/* Calcul de surface : styles propres à l'outil. */
.o-surface-bloc { padding: 4px 0 18px; }
.o-surface-bloc + .o-surface-bloc { padding-top: 18px; border-top: 1px solid var(--bord); }
.o-surface-bloc h2 { margin: 0 0 12px; font-size: 1.2rem; }
.o-surface-formes, .o-surface-modes { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.o-surface-formes .btn, .o-surface-modes .btn { min-height: 40px; border-radius: 999px; font-weight: 600; }
.atelier .o-surface-formes .btn[aria-pressed="true"], .atelier .o-surface-modes .btn[aria-pressed="true"] { background: var(--marque); border-color: var(--marque); color: var(--sur-marque); }
.o-surface-options { grid-template-columns: repeat(auto-fill, minmax(200px, 280px)); margin-bottom: 12px; }
.o-surface-champs, .o-surface-mat { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.o-surface-champs input, .o-surface-mat input { font: 600 1.1rem var(--mono); text-align: right; }
.o-surface input[aria-invalid="true"] { border-color: var(--erreur-texte); outline: 1px solid var(--erreur-texte); }
.o-surface input:focus-visible, .o-surface select:focus-visible { outline: 3px solid var(--marque); outline-offset: 0; }
.o-surface .o-surface-erreur { margin: 10px 0 0; color: var(--erreur-texte); font-size: .95rem; }
.o-surface-erreur:empty { display: none; }
.o-surface-duo { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 16px; align-items: start; margin-top: 14px; }
.o-surface-resultat { display: flex; flex-direction: column; gap: 2px; margin-top: 14px; padding: 12px 14px; border-radius: var(--rayon-petit); background: var(--ok-fond); color: var(--ok-texte); min-width: 0; }
.o-surface-duo .o-surface-resultat { margin-top: 0; }
.o-surface-resultat > span { font-size: .85rem; font-weight: 600; }
.o-surface-resultat output { font: 700 1.7rem/1.3 var(--mono); overflow-wrap: anywhere; }
.o-surface .o-surface-formule { margin: 6px 0 0; font: .95rem/1.55 var(--mono); overflow-wrap: anywhere; }
.o-surface-formule:empty { display: none; }
.o-surface-conv { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 3px 12px; margin: 10px 0 0; font-size: .95rem; }
.o-surface-conv:empty { display: none; }
.o-surface-conv dt { font-weight: 600; }
.o-surface-conv dd { margin: 0; font-family: var(--mono); overflow-wrap: anywhere; }
.o-surface-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; }
.o-surface-resultat .tirage-message { color: var(--ok-texte); }
.o-surface-figure { margin: 0; padding: 10px; border-radius: var(--rayon-petit); background: var(--surface-2); }
.o-surface-figure svg { display: block; width: 100%; height: auto; max-height: 260px; overflow: visible; }
.o-surface-figure figcaption { margin-top: 6px; font-size: .85rem; color: var(--texte-2); }
.o-surface-svg-forme { fill: var(--marque); fill-opacity: .18; stroke: var(--marque); stroke-width: 2; stroke-linejoin: round; }
.o-surface-svg-cote { stroke: var(--texte); stroke-width: 1.5; }
.o-surface-svg-tiret { stroke-dasharray: 5 4; }
.o-surface-svg-texte { fill: var(--texte); font: 600 13px var(--mono); dominant-baseline: central; }
.o-surface-pieces { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.o-surface-piece { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr) auto minmax(110px, auto) auto; gap: 8px 10px; align-items: end; padding: 10px; border: 1px solid var(--bord); border-radius: var(--rayon-petit); background: var(--surface); }
.o-surface-piece label:not(.case) { display: flex; flex-direction: column; gap: 4px; font-size: .85rem; color: var(--texte-2); min-width: 0; }
.o-surface-p-dim input { font-family: var(--mono); text-align: right; }
.o-surface-p-desc { grid-column: span 2; align-self: center; font: .9rem/1.4 var(--mono); overflow-wrap: anywhere; }
.o-surface-piece label.case { display: flex; align-items: center; gap: 6px; min-height: 42px; font-size: .9rem; white-space: nowrap; }
.o-surface-piece input[type="checkbox"] { width: 20px; height: 20px; accent-color: var(--marque); }
.o-surface-p-aire { align-self: end; padding-bottom: 10px; font: 700 1rem var(--mono); text-align: right; overflow-wrap: anywhere; }
.o-surface-deduite { border-style: dashed; }
.o-surface-deduite .o-surface-p-aire { color: var(--erreur-texte); }
.o-surface-p-suppr { min-height: 42px; }
.o-surface .o-surface-vide { margin: 0; color: var(--texte-2); }
.o-surface-notes { margin: 6px 0 0; padding-left: 1.2em; font-size: .95rem; line-height: 1.55; overflow-wrap: anywhere; }
.o-surface-notes:empty { display: none; }
.o-surface .o-surface-aide { grid-column: 1 / -1; margin: 0; font-size: .85rem; color: var(--texte-2); }
.o-surface .o-surface-note { margin: 10px 0 0; font-size: .88rem; color: var(--texte-2); }
@media (max-width: 760px) {
  .o-surface-duo { grid-template-columns: 1fr; }
  .o-surface-piece { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .o-surface-p-nom, .o-surface-p-desc { grid-column: 1 / -1; }
  .o-surface-p-aire { text-align: left; }
}
@media (max-width: 400px) {
  .o-surface-champs, .o-surface-mat { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}
.o-surface-mat label { justify-content: space-between; }