/* ============================================================
   À L'EAU BALZAN — styles.css
   Palette : #003459 (bleu profond) · #00171F (bleu nuit) · #FFFFFF
   Typo : Fraunces (titres) · Poppins (texte)
   Mobile-first — 80/90 % du trafic attendu sur mobile
   ============================================================ */
:root{
  --bleu:#003459;
  --nuit:#00171F;
  --blanc:#FFFFFF;
  --tint:#F0F5F9;
  --line:rgba(0,52,89,.14);
  --txt:rgba(0,23,31,.82);
  --radius:18px;
  --shadow:0 12px 32px rgba(0,23,31,.10);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Poppins',system-ui,sans-serif;
  color:var(--nuit);background:var(--blanc);
  line-height:1.65;font-size:16px;
  -webkit-font-smoothing:antialiased;
  padding-bottom:76px; /* place pour la barre d'appel mobile */
}
@media(min-width:768px){body{padding-bottom:0}}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(1120px,92%);margin-inline:auto}
h1,h2,h3{font-family:'Fraunces',serif;font-weight:600;line-height:1.12;color:var(--nuit)}

/* ---------- Header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:50;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line)}
.site-header input{display:none}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:10px 0}
.logo img{height:44px;width:auto}
nav.main{display:none;gap:26px;font-size:.92rem;font-weight:500}
nav.main a{padding:6px 0;border-bottom:2px solid transparent;transition:.2s}
nav.main a:hover,nav.main a[aria-current]{border-color:var(--bleu);color:var(--bleu)}
.header-cta{display:flex;align-items:center;gap:10px}
.header-cta .btn.tel-desktop{display:none}
@media(min-width:1140px){.header-cta .btn.tel-desktop{display:inline-flex}}
@media(min-width:960px){nav.main{display:flex}.burger{display:none!important}}
.burger{display:flex;flex-direction:column;gap:5px;cursor:pointer;padding:10px 6px}
.burger span{width:24px;height:2px;background:var(--nuit);transition:.2s}
.mobile-nav{display:none;flex-direction:column;background:var(--blanc);
  border-bottom:1px solid var(--line);padding:6px 4% 18px}
.mobile-nav a{padding:13px 8px;border-bottom:1px solid var(--line);font-weight:500}
.mobile-nav a:last-child{border-bottom:none}
#nav-open:checked ~ .mobile-nav{display:flex}
#nav-open:checked ~ .header-in .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
#nav-open:checked ~ .header-in .burger span:nth-child(2){opacity:0}
#nav-open:checked ~ .header-in .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Boutons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--bleu);color:var(--blanc);padding:13px 26px;border-radius:999px;
  font-weight:600;font-size:.93rem;border:1.5px solid var(--bleu);
  transition:background .2s,color .2s,transform .15s;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--nuit);border-color:var(--nuit)}
.btn:active{transform:scale(.98)}
.btn-ghost{background:transparent;color:var(--bleu)}
.btn-ghost:hover{background:var(--bleu);color:var(--blanc)}
.btn-white{background:var(--blanc);color:var(--bleu);border-color:var(--blanc)}
.btn-white:hover{background:rgba(255,255,255,.88);color:var(--nuit);border-color:rgba(255,255,255,.88)}
.btn-dark{background:var(--nuit);border-color:var(--nuit)}
.btn-dark:hover{background:var(--bleu);border-color:var(--bleu)}

/* ---------- Hero (accueil) ---------- */
.hero{position:relative;overflow:hidden;padding:128px 0 clamp(48px,8vw,84px)}
.hero .goutte-bg{position:absolute;right:-4%;top:84px;width:min(44vw,360px);opacity:.05;pointer-events:none}
.eyebrow{font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;font-weight:600;color:var(--bleu);margin-bottom:16px}
.hero h1{font-size:clamp(2.35rem,8.6vw,4.3rem);margin-bottom:20px;max-width:16ch}
.lead{font-size:clamp(.98rem,2.4vw,1.14rem);color:var(--txt);max-width:58ch;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-meta{margin-top:34px;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:rgba(0,23,31,.45);font-weight:500}

/* ---------- Page hero (pages intérieures) ---------- */
.page-hero{background:var(--tint);padding:124px 0 clamp(40px,7vw,64px)}
.page-hero h1{font-size:clamp(2rem,7vw,3.3rem);margin-bottom:16px;max-width:20ch}
.crumb{font-size:.8rem;color:rgba(0,23,31,.5);margin-bottom:18px}
.crumb a:hover{color:var(--bleu)}

