/* =========================================================
   climaide.fr — feuille de style
   Mobile-first. Pas de framework. Polices système uniquement.
   Registre volontairement sobre et institutionnel : bleu marine
   profond, accent bronze, fond papier, titres serif — pensé pour
   contraster nettement avec clim-reversible-prix.fr (bleu/orange
   vif, sans-serif, registre commercial).
   ========================================================= */

:root {
  --marine: #16283f;
  --marine-fonce: #0c1826;
  --marine-clair: #e8edf3;
  --or: #97722e;
  --or-fonce: #7a5c23;
  --or-clair: #f4ecda;
  --alerte: #8f2b28;
  --alerte-clair: #f7e8e6;
  --succes: #3c6b4c;
  --succes-clair: #e6f0e8;
  --encre: #1b2129;
  --encre-doux: #5a6270;
  --fond: #faf8f4;
  --carte: #ffffff;
  --bordure: #e2e0d8;
  --rayon: 10px;
  --rayon-petit: 6px;
  --ombre: 0 2px 12px rgba(22, 40, 63, 0.08);
  --ombre-forte: 0 14px 34px rgba(22, 40, 63, 0.16);

  /* Marge de page généreuse : jamais de texte collé aux bords, y
     compris sur les très petits écrans (min 1.35rem ≈ 21.6px). */
  --marge-page: clamp(1.35rem, 6vw, 2.75rem);
  --largeur-max: 1160px;
  --largeur-texte: 1040px;

  --police-titres: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --police-corps: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--police-corps);
  color: var(--encre);
  background: var(--fond);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  accent-color: var(--marine);
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--marine); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--or-fonce); }

h1, h2, h3, h4 {
  font-family: var(--police-titres);
  line-height: 1.2;
  font-weight: 700;
  color: var(--marine);
  letter-spacing: -.01em;
}
h1 { font-size: clamp(1.7rem, 5vw, 2.35rem); margin: 0 0 .7rem; }
h2 { font-size: clamp(1.3rem, 3.4vw, 1.55rem); margin: 2.2rem 0 .9rem; }
h3 { font-size: 1.15rem; margin: 1.4rem 0 .5rem; }
p { margin: 0 0 1rem; }
ul, ol { padding-left: 1.35rem; margin: 0 0 1rem; }
li { margin-bottom: .4rem; }

.eyebrow {
  display: block;
  font-family: var(--police-corps);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--or-fonce);
  margin-bottom: .55rem;
}

.container {
  max-width: var(--largeur-max);
  margin: 0 auto;
  padding: 0 var(--marge-page);
}

/* ---------- Barre utilitaire (confiance/institutionnel) ---------- */
.barre-utilitaire {
  background: var(--marine-fonce);
  color: #c9d2dd;
  font-size: .76rem;
}
.barre-utilitaire .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .8rem;
  padding-top: .4rem;
  padding-bottom: .4rem;
  flex-wrap: wrap;
}
.barre-utilitaire strong { color: #fff; }
.barre-utilitaire a { color: #e7c98a; }

/* ---------- Bandeau réforme ---------- */
.bandeau-reforme { background: var(--alerte); color: #fff; }
.bandeau-reforme .container {
  display: flex; align-items: center; gap: .8rem;
  padding-top: .6rem; padding-bottom: .6rem; font-size: .87rem; flex-wrap: wrap;
}
.bandeau-reforme strong { font-weight: 700; }
.bandeau-reforme a { color: #fff; text-decoration: underline; font-weight: 600; white-space: nowrap; }

/* ---------- Fraîcheur / vérification ---------- */
.badge-frais {
  display: inline-flex; align-items: center; gap: .4rem; font-size: .78rem;
  color: var(--succes); background: var(--succes-clair); border: 1px solid #cfe2d4;
  border-radius: 999px; padding: .28rem .8rem; margin-bottom: 1.1rem; font-weight: 600;
}
.badge-frais.a-verifier { color: var(--or-fonce); background: var(--or-clair); border-color: #e6d7b3; }

