/* ==========================================================================
   Listn Landing Page - Cosmic Theme
   ========================================================================== */

/* CSS Custom Properties - Exact match to app theme */
:root {
  /* Colors */
  --color-bg-primary: #0f0f23;
  --color-bg-secondary: #1a1a2e;
  --color-bg-elevated: #16213e;
  --color-text-primary: #d5dbdb;
  --color-text-secondary: #85929e;
  --color-text-tertiary: #5d6d7e;
  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-dark: #4f46e5;
  --color-border: #16213e;
  --color-border-light: rgba(99, 102, 241, 0.2);
  
  /* Special colors */
  --color-cosmic-blue: #4A90E2;
  --color-cosmic-indigo: #7B68EE;
  --color-cosmic-violet: #9370DB;
  --color-aurora-pink: #fa709a;
  --color-aurora-yellow: #fee140;
  --color-crystal-blue: #4facfe;
  --color-aqua-glow: #00f2fe;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-size-5xl: 48px;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Shadows */
  --shadow-card: 0 6px 14px rgba(99, 102, 241, 0.06);
  --shadow-hover: 0 12px 28px rgba(99, 102, 241, 0.12);
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

/* ==========================================================================
   Starfield Background
   ========================================================================== */

.starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.star {
  position: absolute;
  background: var(--color-accent);
  border-radius: 50%;
  animation: twinkle var(--duration, 3s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes twinkle {
  0%, 100% { opacity: var(--opacity, 0.5); transform: scale(1); }
  50% { opacity: calc(var(--opacity, 0.5) * 0.3); transform: scale(0.8); }
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 15, 35, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  transition: all var(--transition-base);
}

.nav.scrolled {
  background: rgba(15, 15, 35, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: var(--font-size-lg);
  transition: opacity var(--transition-fast);
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-crystal-blue), var(--color-aqua-glow));
  transition: width var(--transition-base);
  border-radius: var(--radius-full);
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Mobile Navigation */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(15, 15, 35, 0.98);
    padding: var(--space-lg);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  
  .nav-link {
    font-size: var(--font-size-base);
    padding: var(--space-sm) 0;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-4xl) var(--space-lg);
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.hero-logo {
  margin-bottom: var(--space-xl);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-crystal-blue), var(--color-aqua-glow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  font-weight: 300;
}

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

.hero-badges {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--space-3xl);
}

.store-badge {
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  opacity: 0.9;
}

.store-badge:hover {
  transform: scale(1.05);
  opacity: 1;
}

.scroll-indicator {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 1px solid var(--color-border-light);
  border-radius: 50%;
  color: var(--color-text-secondary);
  animation: bounce 2s ease-in-out infinite;
  transition: all var(--transition-fast);
}

.scroll-indicator:hover {
  color: var(--color-accent-light);
  border-color: var(--color-accent);
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ==========================================================================
   Sections
   ========================================================================== */

.section {
  position: relative;
  z-index: 1;
  padding: var(--space-4xl) var(--space-lg);
}

.section-alt {
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.container {
  max-width: 1000px;
  margin: 0 auto;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  text-align: center;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3xl);
}

/* ==========================================================================
   Steps (How It Works)
   ========================================================================== */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.step {
  text-align: center;
  padding: var(--space-xl);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.step:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-hover);
}

.step-icon {
  margin-bottom: var(--space-lg);
}

.step-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.step-description {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.cards {
  display: grid;
  gap: var(--space-lg);
}

.card {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-card);
}

.card:hover {
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-hover);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

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

.card p:last-child {
  margin-bottom: 0;
}

.card ul, .card ol {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
  line-height: 1.8;
}

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

.card-warning {
  border-color: rgba(245, 158, 11, 0.3);
  background: linear-gradient(135deg, var(--color-bg-secondary), rgba(245, 158, 11, 0.05));
}

.card-highlight {
  border-color: rgba(99, 102, 241, 0.3);
  background: linear-gradient(135deg, var(--color-bg-secondary), rgba(99, 102, 241, 0.08));
}

/* ==========================================================================
   FAQ
   ========================================================================== */

.faq-item {
  margin-bottom: var(--space-lg);
}

.faq-item:last-child {
  margin-bottom: 0;
}

.faq-item strong {
  color: var(--color-text-primary);
  display: block;
  margin-bottom: var(--space-xs);
}

.faq-item p {
  margin-bottom: 0;
}

/* ==========================================================================
   Crisis Resources
   ========================================================================== */

.crisis-list {
  list-style: none;
  padding-left: 0;
}

.crisis-list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.crisis-list li:last-child {
  border-bottom: none;
}

.crisis-note {
  font-weight: 500;
  color: var(--color-text-primary);
  text-align: center;
  margin-top: var(--space-lg);
}

/* ==========================================================================
   Legal Content
   ========================================================================== */

.legal-content {
  display: grid;
  gap: var(--space-lg);
}

address {
  font-style: normal;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

/* ==========================================================================
   Links
   ========================================================================== */

.link {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color var(--transition-fast);
  border-bottom: 1px solid transparent;
}

.link:hover {
  color: var(--color-crystal-blue);
  border-bottom-color: var(--color-crystal-blue);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  position: relative;
  z-index: 1;
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) var(--space-lg);
}

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

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.footer-tagline {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

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

/* ==========================================================================
   Animations
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger animation for cards */
.cards .fade-in:nth-child(1) { transition-delay: 0s; }
.cards .fade-in:nth-child(2) { transition-delay: 0.1s; }
.cards .fade-in:nth-child(3) { transition-delay: 0.2s; }
.cards .fade-in:nth-child(4) { transition-delay: 0.3s; }

.steps .fade-in:nth-child(1) { transition-delay: 0s; }
.steps .fade-in:nth-child(2) { transition-delay: 0.15s; }
.steps .fade-in:nth-child(3) { transition-delay: 0.3s; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
  :root {
    --space-4xl: 64px;
    --space-3xl: 48px;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-badges {
    flex-direction: column;
    align-items: center;
  }
  
  .footer-links {
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .card {
    padding: var(--space-lg);
  }
  
  .step {
    padding: var(--space-lg);
  }
}

/* ==========================================================================
   Selection
   ========================================================================== */

::selection {
  background: var(--color-accent);
  color: white;
}

/* ==========================================================================
   Scrollbar
   ========================================================================== */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}