/* ============================================================
   Débouchage Baignoire — Design System « Sobre · Simple · Architectural »
   Esthétique minimaliste / éditorial suisse. Palette neutre claire.
   ============================================================ */

/* ---------- Tokens ---------- */
:root{
  --bg:#FFFFFF;
  --surface:#F5F6F9;
  --ink:#13161C;
  --muted:#586273;
  --line:#E6E9EF;
  --accent:#2F4B7C;
  --accent-ink:#FFFFFF;

  --ff-title:"Albert Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --ff-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;

  --r-sm:4px;
  --r-md:6px;
  --r-lg:8px;

  --shadow:0 1px 2px rgba(19,22,28,.04);
  --shadow-md:0 8px 30px rgba(19,22,28,.06);

  --container:1180px;
  --gutter:24px;

  --t:240ms cubic-bezier(.4,0,.2,1);

  --space-section:96px;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;
  font-family:var(--ff-body);
  font-size:16px;
  line-height:1.65;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
button{font-family:inherit}
h1,h2,h3,h4{font-family:var(--ff-title);font-weight:700;line-height:1.12;color:var(--ink);margin:0 0 .5em;letter-spacing:-.015em}
h1{font-size:clamp(2.1rem,5vw,3.4rem);font-weight:800}
h2{font-size:clamp(1.65rem,3.4vw,2.4rem)}
h3{font-size:1.2rem;font-weight:600}
p{margin:0 0 1rem}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

/* ---------- Layout ---------- */
.container{max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--space-section) 0}
.section--surface{background:var(--surface)}
.section--tight{padding:64px 0}
.section-head{max-width:680px;margin:0 0 48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  font-family:var(--ff-title);
  font-size:.78rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);margin:0 0 14px;display:flex;align-items:center;gap:10px
}
.eyebrow.center{justify-content:center}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--accent);display:inline-block}
.lead{font-size:1.075rem;color:var(--muted);max-width:62ch}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--ff-title);font-weight:600;font-size:.95rem;
  padding:13px 22px;border-radius:var(--r-md);
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
  text-decoration:none!important;line-height:1
}
.btn:active{transform:translateY(1px)}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
.btn-primary:hover{background:#26406b}
.btn-call{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn-call:hover{background:#000}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink);background:var(--surface)}
.btn-block{width:100%}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid transparent;transition:border-color var(--t),box-shadow var(--t)
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--ff-title);font-weight:800;font-size:1.06rem;color:var(--ink);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand svg{width:30px;height:30px;flex:none}
.brand small{display:block;font-family:var(--ff-body);font-weight:500;font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:1px}
.nav{display:flex;align-items:center;gap:2px}
.nav a{
  font-family:var(--ff-title);font-weight:500;font-size:.9rem;color:var(--muted);
  padding:8px 12px;border-radius:var(--r-sm);transition:color var(--t),background var(--t)
}
.nav a:hover{color:var(--ink);background:var(--surface);text-decoration:none}
.nav a.active{color:var(--ink)}
.nav a.active{position:relative}
.nav a.active::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--accent);border-radius:2px}
.header-cta{display:flex;align-items:center;gap:12px}
.burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r-sm);
  cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px
}
.burger span{display:block;width:20px;height:2px;background:var(--ink);transition:transform var(--t),opacity var(--t)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Mobile nav panel */
.mobile-nav{
  position:fixed;inset:72px 0 0;background:#fff;z-index:55;
  transform:translateX(100%);transition:transform var(--t);
  overflow-y:auto;padding:24px var(--gutter) 40px;border-top:1px solid var(--line)
}
.mobile-nav.open{transform:translateX(0)}
.mobile-nav a{
  display:block;font-family:var(--ff-title);font-weight:600;font-size:1.15rem;color:var(--ink);
  padding:15px 0;border-bottom:1px solid var(--line)
}
.mobile-nav a:hover{text-decoration:none;color:var(--accent)}
.mobile-nav a.active{color:var(--accent)}
.mobile-nav .btn{margin-top:24px}

/* ---------- Hero ---------- */
.hero{padding:72px 0 96px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{margin-bottom:18px}
.hero .lead{font-size:1.15rem;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:18px;padding-top:24px;border-top:1px solid var(--line)}
.hero-badge{display:flex;align-items:center;gap:9px;font-size:.85rem;color:var(--muted);font-weight:500}
.hero-badge svg{width:18px;height:18px;color:var(--accent);flex:none}

/* ---------- Image frames ---------- */
.img-frame{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--surface)}
.img-frame img{width:100%;height:100%;object-fit:cover;filter:grayscale(.18) contrast(1.02)}
.hero-img{aspect-ratio:16/9}
.media-split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.media-split .img-frame img{aspect-ratio:3/2}

