/* ===== Nathan Berthier · Hybrid — site démo ===== */
/* Ton calé sur les frames : graphite sombre + volt en accent */

:root{
  --bg:#101316;
  --bg-2:#151a1e;
  --panel:#191f24;
  --line:#262d33;
  --fg:#eef2ee;
  --fg-dim:#9aa4a0;
  --fg-mut:#69726e;
  --volt:#d7ff2e;
  --volt-dim:#a9c92a;
  --old:#7d8a86;
  --radius:3px;
  --wrap:1120px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
html.reduce{scroll-behavior:auto}
body{
  margin:0;
  background:var(--bg);
  color:var(--fg);
  font-family:'Inter',system-ui,sans-serif;
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit}
img{max-width:100%;display:block}
h1,h2,h3{margin:0;font-family:'Archivo',sans-serif;font-stretch:125%;font-weight:800;line-height:1.02;letter-spacing:-.01em;text-transform:uppercase}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.visually-hidden,.skip{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip:focus{position:fixed;top:8px;left:8px;width:auto;height:auto;clip:auto;background:var(--volt);color:#000;padding:8px 14px;z-index:200;border-radius:var(--radius)}

.overline{
  font-family:'IBM Plex Mono',monospace;
  font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;
  color:var(--volt-dim);margin:0 0 18px;font-weight:500;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-family:'IBM Plex Mono',monospace;font-size:.82rem;font-weight:500;
  letter-spacing:.06em;text-transform:uppercase;text-decoration:none;
  padding:14px 22px;border-radius:var(--radius);border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s,color .2s,border-color .2s;
  cursor:pointer;
}
.btn-volt{background:var(--volt);color:#0c0f0c;border-color:var(--volt)}
.btn-ghost{background:transparent;color:var(--fg);border-color:var(--line)}
.btn-wa{background:transparent;color:var(--volt);border-color:var(--volt-dim);margin-top:8px}
.btn-block{width:100%}
@media (hover:hover){
  .btn-volt:hover{transform:translateY(-2px)}
  .btn-ghost:hover{border-color:var(--fg-dim)}
  .btn-wa:hover{background:var(--volt);color:#0c0f0c}
}

/* ---------- nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;
  transition:transform .35s var(--ease),background .3s,border-color .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{background:rgba(16,19,22,.86);backdrop-filter:blur(10px);border-bottom-color:var(--line)}
.nav.hide{transform:translateY(-100%)}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none}
.brand-mark{
  font-family:'Archivo',sans-serif;font-stretch:125%;font-weight:900;
  background:var(--volt);color:#0c0f0c;padding:3px 8px;border-radius:2px;font-size:.9rem;letter-spacing:-.02em;
}
.brand-word{font-family:'IBM Plex Mono',monospace;letter-spacing:.28em;font-size:.8rem;color:var(--fg)}
.nav-links{display:flex;gap:30px}
.nav-links a{
  font-family:'IBM Plex Mono',monospace;font-size:.8rem;letter-spacing:.05em;
  text-decoration:none;color:var(--fg-dim);position:relative;padding:4px 0;transition:color .2s;
}
.nav-links a.active,.nav-links a:hover{color:var(--fg)}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--volt)}
.nav-cta{padding:9px 16px}
.burger{display:none;background:none;border:0;cursor:pointer;flex-direction:column;gap:5px;padding:8px}
.burger span{width:22px;height:2px;background:var(--fg);transition:.3s}
.burger[aria-expanded="true"] span:first-child{transform:translateY(3.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:last-child{transform:translateY(-3.5px) rotate(-45deg)}

.mobile-menu{
  position:fixed;inset:0 0 0 auto;width:min(80%,320px);z-index:99;
  background:var(--bg-2);border-left:1px solid var(--line);
  display:flex;flex-direction:column;gap:6px;padding:88px 24px 24px;
}
.mobile-menu[hidden]{display:none}
.mobile-menu a{
  font-family:'IBM Plex Mono',monospace;text-decoration:none;color:var(--fg);
  padding:14px 4px;border-bottom:1px solid var(--line);letter-spacing:.05em;
}
.mobile-menu .btn{margin-top:14px;border-bottom:0}

/* ---------- hero (frame sequence) ---------- */
.hero{position:relative;height:420vh}
.hero-sticky{position:sticky;top:0;height:100vh;overflow:hidden;background:#0a0c0e}
.hero-canvas,.hero-fallback{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero-fallback{opacity:0;transition:opacity .4s}
.hero-veil{
  position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(10,12,14,.55) 0%,rgba(10,12,14,0) 16%,rgba(10,12,14,0) 52%,rgba(10,12,14,.5) 74%,rgba(10,12,14,.94) 100%);
}
.hero-inner{
  position:absolute;left:0;right:0;bottom:13vh;z-index:3;
  max-width:var(--wrap);margin:0 auto;padding:0 24px;
}
.hero-beats{position:relative;min-height:200px}
.beat{max-width:22ch}
.beat .overline{color:var(--volt)}
.hero-title{font-size:clamp(1.9rem,4.4vw,3.3rem);font-weight:900;line-height:1.06;margin-top:6px}
.beat-line{
  font-family:'Archivo',sans-serif;font-stretch:125%;font-weight:800;
  font-size:clamp(1.3rem,3vw,2rem);line-height:1.12;letter-spacing:-.01em;margin:0;
}
.beat-line .hi{color:var(--volt)}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
/* beats animés : opacité/translate pilotés par JS au scroll ; sans .anim = tout visible (fallback no-JS) */
.anim .hero-beats .beat{position:absolute;left:0;right:0;bottom:0;opacity:0;will-change:opacity,transform}

.hero-chrono{
  position:absolute;top:96px;right:24px;z-index:3;text-align:right;
  font-family:'IBM Plex Mono',monospace;
}
.chrono-label{display:block;font-size:.62rem;letter-spacing:.24em;text-transform:uppercase;color:var(--fg-mut)}
.chrono{display:block;font-size:clamp(1.3rem,3vw,2rem);color:var(--volt);font-weight:600;letter-spacing:.04em}
.scroll-hint{
  position:absolute;bottom:22px;left:50%;transform:translateX(-50%);z-index:3;
  font-family:'IBM Plex Mono',monospace;font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--fg-mut);
  display:flex;flex-direction:column;align-items:center;gap:8px;
}
.scroll-hint span{width:1px;height:34px;background:linear-gradient(var(--volt),transparent);animation:hint 1.8s var(--ease) infinite}
@keyframes hint{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}}

/* ---------- sections base ---------- */
section{position:relative}
.constat,.methode,.programme,.preuves,.tarifs,.reserver{padding:clamp(72px,12vh,140px) 0}
.methode,.preuves{background:var(--bg-2)}
.sec-head{margin-bottom:52px;max-width:24ch}
.sec-title{font-size:clamp(1.7rem,4.2vw,3rem)}
.reveal{opacity:0;transform:translateY(26px)}
.reveal.in{opacity:1;transform:none;transition:opacity .7s var(--ease),transform .7s var(--ease)}

/* ---------- constat ---------- */
.constat-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:48px;align-items:start}
.constat-big{font-family:'Archivo',sans-serif;font-stretch:125%;font-weight:800;text-transform:uppercase;font-size:clamp(1.6rem,3.6vw,2.7rem);line-height:1.06;margin:0}
.constat-big .hi{color:var(--volt)}
.constat-side p{color:var(--fg-dim);margin:0 0 16px}

/* ---------- méthode ---------- */
.method-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.method-row{
  display:grid;grid-template-columns:220px 1fr;gap:32px;
  padding:34px 0;border-bottom:1px solid var(--line);align-items:baseline;
}
.method-idx{
  font-family:'IBM Plex Mono',monospace;font-size:.82rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--volt);
}
.method-body h3{font-size:clamp(1.3rem,2.6vw,1.9rem);margin-bottom:12px}
.method-body p{margin:0;color:var(--fg-dim);max-width:52ch}

/* ---------- programme ---------- */
.prog-bar{position:relative;height:2px;background:var(--line);margin:8px 0 14px}
.prog-fill{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--volt);box-shadow:0 0 12px var(--volt-dim)}
.prog-weeks{display:flex;justify-content:space-between;font-family:'IBM Plex Mono',monospace;font-size:.7rem;color:var(--fg-mut);letter-spacing:.1em;margin-bottom:48px}
.prog-blocs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bloc{padding:28px 24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}
.bloc-tag{font-family:'IBM Plex Mono',monospace;font-size:.72rem;letter-spacing:.14em;color:var(--fg-mut)}
.bloc h3{font-size:1.35rem;margin:12px 0 10px}
.bloc p{margin:0;color:var(--fg-dim);font-size:.96rem}
.bloc-hot{border-color:var(--volt-dim);background:linear-gradient(180deg,rgba(215,255,46,.06),transparent)}
.bloc-hot h3{color:var(--volt)}

