/* Calculatrice : styles propres à l'outil. */
.o-calculatrice { --o-calc-gap: 8px; }
.o-calculatrice-machine { max-width: 420px; margin: 0 auto; }
.o-calculatrice-ecran {
  display: flex; flex-direction: column; gap: 2px; padding: 10px 14px 12px; border-radius: var(--rayon); background: var(--surface-2);
  border: 1px solid var(--bord); font-variant-numeric: tabular-nums;
}
.o-calculatrice-indicateurs { display: flex; gap: 10px; min-height: 1.1em; font: 700 .72rem/1.1 var(--mono); letter-spacing: .06em; color: var(--texte-2); }
.o-calculatrice-indicateurs [hidden] { display: none; }
.o-calculatrice-expression {
  min-height: 1.6em; overflow-x: auto; white-space: nowrap; text-align: right; font: 500 1.1rem/1.6 var(--mono); color: var(--texte-2);
  scrollbar-width: thin;
}
.o-calculatrice-fantome { opacity: .45; }
.o-calculatrice-ligne-resultat { display: flex; justify-content: flex-end; min-height: 3rem; align-items: center; overflow: hidden; }
.o-calculatrice-apercu, .o-calculatrice-resultat { font: 700 2.4rem/1.2 var(--mono); text-align: right; overflow-wrap: anywhere; }
.o-calculatrice-apercu { color: var(--texte-2); opacity: .8; }
.o-calculatrice-apercu:empty, .o-calculatrice-resultat:empty { display: none; }
.o-calculatrice-resultat:not(:empty) + .o-calculatrice-apercu { display: none; }
.o-calculatrice-resultat { color: var(--texte); }
.o-calculatrice-ligne-resultat[data-long="1"] :is(.o-calculatrice-apercu, .o-calculatrice-resultat) { font-size: 1.8rem; }
.o-calculatrice-ligne-resultat[data-long="2"] :is(.o-calculatrice-apercu, .o-calculatrice-resultat) { font-size: 1.3rem; }
.o-calculatrice .o-calculatrice-resultat.o-calculatrice-erreur { font: 600 1.05rem/1.4 var(--police); color: var(--erreur-texte); }

.o-calculatrice-barre { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 12px 0; }
.o-calculatrice-barre .btn { min-height: 42px; }
.o-calculatrice-barre [data-sci-bascule]::after { content: "▾"; margin-left: 2px; font-size: .8em; }
.o-calculatrice-barre [data-sci-bascule][aria-expanded="true"]::after { content: "▴"; }

.o-calculatrice-claviers { display: flex; flex-direction: column; gap: 12px; }
.o-calculatrice-grille { display: grid; gap: var(--o-calc-gap); }
.o-calculatrice-grille-base { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.o-calculatrice-grille-sci { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.o-calculatrice-touche {
  display: grid; place-items: center; min-height: 60px; padding: 4px; border: 1px solid var(--bord); border-radius: var(--rayon-petit);
  background: var(--surface); color: var(--texte); font: 600 1.45rem/1 var(--police); cursor: pointer; touch-action: manipulation;
  user-select: none; -webkit-user-select: none; transition: background-color .08s, transform .08s;
}
.o-calculatrice-touche sup { margin-left: 1px; font-size: .62em; line-height: 0; }
.o-calculatrice-touche:hover { background: var(--surface-2); }
.o-calculatrice-touche:active, .o-calculatrice-touche.o-calculatrice-appui { background: var(--bord); transform: scale(.97); }
.o-calculatrice-touche:focus-visible { outline: 3px solid var(--marque); outline-offset: 2px; }
.o-calculatrice-fonction, .o-calculatrice-operateur { background: var(--surface-2); }
.o-calculatrice-operateur { color: var(--marque); font-size: 1.7rem; }
.o-calculatrice-effacer { color: var(--erreur-texte); background: var(--surface-2); }
.o-calculatrice-egal { background: var(--marque); border-color: var(--marque); color: var(--sur-marque); font-size: 1.7rem; }
.o-calculatrice-egal:hover, .o-calculatrice-egal:active, .o-calculatrice-egal.o-calculatrice-appui { background: var(--marque-fort); border-color: var(--marque-fort); }
.o-calculatrice-grille-sci .o-calculatrice-touche { min-height: 48px; font-size: 1.05rem; background: var(--surface-2); }
.o-calculatrice-grille-sci .o-calculatrice-touche:active, .o-calculatrice-grille-sci .o-calculatrice-appui { background: var(--bord); }
.o-calculatrice-grille-sci .o-calculatrice-memoire { font-size: .95rem; color: var(--texte-2); }
.o-calculatrice-angle { display: flex; gap: 8px; margin-bottom: 8px; }
.o-calculatrice-angle .btn { flex: 1; min-height: 40px; border-radius: 999px; }
.atelier .o-calculatrice-angle .btn[aria-pressed="true"] { background: var(--marque); border-color: var(--marque); color: var(--sur-marque); }