/* ---------- Reassurance strip ---------- */
.reassure{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.reassure-item{background:#fff;padding:26px 24px;display:flex;flex-direction:column;gap:10px}
.reassure-item svg{width:26px;height:26px;color:var(--accent)}
.reassure-item strong{font-family:var(--ff-title);font-weight:600;font-size:1rem}
.reassure-item span{font-size:.85rem;color:var(--muted)}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:30px 28px;transition:border-color var(--t),box-shadow var(--t),transform var(--t)
}
.card:hover{border-color:#cfd5e0;box-shadow:var(--shadow-md)}
.card .ic{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.card .ic svg{width:22px;height:22px;color:var(--accent)}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:.94rem;margin-bottom:14px}
.card .more{font-family:var(--ff-title);font-weight:600;font-size:.88rem;display:inline-flex;align-items:center;gap:6px}
.card .more svg{width:15px;height:15px;transition:transform var(--t)}
.card:hover .more svg{transform:translateX(3px)}

/* Feature row (icon left) */
.feature{display:flex;gap:18px;align-items:flex-start}
.feature .ic{flex:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center}
.feature .ic svg{width:22px;height:22px;color:var(--accent)}
.feature h3{font-size:1.05rem;margin-bottom:5px}
.feature p{color:var(--muted);font-size:.92rem;margin:0}

/* ---------- Bullet list (fine) ---------- */
.ticks{display:grid;gap:12px}
.ticks li{display:flex;gap:11px;align-items:flex-start;font-size:.95rem;color:var(--ink)}
.ticks li svg{width:18px;height:18px;color:var(--accent);flex:none;margin-top:3px}

/* ---------- Pricing table ---------- */
.price-table{width:100%;border-collapse:collapse;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.price-table th,.price-table td{text-align:left;padding:16px 20px;border-bottom:1px solid var(--line);font-size:.95rem}
.price-table thead th{background:var(--surface);font-family:var(--ff-title);font-weight:600;font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.price-table tbody tr:last-child td{border-bottom:none}
.price-table tbody tr:hover{background:var(--surface)}
.price-table .price{font-family:var(--ff-title);font-weight:700;color:var(--accent);white-space:nowrap}
.price-note{font-size:.83rem;color:var(--muted);margin-top:14px}

/* ---------- Process steps ---------- */
.steps{counter-reset:step;display:grid;gap:0}
.step{display:grid;grid-template-columns:auto 1fr;gap:22px;padding:26px 0;border-bottom:1px solid var(--line);position:relative}
.step:last-child{border-bottom:none}
.step .num{
  counter-increment:step;font-family:var(--ff-title);font-weight:800;font-size:1.1rem;
  width:44px;height:44px;border:1px solid var(--line);border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:var(--accent)
}
.step .num::before{content:"0" counter(step)}
.step h3{margin-bottom:5px}
.step p{color:var(--muted);font-size:.93rem;margin:0}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:0;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{
  list-style:none;cursor:pointer;padding:22px 4px;display:flex;justify-content:space-between;gap:20px;align-items:center;
  font-family:var(--ff-title);font-weight:600;font-size:1.05rem;color:var(--ink)
}
.faq summary::-webkit-details-marker{display:none}
.faq summary .plus{flex:none;width:22px;height:22px;position:relative;transition:transform var(--t)}
.faq summary .plus::before,.faq summary .plus::after{content:"";position:absolute;background:var(--accent);transition:opacity var(--t)}
.faq summary .plus::before{top:10px;left:0;right:0;height:2px}
.faq summary .plus::after{left:10px;top:0;bottom:0;width:2px}
.faq details[open] summary .plus::after{opacity:0}
.faq details[open] summary .plus{transform:rotate(180deg)}
.faq .answer{padding:0 4px 24px;color:var(--muted);font-size:.95rem;max-width:80ch}