/* ---------- preuves ---------- */
.splits{width:100%;border-collapse:collapse;font-family:'IBM Plex Mono',monospace;margin-bottom:52px}
.splits th,.splits td{padding:16px 12px;text-align:left;border-bottom:1px solid var(--line)}
.splits th{font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-mut);font-weight:500}
.splits td{font-size:1.02rem}
.splits td:first-child{font-family:'Inter',sans-serif;color:var(--fg)}
.t-old{color:var(--old);text-decoration:line-through;text-decoration-thickness:1px}
.t-new{color:var(--volt);font-weight:600}
.quote{margin:0;border-left:2px solid var(--volt);padding:6px 0 6px 28px}
.quote blockquote{margin:0}
.quote p{font-size:clamp(1.15rem,2.6vw,1.5rem);line-height:1.4}
.quote figcaption{font-family:'IBM Plex Mono',monospace;font-size:.78rem;color:var(--fg-mut);margin-top:16px;letter-spacing:.04em}

/* ---------- tarifs ---------- */
.board{border-top:1px solid var(--line)}
.board-row{
  display:grid;grid-template-columns:1fr 1.4fr auto;gap:24px;align-items:center;
  padding:24px 4px;border-bottom:1px solid var(--line);
}
.board-name{font-family:'Archivo',sans-serif;font-stretch:125%;font-weight:700;text-transform:uppercase;font-size:1.1rem}
.board-note{color:var(--fg-dim);font-size:.92rem}
.board-price{font-family:'IBM Plex Mono',monospace;font-size:1.5rem;color:var(--fg);white-space:nowrap;justify-self:end}
.board-price small{font-size:.8rem;color:var(--fg-mut)}
.board-hot{background:var(--volt);margin:0 -4px;padding:28px 20px;border-bottom:0}
.board-hot .board-name,.board-hot .board-note,.board-hot .board-price{color:#0c0f0c}
.board-hot .board-price{font-weight:600}

/* ---------- réservation ---------- */
.reserve-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.reserve-intro p{color:var(--fg-dim)}
.reserve-intro .sec-title{margin:0 0 14px}
.reserve-form{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-family:'IBM Plex Mono',monospace;font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--fg-dim);margin-bottom:7px}
.field input,.field textarea{
  width:100%;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  color:var(--fg);font-family:'Inter',sans-serif;font-size:1rem;padding:12px 14px;resize:vertical;
}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--volt-dim)}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);padding:64px 0 48px;overflow:hidden}
.foot-word{
  font-family:'Archivo',sans-serif;font-stretch:125%;font-weight:900;text-transform:uppercase;text-align:left;
  font-size:clamp(3rem,14vw,10rem);line-height:.84;color:var(--panel);margin:0 0 22px;letter-spacing:-.02em;
  -webkit-text-stroke:1px var(--line);
}
.foot-info p{margin:0 0 6px;color:var(--fg-dim);font-size:.94rem}
.foot-info a{color:var(--fg);text-decoration:none}
.foot-info a:hover{color:var(--volt)}
.foot-legal{color:var(--fg-mut);font-size:.8rem;margin-top:14px}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .nav-links,.nav-cta{display:none}
  .burger{display:flex}
  .constat-grid,.prog-blocs,.reserve-grid{grid-template-columns:1fr;gap:28px}
  .method-row{grid-template-columns:1fr;gap:10px;padding:26px 0}
  .board-row{grid-template-columns:1fr auto;gap:6px 18px}
  .board-note{grid-column:1/-1;order:3}
  .board-price{grid-row:1;justify-self:end}
}
@media (max-width:600px){
  body{font-size:16px}
  .hero-inner{bottom:9vh}
  .hero-chrono{top:80px}
}

/* ---------- mobile / reduced-motion : pas de frame sequence ---------- */
.hero.static{height:auto}
.hero.static .hero-sticky{position:relative;height:100vh;min-height:600px}
.hero.static .hero-canvas{display:none}
.hero.static .hero-fallback{opacity:1}
.hero.static .scroll-hint{display:none}
/* fallback mobile / reduced-motion : tous les beats visibles, empilés */
.hero.static .hero-beats,html.reduce .hero-beats{display:flex;flex-direction:column;gap:18px;min-height:0}
.hero.static .hero-beats .beat,html.reduce .hero-beats .beat{position:static;opacity:1;transform:none;max-width:32ch}
html.reduce .reveal{opacity:1;transform:none}