/* ============================================================
   MAISON SEDNA — Design system
   Base : Pierre claire. Le sombre est un accent, jamais la règle.
   ============================================================ */

:root{
  --pierre:#F2EFEA;
  --brume:#DDE2E2;
  --bleu-lac:#789BAB;
  --bleu-nuit:#1C2A35;
  --vert-foret:#284238;
  --prune:#5B4655;
  --argent:#B7BDC1;
  --encre:#17191B;

  --font-display:'Cormorant Garamond', Georgia, serif;
  --font-text:'Jost', 'Helvetica Neue', sans-serif;

  --w-max:1280px;
  --gutter:clamp(20px, 4vw, 64px);
  --section:clamp(88px, 11vw, 168px);
  --radius:2px;
  --ease:cubic-bezier(.25,.6,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--pierre);
  color:var(--encre);
  font-family:var(--font-text);
  font-size:17px;
  line-height:1.65;
  font-weight:300;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ---------- Typographie ---------- */
h1,h2,h3,.display{font-family:var(--font-display);font-weight:500;line-height:1.08;letter-spacing:.01em}
h1{font-size:clamp(50px,7.5vw,108px)}
h2{font-size:clamp(38px,5vw,68px)}
h3{font-size:clamp(28px,3vw,42px)}
h1 em,h2 em,h3 em{font-style:italic;font-weight:400}

.eyebrow{
  font-family:var(--font-text);
  font-size:11px;
  letter-spacing:.32em;
  text-transform:uppercase;
  font-weight:400;
  color:var(--bleu-lac);
  display:block;
  margin-bottom:1.6em;
}
.eyebrow--argent{color:var(--argent)}
.eyebrow--encre{color:var(--encre);opacity:.55}

.lead{font-size:clamp(18px,1.6vw,21px);line-height:1.7;max-width:34em}
p+p{margin-top:1.1em}
.muted{opacity:.72}

/* ---------- Grille & sections ---------- */
.wrap{max-width:var(--w-max);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.section{padding-top:var(--section);padding-bottom:var(--section)}
.section--tight{padding-top:calc(var(--section)*.6);padding-bottom:calc(var(--section)*.6)}
.grid{display:grid;grid-template-columns:repeat(12,1fr);column-gap:clamp(16px,2.5vw,40px);row-gap:48px}

.filet{border:0;border-top:1px solid var(--argent);opacity:.6}

/* Fonds */
.bg-brume{background:var(--brume)}
.bg-nuit{background:var(--bleu-nuit);color:var(--pierre)}
.bg-foret{background:var(--vert-foret);color:var(--pierre)}
.bg-prune{background:var(--prune);color:var(--pierre)}
.bg-nuit .eyebrow,.bg-foret .eyebrow,.bg-prune .eyebrow{color:var(--argent)}

/* ---------- Images (placeholders à remplacer) ---------- */
.media{
  position:relative;overflow:hidden;border-radius:var(--radius);
  background:linear-gradient(160deg, var(--brume), #cfd6d6 60%, var(--brume));
}
.media::after{
  content:attr(data-image);
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  padding:24px;text-align:center;
  font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--bleu-nuit);
  opacity:.45;
}
.media img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1;transition:transform 1.2s var(--ease)}
a:hover .media img,.media:hover img{transform:scale(1.02)}
.ratio-45{aspect-ratio:4/5}
.ratio-34{aspect-ratio:3/4}
.ratio-169{aspect-ratio:16/9}
.ratio-32{aspect-ratio:3/2}
.ratio-11{aspect-ratio:1/1}

/* ---------- Boutons & liens ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:52px;padding:0 34px;
  font-family:var(--font-text);font-size:12px;letter-spacing:.24em;text-transform:uppercase;font-weight:400;
  border-radius:var(--radius);
  transition:background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
  cursor:pointer;border:1px solid transparent;
}
.btn--primary{background:var(--bleu-nuit);color:var(--pierre)}
.btn--primary:hover{background:var(--encre)}
.bg-nuit .btn--primary,.bg-foret .btn--primary,.bg-prune .btn--primary{background:var(--pierre);color:var(--bleu-nuit)}
.bg-nuit .btn--primary:hover,.bg-foret .btn--primary:hover,.bg-prune .btn--primary:hover{background:#fff}
.btn--ghost{background:transparent;color:inherit;border-color:currentColor;opacity:.85}
.btn--ghost:hover{opacity:1}

.link-line{
  position:relative;font-size:12px;letter-spacing:.24em;text-transform:uppercase;padding-bottom:6px;
}
.link-line::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:currentColor;transform-origin:left;transition:transform .45s var(--ease);
}
.link-line:hover::after{transform:scaleX(.35)}

