:root {
  /* Color System */
  --primary-50: #fff7ed;
  --primary-100: #ffedd5;
  --primary-200: #fed7aa;
  --primary-300: #fdba74;
  --primary-400: #fb923c;
  --primary-500: #f97316;
  --primary-600: #ea580c;
  --primary-700: #c2410c;
  --primary-800: #9a3412;
  --primary-900: #7c2d12;

  --secondary-50: #f0f9ff;
  --secondary-100: #e0f2fe;
  --secondary-200: #bae6fd;
  --secondary-300: #7dd3fc;
  --secondary-400: #38bdf8;
  --secondary-500: #0ea5e9;
  --secondary-600: #0284c7;
  --secondary-700: #0369a1;
  --secondary-800: #075985;
  --secondary-900: #0c4a6e;

  --neutral-0: #ffffff;
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;

  --success-400: #4ade80;
  --success-500: #22c55e;
  --success-600: #16a34a;
  
  --warning-400: #fbbf24;
  --warning-500: #f59e0b;
  
  --error-400: #f87171;
  --error-500: #ef4444;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;

  /* 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-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-medium: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

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

/* Inline Ad Sections */
.inline-ad-section {
  padding: var(--spacing-8) 0;
  display: flex;
  justify-content: center;
  background: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-100) 100%);
  border-top: 1px solid var(--neutral-200);
  border-bottom: 1px solid var(--neutral-200);
}

.inline-ad-section.inline-ad-between-steps {
  padding: var(--spacing-6) 0;
  background: transparent;
  border: none;
}

.inline-ad-container {
  max-width: 1024px;
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 0 var(--spacing-4);
}

/* Inline Ad Unit Styles */
.inline-ad-unit {
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-medium);
  overflow: hidden;
  position: relative;
  width: 100%;
  max-width: 728px;
  height: 250px; /* Standard banner/rectangle size */
}

.inline-ad-unit:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--neutral-300);
  transform: translateY(-2px);
}

/* Responsive ad sizes */
@media (min-width: 768px) {
  .inline-ad-unit {
    height: 250px; /* Medium Rectangle 300x250 equivalent */
  }
}

@media (min-width: 1024px) {
  .inline-ad-unit {
    height: 200px; /* Leaderboard 728x90 equivalent */
  }
}

/* Ad Placeholder Styles */
.ad-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-100) 100%);
  border: 2px dashed var(--neutral-300);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.ad-placeholder::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  animation: shimmer 2s infinite;
}

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

.ad-label {
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--neutral-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Mobile Ad Responsiveness */
@media (max-width: 768px) {
  .inline-ad-section {
    padding: var(--spacing-4) 0;
  }
  
  .inline-ad-container {
    padding: 0 var(--spacing-3);
  }
  
  .inline-ad-unit {
    height: 200px; /* Mobile banner size */
    max-width: 100%;
  }

  .contact-methods {
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
  }

  .contact-section {
    padding: var(--spacing-16) 0;
  }
}

html {
  scroll-behavior: smooth;
}

/* Legal Pages Styles */
.legal-page-section {
  padding: var(--spacing-24) 0 var(--spacing-16);
  min-height: calc(100vh - 200px);
  background: var(--neutral-0);
  position: relative;
  z-index: 1;
}

.legal-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.legal-header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.legal-header h1 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-4);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--neutral-600);
  margin: 0;
}

.last-updated {
  color: var(--neutral-500);
  font-size: var(--font-size-sm);
  margin: 0;
}

.legal-content {
  line-height: 1.7;
}

.legal-section {
  margin-bottom: var(--spacing-8);
}

.legal-section h2 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-4);
  border-bottom: 2px solid var(--primary-500);
  padding-bottom: var(--spacing-2);
}

.legal-section h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--neutral-800);
  margin-bottom: var(--spacing-3);
}

.legal-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--neutral-700);
  margin-bottom: var(--spacing-2);
}

.legal-section p {
  color: var(--neutral-700);
  margin-bottom: var(--spacing-4);
}

.legal-section ul {
  margin-left: var(--spacing-6);
  margin-bottom: var(--spacing-4);
}

.legal-section li {
  color: var(--neutral-700);
  margin-bottom: var(--spacing-2);
}

.legal-section a {
  color: var(--primary-600);
  text-decoration: underline;
  transition: color var(--transition-fast);
}