/* Mode scientifique : ouvert d'office sur grand écran, fermé sur téléphone, sauf choix enregistré. */
.o-calculatrice[data-sci="ferme"] .o-calculatrice-sci { display: none; }
@media (max-width: 759px) { .o-calculatrice[data-sci="auto"] .o-calculatrice-sci { display: none; } }
@media (min-width: 760px) {
  .o-calculatrice:is([data-sci="ouvert"], [data-sci="auto"]) .o-calculatrice-machine { max-width: 860px; }
  .o-calculatrice:is([data-sci="ouvert"], [data-sci="auto"]) .o-calculatrice-claviers { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; align-items: end; }
}

.o-calculatrice-historique { max-width: 860px; margin: 22px auto 0; padding-top: 14px; border-top: 1px solid var(--bord); }
.o-calculatrice-historique:focus { outline: none; }
.o-calculatrice-histo-tete { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
.o-calculatrice-histo-tete h2 { margin: 0; font-size: 1.1rem; }
.o-calculatrice-histo-tete [hidden] { display: none; }
.o-calculatrice-historique .tirage-astuce { display: block; margin-top: 8px; }
.o-calculatrice-historique .tirage-astuce[hidden] { display: none; }
.o-calculatrice-histo-liste { margin: 8px 0 0; padding: 0; list-style: none; max-height: 330px; overflow-y: auto; }
.o-calculatrice-histo-liste button {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 2px 12px; width: 100%; min-height: 44px;
  padding: 8px 10px; border: 0; border-bottom: 1px solid var(--bord); background: none; color: var(--texte); font: 500 1rem/1.4 var(--mono);
  text-align: left; cursor: pointer;
}
.o-calculatrice-histo-liste button:hover { background: var(--surface-2); }
.o-calculatrice-histo-liste button:focus-visible { outline: 3px solid var(--marque); outline-offset: -3px; }
.o-calculatrice-histo-liste span { color: var(--texte-2); overflow-wrap: anywhere; }
.o-calculatrice-histo-liste strong { margin-left: auto; overflow-wrap: anywhere; }
.o-calculatrice .o-calculatrice-astuce { display: block; max-width: 860px; margin: 14px auto 0; }

@media (max-width: 400px) {
  .o-calculatrice { --o-calc-gap: 6px; }
  .o-calculatrice-barre .btn { flex: 1 1 0; padding-inline: 8px; font-size: .88rem; }
  .o-calculatrice-touche { min-height: 56px; font-size: 1.35rem; }
  .o-calculatrice-grille-sci .o-calculatrice-touche { min-height: 44px; font-size: .98rem; }
  .o-calculatrice-apercu, .o-calculatrice-resultat { font-size: 2rem; }
}
@media (prefers-reduced-motion: reduce) { .o-calculatrice-touche { transition: none; } .o-calculatrice-touche:active, .o-calculatrice-appui { transform: none; } }