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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--color-bg);
  transition: background-color 250ms ease;
}

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

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

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

ul, ol {
  list-style: none;
}

#root {
  display: contents;
}

/* ── View Transitions API ───────────────────────────────────────────────── */

/* Transitions de page (navigation SPA) */
::view-transition-old(root) {
  animation: vt-page-out 180ms cubic-bezier(0.4, 0, 1, 1) both;
}
::view-transition-new(root) {
  animation: vt-page-in 320ms cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes vt-page-out {
  to { opacity: 0; transform: translateY(-6px); }
}
@keyframes vt-page-in {
  from { opacity: 0; transform: translateY(10px); }
}

/* Transition de thème : crossfade pur, pas de déplacement */
[data-transitioning-theme]::view-transition-old(root) {
  animation: vt-theme-out 200ms ease both;
}
[data-transitioning-theme]::view-transition-new(root) {
  animation: vt-theme-in 280ms ease both;
}

@keyframes vt-theme-out {
  to { opacity: 0; }
}
@keyframes vt-theme-in {
  from { opacity: 0; }
}