/* ================================================
   Range PRO - Main Stylesheet
   Modern Dark Theme with Webflow-style Design
   ================================================ */

/* CSS Variables */
:root {
  /* Colors - Dark Theme */
  --color-bg-primary: #000000;
  --color-bg-secondary: #0A0A0A;
  --color-bg-tertiary: #1a1a1a;
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-tertiary: #666666;
  
  /* Accent Colors - Blue Palette */
  --color-primary: #0070F3;
  --color-secondary: #00A8E8;
  --color-tertiary: #003E7E;
  --color-gradient: linear-gradient(135deg, #0070F3 0%, #00A8E8 100%);
  
  /* Status Colors */
  --color-success: #34C759;
  --color-warning: #FFCC00;
  --color-error: #FF3B30;
  
  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 48px;
  --space-xl: 96px;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 14px;
  --font-size-sm: 16px;
  --font-size-md: 18px;
  --font-size-lg: 24px;
  --font-size-xl: 36px;
  --font-size-hero: 48px;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.5);
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-tooltip: 1050;
}

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

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ================================================
   Typography
   ================================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--font-size-hero); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }
h4 { font-size: var(--font-size-md); }
h5 { font-size: var(--font-size-sm); }
h6 { font-size: var(--font-size-xs); }

p {
  margin-bottom: var(--space-md);
}

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

a:hover {
  color: var(--color-secondary);
}

/* ================================================
   Layout
   ================================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-reading {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-xl) 0;
}

.section-sm {
  padding: var(--space-lg) 0;
}

.section-lg {
  padding: calc(var(--space-xl) * 1.5) 0;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Flexbox Utilities */
.flex {
  display: flex;
}

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

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

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

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
  padding: var(--space-md) 0;
}

.nav.scrolled {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-md);
}

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

.nav-logo {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

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

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

.nav-cta {
  margin-left: var(--space-md);
}

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

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

/* ================================================
   Buttons
   ================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 16px 32px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-gradient);
  color: var(--color-text-primary);
  box-shadow: 0 4px 16px rgba(0, 112, 243, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 112, 243, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-text-primary);
  transform: scale(1.02);
}

.btn-sm {
  padding: 12px 24px;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 20px 40px;
  font-size: var(--font-size-md);
}

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

.card {
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 112, 243, 0.3);
}

.card-glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 32px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-normal);
}

.card-glass:hover {
  background: rgba(255, 255, 255, 0.08);
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: 80px;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #001F3F 0%, #003F7F 100%);
  z-index: 0;
}

.hero-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.8) 100%);
  z-index: 1;
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-content {
  text-align: left;
}

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

.hero-mockup {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  transition: transform var(--transition-normal);
}

.hero-mockup:hover {
  transform: translateY(-8px) scale(1.02);
}

.hero-title {
  font-size: clamp(40px, 8vw, 72px);
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, #ffffff 0%, #00A8E8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(18px, 3vw, 24px);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  line-height: var(--line-height-relaxed);
}

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

.hero-features {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.hero-features li {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.hero-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
}

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

.feature-card {
  text-align: center;
  padding: 40px 24px;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  background: var(--color-gradient);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

.feature-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.feature-description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ================================================
   Pricing
   ================================================ */

.pricing-card {
  text-align: center;
  max-width: 400px;
  margin: 0 auto;
}

.pricing-badge {
  display: inline-block;
  padding: 8px 16px;
  background: var(--color-success);
  color: var(--color-bg-primary);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.pricing-amount {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.pricing-period {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--space-lg);
  text-align: left;
}

.pricing-features li {
  padding: var(--space-sm) 0;
  display: flex;
  align-items: start;
  gap: var(--space-sm);
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

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

.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-xl) 0 var(--space-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-column h4 {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-md);
}

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

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

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

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

.footer-bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
}

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

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

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

/* ================================================
   QR Code with Center Icon
   ================================================ */

.qr-code-container {
  position: relative;
  display: inline-block;
}

/* QR center icon styling removed - now embedded directly in canvas */

/* Ensure QR code is properly sized */
#qrCanvas canvas {
  max-width: 100%;
  height: auto;
}

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

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --font-size-hero: 36px;
    --font-size-xl: 28px;
    --font-size-lg: 20px;
    --space-xl: 64px;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 80%;
    max-width: 400px;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 32px 32px;
    gap: var(--space-md);
    transition: right var(--transition-normal);
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .hero-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    text-align: center;
  }
  
  .hero-content {
    text-align: center;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 300px;
  }
  
  .hero-mockup {
    max-width: 80%;
  }
}

@media (max-width: 480px) {
  :root {
    --space-lg: 32px;
    --space-xl: 48px;
  }
  
  .card,
  .card-glass {
    padding: var(--space-md);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* ================================================
   Accessibility
   ================================================ */

@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;
  }
}

/* Focus Styles */
*:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* ================================================
   Utility Classes
   ================================================ */

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

.text-gradient {
  background: var(--color-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.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); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }