/* ==========================================================================
   LT Génie Climatique — Design system v2
   Palette : bleu nuit #14243A · orange chaud #F08A24 · sable #F1E9DC · blanc
   Style : chauffagiste RGE, univers froid/chaud. Volontairement éloigné du
   site e2g ET de l'exemple « Service Nettoyage » (header foncé, mise en page
   inversée, boutons rectangulaires, accent orange).
   ========================================================================== */

:root{
  /* Couleurs */
  --sand:      #F1E9DC;   /* fond général */
  --sand-2:    #E7DBC6;   /* sections alternées, filets */
  --paper:     #FBF6EE;   /* cartes crème */
  --white:     #FFFFFF;
  --navy:      #14243A;   /* base foncée : header, textes, sections sombres */
  --navy-2:    #21385A;
  --muted:     #5C6675;   /* texte secondaire */
  --orange:    #F08A24;   /* accent unique : CTA, numéro, urgence */
  --orange-600:#DA7413;   /* survol */
  --orange-050:#FBEAD3;   /* fond orange très clair */
  --line:      #DFD2BC;   /* filets sur sable */
  --line-dk:   #2B415E;   /* filets sur fond foncé */

  /* Rayons & ombres */
  --r-sm: 8px; --r-md: 14px; --r-lg: 20px; --r-xl: 30px;
  --shadow: 0 20px 44px -26px rgba(20,36,58,.55);
  --shadow-sm: 0 10px 24px -16px rgba(20,36,58,.5);

  /* Typo */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --maxw: 1180px;
}

/* ------------------------------ Base ------------------------------ */
*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0; font-family:var(--font-body); color:var(--navy);
  background:var(--sand); line-height:1.6; -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3{ font-family:var(--font-display); font-weight:800; line-height:1.08; letter-spacing:-.01em; margin:0; }
h1{ font-size:clamp(2.3rem,5.2vw,4rem); font-weight:900; }
h2{ font-size:clamp(1.8rem,3.6vw,2.7rem); }
h3{ font-size:1.2rem; }
p{ margin:0 0 1rem; }
.container{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 clamp(1rem,4vw,2rem); }
.eyebrow{
  font-family:var(--font-body); font-weight:700; text-transform:uppercase;
  letter-spacing:.16em; font-size:.78rem; color:var(--orange);
  display:inline-flex; align-items:center; gap:.6rem;
}
.eyebrow::before{ content:""; width:26px; height:2px; background:var(--orange); display:inline-block; }
.lede{ font-size:1.12rem; color:var(--muted); max-width:60ch; }
.section{ padding:clamp(3.5rem,7vw,6rem) 0; }
.section--paper{ background:var(--paper); }
.section--sand2{ background:var(--sand-2); }
.section--navy{ background:var(--navy); color:#D8E0EC; }
.section--navy h2, .section--navy h3{ color:#fff; }
.center{ text-align:center; }
.section-head{ max-width:64ch; margin-bottom:2.6rem; }
.section-head.center{ margin-left:auto; margin-right:auto; }

/* ------------------------------ Boutons (rectangulaires arrondis) --------- */
.btn{
  display:inline-flex; align-items:center; gap:.55rem; font-weight:700; font-size:1rem;
  padding:.9rem 1.4rem; border-radius:var(--r-md); border:2px solid transparent;
  cursor:pointer; transition:.18s ease; line-height:1;
}
.btn svg{ width:18px; height:18px; }
.btn--orange{ background:var(--orange); color:#20140a; border-color:var(--orange); }
.btn--orange:hover{ background:var(--orange-600); border-color:var(--orange-600); transform:translateY(-1px); }
.btn--ghost{ background:transparent; color:var(--navy); border-color:var(--navy); }
.btn--ghost:hover{ background:var(--navy); color:#fff; }
.btn--ghost-light{ background:transparent; color:#fff; border-color:rgba(255,255,255,.5); }
.btn--ghost-light:hover{ background:#fff; color:var(--navy); border-color:#fff; }
.btn--light{ background:#fff; color:var(--navy); border-color:#fff; }
.btn--light:hover{ background:var(--sand-2); border-color:var(--sand-2); }
.btn--lg{ padding:1.05rem 1.7rem; font-size:1.05rem; }

/* ------------------------------ Header (foncé) ------------------------------ */
.topbar{ background:var(--orange); color:var(--navy); font-size:.82rem; font-weight:600; }
.topbar .container{ display:flex; justify-content:space-between; align-items:center; gap:1rem; min-height:36px; }
.topbar a{ color:var(--navy); font-weight:800; }
.topbar .dot{ opacity:.5; }
.header{ position:sticky; top:0; z-index:50; background:var(--navy); color:#fff; border-bottom:3px solid var(--orange); }
.header .container{ display:flex; align-items:center; gap:1.5rem; min-height:76px; }
.brand{ display:flex; align-items:center; gap:.7rem; font-family:var(--font-display); font-weight:800; font-size:1.18rem; color:#fff; }
.brand .mark{
  width:44px; height:44px; border-radius:12px; background:var(--orange); color:var(--navy);
  display:grid; place-items:center; font-weight:900; font-size:.95rem; box-shadow:var(--shadow-sm);
}
.brand small{ display:block; font-family:var(--font-body); font-weight:600; font-size:.66rem; letter-spacing:.14em; text-transform:uppercase; color:#9FB0C6; }
.nav{ display:flex; gap:1.6rem; margin-left:auto; font-weight:600; }
.nav a{ padding:.4rem 0; color:#E4EAF2; }
.nav a:hover{ color:var(--orange); }
.header-cta{ display:flex; align-items:center; gap:1rem; }
.header-phone{ font-weight:800; font-size:1.05rem; color:#fff; white-space:nowrap; }
.header-phone span{ display:block; font-size:.62rem; font-weight:700; letter-spacing:.13em; text-transform:uppercase; color:#9FB0C6; }
.burger{ display:none; background:none; border:0; cursor:pointer; padding:.4rem; color:#fff; }
.burger svg{ width:28px; height:28px; }

/* Menus déroulants (survol) */
.nav-item{ position:relative; display:inline-flex; align-items:center; }
.nav-item > a{ display:inline-flex; align-items:center; gap:.28rem; }
.nav .caret{ width:14px; height:14px; transition:transform .15s ease; }
.nav-item:hover .caret{ transform:rotate(180deg); }
.nav .dropdown{
  position:absolute; top:100%; left:0; margin-top:0; background:var(--navy);
  border:1px solid var(--line-dk); border-top:3px solid var(--orange);
  border-radius:0 0 var(--r-md) var(--r-md); padding:.5rem; min-width:240px;
  box-shadow:var(--shadow); z-index:60; opacity:0; visibility:hidden; transform:translateY(6px);
  transition:.16s ease; display:flex; flex-direction:column;
}
.nav .dropdown--wide{ display:grid; grid-template-columns:repeat(3,minmax(150px,1fr)); gap:.1rem; min-width:520px; }
.nav .dropdown--wide .dropdown-head{ grid-column:1 / -1; }
.nav-item:hover .dropdown{ opacity:1; visibility:visible; transform:translateY(0); }
.nav .dropdown a{ padding:.5rem .7rem; border-radius:8px; color:#E4EAF2; white-space:nowrap; font-weight:600; font-size:.92rem; }
.nav .dropdown a:hover{ background:var(--navy-2); color:var(--orange); }
.dropdown-head{ font-size:.7rem; text-transform:uppercase; letter-spacing:.12em; color:#9FB0C6; padding:.3rem .7rem; font-weight:700; }

/* ------------------------------ Hero (illustration à gauche) ------------- */
.hero{ background:
    radial-gradient(120% 90% at 0% 0%, var(--sand-2) 0%, transparent 55%),
    var(--sand); padding:clamp(2.5rem,5vw,4.5rem) 0 clamp(3rem,6vw,5rem); overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns:.92fr 1.08fr; gap:clamp(2rem,4vw,3.5rem); align-items:center; }
.hero h1{ margin:1rem 0 1.1rem; }
.hero h1 em{ font-style:italic; color:var(--orange); }
.hero .badges{ display:flex; flex-wrap:wrap; gap:.5rem; margin:1.4rem 0; }
.hero-actions{ display:flex; flex-wrap:wrap; gap:.8rem; margin-top:1.6rem; }
.hero-trust{ display:flex; flex-wrap:wrap; gap:1.2rem; margin-top:1.6rem; font-size:.9rem; color:var(--muted); font-weight:600; }
.hero-trust b{ color:var(--navy); }
.hero-trust .ok{ color:var(--orange-600); }

/* Panneau illustré (foncé) */
.hero-visual{ position:relative; }
.hero-panel{
  background:var(--navy); border-radius:var(--r-xl); box-shadow:var(--shadow);
  padding:1.5rem; position:relative; overflow:hidden;
}
.hero-panel .tag{
  position:absolute; top:0; left:0; background:var(--orange); color:var(--navy);
  font-weight:800; font-size:.76rem; padding:.5rem .9rem; border-radius:0 0 var(--r-md) 0;
}
.illus-frame{ background:#0F1B2C; border-radius:var(--r-lg); overflow:hidden; margin-top:.4rem; }
.hero-panel .caption{ display:flex; align-items:center; gap:.6rem; margin-top:1rem; font-weight:700; font-size:.95rem; color:#fff; }
.hero-panel .caption svg{ width:20px; height:20px; color:var(--orange); }
.floating-aide{
  position:absolute; bottom:-20px; right:-12px; background:var(--orange); color:var(--navy);
  border-radius:var(--r-md); padding:.75rem 1rem; box-shadow:var(--shadow); max-width:220px; font-size:.82rem;
}
.floating-aide b{ display:block; font-size:.95rem; }

/* ------------------------------ Pills / badges ------------------------------ */
.pill{
  display:inline-flex; align-items:center; gap:.4rem; background:var(--white);
  border:1px solid var(--line); border-radius:999px; padding:.45rem .8rem;
  font-size:.82rem; font-weight:700; color:var(--navy);
}
.pill .qi{ width:8px; height:8px; border-radius:50%; background:var(--orange); }
.pill--navy{ background:var(--navy-2); color:#fff; border-color:var(--navy-2); }

/* ------------------------------ Bandeau aides ------------------------------ */
.aides-band{ background:var(--navy); color:#fff; border-top:3px solid var(--orange); }
.aides-band .container{ display:flex; flex-wrap:wrap; align-items:center; gap:1rem 2rem; padding:1.1rem 0; }
.aides-band strong{ font-size:1.05rem; color:var(--orange); }
.aides-band .sep{ opacity:.35; }
.aides-band a{ color:#fff; font-weight:800; text-decoration:underline; }

/* ------------------------------ Cartes services ------------------------------ */
.grid{ display:grid; gap:1.4rem; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:1.6rem; box-shadow:var(--shadow-sm); position:relative; transition:.2s ease;
  display:flex; flex-direction:column;
}
.card:hover{ transform:translateY(-3px); box-shadow:var(--shadow); border-color:var(--sand-2); }
.card .ico{ width:56px; height:56px; border-radius:14px; background:var(--orange-050); display:grid; place-items:center; margin-bottom:1rem; }
.card .ico svg{ width:30px; height:30px; color:var(--orange-600); }
.card h3{ margin-bottom:.5rem; }
.card p{ color:var(--muted); font-size:.96rem; flex:1; }
.card .price{ font-weight:800; color:var(--navy); margin:.6rem 0 1rem; font-size:1rem; }
.card .price small{ color:var(--muted); font-weight:600; font-size:.8rem; }
.card .more{ font-weight:700; color:var(--orange-600); display:inline-flex; align-items:center; gap:.4rem; }
.card .more svg{ width:16px; height:16px; }
.card--top-orange{ border-top:4px solid var(--orange); }

