/* Healthy Network Landing Page Styles */

/* CSS Variables for theming */
:root {
  /* Colors */
  --color-green: #34C759;
  --color-yellow: #FFCC00;
  --color-red: #FF3B30;
  --color-gray: #8E8E93;

  /* Light mode (default) */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F2F2F7;
  --bg-tertiary: #E5E5EA;
  --text-primary: #000000;
  --text-secondary: #3C3C43;
  --text-tertiary: #8E8E93;
  --border-color: #C6C6C8;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, ui-monospace, Menlo, monospace;

  /* Sizes */
  --max-width: 1200px;
  --border-radius: 12px;
  --border-radius-lg: 20px;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #000000;
    --bg-secondary: #1C1C1E;
    --bg-tertiary: #2C2C2E;
    --text-primary: #FFFFFF;
    --text-secondary: #EBEBF5;
    --text-tertiary: #8E8E93;
    --border-color: #38383A;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  color: var(--text-secondary);
}

a {
  color: var(--color-green);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

@media (prefers-color-scheme: dark) {
  .nav {
    background: rgba(0, 0, 0, 0.8);
  }
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.nav-logo .nav-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

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

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

.hero-text h1 {
  margin-bottom: var(--spacing-sm);
}

.hero-text .subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

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

@media (max-width: 768px) {
  .hero-cta {
    justify-content: center;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.875rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  font-size: 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: var(--border-color);
}

/* App Store Badge */
.app-store-badge {
  height: 48px;
  transition: opacity 0.2s ease;
}

.app-store-badge:hover {
  opacity: 0.8;
}

/* Hero Visual */
.hero-visual {
  position: relative;
}

.hero-screenshot {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
}

@media (prefers-color-scheme: dark) {
  .hero-screenshot {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  }
}

@media (max-width: 768px) {
  .hero-screenshot {
    max-width: 100%;
  }
}

/* Screenshot Gallery */
.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.screenshot-item {
  position: relative;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.screenshot-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

@media (prefers-color-scheme: dark) {
  .screenshot-item {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }

  .screenshot-item:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
  }
}

.screenshot-item img {
  width: 100%;
  height: auto;
  display: block;
}

.screenshot-caption {
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.menu-bar-demo {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

@media (prefers-color-scheme: dark) {
  .menu-bar-demo {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  }
}

.menu-bar-mock {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: var(--spacing-xs) var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.status-dot.green { background: var(--color-green); }
.status-dot.yellow { background: var(--color-yellow); }
.status-dot.red { background: var(--color-red); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.sparkline-mock {
  height: 60px;
  background: linear-gradient(90deg,
    var(--color-green) 0%,
    var(--color-green) 70%,
    var(--color-yellow) 85%,
    var(--color-green) 100%
  );
  border-radius: 8px;
  opacity: 0.3;
  position: relative;
  overflow: hidden;
}

.sparkline-mock::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  animation: shimmer 2s infinite;
}

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

/* Problem Section */
.problem {
  background: var(--bg-secondary);
}

.problem-content {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.problem h2 {
  margin-bottom: var(--spacing-sm);
}

.problem .lead {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
}

.problem-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  text-align: left;
}

@media (max-width: 768px) {
  .problem-cards {
    grid-template-columns: 1fr;
  }
}

.problem-card {
  background: var(--bg-primary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.problem-card .icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.problem-card h3 {
  margin-bottom: var(--spacing-xs);
}

/* Features Section */
.features {
  background: var(--bg-primary);
}

.features h2 {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

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

.feature-card {
  background: var(--bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  transition: transform 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.feature-icon.green { background: rgba(52, 199, 89, 0.15); }
.feature-icon.yellow { background: rgba(255, 204, 0, 0.15); }
.feature-icon.red { background: rgba(255, 59, 48, 0.15); }
.feature-icon.gray { background: rgba(142, 142, 147, 0.15); }

.feature-card h3 {
  margin-bottom: var(--spacing-xs);
}

/* Technical Section */
.technical {
  background: var(--bg-secondary);
}

.technical-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

@media (max-width: 768px) {
  .technical-content {
    grid-template-columns: 1fr;
  }
}

.technical h2 {
  margin-bottom: var(--spacing-sm);
}

.tech-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.tech-stat {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border-radius: var(--border-radius);
}

.tech-stat .number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-green);
  font-family: var(--font-mono);
}

.tech-stat .label {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

.code-block {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  overflow-x: auto;
}

.code-block .comment {
  color: var(--text-tertiary);
}

.code-block .keyword {
  color: var(--color-red);
}

.code-block .string {
  color: var(--color-green);
}

/* Pricing Section */
.pricing {
  background: var(--bg-primary);
  text-align: center;
}

.pricing h2 {
  margin-bottom: var(--spacing-sm);
}

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

.pricing-card {
  max-width: 400px;
  margin: 0 auto;
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  border: 2px solid var(--color-green);
}

.pricing-card .price {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.pricing-card .price-note {
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-md);
}

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

.pricing-features li {
  padding: var(--spacing-xs) 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-green);
  font-weight: 600;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--border-color);
}

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

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

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

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

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

/* Legal Pages */
.legal-page {
  padding-top: 100px;
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: var(--spacing-xl);
}

.legal-content h1 {
  margin-bottom: var(--spacing-sm);
}

.legal-content .last-updated {
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-lg);
}

.legal-content h2 {
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  font-size: 1.5rem;
}

.legal-content h3 {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  font-size: 1.125rem;
}

.legal-content p {
  margin-bottom: var(--spacing-sm);
}

.legal-content ul, .legal-content ol {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-md);
}

.legal-content li {
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}

.legal-content strong {
  color: var(--text-primary);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-green { color: var(--color-green); }
.text-yellow { color: var(--color-yellow); }
.text-red { color: var(--color-red); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }