/* ==========================================================
   Mistral — Outils techniques — feuille de style partagée
   Utilisée par : /outils/index.html, /outils/section-cable.html,
   /outils/puissance-installation.html, et tout futur outil.
   ========================================================== */

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

:root {
  --noir: #111111;
  --noir-card: #181818;
  --bleu: #0057FF;
  --bleu-clair: rgba(0, 87, 255, 0.08);
  --blanc: #FFFFFF;
  --gris: #888888;
  --gris-clair: #CCCCCC;
  --gris-fond: #FAFAFA;
  --texte: #2A2A2A;
  --ligne: rgba(0, 0, 0, 0.08);
  --ligne-sombre: rgba(255, 255, 255, 0.1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--gris-fond);
  color: var(--texte);
  font-family: 'DM Sans', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* ── NAV ── */
nav.outils-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--ligne);
  padding: 0 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo { display: flex; flex-direction: column; align-items: flex-start; }
.nav-logo-main { font-family: 'Playfair Display', serif; font-weight: 700; font-size: 1.05rem; letter-spacing: 0.14em; color: var(--noir); line-height: 1; }
.nav-logo-sub { font-size: 0.6rem; font-weight: 500; letter-spacing: 0.28em; color: var(--gris); text-transform: uppercase; margin-top: 2px; }

.nav-links { list-style: none; display: flex; align-items: center; gap: 2rem; }
.nav-links a { font-size: 0.85rem; font-weight: 500; color: var(--texte); transition: color 0.2s ease; }
.nav-links a:hover { color: var(--bleu); }
.nav-links a.active { color: var(--bleu); font-weight: 600; }

@media (max-width: 700px) {
  nav.outils-nav { padding: 0 1.25rem; }
  .nav-links li:not(:last-child) { display: none; }
}

/* ── HERO (bandeau sombre en tête de chaque page) ── */
.tool-hero {
  background: var(--noir);
  padding: 64px 2.5rem 48px;
}
.tool-hero-inner { max-width: 920px; margin: 0 auto; }
.tool-eyebrow {
  display: flex; align-items: center; gap: 10px; margin-bottom: 20px;
}
.tool-eyebrow-line { width: 24px; height: 1px; background: var(--bleu); }
.tool-eyebrow-text { font-size: 11px; font-weight: 600; letter-spacing: 0.25em; text-transform: uppercase; color: var(--bleu); }
.tool-title {
  font-family: 'Playfair Display', serif; font-weight: 700;
  font-size: clamp(26px, 4vw, 42px); color: var(--blanc); line-height: 1.2; margin-bottom: 14px;
}
.tool-intro { font-size: 15.5px; color: rgba(255,255,255,0.55); max-width: 620px; line-height: 1.7; }
.tool-back { display: inline-block; margin-top: 24px; font-size: 12.5px; color: rgba(255,255,255,0.45); }
.tool-back:hover { color: var(--bleu-clair); }

/* ── LAYOUT DEUX COLONNES (formulaire / résultat) ── */
.tool-body {
  max-width: 920px; margin: 0 auto; padding: 48px 2.5rem 96px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start;
}
@media (max-width: 860px) {
  .tool-body { grid-template-columns: 1fr; padding: 40px 1.25rem 72px; gap: 28px; }
}

.panel {
  background: var(--blanc); border: 1px solid var(--ligne); border-radius: 4px; padding: 32px;
}
.panel-title { font-family: 'Playfair Display', serif; font-size: 18px; font-weight: 700; color: var(--noir); margin-bottom: 22px; }

/* ── FORMULAIRE ── */
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 12.5px; font-weight: 600; color: var(--texte); margin-bottom: 7px; letter-spacing: 0.01em; }
.field .field-hint { display: block; font-size: 11.5px; color: var(--gris); margin-top: 5px; }

.field input[type="number"],
.field input[type="text"],
.field select {
  width: 100%; padding: 11px 13px; font-family: 'DM Sans', sans-serif; font-size: 14.5px;
  border: 1px solid var(--gris-clair); border-radius: 3px; background: var(--blanc); color: var(--texte);
  transition: border-color 0.2s ease;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--bleu); }
.field input.invalide { border-color: #C0392B; }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 500px) { .field-row { grid-template-columns: 1fr; } }

