:root {
  /* Couleurs principales */
  --color-primary: #8d94fd;
  --color-secondary: #f9ae4e;
  --color-text: #222;
  --color-text-light: #777;
  --color-white: #fff;
  --color-gray: #e8e8e8;

  /* Gradients */
  --gradient-primary: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);

  /* Espacements */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Typographie */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 48px;

  /* Transitions */
  --transition-fast: 0.3s ease-in-out;

  /* Ombres */
  --shadow-lg: 0px 20px 80px 0px rgba(153, 153, 153, 0.3);

  /* Border radius */
  --border-radius: 12px;
  --border-radius-sm: 5px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
}

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

/* Header */
.header {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 99;
  background: var(--gradient-primary);
  transition: background var(--transition-fast);
  height: 80px;
}

.header_menu {
  height: 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header_logo-link {
  color: var(--color-white);
  text-decoration: none;
  font-weight: 700;
  font-size: var(--font-size-md);
  transition: opacity var(--transition-fast);
}

.header_logo-link:hover {
  opacity: 0.9;
}

.header_nav-menu {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.header_nav-link {
  color: var(--color-white);
  text-transform: uppercase;
  font-weight: 500;
  font-size: var(--font-size-xs);
  text-decoration: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: background-color var(--transition-fast);
}

.header_nav-link:hover,
.header_nav-link[aria-current="page"] {
  background-color: rgba(255, 255, 255, 0.1);
}

/* Section Intro */
.intro {
  padding-top: 120px;
  padding-bottom: 120px;
  background: var(--gradient-primary);
  color: var(--color-white);
}

.intro_inner {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-xl);
  background: var(--color-white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
}

.intro_content {
  color: var(--color-text);
}

.mentions_title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  color: var(--color-text);
}

.intro_content h3 {
  font-size: 24px;
  margin: var(--spacing-lg) 0 var(--spacing-sm);
  color: var(--color-primary);
}

.intro_content p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

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

.intro_content a:hover {
  color: var(--color-secondary);
}

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

/* Footer */
.footer {
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: var(--spacing-lg) 0;
}

.footer_inner {
  display: flex;
  justify-content: center;
}

.footer_list {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  list-style: none;
  flex-wrap: wrap;
}

.footer_link {
  color: var(--color-white);
  text-decoration: none;
  transition: opacity var(--transition-fast);
  font-weight: 500;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
}

.footer_link:hover,
.footer_link[aria-current="page"] {
  opacity: 0.8;
}

.footer_rights {
  color: var(--color-white);
  opacity: 0.8;
  font-size: var(--font-size-xs);
}

/* Media Queries */
@media (max-width: 768px) {
  .intro {
    padding-top: 100px;
    padding-bottom: 100px;
  }

  .intro_inner {
    padding: var(--spacing-lg);
  }

  .mentions_title {
    font-size: 36px;
  }

  .intro_content h3 {
    font-size: 20px;
  }
}

@media (max-width: 576px) {
  .intro {
    padding-top: 80px;
    padding-bottom: 80px;
  }

  .intro_inner {
    padding: var(--spacing-md);
  }

  .mentions_title {
    font-size: 28px;
  }

  .footer_list {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }
}