:root{
  --bg:#0b0f0e; --bg-elev:#111715; --bg-row:#0f1513; --bubble-in:#152019; --bubble-out:#1a2e26;
  --line:#1f2b27; --text:#dfe8e4; --text-dim:#7d938c;
  --mint:#5ee6b0; --mint-dim:#2c5346; --amber:#f2b866; --red:#e2685f;
  --mono:'JetBrains Mono', ui-monospace, monospace; --sans:'Inter', -apple-system, sans-serif;
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent;}
html,body{height:100%; margin:0;}
body{
  background:var(--bg); color:var(--text); font-family:var(--sans); display:flex; flex-direction:column;
  padding-top:env(safe-area-inset-top); padding-bottom:env(safe-area-inset-bottom);
  overscroll-behavior:none;
}

header{display:flex; align-items:center; gap:10px; padding:12px 18px; border-bottom:1px solid var(--line); background:var(--bg-elev); flex-shrink:0;}
.dot{width:9px; height:9px; border-radius:50%; background:var(--red); flex-shrink:0;}
.dot.on{background:var(--mint); box-shadow:0 0 8px var(--mint);}
header h1{font-size:14px; margin:0; font-weight:600; cursor:pointer;}
header .sub{font-size:11.5px; color:var(--text-dim); font-family:var(--mono);}
header .safety{margin-left:auto; font-family:var(--mono); font-size:10.5px; color:var(--mint); text-align:right;}
#btnToggleSidebar{flex-shrink:0;}

.layout{flex:1; display:flex; min-height:0; position:relative; overflow:hidden;}

.sidebar{
  width:270px; flex-shrink:0; border-right:1px solid var(--line); background:var(--bg-elev);
  display:flex; flex-direction:column; min-height:0;
  transition:width .22s ease, transform .22s ease;
}
body:not(.sidebar-open) .sidebar{width:0; border-right:none; overflow:hidden;}
.sidebar-section{padding:10px 14px; border-bottom:1px solid var(--line);}
.sidebar-section h2{font-size:10.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--text-dim); margin:0 0 8px;}
.me-line{font-family:var(--mono); font-size:11px; color:var(--text-dim); margin-top:6px;}

.contact-list{flex:1; overflow-y:auto; min-height:0;}
.contact-empty{padding:16px 14px; font-size:12px; color:var(--text-dim); text-align:center;}
.contact-item{display:flex; align-items:center; gap:8px; padding:10px 14px; border-bottom:1px solid var(--line); cursor:pointer;}
.contact-item:hover{background:var(--bg-row);}
.contact-item.active{background:var(--mint-dim);}
.contact-item .cinfo{flex:1; min-width:0;}
.contact-item .cname{font-size:12.5px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.contact-item .cid{font-size:10.5px; color:var(--text-dim); font-family:var(--mono); white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
.contact-item .cbadge{background:var(--mint); color:#04140d; font-size:10px; font-weight:700; padding:1px 7px; border-radius:10px; flex-shrink:0;}

.main{flex:1; display:flex; flex-direction:column; min-width:0; min-height:0;}
.msgs{flex:1; overflow-y:auto; padding:16px 18px; display:flex; flex-direction:column; gap:8px; min-height:0;}
.msgs-placeholder{margin:auto; color:var(--text-dim); font-size:13px; text-align:center; max-width:320px;}
.row{display:flex;}
.row.out{justify-content:flex-end;}
.bubble{max-width:78%; padding:9px 12px; border-radius:12px; font-size:13px; line-height:1.4;}
.row.in .bubble{background:var(--bubble-in); border:1px solid var(--line); border-bottom-left-radius:2px;}
.row.out .bubble{background:var(--bubble-out); border:1px solid var(--mint-dim); border-bottom-right-radius:2px;}
.bubble.image-bubble{padding:6px;}
.bubble .content{white-space:pre-wrap; word-break:break-word;}
.bubble .content img{max-width:220px; max-height:220px; border-radius:8px; display:block;}
.bubble .meta{margin-top:4px; font-size:10px; color:var(--text-dim); font-family:var(--mono); display:flex; gap:5px; align-items:center; cursor:default;}
.bubble.image-bubble .meta{padding:0 4px;}
.tick{color:var(--text-dim);}
.tick.read{color:var(--mint);}
.tick-label{color:var(--text-dim); font-size:9.5px;}
.tick.read + .tick-label{color:var(--mint);}
.status-line{align-self:center; font-size:11px; color:var(--text-dim); font-family:var(--mono); padding:2px 0;}
.status-line.error{color:var(--red);}
.composer{display:flex; gap:8px; padding:12px 18px; border-top:1px solid var(--line); background:var(--bg-elev); flex-shrink:0; align-items:center;}
.composer input[type=text]{flex:1; background:var(--bg); border:1px solid var(--line); color:var(--text); padding:9px 12px; border-radius:6px; font-family:var(--sans); font-size:16px; outline:none;}
.composer input[type=text]:focus{border-color:var(--mint-dim);}
.composer input[type=text]:disabled{opacity:.4;}
.composer button{background:var(--mint-dim); border:1px solid var(--mint); color:var(--mint); padding:0 16px; border-radius:6px; cursor:pointer; font-weight:600; height:36px;}
.composer button:disabled{opacity:.4; cursor:default;}
.composer .icon-btn{background:var(--bg); border:1px solid var(--line); color:var(--text-dim); width:36px; height:36px; border-radius:6px; cursor:pointer; font-size:16px; display:flex; align-items:center; justify-content:center; padding:0; flex-shrink:0;}
.composer .icon-btn:hover{color:var(--text); border-color:var(--mint-dim);}
::-webkit-scrollbar{width:9px;} ::-webkit-scrollbar-thumb{background:var(--line); border-radius:5px;}

