/* Modern QR Code Generator Styles */
:root {
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --success-color: #10b981;
  --dark-color: #1f2937;
  --light-color: #f8fafc;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --border-radius: 12px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --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);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--gray-800);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
}

.nav {
  display: flex;
  gap: 1rem;
  align-items: center;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
  background: var(--gray-200);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-1px);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
}

.btn-success {
  background: linear-gradient(135deg, var(--success-color), #059669);
  color: white;
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning-color), #d97706);
  color: white;
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-color), #dc2626);
  color: white;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 0 6rem;
  color: white;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff, #e2e8f0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Main Content */
.main-content {
  background: white;
  border-radius: 24px 24px 0 0;
  margin-top: -2rem;
  position: relative;
  z-index: 10;
  padding: 3rem 0;
  min-height: 60vh;
}

/* Section Styles */
.section {
  padding: 4rem 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--gray-900);
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  color: var(--gray-600);
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.feature-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

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

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--gray-900);
}

.feature-card p {
  color: var(--gray-600);
  line-height: 1.6;
}

/* Pricing Cards */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.plan-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
  transition: all 0.3s ease;
  position: relative;
  display: flex;
  flex-direction: column;
}

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

.plan-card.featured {
  border: 2px solid var(--primary-color);
  transform: scale(1.05);
}

.plan-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.plan-header {
  text-align: center;
  margin-bottom: 2rem;
}

.plan-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.plan-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.plan-period {
  color: var(--gray-500);
  font-size: 0.875rem;
}

.plan-features {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.plan-features li {
  padding: 0.75rem 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--gray-100);
}

.plan-features li:last-child {
  border-bottom: none;
}

.plan-features .check {
  color: var(--success-color);
  font-weight: 600;
}

.plan-features .cross {
  color: var(--gray-400);
}

/* Cards and Components */
.card {
  background: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.result-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  margin: 2rem auto;
  max-width: 600px;
  text-align: center;
  border: 1px solid var(--gray-200);
}

.qr-container {
  margin: 2rem 0;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: var(--border-radius);
  border: 2px dashed var(--gray-300);
}

.qr-container img {
  max-width: 250px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.url-display {
  background: var(--gray-50);
  padding: 1rem;
  border-radius: var(--border-radius);
  margin: 1rem 0;
  word-break: break-all;
  font-family: 'Monaco', 'Menlo', monospace;
  font-size: 0.875rem;
  border: 1px solid var(--gray-200);
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  text-align: center;
  padding: 3rem 0;
  margin-top: 4rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .features-grid,
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .plan-card.featured {
    transform: none;
  }
  
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  /* Mobile QR Code Cards */
  .card {
    padding: 1.5rem;
    margin-bottom: 1rem;
  }
  
  /* QR Code Grid Mobile Optimization */
  [style*="grid-template-columns: repeat(auto-fill, minmax(320px, 1fr))"] {
    grid-template-columns: 1fr !important;
    gap: 1rem !important;
  }
  
  /* QR Code Card Mobile Layout */
  .qr-card-mobile {
    padding: 1rem !important;
  }
  
  /* Mobile Analytics Stats Grid */
  [style*="grid-template-columns: repeat(auto-fit, minmax(200px, 1fr))"] {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1rem !important;
  }
  
  /* Mobile Button Groups */
  [style*="display: flex; gap: 0.5rem"] {
    flex-direction: column !important;
    gap: 0.75rem !important;
  }
  
  [style*="display: flex; gap: 1rem; flex-wrap: wrap"] {
    flex-direction: column !important;
    gap: 1rem !important;
  }
  
  /* Mobile QR Code Display */
  .qr-container img {
    max-width: 200px;
  }
  
  /* Mobile Analytics Cards */
  [style*="max-width: 1000px"] {
    max-width: 100% !important;
    padding: 0 !important;
  }
  
  /* Mobile Scan Counter */
  [style*="text-align: right"] {
    text-align: center !important;
    margin-top: 0.5rem;
  }
  
  /* Mobile QR Code Info Layout */
  [style*="display: flex; align-items: center; gap: 0.75rem"] {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.5rem !important;
  }
  
  /* Mobile Typography Adjustments */
  .section-title {
    font-size: 2rem;
  }
  
  .section-subtitle {
    font-size: 1rem;
  }
  
  /* Mobile Form Improvements */
  input[type="url"], 
  input[type="file"],
  button[type="submit"] {
    font-size: 16px !important; /* Prevents zoom on iOS */
  }
  
  /* Mobile Navigation */
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }
  
  .btn-large {
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
  }
}

/* Tablet Responsive Design */
@media (max-width: 1024px) and (min-width: 769px) {
  /* QR Code Grid for Tablets */
  [style*="grid-template-columns: repeat(auto-fill, minmax(320px, 1fr))"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  
  /* Analytics Grid for Tablets */
  [style*="grid-template-columns: repeat(auto-fit, minmax(200px, 1fr))"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

/* Small Mobile Devices */
@media (max-width: 480px) {
  .container {
    padding: 0 10px;
  }
  
  .card {
    padding: 1rem;
  }
  
  .hero {
    padding: 2rem 0 4rem;
  }
  
  .hero h1 {
    font-size: 2rem;
    line-height: 1.1;
  }
  
  .main-content {
    padding: 2rem 0;
  }
  
  /* Force single column on very small screens */
  [style*="grid-template-columns: repeat(2, 1fr)"] {
    grid-template-columns: 1fr !important;
  }
  
  /* Smaller QR codes on tiny screens */
  .qr-container img {
    max-width: 180px;
  }
  
  /* Compact analytics stats */
  [style*="padding: 1.5rem"] {
    padding: 1rem !important;
  }
  
  [style*="font-size: 2rem"] {
    font-size: 1.5rem !important;
  }
  
  /* Mobile-friendly buttons */
  .btn {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    min-height: 44px; /* Touch target size */
  }
  
  /* Improve touch targets */
  a, button {
    min-height: 44px;
    min-width: 44px;
  }
}

/* Landscape Mobile Optimization */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    padding: 1.5rem 0 3rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .main-content {
    margin-top: -1rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* Loading States */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }
.mt-6 { margin-top: 1.5rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }
.mb-6 { margin-bottom: 1.5rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.w-full { width: 100%; }
.h-full { height: 100%; }

.rounded { border-radius: var(--border-radius); }
.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }