/* ============================================================
   ByLM - feuille de style unique
   1. Tokens          2. Base           3. Composants
   4. Sections        5. Responsive     6. Accessibilité
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root{
  --navy-900:#0a1826;
  --navy-800:#0e2233;
  --navy-700:#16324a;
  --cream:#f7f5f0;
  --cream-2:#fbfaf7;
  --white:#ffffff;
  --ink:#12212e;
  --ink-soft:#4a5b6b;
  --ink-onDark:#c8d4de;
  --orange:#e1613c;
  --orange-dark:#c74f2c;
  --green:#7cb342;
  --green-soft:#a5d16b;
  --line:#e2ded5;
  --line-dark:#22405b;

  --wrap:1180px;
  --gap:clamp(1.25rem,3vw,2.5rem);
  --sect-y:clamp(3.5rem,8vw,6.5rem);
  --radius:10px;

  --ff-text:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --ff-num:"SF Mono",ui-monospace,"Cascadia Mono","Consolas",monospace;
}

/* ---------- 2. Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff-text);
  font-size:clamp(1rem,.97rem + .15vw,1.0625rem);
  line-height:1.65;
  color:var(--ink);
  background:var(--cream-2);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{margin:0 0 .6em;line-height:1.12;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(2.15rem,1.35rem + 3.4vw,3.9rem)}
h2{font-size:clamp(1.65rem,1.2rem + 1.9vw,2.6rem)}
h3{font-size:clamp(1.1rem,1.02rem + .35vw,1.3rem)}
p{margin:0 0 1em;text-align:justify;text-align-last:left;hyphens:auto}
p:last-child{margin-bottom:0}
a { text-decoration: none;}

/* trait court sous certains titres */
.rule::after{
  content:"";display:block;width:52px;height:3px;
  background:var(--orange);margin-top:1.1rem;border-radius:2px;
}
.rule.center::after{margin-inline:auto}

/* ---------- 3. Composants ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  padding:.95rem 1.6rem;border-radius:var(--radius);
  font-weight:600;font-size:1rem;text-decoration:none;
  border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,transform .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--orange);color:#fff}
.btn--primary:hover{background:var(--orange-dark);transform:translateY(-1px)}
.btn--ghost{border-color:rgba(255,255,255,.35);color:#fff}
.btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.07)}
.btn .arw{transition:transform .18s ease}
.btn:hover .arw{transform:translateX(3px)}

/* lien texte du hero - volontairement plus visible que dans la maquette */
.link-scroll{
  color:#fff;text-decoration:none;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.55);
  padding-bottom:2px;transition:border-color .18s ease;
}
.link-scroll:hover{border-color:#fff}
.link-more{
  display:inline-flex;align-items:center;gap:.45rem;
  color:var(--orange);font-weight:600;text-decoration:none;font-size:.95rem;
}
.link-more:hover{text-decoration:underline}
.link-quiet{color:var(--ink-onDark);text-decoration:none;font-size:.95rem}
.link-quiet:hover{color:#fff}

.eyebrow{
  display:inline-block;font-size:.72rem;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--green);margin-bottom:1rem;
}
.badge{
  display:inline-block;font-size:.66rem;font-weight:700;
  letter-spacing:.09em;text-transform:uppercase;
  padding:.28rem .6rem;border-radius:4px;color:#fff;
}
.badge--own{background:var(--green)}
.badge--client{background:var(--orange)}

.shot{
  border-radius:var(--radius);overflow:hidden;
  box-shadow:0 20px 45px -18px rgba(0,0,0,.55);
  border:1px solid rgba(255,255,255,.08);
}
/* Tant que l'image réelle n'est pas encore uploadée : emplacement propre plutôt qu'une icône cassée */
.shot img{background:var(--navy-700);display:block;width:100%;height:auto}

/* ---------- 4. Sections ---------- */

/* -- En-tête -- */
.site-head{
  background:var(--navy-800);
  position:sticky;top:0;z-index:50;
  border-bottom:1px solid var(--line-dark);
}
.head-inner{display:flex;align-items:center;gap:1.5rem;padding-block:1rem}
.logo{
  display:inline-block;
  color:#fff;
  text-decoration:none;
  line-height:1;
}

.logo img{
  display:block;
  width:120px;
  height:38px;
  object-fit:contain;
}

.logo small{
  display:block;
  font-size:.6rem;
  font-weight:500;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-onDark);
  margin-top:.35rem;
}
.nav{margin-left:auto;display:flex;align-items:center;gap:1.85rem}
.nav a{color:#e7edf2;text-decoration:none;font-size:.95rem;font-weight:500}
.nav a:hover{color:var(--green-soft)}
.nav a.is-active{color:var(--green-soft)}
.head-cta{margin-left:.6rem;padding:.7rem 1.2rem;font-size:.92rem}

/* menu mobile - sans JavaScript */
.nav-toggle{position:absolute;opacity:0;pointer-events:none}
.burger{display:none;margin-left:auto;cursor:pointer;padding:.5rem}
.burger span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;border-radius:2px}

/* -- Hero -- */
.hero{background:var(--navy-800);color:#fff;padding-block:clamp(3rem,7vw,5.5rem)}
.hero-grid{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:clamp(2rem,4vw,3.5rem);align-items:center}
.hero h1{margin-bottom:1.3rem}
.hero h1 .accent{color:var(--green)}
.hero-lead{color:var(--ink-onDark);max-width:38ch;font-size:1.05rem}
.hero-actions{display:flex;align-items:center;gap:1.6rem;flex-wrap:wrap;margin:2rem 0 1.8rem}
.hero-loc{display:flex;align-items:center;gap:.6rem;font-size:.9rem;color:var(--ink-onDark)}
.hero-loc svg{flex:0 0 auto;color:var(--orange)}
.hero-caption{
  background:var(--navy-700);border-radius:var(--radius);
  padding:1rem 1.25rem;margin-top:-.5rem;
  font-size:.92rem;color:#dbe5ee;line-height:1.55;
  border-left:3px solid var(--green);
}

/* -- Page hero simple (pages internes, sans visuel) -- */
.page-hero{background:var(--navy-800);color:#fff;padding-block:clamp(2.5rem,6vw,4rem)}
.page-hero h1 .accent{color:var(--green)}
.page-hero .lead{max-width:60ch}

/* -- Problème -- */
.prob-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.2fr) minmax(0,1fr);gap:clamp(1.5rem,3vw,3rem);align-items:start}
.prob-list{list-style:none;margin:0;padding:0}
.prob-list li{
  position:relative;padding-left:2.2rem;margin-bottom:1.15rem;
  color:var(--ink-soft);
}
.prob-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:1.35rem;height:2px;background:var(--orange);
}
.prob-concl{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.75rem;
}
strong {color:var(--orange)}
.prob-concl strong{display:block;font-size:1.22rem;line-height:1.35;margin-top:1rem;color:var(--ink)}
.prob-concl strong .accent{color:var(--orange)}
/* La carte reste blanche même dans une section sombre : le texte doit rester foncé */
.sect--dark .prob-concl p,.sect--deep .prob-concl p{color:var(--ink-soft)}

