/* ==========================================================================
   WATT & DÉCO | Design system
   Ambiance : "halo lumineux chaud sur fond nuit" | magazine déco premium.
   Polices : Marcellus (titres, élégance classique du luminaire) + Hanken Grotesk (corps/UI).
   Palette : nuit chaude + ambre doré incandescent. Jamais de cuivre/terracotta.
   Vocabulaire CSS propre au site : scene-, faisceau-, halo, lueur, luminaire-,
   piece-, lumens-, kelvin-, technique-, pied-.
   ========================================================================== */

:root {
  /* Fonds nuit (noirs chauds, jamais purs) */
  --nuit:          #14110c;
  --nuit-profond:  #0d0b07;
  --nuit-voile:    #1d1810;   /* sections alternées */
  --nuit-carte:    #211b12;   /* fond des cartes */

  /* Lumière (ambre doré incandescent) */
  --halo:          #f4b740;   /* accent principal, la lumière */
  --halo-vif:      #ffca5c;
  --halo-clair:    #ffd98a;
  --halo-braise:   #e08a2b;   /* bas du dégradé de flamme, chaud mais PAS cuivre */

  /* Crèmes (texte sur nuit) */
  --creme:         #f1e9d8;   /* texte principal */
  --creme-doux:    #c5b9a0;   /* texte secondaire */
  --creme-sourd:   #8f836d;   /* texte tertiaire / légendes */

  /* Lignes & lueurs */
  --filet:         rgba(244, 183, 64, 0.18);
  --filet-fort:    rgba(244, 183, 64, 0.38);
  --voile-creme:   rgba(241, 233, 216, 0.08);
  --lueur:         rgba(244, 183, 64, 0.28);
  --lueur-large:   rgba(244, 183, 64, 0.14);

  --rayon:         5px;        /* coins nets et élégants, pas de gros arrondis */
  --rayon-doux:    10px;
  --largeur:       1180px;
  --largeur-texte: 760px;

  --serif:  "Marcellus", Georgia, serif;
  --sans:   "Hanken Grotesk", system-ui, -apple-system, sans-serif;
}

/* --------------------------------------------------------------------------
   Base
   -------------------------------------------------------------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--nuit);
  color: var(--creme);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.75;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  /* grain de lumière très subtil + halo diffus en haut de page */
  background-image:
    radial-gradient(1100px 520px at 78% -8%, rgba(244,183,64,0.10), transparent 60%),
    radial-gradient(800px 400px at 5% 2%, rgba(224,138,43,0.06), transparent 60%);
  background-attachment: fixed;
}

.container {
  width: 100%;
  max-width: var(--largeur);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--halo-clair); text-decoration: none; }
a:hover { color: var(--halo-vif); }

h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.15; letter-spacing: 0.2px; }

img { max-width: 100%; height: auto; display: block; }

::selection { background: var(--halo); color: var(--nuit-profond); }

:focus-visible {
  outline: 2px solid var(--halo-vif);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --------------------------------------------------------------------------
   En-tête (barre de navigation)
   -------------------------------------------------------------------------- */
.entete {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 11, 7, 0.82);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--filet);
}
.entete-rang {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.entete-marque {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-family: var(--serif);
  font-size: 1.42rem;
  color: var(--creme);
  letter-spacing: 0.5px;
}
.entete-marque:hover { color: var(--creme); }
.entete-marque .marque-watt { color: var(--halo); }
/* la petite ampoule qui veille dans le logo */
.marque-lueur {
  width: 14px; height: 14px; border-radius: 50%;
  background: radial-gradient(circle at 38% 35%, var(--halo-clair), var(--halo) 55%, var(--halo-braise));
  box-shadow: 0 0 10px var(--lueur), 0 0 22px var(--lueur-large);
  flex: 0 0 auto;
}