.source-cite {
  font-size: .82rem; color: var(--encre-doux); background: var(--carte);
  border: 1px solid var(--bordure); border-left: 3px solid var(--marine);
  border-radius: var(--rayon-petit); padding: .8rem .95rem; margin: 1.3rem 0;
}
.source-cite strong { color: var(--encre); }

/* ---------- En-tête / navigation ---------- */
.site-header {
  border-bottom: 1px solid var(--bordure);
  position: sticky; top: 0;
  background: rgba(250, 248, 244, .97);
  backdrop-filter: saturate(160%) blur(6px);
  z-index: 50;
}
.header-bar {
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
  padding: .85rem var(--marge-page); max-width: var(--largeur-max); margin: 0 auto;
}
.logo {
  font-family: var(--police-titres); font-weight: 700; font-size: 1.2rem;
  color: var(--marine); text-decoration: none; white-space: nowrap;
}
.logo span.argile { color: var(--or-fonce); }

.nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border: 1px solid var(--bordure);
  border-radius: var(--rayon-petit); background: var(--carte); cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; color: var(--marine); }

.main-nav { display: none; border-top: 1px solid var(--bordure); background: var(--fond); }
.main-nav.ouvert { display: block; }
.main-nav ul {
  list-style: none; margin: 0; padding: .5rem var(--marge-page) 1.1rem;
  display: flex; flex-direction: column;
}
.main-nav a {
  display: block; padding: .65rem .2rem; color: var(--encre); text-decoration: none;
  border-bottom: 1px solid var(--bordure); font-size: .95rem;
}
.header-cta { display: none; }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .main-nav { display: block !important; border-top: none; }
  .main-nav ul { flex-direction: row; padding: 0; gap: 1.35rem; align-items: center; }
  .main-nav a { border-bottom: none; padding: .3rem 0; font-size: .91rem; color: var(--encre); }
  .main-nav a:hover { color: var(--marine); }
  .header-cta {
    display: inline-block; background: var(--marine); color: #fff;
    padding: .62rem 1.15rem; border-radius: var(--rayon-petit); text-decoration: none;
    font-weight: 600; font-size: .88rem; white-space: nowrap;
  }
  .header-cta:hover { background: var(--marine-fonce); color: #fff; }
}

/* ---------- Fil d'ariane ---------- */
.fil-ariane { font-size: .82rem; color: var(--encre-doux); margin: 1rem 0 0; }
.fil-ariane a { color: var(--encre-doux); text-decoration: none; }
.fil-ariane a:hover { color: var(--marine); }

/* ---------- Héros standard (pages intérieures) ---------- */
.hero { padding: 1.3rem 0 1.7rem; }
.hero .chapo { font-size: 1.06rem; color: var(--encre-doux); max-width: 62ch; }

/* ---------- Héros premium (accueil, avec image) ---------- */
.hero-premium { padding: 1.6rem 0 2.2rem; }
.hero-premium-grid { display: grid; grid-template-columns: 1fr; gap: 1.8rem; align-items: center; }
@media (min-width: 880px) {
  .hero-premium-grid { grid-template-columns: 1.1fr .9fr; gap: 2.5rem; }
}
.hero-premium h1 { margin-bottom: .8rem; }
.hero-premium .chapo { font-size: 1.08rem; color: var(--encre-doux); max-width: 56ch; margin-bottom: 1.2rem; }
.hero-premium-visuel {
  border-radius: var(--rayon); overflow: hidden; box-shadow: var(--ombre-forte);
  border: 1px solid var(--bordure);
}
.hero-premium-visuel img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.hero-boutons { display: flex; flex-wrap: wrap; gap: .8rem; }