/* -- Avant / après -- */
.ba-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:2.5rem}
.ba{padding:0 clamp(1rem,2.2vw,2rem)}
.ba + .ba{border-left:1px solid var(--line-dark)}
.ba-head{display:flex;align-items:center;gap:.7rem;margin-bottom:1.6rem}
.ba-head h3{margin:0;font-size:1.05rem;color:#fff}
.ba-head svg{color:var(--orange);flex:0 0 auto}
.ba-pair{display:grid;grid-template-columns:1fr auto 1fr;gap:.9rem;align-items:start}
.ba-side{min-width:0}
.ba-label{
  display:block;font-size:.7rem;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:#7b93a8;margin-bottom:.45rem;
}
.ba-val{font-family:var(--ff-num);font-size:1.32rem;font-weight:600;line-height:1.2;color:#fff}
.ba-side--after .ba-val{color:var(--green)}
.ba-note{display:block;font-size:.87rem;color:#9fb2c2;margin-top:.4rem;line-height:1.5}
.ba-arrow{color:#456781;padding-top:1.7rem}
.ba-src{margin-top:2.8rem;text-align:center;font-size:.88rem;color:#8ba0b2;font-style:italic}

/* -- Moyens techniques (volontairement discret) -- */
.means{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.5rem,3vw,2.75rem);margin-top:2.5rem;align-items:stretch}
.mean{
  padding-left:clamp(1.25rem,2vw,2rem);border-left:1px solid var(--line);
  display:flex;gap:.9rem;align-items:flex-start;height:100%;
}
.means .mean:first-child{border-left:0;padding-left:0}
.mean-icon{flex:0 0 auto;color:var(--green);width:60px;height:60px}
.mean-body{display:flex;flex-direction:column;height:100%}
.mean h3{font-size:1.08rem;margin-top:0}
.mean .link-more{margin-top:auto;padding-top:.4rem}
.mean p{color:var(--ink-soft);font-size:.97rem;margin-bottom:1.2rem}
/* Dans une section sombre, .mean n'a pas de carte blanche en dessous : le texte doit rester clair */
.sect--dark .mean p,.sect--deep .mean p{color:var(--ink-onDark)}

/* -- Étude de cas -- */
.case-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:clamp(2rem,4vw,3.5rem);align-items:center}
.case-grid h2{max-width:16ch}
.case-result{
  border-left:3px solid var(--green);
  background:rgba(124,179,66,.1);
  padding:.9rem 1.2rem;border-radius:0 6px 6px 0;
  margin:1.6rem 0 2rem;font-size:1.02rem;color:#e8eff5;
}
.case-result b{color:var(--green-soft)}
.case-actions{display:flex;align-items:center;gap:1.5rem;flex-wrap:wrap}

/* -- Preuves / projets -- */
.proof-intro{max-width:52ch;margin-inline:auto;color:var(--ink-soft);text-align:center}
.proof-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5rem;margin-top:2.75rem;align-items:stretch}
.card{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:1.6rem;
  display:flex;flex-direction:column;gap:.85rem;
  height:100%;
}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.card h3{margin:0;font-size:1.15rem}
.card p{font-size:.95rem;color:var(--ink-soft);margin:0}
.exp{
  margin-top:2.5rem;padding-top:2rem;border-top:1px solid var(--line);
  display:flex;align-items:baseline;justify-content:center;gap:1rem;
  flex-wrap:wrap;text-align:center;
}
.exp b{font-size:2.6rem;font-weight:800;color:var(--green);letter-spacing:-.03em;line-height:1}
.exp span{color:var(--ink-soft)}
.sect--dark .exp span,.sect--deep .exp span{color:var(--ink-onDark)}

/* -- Cards d'étude de cas (page listing) -- */
.case-card img{aspect-ratio:1200/630;object-fit:cover;border-radius:8px}
.case-metric{display:flex;align-items:center;gap:.6rem;margin-top:auto;padding-top:.5rem}
.case-metric-val{font-size:1.7rem;font-weight:800;color:var(--green);letter-spacing:-.02em;line-height:1;flex:0 0 auto}
.case-metric span:last-child{font-size:.85rem;color:var(--ink-soft);line-height:1.4}
.case-card .link-more{margin-top:auto;padding-top:.3rem}