/* ------------------------------ Points forts ------------------------------ */
.feature{ display:flex; gap:1rem; align-items:flex-start; }
.feature .fi{ flex:0 0 auto; width:48px; height:48px; border-radius:12px; background:var(--navy); color:var(--orange); display:grid; place-items:center; }
.feature .fi svg{ width:24px; height:24px; }
.feature h3{ font-family:var(--font-body); font-weight:800; font-size:1.05rem; margin-bottom:.25rem; }
.feature p{ color:var(--muted); font-size:.92rem; margin:0; }

/* ------------------------------ Zones ------------------------------ */
.zones-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(190px,1fr)); gap:.6rem; }
.zone-link{
  background:var(--white); border:1px solid var(--line); border-radius:var(--r-sm);
  padding:.75rem 1rem; font-weight:600; display:flex; align-items:center; justify-content:space-between;
  gap:.5rem; transition:.15s ease; font-size:.95rem;
}
.zone-link:hover{ background:var(--navy); color:#fff; border-color:var(--navy); }
.zone-link svg{ width:16px; height:16px; color:var(--orange); flex:0 0 auto; }
.zone-link:hover svg{ color:var(--orange); }

/* ------------------------------ Avis ------------------------------ */
.review{ background:var(--white); border:1px solid var(--line); border-radius:var(--r-lg); padding:1.5rem; box-shadow:var(--shadow-sm); }
.stars{ color:var(--orange); letter-spacing:.1em; margin-bottom:.7rem; font-size:1rem; }
.review p{ font-size:.98rem; color:var(--navy-2); }
.review .who{ display:flex; align-items:center; gap:.7rem; margin-top:1rem; }
.review .av{ width:40px; height:40px; border-radius:50%; background:var(--orange-050); color:var(--orange-600); display:grid; place-items:center; font-weight:800; }
.review .who b{ display:block; font-size:.95rem; }
.review .who small{ color:var(--muted); }

/* ------------------------------ Bandeau urgence ------------------------------ */
.urgency{ background:var(--navy); color:#fff; border-radius:var(--r-xl); padding:clamp(2rem,4vw,3rem); text-align:center; box-shadow:var(--shadow); border:2px solid var(--orange); }
.urgency h2{ color:#fff; margin-bottom:.6rem; }
.urgency p{ color:#C6D0DE; max-width:52ch; margin:0 auto 1.4rem; }
.urgency .bignum{ font-family:var(--font-display); font-weight:900; font-size:clamp(1.8rem,4vw,2.6rem); display:inline-flex; align-items:center; gap:.6rem; color:var(--navy); }

/* ------------------------------ CTA générique ------------------------------ */
.callout{ display:flex; flex-wrap:wrap; gap:1rem; align-items:center; justify-content:space-between;
  background:var(--paper); border:1px solid var(--line); border-radius:var(--r-lg); padding:1.4rem 1.6rem; }

/* ------------------------------ Footer ------------------------------ */
.footer{ background:var(--navy); color:#A9B6C8; padding:clamp(3rem,5vw,4.5rem) 0 2rem; }
.footer a{ color:#DCE3ED; } .footer a:hover{ color:var(--orange); }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:2rem; }
.footer h4{ color:#fff; font-family:var(--font-body); font-weight:800; font-size:.85rem; text-transform:uppercase; letter-spacing:.12em; margin:0 0 1rem; }
.footer ul{ list-style:none; padding:0; margin:0; display:grid; gap:.5rem; font-size:.92rem; }
.footer .fnum{ font-family:var(--font-display); font-weight:900; font-size:1.7rem; color:var(--orange); display:inline-block; margin:.2rem 0 .4rem; }
.footer .fbrand{ display:flex; align-items:center; gap:.7rem; font-family:var(--font-display); font-weight:800; font-size:1.15rem; color:#fff; margin-bottom:.8rem; }
.footer .fbrand .mark{ width:38px; height:38px; border-radius:11px; background:var(--orange); color:var(--navy); display:grid; place-items:center; font-weight:900; }
.footer-bottom{ border-top:1px solid #26374F; margin-top:2.5rem; padding-top:1.5rem; font-size:.82rem; display:flex; flex-wrap:wrap; justify-content:space-between; gap:.6rem; color:#7C8AA0; }

