/* ------------------------------------------------------------------
   calculer.css — l'estimateur de bassin.
   On dessine une coupe du bassin qui se remplit a mesure qu'on regle les
   curseurs : le visiteur voit son bassin avant d'en parler. Reprend les
   variables de site.css, n'en redefinit aucune.
   ------------------------------------------------------------------ */

.calc-page { padding: calc(var(--nav-h) + clamp(2rem, 6svh, 4rem)) 0 clamp(4rem, 10svh, 7rem); }
.calc-page > section { padding-inline: var(--gutter); }

.calc-tete { max-width: 46rem; }
.calc-tete .sur {
  font-family: var(--display); font-size: .72rem; letter-spacing: .2em;
  text-transform: uppercase; color: var(--eau); margin: 0 0 1rem;
  display: flex; align-items: center; gap: .65rem;
}
.calc-tete .sur::before { content: ""; width: 1.9rem; height: 1px; background: var(--eau-2); }
.calc-tete h1 {
  font-family: var(--display); font-weight: 800;
  font-size: clamp(2.1rem, 1.2rem + 4.4vw, 3.9rem);
  line-height: .98; letter-spacing: -.03em; margin: 0 0 1.1rem; text-wrap: balance;
}
.calc-tete h1 em { font-style: normal; color: var(--eau); }
.calc-tete .chapo { color: var(--ecume-60); margin: 0; max-width: 56ch; }

/* ---------- la coupe dessinee ---------- */
.coupe {
  margin: clamp(2rem, 5svh, 3rem) auto clamp(1.5rem, 4svh, 2.5rem);
  max-width: 44rem; border-radius: 12px; overflow: clip;
  border: 1px solid var(--ecume-12); background: var(--granit);
}
.coupe svg { display: block; width: 100%; height: auto; }
.coupe .terre  { fill: #2a3733; }
.coupe .berge  { fill: none; stroke: var(--ecume-30); stroke-width: 2; stroke-linejoin: round; }
.coupe .eau    { fill: rgba(111,163,156,.34); transition: d .4s var(--ease, ease); }
.coupe .ligne  { stroke: var(--eau); stroke-width: 2.5; fill: none; }
.coupe .cote   { stroke: var(--ecume-30); stroke-width: 1; stroke-dasharray: 4 4; }
.coupe text    { fill: var(--ecume-60); font-family: var(--display); font-size: 13px; }
.coupe .poisson { fill: var(--hi); opacity: .85; }
@media (prefers-reduced-motion: no-preference) {
  .coupe .poisson { animation: nage 9s ease-in-out infinite alternate; }
}
@keyframes nage { from { transform: translateX(-16px); } to { transform: translateX(18px); } }

/* ---------- les reglages ---------- */
.reglages {
  max-width: 44rem; margin: 0 auto; display: grid; gap: 1.4rem;
}
.reglage label {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  font-family: var(--display); font-size: .88rem; margin-bottom: .45rem;
}
.reglage label b { color: var(--eau); font-variant-numeric: tabular-nums; font-size: 1rem; }
.reglage input[type=range] {
  width: 100%; accent-color: var(--hi); height: 1.6rem; cursor: pointer;
}
.reglage input[type=range]:focus-visible { outline: 2px solid var(--eau); outline-offset: 3px; }
.reglage .aide { font-size: .8rem; color: var(--ecume-30); margin: .25rem 0 0; }

.choix { display: flex; flex-wrap: wrap; gap: .5rem; }
.choix input { position: absolute; opacity: 0; width: 0; height: 0; }
.choix label {
  display: block; padding: .6rem 1rem; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--ecume-12); background: var(--granit);
  font-family: var(--display); font-size: .82rem; margin: 0;
  transition: border-color .18s, color .18s;
}
.choix label:hover { border-color: var(--eau-2); }
.choix input:checked + label { border-color: var(--hi); color: var(--hi); }
.choix input:focus-visible + label { outline: 2px solid var(--eau); outline-offset: 3px; }

/* ---------- le resultat ---------- */
.resultat { max-width: 44rem; margin: clamp(2rem, 5svh, 3rem) auto 0; }
.resultat h2 {
  font-family: var(--display); font-weight: 700; font-size: 1.35rem;
  letter-spacing: -.018em; margin: 0 0 1rem;
}
.chiffres {
  display: grid; gap: 1px; background: var(--ecume-12);
  border: 1px solid var(--ecume-12); border-radius: 10px; overflow: clip;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
}
.chiffres div { background: var(--deep); padding: 1rem .95rem; }
.chiffres b {
  display: block; font-family: var(--display); font-weight: 700;
  font-size: 1.5rem; line-height: 1.1; font-variant-numeric: tabular-nums;
}
.chiffres span {
  display: block; font-size: .72rem; letter-spacing: .09em;
  text-transform: uppercase; color: var(--ecume-30); margin-top: .2rem;
}

.remarques { margin: 1.3rem 0 0; padding: 0; list-style: none; display: grid; gap: .55rem; }
.remarques li {
  padding: .65rem .85rem; border-radius: 8px; font-size: .92rem;
  border-left: 3px solid var(--eau-2); background: rgba(111,163,156,.07); color: var(--ecume-60);
}
.remarques li.attention { border-left-color: var(--hi); background: rgba(228,81,43,.08); }
.remarques li b { color: var(--ecume); }

.reserve {
  margin: 1.6rem 0 0; padding: .9rem 1rem; border: 1px dashed var(--ecume-12);
  border-radius: 8px; font-size: .88rem; color: var(--ecume-30);
}
.reserve b { color: var(--ecume-60); }
.calc-suite { margin-top: 1.6rem; display: flex; flex-wrap: wrap; gap: .6rem; }

@media (prefers-reduced-motion: reduce) {
  .coupe .eau { transition: none; }
  .choix label { transition: none; }
}