:root{--accent:#0e7c6b;--on:#fff;--bg:#f1f4f3;--card:#fff;--fg:#14211f;--radius:14px;--font:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
--mut:color-mix(in srgb,var(--fg) 58%,transparent);--line:color-mix(in srgb,var(--fg) 13%,transparent);--soft:color-mix(in srgb,var(--fg) 6%,transparent)}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--fg);font:16px/1.5 var(--font);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
small,.mut{color:var(--mut)}
h1,h2,h3{margin:0 0 .5rem;line-height:1.2}

/* Navigation */
.nav{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:.25rem;padding:.5rem 1rem;background:var(--card);border-bottom:1px solid var(--line)}
.brand{font-weight:700;font-size:1.2rem;margin-right:auto;display:flex;gap:.5rem;align-items:center}
.brand span{color:var(--accent)}
.nav a.tab{position:relative;padding:.45rem .8rem;border-radius:999px;color:var(--mut);font-weight:600}
.nav a.tab:hover{background:var(--soft)}
.nav a.tab.on{color:var(--on);background:var(--accent)}
.badge{background:#d93a3a;color:#fff;border-radius:99px;font-size:.7rem;padding:0 .4rem;margin-left:.3rem;font-style:normal;font-weight:700}
main{max-width:640px;margin:0 auto;padding:1rem}
main.wide{max-width:1000px}

/* Composants */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:1rem;overflow:hidden}
.pad{padding:1rem}
.btn{display:inline-flex;align-items:center;gap:.4rem;border:1px solid var(--line);background:var(--card);padding:.5rem 1rem;border-radius:999px;cursor:pointer;font-weight:600}
.btn:hover{background:var(--soft)}
.btn.pri{background:var(--accent);color:var(--on);border-color:transparent}
.btn.pri:hover{filter:brightness(1.08)}
.btn.bad{color:#d93a3a}
.btn.sm{padding:.2rem .7rem;font-size:.85rem}
input[type=text],input[type=email],input[type=password],input[type=url],select,textarea{width:100%;padding:.6rem .8rem;background:var(--bg);border:1px solid var(--line);border-radius:calc(var(--radius) * .7)}
textarea{resize:vertical;min-height:90px}
label{display:block;font-weight:600;font-size:.9rem;margin:.8rem 0 .25rem}
input[type=color]{width:100%;height:2.4rem;padding:2px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}
.row{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap}
.grow{flex:1}
.err{color:#d93a3a;min-height:1.4rem;margin:.5rem 0}
#toast{position:fixed;left:50%;bottom:5rem;transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:.6rem 1.1rem;border-radius:99px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:99;max-width:90vw}
#toast.on{opacity:1}
.av{width:40px;height:40px;border-radius:50%;object-fit:cover;background:var(--accent);color:var(--on);display:inline-flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.av.xl{width:104px;height:104px;font-size:2.4rem;border:4px solid var(--card)}
.av.sm{width:30px;height:30px;font-size:.8rem}
.empty{text-align:center;color:var(--mut);padding:2.5rem 1rem}

/* Auth */
.auth{max-width:400px;margin:8vh auto;padding:0 1rem}
.auth .logo{font-size:2.6rem;color:var(--accent)}
.tabs{display:flex;gap:.5rem;margin:1rem 0}
.tabs button{flex:1}
.note{font-size:.82rem;color:var(--mut);margin-top:.8rem}

/* Publications */
.post header{display:flex;gap:.7rem;align-items:center;padding:.8rem 1rem}
.post header b{display:block;line-height:1.2}
.slides{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;background:#000}
.slides>*{flex:none;width:100%;scroll-snap-align:center;max-height:80vh;object-fit:contain}
.post .acts{display:flex;gap:1rem;padding:.6rem 1rem 0}
.post .acts button{background:none;border:0;cursor:pointer;padding:.2rem 0;font-weight:600;color:var(--mut)}
.post .acts button.liked{color:#d93a3a}
.post .cap{padding:.4rem 1rem 1rem;white-space:pre-wrap;overflow-wrap:anywhere}
.cmts{border-top:1px solid var(--line);padding:.8rem 1rem}
.cmt{display:flex;gap:.5rem;margin-bottom:.6rem;overflow-wrap:anywhere}
.cmt .x{margin-left:auto;background:none;border:0;color:var(--mut);cursor:pointer}

