/* ════════════════════════════════════════════════════════════
   RIVAGE — Villa Alma
   Tout le site est posé sur un seul plan-séquence : le film est
   en position fixed, les panneaux de texte se fondent par-dessus,
   et une piste invisible (.track) donne au document sa longueur.
   ════════════════════════════════════════════════════════════ */

:root{
  --ink:      #0a0907;
  --paper:    #f7f4ef;
  --brass:    #dcc094;
  --brass-d:  #a8874f;

  --track-vh: 1250;                 /* longueur totale de la piste */
  --pad: clamp(22px, 5.5vw, 96px);

  --serif: "Cormorant Garamond", "Iowan Old Style", Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ease:  cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{ box-sizing:border-box; }

html{ -webkit-text-size-adjust:100%; background:#0a0907; }
html.is-loading, html.is-loading body{ overflow:hidden; height:100%; }

body{
  margin:0;
  font-family:var(--sans); font-size:16px; font-weight:300; line-height:1.7;
  color:#fff; background:#0a0907;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{ overflow:hidden; }

a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
::selection{ background:var(--brass-d); color:#fff; }

:focus-visible{
  outline:1px solid var(--brass);
  outline-offset:4px; border-radius:2px;
}

/* ══════════ 1. le film ══════════ */

.film{ position:fixed; inset:0; z-index:0; background:#0a0907; }
.film__canvas, .film__video{
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover; display:block;
}
.film__video{                       /* repli : recadré pour retirer le filigrane */
  opacity:0; transform:scale(1.13); transform-origin:0 0;
}
.film.mode-video  .film__video { opacity:1; }
.film.mode-video  .film__canvas{ display:none; }
.film.mode-frames .film__video { display:none; }

.scrim{ position:absolute; inset:0; pointer-events:none; will-change:opacity; }
.scrim--base{
  background:
    linear-gradient(to bottom, rgba(10,9,7,.40) 0%, rgba(10,9,7,0) 17%),
    linear-gradient(to top,    rgba(10,9,7,.44) 0%, rgba(10,9,7,0) 20%),
    radial-gradient(128% 104% at 50% 48%, rgba(9,8,6,0) 58%, rgba(9,8,6,.28) 100%);
}
.scrim--left{
  opacity:0;
  background:linear-gradient(102deg,
    rgba(9,8,6,.80) 0%, rgba(9,8,6,.60) 18%, rgba(9,8,6,.24) 38%,
    rgba(9,8,6,.05) 56%, rgba(9,8,6,0) 70%);
}
.grain{
  position:absolute; inset:-120px; pointer-events:none;
  opacity:.05; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1.1s steps(3) infinite;
}
@keyframes grain{
  0%{transform:translate3d(0,0,0)} 33%{transform:translate3d(-14px,9px,0)}
  66%{transform:translate3d(11px,-12px,0)} 100%{transform:translate3d(0,0,0)}
}

.scrim--full{
  opacity:0;
  background:
    radial-gradient(130% 105% at 50% 50%, rgba(9,8,6,.42) 0%, rgba(9,8,6,.80) 100%);
}

/* ══════════ 2. piste de défilement ══════════ */

.track{ height:calc(var(--track-vh) * 1vh); pointer-events:none; }

/* ══════════ 3. panneaux ══════════ */

.panels{ position:fixed; inset:0; z-index:3; pointer-events:none; }

.panel{
  position:absolute; inset:0;
  display:flex; flex-direction:column; justify-content:center;
  padding:calc(var(--pad) + 40px) var(--pad);
  opacity:0; pointer-events:none;
  text-shadow:0 1px 30px rgba(9,8,6,.6);
}
.panel.is-live{ pointer-events:auto; }
.panel > *{ max-width:min(560px, 62ch); }

.panel--center{ align-items:center; text-align:center; }
.panel--center > *{ margin-left:auto; margin-right:auto; }
.panel--wide > *{ max-width:min(880px, 90vw); }

/* — typographie des panneaux — */

.p-eyebrow{
  font-size:11px; letter-spacing:.3em; text-transform:uppercase;
  color:var(--brass); margin:0 0 26px;
}
.p-hero{
  font-family:var(--serif); font-weight:300; text-transform:uppercase;
  font-size:clamp(3.4rem,12vw,9.5rem); line-height:.88; letter-spacing:-.02em;
  margin:0;
}
.p-lede{
  font-family:var(--serif); font-weight:300;
  font-size:clamp(1.2rem,2.4vw,1.85rem); line-height:1.4;
  margin:30px 0 0; color:rgba(255,255,255,.9);
}
.p-num{
  display:block; font-size:11px; letter-spacing:.34em;
  color:var(--brass); margin-bottom:18px;
}
.p-title{
  font-family:var(--serif); font-weight:300;
  font-size:clamp(2.7rem,7.4vw,5.6rem); line-height:1; letter-spacing:-.02em;
  margin:0;
}
.p-title--sm{ font-size:clamp(2rem,4.4vw,3.2rem); }
.p-text{
  font-size:clamp(.95rem,1.35vw,1.06rem); line-height:1.8;
  color:rgba(255,255,255,.8); max-width:44ch; margin:24px 0 0;
}
.p-quote{
  font-family:var(--serif); font-weight:300;
  font-size:clamp(1.7rem,5vw,3.6rem); line-height:1.24; letter-spacing:-.01em;
  margin:0; max-width:22ch;
}
.p-quote em{ font-style:italic; color:var(--brass); }
.p-sign{
  margin:40px 0 0; font-size:11px; letter-spacing:.22em;
  text-transform:uppercase; color:rgba(255,255,255,.5);
}

.p-chips, .p-specs{
  list-style:none; padding:0; display:flex; flex-wrap:wrap;
  gap:10px; margin:32px 0 0;
}
.p-chips li, .p-specs li{
  font-size:10.5px; letter-spacing:.16em; text-transform:uppercase;
  border:1px solid rgba(255,255,255,.3); border-radius:2px;
  padding:8px 14px; color:rgba(255,255,255,.86);
  backdrop-filter:blur(4px);
}
.p-specs{ gap:8px; margin-top:28px; }

/* — fiche technique — */

.facts{
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:1px; background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.18);
  margin:44px 0 0;
}
.facts > div{ background:rgba(10,9,7,.52); backdrop-filter:blur(6px); padding:26px 20px; }
.facts dt{
  font-size:9.5px; letter-spacing:.2em; text-transform:uppercase;
  color:rgba(255,255,255,.5); margin-bottom:10px;
}
.facts dd{
  margin:0; font-family:var(--serif); font-size:1.55rem; font-weight:300;
  letter-spacing:-.01em;
}
.facts__price{
  display:flex; align-items:baseline; justify-content:space-between;
  gap:20px; margin:26px 0 0; padding-top:20px;
  border-top:1px solid rgba(255,255,255,.2);
  font-family:var(--serif); font-size:clamp(1.5rem,3.2vw,2.3rem); font-weight:300;
}
.facts__price span{
  font-family:var(--sans); font-size:10px; letter-spacing:.2em;
  text-transform:uppercase; color:rgba(255,255,255,.55);
}
.facts__note{
  margin:18px 0 0; font-size:.8rem; line-height:1.6;
  color:rgba(255,255,255,.45); text-align:left;
}

/* — panneau contact — */

.panel--split{
  display:grid; grid-template-columns:1fr 1fr;
  gap:clamp(40px,6vw,100px); align-items:center;
}
.panel--split > *{ max-width:none; }

.ct__meta{ list-style:none; padding:0; margin:44px 0 0; max-width:36ch; }
.ct__meta li{
  padding:16px 0; border-top:1px solid rgba(255,255,255,.16);
  font-size:.94rem; color:rgba(255,255,255,.86);
}
.ct__meta span{
  display:block; font-size:9.5px; letter-spacing:.22em; text-transform:uppercase;
  color:rgba(255,255,255,.6); margin-bottom:5px;
}
.ct__meta a:hover{ color:var(--brass); }
.ct__legal{ margin:38px 0 0; font-size:.74rem; color:rgba(255,255,255,.35); }

.form{
  display:flex; flex-direction:column; gap:20px;
  background:rgba(9,8,6,.74); backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,.16); border-radius:3px;
  padding:clamp(24px,3vw,38px);
  text-shadow:none;
}
.field{ display:flex; flex-direction:column; gap:8px; flex:1; }
.field-row{ display:flex; gap:20px; flex-wrap:wrap; }
.field label{
  font-size:9.5px; letter-spacing:.22em; text-transform:uppercase;
  color:rgba(255,255,255,.66);
}
.field input, .field textarea{
  font:inherit; font-size:.95rem; color:#fff;
  background:rgba(255,255,255,.05);
  border:0; border-bottom:1px solid rgba(255,255,255,.26);
  padding:11px 12px; border-radius:2px 2px 0 0;
  transition:border-color .35s var(--ease), background .35s var(--ease);
}
.field textarea{ resize:vertical; }
.field input::placeholder, .field textarea::placeholder{ color:rgba(255,255,255,.32); }
.field input:focus, .field textarea:focus{
  outline:none; border-bottom-color:var(--brass); background:rgba(255,255,255,.09);
}
.field.is-error input, .field.is-error textarea{ border-bottom-color:#e0836a; }
.form__status{ margin:0; min-height:1.4em; font-size:.88rem; color:var(--brass); }