/* ---------- Bande de chiffres clés ---------- */
.chiffres-cles {
  background: var(--marine); color: #fff; padding: 1.6rem 0;
}
.chiffres-cles .container {
  display: grid; grid-template-columns: 1fr; gap: 1.3rem;
}
@media (min-width: 720px) { .chiffres-cles .container { grid-template-columns: repeat(3, 1fr); } }
.chiffre-item { text-align: left; }
.chiffre-item .valeur {
  font-family: var(--police-titres); font-size: 2rem; font-weight: 700; color: #fff;
  display: block; line-height: 1;
}
.chiffre-item .valeur span { color: #d9b869; }
.chiffre-item .label { font-size: .85rem; color: #b9c3d1; margin-top: .4rem; display: block; }

/* ---------- Contenu article ---------- */
.article { padding: .6rem 0 2.8rem; }
.article-grid { display: grid; grid-template-columns: 1fr; gap: 2.2rem; }
@media (min-width: 960px) { .article-grid { grid-template-columns: minmax(0,1fr) 300px; } }

.corps { max-width: var(--largeur-texte); }
.corps p, .corps li { color: var(--encre); }
.corps table { width: 100%; border-collapse: collapse; margin: 1rem 0 1.6rem; font-size: .92rem; }
.corps caption { text-align: left; font-size: .8rem; color: var(--encre-doux); margin-bottom: .4rem; }
.corps th, .corps td { border: 1px solid var(--bordure); padding: .6rem .65rem; text-align: left; }
.corps th { background: var(--marine-clair); font-weight: 700; color: var(--marine); }
.corps tbody tr:nth-child(even) { background: #fbfaf6; }

.encadre {
  background: var(--succes-clair); border-left: 4px solid var(--succes);
  border-radius: var(--rayon-petit); padding: 1.05rem 1.15rem; margin: 1.4rem 0; font-size: .95rem;
}
.encadre.avertissement { background: var(--alerte-clair); border-left-color: var(--alerte); }
.encadre.reforme { background: var(--or-clair); border-left-color: var(--or); }
.encadre h4 { margin-top: 0; font-family: var(--police-titres); color: var(--encre); }

/* ---------- Bloc auteur ---------- */
.bloc-auteur {
  display: flex; gap: .85rem; align-items: flex-start; background: var(--carte);
  border: 1px solid var(--bordure); border-radius: var(--rayon); padding: 1rem 1.1rem;
  margin: 1.6rem 0; font-size: .88rem;
}
.bloc-auteur .avatar {
  width: 46px; height: 46px; border-radius: 50%; background: var(--marine); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700;
  font-size: .95rem; flex-shrink: 0; font-family: var(--police-titres);
}
.bloc-auteur strong { display: block; color: var(--encre); }

/* ---------- CTA devis ---------- */
.cta-devis {
  background: linear-gradient(160deg, var(--marine) 0%, var(--marine-fonce) 100%);
  color: #fff; border-radius: var(--rayon); padding: 1.4rem 1.3rem; margin: 1.9rem 0;
  box-shadow: var(--ombre);
}
.cta-devis h3 { color: #fff; margin-top: 0; }
.cta-devis p { color: #d8dfe8; font-size: .93rem; }
.bouton {
  display: inline-block; background: var(--or); color: #fff; font-weight: 700;
  text-decoration: none; padding: .78rem 1.35rem; border-radius: var(--rayon-petit);
  font-size: .95rem; border: none; cursor: pointer;
}
.bouton:hover { background: var(--or-fonce); color: #fff; }
.bouton.secondaire { background: transparent; color: var(--marine); border: 1.5px solid var(--marine); }
.bouton.secondaire:hover { background: var(--marine-clair); color: var(--marine); }
.cta-devis .bouton.secondaire { color: #fff; border-color: rgba(255,255,255,.6); }
.cta-devis .bouton.secondaire:hover { background: rgba(255,255,255,.12); color: #fff; }

/* ---------- Cartes ---------- */
.grille-cartes { display: grid; grid-template-columns: 1fr; gap: 1.1rem; margin: 1.6rem 0; }
@media (min-width: 640px) { .grille-cartes { grid-template-columns: 1fr 1fr; } }
@media (min-width: 960px) { .grille-cartes { grid-template-columns: repeat(3, 1fr); } }

