/* ==========================================================================
   Xrateo Landing Page - Mobile-First CSS
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
  /* Colors */
  --color-primary: #4CAF50;
  --color-primary-dark: #388E3C;
  --color-text: #212121;
  --color-text-light: #757575;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f5;
  --color-border: #e0e0e0;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --line-height: 1.6;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;

  /* Layout */
  --container-max: 1200px;
  --container-padding: 1rem;

  /* Touch targets */
  --touch-min: 44px;
}

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

html {
  scroll-behavior: smooth;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover,
a:focus {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

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

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo:hover,
.site-logo:focus {
  color: var(--color-primary);
  text-decoration: none;
}

.site-logo img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.back-home {
  min-height: var(--touch-min);
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  padding: var(--space-lg) 0;
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

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

.footer-nav a {
  min-height: var(--touch-min);
  display: inline-flex;
  align-items: center;
  color: var(--color-text-light);
}

.footer-nav a:hover,
.footer-nav a:focus {
  color: var(--color-primary);
}

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

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  padding: var(--space-2xl) 0;
  background-color: var(--color-bg-alt);
  text-align: center;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

.hero-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--space-md);
  border-radius: 24px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.hero-tagline {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-md);
}

.hero-headline {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.hero-subheadline {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Store Badges
   -------------------------------------------------------------------------- */
.store-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--touch-min);
  min-height: var(--touch-min);
  padding: var(--space-xs);
  border-radius: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.store-badge:hover,
.store-badge:focus {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  text-decoration: none;
}

.store-badge img {
  width: 135px;
  height: 40px;
}

/* --------------------------------------------------------------------------
   Features Section
   -------------------------------------------------------------------------- */
.features {
  padding: var(--space-2xl) 0;
  background-color: var(--color-bg);
}

.features-heading {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-text);
}

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.feature-card {
  padding: var(--space-md);
  background-color: var(--color-bg-alt);
  border-radius: 12px;
  text-align: center;
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
  border-radius: 12px;
}

.feature-icon img {
  width: 48px;
  height: 48px;
}

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

.feature-subtitle {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.feature-description {
  font-size: var(--font-size-base);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.cta {
  padding: var(--space-2xl) 0;
  text-align: center;
  background-color: var(--color-bg-alt);
}

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

.cta-buttons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Legal Pages
   -------------------------------------------------------------------------- */
.legal-page {
  padding: var(--space-2xl) 0;
}

.legal-page .container {
  max-width: 800px;
}

.legal-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.legal-effective {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
}

.legal-content h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.legal-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.legal-content p {
  margin-bottom: var(--space-sm);
  color: var(--color-text-light);
}

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

.legal-content li {
  margin-bottom: var(--space-xs);
}

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

.legal-content a:hover,
.legal-content a:focus {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
    --font-size-2xl: 2.5rem;
    --font-size-3xl: 3rem;
  }

  .hero-cta,
  .cta-buttons {
    flex-direction: row;
    justify-content: center;
  }

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

  .feature-card {
    text-align: left;
  }

  .feature-icon {
    margin: 0 0 var(--space-sm) 0;
  }
}

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

@media (min-width: 1440px) {
  :root {
    --container-padding: 3rem;
  }

  .features-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}