/* ---------- Sections ---------- */
.section{padding:clamp(54px,9vw,96px) 0}
.section.tint{background:var(--tint)}
.kicker{font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;font-weight:600;color:var(--bleu)}
.section h2{font-size:clamp(1.85rem,5.4vw,2.7rem);margin:10px 0 14px;max-width:24ch}
.intro{color:var(--txt);max-width:62ch;margin-bottom:clamp(28px,5vw,44px)}

/* ---------- Grilles & cartes ---------- */
.grid{display:grid;gap:16px}
@media(min-width:640px){.grid{gap:20px}}
.g3{grid-template-columns:1fr}
@media(min-width:840px){.g3{grid-template-columns:repeat(3,1fr)}}
.g4{grid-template-columns:1fr}
@media(min-width:600px){.g4{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1020px){.g4{grid-template-columns:repeat(4,1fr)}}
.g2{grid-template-columns:1fr}
@media(min-width:840px){.g2{grid-template-columns:repeat(2,1fr)}}
.card{background:var(--blanc);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(20px,3.5vw,28px);display:flex;flex-direction:column;gap:10px;
  transition:transform .2s,box-shadow .2s}
a.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card .num{font-family:'Fraunces',serif;font-weight:700;color:var(--bleu);font-size:.98rem}
.card h3{font-size:1.28rem}
.card p{font-size:.92rem;color:var(--txt)}
.card .goutte-ico{width:22px;height:auto}
.card .more{margin-top:auto;padding-top:8px;font-size:.85rem;font-weight:600;color:var(--bleu)}

/* ---------- Placeholder photos ---------- */
.ph{position:relative;aspect-ratio:4/3;border:1.5px dashed rgba(0,52,89,.3);
  border-radius:var(--radius);background:var(--tint);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}
.ph img{width:32px;opacity:.45}
.ph span{font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;font-weight:500;color:rgba(0,52,89,.55);text-align:center;padding:0 12px}
.ph.wide{aspect-ratio:16/9}

/* ---------- Listes ---------- */
.check{list-style:none;display:flex;flex-direction:column;gap:11px}
.check li{padding-left:30px;position:relative;font-size:.96rem;color:var(--txt)}
.check li::before{content:"✓";position:absolute;left:0;top:0;color:var(--bleu);font-weight:700}
.check li strong{color:var(--nuit)}
.notdo{border-left:3px solid var(--bleu);background:var(--tint);
  padding:18px 22px;border-radius:0 var(--radius) var(--radius) 0;
  font-size:.93rem;color:var(--txt);max-width:640px}
.notdo strong{color:var(--nuit)}

/* ---------- Étapes ---------- */
.steps{display:grid;gap:16px;counter-reset:step}
@media(min-width:840px){.steps{grid-template-columns:repeat(4,1fr)}}
.steps.s3{grid-template-columns:1fr}
@media(min-width:840px){.steps.s3{grid-template-columns:repeat(3,1fr)}}
.step{background:var(--blanc);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.step::before{counter-increment:step;content:"0" counter(step);
  font-family:'Fraunces',serif;font-weight:700;font-size:1.5rem;color:var(--bleu);display:block;margin-bottom:8px}
.step h3{font-size:1.05rem;margin-bottom:6px}
.step p{font-size:.88rem;color:var(--txt)}

/* ---------- Chips (communes) ---------- */
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{border:1px solid var(--line);background:var(--blanc);border-radius:999px;
  padding:8px 16px;font-size:.87rem;font-weight:500;color:var(--txt)}
.chip.main{background:var(--bleu);color:var(--blanc);border-color:var(--bleu)}

/* ---------- FAQ ---------- */
.faq details{border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin-bottom:10px;background:var(--blanc)}
.faq summary{font-weight:600;cursor:pointer;font-size:.97rem;list-style:none;position:relative;padding-right:28px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:2px;top:-2px;font-size:1.3rem;color:var(--bleu);transition:.2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin-top:10px;font-size:.92rem;color:var(--txt)}

/* ---------- Bande CTA ---------- */
.cta-band{background:var(--bleu);color:var(--blanc);border-radius:var(--radius);
  padding:clamp(32px,6vw,60px);position:relative;overflow:hidden;
  display:flex;flex-direction:column;gap:18px;align-items:flex-start}
.cta-band h2{color:var(--blanc);font-size:clamp(1.7rem,5vw,2.5rem);max-width:22ch}
.cta-band p{color:rgba(255,255,255,.85);max-width:54ch;font-size:.97rem}
.cta-band .goutte{position:absolute;right:18px;bottom:-34px;width:130px;opacity:.14;pointer-events:none}
.cta-band .hero-cta{position:relative;z-index:1}

/* ---------- Fondateur ---------- */
.founder{display:grid;gap:30px}
@media(min-width:900px){.founder{grid-template-columns:.85fr 1.15fr;align-items:center;gap:56px}}
.founder .ph{aspect-ratio:3/3.4}
.founder p{color:var(--txt);margin-bottom:14px;font-size:.97rem}
.founder p:last-of-type{margin-bottom:22px}