.legal-section a:hover {
  color: var(--primary-700);
}

/* Contact Page Specific Styles */
.contact-intro {
  text-align: center;
  margin-bottom: var(--spacing-10);
  font-size: var(--font-size-lg);
  color: var(--neutral-600);
}

.contact-methods {
  margin-bottom: var(--spacing-12);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-10);
}

.contact-card {
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-medium);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-300);
}

.contact-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-4);
}

.contact-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-2);
}

.contact-card p {
  color: var(--neutral-600);
  margin-bottom: var(--spacing-4);
}

.contact-link {
  font-weight: 600;
  color: var(--primary-600);
  text-decoration: none;
  padding: var(--spacing-2) var(--spacing-4);
  border: 2px solid var(--primary-600);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: inline-block;
}

.contact-link:hover {
  background: var(--primary-600);
  color: white;
}

/* Contact Form Styles */
.contact-form-section {
  background: var(--neutral-50);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8);
  margin-bottom: var(--spacing-10);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4);
}

.form-group {
  margin-bottom: var(--spacing-4);
}

.form-group label {
  display: block;
  font-weight: 500;
  color: var(--neutral-700);
  margin-bottom: var(--spacing-2);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-3);
  border: 2px solid var(--neutral-300);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-500)20;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-2);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  cursor: pointer;
}

.submit-button {
  width: 100%;
  background: var(--primary-600);
  color: white;
  border: none;
  padding: var(--spacing-4) var(--spacing-6);
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.submit-button:hover {
  background: var(--primary-700);
  transform: translateY(-1px);
}

.submit-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-notice {
  background: var(--warning-50);
  border: 1px solid var(--warning-300);
  border-radius: var(--radius-md);
  padding: var(--spacing-4);
  margin-top: var(--spacing-4);
}

.form-notice p {
  color: var(--warning-800);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* FAQ Section */
.faq-section {
  margin-bottom: var(--spacing-10);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-6);
}

.faq-item {
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-5);
}

.faq-item h4 {
  color: var(--primary-600);
  margin-bottom: var(--spacing-2);
}

.faq-item p {
  color: var(--neutral-600);
  font-size: var(--font-size-sm);
  margin: 0;
}

/* About Page Specific */
.cta-section {
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
  color: white;
  text-align: center;
  padding: var(--spacing-8);
  border-radius: var(--radius-xl);
  margin-top: var(--spacing-10);
}

.cta-section h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-2);
}

.cta-section p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-6);
  opacity: 0.9;
}

.cta-button {
  background: white;
  color: var(--primary-600);
  padding: var(--spacing-4) var(--spacing-8);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-size-lg);
  display: inline-block;
  transition: all var(--transition-medium);
  border: 2px solid white;
}

.cta-button:hover {
  background: transparent;
  color: white;
  transform: translateY(-2px);
}

/* Footer Links */
.footer-links {
  margin-top: var(--spacing-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  justify-content: center;
}

.footer-link {
  color: var(--neutral-400);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-400);
}

/* Navigation Active State */
.nav-link.active {
  color: var(--primary-600);
  font-weight: 600;
}

/* Responsive Design for Legal Pages */
@media (max-width: 768px) {
  .legal-page-section {
    padding: var(--spacing-16) 0 var(--spacing-8);
  }
  
  .legal-container {
    padding: 0 var(--spacing-3);
  }
  
  .legal-header h1 {
    font-size: var(--font-size-3xl);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .faq-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2);
  }
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--neutral-700);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Legal pages get clean white background */
body.legal-page {
  background: var(--neutral-50);
}

body.legal-page .bg-decoration {
  display: none;
}

/* Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.loading-screen.fade-out {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  color: var(--neutral-0);
}

.loading-logo {
  font-size: var(--font-size-6xl);
  margin-bottom: var(--spacing-4);
  animation: bounce 2s infinite;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top: 3px solid var(--neutral-0);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-4);
}

.loading-text {
  font-size: var(--font-size-lg);
  font-weight: 500;
  opacity: 0.9;
}

/* Background Decoration */
.bg-decoration {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: -1;
}

.bg-circle {
  position: absolute;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  animation: float 20s infinite linear;
}

.bg-circle-1 {
  width: 300px;
  height: 300px;
  top: -150px;
  right: -150px;
  animation-delay: 0s;
}

.bg-circle-2 {
  width: 200px;
  height: 200px;
  bottom: -100px;
  left: -100px;
  animation-delay: -10s;
}

