/* ==========================================================================
   Base : reset, typographie, utilitaires, animations
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv11", "ss01";
}
img, svg, video, canvas { display: block; max-width: 100%; }
svg { flex-shrink: 0; }
button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
button:disabled { cursor: not-allowed; }
a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-family: var(--font-display); line-height: var(--lh-tight); letter-spacing: var(--tracking-tight); font-weight: var(--fw-semibold); }
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }
p { margin: 0; }
p + p { margin-top: var(--sp-3); }
ul, ol { margin: 0; padding: 0; }
hr { border: 0; border-top: 1px solid var(--border); margin: var(--sp-5) 0; }
code, kbd, samp, pre { font-family: var(--font-mono); font-size: .92em; }
code { background: var(--code-bg); padding: .1em .4em; border-radius: var(--r-xs); }
pre { background: var(--code-bg); padding: var(--sp-4); border-radius: var(--r-md); overflow: auto; }
kbd {
  display: inline-flex; align-items: center; justify-content: center; min-width: 20px; height: 20px;
  padding: 0 5px; border-radius: 5px; font-size: 11px; font-weight: var(--fw-semibold);
  color: var(--text-2); background: var(--surface); border: 1px solid var(--border); box-shadow: 0 1px 0 var(--border);
}
table { border-collapse: collapse; width: 100%; }
::selection { background: var(--accent-soft-2); color: var(--text); }
[hidden] { display: none !important; }

/* Focus visibles (clavier uniquement) */
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--r-xs); }

/* Barres de défilement discrètes */
* { scrollbar-width: thin; scrollbar-color: var(--scrollbar) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 10px; border: 3px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }

/* Transition des couleurs au changement de thème (classe posée brièvement par prefs.js) */
.theme-transition, .theme-transition *, .theme-transition *::before, .theme-transition *::after {
  transition: background-color var(--dur-3) var(--ease-out), border-color var(--dur-3) var(--ease-out),
              color var(--dur-3) var(--ease-out), fill var(--dur-3) var(--ease-out), stroke var(--dur-3) var(--ease-out) !important;
}

/* ---------- Utilitaires ---------- */
.sr-only { position: absolute !important; 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(--sp-4); top: -60px; z-index: 200; background: var(--accent); color: var(--accent-fg); padding: var(--sp-2) var(--sp-4); border-radius: var(--r-sm); transition: top var(--dur-2) var(--ease-out); }
.skip-link:focus { top: var(--sp-3); }
.muted { color: var(--text-2); }
.subtle { color: var(--text-3); }
.small { font-size: var(--fs-sm); }
.xsmall { font-size: var(--fs-xs); }
.mono { font-family: var(--font-mono); font-size: .92em; letter-spacing: 0; }
.num, .tabular { font-variant-numeric: tabular-nums; }
.nowrap { white-space: nowrap; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.strong { font-weight: var(--fw-semibold); }
.right { text-align: right; }
.center { text-align: center; }
.upper { text-transform: uppercase; letter-spacing: var(--tracking-wide); font-size: var(--fs-2xs); font-weight: var(--fw-semibold); }
.strike { text-decoration: line-through; color: var(--text-3); }
.text-success { color: var(--success-text); }
.text-danger { color: var(--danger-text); }
.text-warning { color: var(--warning-text); }
.text-accent { color: var(--accent-text); }
.row { display: flex; align-items: center; gap: var(--sp-3); }
.row-wrap { display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.col { display: flex; flex-direction: column; gap: var(--sp-3); }
.stack > * + * { margin-top: var(--sp-4); }
.stack-sm > * + * { margin-top: var(--sp-2); }
.stack-lg > * + * { margin-top: var(--sp-6); }
.grow { flex: 1 1 auto; min-width: 0; }
.gap-1 { gap: var(--sp-1); } .gap-2 { gap: var(--sp-2); } .gap-4 { gap: var(--sp-4); } .gap-6 { gap: var(--sp-6); }
.mt-0 { margin-top: 0 !important; } .mt-2 { margin-top: var(--sp-2); } .mt-4 { margin-top: var(--sp-4); } .mt-6 { margin-top: var(--sp-6); }
.mb-2 { margin-bottom: var(--sp-2); } .mb-4 { margin-bottom: var(--sp-4); }
.ml-auto { margin-left: auto; }
.w-full { width: 100%; }
.grid { display: grid; gap: var(--sp-5); }
.grid-2 { display: grid; gap: var(--sp-5); grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { display: grid; gap: var(--sp-5); grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { display: grid; gap: var(--sp-5); grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-auto { display: grid; gap: var(--sp-5); grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-all { grid-column: 1 / -1; }
@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .span-3 { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .span-2, .span-3 { grid-column: auto; }
  .hide-sm { display: none !important; }
}
@media (min-width: 721px) { .show-sm { display: none !important; } }