.btn{
  align-self:flex-start; margin-top:6px;
  padding:15px 32px; border:1px solid rgba(255,255,255,.75); border-radius:2px;
  font-size:11px; letter-spacing:.18em; text-transform:uppercase;
  transition:background .4s var(--ease), color .4s var(--ease), border-color .4s var(--ease);
}
.btn:hover{ background:#fff; color:var(--ink); border-color:#fff; }

/* ══════════ 4. navigation ══════════ */

.nav{
  position:fixed; top:0; left:0; right:0; z-index:40;
  height:74px; display:flex; align-items:center; gap:32px;
  padding:0 var(--pad);
}
.nav::after{
  content:""; position:absolute; inset:0; z-index:-1; pointer-events:none;
  background:linear-gradient(to bottom, rgba(10,9,7,.5), transparent);
}
.nav__logo{
  font-family:var(--serif); font-size:1.3rem;
  letter-spacing:.34em; text-indent:.34em;
}
.nav__links{ display:flex; gap:28px; margin-left:auto; }
.nav__links a{
  font-size:11px; letter-spacing:.16em; text-transform:uppercase;
  position:relative; padding:6px 0; opacity:.82; transition:opacity .3s;
}
.nav__links a::after{
  content:""; position:absolute; left:0; bottom:0; height:1px; width:0;
  background:currentColor; transition:width .4s var(--ease);
}
.nav__links a:hover{ opacity:1; }
.nav__links a:hover::after{ width:100%; }

.nav__cta{
  font-size:11px; letter-spacing:.16em; text-transform:uppercase;
  border:1px solid rgba(255,255,255,.55); padding:11px 20px; border-radius:2px;
  transition:background .4s var(--ease), color .4s var(--ease), border-color .4s var(--ease);
}
.nav__cta:hover{ background:#fff; color:var(--ink); border-color:#fff; }

.nav__burger{ display:none; margin-left:auto; width:34px; height:34px; position:relative; padding:0; }
.nav__burger span{
  position:absolute; left:5px; right:5px; height:1px; background:#fff;
  transition:transform .4s var(--ease);
}
.nav__burger span:nth-child(1){ top:14px; }
.nav__burger span:nth-child(2){ top:20px; }
.nav__burger[aria-expanded="true"] span:nth-child(1){ transform:translateY(3px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2){ transform:translateY(-3px) rotate(-45deg); }

.drawer{
  position:fixed; inset:0; z-index:39;
  background:rgba(10,9,7,.94); backdrop-filter:blur(14px);
  display:flex; flex-direction:column; justify-content:center; gap:6px; padding:0 var(--pad);
  opacity:0; visibility:hidden; transition:opacity .45s var(--ease), visibility .45s;
}
.drawer.is-open{ opacity:1; visibility:visible; }
.drawer a{
  font-family:var(--serif); font-size:2.4rem; font-weight:300;
  padding:12px 0; border-bottom:1px solid rgba(255,255,255,.14);
}

/* ══════════ 5. sommaire des pièces ══════════ */

.rail{
  position:fixed; z-index:20; right:var(--pad); top:50%;
  transform:translateY(-50%);
  display:flex; flex-direction:column; gap:2px;
  opacity:0; visibility:hidden;
  transition:opacity .6s var(--ease), visibility .6s;
}
.rail.is-on{ opacity:1; visibility:visible; }
.rail button{
  display:flex; align-items:center; justify-content:flex-end; gap:12px;
  padding:9px 0; color:rgba(255,255,255,.42);
  font-size:10px; letter-spacing:.18em; text-transform:uppercase;
  transition:color .45s var(--ease);
}
.rail button b{ font-weight:400; font-variant-numeric:tabular-nums; }
.rail button span{
  max-width:0; overflow:hidden; white-space:nowrap; opacity:0;
  transition:max-width .5s var(--ease), opacity .4s var(--ease);
}
.rail button i{
  display:block; width:20px; height:1px; background:currentColor; order:-1;
  transition:width .5s var(--ease);
}
.rail:hover button span,
.rail button.is-on span{ max-width:150px; opacity:1; }
.rail button:hover{ color:rgba(255,255,255,.8); }
.rail button.is-on{ color:#fff; }
.rail button.is-on i{ width:40px; background:var(--brass); }