.bg-circle-3 {
  width: 150px;
  height: 150px;
  top: 50%;
  left: -75px;
  animation-delay: -15s;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 1000;
  transition: all var(--transition-medium);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-2) var(--spacing-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-brand:hover {
  transform: translateY(-1px);
  opacity: 0.8;
}

.nav-logo {
  font-size: var(--font-size-2xl);
}

.nav-logo-img {
  height: 48px;
  width: auto;
  margin-right: var(--spacing-3);
  border-radius: var(--radius-sm);
  mix-blend-mode: multiply;
  opacity: 0.95;
}

.nav-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--neutral-800);
}

.nav-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

.status-disconnected {
  background: var(--error-400);
}

.status-connected {
  background: var(--success-500);
}

.status-text {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--neutral-600);
}

.nav-links {
  display: flex;
  gap: var(--spacing-8);
}

.nav-link {
  color: var(--neutral-600);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--neutral-800);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-500);
  transition: width var(--transition-fast);
}

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

/* Main Content */
.main-content {
  margin-top: 80px;
}

/* Hero Section */
.hero-section {
  padding: var(--spacing-20) 0;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
  text-align: center;
}

.hero-content {
  color: var(--neutral-0);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.hero-title {
  margin-bottom: var(--spacing-6);
}

.hero-title-main {
  display: block;
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-2);
  background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 1s ease-out;
}

.hero-title-sub {
  display: block;
  font-size: var(--font-size-3xl);
  font-weight: 400;
  opacity: 0.9;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-description {
  font-size: var(--font-size-lg);
  line-height: 1.8;
  opacity: 0.9;
  margin: 0 auto var(--spacing-4);
  max-width: 500px;
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  padding: var(--spacing-3) var(--spacing-5);
  margin: 0 auto var(--spacing-8);
  max-width: fit-content;
  animation: fadeInUp 1s ease-out 0.6s both;
  transition: all var(--transition-medium);
}

.hero-note:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.note-icon {
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.note-text {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-align: center;
  line-height: 1.4;
}

/* Connection Card */
.connection-card {
  background: var(--neutral-0);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-2xl);
  animation: fadeInUp 1s ease-out 0.6s both;
  position: relative;
  overflow: hidden;
}

.connection-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500) 0%, var(--secondary-500) 100%);
}

.card-state {
  text-align: center;
  transition: all var(--transition-medium);
  color: var(--neutral-700);
}

.card-state h3 {
  color: var(--neutral-800);
  font-weight: 600;
  margin-bottom: var(--spacing-3);
}

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

.state-icon {
  position: relative;
  margin-bottom: var(--spacing-4);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
}

.state-emoji {
  font-size: var(--font-size-4xl);
  position: relative;
  z-index: 2;
}

/* Pulse Animation */
.pulse-ring {
  position: absolute;
  border: 3px solid var(--secondary-400);
  border-radius: var(--radius-full);
  animation: pulseRing 2s infinite;
  width: 60px;
  height: 60px;
}

.pulse-ring-delay {
  animation-delay: 0.5s;
}

/* Loading Bar */
.loading-bar {
  width: 100%;
  height: 4px;
  background: var(--neutral-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: var(--spacing-4);
}

.loading-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-500) 0%, var(--secondary-500) 100%);
  border-radius: var(--radius-full);
  animation: loadingBar 2s infinite;
}

/* Connect Button */
.connect-button {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--spacing-3);
  border-radius: var(--radius-lg);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
  margin: var(--spacing-6) 0;
}

.connect-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.connect-button:active {
  transform: translateY(0);
}

.button-content img {
  height: 48px;
  width: auto;
}

.strava-button-fallback {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  background: #fc4c02;
  color: white;
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-medium);
}

.strava-button-fallback:hover {
  background: #e63900;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.strava-button-fallback svg {
  flex-shrink: 0;
}

.button-ripple {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(252, 76, 2, 0.1) 0%, transparent 70%);
  transform: scale(0);
  transition: transform 0.6s ease-out;
}

.connect-button:active .button-ripple {
  transform: scale(4);
}

/* Connect Features */
.connect-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  margin-top: var(--spacing-6);
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--neutral-200);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--neutral-700);
}

.feature-item span:not(.feature-check) {
  color: var(--neutral-600);
}

.feature-check {
  color: var(--success-500);
  font-weight: 600;
}

/* Success Checkmark */
.success-checkmark {
  position: relative;
  width: 60px;
  height: 60px;
}

