/* Modern landing page - InQuiziTriv */
/* Sleek, clean, and focused design with strong hierarchy */

:root {
  /* Color System - WCAG AA compliant */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: rgba(37, 99, 235, 0.1);
  --color-success: #10b981;
  --color-danger: #ef4444;
  
  /* Neutral Colors */
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-elevated: #334155;
  --color-border: #475569;
  
  /* Text Colors */
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  
  /* 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;
  
  /* Typography */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Space Grotesk", var(--font-sans);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

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

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  border-radius: 0 0 var(--spacing-xs) 0;
  font-weight: 600;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;
}

/* Container */
.landing-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Navigation */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

.nav-logo-icon {
  font-size: 1.75rem;
  color: var(--color-primary);
}

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

.nav-link {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  border-radius: var(--spacing-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background: var(--color-surface);
}

.nav-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.nav-cta {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-primary);
  color: white;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--spacing-sm);
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.nav-cta:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% -20%, var(--color-primary-light), transparent);
  pointer-events: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text {
  max-width: 600px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-primary-light);
  border: 1px solid var(--color-primary);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.hero-title-accent {
  background: linear-gradient(135deg, var(--color-primary), #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
}

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

.cta-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-primary);
  color: white;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
  border-radius: var(--spacing-sm);
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}

.cta-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.cta-primary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: transparent;
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
  border-radius: var(--spacing-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.cta-secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-text-tertiary);
}

.cta-secondary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--spacing-lg);
  padding: var(--spacing-xl);
  max-width: 400px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
  transition: transform var(--transition-base);
}

.hero-visual-card:hover {
  transform: perspective(1000px) rotateY(0) rotateX(0);
}

.visual-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.visual-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

.visual-title {
  font-weight: 600;
  color: var(--color-text-primary);
}

.visual-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
}

.visual-question {
  margin-bottom: var(--spacing-lg);
}

.visual-question-text {
  font-weight: 500;
  margin-bottom: var(--spacing-md);
}

.visual-options {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.visual-option {
  padding: var(--spacing-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--spacing-sm);
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  cursor: default;
}

.visual-option.selected {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Value Section */
.value-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.value-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.value-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.value-description {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* How It Works Section */
.how-section {
  padding: var(--spacing-3xl) 0;
}

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

.how-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text-primary);
}

.how-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.how-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--spacing-lg);
  transition: all var(--transition-base);
}

.how-step:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.step-number {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: 50%;
  margin-bottom: var(--spacing-lg);
}

.step-icon {
  font-size: 2rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.step-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.step-description {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* Who It's For Section */
.audience-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.audience-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text-primary);
}

.audience-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.audience-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--spacing-lg);
  transition: all var(--transition-base);
}

.audience-card:hover {
  border-color: var(--color-primary);
}

.audience-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: 50%;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
  font-size: 1.75rem;
}

.audience-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.audience-card-description {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

/* Final CTA Section */
.final-cta-section {
  padding: var(--spacing-3xl) 0;
}

.final-cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.final-cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.final-cta-description {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
}

/* Footer */
.landing-footer {
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

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

.footer-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

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

.footer-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.footer-copyright {
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 992px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }
  
  .hero-text {
    max-width: 100%;
  }
  
  .hero-subtitle {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-cta-group {
    justify-content: center;
  }
  
  .hero-visual-card {
    transform: none;
  }
  
  .how-steps {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .audience-cards {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 768px) {
  .landing-container {
    padding: 0 var(--spacing-md);
  }
  
  .nav-links {
    display: none;
  }
  
  .hero-section {
    min-height: auto;
    padding-top: calc(72px + var(--spacing-2xl));
    padding-bottom: var(--spacing-2xl);
  }
  
  .hero-visual {
    display: none;
  }
  
  .hero-cta-group {
    flex-direction: column;
  }
  
  .cta-primary,
  .cta-secondary {
    width: 100%;
    justify-content: center;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  
  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

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

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Auth Links Hidden - Remove this class when authentication is ready */
.auth-link-hidden {
  display: none;
}