.toggle-group { display: flex; gap: 8px; }
.toggle-btn {
  flex: 1; padding: 10px; text-align: center; font-size: 13.5px; font-weight: 600;
  border: 1px solid var(--gris-clair); border-radius: 3px; background: var(--blanc); color: var(--texte); cursor: pointer;
  transition: all 0.15s ease;
}
.toggle-btn.actif { background: var(--noir); border-color: var(--noir); color: var(--blanc); }

.erreurs-box { background: rgba(192,57,43,0.06); border: 1px solid rgba(192,57,43,0.25); border-radius: 3px; padding: 14px 16px; margin-top: 8px; }
.erreurs-box p { font-size: 13px; color: #C0392B; margin: 2px 0; }

/* ── PANNEAU RÉSULTAT (fond sombre, chiffres en avant) ── */
.result-panel {
  background: var(--noir); border-radius: 4px; padding: 32px; position: sticky; top: 92px;
}
.result-label { font-size: 10.5px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase; color: var(--bleu); margin-bottom: 6px; }
.result-value {
  font-family: 'JetBrains Mono', monospace; font-weight: 700; color: var(--blanc);
  font-size: clamp(32px, 5vw, 44px); line-height: 1.1; margin-bottom: 4px;
}
.result-value .unit { font-family: 'Playfair Display', serif; font-style: italic; font-size: 0.5em; color: rgba(255,255,255,0.5); margin-left: 6px; }
.result-sub { font-size: 12.5px; color: rgba(255,255,255,0.45); margin-bottom: 22px; }

.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 22px 0; }
.result-item { border-top: 1px solid var(--ligne-sombre); padding-top: 12px; }
.result-item .k { font-size: 10.5px; color: rgba(255,255,255,0.4); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 4px; }
.result-item .v { font-family: 'JetBrains Mono', monospace; font-size: 17px; color: var(--blanc); font-weight: 700; }

.result-list { margin: 22px 0; }
.result-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; border-top: 1px solid var(--ligne-sombre); padding: 12px 0; }
.result-row .k { font-size: 12.5px; color: rgba(255,255,255,0.55); }
.result-row .v { font-family: 'JetBrains Mono', monospace; font-size: 14.5px; color: var(--blanc); font-weight: 700; text-align: right; white-space: nowrap; }

.result-explication {
  font-size: 13.5px; color: rgba(255,255,255,0.6); line-height: 1.75;
  border-top: 1px solid var(--ligne-sombre); padding-top: 18px; margin-top: 18px;
}
.result-explication strong { color: var(--blanc); }

.result-placeholder { color: rgba(255,255,255,0.35); font-size: 13.5px; text-align: center; padding: 40px 10px; }

/* ── BOÎTE HYPOTHÈSES / LIMITES ── */
.hypotheses-box {
  border-left: 3px solid var(--bleu); background: var(--bleu-clair); border-radius: 0 3px 3px 0;
  padding: 16px 20px; margin-top: 20px;
}
.hypotheses-box .titre { font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--bleu); margin-bottom: 8px; }
.hypotheses-box ul { padding-left: 18px; }
.hypotheses-box li { font-size: 13px; color: var(--texte); line-height: 1.6; }

.disclaimer-box {
  border: 1px solid var(--ligne); background: var(--blanc); border-radius: 3px;
  padding: 16px 20px; margin-top: 16px; display: flex; gap: 12px; align-items: flex-start;
}
.disclaimer-box .icone { font-size: 16px; line-height: 1; margin-top: 1px; }
.disclaimer-box p { font-size: 12.5px; color: var(--gris); line-height: 1.6; }

/* ── TABLEAU ÉQUIPEMENTS (outil puissance) ── */
.eq-table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.eq-table th { text-align: left; font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gris); padding: 0 8px 10px; font-weight: 600; }
.eq-table td { padding: 6px 8px; vertical-align: middle; }
.eq-table input { width: 100%; padding: 8px 9px; font-size: 13.5px; border: 1px solid var(--gris-clair); border-radius: 3px; font-family: 'DM Sans', sans-serif; }
.eq-table input:focus { outline: none; border-color: var(--bleu); }
.eq-table .col-total { font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--texte); white-space: nowrap; text-align: right; padding-right: 4px; }
.eq-table .col-suppr { width: 34px; text-align: center; }
.btn-suppr {
  width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--gris-clair); background: var(--blanc);
  color: var(--gris); cursor: pointer; font-size: 14px; line-height: 1; display: inline-flex; align-items: center; justify-content: center;
  transition: all 0.15s ease;
}
.btn-suppr:hover { border-color: #C0392B; color: #C0392B; }