.check-icon {
  width: 60px;
  height: 60px;
  position: relative;
  border-radius: var(--radius-full);
  box-sizing: content-box;
  border: 4px solid var(--success-500);
}

.check-icon::before {
  top: 3px;
  left: -2px;
  width: 30px;
  transform-origin: 100% 50%;
  border-radius: 100px 0 0 100px;
}

.check-icon::after {
  top: 0;
  left: 30px;
  width: 60px;
  transform-origin: 0 50%;
  border-radius: 0 100px 100px 0;
  animation: rotateCircle 4.25s ease-in-out;
}

.check-icon::before,
.check-icon::after {
  content: '';
  height: 100px;
  position: absolute;
  background: var(--neutral-0);
  transform: rotate(-45deg);
}

.icon-line {
  height: 5px;
  background: var(--success-500);
  display: block;
  border-radius: 2px;
  position: absolute;
  z-index: 10;
}

.line-tip {
  top: 46px;
  left: 14px;
  width: 25px;
  transform: rotate(45deg);
  animation: animateCheckTip 0.75s 1.2s cubic-bezier(0.17, 0.89, 0.32, 1.49) both;
}

.line-long {
  top: 38px;
  right: 8px;
  width: 47px;
  transform: rotate(-45deg);
  animation: animateCheckLong 0.75s 1.5s cubic-bezier(0.17, 0.89, 0.32, 1.49) both;
}

.icon-circle {
  top: -4px;
  left: -4px;
  z-index: 10;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  border: 4px solid var(--success-500);
  position: absolute;
}

/* Connection Details */
.connection-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  margin-top: var(--spacing-6);
  padding-top: var(--spacing-6);
  border-top: 1px solid var(--neutral-200);
}

.detail-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.detail-icon {
  font-size: var(--font-size-xl);
}

.detail-text strong {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--neutral-800);
}

.detail-text small {
  color: var(--neutral-600);
  font-size: var(--font-size-xs);
}

/* Hero Visual */
.hero-visual {
  animation: fadeInUp 1s ease-out 0.8s both;
}

.weather-preview-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-2xl);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-4);
  padding-bottom: var(--spacing-3);
  border-bottom: 1px solid var(--neutral-200);
}

.preview-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--neutral-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.preview-live-dot {
  width: 8px;
  height: 8px;
  background: var(--success-500);
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

.weather-data {
  color: var(--neutral-800);
}

.weather-main {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.weather-icon {
  font-size: var(--font-size-2xl);
}

.weather-condition {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.weather-details {
  display: grid;
  gap: var(--spacing-3);
}

.weather-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-2) 0;
}

.weather-label {
  font-size: var(--font-size-sm);
  color: var(--neutral-600);
}

.weather-value {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--neutral-800);
}

.weather-value.highlight {
  color: var(--primary-600);
}

/* Features Section */
.features-section {
  padding: var(--spacing-24) 0;
  background: var(--neutral-0);
  position: relative;
}

.features-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-16);
}

.section-header h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--neutral-800);
  margin-bottom: var(--spacing-4);
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--neutral-600);
  max-width: 600px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-8);
}

.feature-card {
  background: var(--neutral-0);
  border-radius: var(--radius-xl);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--neutral-200);
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-500) 0%, var(--secondary-500) 100%);
  transform: scaleX(0);
  transition: transform var(--transition-medium);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-100) 0%, var(--secondary-100) 100%);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-4);
}

.feature-icon {
  font-size: var(--font-size-2xl);
}

.feature-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--neutral-800);
  margin-bottom: var(--spacing-3);
}

.feature-card p {
  color: var(--neutral-600);
  line-height: 1.7;
  margin-bottom: var(--spacing-4);
}

.feature-tech {
  margin-top: var(--spacing-4);
}

.tech-tag {
  display: inline-block;
  background: var(--neutral-100);
  color: var(--neutral-700);
  font-size: var(--font-size-xs);
  font-weight: 500;
  padding: var(--spacing-1) var(--spacing-3);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* How It Works Section */
.how-it-works-section {
  padding: var(--spacing-24) 0;
  background: linear-gradient(135deg, var(--neutral-50) 0%, var(--secondary-50) 100%);
}

.how-it-works-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.steps-timeline {
  position: relative;
}

.step-item {
  display: grid;
  grid-template-columns: 80px 1fr 80px;
  gap: var(--spacing-6);
  align-items: center;
  margin-bottom: var(--spacing-16);
  position: relative;
}