/* ══════════ 6. HUD ══════════ */

.hud{ position:fixed; inset:auto 0 0 0; z-index:20; pointer-events:none; }
.hud__hint{
  position:absolute; left:50%; bottom:32px; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:11px;
  font-size:10px; letter-spacing:.24em; text-transform:uppercase;
  color:rgba(255,255,255,.7); text-shadow:0 1px 14px rgba(9,8,6,.9);
  transition:opacity .5s var(--ease);
}
.hud__hint i{
  display:block; width:1px; height:44px;
  background:linear-gradient(to bottom, rgba(255,255,255,.75), transparent);
  animation:drop 2.2s var(--ease) infinite;
}
@keyframes drop{
  0%{transform:scaleY(0);transform-origin:top}   45%{transform:scaleY(1);transform-origin:top}
  55%{transform:scaleY(1);transform-origin:bottom} 100%{transform:scaleY(0);transform-origin:bottom}
}
.hud__hint.is-hidden{ opacity:0; }

.hud__room{
  position:absolute; left:var(--pad); bottom:30px;
  display:none; align-items:baseline; gap:10px;
  font-size:10px; letter-spacing:.2em; text-transform:uppercase;
  color:rgba(255,255,255,.55); text-shadow:0 1px 14px rgba(9,8,6,.9);
  opacity:0; transition:opacity .5s var(--ease);
}
.hud__room.is-on{ opacity:1; }
.hud__room b{ font-weight:400; color:var(--brass); font-variant-numeric:tabular-nums; }

.hud__bar{ position:absolute; inset:auto 0 0 0; height:2px; background:rgba(255,255,255,.15); }
.hud__bar i{ display:block; height:100%; width:0; background:var(--brass); }

/* ══════════ 7. chargement ══════════ */

.loader{
  position:fixed; inset:0; z-index:100;
  background:#0a0907; display:grid; place-items:center;
  transition:opacity .9s var(--ease), visibility .9s;
}
.loader.is-done{ opacity:0; visibility:hidden; }
.loader__word{
  font-family:var(--serif); font-size:clamp(2rem,7vw,3.4rem); font-weight:300;
  letter-spacing:.34em; text-indent:.34em; display:block;
}
.loader__inner{ text-align:center; }
.loader__bar{
  width:min(240px,52vw); height:1px; background:rgba(255,255,255,.2);
  margin:28px auto 14px; overflow:hidden;
}
.loader__bar i{ display:block; height:100%; width:0; background:#fff; transition:width .25s linear; }
.loader__pct{ font-size:10px; letter-spacing:.24em; color:rgba(255,255,255,.5); }

/* ══════════ 8. responsive ══════════ */

@media (max-width:1100px){
  .rail button span{ display:none; }
}

@media (max-width:900px){
  :root{ --track-vh:1000; }
  .nav__links, .nav__cta{ display:none; }
  .nav__burger{ display:block; }
  .rail{ display:none; }
  .hud__room{ display:flex; }
  .hud__hint{ bottom:26px; }

  .panel{ justify-content:flex-end; padding-bottom:96px; }
  .panel--center{ justify-content:center; }
  .scrim--left{
    background:linear-gradient(to top,
      rgba(9,8,6,.90) 0%, rgba(9,8,6,.66) 34%, rgba(9,8,6,.12) 72%, rgba(9,8,6,0) 100%);
  }

  .facts{ grid-template-columns:repeat(2,1fr); }
  .facts > div{ padding:18px 14px; }
  .facts dd{ font-size:1.25rem; }

  .panel--split{
    grid-template-columns:1fr; gap:24px;
    align-content:start; overflow-y:auto;
    padding-top:100px; padding-bottom:44px;
  }
  .panel--split .p-title{ font-size:clamp(1.9rem,7.6vw,2.5rem); }
  .panel--split .p-eyebrow{ margin-bottom:16px; }
  .ct__meta{ margin-top:24px; }
  .ct__meta li{ padding:11px 0; }
  .ct__legal{ display:none; }
}

@media (max-width:560px){
  .field-row{ flex-direction:column; gap:20px; }
  .p-chips li, .p-specs li{ padding:7px 11px; }
  .facts__price{ flex-direction:column; gap:6px; align-items:flex-start; }
}

/* ══════════ 9. mouvement réduit ══════════ */

@media (prefers-reduced-motion:reduce){
  :root{ --track-vh:600; }
  .hud__hint i{ animation:none; }
  .grain{ animation:none; }
}