/* -- Fiche projet individuelle -- */
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1.5rem;margin:2.5rem 0}
.stat-row .stat b{display:block;font-family:var(--ff-num);font-size:1.9rem;font-weight:700;color:var(--green);letter-spacing:-.02em;line-height:1.1}
.stat-row .stat span{display:block;font-size:.85rem;color:var(--ink-onDark);margin-top:.4rem;line-height:1.4}
.stack-pills{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1.25rem}
.stack-pill{
  display:inline-block;padding:.4rem .85rem;border-radius:99px;
  font-size:.82rem;font-weight:600;background:var(--white);
  border:1px solid var(--line);color:var(--ink-soft);
}
.case-back{display:inline-flex;align-items:center;gap:.5rem;color:var(--ink-onDark);text-decoration:none;font-size:.92rem;margin-bottom:1.5rem}
.case-back:hover{color:#fff}
.case-back .arw{transform:rotate(180deg);display:inline-block}

/* -- Pages légales (texte long) -- */
.legal{max-width:44rem}
.legal h2{font-size:1.35rem;margin-top:2.5rem}
.legal h2:first-child{margin-top:0}
.legal p{color:var(--ink-soft)}
.legal .todo{
  background:rgba(225,97,60,.1);border-left:3px solid var(--orange);
  padding:.9rem 1.2rem;border-radius:0 6px 6px 0;font-size:.92rem;color:var(--ink);
}
.legal .todo b{color:var(--orange-dark)}

/* -- Formulaire de diagnostic -- */
.diag-form{
  max-width:60rem;margin:2rem auto 0;text-align:left;
  display:flex;flex-direction:column;gap:1.3rem;
}
.diag-row{display:grid;grid-template-columns:1fr 1fr;gap:1.3rem}
.diag-field--half{max-width:50%}
.diag-field label{display:block;font-size:.95rem;font-weight:600;color:var(--ink);margin-bottom:.5rem}
.diag-field input,.diag-field textarea{
  width:100%;padding:1rem 1.1rem;border-radius:8px;
  border:1px solid var(--line);font:inherit;font-size:1.05rem;color:var(--ink);
  background:var(--white);
}
.diag-field input:focus,.diag-field textarea:focus{outline:2px solid var(--green-soft);outline-offset:1px}
.diag-form .btn{align-self:flex-start;margin-top:.4rem}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.diag-field input.is-error,.diag-field textarea.is-error{border-color:var(--orange)}
.diag-error{display:block;font-size:.82rem;color:var(--orange-dark);margin-top:.35rem}
.diag-form .diag-field input,.diag-form .diag-field textarea{border-color:var(--line-dark)}
/* -- Réassurance -- */
.reassure{background:var(--navy-900);color:#fff;padding-block:clamp(2.5rem,5vw,3.5rem)}
.reassure-inner{display:flex;align-items:flex-start;gap:1.75rem}
.reassure svg{flex:0 0 auto;color:var(--green);margin-top:.2rem}
.reassure h2{font-size:clamp(1.25rem,1rem + 1.1vw,1.65rem);margin-bottom:.6rem}
.reassure p{color:var(--ink-onDark);font-size:.98rem;max-width:70ch}

/* -- Diagnostic final (fond clair : c'est la fin du tunnel) -- */
.final{background:var(--white)}
.final-inner{max-width:54rem;margin-inline:auto;text-align:center}
.final h2 .accent{color:var(--orange)}
.final p{color:var(--ink-soft);margin-bottom:2rem}
.final-price{margin-top:1.5rem;font-size:.92rem;color:var(--ink-soft)}

.wrap{width:min(100% - 2.5rem,var(--wrap));margin-inline:auto}
.sect{padding-block:var(--sect-y)}
.sect--light{background:var(--cream)}
.sect--white{background:var(--white)}
.sect--dark{background:var(--navy-800);color:var(--white)}
.sect--dark p{color:var(--ink-onDark)}
.sect--deep{background:var(--navy-900);color:var(--white)}
.sect--deep p{color:var(--ink-onDark)}
.accent{color:var(--green)}
.sect--light .accent,.sect--white .accent{color:var(--green)}
.center{text-align:center}
.lead{font-size:1.08em;color:var(--ink-soft);max-width:46ch}
.sect--dark .lead,.sect--deep .lead,.page-hero .lead,.hero .lead{color:var(--ink-onDark)}
.sect--dark .lead,.sect--deep .lead{color:var(--ink-onDark)}