.entete-nav { display: flex; align-items: center; gap: 28px; }
.entete-nav a {
  color: var(--creme-doux);
  font-size: 0.94rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  padding: 6px 0;
  position: relative;
}
.entete-nav a:hover { color: var(--creme); }
.entete-nav a::after {
  content: "";
  position: absolute; left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--halo);
  box-shadow: 0 0 8px var(--lueur);
  transition: width 0.25s ease;
}
.entete-nav a:hover::after,
.entete-nav a.est-actif::after { width: 100%; }
.entete-nav a.est-actif { color: var(--creme); }

/* bouton menu mobile : un interrupteur */
.entete-allumer {
  display: none;
  background: transparent;
  border: 1px solid var(--filet-fort);
  border-radius: var(--rayon);
  width: 46px; height: 40px;
  cursor: pointer;
  color: var(--halo);
  align-items: center; justify-content: center;
}
.entete-allumer svg { width: 22px; height: 22px; }

/* --------------------------------------------------------------------------
   Fil d'Ariane
   -------------------------------------------------------------------------- */
.fil-ariane { padding: 22px 0 0; }
.fil-ariane ol {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 0.85rem; color: var(--creme-sourd);
}
.fil-ariane li { display: inline-flex; align-items: center; gap: 8px; }
.fil-ariane li:not(:last-child)::after {
  content: "›";
  color: var(--filet-fort);
  font-size: 1rem;
}
.fil-ariane a { color: var(--creme-doux); }
.fil-ariane a:hover { color: var(--halo-clair); }

/* --------------------------------------------------------------------------
   Scène d'ouverture (accueil) | titre aligné à gauche + faisceau lumineux
   -------------------------------------------------------------------------- */
.scene-lumiere {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--filet);
}
.scene-rang {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 40px;
  padding: 86px 0 90px;
}
.scene-eclat {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--sans);
  font-size: 0.8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 2.4px;
  color: var(--halo);
  margin-bottom: 22px;
}
.scene-eclat::before {
  content: ""; width: 26px; height: 1px; background: var(--filet-fort);
}
.scene-lumiere h1 {
  font-size: clamp(2.5rem, 5.2vw, 3.9rem);
  margin: 0 0 22px;
  color: var(--creme);
}
.scene-lumiere h1 em {
  font-style: normal;
  color: var(--halo);
  /* le mot qui s'allume */
  text-shadow: 0 0 26px var(--lueur), 0 0 54px var(--lueur-large);
}
.scene-intro {
  font-size: 1.16rem;
  color: var(--creme-doux);
  max-width: 30em;
  margin: 0 0 32px;
}
.scene-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* l'illustration : une suspension qui projette son cône de lumière */
.scene-faisceau { position: relative; min-height: 320px; }
.scene-faisceau svg { width: 100%; height: auto; }

/* --------------------------------------------------------------------------
   Boutons (propres au site : "allumé" plein vs "veilleuse" contour)
   -------------------------------------------------------------------------- */
.bouton-allume,
.bouton-veilleuse {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 26px;
  font-family: var(--sans);
  font-size: 0.98rem; font-weight: 600; letter-spacing: 0.3px;
  border-radius: var(--rayon);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.25s ease, background 0.2s ease;
}
.bouton-allume {
  background: linear-gradient(135deg, var(--halo-vif), var(--halo-braise));
  color: var(--nuit-profond);
  border: none;
  box-shadow: 0 0 0 rgba(244,183,64,0), 0 10px 28px rgba(224,138,43,0.28);
}
.bouton-allume:hover {
  color: var(--nuit-profond);
  transform: translateY(-2px);
  box-shadow: 0 0 26px var(--lueur), 0 14px 34px rgba(224,138,43,0.36);
}
.bouton-veilleuse {
  background: transparent;
  color: var(--creme);
  border: 1px solid var(--filet-fort);
}
.bouton-veilleuse:hover {
  color: var(--halo-clair);
  border-color: var(--halo);
  box-shadow: 0 0 18px var(--lueur-large);
}
.bouton-allume svg, .bouton-veilleuse svg { width: 18px; height: 18px; }