.step-item.step-reverse {
  grid-template-columns: 80px 1fr 80px;
}

.step-item.step-reverse .step-content {
  text-align: right;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
  color: var(--neutral-0);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: 700;
  box-shadow: var(--shadow-lg);
  z-index: 2;
  position: relative;
}

.step-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--neutral-800);
  margin-bottom: var(--spacing-2);
}

.step-content p {
  color: var(--neutral-600);
  line-height: 1.7;
}

.step-visual {
  width: 60px;
  height: 60px;
  background: var(--neutral-0);
  border: 3px solid var(--neutral-200);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.step-icon {
  font-size: var(--font-size-xl);
}

.step-connector {
  position: absolute;
  left: 69px;
  top: 60px;
  width: 2px;
  height: calc(100% - 60px);
  background: linear-gradient(to bottom, var(--primary-500), var(--secondary-500));
  z-index: 1;
}

.step-item:last-child + .step-connector {
  display: none;
}

/* Strava Example Card */
.strava-example-card {
  background: var(--neutral-0);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4);
  margin-top: var(--spacing-4);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--neutral-200);
  text-align: left;
  max-width: 400px;
}

.strava-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-3);
}

.strava-avatar {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #fc4c02, #e63900);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
}

.strava-info {
  display: flex;
  flex-direction: column;
}

.strava-info strong {
  color: var(--neutral-800);
  font-size: var(--font-size-base);
  font-weight: 600;
}

.strava-stats {
  color: var(--neutral-500);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

.strava-description {
  color: var(--neutral-700);
  line-height: 1.6;
  font-size: var(--font-size-sm);
}

.weather-addition {
  margin-top: var(--spacing-3);
  padding: var(--spacing-2) var(--spacing-3);
  background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
  border: 1px solid var(--secondary-200);
  border-radius: var(--radius-md);
  color: var(--secondary-700);
  font-weight: 500;
  font-size: var(--font-size-xs);
  position: relative;
}

.weather-addition::before {
  content: '';
  position: absolute;
  left: -1px;
  top: -1px;
  bottom: -1px;
  width: 3px;
  background: var(--secondary-400);
  border-radius: var(--radius-sm);
}

.weather-label {
  font-size: var(--font-size-xs);
  color: var(--secondary-600);
  font-weight: 600;
  margin-bottom: var(--spacing-1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Contact Section */
.contact-section {
  padding: var(--spacing-20) 0;
  background: var(--neutral-50);
}

.contact-container {
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

.contact-content {
  margin-top: var(--spacing-10);
}

.contact-methods {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

.contact-method {
  background: var(--neutral-0);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-medium);
}

.contact-method:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-300);
}

.contact-method .contact-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-4);
}

.contact-method h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--neutral-900);
  margin-bottom: var(--spacing-2);
}

.contact-method p {
  color: var(--neutral-600);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-sm);
}

.contact-method .contact-link {
  display: inline-block;
  background: var(--primary-600);
  color: white;
  text-decoration: none;
  padding: var(--spacing-3) var(--spacing-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.contact-method .contact-link:hover {
  background: var(--primary-700);
  transform: translateY(-1px);
}

.contact-note {
  background: var(--secondary-50);
  border: 1px solid var(--secondary-200);
  border-radius: var(--radius-lg);
  padding: var(--spacing-5);
  text-align: center;
}

.contact-note p {
  color: var(--secondary-700);
  margin: 0;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

/* Footer */
.footer {
  background: var(--neutral-800);
  padding: var(--spacing-12) 0;
  margin-top: var(--spacing-24);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.footer-content {
  text-align: center;
  color: var(--neutral-300);
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-4);
}

.footer-logo {
  font-size: var(--font-size-2xl);
}

.footer-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--neutral-0);
}

.footer-description {
  font-size: var(--font-size-base);
  line-height: 1.7;
  margin-bottom: var(--spacing-6);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.footer-description a {
  color: var(--primary-400);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-description a:hover {
  color: var(--primary-300);
  text-decoration: underline;
}

.footer-tech {
  display: flex;
  gap: var(--spacing-3);
  justify-content: center;
  flex-wrap: wrap;
}