/* Profil */
.profile{background:var(--bg);color:var(--fg);font-family:var(--font);border-radius:var(--radius);padding-bottom:1px}
.banner{height:180px;background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 40%,var(--bg)));background-size:cover;background-position:center;border-radius:var(--radius) var(--radius) 0 0}
.phead{padding:0 1.2rem 1rem;margin-top:-52px}
.phead h1{margin-top:.6rem}
.chips{display:flex;gap:.4rem;flex-wrap:wrap;margin-top:.5rem}
.chip{background:var(--soft);border-radius:99px;padding:.1rem .7rem;font-size:.85rem}
.chip.pri{background:var(--accent);color:var(--on)}
.pgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;padding:0 .5rem}
.pgrid a{aspect-ratio:1;background:var(--soft);position:relative;overflow:hidden;border-radius:calc(var(--radius) * .4)}
.pgrid img,.pgrid video{width:100%;height:100%;object-fit:cover}
.pgrid .txt{padding:.6rem;font-size:.85rem;overflow:hidden}
.pgrid i{position:absolute;top:6px;right:8px;color:#fff;font-style:normal;text-shadow:0 0 4px #000}

/* Messagerie */
.msgs{display:grid;grid-template-columns:300px 1fr;gap:1rem;height:calc(100vh - 100px)}
.msgs aside,.msgs section{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:auto;display:flex;flex-direction:column}
.msgs aside{padding:.6rem;gap:.3rem}
.citem{display:flex;gap:.7rem;align-items:center;padding:.6rem;border-radius:calc(var(--radius) * .7)}
.citem:hover,.citem.on{background:var(--soft)}
.citem div{min-width:0;flex:1}
.citem b,.citem small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chathead{display:flex;gap:.6rem;align-items:center;padding:.7rem 1rem;border-bottom:1px solid var(--line)}
.chatlog{flex:1;overflow:auto;padding:1rem;display:flex;flex-direction:column;gap:.4rem}
.m{max-width:75%;padding:.5rem .8rem;border-radius:var(--radius);background:var(--soft);overflow-wrap:anywhere;white-space:pre-wrap}
.m.me{align-self:flex-end;background:var(--accent);color:var(--on)}
.m small{display:block;opacity:.75;font-size:.72rem}
.m img,.m video{max-width:260px;border-radius:calc(var(--radius) * .6);margin:.2rem 0}
.chatform{display:flex;gap:.5rem;padding:.7rem;border-top:1px solid var(--line);align-items:center}
.chatform input[type=text]{flex:1;border-radius:99px}
.policy{font-size:.78rem;color:var(--mut);padding:.4rem 1rem;background:var(--soft)}
.msgs.has-chat aside{display:flex}
.back{display:none}

/* Fenêtres */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:50;padding:1rem}
.modal>div{background:var(--card);width:100%;max-width:480px;max-height:90vh;overflow:auto;border-radius:var(--radius);padding:1.2rem}
.pick{display:flex;gap:.6rem;align-items:center;padding:.4rem;border-radius:8px;cursor:pointer}
.pick:hover{background:var(--soft)}

/* Admin */
table{width:100%;border-collapse:collapse;font-size:.9rem}
td,th{text-align:left;padding:.5rem;border-bottom:1px solid var(--line);vertical-align:middle}
.twocol{display:grid;grid-template-columns:1fr 1fr;gap:0 1rem}
.scroll{overflow-x:auto}

@media(max-width:700px){
  .nav{position:fixed;top:auto;bottom:0;left:0;right:0;border-top:1px solid var(--line);border-bottom:0;justify-content:space-around;padding:.3rem}
  .nav .brand{display:none}
  .nav a.tab{padding:.4rem .55rem;font-size:.9rem}
  body{padding-bottom:64px}
  .msgs{grid-template-columns:1fr;height:calc(100vh - 90px)}
  .msgs.has-chat aside{display:none}
  .msgs:not(.has-chat) section{display:none}
  .back{display:inline-flex}
  .twocol{grid-template-columns:1fr}
  #toast{bottom:5.5rem}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}