/* --------------------------------------------------------------------------
   Titres de section
   -------------------------------------------------------------------------- */
.rubrique { padding: 78px 0; }
.rubrique.voilee { background: var(--nuit-voile); border-block: 1px solid var(--filet); }

.rubrique-chapeau { max-width: 640px; margin-bottom: 44px; }
.rubrique-chapeau.centre { margin-inline: auto; text-align: center; }
.rubrique-surtitre {
  font-size: 0.78rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 2.2px; color: var(--halo);
  display: block; margin-bottom: 14px;
}
.rubrique-chapeau h2 {
  font-size: clamp(1.9rem, 3.6vw, 2.55rem);
  margin: 0 0 14px; color: var(--creme);
}
.rubrique-chapeau p { color: var(--creme-doux); margin: 0; font-size: 1.06rem; }

/* --------------------------------------------------------------------------
   Grille des types de luminaires (cartes asymétriques, pas un mur uniforme)
   -------------------------------------------------------------------------- */
.grille-luminaires {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.carte-luminaire {
  position: relative;
  display: flex; flex-direction: column;
  padding: 26px 24px 24px;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(244,183,64,0.10), transparent 60%),
    var(--nuit-carte);
  border: 1px solid var(--filet);
  border-radius: var(--rayon-doux);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.3s ease;
}
/* la première carte (le plus gros volume) occupe deux colonnes */
.carte-luminaire.vedette { grid-column: span 2; }
.carte-luminaire:hover {
  transform: translateY(-3px);
  border-color: var(--filet-fort);
  box-shadow: 0 18px 40px rgba(0,0,0,0.4), 0 0 30px var(--lueur-large);
  color: inherit;
}
.carte-luminaire .luminaire-icone {
  width: 44px; height: 44px; margin-bottom: 16px;
  color: var(--halo);
  filter: drop-shadow(0 0 8px var(--lueur-large));
}
.carte-luminaire h3 { font-size: 1.4rem; margin: 0 0 7px; color: var(--creme); }
.carte-luminaire p { margin: 0; color: var(--creme-doux); font-size: 0.97rem; line-height: 1.6; }
.luminaire-fleche {
  margin-top: auto; padding-top: 16px;
  color: var(--halo); font-weight: 600; font-size: 0.9rem;
  display: inline-flex; align-items: center; gap: 7px;
  transition: gap 0.2s ease;
}
.carte-luminaire:hover .luminaire-fleche { gap: 12px; }
.luminaire-fleche svg { width: 17px; height: 17px; flex: 0 0 auto; }

/* --------------------------------------------------------------------------
   Pièce par pièce (bandes-listes enrichies, pas des cards identiques)
   -------------------------------------------------------------------------- */
.grille-pieces {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}
.carte-piece {
  display: flex; align-items: center; gap: 14px;
  padding: 18px 20px;
  background: var(--nuit-carte);
  border: 1px solid var(--filet);
  border-left: 3px solid var(--halo-braise);
  border-radius: var(--rayon);
  text-decoration: none;
  transition: border-left-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}
.carte-piece:hover {
  border-left-color: var(--halo);
  background: #261f15;
  transform: translateX(3px);
  color: inherit;
}
.carte-piece .piece-icone { width: 26px; height: 26px; color: var(--halo); flex: 0 0 auto; }
.carte-piece b { display: block; color: var(--creme); font-weight: 600; font-size: 1.04rem; }
.carte-piece span { color: var(--creme-sourd); font-size: 0.82rem; }

