/* ============ Roosvelt Motors · Jetour T2 · film ============ */
:root{
  --bg:#0a0a0e; --ink:#f3f5f8; --muted:#9aa2ae; --faint:#6b7280;
  --line:rgba(255,255,255,.10); --line-2:rgba(255,255,255,.18);
  --chrome-2:#cdd5df; --steel:120,150,190;
  --ease-out:cubic-bezier(.23,1,.32,1);
  font-synthesis:none;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"General Sans",system-ui,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}

.bg-field{position:fixed;inset:0;z-index:-1;background:
  radial-gradient(1000px 700px at 80% -10%,rgba(var(--steel),.10),transparent 60%),
  linear-gradient(180deg,#08080b,#0b0b10)}

.chrome,.t-chrome{background:linear-gradient(176deg,#fff 0%,#e7ecf2 22%,#aab3c0 52%,#f4f7fb 66%,#8b95a3 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  gap:1rem;padding:14px clamp(16px,4vw,40px);transition:background .3s var(--ease-out),backdrop-filter .3s}
.nav.solid{background:rgba(9,9,13,.66);backdrop-filter:blur(14px) saturate(1.3);-webkit-backdrop-filter:blur(14px) saturate(1.3)}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{height:26px;width:auto}
.brand-name{font-family:"Clash Display";font-weight:600;letter-spacing:.02em;font-size:1.02rem}
.nav-cta{font-size:.86rem;font-weight:600;padding:9px 16px;border:1px solid var(--line-2);border-radius:999px;
  transition:transform .16s var(--ease-out),background .2s,border-color .2s}
.nav-cta:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.3)}
.nav-cta:active{transform:scale(.97)}
.progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(255,255,255,.06)}
.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,rgba(var(--steel),.7),#fff);transition:width .1s linear}

/* FILM */
.film{height:100svh;min-height:600px}
.film-stage{position:relative;height:100%;overflow:hidden}
.seq{position:absolute;inset:0;z-index:1}
.seq-frame{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center 46%;opacity:0}
.seq-frame.seq-first{opacity:1}
.film-scrim{position:absolute;inset:0;z-index:2;pointer-events:none;
  background:linear-gradient(180deg,rgba(8,8,12,.6),rgba(8,8,12,.05) 26%,rgba(8,8,12,.05) 64%,rgba(8,8,12,.82))}
.film-fade{position:absolute;inset:0;z-index:2;background:#08080b;opacity:0;pointer-events:none}

/* écran de chargement */
.loader{position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;background:#08080b;transition:opacity .6s var(--ease-out)}
.loader.hidden{opacity:0;pointer-events:none}
.loader-mark{height:38px;width:auto;opacity:.9;animation:loaderpulse 1.6s ease-in-out infinite}
@keyframes loaderpulse{0%,100%{opacity:.35}50%{opacity:1}}
.loader-track{width:180px;height:2px;background:rgba(255,255,255,.12);border-radius:2px;overflow:hidden}
.loader-track span{display:block;height:100%;width:0;background:linear-gradient(90deg,rgba(var(--steel),.8),#fff);transition:width .2s ease}
@media (prefers-reduced-motion:reduce){.loader-mark{animation:none}}

/* OVERLAYS */
.ov{position:absolute;z-index:3;opacity:0;will-change:opacity,transform;pointer-events:none}
/* halo sombre derrière chaque bloc : lisibilité sur fond clair (désert) comme sombre (studio) */
.ov::before{content:"";position:absolute;inset:-30px -46px;z-index:-1;pointer-events:none;
  background:radial-gradient(ellipse 72% 78% at 50% 50%,rgba(8,8,12,.55),transparent 74%)}
.ov-final::before{inset:-44px -64px;background:radial-gradient(ellipse 78% 82% at 50% 50%,rgba(8,8,12,.72),transparent 78%)}
.ov .btn-glass{pointer-events:auto}
.ov-final .btn-glass{background:linear-gradient(135deg,rgba(255,255,255,.24),rgba(255,255,255,.1));border-color:rgba(255,255,255,.42)}
.ov-center{left:50%;top:50%;transform:translate(-50%,-50%);text-align:center;width:calc(100% - 40px);max-width:680px}
.ov-left{left:clamp(20px,5vw,60px);top:50%;transform:translateY(-50%);text-align:left;max-width:min(500px,52vw)}
.ov-right{right:clamp(20px,5vw,60px);top:50%;transform:translateY(-50%);text-align:right;max-width:min(440px,50vw)}