/* ---------- Contact ---------- */
.contact-cards{display:grid;gap:16px}
@media(min-width:840px){.contact-cards{grid-template-columns:repeat(3,1fr)}}
.contact-cards .card{align-items:flex-start}
.contact-cards .big{font-family:'Fraunces',serif;font-size:1.45rem;font-weight:600;color:var(--bleu);word-break:break-all}

/* ---------- Footer ---------- */
footer{background:var(--nuit);color:rgba(255,255,255,.82);padding:clamp(46px,7vw,68px) 0 26px;margin-top:0}
.f-grid{display:grid;gap:34px}
@media(min-width:840px){.f-grid{grid-template-columns:1.25fr 1fr 1fr}}
footer .f-logo{height:44px;width:auto;margin-bottom:16px}
footer h4{color:var(--blanc);font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;margin-bottom:14px;font-weight:600}
footer p{font-size:.9rem;margin-bottom:10px}
footer a:hover{color:var(--blanc);text-decoration:underline}
footer ul{list-style:none;display:flex;flex-direction:column;gap:8px;font-size:.9rem}
.f-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:38px;padding-top:20px;
  font-size:.76rem;color:rgba(255,255,255,.5);display:flex;flex-wrap:wrap;gap:6px 24px}

/* ---------- Barre d'appel mobile ---------- */
.call-sticky{position:fixed;left:12px;right:12px;bottom:12px;z-index:60;display:flex;gap:10px}
.call-sticky .btn{flex:1;box-shadow:0 10px 26px rgba(0,23,31,.28);padding:14px 10px}
@media(min-width:768px){.call-sticky{display:none}}

/* ---------- Divers ---------- */
.mt{margin-top:clamp(28px,5vw,44px)}
.small{font-size:.84rem;color:rgba(0,23,31,.55)}
::selection{background:var(--bleu);color:var(--blanc)}

/* ---------- Photos ---------- */
.photo{margin:0;aspect-ratio:4/5;border-radius:var(--radius);overflow:hidden;background:var(--tint)}
.photo img{width:100%;height:100%;object-fit:cover;display:block}
.photo.land{aspect-ratio:4/3}
.photo.portrait{aspect-ratio:3/3.4}
.photo.portrait img{object-position:50% 22%}
@media(min-width:840px){.g2 .photo{max-height:560px;justify-self:center;width:100%}}
.check a,.faq a{color:var(--bleu);text-decoration:underline}

/* ---------- Hero photo (accueil) ---------- */
.hero-photo{color:#fff;background:var(--nuit);padding:128px 0 clamp(56px,9vw,110px)}
.hero-photo .hero-bg{position:absolute;inset:0;width:100%;height:100%;max-width:none;object-fit:cover;object-position:50% 16%;filter:brightness(1.25) contrast(1.05)}
.hero-photo::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,23,31,.9) 0%,rgba(0,52,89,.8) 60%,rgba(0,52,89,.7) 100%)}
.hero-photo .container{position:relative;z-index:2}
.hero-photo .eyebrow{color:rgba(255,255,255,.82)}
.hero-photo h1{color:#fff;max-width:none;font-size:clamp(1.95rem,9.4vw,2.9rem)}
.hero-photo h1 span{white-space:nowrap}
/* mobile : « La plomberie » / « qui répond, à » / « Digne-les-Bains. » */
.hero-photo h1 span:first-child,.hero-photo h1 .h1-a{display:inline}
.hero-photo h1 span:first-child::after,.hero-photo h1 .h1-a::after{content:"\A";white-space:pre}
.hero-photo .lead{color:rgba(255,255,255,.9)}
.hero-photo .lead strong{color:#fff}
.hero-photo .btn-line{background:transparent;border-color:rgba(255,255,255,.7);color:#fff}
.hero-photo .btn-line:hover{background:#fff;color:var(--bleu);border-color:#fff}
.hero-photo .hero-meta{color:rgba(255,255,255,.7)}
@media(min-width:900px){
  .hero-photo{padding-top:170px;min-height:640px}
  .hero-photo::after{background:linear-gradient(100deg,rgba(0,23,31,.93) 0%,rgba(0,52,89,.82) 42%,rgba(0,52,89,.12) 100%)}
  /* bureau : « La plomberie qui répond, » / « à Digne-les-Bains. » */
  .hero-photo h1{font-size:clamp(3rem,5.4vw,4.4rem)}
  .hero-photo h1 span:first-child::after,.hero-photo h1 .h1-a::after{content:none}
  .hero-photo h1 .h1-a::before{content:"\A";white-space:pre}
}