/* ---------- Badges / chips ---------- */
.chip{display:inline-flex;align-items:center;gap:7px;font-size:.78rem;font-weight:600;font-family:var(--ff-title);
  padding:6px 12px;border:1px solid var(--line);border-radius:100px;background:#fff;color:var(--muted)}
.chip svg{width:14px;height:14px;color:var(--accent)}
.chip-accent{background:var(--accent);color:#fff;border-color:var(--accent)}
.chips{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- CTA band ---------- */
.cta-band{background:var(--ink);color:#fff;border-radius:var(--r-lg);padding:56px 48px;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:#c7ccd6;max-width:54ch;margin:0 auto 28px}
.cta-band .hero-cta{justify-content:center;margin-bottom:0}
.cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.28)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.08);border-color:#fff}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:.82rem;color:var(--muted);padding:20px 0;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb [aria-current]{color:var(--ink)}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.stat{background:#fff;padding:34px 24px;text-align:center}
.stat .n{font-family:var(--ff-title);font-weight:800;font-size:clamp(2rem,4vw,2.8rem);color:var(--accent);line-height:1;letter-spacing:-.02em}
.stat .n .suffix{color:var(--ink)}
.stat .l{font-size:.85rem;color:var(--muted);margin-top:10px}

/* ---------- Reviews ---------- */
.review{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px}
.review .stars{display:flex;gap:3px;margin-bottom:14px;color:var(--accent)}
.review .stars svg{width:16px;height:16px}
.review p{font-size:.98rem;color:var(--ink);margin-bottom:16px}
.review .who{font-family:var(--ff-title);font-weight:600;font-size:.9rem}
.review .who span{display:block;font-family:var(--ff-body);font-weight:400;font-size:.82rem;color:var(--muted)}

/* ---------- Form ---------- */
.form{display:grid;gap:18px}
.field{display:grid;gap:7px}
.field label{font-family:var(--ff-title);font-weight:600;font-size:.85rem}
.field input,.field select,.field textarea{
  font-family:var(--ff-body);font-size:.95rem;color:var(--ink);
  padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-sm);background:#fff;width:100%;transition:border-color var(--t)
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
.field textarea{resize:vertical;min-height:120px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}

/* ---------- Zones grid ---------- */
.zones{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.zone{
  display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:var(--r-sm);
  padding:13px 15px;font-size:.9rem;font-weight:500;background:#fff;transition:border-color var(--t),color var(--t)
}
.zone:hover{border-color:var(--accent);color:var(--accent)}
.zone svg{width:15px;height:15px;color:var(--accent);flex:none}

/* ---------- Info panel ---------- */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:30px}
.panel h3{margin-bottom:14px}
.contact-line{display:flex;align-items:flex-start;gap:13px;padding:13px 0;border-bottom:1px solid var(--line);font-size:.92rem}
.contact-line:last-child{border-bottom:none}
.contact-line svg{width:19px;height:19px;color:var(--accent);flex:none;margin-top:2px}
.contact-line strong{display:block;font-family:var(--ff-title);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:2px}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#aab2c0;padding:64px 0 28px;font-size:.9rem}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:11px;font-family:var(--ff-title);font-weight:800;font-size:1.1rem;color:#fff;margin-bottom:16px}
.footer-brand svg{width:30px;height:30px}
.site-footer p{color:#aab2c0;font-size:.88rem;line-height:1.7}
.footer-col h4{color:#fff;font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:16px;font-weight:600}
.footer-col a{display:block;color:#aab2c0;padding:5px 0;font-size:.88rem}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-contact a,.footer-contact span{display:flex;gap:9px;align-items:flex-start;color:#aab2c0;padding:5px 0;font-size:.88rem}
.footer-contact svg{width:16px;height:16px;color:#7e8aa0;flex:none;margin-top:3px}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:24px;font-size:.82rem;color:#7e8aa0}
.footer-bottom a{color:#7e8aa0}

/* ---------- Sticky mobile call bar ---------- */
.call-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;
  background:#fff;border-top:1px solid var(--line);padding:10px 14px;
  gap:10px;box-shadow:0 -4px 20px rgba(19,22,28,.07)
}
.call-bar .btn{flex:1}

/* ---------- Scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s cubic-bezier(.16,1,.3,1)}
.reveal.is-visible{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.08s}
.reveal[data-delay="2"]{transition-delay:.16s}
.reveal[data-delay="3"]{transition-delay:.24s}

@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none!important}
}

/* ---------- Utilities ---------- */
.mt-0{margin-top:0}.mb-0{margin-bottom:0}.center{text-align:center}
.divider{height:1px;background:var(--line);border:none;margin:0}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:980px){
  :root{--space-section:72px}
  .nav,.header-cta .btn-ghost{display:none}
  .burger{display:flex}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .media-split{grid-template-columns:1fr;gap:32px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .reassure{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .zones{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:640px){
  :root{--space-section:56px;--gutter:18px}
  body{padding-bottom:70px}
  .call-bar{display:flex}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .reassure{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .zones{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .form-row{grid-template-columns:1fr}
  .cta-band{padding:40px 24px}
  .hero{padding:40px 0 64px}
  .hero-cta .btn{flex:1}
}