:root{
  --bg:#0a0a0a;--panel:#0f0f0f;--raise:#141414;--line:#1f1f1f;--line2:#2e2e2e;
  --fg:#ededed;--muted:#a1a1a1;--dim:#6b6b6b;--ok:#4ade80;--err:#f87171;
  --f:'Geist',ui-sans-serif,system-ui,-apple-system,sans-serif;--m:'Geist Mono',ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;overflow-x:hidden}
body{overflow-x:hidden}
body{background:var(--bg);color:var(--fg);font:400 15px/1.5 var(--f);-webkit-font-smoothing:antialiased;min-height:100vh}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:#fff;color:#000}

/* ── mise en page des pages de connexion */
.auth{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:100vh}
.side{position:relative;border-right:1px solid var(--line);padding:40px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;
}
.side:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(10,10,10,0) 30%,rgba(10,10,10,.92) 85%);pointer-events:none}
.side>*{position:relative;z-index:1}
.mark{font:600 13px var(--f);letter-spacing:.32em;text-decoration:none}
.side h2{font:600 clamp(28px,3.2vw,44px)/1.08 var(--f);letter-spacing:-.035em;max-width:14ch}
.side p{margin-top:16px;color:var(--muted);max-width:40ch}
.side small{font:400 12px var(--m);color:var(--dim)}
.main{display:flex;flex-direction:column;padding:28px 24px;min-width:0}
.main .top{display:flex;justify-content:space-between;align-items:center;min-height:24px}
.main .top .mark{display:none}
.main .top a.lk{margin-left:auto;font-size:14px;color:var(--muted);text-decoration:none}
.main .top a.lk:hover{color:var(--fg)}
.box{width:100%;max-width:400px;margin:auto;padding:40px 0}
.box h1{font:600 28px/1.15 var(--f);letter-spacing:-.03em}
.box .sub{margin-top:8px;color:var(--muted)}
@media(max-width:900px){.auth{grid-template-columns:1fr}.side{display:none}.main .top .mark{display:inline}}

/* ── formulaires */
form{margin-top:28px;display:grid;gap:16px}
.grp{display:grid;gap:16px;padding-top:4px}
.grp+.grp{border-top:1px solid var(--line);padding-top:20px}
.lab-g{font:500 11px var(--m);letter-spacing:.08em;text-transform:uppercase;color:var(--dim)}
.f{display:grid;gap:6px}
.f label{font-size:13px;color:var(--muted);display:flex;justify-content:space-between}
.f label a{color:var(--muted);text-decoration:none}.f label a:hover{color:var(--fg)}
.in{position:relative;display:flex;align-items:center;height:44px;border:1px solid #262626;border-radius:8px;background:var(--bg);transition:border-color .15s,box-shadow .15s}
.in:focus-within{border-color:#8a8a8a;box-shadow:0 0 0 3px rgba(255,255,255,.06)}
.in.bad{border-color:rgba(248,113,113,.6)}
.in input{flex:1;min-width:0;height:100%;background:none;border:0;outline:0;padding:0 12px;font-size:15px}
.in input::placeholder{color:#555}
.in .pre{padding-left:12px;color:var(--dim);font:400 14px var(--m)}
.in .pre+input{padding-left:4px}
.in .eye{height:100%;padding:0 12px;background:none;border:0;color:var(--dim);cursor:pointer;font-size:12px;font-family:var(--m)}
.in .eye:hover{color:var(--fg)}
.hint{font-size:12px;color:var(--dim)}
.hint.bad{color:var(--err)}
.force{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;margin-top:2px}
.force i{height:3px;border-radius:2px;background:#222;transition:background .2s}
.force[data-n="1"] i:nth-child(-n+1){background:var(--err)}
.force[data-n="2"] i:nth-child(-n+2){background:#d4a24c}
.force[data-n="3"] i:nth-child(-n+3){background:#a3a3a3}
.force[data-n="4"] i{background:var(--ok)}
.chk{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--muted);cursor:pointer}
.chk input{appearance:none;flex:none;width:18px;height:18px;margin-top:1px;border:1px solid #3a3a3a;border-radius:5px;background:var(--bg);display:grid;place-items:center;cursor:pointer}
.chk input:checked{background:var(--fg);border-color:var(--fg)}
.chk input:checked:after{content:"";width:9px;height:5px;border:2px solid #000;border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-1px)}
.btn{height:44px;border-radius:8px;border:1px solid var(--fg);background:var(--fg);color:#0a0a0a;font-weight:600;font-size:15px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:background .15s,opacity .15s;text-decoration:none;padding:0 18px}
.btn:hover{background:#fff}
.btn[disabled]{opacity:.5;cursor:default}
.btn.ghost{background:transparent;color:var(--fg);border-color:var(--line2)}
.btn.ghost:hover{border-color:#555;background:var(--raise)}
.btn .sp{width:14px;height:14px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:t .7s linear infinite}
@keyframes t{to{transform:rotate(360deg)}}
.msg{display:none;padding:12px 14px;border-radius:8px;font-size:14px;line-height:1.45}
.msg.on{display:block}
.msg.err{background:rgba(248,113,113,.08);border:1px solid rgba(248,113,113,.25);color:#fca5a5}
.msg.ok{background:rgba(74,222,128,.07);border:1px solid rgba(74,222,128,.25);color:#86efac}
.alt{margin-top:24px;font-size:14px;color:var(--muted);text-align:center}
.alt a{color:var(--fg);text-decoration:none;border-bottom:1px solid var(--line2)}
.alt a:hover{border-color:var(--fg)}
.invite{display:flex;align-items:center;gap:12px;margin-top:24px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--panel)}
.av{flex:none;width:36px;height:36px;border-radius:50%;background:#1d1d1d;border:1px solid var(--line2);display:grid;place-items:center;font-weight:600;font-size:14px}
.invite b{display:block;font-weight:500;font-size:14px}
.invite span{font-size:13px;color:var(--muted)}
.foot{font:400 12px var(--m);color:var(--dim);display:flex;gap:16px;justify-content:center;padding-top:8px}
.etat{text-align:center}
.etat .ic{width:48px;height:48px;margin:0 auto 20px;border-radius:50%;border:1px solid var(--line2);display:grid;place-items:center}
.etat .ic svg{width:20px;height:20px}