/* --------------------------------------------------------------------------
   Trio d'outils (signature data)
   -------------------------------------------------------------------------- */
.rampe-outils {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.plot-outil {
  display: flex; flex-direction: column;
  padding: 30px 26px;
  background:
    radial-gradient(90% 120% at 50% 0%, rgba(244,183,64,0.12), transparent 55%),
    var(--nuit-profond);
  border: 1px solid var(--filet);
  border-radius: var(--rayon-doux);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.3s ease, border-color 0.2s ease;
}
.plot-outil:hover {
  transform: translateY(-3px);
  border-color: var(--filet-fort);
  box-shadow: 0 0 34px var(--lueur-large);
  color: inherit;
}
.plot-outil .outil-numero {
  font-family: var(--serif);
  font-size: 0.95rem; color: var(--halo); letter-spacing: 2px; margin-bottom: 18px;
}
.plot-outil h3 { font-size: 1.35rem; margin: 0 0 9px; color: var(--creme); }
.plot-outil p { margin: 0 0 18px; color: var(--creme-doux); font-size: 0.96rem; }
.plot-outil .outil-acces {
  margin-top: auto; color: var(--halo); font-weight: 600; font-size: 0.92rem;
  display: inline-flex; align-items: center; gap: 8px;
}
.plot-outil .outil-acces svg { width: 17px; height: 17px; flex: 0 0 auto; }

/* --------------------------------------------------------------------------
   Bloc éditorial / manifeste
   -------------------------------------------------------------------------- */
.manifeste { max-width: var(--largeur-texte); }
.manifeste p { font-size: 1.12rem; color: var(--creme-doux); }
.manifeste p strong { color: var(--creme); font-weight: 600; }

/* --------------------------------------------------------------------------
   Contenu d'article (pages guides)
   -------------------------------------------------------------------------- */
.feuille-guide {
  display: grid;
  grid-template-columns: 1fr 290px;
  gap: 56px;
  padding: 30px 0 80px;
  align-items: start;
}
.guide-corps { max-width: 820px; min-width: 0; }
.guide-corps > h2 {
  font-size: 1.85rem; margin: 46px 0 14px; color: var(--creme);
  padding-top: 10px;
}
.guide-corps > h2:first-child { margin-top: 8px; }
.guide-corps > h3 { font-size: 1.32rem; margin: 32px 0 10px; color: var(--halo-clair); }
.guide-corps p { color: var(--creme); }
.guide-corps a { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--filet-fort); }
.guide-corps a:hover { text-decoration-color: var(--halo); }
.guide-corps ul, .guide-corps ol { padding-left: 1.2em; }
.guide-corps li { margin-bottom: 9px; color: var(--creme); }
.guide-corps li::marker { color: var(--halo); }

/* encadré technique réutilisable */
.note-watt {
  margin: 28px 0;
  padding: 22px 24px;
  background: var(--nuit-voile);
  border: 1px solid var(--filet);
  border-top: 3px solid var(--halo);
  border-radius: var(--rayon);
}
.note-watt h3, .note-watt h4 {
  margin: 0 0 9px; font-family: var(--sans); font-weight: 700;
  font-size: 0.82rem; text-transform: uppercase; letter-spacing: 1.6px; color: var(--halo);
}
.note-watt p:last-child { margin-bottom: 0; }

/* figures SVG des guides */
.guide-figure { margin: 32px 0; }
.guide-figure img { max-width: 100%; height: auto; border-radius: var(--rayon); }
.guide-figure img[src$=".svg"] { max-height: none; object-fit: initial; }
.guide-figure figcaption {
  margin-top: 10px; font-size: 0.85rem; color: var(--creme-sourd); text-align: center;
}

/* photo d'illustration en tête d'article (Pexels) */
.page-photo { margin: 4px 0 30px; }
.page-photo img {
  width: 100%; height: auto; display: block;
  border-radius: var(--rayon-doux);
  border: 1px solid var(--filet);
  box-shadow: 0 14px 36px rgba(0,0,0,0.35);
}

/* tableaux des guides */
.tableau-lumiere { width: 100%; border-collapse: collapse; margin: 26px 0; font-size: 0.95rem; }
.tableau-lumiere th, .tableau-lumiere td {
  padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--filet);
}
.tableau-lumiere thead th {
  background: var(--nuit-voile); color: var(--halo);
  font-family: var(--sans); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 1.2px;
}
.tableau-lumiere tbody tr:hover { background: rgba(244,183,64,0.04); }
.tableau-enveloppe { overflow-x: auto; }