/* ---------- Icônes ---------- */
.icon { width: 18px; height: 18px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; display: inline-block; vertical-align: middle; }
.icon-sm { width: 15px; height: 15px; }
.icon-lg { width: 22px; height: 22px; }
.icon-xl { width: 28px; height: 28px; }

/* ---------- Animations ---------- */
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes fade-out { to { opacity: 0; } }
@keyframes rise-in { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes rise-in-lg { from { opacity: 0; transform: translateY(22px) scale(.985); } to { opacity: 1; transform: none; } }
@keyframes drop-in { from { opacity: 0; transform: translateY(-8px) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes scale-in { from { opacity: 0; transform: scale(.95); } to { opacity: 1; transform: none; } }
@keyframes pop { 0% { transform: scale(1); } 40% { transform: scale(1.18); } 100% { transform: scale(1); } }
@keyframes slide-in-right { from { transform: translateX(100%); } to { transform: none; } }
@keyframes slide-out-right { to { transform: translateX(100%); } }
@keyframes slide-in-up { from { transform: translateY(100%); } to { transform: none; } }
@keyframes shimmer { from { background-position: -400px 0; } to { background-position: 400px 0; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse-ring { 0% { box-shadow: 0 0 0 0 var(--accent-glow); } 70% { box-shadow: 0 0 0 10px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }
@keyframes pulse-dot { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .55; transform: scale(.82); } }
@keyframes shake { 10%, 90% { transform: translateX(-1px); } 20%, 80% { transform: translateX(2px); } 30%, 50%, 70% { transform: translateX(-4px); } 40%, 60% { transform: translateX(4px); } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes progress-shrink { from { transform: scaleX(1); } to { transform: scaleX(0); } }
@keyframes gradient-pan { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }

/* Apparition échelonnée : ajouter .reveal aux éléments ; --i est posé par JS (dom.stagger) ou inline */
.reveal { animation: rise-in var(--dur-4) var(--ease-out) both; animation-delay: calc(var(--i, 0) * var(--stagger)); }
.reveal-lg { animation: rise-in-lg var(--dur-4) var(--ease-emph) both; animation-delay: calc(var(--i, 0) * var(--stagger)); }
.fade { animation: fade-in var(--dur-3) var(--ease-out) both; }
.shake { animation: shake .45s var(--ease-in-out); }

/* Mouvement réduit : neutralise toute animation */
:root[data-motion="reduced"] *, :root[data-motion="reduced"] *::before, :root[data-motion="reduced"] *::after {
  animation-duration: 1ms !important; animation-delay: 0ms !important; animation-iteration-count: 1 !important;
  transition-duration: 1ms !important; scroll-behavior: auto !important;
}
@media (prefers-reduced-motion: reduce) {
  :root:not([data-motion="full"]) *, :root:not([data-motion="full"]) *::before, :root:not([data-motion="full"]) *::after {
    animation-duration: 1ms !important; animation-delay: 0ms !important; animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

/* Transitions entre pages (navigations same-origin, navigateurs compatibles) */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: fade-out var(--dur-2) var(--ease-in) both; }
::view-transition-new(root) { animation: fade-in var(--dur-3) var(--ease-out) both; }
.sidebar { view-transition-name: sidebar; }
.topbar { view-transition-name: topbar; }
::view-transition-old(sidebar), ::view-transition-new(sidebar),
::view-transition-old(topbar), ::view-transition-new(topbar) { animation: none; mix-blend-mode: normal; }
::view-transition-new(main-content) { animation: rise-in var(--dur-3) var(--ease-out) both; }
::view-transition-old(main-content) { animation: fade-out var(--dur-1) var(--ease-in) both; }
.page-main { view-transition-name: main-content; }
@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}

/* Forced colors (Windows contraste élevé) */
@media (forced-colors: active) {
  .btn, .input, .select, .card, .badge { border: 1px solid CanvasText; }
  .switch input:checked + .switch-track { background: Highlight; }
}