/* ===== izisave — design system partagé (pages plateformes) ===== */
:root{
  --bg:#060606;--bg-soft:#0b0b0d;--card:#101012;
  --line:rgba(255,255,255,.09);--line-strong:rgba(255,255,255,.16);
  --txt:#f5f5f7;--muted:#8b8b92;--muted-2:#61616a;
  --coral:#ff5757;
  --accent:#ff5757;--accent-2:#ff8a5c;      /* surchargé par thème */
  --glow:rgba(255,87,87,.5);
  --radius:22px;--ease:cubic-bezier(.19,1,.22,1);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Helvetica Neue",Inter,Segoe UI,Roboto,sans-serif;
}
/* Thèmes par plateforme */
.t-youtube{--accent:#FF0033;--accent-2:#ff5c7a;--glow:rgba(255,0,51,.5)}
.t-tiktok{--accent:#25F4EE;--accent-2:#FE2C55;--glow:rgba(37,244,238,.4)}
.t-instagram{--accent:#E1306C;--accent-2:#F77737;--glow:rgba(225,48,108,.45)}
.t-x{--accent:#ffffff;--accent-2:#cfcfd4;--glow:rgba(255,255,255,.22)}
.t-reddit{--accent:#FF4500;--accent-2:#ff7a45;--glow:rgba(255,69,0,.45)}
.t-plus{--accent:#FF5757;--accent-2:#ff8a5c;--glow:rgba(255,87,87,.45)}
.t-facebook{--accent:#1877F2;--accent-2:#4a9bff;--glow:rgba(24,119,242,.45)}
.t-twitch{--accent:#9146FF;--accent-2:#b57bff;--glow:rgba(145,70,255,.45)}
.t-vimeo{--accent:#1AB7EA;--accent-2:#5fd0f5;--glow:rgba(26,183,234,.45)}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-font-smoothing:antialiased;scroll-behavior:smooth;text-rendering:optimizeLegibility}
section,[id]{scroll-margin-top:96px}
body{font-family:var(--font);background:var(--bg);color:var(--txt);overflow-x:hidden;line-height:1.5;letter-spacing:-.01em}
::selection{background:var(--accent);color:#0a0a0a}
a{color:inherit;text-decoration:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 28px}
canvas#gl{position:fixed;inset:0;width:100%;height:100%;z-index:0}
.grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.04;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
main{position:relative;z-index:2}

/* NAV */
header{position:fixed;top:0;left:0;right:0;z-index:50;transition:transform .5s var(--ease)}
.nav{margin:16px auto;max-width:1080px;display:flex;align-items:center;justify-content:space-between;
  padding:11px 14px 11px 20px;border-radius:100px;background:rgba(14,14,16,.6);
  backdrop-filter:blur(22px) saturate(160%);-webkit-backdrop-filter:blur(22px) saturate(160%);border:1px solid var(--line)}
.brand img{height:44px;display:block}
.nav-links{display:flex;gap:6px}
.nav-links a{font-size:14.5px;color:var(--muted);padding:8px 14px;border-radius:100px;transition:.3s}
.nav-links a:hover{color:var(--txt);background:rgba(255,255,255,.05)}
.nav-links a.active{color:var(--txt)}
@media(max-width:820px){.nav-links{display:none}}
.btn{font-family:inherit;font-size:14.5px;font-weight:550;cursor:pointer;border:none;padding:11px 20px;border-radius:100px;
  transition:transform .5s var(--ease),background .3s,box-shadow .3s,color .3s;display:inline-flex;align-items:center;gap:8px}
.btn-ghost{background:transparent;color:var(--txt);border:1px solid var(--line-strong)}
.btn-ghost:hover{background:rgba(255,255,255,.06)}
.btn-accent{background:var(--accent);color:#0a0a0a;font-weight:650}
.btn-accent:hover{filter:brightness(1.08);box-shadow:0 10px 40px -8px var(--glow)}
.btn-lg{padding:16px 30px;font-size:16px}
.mag{display:inline-block}