/* sidebar de maillage */
.guide-aile { position: sticky; top: 92px; }
.aile-bloc {
  background: var(--nuit-carte);
  border: 1px solid var(--filet);
  border-radius: var(--rayon-doux);
  padding: 22px 22px;
  margin-bottom: 18px;
}
.aile-bloc h4 {
  margin: 0 0 14px; font-family: var(--sans); font-weight: 700;
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 1.6px; color: var(--halo);
}
.aile-bloc ul { list-style: none; margin: 0; padding: 0; }
.aile-bloc li { margin-bottom: 11px; line-height: 1.4; }
.aile-bloc li:last-child { margin-bottom: 0; }
.aile-bloc a { color: var(--creme-doux); font-size: 0.95rem; }
.aile-bloc a:hover { color: var(--halo-clair); }

/* --------------------------------------------------------------------------
   Pied de page (asymétrique : large marque + colonnes serrées)
   -------------------------------------------------------------------------- */
.pied {
  background: var(--nuit-profond);
  border-top: 1px solid var(--filet);
  padding: 60px 0 30px;
  margin-top: 40px;
}
.pied-rang {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 36px;
}
.pied-marque .entete-marque { font-size: 1.5rem; margin-bottom: 14px; }
.pied-marque p { color: var(--creme-sourd); font-size: 0.95rem; max-width: 30em; }
.pied-colonne h4 {
  font-family: var(--sans); font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1.4px; color: var(--halo);
  margin: 0 0 16px;
}
.pied-colonne ul { list-style: none; margin: 0; padding: 0; }
.pied-colonne li { margin-bottom: 10px; }
.pied-colonne a { color: var(--creme-doux); font-size: 0.94rem; }
.pied-colonne a:hover { color: var(--halo-clair); }
.pied-bas {
  margin-top: 44px; padding-top: 22px;
  border-top: 1px solid var(--voile-creme);
  display: flex; flex-wrap: wrap; gap: 8px 18px; justify-content: space-between;
  font-size: 0.84rem; color: var(--creme-sourd);
}
.pied-bas a { color: var(--creme-sourd); }
.pied-bas a:hover { color: var(--halo-clair); }

/* --------------------------------------------------------------------------
   Page 404
   -------------------------------------------------------------------------- */
.lampe-grillee { padding: 90px 20px; text-align: center; }
.lampe-grillee-inner { max-width: 560px; margin: 0 auto; }
.lampe-code {
  display: block; font-family: var(--serif);
  font-size: 6rem; color: var(--halo); line-height: 1; margin-bottom: 10px;
  text-shadow: 0 0 30px var(--lueur-large);
}
.lampe-grillee h1 { font-size: 2rem; margin: 0 0 12px; color: var(--creme); }
.lampe-grillee > .lampe-grillee-inner > p { color: var(--creme-doux); margin-bottom: 30px; }
.lampe-suggestions { margin-top: 44px; text-align: left; }
.lampe-suggestions h2 { font-size: 1rem; color: var(--creme-sourd); margin-bottom: 12px; font-family: var(--sans); }
.lampe-suggestions ul { list-style: none; padding: 0; }
.lampe-suggestions li { margin-bottom: 9px; }
.lampe-suggestions a { color: var(--halo-clair); text-decoration: underline; text-underline-offset: 3px; }