/* ═════ mouvement ═════ */
@view-transition{navigation:auto}
::view-transition-old(root){animation:vt-out .25s ease both}
::view-transition-new(root){animation:vt-in .45s cubic-bezier(.2,.8,.2,1) both}
@keyframes vt-out{to{opacity:0;transform:translateY(-6px)}}
@keyframes vt-in{from{opacity:0;transform:translateY(10px)}}

/* titres : chaque mot monte dans un masque */
.split .w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.08em;margin-bottom:-.08em}
.split .w>span{display:inline-block;transform:translateY(105%);animation:mot 1s cubic-bezier(.16,1,.3,1) forwards;animation-delay:calc(var(--i)*70ms + var(--d,0ms))}
@keyframes mot{to{transform:none}}
/* apparitions en cascade */
.up{opacity:0;transform:translateY(14px);animation:up .9s cubic-bezier(.16,1,.3,1) forwards;animation-delay:var(--d,0ms)}
@keyframes up{to{opacity:1;transform:none}}
.rv{opacity:0;transform:translateY(24px);transition:opacity 1s cubic-bezier(.16,1,.3,1),transform 1s cubic-bezier(.16,1,.3,1)}
.rv.vu{opacity:1;transform:none}

/* grille vivante + lumière qui suit la souris */
.grille{position:relative;isolation:isolate}
.grille:before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,40%),rgba(255,255,255,.075),transparent 70%);transition:opacity .4s}
.lignes{position:absolute;inset:0;z-index:-2;pointer-events:none;overflow:hidden}
.lignes i{position:absolute;background:var(--line)}
.lignes i.h{left:0;right:0;height:1px;transform:scaleX(0);transform-origin:left;animation:trait 1.6s cubic-bezier(.16,1,.3,1) forwards}
.lignes i.v{top:0;bottom:0;width:1px;transform:scaleY(0);transform-origin:top;animation:trait 1.6s cubic-bezier(.16,1,.3,1) forwards}
@keyframes trait{to{transform:none}}
.lignes b{position:absolute;width:5px;height:5px;margin:-2px 0 0 -2px;border-radius:50%;background:#fff;opacity:0;animation:noeud 4s ease-in-out infinite}
@keyframes noeud{0%,100%{opacity:0}40%,60%{opacity:.7}}

/* champs */
.f{animation:up .8s cubic-bezier(.16,1,.3,1) both;animation-delay:var(--d,0ms)}
.in{transition:border-color .2s,box-shadow .25s,background .2s}
.in:hover{border-color:#3a3a3a}
.in:focus-within{background:#0c0c0c}
.in.bad{animation:secoue .4s}
@keyframes secoue{20%,60%{transform:translateX(-4px)}40%,80%{transform:translateX(4px)}}
.in.ok:after{content:"";position:absolute;right:12px;width:14px;height:8px;border:2px solid var(--ok);border-top:0;border-right:0;transform:rotate(-45deg) translateY(-2px);animation:pop .3s cubic-bezier(.2,1.6,.4,1)}
.in.ok .eye+*{display:none}
@keyframes pop{from{transform:rotate(-45deg) scale(0)}}
.force i{transition:background .35s,transform .35s;transform-origin:left}
.msg.on{animation:up .5s cubic-bezier(.16,1,.3,1)}
.msg.err.on{animation:secoue .4s}

/* bouton : reflet qui traverse au survol */
.btn{position:relative;overflow:hidden;isolation:isolate;transition:background .2s,transform .15s,box-shadow .3s}
.btn:not(.ghost):before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(110deg,transparent 30%,rgba(0,0,0,.12) 50%,transparent 70%);transform:translateX(-120%);transition:transform .7s cubic-bezier(.16,1,.3,1)}
.btn:not(.ghost):hover:before{transform:translateX(120%)}
.btn:not(.ghost):hover{box-shadow:0 8px 30px -10px rgba(255,255,255,.35)}
.btn:active{transform:scale(.98)}
.btn .fl{transition:transform .25s}.btn:hover .fl{transform:translateX(3px)}

/* fin : coche animée */
.fini{display:grid;place-items:center;gap:16px;padding:30px 0;text-align:center;animation:up .6s cubic-bezier(.16,1,.3,1)}
.fini svg{width:56px;height:56px}
.fini circle{stroke-dasharray:166;stroke-dashoffset:166;animation:dess .7s cubic-bezier(.65,0,.45,1) forwards}
.fini path{stroke-dasharray:48;stroke-dashoffset:48;animation:dess .4s cubic-bezier(.65,0,.45,1) .55s forwards}
@keyframes dess{to{stroke-dashoffset:0}}

/* panneau gauche : défilement d'informations */
.fil{position:relative;height:22px;overflow:hidden;font:400 12px var(--m);color:var(--muted);margin-top:28px}
.fil span{position:absolute;inset:0;display:flex;align-items:center;gap:10px;opacity:0;transform:translateY(100%);transition:all .6s cubic-bezier(.16,1,.3,1)}
.fil span.on{opacity:1;transform:none}.fil span.out{opacity:0;transform:translateY(-100%)}
.fil span:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--fg)}
.side h2,.side p{max-width:none}
.side .titre{max-width:16ch}