/* HERO */
.phero{padding:170px 0 70px;text-align:center;position:relative}
.pbadge{display:inline-flex;align-items:center;gap:10px;font-size:14px;color:var(--txt);
  border:1px solid var(--line);padding:8px 16px 8px 10px;border-radius:100px;margin-bottom:28px;background:rgba(255,255,255,.03)}
.pbadge .pi{width:26px;height:26px;border-radius:7px;display:grid;place-items:center}
.pbadge .pi svg{width:16px;height:16px}
.phero h1{font-size:clamp(40px,6.6vw,84px);line-height:1;font-weight:680;letter-spacing:-.035em;max-width:16ch;margin:0 auto}
.phero h1 .g{background:linear-gradient(180deg,#fff,#9a9aa2);-webkit-background-clip:text;background-clip:text;color:transparent}
.phero h1 em{font-style:normal;color:var(--accent)}
.phero .sub{font-size:clamp(16px,2vw,20px);color:var(--muted);max-width:52ch;margin:24px auto 0;line-height:1.55}

/* DOWNLOADER CARD */
.dl{max-width:680px;margin:40px auto 0;background:rgba(18,18,20,.72);border:1px solid var(--line-strong);
  border-radius:24px;padding:22px;backdrop-filter:blur(12px);text-align:left;
  box-shadow:0 40px 120px -40px var(--glow)}
.dl-row{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.04);border:1px solid var(--line);
  border-radius:100px;padding:7px 7px 7px 20px;transition:border-color .3s,box-shadow .3s}
.dl-row:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--glow)}
.dl-row svg.lk{opacity:.5;flex:0 0 auto}
.dl-row input{flex:1;background:none;border:none;outline:none;color:var(--txt);font-family:inherit;font-size:16px}
.dl-row input::placeholder{color:var(--muted-2)}
.dl-opts{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.opt{font-size:13.5px;color:var(--muted);border:1px solid var(--line);background:rgba(255,255,255,.02);
  padding:9px 15px;border-radius:100px;cursor:pointer;transition:.25s;user-select:none;display:inline-flex;align-items:center;gap:7px}
.opt:hover{color:var(--txt);border-color:var(--line-strong)}
.opt.sel{color:#0a0a0a;background:var(--accent);border-color:var(--accent);font-weight:600}
.opt .lock{font-size:11px;opacity:.7}
.dl-foot{display:flex;justify-content:space-between;align-items:center;margin-top:16px;flex-wrap:wrap;gap:10px}
.dl-foot .note{font-size:12.5px;color:var(--muted-2)}
.opt-label{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted-2);margin:18px 0 8px;font-weight:600}

/* STEPS */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:960px;margin:0 auto}
@media(max-width:720px){.steps{grid-template-columns:1fr}}
.step{border:1px solid var(--line);border-radius:18px;padding:26px;background:rgba(255,255,255,.015)}
.step .n{width:34px;height:34px;border-radius:9px;background:var(--accent);color:#0a0a0a;font-weight:700;display:grid;place-items:center;margin-bottom:16px}
.step h3{font-size:17px;font-weight:600}
.step p{font-size:14px;color:var(--muted);margin-top:7px;line-height:1.55}

section{position:relative;padding:90px 0}
.sec-head{max-width:640px;margin:0 auto 54px;text-align:center}
.kicker{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:14px}
h2{font-size:clamp(28px,4.2vw,46px);font-weight:660;letter-spacing:-.03em;line-height:1.05}
h2 .g{background:linear-gradient(180deg,#fff,#8f8f97);-webkit-background-clip:text;background-clip:text;color:transparent}
.sec-sub{color:var(--muted);font-size:17px;margin-top:16px}

/* other platforms strip */
.others{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.oth{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:100px;
  padding:11px 20px;color:var(--muted);transition:.3s;font-size:15px;font-weight:500}
.oth:hover{color:var(--txt);border-color:var(--line-strong);transform:translateY(-2px)}
.oth svg{width:18px;height:18px}

footer{border-top:1px solid var(--line);padding:44px 0;position:relative;z-index:2;text-align:center}
footer .fl{display:flex;gap:22px;justify-content:center;flex-wrap:wrap;margin-bottom:18px}
footer .fl a{color:var(--muted);font-size:14px;transition:.3s}
footer .fl a:hover{color:var(--txt)}
footer .cp{font-size:13px;color:var(--muted-2)}
footer .disc{max-width:640px;margin:16px auto 0;font-size:12px;color:var(--muted-2);line-height:1.6}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}