@media (max-width: 560px) {
  .eq-table thead { display: none; }
  .eq-table tr { display: grid; grid-template-columns: 1fr; gap: 6px; padding: 12px 0; border-bottom: 1px solid var(--ligne); }
  .eq-table td { padding: 0; }
  .eq-table .col-total { text-align: left; font-size: 13px; color: var(--gris); }
}

/* ── BOUTONS ── */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--bleu); color: var(--blanc); border: none; border-radius: 3px;
  padding: 13px 26px; font-size: 13.5px; font-weight: 600; letter-spacing: 0.02em; cursor: pointer;
  transition: background 0.2s ease; text-decoration: none;
}
.btn-primary:hover { background: #0044CC; }
.btn-primary:disabled { background: var(--gris-clair); cursor: not-allowed; }

.btn-ligne {
  display: inline-flex; align-items: center; gap: 8px; background: transparent; border: 1px dashed var(--gris-clair);
  color: var(--texte); border-radius: 3px; padding: 11px 18px; font-size: 13px; font-weight: 600; cursor: pointer; width: 100%;
  justify-content: center; transition: border-color 0.2s ease;
}
.btn-ligne:hover { border-color: var(--bleu); color: var(--bleu); }

/* ── PAGE HUB (index des outils) ── */
/* ── OUTIL SIMPLIFIÉ (façon Victron Toolkit) — colonne étroite, mobile-first ── */
.simple-tool { max-width: 480px; margin: -28px auto 0; padding: 0 1.5rem 96px; position: relative; z-index: 2; }

.chute-table { width: 100%; border-collapse: collapse; margin: 18px 0 4px; background: var(--blanc); border: 1px solid var(--ligne); border-radius: 4px; overflow: hidden; }
.chute-table th { text-align: left; font-size: 10px; letter-spacing: 0.07em; text-transform: uppercase; color: var(--gris); padding: 10px 12px; background: var(--gris-fond); font-weight: 600; }
.chute-table th:not(:first-child), .chute-table td:not(:first-child) { text-align: right; }
.chute-table td { padding: 10px 12px; font-family: 'JetBrains Mono', monospace; font-size: 13.5px; color: var(--texte); border-top: 1px solid var(--ligne); }
.chute-table tr.recommandee td { background: var(--bleu-clair); font-weight: 700; color: var(--noir); border-top: 1px solid rgba(0,87,255,0.25); }
.badge-reco { display: inline-block; font-family: 'DM Sans', sans-serif; font-size: 9px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--bleu); background: rgba(0,87,255,0.12); border-radius: 999px; padding: 2px 8px; margin-left: 6px; vertical-align: middle; }

.hypotheses-discretes { font-size: 11.5px; color: var(--gris); line-height: 1.6; margin: 10px 2px 0; }

details.avances { margin-top: 22px; border: 1px solid var(--ligne); border-radius: 4px; background: var(--blanc); }
details.avances summary {
  cursor: pointer; padding: 14px 18px; font-size: 13px; font-weight: 600; color: var(--texte);
  list-style: none; display: flex; align-items: center; justify-content: space-between;
}
details.avances summary::-webkit-details-marker { display: none; }
details.avances summary::after {
  content: '+'; font-size: 18px; color: var(--gris); font-weight: 400; transition: transform 0.2s ease;
}
details.avances[open] summary::after { transform: rotate(45deg); }
details.avances[open] summary { border-bottom: 1px solid var(--ligne); }
.avances-contenu { padding: 18px; }
.avances-contenu .field:last-child { margin-bottom: 0; }

@media (max-width: 500px) {
  .simple-tool { padding: 0 1.1rem 72px; }
}

.tools-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 920px; margin: -28px auto 0; padding: 0 2.5rem 96px; position: relative; z-index: 2; }
@media (max-width: 760px) { .tools-grid { grid-template-columns: 1fr; padding: 0 1.25rem 72px; } }

