/* ==========================================================================
   Design system — Site vitrine Plombier / Chauffagiste / Climatisation
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Fraunces:wght@500;600&display=swap');

:root{
  --navy:        #0f2b3d;
  --navy-light:  #163b52;
  --teal:        #0e8f8f;
  --teal-dark:   #0b6e6e;
  --sun:         #f2a541;
  --ice:         #eef6f7;
  --gray-50:     #f7f8f9;
  --gray-100:    #eceff1;
  --gray-400:    #8fa0a8;
  --gray-600:    #55676f;
  --ink:         #10242f;
  --white:       #ffffff;
  --radius-s:    8px;
  --radius-m:    16px;
  --radius-l:    28px;
  --shadow:      0 12px 30px -12px rgba(15,43,61,.18);
  --shadow-sm:   0 4px 14px -6px rgba(15,43,61,.15);
  --font-body:   'Manrope', system-ui, sans-serif;
  --font-head:   'Fraunces', Georgia, serif;
  --container:   1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{font-family:var(--font-head);line-height:1.15;margin:0 0 .5em;font-weight:600;color:var(--navy);}
h1{font-size:clamp(2.1rem,4vw,3.2rem);}
h2{font-size:clamp(1.6rem,2.6vw,2.3rem);}
h3{font-size:1.25rem;}
p{margin:0 0 1em;color:var(--gray-600);}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:88px 0;}
.section--tight{padding:56px 0;}
.section--alt{background:var(--ice);}
.section--dark{background:var(--navy);color:var(--white);}
.section--dark p{color:#c4d5dc;}
.section--dark h2{color:var(--white);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--teal-dark);margin-bottom:14px;
}
.eyebrow::before{content:'';width:22px;height:2px;background:var(--sun);display:inline-block;}
.section-head{max-width:640px;margin-bottom:48px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---- Boutons ---- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:100px;font-weight:700;font-size:.95rem;
  border:2px solid transparent;cursor:pointer;transition:.2s ease;
}
.btn-primary{background:var(--teal);color:var(--white);}
.btn-primary:hover{background:var(--teal-dark);transform:translateY(-2px);}
.btn-outline{border-color:var(--navy);color:var(--navy);}
.btn-outline:hover{background:var(--navy);color:var(--white);}
.btn-light{background:var(--white);color:var(--navy);}
.btn-light:hover{background:var(--sun);}
.btn-sm{padding:9px 18px;font-size:.85rem;}

/* ---- Header ---- */
.site-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--gray-100);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:var(--container);margin:0 auto;}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-head);font-weight:600;font-size:1.2rem;color:var(--navy);}
.brand .brand-badge{width:38px;height:38px;border-radius:10px;background:var(--teal);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.1rem;}
.main-nav{display:flex;gap:28px;align-items:center;}
.main-nav a{font-weight:600;font-size:.92rem;color:var(--navy-light);position:relative;padding:4px 0;}
.main-nav a:hover, .main-nav a.active{color:var(--teal-dark);}
.main-nav .btn{margin-left:8px;}
.nav-toggle{display:none;background:none;border:none;font-size:1.6rem;color:var(--navy);cursor:pointer;}

@media (max-width:860px){
  .nav-toggle{display:block;}
  .main-nav{
    position:absolute;top:100%;left:0;right:0;background:#fff;
    flex-direction:column;align-items:flex-start;padding:20px 24px 28px;
    box-shadow:var(--shadow);display:none;gap:16px;
  }
  .main-nav.open{display:flex;}
  .main-nav .btn{margin-left:0;}
}

/* ---- Hero ---- */
.hero{
  position:relative;background:linear-gradient(160deg,var(--navy) 0%,var(--navy-light) 60%,var(--teal-dark) 130%);
  color:#fff;overflow:hidden;
}
.hero::after{
  content:'';position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(242,165,65,.28),transparent 70%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding:96px 24px;max-width:var(--container);margin:0 auto;}
.hero h1{color:#fff;}
.hero p.lead{color:#cfe1e6;font-size:1.1rem;max-width:520px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;}
.hero-badges{display:flex;gap:22px;margin-top:44px;flex-wrap:wrap;}
.hero-badge{display:flex;gap:10px;align-items:center;font-size:.85rem;color:#dcebef;}
.hero-badge b{display:block;color:#fff;font-size:1.05rem;}
.hero-visual{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-l);aspect-ratio:4/5;display:flex;align-items:center;justify-content:center;
  font-size:5rem;backdrop-filter:blur(6px);
}
@media (max-width:900px){.hero-inner{grid-template-columns:1fr;padding:64px 24px;}.hero-visual{display:none;}}