.hero-kicker{font-family:"General Sans";font-weight:600;letter-spacing:.28em;text-transform:uppercase;font-size:.72rem;color:rgba(255,255,255,.72);margin-bottom:12px}
.hero-title{display:flex;flex-direction:column;align-items:center;gap:4px;text-shadow:0 2px 30px rgba(0,0,0,.5)}
.t-word{font-family:"Clash Display";font-weight:600;letter-spacing:.32em;text-indent:.32em;color:var(--chrome-2);text-transform:uppercase;font-size:clamp(1.2rem,4vw,2rem)}
.t-model{font-family:"Clash Display";font-weight:700;line-height:.8;letter-spacing:-.03em;font-size:clamp(5rem,20vw,10rem)}
.hero-sub{margin:16px auto 0;color:rgba(232,235,241,.9);font-size:clamp(1rem,3.2vw,1.16rem);max-width:34ch;text-shadow:0 1px 16px rgba(0,0,0,.6)}

.ov-chips{display:flex;flex-direction:row;gap:clamp(18px,5vw,54px);justify-content:center}
.chip{text-align:center}
.chip b{display:block;font-family:"Clash Display";font-weight:700;line-height:1;font-variant-numeric:tabular-nums;font-size:clamp(1.8rem,5vw,3rem);
  background:linear-gradient(176deg,#fff,#c6cfdb 58%,#8b95a3);-webkit-background-clip:text;background-clip:text;color:transparent}
.chip span{display:block;margin-top:6px;font-size:.76rem;color:rgba(255,255,255,.72);letter-spacing:.02em}

.eyebrow{font-family:"General Sans";font-weight:600;font-size:.76rem;letter-spacing:.22em;text-transform:uppercase;color:var(--faint)}
.eyebrow.light{color:rgba(255,255,255,.78);text-shadow:0 1px 12px rgba(0,0,0,.6)}
.big{font-family:"Clash Display";font-weight:700;line-height:1;letter-spacing:-.01em;font-size:clamp(2.2rem,6.5vw,4.6rem);margin:12px 0 16px;text-shadow:0 2px 30px rgba(0,0,0,.55)}
.ov-p{color:rgba(255,255,255,.85);max-width:34ch;font-size:1.02rem;text-shadow:0 1px 14px rgba(0,0,0,.7)}

.ov-stack{display:flex;flex-direction:column;gap:16px}
.ov-right.ov-stack{align-items:flex-end}
.dinfo b{display:block;font-family:"Clash Display";font-weight:600;font-size:clamp(1.2rem,3vw,1.7rem);color:#fff;text-shadow:0 1px 16px rgba(0,0,0,.7)}
.dinfo span{display:block;margin-top:2px;font-size:.82rem;color:rgba(255,255,255,.72);text-shadow:0 1px 12px rgba(0,0,0,.7)}

.ov-final{display:flex;flex-direction:column;align-items:center;gap:6px}
.final-mark{height:40px;width:auto;opacity:.95;margin-bottom:14px}
.final-by{color:rgba(255,255,255,.8);letter-spacing:.06em;margin:2px 0 22px;text-shadow:0 1px 14px rgba(0,0,0,.6)}
.btn-glass{position:relative;font-weight:600;font-size:1rem;padding:14px 28px;border-radius:999px;color:#fff;
  background:linear-gradient(135deg,rgba(255,255,255,.18),rgba(255,255,255,.06));border:1px solid rgba(255,255,255,.3);
  box-shadow:inset 1.5px 1.5px 1px rgba(255,255,255,.35),0 20px 40px rgba(0,0,0,.4);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:transform .16s var(--ease-out)}
.btn-glass:active{transform:scale(.97)}

.film-hint{position:absolute;left:50%;bottom:20px;transform:translateX(-50%);z-index:4;
  display:flex;flex-direction:column;align-items:center;gap:8px;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.5)}
.film-hint span{width:1px;height:30px;background:linear-gradient(rgba(255,255,255,.5),transparent);animation:hintpulse 2s var(--ease-out) infinite}
@keyframes hintpulse{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

.foot{border-top:1px solid var(--line);padding:36px clamp(20px,5vw,40px);text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}
.foot img{height:22px;width:auto;opacity:.7}
.foot p{color:var(--faint);font-size:.8rem;max-width:52ch}

/* MOBILE : les colonnes gauche/droite passent en bas, pleine largeur */
@media(max-width:760px){
  .brand-name{display:none}
  .ov-left,.ov-right{top:auto;bottom:11%;transform:none;left:20px;right:20px;max-width:none;text-align:left}
  .ov-right.ov-stack{align-items:flex-start}
  .ov-chips{gap:16px}
  .seq-frame{object-position:center 44%}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .film-hint span{animation:none}
}
@media (prefers-reduced-transparency:reduce){
  .btn-glass{background:#1a1c22;backdrop-filter:none;-webkit-backdrop-filter:none}
  .nav.solid{background:#0b0b10;backdrop-filter:none}
}