.carte {
  border: 1px solid var(--bordure); border-radius: var(--rayon); padding: 1.2rem;
  text-decoration: none; color: var(--encre); background: var(--carte);
  transition: box-shadow .15s ease, transform .15s ease, border-color .15s ease;
}
.carte:hover { box-shadow: var(--ombre-forte); transform: translateY(-2px); color: var(--encre); border-color: var(--marine); }
.carte .prix-tag {
  display: inline-block; font-size: .76rem; font-weight: 700; color: var(--or-fonce);
  background: var(--or-clair); padding: .22rem .6rem; border-radius: 999px; margin-bottom: .55rem;
  text-transform: uppercase; letter-spacing: .03em;
}
.carte h3 { margin: .2rem 0 .4rem; font-size: 1.03rem; color: var(--marine); }
.carte p { font-size: .85rem; color: var(--encre-doux); margin-bottom: 0; }

/* ---------- FAQ ---------- */
.faq-item { border-bottom: 1px solid var(--bordure); padding: .95rem 0; }
.faq-item summary {
  cursor: pointer; font-weight: 700; font-size: .98rem; list-style: none;
  display: flex; justify-content: space-between; gap: .6rem; align-items: center; color: var(--marine);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.3rem; color: var(--or); flex-shrink: 0; }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item .reponse { margin-top: .65rem; color: var(--encre-doux); font-size: .93rem; }

/* ---------- Outils interactifs ---------- */
.outil { background: var(--carte); border: 1px solid var(--bordure); border-radius: var(--rayon); padding: 1.3rem; margin: 1.6rem 0 2.1rem; }
.outil h3 { margin-top: 0; }
.champ { margin-bottom: 1.05rem; }
.champ label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: .38rem; }
.champ select, .champ input {
  width: 100%; padding: .62rem .72rem; border: 1px solid var(--bordure); border-radius: var(--rayon-petit);
  font-size: .95rem; background: #fff; color: var(--encre); font-family: inherit;
}
.champ .plage { display: flex; align-items: center; gap: .9rem; }
.champ .plage output { font-weight: 700; color: var(--marine); min-width: 4.2em; text-align: right; }

input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 6px;
  border-radius: 999px; background: var(--bordure); outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 22px; height: 22px; border-radius: 50%;
  background: var(--marine); border: 3px solid #fff; box-shadow: 0 1px 4px rgba(22,40,63,.35); cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 22px; height: 22px; border-radius: 50%; background: var(--marine);
  border: 3px solid #fff; box-shadow: 0 1px 4px rgba(22,40,63,.35); cursor: pointer;
}

.resultat-outil { margin-top: 1.15rem; background: #fff; border: 1.5px solid var(--marine); border-radius: var(--rayon-petit); padding: 1.05rem; }
.resultat-outil .fourchette { font-size: 1.6rem; font-weight: 800; color: var(--marine); font-family: var(--police-titres); }
.resultat-outil .detail { font-size: .82rem; color: var(--encre-doux); }
.outil .note-legale { font-size: .75rem; color: var(--encre-doux); margin-top: .85rem; }

/* ---------- Formulaire devis ---------- */
.form-devis { background: var(--carte); border: 1px solid var(--bordure); border-radius: var(--rayon); padding: 1.4rem; margin: 1.6rem 0; }
.form-devis .ligne { margin-bottom: 1.05rem; }
.form-devis label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: .38rem; }
.form-devis input, .form-devis select, .form-devis textarea {
  width: 100%; padding: .68rem .78rem; border: 1px solid var(--bordure); border-radius: var(--rayon-petit);
  font-size: .95rem; font-family: inherit;
}
.champ-piege { position: absolute; left: -9999px; top: -9999px; }
.form-devis .rgpd { font-size: .78rem; color: var(--encre-doux); }
.msg-etat { margin-top: 1rem; padding: .85rem; border-radius: var(--rayon-petit); font-size: .9rem; display: none; }
.msg-etat.visible { display: block; }
.msg-etat.succes { background: var(--succes-clair); color: var(--succes); border: 1px solid #cfe2d4; }
.msg-etat.erreur { background: var(--alerte-clair); color: var(--alerte); border: 1px solid #ecc9c6; }