/* ---- Cards grid génériques ---- */
.grid{display:grid;gap:28px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media (max-width:900px){.grid-3{grid-template-columns:1fr 1fr;}}
@media (max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr;}}

.card{
  background:#fff;border-radius:var(--radius-m);padding:32px 26px;
  box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);transition:.25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.card .icon{
  width:52px;height:52px;border-radius:14px;background:var(--ice);color:var(--teal-dark);
  display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:18px;
}
.card h3{margin-bottom:8px;}
.card a.more{font-weight:700;font-size:.85rem;color:var(--teal-dark);display:inline-flex;gap:6px;margin-top:10px;}

/* ---- Galerie réalisations ---- */
.gallery-card{border-radius:var(--radius-m);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);border:1px solid var(--gray-100);}
.gallery-card .thumb{aspect-ratio:4/3;overflow:hidden;background:var(--gray-100);}
.gallery-card .thumb img,.gallery-card .thumb video{width:100%;height:100%;object-fit:cover;}
.gallery-card .body{padding:20px 22px;}
.gallery-card .loc{font-size:.8rem;color:var(--teal-dark);font-weight:700;text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px;}
.media-strip{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin-top:18px;}
.media-strip figure{margin:0;border-radius:var(--radius-s);overflow:hidden;background:var(--gray-100);}
.media-strip img,.media-strip video{width:100%;height:220px;object-fit:cover;}
.media-strip figcaption{font-size:.8rem;color:var(--gray-600);padding:8px 4px 0;}

/* ---- Newsletters / actus ---- */
.news-item{
  display:grid;grid-template-columns:140px 1fr;gap:24px;padding:26px 0;border-bottom:1px solid var(--gray-100);
}
.news-item:last-child{border-bottom:none;}
.news-date{font-weight:700;color:var(--teal-dark);font-size:.85rem;text-transform:uppercase;letter-spacing:.03em;}
@media (max-width:640px){.news-item{grid-template-columns:1fr;gap:6px;}}

/* ---- Timeline / process ---- */
.step{display:flex;gap:18px;}
.step .num{
  flex:none;width:40px;height:40px;border-radius:50%;background:var(--teal);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;
}

/* ---- Contact ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr;}}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-weight:700;font-size:.85rem;margin-bottom:6px;color:var(--navy);}
.form-field input,.form-field textarea{
  width:100%;padding:13px 14px;border:1px solid var(--gray-100);border-radius:var(--radius-s);
  font-family:var(--font-body);font-size:.95rem;background:var(--gray-50);
}
.form-field input:focus,.form-field textarea:focus{outline:2px solid var(--teal);background:#fff;}
.contact-info-list li{display:flex;gap:14px;margin-bottom:20px;align-items:flex-start;}
.contact-info-list .ic{width:42px;height:42px;border-radius:12px;background:var(--ice);color:var(--teal-dark);display:flex;align-items:center;justify-content:center;flex:none;}
.alert{padding:14px 18px;border-radius:var(--radius-s);margin-bottom:20px;font-size:.92rem;}
.alert-success{background:#e6f6ec;color:#1a7a3f;}
.alert-error{background:#fde8e8;color:#a3242b;}

/* ---- Partenaires ---- */
.partner-card{display:flex;align-items:center;gap:16px;padding:22px;background:#fff;border-radius:var(--radius-m);border:1px solid var(--gray-100);}
.partner-card .logo{width:56px;height:56px;border-radius:12px;background:var(--ice);display:flex;align-items:center;justify-content:center;font-size:1.4rem;color:var(--teal-dark);flex:none;}

/* ---- Footer ---- */
.site-footer{background:var(--navy);color:#cfe1e6;padding:64px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:48px;}
@media (max-width:800px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;}}
.site-footer h4{color:#fff;font-family:var(--font-body);font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:16px;}
.site-footer a{color:#b7cdd4;font-size:.92rem;}
.site-footer a:hover{color:#fff;}
.site-footer li{margin-bottom:10px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.82rem;color:#8fa8b1;}
.social-icons{display:flex;gap:10px;}
.social-icons a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;}
.social-icons a:hover{background:var(--teal);}

/* ---- Breadcrumb / page header ---- */
.page-header{background:var(--ice);padding:56px 0 40px;}
.page-header .eyebrow{margin-bottom:10px;}

/* ---- Utilitaires ---- */
.text-center{text-align:center;}
.mt-0{margin-top:0;}
.badge{display:inline-block;padding:4px 12px;border-radius:100px;background:var(--ice);color:var(--teal-dark);font-size:.75rem;font-weight:700;}