
}

.mo-test-card {
  background: var(--color-surface-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Footer */
.mo-footer {
  padding: 80px 0 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  border-top: 1px solid var(--border-dark);
}

.mo-footer-col h4 {
  color: var(--text-inverse);
  margin-bottom: 24px;
  font-size: var(--text-base);
}

.mo-footer-col a {
  display: block;
  color: var(--text-inverse-muted);
  margin-bottom: 12px;
  font-size: var(--text-sm);
}

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

/* Responsive */
@media (max-width: 1024px) {
  .mo-hero { grid-template-columns: 1fr; text-align: center; padding-bottom: 80px; }
  .mo-hero-title { font-size: var(--text-4xl); }
  .mo-hero-subtitle { margin: 0 auto 40px; }
  .mo-hero-actions { justify-content: center; }
  .mo-check-list { display: flex; flex-direction: column; align-items: center; }
  .mo-hero-trust { justify-content: center; }
  
  .mo-steps { grid-template-columns: 1fr 1fr; gap: 48px; }
  .mo-assessment-grid { grid-template-columns: 1fr; }
  .mo-learn-grid { grid-template-columns: 1fr 1fr 1fr; }
  
  .mo-sample-grid { grid-template-columns: 1fr; }
  
  /* Make mockup card full width on tablet */
  .mo-mockup-card { display: grid !important; margin: 0 auto; width: 100%; max-width: 800px; }
}

@media (max-width: 768px) {
  .mo-mockup-sidebar { display: none; }
  .mo-mockup-card { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .mo-hamburger { display: block; }
  .mo-desktop-only-btn { display: none; }
  .mo-mobile-only-btn { display: inline-flex; width: 100%; justify-content: center; margin-top: 24px; }
  
  .mo-nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--color-surface-light);
    padding: 32px 24px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
  }
  .mo-nav-links.active {
    display: flex;
  }
  
  .mo-hero-title { font-size: var(--text-3xl); }
  .mo-steps { grid-template-columns: 1fr; }
  .mo-learn-grid { grid-template-columns: 1fr; }
  .mo-test-grid { grid-template-columns: 1fr; }
  .mo-footer { grid-template-columns: 1fr 1fr; gap: 32px; }
  .mo-footer-brand { grid-column: span 2; text-align: center; margin-bottom: 24px; }
  .mo-footer-brand .mo-logo { justify-content: center; }
  .mo-hero-actions { flex-direction: column; width: 100%; }
  .mo-hero-actions .mo-btn { width: 100%; }
  
  .mo-card-content { flex-direction: column; align-items: center; text-align: center; }
  .mo-sample-grid { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .mo-sample-stats { grid-template-columns: 1fr; text-align: center; gap: 24px; }
  .mo-sample-details { grid-template-columns: 1fr; text-align: center; gap: 32px; }
  
  .mo-mockup-row { grid-template-columns: 1fr; }
}