/* ---------- Header ---------- */
.header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .4s var(--ease), box-shadow .4s var(--ease);
}
.header.is-scrolled{background:rgba(242,239,234,.94);backdrop-filter:blur(6px);box-shadow:0 1px 0 rgba(23,25,27,.06)}
.header__inner{
  max-width:var(--w-max);margin:0 auto;padding:0 var(--gutter);
  height:76px;display:flex;align-items:center;justify-content:space-between;gap:32px;
}
.wordmark{font-family:var(--font-display);font-size:19px;letter-spacing:.3em;font-weight:500;text-transform:uppercase;white-space:nowrap}
.nav{display:flex;gap:clamp(20px,2.6vw,40px)}
.nav a{font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:300;opacity:.8;transition:opacity .3s}
.nav a:hover,.nav a[aria-current="page"]{opacity:1}
.header .btn{height:42px;padding:0 22px;font-size:11px}
.header--on-dark:not(.is-scrolled){color:var(--pierre)}
.header--on-dark:not(.is-scrolled) .btn--primary{background:var(--pierre);color:var(--bleu-nuit)}

/* Burger */
.burger{display:none;background:none;border:0;cursor:pointer;font-family:var(--font-text);font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:inherit;padding:8px 0}

/* Menu mobile */
.mobilemenu{
  position:fixed;inset:0;z-index:60;background:var(--bleu-nuit);color:var(--pierre);
  display:flex;flex-direction:column;padding:32px var(--gutter) 48px;
  opacity:0;pointer-events:none;transition:opacity .4s var(--ease);
}
.mobilemenu.is-open{opacity:1;pointer-events:auto}
.mobilemenu__top{display:flex;justify-content:space-between;align-items:center}
.mobilemenu nav{margin:auto 0;display:flex;flex-direction:column;gap:14px}
.mobilemenu nav a{font-family:var(--font-display);font-size:clamp(34px,9vw,52px);line-height:1.15}
.mobilemenu__foot{display:flex;flex-direction:column;gap:18px;font-size:13px;letter-spacing:.1em}
.mobilemenu .flocon{width:22px;opacity:.8}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:92vh;display:flex;align-items:flex-end;
  color:var(--pierre);background:var(--bleu-nuit);
}
.hero .media{position:absolute;inset:0;border-radius:0}
.hero .media::before{
  content:"";position:absolute;inset:0;z-index:2;
  background:linear-gradient(to top, rgba(28,42,53,.72) 0%, rgba(28,42,53,.28) 42%, rgba(28,42,53,0) 72%);
}
.hero__content{position:relative;z-index:3;width:100%;padding-bottom:clamp(64px,8vw,120px);padding-top:180px}
.hero__content .lead{margin-top:28px}
.hero__ctas{display:flex;gap:20px;flex-wrap:wrap;margin-top:44px}
.hero--page{min-height:52vh;align-items:flex-end}
.hero--light{background:var(--pierre);color:var(--encre);min-height:auto}
.hero--light .hero__content{padding-top:200px;padding-bottom:0}
.hero--nuit{background:var(--bleu-nuit);min-height:62vh}
.hero--nuit .hero__content{padding-bottom:clamp(56px,7vw,96px)}

/* ---------- Composants éditoriaux ---------- */
.split{display:grid;grid-template-columns:repeat(12,1fr);column-gap:clamp(16px,2.5vw,40px);row-gap:48px;align-items:start}
.split > .col-l{grid-column:1 / span 5}
.split > .col-r{grid-column:7 / span 6}
.split--wide > .col-l{grid-column:1 / span 6}
.split--wide > .col-r{grid-column:8 / span 5}

.entry{display:block;padding:40px 0;border-top:1px solid var(--argent)}
.entry:last-child{border-bottom:1px solid var(--argent)}
.entry__row{display:grid;grid-template-columns:repeat(12,1fr);column-gap:clamp(16px,2.5vw,40px);align-items:baseline}
.entry__num{grid-column:1/span 1;font-family:var(--font-display);font-style:italic;font-size:20px;opacity:.5}
.entry__title{grid-column:2/span 5;font-family:var(--font-display);font-size:clamp(26px,2.6vw,38px);font-weight:500;line-height:1.15;transition:color .3s}
.entry__text{grid-column:8/span 5;font-size:15px;line-height:1.65;opacity:.78}
a.entry:hover .entry__title{color:var(--bleu-lac)}

.steps{counter-reset:step;display:grid;grid-template-columns:repeat(12,1fr);column-gap:clamp(16px,2.5vw,40px);row-gap:64px}
.step{grid-column:span 6;padding-top:28px;border-top:1px solid var(--argent);position:relative}
.step__label{font-size:11px;letter-spacing:.3em;text-transform:uppercase;margin-bottom:14px;display:flex;gap:16px;align-items:baseline}
.step__label::before{counter-increment:step;content:counter(step,decimal-leading-zero);font-family:var(--font-display);font-style:italic;font-size:22px;letter-spacing:0}
.step p{font-size:15px;max-width:26em;opacity:.85}