/* --------------------------------------------------------------------------
   Animation d'apparition douce (réutilisée par main.js)
   -------------------------------------------------------------------------- */
.au-reveil { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.au-reveil.eveille { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .au-reveil { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 920px) {
  .scene-rang { grid-template-columns: 1fr; gap: 30px; padding: 56px 0 60px; }
  .scene-faisceau { order: -1; max-width: 360px; margin: 0 auto; }
  .feuille-guide { grid-template-columns: 1fr; gap: 40px; }
  .guide-aile { position: static; }
  .grille-luminaires { grid-template-columns: repeat(2, 1fr); }
  .carte-luminaire.vedette { grid-column: span 2; }
  .rampe-outils { grid-template-columns: 1fr; }
  .pied-rang { grid-template-columns: 1fr 1fr; }
  .pied-marque { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  body { font-size: 17px; }
  .entete-nav {
    position: fixed; inset: 70px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--nuit-profond);
    border-bottom: 1px solid var(--filet);
    padding: 10px 24px 20px;
    transform: translateY(-130%);
    transition: transform 0.3s ease;
    box-shadow: 0 24px 40px rgba(0,0,0,0.5);
  }
  .entete-nav.est-ouvert { transform: none; }
  .entete-nav a { padding: 13px 0; border-bottom: 1px solid var(--voile-creme); }
  .entete-nav a::after { display: none; }
  .entete-allumer { display: inline-flex; }
  .grille-luminaires { grid-template-columns: 1fr; }
  .carte-luminaire.vedette { grid-column: auto; }
  .rubrique { padding: 56px 0; }
  .pied-rang { grid-template-columns: 1fr; gap: 28px; }
}

/* ==========================================================================
   OUTILS INTERACTIFS (calculateur lumens, economie LED, temperature couleur)
   ========================================================================== */

/* en-tete de page outil : titre a gauche, pas de bandeau centre */
.tete-outil { padding: 30px 0 6px; }
.tete-outil h1 {
  font-size: clamp(2.1rem, 4.4vw, 3rem); color: var(--creme); margin: 14px 0 14px;
}
.tete-outil .scene-eclat { margin-bottom: 6px; }
.tete-outil p { font-size: 1.12rem; color: var(--creme-doux); max-width: 40em; margin: 0; }

/* disposition outil + contenu explicatif */
.atelier { display: grid; grid-template-columns: 1fr; gap: 14px; padding: 30px 0 70px; }

/* le panneau interactif */
.outil-panneau {
  background:
    radial-gradient(120% 90% at 50% -10%, rgba(244,183,64,0.10), transparent 60%),
    var(--nuit-carte);
  border: 1px solid var(--filet-fort);
  border-radius: var(--rayon-doux);
  padding: 30px 30px 34px;
  box-shadow: 0 0 50px var(--lueur-large);
}
.outil-panneau h2 {
  font-size: 1.45rem; color: var(--creme); margin: 0 0 22px;
  font-family: var(--serif);
}

/* grille des champs */
.panneau-champs {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 24px;
}
.champ { display: flex; flex-direction: column; gap: 8px; }
.champ.pleine { grid-column: 1 / -1; }
.champ label {
  font-size: 0.86rem; font-weight: 600; color: var(--creme-doux);
  letter-spacing: 0.3px;
}
.champ label .champ-aide { display: block; font-weight: 400; font-size: 0.78rem; color: var(--creme-sourd); margin-top: 2px; }

.champ input[type="number"],
.champ input[type="text"],
.champ select {
  appearance: none; -webkit-appearance: none;
  background: var(--nuit-profond);
  border: 1px solid var(--filet);
  border-radius: var(--rayon);
  color: var(--creme);
  font-family: var(--sans); font-size: 1.05rem;
  padding: 12px 14px;
  width: 100%;
}
.champ select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23f4b740' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center;
  padding-right: 40px; cursor: pointer;
}
.champ input:focus, .champ select:focus {
  outline: none; border-color: var(--halo);
  box-shadow: 0 0 0 3px var(--lueur-large);
}

/* curseur (range) */
.curseur-rang { display: flex; flex-direction: column; gap: 10px; }
input[type="range"].curseur {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; border-radius: 6px;
  background: linear-gradient(90deg, var(--halo-braise), var(--halo-clair));
  outline: none; cursor: pointer;
}
input[type="range"].curseur::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 24px; height: 24px; border-radius: 50%;
  background: radial-gradient(circle at 38% 35%, #fff, var(--halo) 60%, var(--halo-braise));
  border: 2px solid var(--nuit-profond);
  box-shadow: 0 0 14px var(--lueur);
}
input[type="range"].curseur::-moz-range-thumb {
  width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--nuit-profond);
  background: radial-gradient(circle at 38% 35%, #fff, var(--halo) 60%, var(--halo-braise));
  box-shadow: 0 0 14px var(--lueur);
}