.onboarding{position:fixed; inset:0; background:var(--bg); display:flex; align-items:center; justify-content:center; z-index:50; padding:20px;}
.onboarding.hidden{display:none;}
.onboarding-card{width:100%; max-width:340px; background:var(--bg-elev); border:1px solid var(--line); border-radius:10px; padding:24px;}
.onboarding-card h2{margin:0 0 8px; font-size:16px;}
.onboarding-card p{margin:0 0 16px; font-size:12.5px; color:var(--text-dim); line-height:1.5;}
.onboarding-card label{display:block; font-size:10.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--text-dim); margin:0 0 5px;}
.onboarding-card input{width:100%; background:var(--bg); border:1px solid var(--line); color:var(--text); padding:9px 12px; border-radius:6px; font-family:var(--mono); font-size:16px; outline:none; margin-bottom:14px;}
.onboarding-card input:focus{border-color:var(--mint-dim);}
.onboarding-card button{width:100%; background:var(--mint-dim); border:1px solid var(--mint); color:var(--mint); padding:9px 0; border-radius:6px; cursor:pointer; font-weight:600; font-size:13px;}
.onboarding-error{margin-top:10px; font-size:11.5px; color:var(--red); min-height:14px;}

/* ---- Bouton "+" pour lier un contact, dans l'en-tête de la liste ---- */
.contacts-head{display:flex; align-items:center; justify-content:space-between; padding:10px 14px 6px;}
.contacts-head h2{font-size:10.5px; text-transform:uppercase; letter-spacing:.06em; color:var(--text-dim); margin:0;}
.fab-inline{
  width:28px; height:28px; border-radius:50%; flex-shrink:0;
  background:var(--mint-dim); border:1px solid var(--mint); color:var(--mint);
  font-size:17px; line-height:1; cursor:pointer; display:flex; align-items:center; justify-content:center;
}
.fab-inline:active{transform:scale(0.92);}

/* ---- Bottom sheet d'appairage ---- */
.sheet-backdrop{
  position:fixed; inset:0; background:rgba(0,0,0,.5); z-index:40; opacity:0; pointer-events:none;
  transition:opacity .2s ease;
}
.sheet-backdrop.open{opacity:1; pointer-events:auto;}
.bottom-sheet{
  position:fixed; left:0; right:0; bottom:0; z-index:41; background:var(--bg-elev);
  border-top:1px solid var(--line); border-radius:16px 16px 0 0;
  padding:8px 18px calc(18px + env(safe-area-inset-bottom));
  transform:translateY(100%); transition:transform .25s ease;
  max-height:80vh; overflow-y:auto;
}
.bottom-sheet.open{transform:translateY(0);}
.sheet-handle{width:36px; height:4px; background:var(--line); border-radius:3px; margin:6px auto 10px;}
.sheet-header{display:flex; align-items:center; margin-bottom:10px;}
.sheet-header h3{font-size:15px; margin:0; flex:1;}
.sheet-tabs{display:flex; gap:6px; margin-bottom:16px;}
.sheet-tab{flex:1; background:var(--bg); border:1px solid var(--line); color:var(--text-dim); padding:8px 6px; border-radius:8px; cursor:pointer; font-size:12px;}
.sheet-tab.active{border-color:var(--mint); color:var(--mint); background:var(--mint-dim);}
.sheet-panel{display:flex; flex-direction:column; align-items:center; gap:10px; text-align:center;}
#qrCanvasWrap{background:#fff; padding:10px; border-radius:10px; display:inline-flex;}
#qrCanvasWrap canvas{display:block;}
#qrCodeText{display:block; width:100%; background:var(--bg); border:1px solid var(--line); padding:8px 10px; border-radius:6px; font-family:var(--mono); font-size:10.5px; word-break:break-all; text-align:left;}
.sheet-panel button.wide{width:100%; background:var(--bg); border:1px solid var(--mint-dim); color:var(--mint); padding:9px 8px; border-radius:6px; cursor:pointer; font-size:12.5px;}
#scanVideo{width:100%; max-width:320px; border-radius:10px; background:#000; aspect-ratio:1/1; object-fit:cover;}
.scan-status{font-size:11.5px; color:var(--text-dim); font-family:var(--mono);}
.pairing-input-row{display:flex; gap:6px; width:100%;}
.pairing-input-row input{flex:1; min-width:0; background:var(--bg); border:1px solid var(--line); color:var(--text); padding:9px 10px; border-radius:6px; font-family:var(--mono); font-size:13px;}
.pairing-input-row button{background:var(--bg); border:1px solid var(--mint-dim); color:var(--mint); padding:6px 14px; border-radius:6px; cursor:pointer; font-size:13px;}

/* ---- Desktop : sheet centré façon petite fenêtre, pas un bandeau pleine largeur ---- */
@media (min-width: 641px){
  .bottom-sheet{
    left:50%; right:auto; bottom:28px; width:400px; max-width:92vw;
    border-radius:14px; transform:translate(-50%, 24px); opacity:0; pointer-events:none;
    transition:transform .2s ease, opacity .2s ease;
  }
  .bottom-sheet.open{transform:translate(-50%, 0); opacity:1; pointer-events:auto;}
}

/* ---- Mobile : sidebar en tiroir plein écran + retour ---- */
@media (max-width: 640px){
  .sidebar{
    position:absolute; inset:0; z-index:20; width:100% !important; max-width:100%;
    border-right:none; transform:translateX(-100%);
  }
  body.sidebar-open .sidebar{transform:translateX(0); overflow:visible;}
  .main{width:100%;}
}