/* ------------------------------ Bouton flottant mobile ------------------------------ */
.floating-call{
  position:fixed; left:0; right:0; bottom:0; z-index:60; display:none;
  background:var(--orange); color:var(--navy); text-align:center; font-weight:800; font-size:1.02rem;
  padding:.95rem; box-shadow:0 -8px 24px -12px rgba(0,0,0,.5); align-items:center; justify-content:center; gap:.5rem;
}
.floating-call svg{ width:20px; height:20px; }

/* ------------------------------ Breadcrumb ------------------------------ */
.crumbs{ font-size:.85rem; color:var(--muted); padding:1rem 0 0; }
.crumbs a{ color:var(--muted); } .crumbs a:hover{ color:var(--orange-600); }
.crumbs .sep{ margin:0 .4rem; }

/* ------------------------------ Contenu ------------------------------ */
.prose h2{ margin:2.2rem 0 1rem; }
.prose h3{ margin:1.6rem 0 .6rem; font-family:var(--font-body); font-weight:800; font-size:1.15rem; }
.prose p, .prose li{ color:var(--navy-2); }
.prose ul{ padding-left:1.1rem; }
.prose li{ margin:.35rem 0; }
.split{ display:grid; grid-template-columns:1.3fr .7fr; gap:2.5rem; align-items:start; }
.aside-card{ background:var(--paper); border:1px solid var(--line); border-radius:var(--r-lg); padding:1.5rem; position:sticky; top:100px; }
.aside-card .fnum{ font-family:var(--font-display); font-weight:900; font-size:1.6rem; color:var(--orange-600); }

.price-table{ width:100%; border-collapse:collapse; background:var(--white); border-radius:var(--r-lg); overflow:hidden; border:1px solid var(--line); }
.price-table th, .price-table td{ padding:1rem 1.2rem; text-align:left; border-bottom:1px solid var(--line); }
.price-table th{ background:var(--navy); color:#fff; font-size:.85rem; text-transform:uppercase; letter-spacing:.06em; }
.price-table td:last-child{ font-weight:800; color:var(--orange-600); white-space:nowrap; }
.price-table tr:last-child td{ border-bottom:0; }

.photo-slot{
  background:repeating-linear-gradient(45deg,var(--sand) 0 12px,var(--sand-2) 12px 24px);
  border:2px dashed var(--orange); border-radius:var(--r-lg); min-height:180px;
  display:grid; place-items:center; color:var(--orange-600); font-weight:700; text-align:center; padding:1rem; font-size:.85rem;
}
.site-photo{
  width:100%; border-radius:var(--r-lg); border:1px solid var(--line);
  box-shadow:var(--shadow-sm); aspect-ratio:3/2; object-fit:cover; display:block;
}
figure.site-figure{ margin:0; }
figure.site-figure figcaption{ font-size:.82rem; color:var(--muted); margin-top:.5rem; }

/* ------------------------------ Responsive ------------------------------ */
@media (max-width:960px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero-visual{ max-width:460px; margin:0 auto; }
  .hero-text{ order:-1; }            /* sur mobile : titre d'abord, illustration ensuite */
  .grid-3{ grid-template-columns:repeat(2,1fr); }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .split{ grid-template-columns:1fr; }
  .aside-card{ position:static; }
}
@media (max-width:720px){
  .nav, .header-phone span{ display:none; }
  .burger{ display:block; }
  .nav.open{
    display:flex; flex-direction:column; position:absolute; top:100%; left:0; right:0;
    background:var(--navy); border-bottom:3px solid var(--orange); padding:1rem clamp(1rem,4vw,2rem); gap:.2rem;
  }
  .nav.open a{ padding:.7rem 0; border-bottom:1px solid #26374F; }
  .nav.open .nav-item{ display:block; }
  .nav.open .caret{ display:none; }
  .nav.open .dropdown{ position:static; display:none !important; }  /* mobile : on garde le lien vers le hub */
  .grid-3, .grid-2{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  .floating-call{ display:flex; }
  body{ padding-bottom:56px; }
  .topbar{ display:none; }
}