/* ---------- Sommaire latéral ---------- */
.sommaire {
  border: 1px solid var(--bordure); border-radius: var(--rayon); padding: 1.05rem 1.15rem;
  font-size: .87rem; align-self: start; position: sticky; top: 5rem; background: var(--carte);
}
.sommaire h2 { font-size: .76rem; text-transform: uppercase; letter-spacing: .05em; margin: 0 0 .65rem; color: var(--encre-doux); font-family: var(--police-corps); }
.sommaire ol { padding-left: 1.1rem; margin: 0; }
.sommaire a { text-decoration: none; color: var(--encre); }
.sommaire a:hover { color: var(--marine); }

/* ---------- Timeline échéances ---------- */
.timeline { list-style: none; margin: 1.4rem 0; padding: 0; border-left: 2px solid var(--bordure); }
.timeline li { position: relative; padding: 0 0 1.35rem 1.45rem; }
.timeline li::before {
  content: ""; position: absolute; left: -7px; top: 4px; width: 12px; height: 12px;
  border-radius: 50%; background: var(--carte); border: 2px solid var(--marine);
}
.timeline li.passe::before { background: var(--succes); border-color: var(--succes); }
.timeline li.urgent::before { background: var(--alerte); border-color: var(--alerte); }
.timeline .date-tl { font-weight: 700; font-family: var(--police-titres); display: block; color: var(--marine); }
.timeline .desc-tl { color: var(--encre-doux); font-size: .92rem; }

/* ---------- Liste actus ---------- */
.liste-actus { list-style: none; padding: 0; margin: 1.6rem 0; }
.actu-item {
  display: block; border: 1px solid var(--bordure); border-radius: var(--rayon);
  padding: 1.05rem 1.15rem; margin-bottom: .95rem; text-decoration: none; color: var(--encre); background: var(--carte);
}
.actu-item:hover { box-shadow: var(--ombre); color: var(--encre); border-color: var(--marine); }
.actu-item .date-actu { font-size: .76rem; color: var(--or-fonce); font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.actu-item h3 { margin: .35rem 0 .35rem; font-size: 1.05rem; color: var(--marine); }
.actu-item p { font-size: .88rem; color: var(--encre-doux); margin-bottom: 0; }

/* ---------- Pied de page ---------- */
.site-footer { background: var(--marine-fonce); color: #cdd5df; margin-top: 3.2rem; padding: 2.4rem 0 1.5rem; font-size: .88rem; }
.site-footer a { color: #e7c98a; }
.footer-grille { display: grid; gap: 1.7rem; grid-template-columns: 1fr; margin-bottom: 1.7rem; }
@media (min-width: 720px) { .footer-grille { grid-template-columns: repeat(4, 1fr); } }
.footer-grille h4 { color: #fff; font-family: var(--police-titres); font-size: .9rem; margin: 0 0 .75rem; }
.footer-grille ul { list-style: none; padding: 0; margin: 0; }
.footer-grille li { margin-bottom: .48rem; }
.footer-bas {
  border-top: 1px solid rgba(255,255,255,.12); padding-top: 1.05rem; font-size: .78rem; color: #97a2b1;
  display: flex; flex-wrap: wrap; gap: .6rem 1.2rem; justify-content: space-between;
}

.articles-lies { margin: 2.1rem 0; }
.articles-lies ul { list-style: none; padding: 0; }
.articles-lies li { border-top: 1px solid var(--bordure); padding: .75rem 0; }
.articles-lies a { text-decoration: none; font-weight: 600; color: var(--marine); }

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 3px solid var(--or); outline-offset: 2px;
}
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--marine); color: #fff; padding: .6rem 1rem; z-index: 100; }
.skip-link:focus { left: .5rem; top: .5rem; }