/* Variables CSS */
:root {
  /* Couleurs */
  --color-blue-light: #E8F4F8;
  --color-blue-gradient-start: #D4E8F0;
  --color-blue-gradient-end: #B8D9E8;
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-peach: #FFE5D9;
  --color-text-dark: #1a1a1a;
  --color-text-light: #333333;
  
  /* Espacements */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  
  /* Typographie */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 48px;
  --font-size-4xl: 64px;
  
  --line-height-base: 1.5;
  --line-height-tight: 1.2;
  
  /* Transitions */
  --transition-base: 0.2s ease;
}

/* Reset et base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  height: 100%;
  overflow: hidden;
  margin: 0;
  padding: 0;
}

/* Container principal */
.container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Section héro (gauche) - Image pleine page */
.hero-section {
  position: relative;
  width: 100%;
  height: 50vh;
  overflow: hidden;
  flex-shrink: 0;
}

.hero-background-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Section contenu (droite) - Mobile */
.content-section {
  background-color: var(--color-white);
  padding: var(--spacing-xl) var(--spacing-md);
  flex: 1;
  overflow-y: auto;
  height: 50vh;
}

.content-wrapper {
  max-width: 100%;
  margin: 0 auto;
  text-align: center;
}

.content-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-tight);
  text-align: center;
}

.btn {
  display: inline-block;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-size-base);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  margin-bottom: var(--spacing-xl);
  margin-left: auto;
  margin-right: auto;
}

.btn-primary {
  padding: 11px 25px;
  background-color: #123293;
  color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: #0f2879;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 14px 21px;
  background-color: #E8E8E8;
  color: var(--color-black);
  border: none;
  outline: none;
  margin-top: var(--spacing-lg);
}

.btn-secondary:focus,
.btn-secondary:focus-visible {
  outline: none;
  border: none;
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: #D8D8D8;
}

.btn-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-black);
  color: var(--color-white);
  font-size: var(--font-size-sm);
}

.text-content {
  margin-bottom: var(--spacing-lg);
  text-align: left;
}

.paragraph {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
  line-height: var(--line-height-base);
  font-size: 14px;
}

.paragraph strong {
  font-weight: 600;
  color: var(--color-text-dark);
}

/* Navigation réseaux sociaux */
.social-nav {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
  justify-content: center;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: #E5E5E5;
  color: var(--color-black);
  text-decoration: none;
  transition: opacity var(--transition-base);
  font-weight: 500;
}

.social-link:hover,
.social-link:focus {
  opacity: 0.7;
}

.social-link svg {
  width: 15px;
  height: 15px;
}

.social-icon-text {
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
}

/* Media queries - Desktop */
@media (min-width: 768px) {
  .container {
    flex-direction: row;
    height: 100vh;
  }
  
  .hero-section {
    width: 50%;
    height: 100vh;
  }
  
  .hero-background-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .content-section {
    width: 50%;
    height: 100vh;
    padding: var(--spacing-2xl) var(--spacing-xl);
    display: flex;
    align-items: center;
    overflow-y: auto;
  }
  
  .content-wrapper {
    max-width: 600px;
    width: 100%;
  }
  
  .content-title {
    font-size: var(--font-size-3xl);
  }
  
  .paragraph {
    font-size: 14px;
  }
  
  .social-nav {
    justify-content: center;
  }
}

/* Media queries - Large Desktop */
@media (min-width: 1200px) {
  .content-section {
    padding: var(--spacing-2xl) var(--spacing-2xl);
  }
  
  .content-wrapper {
    max-width: 700px;
  }
}

/* Accessibilité */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible pour l'accessibilité */
*:focus-visible:not(.btn) {
  outline: 2px solid var(--color-black);
  outline-offset: 2px;
}