/* boutons radio facon segmented (pour le type d'ancienne ampoule, etc.) */
.segments { display: flex; flex-wrap: wrap; gap: 8px; }
.segments label {
  flex: 1; min-width: 90px; text-align: center;
  padding: 11px 10px; border: 1px solid var(--filet);
  border-radius: var(--rayon); cursor: pointer;
  font-size: 0.92rem; color: var(--creme-doux);
  background: var(--nuit-profond); transition: all 0.18s ease;
}
.segments input { position: absolute; opacity: 0; pointer-events: none; }
.segments label:hover { border-color: var(--filet-fort); color: var(--creme); }
.segments input:checked + span,
.segments label:has(input:checked) {
  border-color: var(--halo); color: var(--nuit-profond);
  background: linear-gradient(135deg, var(--halo-vif), var(--halo-braise));
  font-weight: 600; box-shadow: 0 0 16px var(--lueur-large);
}

/* panneau de resultat */
.resultat {
  margin-top: 26px; padding: 24px 26px;
  background: var(--nuit-profond);
  border: 1px solid var(--filet);
  border-left: 3px solid var(--halo);
  border-radius: var(--rayon);
}
.resultat-titre {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 1.6px;
  color: var(--halo); font-weight: 700; margin: 0 0 14px;
}
.resultat-chiffre {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 3.4rem); line-height: 1;
  color: var(--halo-clair);
  text-shadow: 0 0 26px var(--lueur-large);
}
.resultat-chiffre small { font-size: 1.1rem; color: var(--creme-doux); margin-left: 6px; font-family: var(--sans); }
.resultat-detail { margin-top: 14px; color: var(--creme); font-size: 0.98rem; }
.resultat-detail b { color: var(--halo-clair); }
.resultat-lignes { display: grid; gap: 10px; margin-top: 16px; }
.resultat-ligne {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 10px 0; border-bottom: 1px solid var(--voile-creme);
  font-size: 0.96rem; color: var(--creme-doux);
}
.resultat-ligne:last-child { border-bottom: none; }
.resultat-ligne b { color: var(--creme); font-weight: 600; }

/* apercu d'ambiance (temperature de couleur) */
.kelvin-apercu {
  margin-top: 22px; border-radius: var(--rayon-doux); overflow: hidden;
  border: 1px solid var(--filet);
}
.kelvin-scene {
  height: 200px;
  display: flex; align-items: flex-end; padding: 20px;
  transition: background 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}
.kelvin-scene .kelvin-piece-meuble {
  font-size: 0.82rem; color: rgba(0,0,0,0.55); font-weight: 600;
  background: rgba(255,255,255,0.5); padding: 5px 12px; border-radius: 40px;
}
.kelvin-legende {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 16px 20px; background: var(--nuit-profond);
}
.kelvin-valeur { font-family: var(--serif); font-size: 1.8rem; color: var(--halo-clair); }
.kelvin-nom { font-size: 0.95rem; color: var(--creme-doux); font-weight: 600; }
.kelvin-pieces { margin-top: 6px; font-size: 0.85rem; color: var(--creme-sourd); }

/* echelle kelvin (reglette de reference) */
.echelle-kelvin {
  height: 18px; border-radius: 40px; margin: 8px 0 4px;
  background: linear-gradient(90deg, #ff8a33, #ffb866, #ffd9a0, #fff4e6, #f4f7ff, #cfe0ff);
}
.echelle-bornes { display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--creme-sourd); }

.outil-note {
  margin-top: 18px; font-size: 0.88rem; color: var(--creme-sourd); line-height: 1.6;
}

@media (max-width: 600px) {
  .panneau-champs { grid-template-columns: 1fr; }
  .outil-panneau { padding: 24px 20px 26px; }
}