/* Cartes bulles (composition décalée, pas de clones) */
.bulles-feature{display:grid;grid-template-columns:repeat(12,1fr);column-gap:clamp(16px,2.5vw,40px);row-gap:96px}
.bulle-card{display:block}
.bulle-card .media{margin-bottom:24px}
.bulle-card__eyebrow{font-size:11px;letter-spacing:.3em;text-transform:uppercase;opacity:.6;margin-bottom:10px;display:block}
.bulle-card h3{font-size:clamp(26px,2.4vw,36px)}
.bulle-card p{font-size:15px;opacity:.78;margin-top:10px;max-width:26em}
.bulle-card .link-line{margin-top:18px;display:inline-block}
.bulle-card--a{grid-column:1/span 5}
.bulle-card--b{grid-column:7/span 6;margin-top:120px}
.bulle-card--c{grid-column:3/span 5;margin-top:-40px}
.statut{display:inline-block;font-size:10px;letter-spacing:.26em;text-transform:uppercase;border:1px solid var(--argent);padding:6px 12px;border-radius:var(--radius);margin-top:14px;opacity:.8}

/* ---------- Formulaires ---------- */
.form{display:grid;grid-template-columns:1fr 1fr;column-gap:28px;row-gap:34px;max-width:760px}
.field{display:flex;flex-direction:column;gap:10px}
.field--full{grid-column:1/-1}
.field label{font-size:11px;letter-spacing:.24em;text-transform:uppercase;font-weight:400;opacity:.75}
.field label .opt{text-transform:none;letter-spacing:.04em;opacity:.6;font-style:italic;font-family:var(--font-display);font-size:14px}
.field input,.field select,.field textarea{
  font-family:var(--font-text);font-size:16px;font-weight:300;color:var(--encre);
  background:transparent;border:0;border-bottom:1px solid var(--argent);
  padding:12px 2px;border-radius:0;transition:border-color .3s;
}
.field textarea{min-height:110px;resize:vertical;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--bleu-nuit)}
.field input:focus-visible,.field textarea:focus-visible,.field select:focus-visible{outline:2px solid var(--bleu-lac);outline-offset:4px}
.choices{display:flex;flex-wrap:wrap;gap:14px 28px}
.choices label{display:flex;align-items:center;gap:10px;font-size:15px;letter-spacing:.02em;text-transform:none;opacity:.9;cursor:pointer}
.choices input{accent-color:var(--bleu-nuit);width:15px;height:15px}
.consent{display:flex;gap:14px;align-items:flex-start;font-size:13px;opacity:.8;grid-column:1/-1}
.consent input{margin-top:4px;accent-color:var(--bleu-nuit)}
.form .btn{grid-column:1/-1;justify-self:start;margin-top:8px}
.form-error{display:none;font-size:13px;color:var(--prune);letter-spacing:.02em}
.field.is-invalid .form-error{display:block}
.field.is-invalid input,.field.is-invalid textarea{border-color:var(--prune)}
.hp{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}

/* ---------- Footer ---------- */
.footer{background:var(--bleu-nuit);color:var(--pierre);padding:96px 0 48px}
.footer .grid{row-gap:56px}
.footer__brand{grid-column:1/span 5}
.footer__brand .wordmark{font-size:22px}
.footer__brand .baseline{margin-top:14px;font-size:12px;letter-spacing:.26em;text-transform:uppercase;color:var(--argent)}
.footer__brand .phrase{margin-top:22px;font-family:var(--font-display);font-style:italic;font-size:20px;opacity:.85}
.footer__col{grid-column:span 3}
.footer__col h4{font-size:11px;letter-spacing:.3em;text-transform:uppercase;font-weight:400;color:var(--argent);margin-bottom:20px}
.footer__col ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer__col a{font-size:14px;opacity:.85;transition:opacity .3s}
.footer__col a:hover{opacity:1}
.footer__bottom{margin-top:80px;padding-top:28px;border-top:1px solid rgba(183,189,193,.25);display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;font-size:12px;letter-spacing:.08em;opacity:.65}
.footer .flocon{width:20px;opacity:.8}

/* ---------- Révélations ---------- */
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
  .reveal.is-in{opacity:1;transform:none}
}

/* ---------- Article / prose ---------- */
.prose{max-width:680px;font-size:17px;line-height:1.75}
.prose h3{margin:2em 0 .6em}
.prose .lead{margin-bottom:1.5em}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .split>.col-l,.split--wide>.col-l{grid-column:1/-1}
  .split>.col-r,.split--wide>.col-r{grid-column:1/-1}
  .bulle-card--a{grid-column:1/span 8}
  .bulle-card--b{grid-column:4/span 9;margin-top:0}
  .bulle-card--c{grid-column:1/span 8;margin-top:0}
  .footer__brand{grid-column:1/-1}
  .footer__col{grid-column:span 6}
}
@media (max-width:820px){
  .nav,.header .btn{display:none}
  .burger{display:block}
  .step{grid-column:1/-1}
  .entry__row{display:flex;flex-direction:column;gap:10px}
  .form{grid-template-columns:1fr}
  .hero{min-height:78vh}
  .entry{padding:32px 0}
}