/* Import Fonts (Nunito and Roboto) */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;700;900&family=Roboto:wght@400;500;700&display=swap');
@import 'variables.css';

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-sans);
  color: var(--color-text-main);
  background-color: var(--color-surface); /* Always white background by default */
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography Rules based on Cache de Charge */
h1 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-black);
  line-height: 1.2;
  font-size: clamp(2.5rem, 5vw, 3rem); /* ~40-48px */
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  font-size: clamp(1.75rem, 4vw, 2rem); /* ~28-32px */
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-family: 'Arial', system-ui, sans-serif;
  font-weight: var(--font-weight-bold);
  line-height: 1.3;
  font-size: 1.375rem; /* ~22px */
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-sm);
}

p {
  font-family: var(--font-family-sans);
  font-size: 1rem; /* 16px */
  color: var(--color-text-main);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

small, .legend {
  font-family: var(--font-family-sans);
  font-size: 0.875rem; /* ~14px */
  color: var(--color-text-muted);
}

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

a:hover {
  text-decoration: underline;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

/* Base Utility Classes */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xxl) 0;
}
.section-light {
  background-color: var(--color-background-light); /* #F5F5F5 */
}
.section-green-light {
  background-color: var(--color-background-alt); /* Soft Green Accent */
}
.section-dark {
  background-color: var(--color-primary-dark);
  color: var(--color-surface);
}

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

/* ==========================================================================
   BUTTON SYSTEM (Client Specs)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: 'Arial', system-ui, sans-serif;
  font-weight: var(--font-weight-bold);
  font-size: 1rem; /* 16px */
  text-transform: uppercase;
  border-radius: var(--border-radius-lg); /* 25px */
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  text-decoration: none !important;
  gap: 0.5rem;
}

/* Bouton Primaire (Rouge) : Action forte */
.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-surface) !important;
}
.btn-primary:hover {
  background-color: #C11519; /* Darker red */
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Bouton Secondaire (Vert) : Navigation, Inscription */
.btn-secondary {
  background-color: var(--color-primary);
  color: var(--color-surface) !important;
}
.btn-secondary:hover {
  background-color: #24752A; /* Darker green */
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Bouton Outline (Bordure) : Liens secondaires */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary) !important;
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-surface) !important;
}

/* Bouton Tertiaire (Jaune) : Partenaires, Highlights */
.btn-tertiary {
  background-color: var(--color-accent);
  color: var(--color-primary-dark) !important;
}
.btn-tertiary:hover {
  background-color: #E2C513;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s var(--transition-normal) forwards;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}