/* ==========================================================================
   BASE CSS — Pro Essentiel
   Réinitialisation légère et styles de base (typographie, liens, formulaires).
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background-color: var(--color-ivory);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-navy);
  line-height: var(--lh-tight);
  margin: 0 0 var(--space-2);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

::selection {
  background-color: var(--color-gold);
  color: var(--color-navy-dark);
}

p {
  margin: 0 0 var(--space-3);
}

ul, ol {
  margin: 0 0 var(--space-3);
  padding-left: 1.25em;
}

li {
  margin-bottom: var(--space-1);
}

a {
  color: var(--color-navy-light);
  text-decoration: underline;
  text-decoration-color: var(--color-gold);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-gold);
}

/* Focus visible clair et cohérent pour l'accessibilité clavier */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 2px;
}

/* Formulaires */
label {
  display: block;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

input,
select,
textarea {
  font-family: inherit;
  font-size: var(--fs-base);
  color: var(--color-text);
  width: 100%;
  padding: 0.75em 1em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
}

textarea {
  resize: vertical;
  min-height: 8rem;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* Utilitaire d'accessibilité : masque visuellement sans retirer du DOM */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -3rem;
  background: var(--color-navy);
  color: var(--color-white);
  padding: 0.75em 1.25em;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-2);
}

/* Respect des préférences de mouvement réduit */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}