.tech-badge {
  background: var(--neutral-700);
  color: var(--neutral-200);
  font-size: var(--font-size-xs);
  font-weight: 500;
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Notification System */
.notification-container {
  position: fixed;
  top: 100px;
  right: var(--spacing-6);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.notification {
  background: var(--neutral-0);
  border-radius: var(--radius-lg);
  padding: var(--spacing-4) var(--spacing-5);
  box-shadow: var(--shadow-xl);
  border-left: 4px solid var(--primary-500);
  min-width: 300px;
  max-width: 400px;
  animation: slideInRight 0.3s ease-out;
  position: relative;
  overflow: hidden;
}

.notification.success {
  border-left-color: var(--success-500);
}

.notification.error {
  border-left-color: var(--error-500);
}

.notification.warning {
  border-left-color: var(--warning-500);
}

.notification-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-2);
}

.notification-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--neutral-800);
}

.notification-close {
  background: none;
  border: none;
  color: var(--neutral-400);
  cursor: pointer;
  padding: 0;
  font-size: var(--font-size-lg);
  line-height: 1;
  transition: color var(--transition-fast);
}

.notification-close:hover {
  color: var(--neutral-600);
}

.notification-message {
  font-size: var(--font-size-sm);
  color: var(--neutral-600);
  line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .hero-title-main {
    font-size: var(--font-size-4xl);
  }

  .hero-title-sub {
    font-size: var(--font-size-2xl);
  }

  .connection-card {
    padding: var(--spacing-6);
  }

  .step-item {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-4);
  }

  .step-item.step-reverse {
    grid-template-columns: 1fr;
  }

  .step-item.step-reverse .step-content {
    text-align: center;
  }

  .step-connector {
    display: none;
  }

  .section-header h2 {
    font-size: var(--font-size-3xl);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .notification-container {
    right: var(--spacing-4);
    left: var(--spacing-4);
  }

  .notification {
    min-width: auto;
    max-width: none;
  }
}

@media (max-width: 768px) {
  .nav-links {
    gap: var(--spacing-4);
  }
  
  .nav-link {
    font-size: var(--font-size-xs);
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: var(--spacing-3) var(--spacing-4);
  }
  
  .nav-links {
    gap: var(--spacing-3);
  }
}

  .hero-section {
    padding: var(--spacing-12) 0;
  }

  .hero-title-main {
    font-size: var(--font-size-3xl);
  }

  .hero-title-sub {
    font-size: var(--font-size-xl);
  }

  .connection-card {
    padding: var(--spacing-5);
  }

  .section-header h2 {
    font-size: var(--font-size-2xl);
  }
}

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

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0,0,0);
  }
  40%, 43% {
    transform: translate3d(0, -30px, 0);
  }
  70% {
    transform: translate3d(0, -15px, 0);
  }
  90% {
    transform: translate3d(0,-4px,0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes pulseRing {
  0% {
    transform: scale(0.33);
    opacity: 1;
  }
  80%, 100% {
    transform: scale(2.4);
    opacity: 0;
  }
}

@keyframes loadingBar {
  0% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(0%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes float {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
  100% {
    transform: translateY(0px) rotate(360deg);
  }
}

@keyframes rotateCircle {
  0% {
    transform: rotate(-45deg);
  }
  5% {
    transform: rotate(-45deg);
  }
  12% {
    transform: rotate(-405deg);
  }
  100% {
    transform: rotate(-405deg);
  }
}

@keyframes animateCheckTip {
  0% {
    width: 0;
    left: 1px;
    top: 19px;
  }
  54% {
    width: 0;
    left: 1px;
    top: 19px;
  }
  70% {
    width: 50px;
    left: -8px;
    top: 37px;
  }
  84% {
    width: 17px;
    left: 21px;
    top: 48px;
  }
  100% {
    width: 25px;
    left: 14px;
    top: 45px;
  }
}

@keyframes animateCheckLong {
  0% {
    width: 0;
    right: 46px;
    top: 54px;
  }
  65% {
    width: 0;
    right: 46px;
    top: 54px;
  }
  84% {
    width: 55px;
    right: 0px;
    top: 35px;
  }
  100% {
    width: 47px;
    right: 8px;
    top: 38px;
  }
}

/* AOS Animation Attributes */
[data-aos="fade-up"] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-aos="fade-up"].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

[data-aos="fade-right"] {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-aos="fade-right"].aos-animate {
  opacity: 1;
  transform: translateX(0);
}

[data-aos="fade-left"] {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-aos="fade-left"].aos-animate {
  opacity: 1;
  transform: translateX(0);
}

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