/* -- Pied de page -- */
.site-foot{background:var(--navy-900);color:var(--ink-onDark);padding-block:3.25rem 1.5rem;font-size:.93rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:2.5rem}
.foot-grid h4{
  font-size:.72rem;letter-spacing:.13em;text-transform:uppercase;
  color:#fff;margin:0 0 1rem;font-weight:700;
}
.foot-list{list-style:none;margin:0;padding:0}
.foot-list li{margin-bottom:.6rem}
.foot-list a{color:var(--ink-onDark);text-decoration:none}
.foot-list a:hover{color:#fff}
.foot-contact li{display:flex;align-items:center;gap:.6rem;margin-bottom:.7rem}
.foot-contact svg{color:var(--green);flex:0 0 auto}
.foot-tag{max-width:30ch;margin-top:1rem}
.foot-bottom{
  margin-top:2.75rem;padding-top:1.25rem;border-top:1px solid var(--line-dark);
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.85rem;
}
.foot-bottom nav{display:flex;gap:1.5rem;flex-wrap:wrap}
.foot-bottom a{color:var(--ink-onDark);text-decoration:none}
.foot-bottom a:hover{color:#fff}

/* ---------- 5. Responsive ---------- */
@media (max-width:1000px){
  .hero-grid,.case-grid{grid-template-columns:1fr}
  .hero-grid .hero-visual{order:-1}
  .prob-grid{grid-template-columns:1fr 1fr}
  .prob-concl{grid-column:1 / -1}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:820px){
  .burger{display:block}
  .nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--navy-900);border-bottom:1px solid var(--line-dark);
    padding:.5rem 1.25rem 1.5rem;
    max-height:0;overflow:hidden;visibility:hidden;
    transition:max-height .25s ease,visibility .25s;
  }
  .nav a{padding:.85rem 0;border-bottom:1px solid var(--line-dark)}
  .head-cta{margin:1.25rem 0 0;justify-content:center}
  .nav-toggle:checked ~ .nav{max-height:26rem;visibility:visible}
  .head-inner{position:relative}

  .ba-grid,.means,.proof-grid{grid-template-columns:1fr}
  .ba{padding:1.75rem 0}
  .ba + .ba{border-left:0;border-top:1px solid var(--line-dark)}
  .mean{border-left:0;padding-left:0;padding-top:1.5rem;border-top:1px solid var(--line)}
  .means .mean:first-child{padding-top:0;border-top:0}
  .reassure-inner{flex-direction:column;gap:1.1rem}
}
@media (max-width:640px){
  .prob-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero-actions{gap:1.1rem}
  .btn{width:100%;justify-content:center}
  .hero-actions .link-scroll{width:100%;text-align:center}
  .ba-pair{grid-template-columns:1fr;gap:.5rem}
  .ba-arrow{display:none}
  .ba-side--after{padding-top:.75rem;border-top:1px dashed var(--line-dark)}
  .exp{flex-direction:column;gap:.3rem}
  .diag-row{grid-template-columns:1fr}
}

/* ---------- 6. Accessibilité ---------- */
a:focus-visible,.btn:focus-visible,.burger:focus-within{
  outline:3px solid var(--green-soft);outline-offset:3px;border-radius:4px;
}
.skip{
  position:absolute;left:-9999px;top:0;background:#fff;color:var(--ink);
  padding:.75rem 1.25rem;z-index:100;
}
.skip:focus{left:1rem;top:1rem}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{animation:none!important;transition:none!important}
}