/* ===== Global Styles ===== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Palette de Couleurs Professionnelle */
  --primary-dark: #1e3a5f;      /* Bleu foncé - Confiance */
  --primary-blue: #2563eb;       /* Bleu vif */
  --primary-light: #3b82f6;      /* Bleu clair */
  --success-green: #10b981;      /* Vert succès */
  --warning-orange: #f97316;     /* Orange action */
  --danger-red: #ef4444;         /* Rouge danger */
  --dark-gray: #1f2937;          /* Gris foncé texte */
  --light-gray: #f3f4f6;         /* Gris clair fond */
  --border-gray: #e5e7eb;        /* Gris bordure */
  --white: #ffffff;              /* Blanc */
  
  /* Typographie */
  --font-primary: "Inter", "Segoe UI", "Roboto", sans-serif;
  
  /* Espacements */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
  font-family: var(--font-primary);
  background-color: var(--light-gray);
  color: var(--dark-gray);
  line-height: 1.6;
  font-size: 1rem;
}

html {
  scroll-behavior: smooth;
}

/* ===== Typography ===== */

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: var(--spacing-md);
}

p {
  margin-bottom: var(--spacing-md);
}

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

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

/* ===== Responsive ===== */

@media (max-width: 768px) {
  h1 {
    font-size: 1.875rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }
}

/* ===== Scrollbar ===== */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--border-gray);
  border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--dark-gray);
}

/* ===== Animation ===== */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.fade-in {
  animation: fadeIn 0.3s ease-in-out;
}

.spinner {
  animation: spin 1s linear infinite;
}

.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}