.tool-card {
  background: var(--blanc); border: 1px solid var(--ligne); border-radius: 4px; padding: 30px;
  display: flex; flex-direction: column; transition: border-color 0.2s ease, transform 0.2s ease;
}
.tool-card:hover { border-color: var(--bleu); transform: translateY(-2px); }
.tool-card .num { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--bleu); margin-bottom: 14px; }
.tool-card h3 { font-family: 'Playfair Display', serif; font-size: 20px; font-weight: 700; color: var(--noir); margin-bottom: 10px; }
.tool-card p { font-size: 13.5px; color: var(--gris); line-height: 1.6; margin-bottom: 20px; flex-grow: 1; }
.tool-card .cta { font-size: 12.5px; font-weight: 600; color: var(--bleu); }

.tool-card.a-venir { opacity: 0.55; cursor: default; }
.tool-card.a-venir:hover { border-color: var(--ligne); transform: none; }
.tool-card.a-venir .cta { color: var(--gris); }

/* ── FOOTER (repris de l'identité du site) ── */
footer.outils-footer { background: var(--noir); padding: 40px 2.5rem; text-align: center; }
footer.outils-footer p { font-size: 12px; color: rgba(255,255,255,0.35); }
footer.outils-footer a { color: var(--bleu); }
/* ── HAMBURGER (bouton, dans le <ul class="nav-links"> existant) ── */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: none; background: transparent;
  cursor: pointer; position: relative; padding: 0;
}
.nav-toggle-bar {
  position: absolute; left: 9px; right: 9px; height: 2px;
  background: var(--noir);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle-bar:nth-child(1) { top: 14px; }
.nav-toggle-bar:nth-child(2) { top: 20px; }
.nav-toggle-bar:nth-child(3) { top: 26px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ── PANNEAU MENU MOBILE ── */
.mobile-menu-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,0.45);
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  z-index: 190;
}
.mobile-menu-backdrop.actif { opacity: 1; visibility: visible; }

.mobile-menu {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: min(320px, 84vw);
  background: var(--noir);
  z-index: 200;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex; flex-direction: column;
  padding: 1.25rem 0 0;
  overflow-y: auto;
}
.mobile-menu.actif { transform: translateX(0); }

.mobile-menu-close {
  align-self: flex-end;
  width: 42px; height: 42px;
  border: none; background: transparent; color: var(--blanc);
  font-size: 24px; line-height: 1; cursor: pointer; margin: 0 0.75rem 0.5rem 0;
}

.mobile-menu-list { list-style: none; margin-top: 0.5rem; }
.mobile-menu-list > li { border-top: 1px solid rgba(255,255,255,0.08); }
.mobile-menu-list > li:first-child { border-top: none; }

.mobile-menu-list a,
.mobile-menu-sub-toggle {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 1rem 1.5rem;
  font-size: 14px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--blanc); background: transparent; border: none; cursor: pointer;
  font-family: 'DM Sans', Arial, sans-serif; text-align: left;
}
.mobile-menu-sub-toggle .chevron { font-size: 11px; color: var(--gris); transition: transform 0.25s ease; }
.mobile-menu-sub-toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }

.mobile-submenu {
  list-style: none; max-height: 0; overflow: hidden;
  transition: max-height 0.3s ease;
  background: rgba(255,255,255,0.03);
}
.mobile-submenu.ouvert { max-height: 420px; }
.mobile-submenu a {
  padding: 0.7rem 1.5rem 0.7rem 2.25rem;
  font-size: 12.5px; text-transform: none; letter-spacing: 0.01em;
  color: rgba(255,255,255,0.62);
}
.mobile-submenu .a-venir {
  padding: 0.7rem 1.5rem 0.7rem 2.25rem;
  font-size: 12.5px; color: rgba(255,255,255,0.3);
  display: flex; align-items: center; justify-content: space-between;
}
.mobile-submenu .a-venir .tag {
  font-size: 9px; letter-spacing: 0.08em; text-transform: uppercase;
  border: 1px solid rgba(255,255,255,0.15); border-radius: 2px; padding: 2px 6px;
}

.mobile-menu-foot { margin-top: auto; padding: 1.25rem 1.5rem 1.5rem; border-top: 1px solid rgba(255,255,255,0.08); }
.mobile-menu-foot .btn-nav { display: block; text-align: center; }

html.menu-ouvert, html.menu-ouvert body { overflow: hidden; }
@media (max-width: 700px) {
  .nav-toggle { display: block; }
}

.mobile-menu-foot .btn-nav {
  display: block; text-align: center; text-decoration: none;
  background: var(--bleu); color: #fff; padding: 12px;
  font-family: 'DM Sans', Arial, sans-serif; font-size: 12px; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; border-radius: 3px;
}