/* =============================================================================
   BASE — Reset, typographie, structure, accessibilité
   ============================================================================= */

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@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;
  }
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

/* Skip link accessibilité */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: var(--color-on-primary);
  z-index: 9999;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: 1rem;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Conteneurs */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.container--narrow {
  max-width: 800px;
}

/* Sections */
.section {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  scroll-margin-top: 80px;
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
  }
}

.section--alt {
  background-color: var(--color-surface-alt);
}

.section--surface {
  background-color: var(--color-surface);
}

/* Grilles */
.grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 640px) {
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Typographie globale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: var(--leading-tight);
  color: var(--color-text);
  font-weight: var(--weight-bold);
}

p {
  color: var(--color-text);
  line-height: var(--leading-relaxed);
}

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

.text-center {
  text-align: center;
}

/* Boutons communs */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: var(--weight-bold);
  font-size: var(--text-base);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast), background-color var(--transition-fast);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-on-accent);
  border: 1px solid transparent;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.12);
}
.btn--primary:hover {
  filter: brightness(0.94);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn--primary:active {
  transform: translateY(0);
}

.btn--secondary {
  background-color: transparent;
  color: currentColor;
  border: 1px solid currentColor;
}
.btn--secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: var(--text-lg);
}

/* Animations d'apparition légère (reveal)
   - Par défaut (sans JS, print, SEO) : tout est visible.
   - Avec JS (.has-js) : apparition progressive douce au scroll. */
.reveal {
  opacity: 1;
  transform: none;
}

html.has-js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

/* Les pages vitrines LC (Sports & Forma Pro) restent lisibles immédiatement,
   y compris sans défilement. */
html.has-js .page-lc-sports-connexion .reveal,
html.has-js .page-lc-forma-pro-securite .reveal {
  opacity: 1;
  transform: none;
}

html.has-js .reveal.is-revealed {
  opacity: 1;
  transform: none;
}